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RDMA/nes: Resurrect error path dead code
[deliverable/linux.git] / drivers / infiniband / hw / nes / nes_verbs.c
CommitLineData
3c2d774c
GS		 1/*
2 * Copyright (c) 2006 - 2008 NetEffect, Inc. 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
48atomic_t mod_qp_timouts;
49atomic_t qps_created;
50atomic_t sw_qps_destroyed;
51
52
53/**
54 * nes_alloc_mw
55 */
56static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
57 unsigned long flags;
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, NES_CQP_REQUEST_RING_DOORBELL);
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 if (atomic_dec_and_test(&cqp_request->refcount)) {
131 if (cqp_request->dynamic) {
132 kfree(cqp_request);
133 } else {
134 spin_lock_irqsave(&nesdev->cqp.lock, flags);
135 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
136 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
137 }
138 }
139 kfree(nesmr);
140 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
141 if (!ret) {
142 return ERR_PTR(-ETIME);
143 } else {
144 return ERR_PTR(-ENOMEM);
145 }
146 } else {
147 if (atomic_dec_and_test(&cqp_request->refcount)) {
148 if (cqp_request->dynamic) {
149 kfree(cqp_request);
150 } else {
151 spin_lock_irqsave(&nesdev->cqp.lock, flags);
152 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
153 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
154 }
155 }
156 }
157
158 nesmr->ibmw.rkey = stag;
159 nesmr->mode = IWNES_MEMREG_TYPE_MW;
160 ibmw = &nesmr->ibmw;
161 nesmr->pbl_4k = 0;
162 nesmr->pbls_used = 0;
163
164 return ibmw;
165}
166
167
168/**
169 * nes_dealloc_mw
170 */
171static int nes_dealloc_mw(struct ib_mw *ibmw)
172{
173 struct nes_mr *nesmr = to_nesmw(ibmw);
174 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
175 struct nes_device *nesdev = nesvnic->nesdev;
176 struct nes_adapter *nesadapter = nesdev->nesadapter;
177 struct nes_hw_cqp_wqe *cqp_wqe;
178 struct nes_cqp_request *cqp_request;
179 int err = 0;
180 unsigned long flags;
181 int ret;
182
183 /* Deallocate the window with the adapter */
184 cqp_request = nes_get_cqp_request(nesdev);
185 if (cqp_request == NULL) {
186 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
187 return -ENOMEM;
188 }
189 cqp_request->waiting = 1;
190 cqp_wqe = &cqp_request->cqp_wqe;
191 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
192 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
193 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
194
195 atomic_set(&cqp_request->refcount, 2);
196 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
197
198 /* Wait for CQP */
199 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
200 ibmw->rkey);
201 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
202 NES_EVENT_TIMEOUT);
203 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
204 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
205 ret, cqp_request->major_code, cqp_request->minor_code);
206 if ((!ret) || (cqp_request->major_code)) {
207 if (atomic_dec_and_test(&cqp_request->refcount)) {
208 if (cqp_request->dynamic) {
209 kfree(cqp_request);
210 } else {
211 spin_lock_irqsave(&nesdev->cqp.lock, flags);
212 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
213 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
214 }
215 }
216 if (!ret) {
217 err = -ETIME;
218 } else {
219 err = -EIO;
220 }
221 } else {
222 if (atomic_dec_and_test(&cqp_request->refcount)) {
223 if (cqp_request->dynamic) {
224 kfree(cqp_request);
225 } else {
226 spin_lock_irqsave(&nesdev->cqp.lock, flags);
227 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
228 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
229 }
230 }
231 }
232
233 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
234 (ibmw->rkey & 0x0fffff00) >> 8);
235 kfree(nesmr);
236
237 return err;
238}
239
240
241/**
242 * nes_bind_mw
243 */
244static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
245 struct ib_mw_bind *ibmw_bind)
246{
247 u64 u64temp;
248 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
249 struct nes_device *nesdev = nesvnic->nesdev;
250 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
251 struct nes_qp *nesqp = to_nesqp(ibqp);
252 struct nes_hw_qp_wqe *wqe;
253 unsigned long flags = 0;
254 u32 head;
255 u32 wqe_misc = 0;
256 u32 qsize;
257
258 if (nesqp->ibqp_state > IB_QPS_RTS)
259 return -EINVAL;
260
261 spin_lock_irqsave(&nesqp->lock, flags);
262
263 head = nesqp->hwqp.sq_head;
264 qsize = nesqp->hwqp.sq_tail;
265
266 /* Check for SQ overflow */
267 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
268 spin_unlock_irqrestore(&nesqp->lock, flags);
269 return -EINVAL;
270 }
271
272 wqe = &nesqp->hwqp.sq_vbase[head];
273 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
274 nes_fill_init_qp_wqe(wqe, nesqp, head);
275 u64temp = ibmw_bind->wr_id;
276 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
277 wqe_misc = NES_IWARP_SQ_OP_BIND;
278
279 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
280
281 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
282 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
283
284 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
285 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
286 }
287 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
288 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
289 }
290
291 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
292 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
293 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
294 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
295 ibmw_bind->length);
296 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
297 u64temp = (u64)ibmw_bind->addr;
298 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
299
300 head++;
301 if (head >= qsize)
302 head = 0;
303
304 nesqp->hwqp.sq_head = head;
305 barrier();
306
307 nes_write32(nesdev->regs+NES_WQE_ALLOC,
308 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
309
310 spin_unlock_irqrestore(&nesqp->lock, flags);
311
312 return 0;
313}
314
315
316/**
317 * nes_alloc_fmr
318 */
319static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
320 int ibmr_access_flags,
321 struct ib_fmr_attr *ibfmr_attr)
322{
323 unsigned long flags;
324 struct nes_pd *nespd = to_nespd(ibpd);
325 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
326 struct nes_device *nesdev = nesvnic->nesdev;
327 struct nes_adapter *nesadapter = nesdev->nesadapter;
328 struct nes_fmr *nesfmr;
329 struct nes_cqp_request *cqp_request;
330 struct nes_hw_cqp_wqe *cqp_wqe;
331 int ret;
332 u32 stag;
333 u32 stag_index = 0;
334 u32 next_stag_index = 0;
335 u32 driver_key = 0;
336 u32 opcode = 0;
337 u8 stag_key = 0;
338 int i=0;
339 struct nes_vpbl vpbl;
340
341 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
342 stag_key = (u8)next_stag_index;
343
344 driver_key = 0;
345
346 next_stag_index >>= 8;
347 next_stag_index %= nesadapter->max_mr;
348
349 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
350 nesadapter->max_mr, &stag_index, &next_stag_index);
351 if (ret) {
352 goto failed_resource_alloc;
353 }
354
355 nesfmr = kzalloc(sizeof(*nesfmr), GFP_KERNEL);
356 if (!nesfmr) {
357 ret = -ENOMEM;
358 goto failed_fmr_alloc;
359 }
360
361 nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR;
362 if (ibfmr_attr->max_pages == 1) {
363 /* use zero length PBL */
364 nesfmr->nesmr.pbl_4k = 0;
365 nesfmr->nesmr.pbls_used = 0;
366 } else if (ibfmr_attr->max_pages <= 32) {
367 /* use PBL 256 */
368 nesfmr->nesmr.pbl_4k = 0;
369 nesfmr->nesmr.pbls_used = 1;
370 } else if (ibfmr_attr->max_pages <= 512) {
371 /* use 4K PBLs */
372 nesfmr->nesmr.pbl_4k = 1;
373 nesfmr->nesmr.pbls_used = 1;
374 } else {
375 /* use two level 4K PBLs */
376 /* add support for two level 256B PBLs */
377 nesfmr->nesmr.pbl_4k = 1;
378 nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages >> 9) +
379 ((ibfmr_attr->max_pages & 511) ? 1 : 0);
380 }
381 /* Register the region with the adapter */
382 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
383
384 /* track PBL resources */
385 if (nesfmr->nesmr.pbls_used != 0) {
386 if (nesfmr->nesmr.pbl_4k) {
387 if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
388 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
389 ret = -ENOMEM;
390 goto failed_vpbl_alloc;
391 } else {
392 nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
393 }
394 } else {
395 if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
396 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
397 ret = -ENOMEM;
398 goto failed_vpbl_alloc;
399 } else {
400 nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
401 }
402 }
403 }
404
405 /* one level pbl */
406 if (nesfmr->nesmr.pbls_used == 0) {
407 nesfmr->root_vpbl.pbl_vbase = NULL;
408 nes_debug(NES_DBG_MR, "zero level pbl \n");
409 } else if (nesfmr->nesmr.pbls_used == 1) {
410 /* can change it to kmalloc & dma_map_single */
411 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
412 &nesfmr->root_vpbl.pbl_pbase);
413 if (!nesfmr->root_vpbl.pbl_vbase) {
414 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
415 ret = -ENOMEM;
416 goto failed_vpbl_alloc;
417 }
418 nesfmr->leaf_pbl_cnt = 0;
419 nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n",
420 nesfmr->root_vpbl.pbl_vbase);
421 }
422 /* two level pbl */
423 else {
424 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
425 &nesfmr->root_vpbl.pbl_pbase);
426 if (!nesfmr->root_vpbl.pbl_vbase) {
427 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
428 ret = -ENOMEM;
429 goto failed_vpbl_alloc;
430 }
431
432 nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
433 if (!nesfmr->root_vpbl.leaf_vpbl) {
434 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
435 ret = -ENOMEM;
436 goto failed_leaf_vpbl_alloc;
437 }
438
439 nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
440 nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
441 " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
442 nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
443
444 for (i=0; i<nesfmr->leaf_pbl_cnt; i++)
445 nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL;
446
447 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
448 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
449 &vpbl.pbl_pbase);
450
451 if (!vpbl.pbl_vbase) {
452 ret = -ENOMEM;
453 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
454 goto failed_leaf_vpbl_pages_alloc;
455 }
456
457 nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
458 nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
459 nesfmr->root_vpbl.leaf_vpbl[i] = vpbl;
460
461 nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n",
462 nesfmr->root_vpbl.pbl_vbase[i].pa_low,
463 nesfmr->root_vpbl.pbl_vbase[i].pa_high,
464 &nesfmr->root_vpbl.leaf_vpbl[i]);
465 }
466 }
467 nesfmr->ib_qp = NULL;
468 nesfmr->access_rights =0;
469
470 stag = stag_index << 8;
471 stag |= driver_key;
472 stag += (u32)stag_key;
473
474 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
475 cqp_request = nes_get_cqp_request(nesdev);
476 if (cqp_request == NULL) {
477 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
478 ret = -ENOMEM;
479 goto failed_leaf_vpbl_pages_alloc;
480 }
481 cqp_request->waiting = 1;
482 cqp_wqe = &cqp_request->cqp_wqe;
483
484 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
485 stag, stag_index);
486
487 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
488
489 if (nesfmr->nesmr.pbl_4k == 1)
490 opcode |= NES_CQP_STAG_PBL_BLK_SIZE;
491
492 if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) {
493 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE |
494 NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN;
495 nesfmr->access_rights |=
496 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE |
497 NES_CQP_STAG_REM_ACC_EN;
498 }
499
500 if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) {
501 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ |
502 NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN;
503 nesfmr->access_rights |=
504 NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ |
505 NES_CQP_STAG_REM_ACC_EN;
506 }
507
508 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
509 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
510 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
511 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
512
513 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] =
514 cpu_to_le32((nesfmr->nesmr.pbls_used>1) ?
515 (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used);
516
517 atomic_set(&cqp_request->refcount, 2);
518 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
519
520 /* Wait for CQP */
521 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
522 NES_EVENT_TIMEOUT);
523 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
524 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
525 stag, ret, cqp_request->major_code, cqp_request->minor_code);
526
527 if ((!ret) || (cqp_request->major_code)) {
528 if (atomic_dec_and_test(&cqp_request->refcount)) {
529 if (cqp_request->dynamic) {
530 kfree(cqp_request);
531 } else {
532 spin_lock_irqsave(&nesdev->cqp.lock, flags);
533 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
534 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
535 }
536 }
537 ret = (!ret) ? -ETIME : -EIO;
538 goto failed_leaf_vpbl_pages_alloc;
539 } else {
540 if (atomic_dec_and_test(&cqp_request->refcount)) {
541 if (cqp_request->dynamic) {
542 kfree(cqp_request);
543 } else {
544 spin_lock_irqsave(&nesdev->cqp.lock, flags);
545 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
546 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
547 }
548 }
549 }
550
551 nesfmr->nesmr.ibfmr.lkey = stag;
552 nesfmr->nesmr.ibfmr.rkey = stag;
553 nesfmr->attr = *ibfmr_attr;
554
555 return &nesfmr->nesmr.ibfmr;
556
557 failed_leaf_vpbl_pages_alloc:
558 /* unroll all allocated pages */
559 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
560 if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) {
561 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
562 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
563 }
564 }
565 if (nesfmr->root_vpbl.leaf_vpbl)
566 kfree(nesfmr->root_vpbl.leaf_vpbl);
567
568 failed_leaf_vpbl_alloc:
569 if (nesfmr->leaf_pbl_cnt == 0) {
570 if (nesfmr->root_vpbl.pbl_vbase)
571 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
572 nesfmr->root_vpbl.pbl_pbase);
573 } else
574 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
575 nesfmr->root_vpbl.pbl_pbase);
576
577 failed_vpbl_alloc:
578 kfree(nesfmr);
579
580 failed_fmr_alloc:
581 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
582
583 failed_resource_alloc:
584 return ERR_PTR(ret);
585}
586
587
588/**
589 * nes_dealloc_fmr
590 */
591static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
592{
593 struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
594 struct nes_fmr *nesfmr = to_nesfmr(nesmr);
595 struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
596 struct nes_device *nesdev = nesvnic->nesdev;
597 struct nes_mr temp_nesmr = *nesmr;
598 int i = 0;
599
600 temp_nesmr.ibmw.device = ibfmr->device;
601 temp_nesmr.ibmw.pd = ibfmr->pd;
602 temp_nesmr.ibmw.rkey = ibfmr->rkey;
603 temp_nesmr.ibmw.uobject = NULL;
604
605 /* free the resources */
606 if (nesfmr->leaf_pbl_cnt == 0) {
607 /* single PBL case */
608 if (nesfmr->root_vpbl.pbl_vbase)
609 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
610 nesfmr->root_vpbl.pbl_pbase);
611 } else {
612 for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
613 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
614 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
615 }
616 kfree(nesfmr->root_vpbl.leaf_vpbl);
617 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
618 nesfmr->root_vpbl.pbl_pbase);
619 }
620
621 return nes_dealloc_mw(&temp_nesmr.ibmw);
622}
623
624
625/**
626 * nes_map_phys_fmr
627 */
628static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
629 int list_len, u64 iova)
630{
631 return 0;
632}
633
634
635/**
636 * nes_unmap_frm
637 */
638static int nes_unmap_fmr(struct list_head *ibfmr_list)
639{
640 return 0;
641}
642
643
644
645/**
646 * nes_query_device
647 */
648static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
649{
650 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
651 struct nes_device *nesdev = nesvnic->nesdev;
652 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
653
654 memset(props, 0, sizeof(*props));
655 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
656
657 props->fw_ver = nesdev->nesadapter->fw_ver;
658 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
659 props->vendor_id = nesdev->nesadapter->vendor_id;
660 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
661 props->hw_ver = nesdev->nesadapter->hw_rev;
662 props->max_mr_size = 0x80000000;
663 props->max_qp = nesibdev->max_qp;
664 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
665 props->max_sge = nesdev->nesadapter->max_sge;
666 props->max_cq = nesibdev->max_cq;
667 props->max_cqe = nesdev->nesadapter->max_cqe - 1;
668 props->max_mr = nesibdev->max_mr;
669 props->max_mw = nesibdev->max_mr;
670 props->max_pd = nesibdev->max_pd;
671 props->max_sge_rd = 1;
672 switch (nesdev->nesadapter->max_irrq_wr) {
673 case 0:
674 props->max_qp_rd_atom = 1;
675 break;
676 case 1:
677 props->max_qp_rd_atom = 4;
678 break;
679 case 2:
680 props->max_qp_rd_atom = 16;
681 break;
682 case 3:
683 props->max_qp_rd_atom = 32;
684 break;
685 default:
686 props->max_qp_rd_atom = 0;
687 }
688 props->max_qp_init_rd_atom = props->max_qp_wr;
689 props->atomic_cap = IB_ATOMIC_NONE;
690 props->max_map_per_fmr = 1;
691
692 return 0;
693}
694
695
696/**
697 * nes_query_port
698 */
699static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
700{
701 memset(props, 0, sizeof(*props));
702
703 props->max_mtu = IB_MTU_2048;
704 props->active_mtu = IB_MTU_2048;
705 props->lid = 1;
706 props->lmc = 0;
707 props->sm_lid = 0;
708 props->sm_sl = 0;
709 props->state = IB_PORT_ACTIVE;
710 props->phys_state = 0;
711 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
712 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
713 props->gid_tbl_len = 1;
714 props->pkey_tbl_len = 1;
715 props->qkey_viol_cntr = 0;
716 props->active_width = IB_WIDTH_4X;
717 props->active_speed = 1;
718 props->max_msg_sz = 0x80000000;
719
720 return 0;
721}
722
723
724/**
725 * nes_modify_port
726 */
727static int nes_modify_port(struct ib_device *ibdev, u8 port,
728 int port_modify_mask, struct ib_port_modify *props)
729{
730 return 0;
731}
732
733
734/**
735 * nes_query_pkey
736 */
737static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
738{
739 *pkey = 0;
740 return 0;
741}
742
743
744/**
745 * nes_query_gid
746 */
747static int nes_query_gid(struct ib_device *ibdev, u8 port,
748 int index, union ib_gid *gid)
749{
750 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
751
752 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
753 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
754
755 return 0;
756}
757
758
759/**
760 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
761 * of all objects associated with a particular user-mode client.
762 */
763static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
764 struct ib_udata *udata)
765{
766 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
767 struct nes_device *nesdev = nesvnic->nesdev;
768 struct nes_adapter *nesadapter = nesdev->nesadapter;
769 struct nes_alloc_ucontext_req req;
770 struct nes_alloc_ucontext_resp uresp;
771 struct nes_ucontext *nes_ucontext;
772 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
773
774
775 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
776 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
777 return ERR_PTR(-EINVAL);
778 }
779
780 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
781 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
782 req.userspace_ver, NES_ABI_USERSPACE_VER);
783 return ERR_PTR(-EINVAL);
784 }
785
786
787 memset(&uresp, 0, sizeof uresp);
788
789 uresp.max_qps = nesibdev->max_qp;
790 uresp.max_pds = nesibdev->max_pd;
791 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
792 uresp.virtwq = nesadapter->virtwq;
793 uresp.kernel_ver = NES_ABI_KERNEL_VER;
794
795 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
796 if (!nes_ucontext)
797 return ERR_PTR(-ENOMEM);
798
799 nes_ucontext->nesdev = nesdev;
800 nes_ucontext->mmap_wq_offset = uresp.max_pds;
801 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
802 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
803 PAGE_SIZE;
804
805
806 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
807 kfree(nes_ucontext);
808 return ERR_PTR(-EFAULT);
809 }
810
811 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
812 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
813 atomic_set(&nes_ucontext->usecnt, 1);
814 return &nes_ucontext->ibucontext;
815}
816
817
818/**
819 * nes_dealloc_ucontext
820 */
821static int nes_dealloc_ucontext(struct ib_ucontext *context)
822{
823 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
824 /* struct nes_device *nesdev = nesvnic->nesdev; */
825 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
826
827 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
828 return 0;
829 kfree(nes_ucontext);
830 return 0;
831}
832
833
834/**
835 * nes_mmap
836 */
837static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
838{
839 unsigned long index;
840 struct nes_vnic *nesvnic = to_nesvnic(context->device);
841 struct nes_device *nesdev = nesvnic->nesdev;
842 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
843 struct nes_ucontext *nes_ucontext;
844 struct nes_qp *nesqp;
845
846 nes_ucontext = to_nesucontext(context);
847
848
849 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
850 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
851 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
852 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
853 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
854 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
855 return -EFAULT;
856 }
857 nesqp = nes_ucontext->mmap_nesqp[index];
858 if (nesqp == NULL) {
859 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
860 return -EFAULT;
861 }
862 if (remap_pfn_range(vma, vma->vm_start,
863 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
864 vma->vm_end - vma->vm_start,
865 vma->vm_page_prot)) {
866 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
867 return -EAGAIN;
868 }
869 vma->vm_private_data = nesqp;
870 return 0;
871 } else {
872 index = vma->vm_pgoff;
873 if (!test_bit(index, nes_ucontext->allocated_doorbells))
874 return -EFAULT;
875
876 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
877 if (io_remap_pfn_range(vma, vma->vm_start,
878 (nesdev->doorbell_start +
879 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
880 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
881 return -EAGAIN;
882 vma->vm_private_data = nes_ucontext;
883 return 0;
884 }
885
886 return -ENOSYS;
887}
888
889
890/**
891 * nes_alloc_pd
892 */
893static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
894 struct ib_ucontext *context, struct ib_udata *udata)
895{
896 struct nes_pd *nespd;
897 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
898 struct nes_device *nesdev = nesvnic->nesdev;
899 struct nes_adapter *nesadapter = nesdev->nesadapter;
900 struct nes_ucontext *nesucontext;
901 struct nes_alloc_pd_resp uresp;
902 u32 pd_num = 0;
903 int err;
904
905 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
906 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
907 atomic_read(&nesvnic->netdev->refcnt));
908
909 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
910 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
911 if (err) {
912 return ERR_PTR(err);
913 }
914
915 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
916 if (!nespd) {
917 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
918 return ERR_PTR(-ENOMEM);
919 }
920
921 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
922 nespd, nesvnic->nesibdev->ibdev.name);
923
924 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
925
926 if (context) {
927 nesucontext = to_nesucontext(context);
928 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
929 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
930 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
931 nespd->mmap_db_index, nespd->pd_id);
932 if (nespd->mmap_db_index > NES_MAX_USER_DB_REGIONS) {
933 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
934 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
935 kfree(nespd);
936 return ERR_PTR(-ENOMEM);
937 }
938
939 uresp.pd_id = nespd->pd_id;
940 uresp.mmap_db_index = nespd->mmap_db_index;
941 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
942 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
943 kfree(nespd);
944 return ERR_PTR(-EFAULT);
945 }
946
947 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
948 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
949 nesucontext->first_free_db = nespd->mmap_db_index + 1;
950 }
951
952 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
953 return &nespd->ibpd;
954}
955
956
957/**
958 * nes_dealloc_pd
959 */
960static int nes_dealloc_pd(struct ib_pd *ibpd)
961{
962 struct nes_ucontext *nesucontext;
963 struct nes_pd *nespd = to_nespd(ibpd);
964 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
965 struct nes_device *nesdev = nesvnic->nesdev;
966 struct nes_adapter *nesadapter = nesdev->nesadapter;
967
968 if ((ibpd->uobject) && (ibpd->uobject->context)) {
969 nesucontext = to_nesucontext(ibpd->uobject->context);
970 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
971 nespd->mmap_db_index);
972 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
973 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
974 if (nesucontext->first_free_db > nespd->mmap_db_index) {
975 nesucontext->first_free_db = nespd->mmap_db_index;
976 }
977 }
978
979 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
980 nespd->pd_id, nespd);
981 nes_free_resource(nesadapter, nesadapter->allocated_pds,
982 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
983 kfree(nespd);
984
985 return 0;
986}
987
988
989/**
990 * nes_create_ah
991 */
992static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
993{
994 return ERR_PTR(-ENOSYS);
995}
996
997
998/**
999 * nes_destroy_ah
1000 */
1001static int nes_destroy_ah(struct ib_ah *ah)
1002{
1003 return -ENOSYS;
1004}
1005
1006
1007/**
1008 * nes_get_encoded_size
1009 */
1010static inline u8 nes_get_encoded_size(int *size)
1011{
1012 u8 encoded_size = 0;
1013 if (*size <= 32) {
1014 *size = 32;
1015 encoded_size = 1;
1016 } else if (*size <= 128) {
1017 *size = 128;
1018 encoded_size = 2;
1019 } else if (*size <= 512) {
1020 *size = 512;
1021 encoded_size = 3;
1022 }
1023 return (encoded_size);
1024}
1025
1026
1027
1028/**
1029 * nes_setup_virt_qp
1030 */
1031static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
1032 struct nes_vnic *nesvnic, int sq_size, int rq_size)
1033{
1034 unsigned long flags;
1035 void *mem;
1036 __le64 *pbl = NULL;
1037 __le64 *tpbl;
1038 __le64 *pblbuffer;
1039 struct nes_device *nesdev = nesvnic->nesdev;
1040 struct nes_adapter *nesadapter = nesdev->nesadapter;
1041 u32 pbl_entries;
1042 u8 rq_pbl_entries;
1043 u8 sq_pbl_entries;
1044
1045 pbl_entries = nespbl->pbl_size >> 3;
1046 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%p\n",
1047 nespbl->pbl_size, pbl_entries,
1048 (void *)nespbl->pbl_vbase,
1049 (void *)nespbl->pbl_pbase);
1050 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
1051 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
1052 /* the first pbl to be fro the rq_vbase... */
1053 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1054 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1055 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1056 if (!nespbl->page) {
1057 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1058 kfree(nespbl);
1059 return -ENOMEM;
1060 }
1061
1062 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1063 nesqp->page = nespbl->page;
1064 if (!nesqp->hwqp.sq_vbase) {
1065 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1066 kfree(nespbl);
1067 return -ENOMEM;
1068 }
1069
1070 /* Now to get to sq.. we need to calculate how many */
1071 /* PBL entries were used by the rq.. */
1072 pbl += sq_pbl_entries;
1073 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1074 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1075 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1076
1077 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%p rq_vbase=%p rq_pbase=%p\n",
1078 nesqp->hwqp.sq_vbase, (void *)nesqp->hwqp.sq_pbase,
1079 nesqp->hwqp.rq_vbase, (void *)nesqp->hwqp.rq_pbase);
1080 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1081 if (!nesadapter->free_256pbl) {
1082 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1083 nespbl->pbl_pbase);
1084 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1085 kunmap(nesqp->page);
1086 kfree(nespbl);
1087 return -ENOMEM;
1088 }
1089 nesadapter->free_256pbl--;
1090 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1091
1092 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1093 pblbuffer = nesqp->pbl_vbase;
1094 if (!nesqp->pbl_vbase) {
1095 /* memory allocated during nes_reg_user_mr() */
1096 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1097 nespbl->pbl_pbase);
1098 kfree(nespbl);
1099 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1100 nesadapter->free_256pbl++;
1101 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1102 kunmap(nesqp->page);
1103 return -ENOMEM;
1104 }
1105 memset(nesqp->pbl_vbase, 0, 256);
1106 /* fill in the page address in the pbl buffer.. */
1107 tpbl = pblbuffer + 16;
1108 pbl = (__le64 *)nespbl->pbl_vbase;
1109 while (sq_pbl_entries--)
1110 *tpbl++ = *pbl++;
1111 tpbl = pblbuffer;
1112 while (rq_pbl_entries--)
1113 *tpbl++ = *pbl++;
1114
1115 /* done with memory allocated during nes_reg_user_mr() */
1116 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1117 nespbl->pbl_pbase);
1118 kfree(nespbl);
1119
1120 nesqp->qp_mem_size =
1121 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1122 /* Round up to a multiple of a page */
1123 nesqp->qp_mem_size += PAGE_SIZE - 1;
1124 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1125
1126 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1127 &nesqp->hwqp.q2_pbase);
1128
1129 if (!mem) {
1130 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1131 nesqp->pbl_vbase = NULL;
1132 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1133 nesadapter->free_256pbl++;
1134 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1135 kunmap(nesqp->page);
1136 return -ENOMEM;
1137 }
1138 nesqp->hwqp.q2_vbase = mem;
1139 mem += 256;
1140 memset(nesqp->hwqp.q2_vbase, 0, 256);
1141 nesqp->nesqp_context = mem;
1142 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1143 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1144
1145 return 0;
1146}
1147
1148
1149/**
1150 * nes_setup_mmap_qp
1151 */
1152static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1153 int sq_size, int rq_size)
1154{
1155 void *mem;
1156 struct nes_device *nesdev = nesvnic->nesdev;
1157
1158 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1159 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1160 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1161 256; /* this is Q2 */
1162 /* Round up to a multiple of a page */
1163 nesqp->qp_mem_size += PAGE_SIZE - 1;
1164 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1165
1166 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1167 &nesqp->hwqp.sq_pbase);
1168 if (!mem)
1169 return -ENOMEM;
1170 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1171 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1172 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1173
1174 memset(mem, 0, nesqp->qp_mem_size);
1175
1176 nesqp->hwqp.sq_vbase = mem;
1177 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1178
1179 nesqp->hwqp.rq_vbase = mem;
1180 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1181 sizeof(struct nes_hw_qp_wqe) * sq_size;
1182 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1183
1184 nesqp->hwqp.q2_vbase = mem;
1185 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1186 sizeof(struct nes_hw_qp_wqe) * rq_size;
1187 mem += 256;
1188 memset(nesqp->hwqp.q2_vbase, 0, 256);
1189
1190 nesqp->nesqp_context = mem;
1191 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1192 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1193 return 0;
1194}
1195
1196
1197/**
1198 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1199 */
1200static inline void nes_free_qp_mem(struct nes_device *nesdev,
1201 struct nes_qp *nesqp, int virt_wqs)
1202{
1203 unsigned long flags;
1204 struct nes_adapter *nesadapter = nesdev->nesadapter;
1205 if (!virt_wqs) {
1206 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1207 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1208 }else {
1209 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1210 nesadapter->free_256pbl++;
1211 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1212 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1213 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1214 nesqp->pbl_vbase = NULL;
1215 kunmap(nesqp->page);
1216 }
1217}
1218
1219
1220/**
1221 * nes_create_qp
1222 */
1223static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1224 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1225{
1226 u64 u64temp= 0;
1227 u64 u64nesqp = 0;
1228 struct nes_pd *nespd = to_nespd(ibpd);
1229 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1230 struct nes_device *nesdev = nesvnic->nesdev;
1231 struct nes_adapter *nesadapter = nesdev->nesadapter;
1232 struct nes_qp *nesqp;
1233 struct nes_cq *nescq;
1234 struct nes_ucontext *nes_ucontext;
1235 struct nes_hw_cqp_wqe *cqp_wqe;
1236 struct nes_cqp_request *cqp_request;
1237 struct nes_create_qp_req req;
1238 struct nes_create_qp_resp uresp;
1239 struct nes_pbl *nespbl = NULL;
1240 u32 qp_num = 0;
1241 u32 opcode = 0;
1242 /* u32 counter = 0; */
1243 void *mem;
1244 unsigned long flags;
1245 int ret;
1246 int err;
1247 int virt_wqs = 0;
1248 int sq_size;
1249 int rq_size;
1250 u8 sq_encoded_size;
1251 u8 rq_encoded_size;
1252 /* int counter; */
1253
1254 atomic_inc(&qps_created);
1255 switch (init_attr->qp_type) {
1256 case IB_QPT_RC:
1257 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1258 init_attr->cap.max_inline_data = 0;
1259 } else {
1260 init_attr->cap.max_inline_data = 64;
1261 }
1262 sq_size = init_attr->cap.max_send_wr;
1263 rq_size = init_attr->cap.max_recv_wr;
1264
1265 // check if the encoded sizes are OK or not...
1266 sq_encoded_size = nes_get_encoded_size(&sq_size);
1267 rq_encoded_size = nes_get_encoded_size(&rq_size);
1268
1269 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1270 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1271 rq_size, sq_size);
1272 return ERR_PTR(-EINVAL);
1273 }
1274
1275 init_attr->cap.max_send_wr = sq_size -2;
1276 init_attr->cap.max_recv_wr = rq_size -1;
1277 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1278
1279 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1280 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1281 if (ret) {
1282 return ERR_PTR(ret);
1283 }
1284
1285 /* Need 512 (actually now 1024) byte alignment on this structure */
1286 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1287 if (!mem) {
1288 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1289 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1290 return ERR_PTR(-ENOMEM);
1291 }
1292 u64nesqp = (unsigned long)mem;
1293 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1294 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1295 u64nesqp &= ~u64temp;
1296 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1297 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1298 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1299 nesqp->allocated_buffer = mem;
1300
1301 if (udata) {
1302 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1303 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1304 kfree(nesqp->allocated_buffer);
1305 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1306 return NULL;
1307 }
1308 if (req.user_wqe_buffers) {
1309 virt_wqs = 1;
1310 }
1311 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1312 nesqp->user_mode = 1;
1313 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1314 if (virt_wqs) {
1315 err = 1;
1316 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1317 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1318 list_del(&nespbl->list);
1319 err = 0;
1320 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1321 nespbl, nespbl->user_base);
1322 break;
1323 }
1324 }
1325 if (err) {
1326 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1327 (long long unsigned int)req.user_wqe_buffers);
1328 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1329 kfree(nesqp->allocated_buffer);
9300c0c0 1330 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1331 }
1332 }
1333
1334 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1335 nesqp->mmap_sq_db_index =
1336 find_next_zero_bit(nes_ucontext->allocated_wqs,
1337 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1338 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1339 nespd->mmap_db_index); */
51af33e8 1340 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
3c2d774c
GS		 1341 nes_debug(NES_DBG_QP,
1342 "db index > max user regions, failing create QP\n");
1343 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1344 if (virt_wqs) {
1345 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1346 nespbl->pbl_pbase);
1347 kfree(nespbl);
1348 }
1349 kfree(nesqp->allocated_buffer);
1350 return ERR_PTR(-ENOMEM);
1351 }
1352 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1353 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1354 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1355 } else {
1356 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1357 kfree(nesqp->allocated_buffer);
1358 return ERR_PTR(-EFAULT);
1359 }
1360 }
1361 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1362 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1363 if (err) {
1364 nes_debug(NES_DBG_QP,
1365 "error geting qp mem code = %d\n", err);
1366 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1367 kfree(nesqp->allocated_buffer);
1368 return ERR_PTR(-ENOMEM);
1369 }
1370
1371 nesqp->hwqp.sq_size = sq_size;
1372 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1373 nesqp->hwqp.sq_head = 1;
1374 nesqp->hwqp.rq_size = rq_size;
1375 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1376 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1377 (void *)nesqp->nesqp_context_pbase);
1378 */
1379 nesqp->hwqp.qp_id = qp_num;
1380 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1381 nesqp->nespd = nespd;
1382
1383 nescq = to_nescq(init_attr->send_cq);
1384 nesqp->nesscq = nescq;
1385 nescq = to_nescq(init_attr->recv_cq);
1386 nesqp->nesrcq = nescq;
1387
1388 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1389 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1390 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1391 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1392 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1393 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1394 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1395 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1396 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1397 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1398 u64temp = (u64)nesqp->hwqp.sq_pbase;
1399 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1400 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1401
1402
1403 if (!virt_wqs) {
1404 u64temp = (u64)nesqp->hwqp.sq_pbase;
1405 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1406 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1407 u64temp = (u64)nesqp->hwqp.rq_pbase;
1408 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1409 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1410 } else {
1411 u64temp = (u64)nesqp->pbl_pbase;
1412 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1413 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1414 }
1415
1416 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1417 nesvnic->next_qp_nic_index,
1418 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1419 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1420 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1421 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1422 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1423 nesvnic->next_qp_nic_index++;
1424 if ((nesvnic->next_qp_nic_index > 3) ||
1425 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1426 nesvnic->next_qp_nic_index = 0;
1427 }
1428 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1429
1430 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1431 u64temp = (u64)nesqp->hwqp.q2_pbase;
1432 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1433 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1434 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1435 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1436 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1437 ((((u32)nesadapter->max_irrq_wr) <<
1438 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1439 if (disable_mpa_crc) {
1440 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1441 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1442 }
1443
1444
1445 /* Create the QP */
1446 cqp_request = nes_get_cqp_request(nesdev);
1447 if (cqp_request == NULL) {
1448 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1449 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1450 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1451 kfree(nesqp->allocated_buffer);
1452 return ERR_PTR(-ENOMEM);
1453 }
1454 cqp_request->waiting = 1;
1455 cqp_wqe = &cqp_request->cqp_wqe;
1456
1457 if (!virt_wqs) {
1458 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1459 NES_CQP_QP_IWARP_STATE_IDLE;
1460 } else {
1461 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1462 NES_CQP_QP_IWARP_STATE_IDLE;
1463 }
1464 opcode |= NES_CQP_QP_CQS_VALID;
1465 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1466 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1467 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1468
1469 u64temp = (u64)nesqp->nesqp_context_pbase;
1470 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1471
1472 atomic_set(&cqp_request->refcount, 2);
1473 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
1474
1475 /* Wait for CQP */
1476 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1477 nesqp->hwqp.qp_id);
1478 ret = wait_event_timeout(cqp_request->waitq,
1479 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1480 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1481 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1482 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1483 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1484 cqp_request->major_code, cqp_request->minor_code);
1485 if ((!ret) || (cqp_request->major_code)) {
1486 if (atomic_dec_and_test(&cqp_request->refcount)) {
1487 if (cqp_request->dynamic) {
1488 kfree(cqp_request);
1489 } else {
1490 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1491 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1492 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1493 }
1494 }
1495 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1496 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1497 kfree(nesqp->allocated_buffer);
1498 if (!ret) {
1499 return ERR_PTR(-ETIME);
1500 } else {
1501 return ERR_PTR(-EIO);
1502 }
1503 } else {
1504 if (atomic_dec_and_test(&cqp_request->refcount)) {
1505 if (cqp_request->dynamic) {
1506 kfree(cqp_request);
1507 } else {
1508 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1509 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1510 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1511 }
1512 }
1513 }
1514
1515 if (ibpd->uobject) {
1516 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1517 uresp.actual_sq_size = sq_size;
1518 uresp.actual_rq_size = rq_size;
1519 uresp.qp_id = nesqp->hwqp.qp_id;
1520 uresp.nes_drv_opt = nes_drv_opt;
1521 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1522 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1523 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1524 kfree(nesqp->allocated_buffer);
1525 return ERR_PTR(-EFAULT);
1526 }
1527 }
1528
1529 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1530 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1531 spin_lock_init(&nesqp->lock);
1532 init_waitqueue_head(&nesqp->state_waitq);
1533 init_waitqueue_head(&nesqp->kick_waitq);
1534 nes_add_ref(&nesqp->ibqp);
1535 break;
1536 default:
1537 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1538 return ERR_PTR(-EINVAL);
1539 break;
1540 }
1541
1542 /* update the QP table */
1543 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1544 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1545 atomic_read(&nesvnic->netdev->refcnt));
1546
1547 return &nesqp->ibqp;
1548}
1549
1550
1551/**
1552 * nes_destroy_qp
1553 */
1554static int nes_destroy_qp(struct ib_qp *ibqp)
1555{
1556 struct nes_qp *nesqp = to_nesqp(ibqp);
1557 /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
1558 struct nes_ucontext *nes_ucontext;
1559 struct ib_qp_attr attr;
1560 struct iw_cm_id *cm_id;
1561 struct iw_cm_event cm_event;
1562 int ret;
1563
1564 atomic_inc(&sw_qps_destroyed);
1565 nesqp->destroyed = 1;
1566
1567 /* Blow away the connection if it exists. */
1568 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1569 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1570 attr.qp_state = IB_QPS_ERR;
1571 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1572 }
1573
1574 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1575 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1576 cm_id = nesqp->cm_id;
1577 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1578 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1579 cm_event.local_addr = cm_id->local_addr;
1580 cm_event.remote_addr = cm_id->remote_addr;
1581 cm_event.private_data = NULL;
1582 cm_event.private_data_len = 0;
1583
1584 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1585 "QP%u. cm_id = %p, refcount = %u. \n",
1586 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1587
1588 cm_id->rem_ref(cm_id);
1589 ret = cm_id->event_handler(cm_id, &cm_event);
1590 if (ret)
1591 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1592 }
1593
1594
1595 if (nesqp->user_mode) {
1596 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1597 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1598 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1599 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1600 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1601 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1602 }
1603 }
1604 if (nesqp->pbl_pbase)
1605 kunmap(nesqp->page);
1606 }
1607
1608 nes_rem_ref(&nesqp->ibqp);
1609 return 0;
1610}
1611
1612
1613/**
1614 * nes_create_cq
1615 */
1616static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1617 int comp_vector,
1618 struct ib_ucontext *context, struct ib_udata *udata)
1619{
1620 u64 u64temp;
1621 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1622 struct nes_device *nesdev = nesvnic->nesdev;
1623 struct nes_adapter *nesadapter = nesdev->nesadapter;
1624 struct nes_cq *nescq;
1625 struct nes_ucontext *nes_ucontext = NULL;
1626 struct nes_cqp_request *cqp_request;
1627 void *mem = NULL;
1628 struct nes_hw_cqp_wqe *cqp_wqe;
1629 struct nes_pbl *nespbl = NULL;
1630 struct nes_create_cq_req req;
1631 struct nes_create_cq_resp resp;
1632 u32 cq_num = 0;
1633 u32 opcode = 0;
1634 u32 pbl_entries = 1;
1635 int err;
1636 unsigned long flags;
1637 int ret;
1638
1639 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1640 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1641 if (err) {
1642 return ERR_PTR(err);
1643 }
1644
1645 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1646 if (!nescq) {
1647 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1648 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1649 return ERR_PTR(-ENOMEM);
1650 }
1651
1652 nescq->hw_cq.cq_size = max(entries + 1, 5);
1653 nescq->hw_cq.cq_number = cq_num;
1654 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1655
1656
1657 if (context) {
1658 nes_ucontext = to_nesucontext(context);
1659 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1660 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1661 kfree(nescq);
1662 return ERR_PTR(-EFAULT);
1663 }
1664 nesvnic->mcrq_ucontext = nes_ucontext;
1665 nes_ucontext->mcrqf = req.mcrqf;
1666 if (nes_ucontext->mcrqf) {
1667 if (nes_ucontext->mcrqf & 0x80000000)
1668 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 12 + (nes_ucontext->mcrqf & 0xf) - 1;
1669 else if (nes_ucontext->mcrqf & 0x40000000)
1670 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1671 else
1672 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1673 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1674 }
1675 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1676 (unsigned long)req.user_cq_buffer, entries);
9300c0c0 1677 err = 1;
3c2d774c
GS		 1678 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1679 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1680 list_del(&nespbl->list);
1681 err = 0;
1682 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1683 nespbl);
1684 break;
1685 }
1686 }
1687 if (err) {
1688 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1689 kfree(nescq);
9300c0c0 1690 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1691 }
1692
1693 pbl_entries = nespbl->pbl_size >> 3;
1694 nescq->cq_mem_size = 0;
1695 } else {
1696 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1697 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1698 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1699
1700 /* allocate the physical buffer space */
1701 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1702 &nescq->hw_cq.cq_pbase);
1703 if (!mem) {
1704 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1705 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1706 kfree(nescq);
1707 return ERR_PTR(-ENOMEM);
1708 }
1709
1710 memset(mem, 0, nescq->cq_mem_size);
1711 nescq->hw_cq.cq_vbase = mem;
1712 nescq->hw_cq.cq_head = 0;
1713 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1714 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1715 (u32)nescq->hw_cq.cq_pbase);
1716 }
1717
1718 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1719 spin_lock_init(&nescq->lock);
1720
1721 /* send CreateCQ request to CQP */
1722 cqp_request = nes_get_cqp_request(nesdev);
1723 if (cqp_request == NULL) {
1724 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1725 if (!context)
1726 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1727 nescq->hw_cq.cq_pbase);
1728 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1729 kfree(nescq);
1730 return ERR_PTR(-ENOMEM);
1731 }
1732 cqp_request->waiting = 1;
1733 cqp_wqe = &cqp_request->cqp_wqe;
1734
1735 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1736 NES_CQP_CQ_CHK_OVERFLOW |
1737 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1738
1739 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1740
1741 if (pbl_entries != 1) {
1742 if (pbl_entries > 32) {
1743 /* use 4k pbl */
1744 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1745 if (nesadapter->free_4kpbl == 0) {
1746 if (cqp_request->dynamic) {
1747 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1748 kfree(cqp_request);
1749 } else {
1750 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1751 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1752 }
1753 if (!context)
1754 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1755 nescq->hw_cq.cq_pbase);
1756 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1757 kfree(nescq);
1758 return ERR_PTR(-ENOMEM);
1759 } else {
1760 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1761 nescq->virtual_cq = 2;
1762 nesadapter->free_4kpbl--;
1763 }
1764 } else {
1765 /* use 256 byte pbl */
1766 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1767 if (nesadapter->free_256pbl == 0) {
1768 if (cqp_request->dynamic) {
1769 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1770 kfree(cqp_request);
1771 } else {
1772 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1773 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1774 }
1775 if (!context)
1776 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1777 nescq->hw_cq.cq_pbase);
1778 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1779 kfree(nescq);
1780 return ERR_PTR(-ENOMEM);
1781 } else {
1782 opcode |= NES_CQP_CQ_VIRT;
1783 nescq->virtual_cq = 1;
1784 nesadapter->free_256pbl--;
1785 }
1786 }
1787 }
1788
1789 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1790
1791 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1792 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1793 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1794 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1795
1796 if (context) {
1797 if (pbl_entries != 1)
1798 u64temp = (u64)nespbl->pbl_pbase;
1799 else
1800 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1801 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1802 nes_ucontext->mmap_db_index[0]);
1803 } else {
1804 u64temp = (u64)nescq->hw_cq.cq_pbase;
1805 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1806 }
1807 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1808 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1809 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1810 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1811 cpu_to_le32((u32)(u64temp >> 1));
1812 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1813 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1814
1815 atomic_set(&cqp_request->refcount, 2);
1816 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
1817
1818 /* Wait for CQP */
1819 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1820 nescq->hw_cq.cq_number);
1821 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1822 NES_EVENT_TIMEOUT * 2);
1823 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1824 nescq->hw_cq.cq_number, ret);
1825 if ((!ret) || (cqp_request->major_code)) {
1826 if (atomic_dec_and_test(&cqp_request->refcount)) {
1827 if (cqp_request->dynamic) {
1828 kfree(cqp_request);
1829 } else {
1830 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1831 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1832 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1833 }
1834 }
1835 nes_debug(NES_DBG_CQ, "iWARP CQ%u create timeout expired, major code = 0x%04X,"
1836 " minor code = 0x%04X\n",
1837 nescq->hw_cq.cq_number, cqp_request->major_code, cqp_request->minor_code);
1838 if (!context)
1839 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1840 nescq->hw_cq.cq_pbase);
1841 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1842 kfree(nescq);
1843 return ERR_PTR(-EIO);
1844 } else {
1845 if (atomic_dec_and_test(&cqp_request->refcount)) {
1846 if (cqp_request->dynamic) {
1847 kfree(cqp_request);
1848 } else {
1849 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1850 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1851 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1852 }
1853 }
1854 }
1855
1856 if (context) {
1857 /* free the nespbl */
1858 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1859 nespbl->pbl_pbase);
1860 kfree(nespbl);
1861 resp.cq_id = nescq->hw_cq.cq_number;
1862 resp.cq_size = nescq->hw_cq.cq_size;
1863 resp.mmap_db_index = 0;
1864 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1865 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1866 kfree(nescq);
1867 return ERR_PTR(-EFAULT);
1868 }
1869 }
1870
1871 return &nescq->ibcq;
1872}
1873
1874
1875/**
1876 * nes_destroy_cq
1877 */
1878static int nes_destroy_cq(struct ib_cq *ib_cq)
1879{
1880 struct nes_cq *nescq;
1881 struct nes_device *nesdev;
1882 struct nes_vnic *nesvnic;
1883 struct nes_adapter *nesadapter;
1884 struct nes_hw_cqp_wqe *cqp_wqe;
1885 struct nes_cqp_request *cqp_request;
1886 unsigned long flags;
1887 u32 opcode = 0;
1888 int ret;
1889
1890 if (ib_cq == NULL)
1891 return 0;
1892
1893 nescq = to_nescq(ib_cq);
1894 nesvnic = to_nesvnic(ib_cq->device);
1895 nesdev = nesvnic->nesdev;
1896 nesadapter = nesdev->nesadapter;
1897
1898 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1899
1900 /* Send DestroyCQ request to CQP */
1901 cqp_request = nes_get_cqp_request(nesdev);
1902 if (cqp_request == NULL) {
1903 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1904 return -ENOMEM;
1905 }
1906 cqp_request->waiting = 1;
1907 cqp_wqe = &cqp_request->cqp_wqe;
1908 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1909 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1910 if (nescq->virtual_cq == 1) {
1911 nesadapter->free_256pbl++;
1912 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1913 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1914 __FUNCTION__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1915 }
1916 } else if (nescq->virtual_cq == 2) {
1917 nesadapter->free_4kpbl++;
1918 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1919 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1920 __FUNCTION__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1921 }
1922 opcode |= NES_CQP_CQ_4KB_CHUNK;
1923 }
1924
1925 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1926
1927 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1928 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1929 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1930 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1931 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1932 atomic_set(&cqp_request->refcount, 2);
1933 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
1934
1935 /* Wait for CQP */
1936 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1937 nescq->hw_cq.cq_number);
1938 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1939 NES_EVENT_TIMEOUT);
1940 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1941 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1942 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1943 cqp_request->minor_code);
1944 if ((!ret) || (cqp_request->major_code)) {
1945 if (atomic_dec_and_test(&cqp_request->refcount)) {
1946 if (cqp_request->dynamic) {
1947 kfree(cqp_request);
1948 } else {
1949 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1950 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1951 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1952 }
1953 }
1954 if (!ret) {
1955 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1956 nescq->hw_cq.cq_number);
1957 ret = -ETIME;
1958 } else {
1959 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1960 nescq->hw_cq.cq_number);
1961 ret = -EIO;
1962 }
1963 } else {
1964 ret = 0;
1965 if (atomic_dec_and_test(&cqp_request->refcount)) {
1966 if (cqp_request->dynamic) {
1967 kfree(cqp_request);
1968 } else {
1969 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1970 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1971 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1972 }
1973 }
1974 }
1975
1976 if (nescq->cq_mem_size)
1977 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1978 (void *)nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1979 kfree(nescq);
1980
1981 return ret;
1982}
1983
1984
1985/**
1986 * nes_reg_mr
1987 */
1988static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1989 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1990 dma_addr_t single_buffer, u16 pbl_count, u16 residual_page_count,
1991 int acc, u64 *iova_start)
1992{
1993 struct nes_hw_cqp_wqe *cqp_wqe;
1994 struct nes_cqp_request *cqp_request;
1995 unsigned long flags;
1996 int ret;
1997 struct nes_adapter *nesadapter = nesdev->nesadapter;
1998 /* int count; */
1999 u32 opcode = 0;
2000 u16 major_code;
2001
2002 /* Register the region with the adapter */
2003 cqp_request = nes_get_cqp_request(nesdev);
2004 if (cqp_request == NULL) {
2005 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2006 return -ENOMEM;
2007 }
2008 cqp_request->waiting = 1;
2009 cqp_wqe = &cqp_request->cqp_wqe;
2010
2011 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2012 /* track PBL resources */
2013 if (pbl_count != 0) {
2014 if (pbl_count > 1) {
2015 /* Two level PBL */
2016 if ((pbl_count+1) > nesadapter->free_4kpbl) {
2017 nes_debug(NES_DBG_MR, "Out of 4KB Pbls for two level request.\n");
2018 if (cqp_request->dynamic) {
2019 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2020 kfree(cqp_request);
2021 } else {
2022 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2023 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2024 }
2025 return -ENOMEM;
2026 } else {
2027 nesadapter->free_4kpbl -= pbl_count+1;
2028 }
2029 } else if (residual_page_count > 32) {
2030 if (pbl_count > nesadapter->free_4kpbl) {
2031 nes_debug(NES_DBG_MR, "Out of 4KB Pbls.\n");
2032 if (cqp_request->dynamic) {
2033 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2034 kfree(cqp_request);
2035 } else {
2036 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2037 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2038 }
2039 return -ENOMEM;
2040 } else {
2041 nesadapter->free_4kpbl -= pbl_count;
2042 }
2043 } else {
2044 if (pbl_count > nesadapter->free_256pbl) {
2045 nes_debug(NES_DBG_MR, "Out of 256B Pbls.\n");
2046 if (cqp_request->dynamic) {
2047 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2048 kfree(cqp_request);
2049 } else {
2050 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2051 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2052 }
2053 return -ENOMEM;
2054 } else {
2055 nesadapter->free_256pbl -= pbl_count;
2056 }
2057 }
2058 }
2059
2060 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2061
2062 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2063 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2064 if (acc & IB_ACCESS_LOCAL_WRITE)
2065 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2066 if (acc & IB_ACCESS_REMOTE_WRITE)
2067 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2068 if (acc & IB_ACCESS_REMOTE_READ)
2069 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2070 if (acc & IB_ACCESS_MW_BIND)
2071 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2072
2073 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2074 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2075 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2076 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2077
2078 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2079 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2080 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2081 cpu_to_le32(nespd->pd_id & 0x00007fff);
2082 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2083
2084 if (pbl_count == 0) {
2085 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2086 } else {
2087 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2088 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2089 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX,
2090 (((pbl_count - 1) * 4096) + (residual_page_count*8)));
2091
2092 if ((pbl_count > 1) || (residual_page_count > 32))
2093 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2094 }
2095 barrier();
2096
2097 atomic_set(&cqp_request->refcount, 2);
2098 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
2099
2100 /* Wait for CQP */
2101 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2102 NES_EVENT_TIMEOUT);
2103 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2104 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2105 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2106 major_code = cqp_request->major_code;
2107 if (atomic_dec_and_test(&cqp_request->refcount)) {
2108 if (cqp_request->dynamic) {
2109 kfree(cqp_request);
2110 } else {
2111 spin_lock_irqsave(&nesdev->cqp.lock, flags);
2112 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2113 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
2114 }
2115 }
2116 if (!ret)
2117 return -ETIME;
2118 else if (major_code)
2119 return -EIO;
2120 else
2121 return 0;
2122
2123 return 0;
2124}
2125
2126
2127/**
2128 * nes_reg_phys_mr
2129 */
2130static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2131 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2132 u64 * iova_start)
2133{
2134 u64 region_length;
2135 struct nes_pd *nespd = to_nespd(ib_pd);
2136 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2137 struct nes_device *nesdev = nesvnic->nesdev;
2138 struct nes_adapter *nesadapter = nesdev->nesadapter;
2139 struct nes_mr *nesmr;
2140 struct ib_mr *ibmr;
2141 struct nes_vpbl vpbl;
2142 struct nes_root_vpbl root_vpbl;
2143 u32 stag;
2144 u32 i;
2145 u32 stag_index = 0;
2146 u32 next_stag_index = 0;
2147 u32 driver_key = 0;
2148 u32 root_pbl_index = 0;
2149 u32 cur_pbl_index = 0;
2150 int err = 0, pbl_depth = 0;
2151 int ret = 0;
2152 u16 pbl_count = 0;
2153 u8 single_page = 1;
2154 u8 stag_key = 0;
2155
2156 pbl_depth = 0;
2157 region_length = 0;
2158 vpbl.pbl_vbase = NULL;
2159 root_vpbl.pbl_vbase = NULL;
2160 root_vpbl.pbl_pbase = 0;
2161
2162 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2163 stag_key = (u8)next_stag_index;
2164
2165 driver_key = 0;
2166
2167 next_stag_index >>= 8;
2168 next_stag_index %= nesadapter->max_mr;
2169 if (num_phys_buf > (1024*512)) {
2170 return ERR_PTR(-E2BIG);
2171 }
2172
2173 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2174 &stag_index, &next_stag_index);
2175 if (err) {
2176 return ERR_PTR(err);
2177 }
2178
2179 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2180 if (!nesmr) {
2181 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2182 return ERR_PTR(-ENOMEM);
2183 }
2184
2185 for (i = 0; i < num_phys_buf; i++) {
2186
2187 if ((i & 0x01FF) == 0) {
2188 if (root_pbl_index == 1) {
2189 /* Allocate the root PBL */
2190 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2191 &root_vpbl.pbl_pbase);
2192 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2193 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2194 if (!root_vpbl.pbl_vbase) {
2195 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2196 vpbl.pbl_pbase);
2197 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2198 kfree(nesmr);
2199 return ERR_PTR(-ENOMEM);
2200 }
2201 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2202 if (!root_vpbl.leaf_vpbl) {
2203 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2204 root_vpbl.pbl_pbase);
2205 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2206 vpbl.pbl_pbase);
2207 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2208 kfree(nesmr);
2209 return ERR_PTR(-ENOMEM);
2210 }
2211 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2212 root_vpbl.pbl_vbase[0].pa_high =
2213 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2214 root_vpbl.leaf_vpbl[0] = vpbl;
2215 }
2216 /* Allocate a 4K buffer for the PBL */
2217 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2218 &vpbl.pbl_pbase);
2219 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2220 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2221 if (!vpbl.pbl_vbase) {
2222 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2223 ibmr = ERR_PTR(-ENOMEM);
2224 kfree(nesmr);
2225 goto reg_phys_err;
2226 }
2227 /* Fill in the root table */
2228 if (1 <= root_pbl_index) {
2229 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2230 cpu_to_le32((u32)vpbl.pbl_pbase);
2231 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2232 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2233 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2234 }
2235 root_pbl_index++;
2236 cur_pbl_index = 0;
2237 }
2238 if (buffer_list[i].addr & ~PAGE_MASK) {
2239 /* TODO: Unwind allocated buffers */
2240 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2241 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2242 (unsigned int) buffer_list[i].addr);
2243 ibmr = ERR_PTR(-EINVAL);
2244 kfree(nesmr);
2245 goto reg_phys_err;
2246 }
2247
2248 if (!buffer_list[i].size) {
2249 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2250 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2251 ibmr = ERR_PTR(-EINVAL);
2252 kfree(nesmr);
2253 goto reg_phys_err;
2254 }
2255
2256 region_length += buffer_list[i].size;
2257 if ((i != 0) && (single_page)) {
2258 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2259 single_page = 0;
2260 }
2261 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr);
2262 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2263 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2264 }
2265
2266 stag = stag_index << 8;
2267 stag |= driver_key;
2268 stag += (u32)stag_key;
2269
2270 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2271 " length = 0x%016lX, index = 0x%08X\n",
2272 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2273
2274 region_length -= (*iova_start)&PAGE_MASK;
2275
2276 /* Make the leaf PBL the root if only one PBL */
2277 if (root_pbl_index == 1) {
2278 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2279 }
2280
2281 if (single_page) {
2282 pbl_count = 0;
2283 } else {
2284 pbl_count = root_pbl_index;
2285 }
2286 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2287 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start);
2288
2289 if (ret == 0) {
2290 nesmr->ibmr.rkey = stag;
2291 nesmr->ibmr.lkey = stag;
2292 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2293 ibmr = &nesmr->ibmr;
2294 nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
2295 nesmr->pbls_used = pbl_count;
2296 if (pbl_count > 1) {
2297 nesmr->pbls_used++;
2298 }
2299 } else {
2300 kfree(nesmr);
2301 ibmr = ERR_PTR(-ENOMEM);
2302 }
2303
2304 reg_phys_err:
2305 /* free the resources */
2306 if (root_pbl_index == 1) {
2307 /* single PBL case */
2308 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2309 } else {
2310 for (i=0; i<root_pbl_index; i++) {
2311 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2312 root_vpbl.leaf_vpbl[i].pbl_pbase);
2313 }
2314 kfree(root_vpbl.leaf_vpbl);
2315 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2316 root_vpbl.pbl_pbase);
2317 }
2318
2319 return ibmr;
2320}
2321
2322
2323/**
2324 * nes_get_dma_mr
2325 */
2326static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2327{
2328 struct ib_phys_buf bl;
2329 u64 kva = 0;
2330
2331 nes_debug(NES_DBG_MR, "\n");
2332
2333 bl.size = (u64)0xffffffffffULL;
2334 bl.addr = 0;
2335 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2336}
2337
2338
2339/**
2340 * nes_reg_user_mr
2341 */
2342static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2343 u64 virt, int acc, struct ib_udata *udata)
2344{
2345 u64 iova_start;
2346 __le64 *pbl;
2347 u64 region_length;
2348 dma_addr_t last_dma_addr = 0;
2349 dma_addr_t first_dma_addr = 0;
2350 struct nes_pd *nespd = to_nespd(pd);
2351 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2352 struct nes_device *nesdev = nesvnic->nesdev;
2353 struct nes_adapter *nesadapter = nesdev->nesadapter;
2354 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2355 struct ib_umem_chunk *chunk;
2356 struct nes_ucontext *nes_ucontext;
2357 struct nes_pbl *nespbl;
2358 struct nes_mr *nesmr;
2359 struct ib_umem *region;
2360 struct nes_mem_reg_req req;
2361 struct nes_vpbl vpbl;
2362 struct nes_root_vpbl root_vpbl;
2363 int nmap_index, page_index;
2364 int page_count = 0;
2365 int err, pbl_depth = 0;
2366 int chunk_pages;
2367 int ret;
2368 u32 stag;
2369 u32 stag_index = 0;
2370 u32 next_stag_index;
2371 u32 driver_key;
2372 u32 root_pbl_index = 0;
2373 u32 cur_pbl_index = 0;
2374 u32 skip_pages;
2375 u16 pbl_count;
2376 u8 single_page = 1;
2377 u8 stag_key;
2378
2379 region = ib_umem_get(pd->uobject->context, start, length, acc);
2380 if (IS_ERR(region)) {
2381 return (struct ib_mr *)region;
2382 }
2383
2384 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2385 " offset = %u, page size = %u.\n",
2386 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2387 region->offset, region->page_size);
2388
2389 skip_pages = ((u32)region->offset) >> 12;
2390
2391 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2392 return ERR_PTR(-EFAULT);
2393 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2394
2395 switch (req.reg_type) {
2396 case IWNES_MEMREG_TYPE_MEM:
2397 pbl_depth = 0;
2398 region_length = 0;
2399 vpbl.pbl_vbase = NULL;
2400 root_vpbl.pbl_vbase = NULL;
2401 root_vpbl.pbl_pbase = 0;
2402
2403 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2404 stag_key = (u8)next_stag_index;
2405
2406 driver_key = next_stag_index & 0x70000000;
2407
2408 next_stag_index >>= 8;
2409 next_stag_index %= nesadapter->max_mr;
2410
2411 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2412 nesadapter->max_mr, &stag_index, &next_stag_index);
2413 if (err) {
2414 ib_umem_release(region);
2415 return ERR_PTR(err);
2416 }
2417
2418 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2419 if (!nesmr) {
2420 ib_umem_release(region);
2421 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2422 return ERR_PTR(-ENOMEM);
2423 }
2424 nesmr->region = region;
2425
2426 list_for_each_entry(chunk, &region->chunk_list, list) {
2427 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2428 chunk->nents, chunk->nmap);
2429 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2430 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2431 ib_umem_release(region);
2432 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2433 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2434 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2435 ibmr = ERR_PTR(-EINVAL);
2436 kfree(nesmr);
2437 goto reg_user_mr_err;
2438 }
2439
2440 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2441 ib_umem_release(region);
2442 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2443 stag_index);
2444 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2445 ibmr = ERR_PTR(-EINVAL);
2446 kfree(nesmr);
2447 goto reg_user_mr_err;
2448 }
2449
2450 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2451 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2452 region_length -= skip_pages << 12;
2453 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2454 skip_pages = 0;
2455 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2456 goto enough_pages;
2457 if ((page_count&0x01FF) == 0) {
2458 if (page_count>(1024*512)) {
2459 ib_umem_release(region);
2460 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2461 vpbl.pbl_pbase);
2462 nes_free_resource(nesadapter,
2463 nesadapter->allocated_mrs, stag_index);
2464 kfree(nesmr);
2465 ibmr = ERR_PTR(-E2BIG);
2466 goto reg_user_mr_err;
2467 }
2468 if (root_pbl_index == 1) {
2469 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2470 8192, &root_vpbl.pbl_pbase);
2471 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2472 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2473 if (!root_vpbl.pbl_vbase) {
2474 ib_umem_release(region);
2475 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2476 vpbl.pbl_pbase);
2477 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2478 stag_index);
2479 kfree(nesmr);
2480 ibmr = ERR_PTR(-ENOMEM);
2481 goto reg_user_mr_err;
2482 }
2483 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2484 GFP_KERNEL);
2485 if (!root_vpbl.leaf_vpbl) {
2486 ib_umem_release(region);
2487 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2488 root_vpbl.pbl_pbase);
2489 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2490 vpbl.pbl_pbase);
2491 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2492 stag_index);
2493 kfree(nesmr);
2494 ibmr = ERR_PTR(-ENOMEM);
2495 goto reg_user_mr_err;
2496 }
2497 root_vpbl.pbl_vbase[0].pa_low =
2498 cpu_to_le32((u32)vpbl.pbl_pbase);
2499 root_vpbl.pbl_vbase[0].pa_high =
2500 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2501 root_vpbl.leaf_vpbl[0] = vpbl;
2502 }
2503 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2504 &vpbl.pbl_pbase);
2505 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2506 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2507 if (!vpbl.pbl_vbase) {
2508 ib_umem_release(region);
2509 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2510 ibmr = ERR_PTR(-ENOMEM);
2511 kfree(nesmr);
2512 goto reg_user_mr_err;
2513 }
2514 if (1 <= root_pbl_index) {
2515 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2516 cpu_to_le32((u32)vpbl.pbl_pbase);
2517 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2518 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2519 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2520 }
2521 root_pbl_index++;
2522 cur_pbl_index = 0;
2523 }
2524 if (single_page) {
2525 if (page_count != 0) {
2526 if ((last_dma_addr+4096) !=
2527 (sg_dma_address(&chunk->page_list[nmap_index])+
2528 (page_index*4096)))
2529 single_page = 0;
2530 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2531 (page_index*4096);
2532 } else {
2533 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2534 (page_index*4096);
2535 last_dma_addr = first_dma_addr;
2536 }
2537 }
2538
2539 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2540 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2541 (page_index*4096)));
2542 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2543 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2544 (page_index*4096))) >> 32)));
2545 cur_pbl_index++;
2546 page_count++;
2547 }
2548 }
2549 }
2550 enough_pages:
2551 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2552 " stag_key=0x%08x\n",
2553 stag_index, driver_key, stag_key);
2554 stag = stag_index << 8;
2555 stag |= driver_key;
2556 stag += (u32)stag_key;
2557 if (stag == 0) {
2558 stag = 1;
2559 }
2560
2561 iova_start = virt;
2562 /* Make the leaf PBL the root if only one PBL */
2563 if (root_pbl_index == 1) {
2564 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2565 }
2566
2567 if (single_page) {
2568 pbl_count = 0;
2569 } else {
2570 pbl_count = root_pbl_index;
2571 first_dma_addr = 0;
2572 }
2573 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2574 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2575 stag, (unsigned int)iova_start,
2576 (unsigned int)region_length, stag_index,
2577 (unsigned long long)region->length, pbl_count);
2578 ret = nes_reg_mr( nesdev, nespd, stag, region->length, &root_vpbl,
2579 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc, &iova_start);
2580
2581 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2582
2583 if (ret == 0) {
2584 nesmr->ibmr.rkey = stag;
2585 nesmr->ibmr.lkey = stag;
2586 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2587 ibmr = &nesmr->ibmr;
2588 nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
2589 nesmr->pbls_used = pbl_count;
2590 if (pbl_count > 1) {
2591 nesmr->pbls_used++;
2592 }
2593 } else {
2594 ib_umem_release(region);
2595 kfree(nesmr);
2596 ibmr = ERR_PTR(-ENOMEM);
2597 }
2598
2599 reg_user_mr_err:
2600 /* free the resources */
2601 if (root_pbl_index == 1) {
2602 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2603 vpbl.pbl_pbase);
2604 } else {
2605 for (page_index=0; page_index<root_pbl_index; page_index++) {
2606 pci_free_consistent(nesdev->pcidev, 4096,
2607 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2608 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2609 }
2610 kfree(root_vpbl.leaf_vpbl);
2611 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2612 root_vpbl.pbl_pbase);
2613 }
2614
2615 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2616
2617 return ibmr;
2618 break;
2619 case IWNES_MEMREG_TYPE_QP:
2620 case IWNES_MEMREG_TYPE_CQ:
2621 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2622 if (!nespbl) {
2623 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2624 ib_umem_release(region);
2625 return ERR_PTR(-ENOMEM);
2626 }
2627 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2628 if (!nesmr) {
2629 ib_umem_release(region);
2630 kfree(nespbl);
2631 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2632 return ERR_PTR(-ENOMEM);
2633 }
2634 nesmr->region = region;
2635 nes_ucontext = to_nesucontext(pd->uobject->context);
2636 pbl_depth = region->length >> 12;
2637 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2638 nespbl->pbl_size = pbl_depth*sizeof(u64);
2639 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2640 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2641 } else {
2642 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2643 }
2644
2645 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2646 nespbl->pbl_size, pbl_depth);
2647 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2648 &nespbl->pbl_pbase);
2649 if (!pbl) {
2650 ib_umem_release(region);
2651 kfree(nesmr);
2652 kfree(nespbl);
2653 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2654 return ERR_PTR(-ENOMEM);
2655 }
2656
2657 nespbl->pbl_vbase = (u64 *)pbl;
2658 nespbl->user_base = start;
2659 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%p,"
2660 " pbl_vbase=%p user_base=0x%lx\n",
2661 nespbl->pbl_size, (void *)nespbl->pbl_pbase,
2662 (void*)nespbl->pbl_vbase, nespbl->user_base);
2663
2664 list_for_each_entry(chunk, &region->chunk_list, list) {
2665 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2666 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2667 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2668 nespbl->page = sg_page(&chunk->page_list[0]);
2669 for (page_index=0; page_index<chunk_pages; page_index++) {
2670 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2671 (sg_dma_address(&chunk->page_list[nmap_index])+
2672 (page_index*4096)));
2673 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2674 (sg_dma_address(&chunk->page_list[nmap_index])+
2675 (page_index*4096)))>>32);
2676 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2677 (unsigned long long)*pbl,
2678 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2679 pbl++;
2680 }
2681 }
2682 }
2683 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2684 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2685 } else {
2686 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2687 }
2688 nesmr->ibmr.rkey = -1;
2689 nesmr->ibmr.lkey = -1;
2690 nesmr->mode = req.reg_type;
2691 return &nesmr->ibmr;
2692 break;
2693 }
2694
2695 return ERR_PTR(-ENOSYS);
2696}
2697
2698
2699/**
2700 * nes_dereg_mr
2701 */
2702static int nes_dereg_mr(struct ib_mr *ib_mr)
2703{
2704 struct nes_mr *nesmr = to_nesmr(ib_mr);
2705 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2706 struct nes_device *nesdev = nesvnic->nesdev;
2707 struct nes_adapter *nesadapter = nesdev->nesadapter;
2708 struct nes_hw_cqp_wqe *cqp_wqe;
2709 struct nes_cqp_request *cqp_request;
2710 unsigned long flags;
2711 int ret;
2712 u16 major_code;
2713 u16 minor_code;
2714
2715 if (nesmr->region) {
2716 ib_umem_release(nesmr->region);
2717 }
2718 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2719 kfree(nesmr);
2720 return 0;
2721 }
2722
2723 /* Deallocate the region with the adapter */
2724
2725 cqp_request = nes_get_cqp_request(nesdev);
2726 if (cqp_request == NULL) {
2727 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2728 return -ENOMEM;
2729 }
2730 cqp_request->waiting = 1;
2731 cqp_wqe = &cqp_request->cqp_wqe;
2732
2733 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2734 if (nesmr->pbls_used != 0) {
2735 if (nesmr->pbl_4k) {
2736 nesadapter->free_4kpbl += nesmr->pbls_used;
2737 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
2738 printk(KERN_ERR PFX "free 4KB PBLs(%u) has exceeded the max(%u)\n",
2739 nesadapter->free_4kpbl, nesadapter->max_4kpbl);
2740 }
2741 } else {
2742 nesadapter->free_256pbl += nesmr->pbls_used;
2743 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
2744 printk(KERN_ERR PFX "free 256B PBLs(%u) has exceeded the max(%u)\n",
2745 nesadapter->free_256pbl, nesadapter->max_256pbl);
2746 }
2747 }
2748 }
2749
2750 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2751 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2752 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2753 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2754 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2755 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2756
2757 atomic_set(&cqp_request->refcount, 2);
2758 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
2759
2760 /* Wait for CQP */
2761 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2762 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2763 NES_EVENT_TIMEOUT);
2764 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2765 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2766 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2767
2768 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2769 (ib_mr->rkey & 0x0fffff00) >> 8);
2770
2771 kfree(nesmr);
2772
2773 major_code = cqp_request->major_code;
2774 minor_code = cqp_request->minor_code;
2775 if (atomic_dec_and_test(&cqp_request->refcount)) {
2776 if (cqp_request->dynamic) {
2777 kfree(cqp_request);
2778 } else {
2779 spin_lock_irqsave(&nesdev->cqp.lock, flags);
2780 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2781 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
2782 }
2783 }
2784 if (!ret) {
2785 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2786 " ib_mr=%p, rkey = 0x%08X\n",
2787 ib_mr, ib_mr->rkey);
2788 return -ETIME;
2789 } else if (major_code) {
2790 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2791 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2792 major_code, minor_code, ib_mr, ib_mr->rkey);
2793 return -EIO;
2794 } else
2795 return 0;
2796}
2797
2798
2799/**
2800 * show_rev
2801 */
2802static ssize_t show_rev(struct class_device *cdev, char *buf)
2803{
2804 struct nes_ib_device *nesibdev =
2805 container_of(cdev, struct nes_ib_device, ibdev.class_dev);
2806 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2807
2808 nes_debug(NES_DBG_INIT, "\n");
2809 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2810}
2811
2812
2813/**
2814 * show_fw_ver
2815 */
2816static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
2817{
2818 struct nes_ib_device *nesibdev =
2819 container_of(cdev, struct nes_ib_device, ibdev.class_dev);
2820 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2821
2822 nes_debug(NES_DBG_INIT, "\n");
2823 return sprintf(buf, "%x.%x.%x\n",
2824 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 32),
2825 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 16) & 0xffff,
2826 (int)(nesvnic->nesdev->nesadapter->fw_ver & 0xffff));
2827}
2828
2829
2830/**
2831 * show_hca
2832 */
2833static ssize_t show_hca(struct class_device *cdev, char *buf)
2834{
2835 nes_debug(NES_DBG_INIT, "\n");
2836 return sprintf(buf, "NES020\n");
2837}
2838
2839
2840/**
2841 * show_board
2842 */
2843static ssize_t show_board(struct class_device *cdev, char *buf)
2844{
2845 nes_debug(NES_DBG_INIT, "\n");
2846 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2847}
2848
2849
2850static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2851static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2852static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2853static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2854
2855static struct class_device_attribute *nes_class_attributes[] = {
2856 &class_device_attr_hw_rev,
2857 &class_device_attr_fw_ver,
2858 &class_device_attr_hca_type,
2859 &class_device_attr_board_id
2860};
2861
2862
2863/**
2864 * nes_query_qp
2865 */
2866static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2867 int attr_mask, struct ib_qp_init_attr *init_attr)
2868{
2869 struct nes_qp *nesqp = to_nesqp(ibqp);
2870
2871 nes_debug(NES_DBG_QP, "\n");
2872
2873 attr->qp_access_flags = 0;
2874 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2875 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2876 attr->cap.max_recv_sge = 1;
2877 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2878 init_attr->cap.max_inline_data = 0;
2879 } else {
2880 init_attr->cap.max_inline_data = 64;
2881 }
2882
2883 init_attr->event_handler = nesqp->ibqp.event_handler;
2884 init_attr->qp_context = nesqp->ibqp.qp_context;
2885 init_attr->send_cq = nesqp->ibqp.send_cq;
2886 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2887 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2888 init_attr->cap = attr->cap;
2889
2890 return 0;
2891}
2892
2893
2894/**
2895 * nes_hw_modify_qp
2896 */
2897int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2898 u32 next_iwarp_state, u32 wait_completion)
2899{
2900 struct nes_hw_cqp_wqe *cqp_wqe;
2901 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2902 /* struct iw_cm_event cm_event; */
2903 struct nes_cqp_request *cqp_request;
2904 unsigned long flags;
2905 int ret;
2906 u16 major_code;
2907
2908 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2909 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2910
2911 cqp_request = nes_get_cqp_request(nesdev);
2912 if (cqp_request == NULL) {
2913 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2914 return -ENOMEM;
2915 }
2916 if (wait_completion) {
2917 cqp_request->waiting = 1;
2918 } else {
2919 cqp_request->waiting = 0;
2920 }
2921 cqp_wqe = &cqp_request->cqp_wqe;
2922
2923 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2924 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2925 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2926 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2927 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2928 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2929 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2930
2931 atomic_set(&cqp_request->refcount, 2);
2932 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
2933
2934 /* Wait for CQP */
2935 if (wait_completion) {
2936 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2937 nesqp->hwqp.qp_id); */
2938 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2939 NES_EVENT_TIMEOUT);
2940 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2941 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2942 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2943 major_code = cqp_request->major_code;
2944 if (major_code) {
2945 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2946 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2947 nesqp->hwqp.qp_id, cqp_request->major_code,
2948 cqp_request->minor_code, next_iwarp_state);
2949 }
2950 if (atomic_dec_and_test(&cqp_request->refcount)) {
2951 if (cqp_request->dynamic) {
2952 kfree(cqp_request);
2953 } else {
2954 spin_lock_irqsave(&nesdev->cqp.lock, flags);
2955 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2956 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
2957 }
2958 }
2959 if (!ret)
2960 return -ETIME;
2961 else if (major_code)
2962 return -EIO;
2963 else
2964 return 0;
2965 } else {
2966 return 0;
2967 }
2968}
2969
2970
2971/**
2972 * nes_modify_qp
2973 */
2974int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2975 int attr_mask, struct ib_udata *udata)
2976{
2977 struct nes_qp *nesqp = to_nesqp(ibqp);
2978 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2979 struct nes_device *nesdev = nesvnic->nesdev;
2980 /* u32 cqp_head; */
2981 /* u32 counter; */
2982 u32 next_iwarp_state = 0;
2983 int err;
2984 unsigned long qplockflags;
2985 int ret;
2986 u16 original_last_aeq;
2987 u8 issue_modify_qp = 0;
2988 u8 issue_disconnect = 0;
2989 u8 dont_wait = 0;
2990
2991 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2992 " iwarp_state=0x%X, refcount=%d\n",
2993 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2994 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2995
2996 nes_add_ref(&nesqp->ibqp);
2997 spin_lock_irqsave(&nesqp->lock, qplockflags);
2998
2999 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
3000 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
3001 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
3002 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
3003
3004 if (attr_mask & IB_QP_STATE) {
3005 switch (attr->qp_state) {
3006 case IB_QPS_INIT:
3007 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
3008 nesqp->hwqp.qp_id);
3009 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3010 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3011 nes_rem_ref(&nesqp->ibqp);
3012 return -EINVAL;
3013 }
3014 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3015 issue_modify_qp = 1;
3016 break;
3017 case IB_QPS_RTR:
3018 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
3019 nesqp->hwqp.qp_id);
3020 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3021 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3022 nes_rem_ref(&nesqp->ibqp);
3023 return -EINVAL;
3024 }
3025 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3026 issue_modify_qp = 1;
3027 break;
3028 case IB_QPS_RTS:
3029 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
3030 nesqp->hwqp.qp_id);
3031 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
3032 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3033 nes_rem_ref(&nesqp->ibqp);
3034 return -EINVAL;
3035 }
3036 if (nesqp->cm_id == NULL) {
3037 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
3038 nesqp->hwqp.qp_id );
3039 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3040 nes_rem_ref(&nesqp->ibqp);
3041 return -EINVAL;
3042 }
3043 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
3044 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
3045 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3046 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3047 issue_modify_qp = 1;
3048 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3049 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3050 nesqp->hte_added = 1;
3051 break;
3052 case IB_QPS_SQD:
3053 issue_modify_qp = 1;
3054 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3055 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3056 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3057 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3058 nes_rem_ref(&nesqp->ibqp);
3059 return 0;
3060 } else {
3061 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3062 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3063 " ignored due to current iWARP state\n",
3064 nesqp->hwqp.qp_id);
3065 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3066 nes_rem_ref(&nesqp->ibqp);
3067 return -EINVAL;
3068 }
3069 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3070 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3071 " already done based on hw state.\n",
3072 nesqp->hwqp.qp_id);
3073 issue_modify_qp = 0;
3074 nesqp->in_disconnect = 0;
3075 }
3076 switch (nesqp->hw_iwarp_state) {
3077 case NES_AEQE_IWARP_STATE_CLOSING:
3078 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3079 case NES_AEQE_IWARP_STATE_TERMINATE:
3080 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3081 break;
3082 case NES_AEQE_IWARP_STATE_ERROR:
3083 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3084 break;
3085 default:
3086 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3087 nesqp->in_disconnect = 1;
3088 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3089 break;
3090 }
3091 }
3092 break;
3093 case IB_QPS_SQE:
3094 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3095 nesqp->hwqp.qp_id);
3096 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3097 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3098 nes_rem_ref(&nesqp->ibqp);
3099 return -EINVAL;
3100 }
3101 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3102 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3103 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3104 issue_modify_qp = 1;
3105 nesqp->in_disconnect = 1;
3106 break;
3107 case IB_QPS_ERR:
3108 case IB_QPS_RESET:
3109 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3110 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3111 nes_rem_ref(&nesqp->ibqp);
3112 return -EINVAL;
3113 }
3114 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3115 nesqp->hwqp.qp_id);
3116 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3117 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3118 if (nesqp->hte_added) {
3119 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3120 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3121 nesqp->hte_added = 0;
3122 }
3123 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3124 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3125 next_iwarp_state |= NES_CQP_QP_RESET;
3126 nesqp->in_disconnect = 1;
3127 } else {
3128 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3129 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3130 dont_wait = 1;
3131 }
3132 issue_modify_qp = 1;
3133 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3134 break;
3135 default:
3136 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3137 nes_rem_ref(&nesqp->ibqp);
3138 return -EINVAL;
3139 break;
3140 }
3141
3142 nesqp->ibqp_state = attr->qp_state;
3143 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3144 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3145 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3146 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3147 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3148 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3149 nesqp->iwarp_state);
3150 issue_disconnect = 1;
3151 } else {
3152 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3153 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3154 nesqp->iwarp_state);
3155 }
3156 }
3157
3158 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3159 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3160 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3161 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3162 issue_modify_qp = 1;
3163 }
3164 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3165 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3166 issue_modify_qp = 1;
3167 }
3168 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3169 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3170 issue_modify_qp = 1;
3171 }
3172 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3173 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3174 issue_modify_qp = 1;
3175 }
3176
3177 if (nesqp->user_mode) {
3178 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3179 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3180 issue_modify_qp = 1;
3181 }
3182 }
3183
3184 original_last_aeq = nesqp->last_aeq;
3185 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3186
3187 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3188
3189 ret = 0;
3190
3191
3192 if (issue_modify_qp) {
3193 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3194 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
3195 if (ret)
3196 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3197 " failed for QP%u.\n",
3198 next_iwarp_state, nesqp->hwqp.qp_id);
3199
3200 }
3201
3202 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3203 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3204 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3205 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3206 original_last_aeq, nesqp->last_aeq);
3207 if ((!ret) ||
3208 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3209 (ret))) {
3210 if (dont_wait) {
3211 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3212 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3213 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3214 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3215 original_last_aeq, nesqp->last_aeq);
3216 /* this one is for the cm_disconnect thread */
3217 nes_add_ref(&nesqp->ibqp);
3218 spin_lock_irqsave(&nesqp->lock, qplockflags);
3219 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3220 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3221 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3222 nes_cm_disconn(nesqp);
3223 } else {
3224 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3225 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3226 nes_rem_ref(&nesqp->ibqp);
3227 }
3228 } else {
3229 spin_lock_irqsave(&nesqp->lock, qplockflags);
3230 if (nesqp->cm_id) {
3231 /* These two are for the timer thread */
3232 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3233 nes_add_ref(&nesqp->ibqp);
3234 nesqp->cm_id->add_ref(nesqp->cm_id);
3235 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3236 " need ae to finish up, original_last_aeq = 0x%04X."
3237 " last_aeq = 0x%04X, scheduling timer.\n",
3238 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3239 original_last_aeq, nesqp->last_aeq);
3240 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3241 }
3242 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3243 } else {
3244 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3245 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3246 " need ae to finish up, original_last_aeq = 0x%04X."
3247 " last_aeq = 0x%04X.\n",
3248 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3249 original_last_aeq, nesqp->last_aeq);
3250 }
3251 }
3252 } else {
3253 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3254 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3255 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3256 original_last_aeq, nesqp->last_aeq);
3257 nes_rem_ref(&nesqp->ibqp);
3258 }
3259 } else {
3260 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3261 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3262 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3263 original_last_aeq, nesqp->last_aeq);
3264 nes_rem_ref(&nesqp->ibqp);
3265 }
3266
3267 err = 0;
3268
3269 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3270 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3271
3272 return err;
3273}
3274
3275
3276/**
3277 * nes_muticast_attach
3278 */
3279static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3280{
3281 nes_debug(NES_DBG_INIT, "\n");
3282 return -ENOSYS;
3283}
3284
3285
3286/**
3287 * nes_multicast_detach
3288 */
3289static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3290{
3291 nes_debug(NES_DBG_INIT, "\n");
3292 return -ENOSYS;
3293}
3294
3295
3296/**
3297 * nes_process_mad
3298 */
3299static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3300 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3301 struct ib_mad *in_mad, struct ib_mad *out_mad)
3302{
3303 nes_debug(NES_DBG_INIT, "\n");
3304 return -ENOSYS;
3305}
3306
3307static inline void
3308fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3309{
3310 int sge_index;
3311 int total_payload_length = 0;
3312 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3313 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3314 ib_wr->sg_list[sge_index].addr);
3315 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3316 ib_wr->sg_list[sge_index].length);
3317 if (uselkey)
3318 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3319 (ib_wr->sg_list[sge_index].lkey));
3320 else
3321 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3322
3323 total_payload_length += ib_wr->sg_list[sge_index].length;
3324 }
3325 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3326 total_payload_length);
3327 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3328 total_payload_length);
3329}
3330
3331/**
3332 * nes_post_send
3333 */
3334static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3335 struct ib_send_wr **bad_wr)
3336{
3337 u64 u64temp;
3338 unsigned long flags = 0;
3339 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3340 struct nes_device *nesdev = nesvnic->nesdev;
3341 struct nes_qp *nesqp = to_nesqp(ibqp);
3342 struct nes_hw_qp_wqe *wqe;
3343 int err;
3344 u32 qsize = nesqp->hwqp.sq_size;
3345 u32 head;
3346 u32 wqe_misc;
3347 u32 wqe_count;
3348 u32 counter;
3349 u32 total_payload_length;
3350
3351 err = 0;
3352 wqe_misc = 0;
3353 wqe_count = 0;
3354 total_payload_length = 0;
3355
3356 if (nesqp->ibqp_state > IB_QPS_RTS)
3357 return -EINVAL;
3358
3359 spin_lock_irqsave(&nesqp->lock, flags);
3360
3361 head = nesqp->hwqp.sq_head;
3362
3363 while (ib_wr) {
3364 /* Check for SQ overflow */
3365 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3366 err = -EINVAL;
3367 break;
3368 }
3369
3370 wqe = &nesqp->hwqp.sq_vbase[head];
3371 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3372 nesqp->hwqp.qp_id, wqe, head); */
3373 nes_fill_init_qp_wqe(wqe, nesqp, head);
3374 u64temp = (u64)(ib_wr->wr_id);
3375 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3376 u64temp);
3377 switch (ib_wr->opcode) {
3378 case IB_WR_SEND:
3379 if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3380 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3381 } else {
3382 wqe_misc = NES_IWARP_SQ_OP_SEND;
3383 }
3384 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3385 err = -EINVAL;
3386 break;
3387 }
3388 if (ib_wr->send_flags & IB_SEND_FENCE) {
3389 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3390 }
3391 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3392 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3393 (ib_wr->sg_list[0].length <= 64)) {
3394 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3395 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3396 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3397 ib_wr->sg_list[0].length);
3398 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3399 } else {
3400 fill_wqe_sg_send(wqe, ib_wr, 1);
3401 }
3402
3403 break;
3404 case IB_WR_RDMA_WRITE:
3405 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3406 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3407 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3408 ib_wr->num_sge,
3409 nesdev->nesadapter->max_sge);
3410 err = -EINVAL;
3411 break;
3412 }
3413 if (ib_wr->send_flags & IB_SEND_FENCE) {
3414 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3415 }
3416
3417 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3418 ib_wr->wr.rdma.rkey);
3419 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3420 ib_wr->wr.rdma.remote_addr);
3421
3422 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3423 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3424 (ib_wr->sg_list[0].length <= 64)) {
3425 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3426 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3427 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3428 ib_wr->sg_list[0].length);
3429 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3430 } else {
3431 fill_wqe_sg_send(wqe, ib_wr, 1);
3432 }
3433 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3434 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3435 break;
3436 case IB_WR_RDMA_READ:
3437 /* iWARP only supports 1 sge for RDMA reads */
3438 if (ib_wr->num_sge > 1) {
3439 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3440 ib_wr->num_sge);
3441 err = -EINVAL;
3442 break;
3443 }
3444 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3445 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3446 ib_wr->wr.rdma.remote_addr);
3447 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3448 ib_wr->wr.rdma.rkey);
3449 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3450 ib_wr->sg_list->length);
3451 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3452 ib_wr->sg_list->addr);
3453 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3454 ib_wr->sg_list->lkey);
3455 break;
3456 default:
3457 /* error */
3458 err = -EINVAL;
3459 break;
3460 }
3461
3462 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3463 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3464 }
3465 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3466
3467 ib_wr = ib_wr->next;
3468 head++;
3469 wqe_count++;
3470 if (head >= qsize)
3471 head = 0;
3472
3473 }
3474
3475 nesqp->hwqp.sq_head = head;
3476 barrier();
3477 while (wqe_count) {
3478 counter = min(wqe_count, ((u32)255));
3479 wqe_count -= counter;
3480 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3481 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3482 }
3483
3484 spin_unlock_irqrestore(&nesqp->lock, flags);
3485
3486 if (err)
3487 *bad_wr = ib_wr;
3488 return err;
3489}
3490
3491
3492/**
3493 * nes_post_recv
3494 */
3495static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3496 struct ib_recv_wr **bad_wr)
3497{
3498 u64 u64temp;
3499 unsigned long flags = 0;
3500 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3501 struct nes_device *nesdev = nesvnic->nesdev;
3502 struct nes_qp *nesqp = to_nesqp(ibqp);
3503 struct nes_hw_qp_wqe *wqe;
3504 int err = 0;
3505 int sge_index;
3506 u32 qsize = nesqp->hwqp.rq_size;
3507 u32 head;
3508 u32 wqe_count = 0;
3509 u32 counter;
3510 u32 total_payload_length;
3511
3512 if (nesqp->ibqp_state > IB_QPS_RTS)
3513 return -EINVAL;
3514
3515 spin_lock_irqsave(&nesqp->lock, flags);
3516
3517 head = nesqp->hwqp.rq_head;
3518
3519 while (ib_wr) {
3520 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3521 err = -EINVAL;
3522 break;
3523 }
3524 /* Check for RQ overflow */
3525 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3526 err = -EINVAL;
3527 break;
3528 }
3529
3530 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3531 wqe = &nesqp->hwqp.rq_vbase[head];
3532
3533 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3534 nesqp->hwqp.qp_id, wqe, head); */
3535 nes_fill_init_qp_wqe(wqe, nesqp, head);
3536 u64temp = (u64)(ib_wr->wr_id);
3537 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3538 u64temp);
3539 total_payload_length = 0;
3540 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3541 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3542 ib_wr->sg_list[sge_index].addr);
3543 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3544 ib_wr->sg_list[sge_index].length);
3545 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3546 ib_wr->sg_list[sge_index].lkey);
3547
3548 total_payload_length += ib_wr->sg_list[sge_index].length;
3549 }
3550 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3551 total_payload_length);
3552
3553 ib_wr = ib_wr->next;
3554 head++;
3555 wqe_count++;
3556 if (head >= qsize)
3557 head = 0;
3558 }
3559
3560 nesqp->hwqp.rq_head = head;
3561 barrier();
3562 while (wqe_count) {
3563 counter = min(wqe_count, ((u32)255));
3564 wqe_count -= counter;
3565 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3566 }
3567
3568 spin_unlock_irqrestore(&nesqp->lock, flags);
3569
3570 if (err)
3571 *bad_wr = ib_wr;
3572 return err;
3573}
3574
3575
3576/**
3577 * nes_poll_cq
3578 */
3579static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3580{
3581 u64 u64temp;
3582 u64 wrid;
3583 /* u64 u64temp; */
3584 unsigned long flags = 0;
3585 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3586 struct nes_device *nesdev = nesvnic->nesdev;
3587 struct nes_cq *nescq = to_nescq(ibcq);
3588 struct nes_qp *nesqp;
3589 struct nes_hw_cqe cqe;
3590 u32 head;
3591 u32 wq_tail;
3592 u32 cq_size;
3593 u32 cqe_count = 0;
3594 u32 wqe_index;
3595 u32 u32temp;
3596 /* u32 counter; */
3597
3598 nes_debug(NES_DBG_CQ, "\n");
3599
3600 spin_lock_irqsave(&nescq->lock, flags);
3601
3602 head = nescq->hw_cq.cq_head;
3603 cq_size = nescq->hw_cq.cq_size;
3604
3605 while (cqe_count < num_entries) {
3606 if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3607 NES_CQE_VALID) {
3608 cqe = nescq->hw_cq.cq_vbase[head];
3609 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3610 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3611 wqe_index = u32temp &
3612 (nesdev->nesadapter->max_qp_wr - 1);
3613 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3614 /* parse CQE, get completion context from WQE (either rq or sq */
3615 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3616 ((u64)u32temp);
3617 nesqp = *((struct nes_qp **)&u64temp);
3618 memset(entry, 0, sizeof *entry);
3619 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3620 entry->status = IB_WC_SUCCESS;
3621 } else {
3622 entry->status = IB_WC_WR_FLUSH_ERR;
3623 }
3624
3625 entry->qp = &nesqp->ibqp;
3626 entry->src_qp = nesqp->hwqp.qp_id;
3627
3628 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3629 if (nesqp->skip_lsmm) {
3630 nesqp->skip_lsmm = 0;
3631 wq_tail = nesqp->hwqp.sq_tail++;
3632 }
3633
3634 /* Working on a SQ Completion*/
3635 wq_tail = wqe_index;
3636 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3637 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3638 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3639 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3640 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3641 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3642 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3643
3644 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3645 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3646 case NES_IWARP_SQ_OP_RDMAW:
3647 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3648 entry->opcode = IB_WC_RDMA_WRITE;
3649 break;
3650 case NES_IWARP_SQ_OP_RDMAR:
3651 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3652 entry->opcode = IB_WC_RDMA_READ;
3653 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3654 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3655 break;
3656 case NES_IWARP_SQ_OP_SENDINV:
3657 case NES_IWARP_SQ_OP_SENDSEINV:
3658 case NES_IWARP_SQ_OP_SEND:
3659 case NES_IWARP_SQ_OP_SENDSE:
3660 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3661 entry->opcode = IB_WC_SEND;
3662 break;
3663 }
3664 } else {
3665 /* Working on a RQ Completion*/
3666 wq_tail = wqe_index;
3667 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3668 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3669 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3670 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3671 entry->opcode = IB_WC_RECV;
3672 }
3673 entry->wr_id = wrid;
3674
3675 if (++head >= cq_size)
3676 head = 0;
3677 cqe_count++;
3678 nescq->polled_completions++;
3679 if ((nescq->polled_completions > (cq_size / 2)) ||
3680 (nescq->polled_completions == 255)) {
3681 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3682 " are pending %u of %u.\n",
3683 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3684 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3685 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3686 nescq->polled_completions = 0;
3687 }
3688 entry++;
3689 } else
3690 break;
3691 }
3692
3693 if (nescq->polled_completions) {
3694 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3695 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3696 nescq->polled_completions = 0;
3697 }
3698
3699 nescq->hw_cq.cq_head = head;
3700 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3701 cqe_count, nescq->hw_cq.cq_number);
3702
3703 spin_unlock_irqrestore(&nescq->lock, flags);
3704
3705 return cqe_count;
3706}
3707
3708
3709/**
3710 * nes_req_notify_cq
3711 */
3712static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3713 {
3714 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3715 struct nes_device *nesdev = nesvnic->nesdev;
3716 struct nes_cq *nescq = to_nescq(ibcq);
3717 u32 cq_arm;
3718
3719 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3720 nescq->hw_cq.cq_number);
3721
3722 cq_arm = nescq->hw_cq.cq_number;
3723 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3724 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3725 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3726 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3727 else
3728 return -EINVAL;
3729
3730 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3731 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3732
3733 return 0;
3734}
3735
3736
3737/**
3738 * nes_init_ofa_device
3739 */
3740struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3741{
3742 struct nes_ib_device *nesibdev;
3743 struct nes_vnic *nesvnic = netdev_priv(netdev);
3744 struct nes_device *nesdev = nesvnic->nesdev;
3745
3746 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3747 if (nesibdev == NULL) {
3748 return NULL;
3749 }
3750 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3751 nesibdev->ibdev.owner = THIS_MODULE;
3752
3753 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3754 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3755 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3756
3757 nesibdev->ibdev.uverbs_cmd_mask =
3758 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3759 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3760 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3761 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3762 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3763 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3764 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3765 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3766 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3767 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3768 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3769 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3770 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3771 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3772 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3773 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3774 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3775 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3776 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3777 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3778 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3779 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3780
3781 nesibdev->ibdev.phys_port_cnt = 1;
3782 nesibdev->ibdev.num_comp_vectors = 1;
3783 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3784 nesibdev->ibdev.class_dev.dev = &nesdev->pcidev->dev;
3785 nesibdev->ibdev.query_device = nes_query_device;
3786 nesibdev->ibdev.query_port = nes_query_port;
3787 nesibdev->ibdev.modify_port = nes_modify_port;
3788 nesibdev->ibdev.query_pkey = nes_query_pkey;
3789 nesibdev->ibdev.query_gid = nes_query_gid;
3790 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3791 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3792 nesibdev->ibdev.mmap = nes_mmap;
3793 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3794 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3795 nesibdev->ibdev.create_ah = nes_create_ah;
3796 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3797 nesibdev->ibdev.create_qp = nes_create_qp;
3798 nesibdev->ibdev.modify_qp = nes_modify_qp;
3799 nesibdev->ibdev.query_qp = nes_query_qp;
3800 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3801 nesibdev->ibdev.create_cq = nes_create_cq;
3802 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3803 nesibdev->ibdev.poll_cq = nes_poll_cq;
3804 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3805 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3806 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3807 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3808 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3809 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3810 nesibdev->ibdev.bind_mw = nes_bind_mw;
3811
3812 nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3813 nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3814 nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3815 nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3816
3817 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3818 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3819 nesibdev->ibdev.process_mad = nes_process_mad;
3820
3821 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3822 nesibdev->ibdev.post_send = nes_post_send;
3823 nesibdev->ibdev.post_recv = nes_post_recv;
3824
3825 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3826 if (nesibdev->ibdev.iwcm == NULL) {
3827 ib_dealloc_device(&nesibdev->ibdev);
3828 return NULL;
3829 }
3830 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3831 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3832 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3833 nesibdev->ibdev.iwcm->connect = nes_connect;
3834 nesibdev->ibdev.iwcm->accept = nes_accept;
3835 nesibdev->ibdev.iwcm->reject = nes_reject;
3836 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3837 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3838
3839 return nesibdev;
3840}
3841
3842
3843/**
3844 * nes_destroy_ofa_device
3845 */
3846void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3847{
3848 if (nesibdev == NULL)
3849 return;
3850
3851 nes_unregister_ofa_device(nesibdev);
3852
3853 kfree(nesibdev->ibdev.iwcm);
3854 ib_dealloc_device(&nesibdev->ibdev);
3855}
3856
3857
3858/**
3859 * nes_register_ofa_device
3860 */
3861int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3862{
3863 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3864 struct nes_device *nesdev = nesvnic->nesdev;
3865 struct nes_adapter *nesadapter = nesdev->nesadapter;
3866 int i, ret;
3867
3868 ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3869 if (ret) {
3870 return ret;
3871 }
3872
3873 /* Get the resources allocated to this device */
3874 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3875 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3876 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3877 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3878
3879 for (i = 0; i < ARRAY_SIZE(nes_class_attributes); ++i) {
3880 ret = class_device_create_file(&nesibdev->ibdev.class_dev, nes_class_attributes[i]);
3881 if (ret) {
3882 while (i > 0) {
3883 i--;
3884 class_device_remove_file(&nesibdev->ibdev.class_dev,
3885 nes_class_attributes[i]);
3886 }
3887 ib_unregister_device(&nesibdev->ibdev);
3888 return ret;
3889 }
3890 }
3891
3892 nesvnic->of_device_registered = 1;
3893
3894 return 0;
3895}
3896
3897
3898/**
3899 * nes_unregister_ofa_device
3900 */
3901void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3902{
3903 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3904 int i;
3905
3906 if (nesibdev == NULL)
3907 return;
3908
3909 for (i = 0; i < ARRAY_SIZE(nes_class_attributes); ++i) {
3910 class_device_remove_file(&nesibdev->ibdev.class_dev, nes_class_attributes[i]);
3911 }
3912
3913 if (nesvnic->of_device_registered) {
3914 ib_unregister_device(&nesibdev->ibdev);
3915 }
3916
3917 nesvnic->of_device_registered = 0;
3918}
Linux kernel - Deliverables
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