IB: expand ib_umem_get() prototype
[linux-2.6.git] / drivers / infiniband / hw / nes / nes_verbs.c
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
48 atomic_t mod_qp_timouts;
49 atomic_t qps_created;
50 atomic_t sw_qps_destroyed;
51
52 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
53
54 /**
55  * nes_alloc_mw
56  */
57 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
58         unsigned long flags;
59         struct nes_pd *nespd = to_nespd(ibpd);
60         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
61         struct nes_device *nesdev = nesvnic->nesdev;
62         struct nes_adapter *nesadapter = nesdev->nesadapter;
63         struct nes_cqp_request *cqp_request;
64         struct nes_mr *nesmr;
65         struct ib_mw *ibmw;
66         struct nes_hw_cqp_wqe *cqp_wqe;
67         int ret;
68         u32 stag;
69         u32 stag_index = 0;
70         u32 next_stag_index = 0;
71         u32 driver_key = 0;
72         u8 stag_key = 0;
73
74         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
75         stag_key = (u8)next_stag_index;
76
77         driver_key = 0;
78
79         next_stag_index >>= 8;
80         next_stag_index %= nesadapter->max_mr;
81
82         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
83                         nesadapter->max_mr, &stag_index, &next_stag_index);
84         if (ret) {
85                 return ERR_PTR(ret);
86         }
87
88         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
89         if (!nesmr) {
90                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
91                 return ERR_PTR(-ENOMEM);
92         }
93
94         stag = stag_index << 8;
95         stag |= driver_key;
96         stag += (u32)stag_key;
97
98         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
99                         stag, stag_index);
100
101         /* Register the region with the adapter */
102         cqp_request = nes_get_cqp_request(nesdev);
103         if (cqp_request == NULL) {
104                 kfree(nesmr);
105                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
106                 return ERR_PTR(-ENOMEM);
107         }
108
109         cqp_request->waiting = 1;
110         cqp_wqe = &cqp_request->cqp_wqe;
111
112         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
113                         cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
114                         NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
115                         NES_CQP_STAG_REM_ACC_EN);
116
117         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
118         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
119         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
120
121         atomic_set(&cqp_request->refcount, 2);
122         nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
123
124         /* Wait for CQP */
125         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
126                         NES_EVENT_TIMEOUT);
127         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
128                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
129                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
130         if ((!ret) || (cqp_request->major_code)) {
131                 if (atomic_dec_and_test(&cqp_request->refcount)) {
132                         if (cqp_request->dynamic) {
133                                 kfree(cqp_request);
134                         } else {
135                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
136                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
137                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
138                         }
139                 }
140                 kfree(nesmr);
141                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
142                 if (!ret) {
143                         return ERR_PTR(-ETIME);
144                 } else {
145                         return ERR_PTR(-ENOMEM);
146                 }
147         } else {
148                 if (atomic_dec_and_test(&cqp_request->refcount)) {
149                         if (cqp_request->dynamic) {
150                                 kfree(cqp_request);
151                         } else {
152                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
153                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
154                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
155                         }
156                 }
157         }
158
159         nesmr->ibmw.rkey = stag;
160         nesmr->mode = IWNES_MEMREG_TYPE_MW;
161         ibmw = &nesmr->ibmw;
162         nesmr->pbl_4k = 0;
163         nesmr->pbls_used = 0;
164
165         return ibmw;
166 }
167
168
169 /**
170  * nes_dealloc_mw
171  */
172 static int nes_dealloc_mw(struct ib_mw *ibmw)
173 {
174         struct nes_mr *nesmr = to_nesmw(ibmw);
175         struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
176         struct nes_device *nesdev = nesvnic->nesdev;
177         struct nes_adapter *nesadapter = nesdev->nesadapter;
178         struct nes_hw_cqp_wqe *cqp_wqe;
179         struct nes_cqp_request *cqp_request;
180         int err = 0;
181         unsigned long flags;
182         int ret;
183
184         /* Deallocate the window with the adapter */
185         cqp_request = nes_get_cqp_request(nesdev);
186         if (cqp_request == NULL) {
187                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
188                 return -ENOMEM;
189         }
190         cqp_request->waiting = 1;
191         cqp_wqe = &cqp_request->cqp_wqe;
192         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
193         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
194         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
195
196         atomic_set(&cqp_request->refcount, 2);
197         nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
198
199         /* Wait for CQP */
200         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
201                         ibmw->rkey);
202         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
203                         NES_EVENT_TIMEOUT);
204         nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
205                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
206                         ret, cqp_request->major_code, cqp_request->minor_code);
207         if ((!ret) || (cqp_request->major_code)) {
208                 if (atomic_dec_and_test(&cqp_request->refcount)) {
209                         if (cqp_request->dynamic) {
210                                 kfree(cqp_request);
211                         } else {
212                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
213                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
214                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
215                         }
216                 }
217                 if (!ret) {
218                         err = -ETIME;
219                 } else {
220                         err = -EIO;
221                 }
222         } else {
223                 if (atomic_dec_and_test(&cqp_request->refcount)) {
224                         if (cqp_request->dynamic) {
225                                 kfree(cqp_request);
226                         } else {
227                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
228                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
229                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
230                         }
231                 }
232         }
233
234         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
235                         (ibmw->rkey & 0x0fffff00) >> 8);
236         kfree(nesmr);
237
238         return err;
239 }
240
241
242 /**
243  * nes_bind_mw
244  */
245 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
246                 struct ib_mw_bind *ibmw_bind)
247 {
248         u64 u64temp;
249         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
250         struct nes_device *nesdev = nesvnic->nesdev;
251         /* struct nes_mr *nesmr = to_nesmw(ibmw); */
252         struct nes_qp *nesqp = to_nesqp(ibqp);
253         struct nes_hw_qp_wqe *wqe;
254         unsigned long flags = 0;
255         u32 head;
256         u32 wqe_misc = 0;
257         u32 qsize;
258
259         if (nesqp->ibqp_state > IB_QPS_RTS)
260                 return -EINVAL;
261
262                 spin_lock_irqsave(&nesqp->lock, flags);
263
264         head = nesqp->hwqp.sq_head;
265         qsize = nesqp->hwqp.sq_tail;
266
267         /* Check for SQ overflow */
268         if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
269                         spin_unlock_irqrestore(&nesqp->lock, flags);
270                 return -EINVAL;
271         }
272
273         wqe = &nesqp->hwqp.sq_vbase[head];
274         /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
275         nes_fill_init_qp_wqe(wqe, nesqp, head);
276         u64temp = ibmw_bind->wr_id;
277         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
278         wqe_misc = NES_IWARP_SQ_OP_BIND;
279
280         wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
281
282         if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
283                 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
284
285         if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
286                 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
287         }
288         if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
289                 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
290         }
291
292         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
293         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
294         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
295         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
296                         ibmw_bind->length);
297         wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
298         u64temp = (u64)ibmw_bind->addr;
299         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
300
301         head++;
302         if (head >= qsize)
303                 head = 0;
304
305         nesqp->hwqp.sq_head = head;
306         barrier();
307
308         nes_write32(nesdev->regs+NES_WQE_ALLOC,
309                         (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
310
311                 spin_unlock_irqrestore(&nesqp->lock, flags);
312
313         return 0;
314 }
315
316
317 /**
318  * nes_alloc_fmr
319  */
320 static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
321                 int ibmr_access_flags,
322                 struct ib_fmr_attr *ibfmr_attr)
323 {
324         unsigned long flags;
325         struct nes_pd *nespd = to_nespd(ibpd);
326         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
327         struct nes_device *nesdev = nesvnic->nesdev;
328         struct nes_adapter *nesadapter = nesdev->nesadapter;
329         struct nes_fmr *nesfmr;
330         struct nes_cqp_request *cqp_request;
331         struct nes_hw_cqp_wqe *cqp_wqe;
332         int ret;
333         u32 stag;
334         u32 stag_index = 0;
335         u32 next_stag_index = 0;
336         u32 driver_key = 0;
337         u32 opcode = 0;
338         u8 stag_key = 0;
339         int i=0;
340         struct nes_vpbl vpbl;
341
342         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
343         stag_key = (u8)next_stag_index;
344
345         driver_key = 0;
346
347         next_stag_index >>= 8;
348         next_stag_index %= nesadapter->max_mr;
349
350         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
351                         nesadapter->max_mr, &stag_index, &next_stag_index);
352         if (ret) {
353                 goto failed_resource_alloc;
354         }
355
356         nesfmr = kzalloc(sizeof(*nesfmr), GFP_KERNEL);
357         if (!nesfmr) {
358                 ret = -ENOMEM;
359                 goto failed_fmr_alloc;
360         }
361
362         nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR;
363         if (ibfmr_attr->max_pages == 1) {
364                 /* use zero length PBL */
365                 nesfmr->nesmr.pbl_4k = 0;
366                 nesfmr->nesmr.pbls_used = 0;
367         } else if (ibfmr_attr->max_pages <= 32) {
368                 /* use PBL 256 */
369                 nesfmr->nesmr.pbl_4k = 0;
370                 nesfmr->nesmr.pbls_used = 1;
371         } else if (ibfmr_attr->max_pages <= 512) {
372                 /* use 4K PBLs */
373                 nesfmr->nesmr.pbl_4k = 1;
374                 nesfmr->nesmr.pbls_used = 1;
375         } else {
376                 /* use two level 4K PBLs */
377                 /* add support for two level 256B PBLs */
378                 nesfmr->nesmr.pbl_4k = 1;
379                 nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages >> 9) +
380                                 ((ibfmr_attr->max_pages & 511) ? 1 : 0);
381         }
382         /* Register the region with the adapter */
383         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
384
385         /* track PBL resources */
386         if (nesfmr->nesmr.pbls_used != 0) {
387                 if (nesfmr->nesmr.pbl_4k) {
388                         if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
389                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
390                                 ret = -ENOMEM;
391                                 goto failed_vpbl_alloc;
392                         } else {
393                                 nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
394                         }
395                 } else {
396                         if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
397                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
398                                 ret = -ENOMEM;
399                                 goto failed_vpbl_alloc;
400                         } else {
401                                 nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
402                         }
403                 }
404         }
405
406         /* one level pbl */
407         if (nesfmr->nesmr.pbls_used == 0) {
408                 nesfmr->root_vpbl.pbl_vbase = NULL;
409                 nes_debug(NES_DBG_MR,  "zero level pbl \n");
410         } else if (nesfmr->nesmr.pbls_used == 1) {
411                 /* can change it to kmalloc & dma_map_single */
412                 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
413                                 &nesfmr->root_vpbl.pbl_pbase);
414                 if (!nesfmr->root_vpbl.pbl_vbase) {
415                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
416                         ret = -ENOMEM;
417                         goto failed_vpbl_alloc;
418                 }
419                 nesfmr->leaf_pbl_cnt = 0;
420                 nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n",
421                                 nesfmr->root_vpbl.pbl_vbase);
422         }
423         /* two level pbl */
424         else {
425                 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
426                                 &nesfmr->root_vpbl.pbl_pbase);
427                 if (!nesfmr->root_vpbl.pbl_vbase) {
428                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
429                         ret = -ENOMEM;
430                         goto failed_vpbl_alloc;
431                 }
432
433                 nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
434                 if (!nesfmr->root_vpbl.leaf_vpbl) {
435                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
436                         ret = -ENOMEM;
437                         goto failed_leaf_vpbl_alloc;
438                 }
439
440                 nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
441                 nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
442                                 " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
443                                 nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
444
445                 for (i=0; i<nesfmr->leaf_pbl_cnt; i++)
446                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL;
447
448                 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
449                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
450                                         &vpbl.pbl_pbase);
451
452                         if (!vpbl.pbl_vbase) {
453                                 ret = -ENOMEM;
454                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
455                                 goto failed_leaf_vpbl_pages_alloc;
456                         }
457
458                         nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
459                         nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
460                         nesfmr->root_vpbl.leaf_vpbl[i] = vpbl;
461
462                         nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n",
463                                         nesfmr->root_vpbl.pbl_vbase[i].pa_low,
464                                         nesfmr->root_vpbl.pbl_vbase[i].pa_high,
465                                         &nesfmr->root_vpbl.leaf_vpbl[i]);
466                 }
467         }
468         nesfmr->ib_qp = NULL;
469         nesfmr->access_rights =0;
470
471         stag = stag_index << 8;
472         stag |= driver_key;
473         stag += (u32)stag_key;
474
475         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
476         cqp_request = nes_get_cqp_request(nesdev);
477         if (cqp_request == NULL) {
478                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
479                 ret = -ENOMEM;
480                 goto failed_leaf_vpbl_pages_alloc;
481         }
482         cqp_request->waiting = 1;
483         cqp_wqe = &cqp_request->cqp_wqe;
484
485         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
486                         stag, stag_index);
487
488         opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
489
490         if (nesfmr->nesmr.pbl_4k == 1)
491                 opcode |= NES_CQP_STAG_PBL_BLK_SIZE;
492
493         if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) {
494                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE |
495                                 NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN;
496                 nesfmr->access_rights |=
497                                 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE |
498                                 NES_CQP_STAG_REM_ACC_EN;
499         }
500
501         if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) {
502                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ |
503                                 NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN;
504                 nesfmr->access_rights |=
505                                 NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ |
506                                 NES_CQP_STAG_REM_ACC_EN;
507         }
508
509         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
510         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
511         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
512         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
513
514         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] =
515                         cpu_to_le32((nesfmr->nesmr.pbls_used>1) ?
516                         (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used);
517
518         atomic_set(&cqp_request->refcount, 2);
519         nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
520
521         /* Wait for CQP */
522         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
523                         NES_EVENT_TIMEOUT);
524         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
525                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
526                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
527
528         if ((!ret) || (cqp_request->major_code)) {
529                 if (atomic_dec_and_test(&cqp_request->refcount)) {
530                         if (cqp_request->dynamic) {
531                                 kfree(cqp_request);
532                         } else {
533                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
534                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
535                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
536                         }
537                 }
538                 ret = (!ret) ? -ETIME : -EIO;
539                 goto failed_leaf_vpbl_pages_alloc;
540         } else {
541                 if (atomic_dec_and_test(&cqp_request->refcount)) {
542                         if (cqp_request->dynamic) {
543                                 kfree(cqp_request);
544                         } else {
545                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
546                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
547                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
548                         }
549                 }
550         }
551
552         nesfmr->nesmr.ibfmr.lkey = stag;
553         nesfmr->nesmr.ibfmr.rkey = stag;
554         nesfmr->attr = *ibfmr_attr;
555
556         return &nesfmr->nesmr.ibfmr;
557
558         failed_leaf_vpbl_pages_alloc:
559         /* unroll all allocated pages */
560         for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
561                 if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) {
562                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
563                                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
564                 }
565         }
566         if (nesfmr->root_vpbl.leaf_vpbl)
567                 kfree(nesfmr->root_vpbl.leaf_vpbl);
568
569         failed_leaf_vpbl_alloc:
570         if (nesfmr->leaf_pbl_cnt == 0) {
571                 if (nesfmr->root_vpbl.pbl_vbase)
572                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
573                                         nesfmr->root_vpbl.pbl_pbase);
574         } else
575                 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
576                                 nesfmr->root_vpbl.pbl_pbase);
577
578         failed_vpbl_alloc:
579         kfree(nesfmr);
580
581         failed_fmr_alloc:
582         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
583
584         failed_resource_alloc:
585         return ERR_PTR(ret);
586 }
587
588
589 /**
590  * nes_dealloc_fmr
591  */
592 static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
593 {
594         struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
595         struct nes_fmr *nesfmr = to_nesfmr(nesmr);
596         struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
597         struct nes_device *nesdev = nesvnic->nesdev;
598         struct nes_mr temp_nesmr = *nesmr;
599         int i = 0;
600
601         temp_nesmr.ibmw.device = ibfmr->device;
602         temp_nesmr.ibmw.pd = ibfmr->pd;
603         temp_nesmr.ibmw.rkey = ibfmr->rkey;
604         temp_nesmr.ibmw.uobject = NULL;
605
606         /* free the resources */
607         if (nesfmr->leaf_pbl_cnt == 0) {
608                 /* single PBL case */
609                 if (nesfmr->root_vpbl.pbl_vbase)
610                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
611                                         nesfmr->root_vpbl.pbl_pbase);
612         } else {
613                 for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
614                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
615                                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
616                 }
617                 kfree(nesfmr->root_vpbl.leaf_vpbl);
618                 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
619                                 nesfmr->root_vpbl.pbl_pbase);
620         }
621
622         return nes_dealloc_mw(&temp_nesmr.ibmw);
623 }
624
625
626 /**
627  * nes_map_phys_fmr
628  */
629 static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
630                 int list_len, u64 iova)
631 {
632         return 0;
633 }
634
635
636 /**
637  * nes_unmap_frm
638  */
639 static int nes_unmap_fmr(struct list_head *ibfmr_list)
640 {
641         return 0;
642 }
643
644
645
646 /**
647  * nes_query_device
648  */
649 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
650 {
651         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
652         struct nes_device *nesdev = nesvnic->nesdev;
653         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
654
655         memset(props, 0, sizeof(*props));
656         memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
657
658         props->fw_ver = nesdev->nesadapter->fw_ver;
659         props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
660         props->vendor_id = nesdev->nesadapter->vendor_id;
661         props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
662         props->hw_ver = nesdev->nesadapter->hw_rev;
663         props->max_mr_size = 0x80000000;
664         props->max_qp = nesibdev->max_qp;
665         props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
666         props->max_sge = nesdev->nesadapter->max_sge;
667         props->max_cq = nesibdev->max_cq;
668         props->max_cqe = nesdev->nesadapter->max_cqe - 1;
669         props->max_mr = nesibdev->max_mr;
670         props->max_mw = nesibdev->max_mr;
671         props->max_pd = nesibdev->max_pd;
672         props->max_sge_rd = 1;
673         switch (nesdev->nesadapter->max_irrq_wr) {
674                 case 0:
675                         props->max_qp_rd_atom = 1;
676                         break;
677                 case 1:
678                         props->max_qp_rd_atom = 4;
679                         break;
680                 case 2:
681                         props->max_qp_rd_atom = 16;
682                         break;
683                 case 3:
684                         props->max_qp_rd_atom = 32;
685                         break;
686                 default:
687                         props->max_qp_rd_atom = 0;
688         }
689         props->max_qp_init_rd_atom = props->max_qp_wr;
690         props->atomic_cap = IB_ATOMIC_NONE;
691         props->max_map_per_fmr = 1;
692
693         return 0;
694 }
695
696
697 /**
698  * nes_query_port
699  */
700 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
701 {
702         memset(props, 0, sizeof(*props));
703
704         props->max_mtu = IB_MTU_2048;
705         props->active_mtu = IB_MTU_2048;
706         props->lid = 1;
707         props->lmc = 0;
708         props->sm_lid = 0;
709         props->sm_sl = 0;
710         props->state = IB_PORT_ACTIVE;
711         props->phys_state = 0;
712         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
713                         IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
714         props->gid_tbl_len = 1;
715         props->pkey_tbl_len = 1;
716         props->qkey_viol_cntr = 0;
717         props->active_width = IB_WIDTH_4X;
718         props->active_speed = 1;
719         props->max_msg_sz = 0x80000000;
720
721         return 0;
722 }
723
724
725 /**
726  * nes_modify_port
727  */
728 static int nes_modify_port(struct ib_device *ibdev, u8 port,
729                 int port_modify_mask, struct ib_port_modify *props)
730 {
731         return 0;
732 }
733
734
735 /**
736  * nes_query_pkey
737  */
738 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
739 {
740         *pkey = 0;
741         return 0;
742 }
743
744
745 /**
746  * nes_query_gid
747  */
748 static int nes_query_gid(struct ib_device *ibdev, u8 port,
749                 int index, union ib_gid *gid)
750 {
751         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
752
753         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
754         memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
755
756         return 0;
757 }
758
759
760 /**
761  * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
762  * of all objects associated with a particular user-mode client.
763  */
764 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
765                 struct ib_udata *udata)
766 {
767         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
768         struct nes_device *nesdev = nesvnic->nesdev;
769         struct nes_adapter *nesadapter = nesdev->nesadapter;
770         struct nes_alloc_ucontext_req req;
771         struct nes_alloc_ucontext_resp uresp;
772         struct nes_ucontext *nes_ucontext;
773         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
774
775
776         if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
777                 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
778                 return ERR_PTR(-EINVAL);
779         }
780
781         if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
782                 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
783                         req.userspace_ver, NES_ABI_USERSPACE_VER);
784                 return ERR_PTR(-EINVAL);
785         }
786
787
788         memset(&uresp, 0, sizeof uresp);
789
790         uresp.max_qps = nesibdev->max_qp;
791         uresp.max_pds = nesibdev->max_pd;
792         uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
793         uresp.virtwq = nesadapter->virtwq;
794         uresp.kernel_ver = NES_ABI_KERNEL_VER;
795
796         nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
797         if (!nes_ucontext)
798                 return ERR_PTR(-ENOMEM);
799
800         nes_ucontext->nesdev = nesdev;
801         nes_ucontext->mmap_wq_offset = uresp.max_pds;
802         nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
803                         ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
804                         PAGE_SIZE;
805
806
807         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
808                 kfree(nes_ucontext);
809                 return ERR_PTR(-EFAULT);
810         }
811
812         INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
813         INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
814         atomic_set(&nes_ucontext->usecnt, 1);
815         return &nes_ucontext->ibucontext;
816 }
817
818
819 /**
820  * nes_dealloc_ucontext
821  */
822 static int nes_dealloc_ucontext(struct ib_ucontext *context)
823 {
824         /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
825         /* struct nes_device *nesdev = nesvnic->nesdev; */
826         struct nes_ucontext *nes_ucontext = to_nesucontext(context);
827
828         if (!atomic_dec_and_test(&nes_ucontext->usecnt))
829           return 0;
830         kfree(nes_ucontext);
831         return 0;
832 }
833
834
835 /**
836  * nes_mmap
837  */
838 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
839 {
840         unsigned long index;
841         struct nes_vnic *nesvnic = to_nesvnic(context->device);
842         struct nes_device *nesdev = nesvnic->nesdev;
843         /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
844         struct nes_ucontext *nes_ucontext;
845         struct nes_qp *nesqp;
846
847         nes_ucontext = to_nesucontext(context);
848
849
850         if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
851                 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
852                 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
853                                 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
854                 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
855                         nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
856                         return -EFAULT;
857                 }
858                 nesqp = nes_ucontext->mmap_nesqp[index];
859                 if (nesqp == NULL) {
860                         nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
861                         return -EFAULT;
862                 }
863                 if (remap_pfn_range(vma, vma->vm_start,
864                                 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
865                                 vma->vm_end - vma->vm_start,
866                                 vma->vm_page_prot)) {
867                         nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
868                         return -EAGAIN;
869                 }
870                 vma->vm_private_data = nesqp;
871                 return 0;
872         } else {
873                 index = vma->vm_pgoff;
874                 if (!test_bit(index, nes_ucontext->allocated_doorbells))
875                         return -EFAULT;
876
877                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
878                 if (io_remap_pfn_range(vma, vma->vm_start,
879                                 (nesdev->doorbell_start +
880                                 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
881                                 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
882                         return -EAGAIN;
883                 vma->vm_private_data = nes_ucontext;
884                 return 0;
885         }
886
887         return -ENOSYS;
888 }
889
890
891 /**
892  * nes_alloc_pd
893  */
894 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
895                 struct ib_ucontext *context, struct ib_udata *udata)
896 {
897         struct nes_pd *nespd;
898         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
899         struct nes_device *nesdev = nesvnic->nesdev;
900         struct nes_adapter *nesadapter = nesdev->nesadapter;
901         struct nes_ucontext *nesucontext;
902         struct nes_alloc_pd_resp uresp;
903         u32 pd_num = 0;
904         int err;
905
906         nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
907                         nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
908                         atomic_read(&nesvnic->netdev->refcnt));
909
910         err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
911                         nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
912         if (err) {
913                 return ERR_PTR(err);
914         }
915
916         nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
917         if (!nespd) {
918                 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
919                 return ERR_PTR(-ENOMEM);
920         }
921
922         nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
923                         nespd, nesvnic->nesibdev->ibdev.name);
924
925         nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
926
927         if (context) {
928                 nesucontext = to_nesucontext(context);
929                 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
930                                 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
931                 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
932                                 nespd->mmap_db_index, nespd->pd_id);
933                 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
934                         nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
935                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
936                         kfree(nespd);
937                         return ERR_PTR(-ENOMEM);
938                 }
939
940                 uresp.pd_id = nespd->pd_id;
941                 uresp.mmap_db_index = nespd->mmap_db_index;
942                 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
943                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
944                         kfree(nespd);
945                         return ERR_PTR(-EFAULT);
946                 }
947
948                 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
949                 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
950                 nesucontext->first_free_db = nespd->mmap_db_index + 1;
951         }
952
953         nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
954         return &nespd->ibpd;
955 }
956
957
958 /**
959  * nes_dealloc_pd
960  */
961 static int nes_dealloc_pd(struct ib_pd *ibpd)
962 {
963         struct nes_ucontext *nesucontext;
964         struct nes_pd *nespd = to_nespd(ibpd);
965         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
966         struct nes_device *nesdev = nesvnic->nesdev;
967         struct nes_adapter *nesadapter = nesdev->nesadapter;
968
969         if ((ibpd->uobject) && (ibpd->uobject->context)) {
970                 nesucontext = to_nesucontext(ibpd->uobject->context);
971                 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
972                                 nespd->mmap_db_index);
973                 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
974                 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
975                 if (nesucontext->first_free_db > nespd->mmap_db_index) {
976                         nesucontext->first_free_db = nespd->mmap_db_index;
977                 }
978         }
979
980         nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
981                         nespd->pd_id, nespd);
982         nes_free_resource(nesadapter, nesadapter->allocated_pds,
983                         (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
984         kfree(nespd);
985
986         return 0;
987 }
988
989
990 /**
991  * nes_create_ah
992  */
993 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
994 {
995         return ERR_PTR(-ENOSYS);
996 }
997
998
999 /**
1000  * nes_destroy_ah
1001  */
1002 static int nes_destroy_ah(struct ib_ah *ah)
1003 {
1004         return -ENOSYS;
1005 }
1006
1007
1008 /**
1009  * nes_get_encoded_size
1010  */
1011 static inline u8 nes_get_encoded_size(int *size)
1012 {
1013         u8 encoded_size = 0;
1014         if (*size <= 32) {
1015                 *size = 32;
1016                 encoded_size = 1;
1017         } else if (*size <= 128) {
1018                 *size = 128;
1019                 encoded_size = 2;
1020         } else if (*size <= 512) {
1021                 *size = 512;
1022                 encoded_size = 3;
1023         }
1024         return (encoded_size);
1025 }
1026
1027
1028
1029 /**
1030  * nes_setup_virt_qp
1031  */
1032 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
1033                 struct nes_vnic *nesvnic, int sq_size, int rq_size)
1034 {
1035         unsigned long flags;
1036         void *mem;
1037         __le64 *pbl = NULL;
1038         __le64 *tpbl;
1039         __le64 *pblbuffer;
1040         struct nes_device *nesdev = nesvnic->nesdev;
1041         struct nes_adapter *nesadapter = nesdev->nesadapter;
1042         u32 pbl_entries;
1043         u8 rq_pbl_entries;
1044         u8 sq_pbl_entries;
1045
1046         pbl_entries = nespbl->pbl_size >> 3;
1047         nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
1048                         nespbl->pbl_size, pbl_entries,
1049                         (void *)nespbl->pbl_vbase,
1050                         (unsigned long) nespbl->pbl_pbase);
1051         pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
1052         /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
1053         /* the first pbl to be fro the rq_vbase... */
1054         rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1055         sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1056         nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1057         if (!nespbl->page) {
1058                 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1059                 kfree(nespbl);
1060                 return -ENOMEM;
1061         }
1062
1063         nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1064         nesqp->page = nespbl->page;
1065         if (!nesqp->hwqp.sq_vbase) {
1066                 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1067                 kfree(nespbl);
1068                 return -ENOMEM;
1069         }
1070
1071         /* Now to get to sq.. we need to calculate how many */
1072         /* PBL entries were used by the rq.. */
1073         pbl += sq_pbl_entries;
1074         nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1075         /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1076         /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1077
1078         nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1079                   nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1080                   nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
1081         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1082         if (!nesadapter->free_256pbl) {
1083                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1084                                 nespbl->pbl_pbase);
1085                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1086                 kunmap(nesqp->page);
1087                 kfree(nespbl);
1088                 return -ENOMEM;
1089         }
1090         nesadapter->free_256pbl--;
1091         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1092
1093         nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1094         pblbuffer = nesqp->pbl_vbase;
1095         if (!nesqp->pbl_vbase) {
1096                 /* memory allocated during nes_reg_user_mr() */
1097                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1098                                     nespbl->pbl_pbase);
1099                 kfree(nespbl);
1100                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1101                 nesadapter->free_256pbl++;
1102                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1103                 kunmap(nesqp->page);
1104                 return -ENOMEM;
1105         }
1106         memset(nesqp->pbl_vbase, 0, 256);
1107         /* fill in the page address in the pbl buffer.. */
1108         tpbl = pblbuffer + 16;
1109         pbl = (__le64 *)nespbl->pbl_vbase;
1110         while (sq_pbl_entries--)
1111                 *tpbl++ = *pbl++;
1112         tpbl = pblbuffer;
1113         while (rq_pbl_entries--)
1114                 *tpbl++ = *pbl++;
1115
1116         /* done with memory allocated during nes_reg_user_mr() */
1117         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1118                             nespbl->pbl_pbase);
1119         kfree(nespbl);
1120
1121         nesqp->qp_mem_size =
1122                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256;     /* this is Q2 */
1123         /* Round up to a multiple of a page */
1124         nesqp->qp_mem_size += PAGE_SIZE - 1;
1125         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1126
1127         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1128                         &nesqp->hwqp.q2_pbase);
1129
1130         if (!mem) {
1131                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1132                 nesqp->pbl_vbase = NULL;
1133                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1134                 nesadapter->free_256pbl++;
1135                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1136                 kunmap(nesqp->page);
1137                 return -ENOMEM;
1138         }
1139         nesqp->hwqp.q2_vbase = mem;
1140         mem += 256;
1141         memset(nesqp->hwqp.q2_vbase, 0, 256);
1142         nesqp->nesqp_context = mem;
1143         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1144         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1145
1146         return 0;
1147 }
1148
1149
1150 /**
1151  * nes_setup_mmap_qp
1152  */
1153 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1154                 int sq_size, int rq_size)
1155 {
1156         void *mem;
1157         struct nes_device *nesdev = nesvnic->nesdev;
1158
1159         nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1160                         (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1161                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1162                         256; /* this is Q2 */
1163         /* Round up to a multiple of a page */
1164         nesqp->qp_mem_size += PAGE_SIZE - 1;
1165         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1166
1167         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1168                         &nesqp->hwqp.sq_pbase);
1169         if (!mem)
1170                 return -ENOMEM;
1171         nes_debug(NES_DBG_QP, "PCI consistent memory for "
1172                         "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1173                         mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1174
1175         memset(mem, 0, nesqp->qp_mem_size);
1176
1177         nesqp->hwqp.sq_vbase = mem;
1178         mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1179
1180         nesqp->hwqp.rq_vbase = mem;
1181         nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1182                         sizeof(struct nes_hw_qp_wqe) * sq_size;
1183         mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1184
1185         nesqp->hwqp.q2_vbase = mem;
1186         nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1187                         sizeof(struct nes_hw_qp_wqe) * rq_size;
1188         mem += 256;
1189         memset(nesqp->hwqp.q2_vbase, 0, 256);
1190
1191         nesqp->nesqp_context = mem;
1192         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1193         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1194         return 0;
1195 }
1196
1197
1198 /**
1199  * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1200  */
1201 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1202                 struct nes_qp *nesqp, int virt_wqs)
1203 {
1204         unsigned long flags;
1205         struct nes_adapter *nesadapter = nesdev->nesadapter;
1206         if (!virt_wqs) {
1207                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1208                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1209         }else {
1210                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1211                 nesadapter->free_256pbl++;
1212                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1213                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1214                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1215                 nesqp->pbl_vbase = NULL;
1216                 kunmap(nesqp->page);
1217         }
1218 }
1219
1220
1221 /**
1222  * nes_create_qp
1223  */
1224 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1225                 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1226 {
1227         u64 u64temp= 0;
1228         u64 u64nesqp = 0;
1229         struct nes_pd *nespd = to_nespd(ibpd);
1230         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1231         struct nes_device *nesdev = nesvnic->nesdev;
1232         struct nes_adapter *nesadapter = nesdev->nesadapter;
1233         struct nes_qp *nesqp;
1234         struct nes_cq *nescq;
1235         struct nes_ucontext *nes_ucontext;
1236         struct nes_hw_cqp_wqe *cqp_wqe;
1237         struct nes_cqp_request *cqp_request;
1238         struct nes_create_qp_req req;
1239         struct nes_create_qp_resp uresp;
1240         struct nes_pbl  *nespbl = NULL;
1241         u32 qp_num = 0;
1242         u32 opcode = 0;
1243         /* u32 counter = 0; */
1244         void *mem;
1245         unsigned long flags;
1246         int ret;
1247         int err;
1248         int virt_wqs = 0;
1249         int sq_size;
1250         int rq_size;
1251         u8 sq_encoded_size;
1252         u8 rq_encoded_size;
1253         /* int counter; */
1254
1255         if (init_attr->create_flags)
1256                 return ERR_PTR(-EINVAL);
1257
1258         atomic_inc(&qps_created);
1259         switch (init_attr->qp_type) {
1260                 case IB_QPT_RC:
1261                         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1262                                 init_attr->cap.max_inline_data = 0;
1263                         } else {
1264                                 init_attr->cap.max_inline_data = 64;
1265                         }
1266                         sq_size = init_attr->cap.max_send_wr;
1267                         rq_size = init_attr->cap.max_recv_wr;
1268
1269                         // check if the encoded sizes are OK or not...
1270                         sq_encoded_size = nes_get_encoded_size(&sq_size);
1271                         rq_encoded_size = nes_get_encoded_size(&rq_size);
1272
1273                         if ((!sq_encoded_size) || (!rq_encoded_size)) {
1274                                 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1275                                                 rq_size, sq_size);
1276                                 return ERR_PTR(-EINVAL);
1277                         }
1278
1279                         init_attr->cap.max_send_wr = sq_size -2;
1280                         init_attr->cap.max_recv_wr = rq_size -1;
1281                         nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1282
1283                         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1284                                         nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1285                         if (ret) {
1286                                 return ERR_PTR(ret);
1287                         }
1288
1289                         /* Need 512 (actually now 1024) byte alignment on this structure */
1290                         mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1291                         if (!mem) {
1292                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1293                                 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1294                                 return ERR_PTR(-ENOMEM);
1295                         }
1296                         u64nesqp = (unsigned long)mem;
1297                         u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1298                         u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1299                         u64nesqp &= ~u64temp;
1300                         nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1301                         /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p.  Rounded to closest %u\n",
1302                                         nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1303                         nesqp->allocated_buffer = mem;
1304
1305                         if (udata) {
1306                                 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1307                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1308                                         kfree(nesqp->allocated_buffer);
1309                                         nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1310                                         return NULL;
1311                                 }
1312                                 if (req.user_wqe_buffers) {
1313                                         virt_wqs = 1;
1314                                 }
1315                                 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1316                                         nesqp->user_mode = 1;
1317                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1318                                         if (virt_wqs) {
1319                                                 err = 1;
1320                                                 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1321                                                         if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1322                                                                 list_del(&nespbl->list);
1323                                                                 err = 0;
1324                                                                 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1325                                                                           nespbl, nespbl->user_base);
1326                                                                 break;
1327                                                         }
1328                                                 }
1329                                                 if (err) {
1330                                                         nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1331                                                                   (long long unsigned int)req.user_wqe_buffers);
1332                                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1333                                                         kfree(nesqp->allocated_buffer);
1334                                                         return ERR_PTR(-EFAULT);
1335                                                 }
1336                                         }
1337
1338                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1339                                         nesqp->mmap_sq_db_index =
1340                                                 find_next_zero_bit(nes_ucontext->allocated_wqs,
1341                                                                    NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1342                                         /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1343                                                         nespd->mmap_db_index); */
1344                                         if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1345                                                 nes_debug(NES_DBG_QP,
1346                                                           "db index > max user regions, failing create QP\n");
1347                                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1348                                                 if (virt_wqs) {
1349                                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1350                                                                             nespbl->pbl_pbase);
1351                                                         kfree(nespbl);
1352                                                 }
1353                                                 kfree(nesqp->allocated_buffer);
1354                                                 return ERR_PTR(-ENOMEM);
1355                                         }
1356                                         set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1357                                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1358                                         nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1359                                 } else {
1360                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1361                                         kfree(nesqp->allocated_buffer);
1362                                         return ERR_PTR(-EFAULT);
1363                                 }
1364                         }
1365                         err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1366                                         nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1367                         if (err) {
1368                                 nes_debug(NES_DBG_QP,
1369                                           "error geting qp mem code = %d\n", err);
1370                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1371                                 kfree(nesqp->allocated_buffer);
1372                                 return ERR_PTR(-ENOMEM);
1373                         }
1374
1375                         nesqp->hwqp.sq_size = sq_size;
1376                         nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1377                         nesqp->hwqp.sq_head = 1;
1378                         nesqp->hwqp.rq_size = rq_size;
1379                         nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1380                         /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1381                                         (void *)nesqp->nesqp_context_pbase);
1382                         */
1383                         nesqp->hwqp.qp_id = qp_num;
1384                         nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1385                         nesqp->nespd = nespd;
1386
1387                         nescq = to_nescq(init_attr->send_cq);
1388                         nesqp->nesscq = nescq;
1389                         nescq = to_nescq(init_attr->recv_cq);
1390                         nesqp->nesrcq = nescq;
1391
1392                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1393                                         NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1394                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1395                                         NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1396                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1397                                         NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1398                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1399                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1400                         nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1401                                         ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1402                         u64temp = (u64)nesqp->hwqp.sq_pbase;
1403                         nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1404                         nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1405
1406
1407                         if (!virt_wqs) {
1408                                 u64temp = (u64)nesqp->hwqp.sq_pbase;
1409                                 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1410                                 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1411                                 u64temp = (u64)nesqp->hwqp.rq_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                         } else {
1415                                 u64temp = (u64)nesqp->pbl_pbase;
1416                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1417                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1418                         }
1419
1420                         /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1421                                         nesvnic->next_qp_nic_index,
1422                                         nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1423                         spin_lock_irqsave(&nesdev->cqp.lock, flags);
1424                         nesqp->nesqp_context->misc2 |= cpu_to_le32(
1425                                         (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1426                                         NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1427                         nesvnic->next_qp_nic_index++;
1428                         if ((nesvnic->next_qp_nic_index > 3) ||
1429                                         (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1430                                 nesvnic->next_qp_nic_index = 0;
1431                         }
1432                         spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1433
1434                         nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1435                         u64temp = (u64)nesqp->hwqp.q2_pbase;
1436                         nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1437                         nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1438                         nesqp->nesqp_context->aeq_token_low =  cpu_to_le32((u32)((unsigned long)(nesqp)));
1439                         nesqp->nesqp_context->aeq_token_high =  cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1440                         nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1441                                         ((((u32)nesadapter->max_irrq_wr) <<
1442                                         NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1443                         if (disable_mpa_crc) {
1444                                 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1445                                 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1446                         }
1447
1448
1449                         /* Create the QP */
1450                         cqp_request = nes_get_cqp_request(nesdev);
1451                         if (cqp_request == NULL) {
1452                                 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1453                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1454                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1455                                 kfree(nesqp->allocated_buffer);
1456                                 return ERR_PTR(-ENOMEM);
1457                         }
1458                         cqp_request->waiting = 1;
1459                         cqp_wqe = &cqp_request->cqp_wqe;
1460
1461                         if (!virt_wqs) {
1462                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1463                                         NES_CQP_QP_IWARP_STATE_IDLE;
1464                         } else {
1465                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1466                                         NES_CQP_QP_IWARP_STATE_IDLE;
1467                         }
1468                         opcode |= NES_CQP_QP_CQS_VALID;
1469                         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1470                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1471                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1472
1473                         u64temp = (u64)nesqp->nesqp_context_pbase;
1474                         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1475
1476                         atomic_set(&cqp_request->refcount, 2);
1477                         nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
1478
1479                         /* Wait for CQP */
1480                         nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1481                                         nesqp->hwqp.qp_id);
1482                         ret = wait_event_timeout(cqp_request->waitq,
1483                                         (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1484                         nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1485                                         " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1486                                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1487                                         nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1488                                         cqp_request->major_code, cqp_request->minor_code);
1489                         if ((!ret) || (cqp_request->major_code)) {
1490                                 if (atomic_dec_and_test(&cqp_request->refcount)) {
1491                                         if (cqp_request->dynamic) {
1492                                                 kfree(cqp_request);
1493                                         } else {
1494                                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1495                                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1496                                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1497                                         }
1498                                 }
1499                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1500                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1501                                 kfree(nesqp->allocated_buffer);
1502                                 if (!ret) {
1503                                         return ERR_PTR(-ETIME);
1504                                 } else {
1505                                         return ERR_PTR(-EIO);
1506                                 }
1507                         } else {
1508                                 if (atomic_dec_and_test(&cqp_request->refcount)) {
1509                                         if (cqp_request->dynamic) {
1510                                                 kfree(cqp_request);
1511                                         } else {
1512                                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1513                                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1514                                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1515                                         }
1516                                 }
1517                         }
1518
1519                         if (ibpd->uobject) {
1520                                 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1521                                 uresp.actual_sq_size = sq_size;
1522                                 uresp.actual_rq_size = rq_size;
1523                                 uresp.qp_id = nesqp->hwqp.qp_id;
1524                                 uresp.nes_drv_opt = nes_drv_opt;
1525                                 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1526                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1527                                         nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1528                                         kfree(nesqp->allocated_buffer);
1529                                         return ERR_PTR(-EFAULT);
1530                                 }
1531                         }
1532
1533                         nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1534                                         nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1535                         spin_lock_init(&nesqp->lock);
1536                         init_waitqueue_head(&nesqp->state_waitq);
1537                         init_waitqueue_head(&nesqp->kick_waitq);
1538                         nes_add_ref(&nesqp->ibqp);
1539                         break;
1540                 default:
1541                         nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1542                         return ERR_PTR(-EINVAL);
1543                         break;
1544         }
1545
1546         /* update the QP table */
1547         nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1548         nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1549                         atomic_read(&nesvnic->netdev->refcnt));
1550
1551         return &nesqp->ibqp;
1552 }
1553
1554
1555 /**
1556  * nes_destroy_qp
1557  */
1558 static int nes_destroy_qp(struct ib_qp *ibqp)
1559 {
1560         struct nes_qp *nesqp = to_nesqp(ibqp);
1561         /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
1562         struct nes_ucontext *nes_ucontext;
1563         struct ib_qp_attr attr;
1564         struct iw_cm_id *cm_id;
1565         struct iw_cm_event cm_event;
1566         int ret;
1567
1568         atomic_inc(&sw_qps_destroyed);
1569         nesqp->destroyed = 1;
1570
1571         /* Blow away the connection if it exists. */
1572         if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1573                 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1574                 attr.qp_state = IB_QPS_ERR;
1575                 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1576         }
1577
1578         if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1579                         (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1580                 cm_id = nesqp->cm_id;
1581                 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1582                 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1583                 cm_event.local_addr = cm_id->local_addr;
1584                 cm_event.remote_addr = cm_id->remote_addr;
1585                 cm_event.private_data = NULL;
1586                 cm_event.private_data_len = 0;
1587
1588                 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1589                                 "QP%u. cm_id = %p, refcount = %u. \n",
1590                                 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1591
1592                 cm_id->rem_ref(cm_id);
1593                 ret = cm_id->event_handler(cm_id, &cm_event);
1594                 if (ret)
1595                         nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1596         }
1597
1598
1599         if (nesqp->user_mode) {
1600                 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1601                         nes_ucontext = to_nesucontext(ibqp->uobject->context);
1602                         clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1603                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1604                         if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1605                                 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1606                         }
1607                 }
1608                 if (nesqp->pbl_pbase)
1609                         kunmap(nesqp->page);
1610         }
1611
1612         nes_rem_ref(&nesqp->ibqp);
1613         return 0;
1614 }
1615
1616
1617 /**
1618  * nes_create_cq
1619  */
1620 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1621                 int comp_vector,
1622                 struct ib_ucontext *context, struct ib_udata *udata)
1623 {
1624         u64 u64temp;
1625         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1626         struct nes_device *nesdev = nesvnic->nesdev;
1627         struct nes_adapter *nesadapter = nesdev->nesadapter;
1628         struct nes_cq *nescq;
1629         struct nes_ucontext *nes_ucontext = NULL;
1630         struct nes_cqp_request *cqp_request;
1631         void *mem = NULL;
1632         struct nes_hw_cqp_wqe *cqp_wqe;
1633         struct nes_pbl *nespbl = NULL;
1634         struct nes_create_cq_req req;
1635         struct nes_create_cq_resp resp;
1636         u32 cq_num = 0;
1637         u32 opcode = 0;
1638         u32 pbl_entries = 1;
1639         int err;
1640         unsigned long flags;
1641         int ret;
1642
1643         err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1644                         nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1645         if (err) {
1646                 return ERR_PTR(err);
1647         }
1648
1649         nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1650         if (!nescq) {
1651                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1652                 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1653                 return ERR_PTR(-ENOMEM);
1654         }
1655
1656         nescq->hw_cq.cq_size = max(entries + 1, 5);
1657         nescq->hw_cq.cq_number = cq_num;
1658         nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1659
1660
1661         if (context) {
1662                 nes_ucontext = to_nesucontext(context);
1663                 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1664                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1665                         kfree(nescq);
1666                         return ERR_PTR(-EFAULT);
1667                 }
1668                 nesvnic->mcrq_ucontext = nes_ucontext;
1669                 nes_ucontext->mcrqf = req.mcrqf;
1670                 if (nes_ucontext->mcrqf) {
1671                         if (nes_ucontext->mcrqf & 0x80000000)
1672                                 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 12 + (nes_ucontext->mcrqf & 0xf) - 1;
1673                         else if (nes_ucontext->mcrqf & 0x40000000)
1674                                 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1675                         else
1676                                 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1677                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1678                 }
1679                 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1680                                 (unsigned long)req.user_cq_buffer, entries);
1681                 err = 1;
1682                 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1683                         if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1684                                 list_del(&nespbl->list);
1685                                 err = 0;
1686                                 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1687                                                 nespbl);
1688                                 break;
1689                         }
1690                 }
1691                 if (err) {
1692                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1693                         kfree(nescq);
1694                         return ERR_PTR(-EFAULT);
1695                 }
1696
1697                 pbl_entries = nespbl->pbl_size >> 3;
1698                 nescq->cq_mem_size = 0;
1699         } else {
1700                 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1701                 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1702                                 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1703
1704                 /* allocate the physical buffer space */
1705                 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1706                                 &nescq->hw_cq.cq_pbase);
1707                 if (!mem) {
1708                         printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1709                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1710                         kfree(nescq);
1711                         return ERR_PTR(-ENOMEM);
1712                 }
1713
1714                 memset(mem, 0, nescq->cq_mem_size);
1715                 nescq->hw_cq.cq_vbase = mem;
1716                 nescq->hw_cq.cq_head = 0;
1717                 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1718                                 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1719                                 (u32)nescq->hw_cq.cq_pbase);
1720         }
1721
1722         nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1723         spin_lock_init(&nescq->lock);
1724
1725         /* send CreateCQ request to CQP */
1726         cqp_request = nes_get_cqp_request(nesdev);
1727         if (cqp_request == NULL) {
1728                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1729                 if (!context)
1730                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1731                                         nescq->hw_cq.cq_pbase);
1732                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1733                 kfree(nescq);
1734                 return ERR_PTR(-ENOMEM);
1735         }
1736         cqp_request->waiting = 1;
1737         cqp_wqe = &cqp_request->cqp_wqe;
1738
1739         opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1740                         NES_CQP_CQ_CHK_OVERFLOW |
1741                         NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1742
1743         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1744
1745         if (pbl_entries != 1) {
1746                 if (pbl_entries > 32) {
1747                         /* use 4k pbl */
1748                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1749                         if (nesadapter->free_4kpbl == 0) {
1750                                 if (cqp_request->dynamic) {
1751                                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1752                                         kfree(cqp_request);
1753                                 } else {
1754                                         list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1755                                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1756                                 }
1757                                 if (!context)
1758                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1759                                                         nescq->hw_cq.cq_pbase);
1760                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1761                                 kfree(nescq);
1762                                 return ERR_PTR(-ENOMEM);
1763                         } else {
1764                                 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1765                                 nescq->virtual_cq = 2;
1766                                 nesadapter->free_4kpbl--;
1767                         }
1768                 } else {
1769                         /* use 256 byte pbl */
1770                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1771                         if (nesadapter->free_256pbl == 0) {
1772                                 if (cqp_request->dynamic) {
1773                                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1774                                         kfree(cqp_request);
1775                                 } else {
1776                                         list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1777                                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1778                                 }
1779                                 if (!context)
1780                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1781                                                         nescq->hw_cq.cq_pbase);
1782                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1783                                 kfree(nescq);
1784                                 return ERR_PTR(-ENOMEM);
1785                         } else {
1786                                 opcode |= NES_CQP_CQ_VIRT;
1787                                 nescq->virtual_cq = 1;
1788                                 nesadapter->free_256pbl--;
1789                         }
1790                 }
1791         }
1792
1793         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1794
1795         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1796         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1797         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1798                         (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1799
1800         if (context) {
1801                 if (pbl_entries != 1)
1802                         u64temp = (u64)nespbl->pbl_pbase;
1803                 else
1804                         u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1805                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1806                                 nes_ucontext->mmap_db_index[0]);
1807         } else {
1808                 u64temp = (u64)nescq->hw_cq.cq_pbase;
1809                 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1810         }
1811         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1812         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1813         u64temp = (u64)(unsigned long)&nescq->hw_cq;
1814         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1815                         cpu_to_le32((u32)(u64temp >> 1));
1816         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1817                         cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1818
1819         atomic_set(&cqp_request->refcount, 2);
1820         nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
1821
1822         /* Wait for CQP */
1823         nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1824                         nescq->hw_cq.cq_number);
1825         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1826                         NES_EVENT_TIMEOUT * 2);
1827         nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1828                         nescq->hw_cq.cq_number, ret);
1829         if ((!ret) || (cqp_request->major_code)) {
1830                 if (atomic_dec_and_test(&cqp_request->refcount)) {
1831                         if (cqp_request->dynamic) {
1832                                 kfree(cqp_request);
1833                         } else {
1834                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1835                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1836                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1837                         }
1838                 }
1839                 if (!context)
1840                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1841                                         nescq->hw_cq.cq_pbase);
1842                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1843                 kfree(nescq);
1844                 return ERR_PTR(-EIO);
1845         } else {
1846                 if (atomic_dec_and_test(&cqp_request->refcount)) {
1847                         if (cqp_request->dynamic) {
1848                                 kfree(cqp_request);
1849                         } else {
1850                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1851                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1852                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1853                         }
1854                 }
1855         }
1856
1857         if (context) {
1858                 /* free the nespbl */
1859                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1860                                 nespbl->pbl_pbase);
1861                 kfree(nespbl);
1862                 resp.cq_id = nescq->hw_cq.cq_number;
1863                 resp.cq_size = nescq->hw_cq.cq_size;
1864                 resp.mmap_db_index = 0;
1865                 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1866                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1867                         kfree(nescq);
1868                         return ERR_PTR(-EFAULT);
1869                 }
1870         }
1871
1872         return &nescq->ibcq;
1873 }
1874
1875
1876 /**
1877  * nes_destroy_cq
1878  */
1879 static int nes_destroy_cq(struct ib_cq *ib_cq)
1880 {
1881         struct nes_cq *nescq;
1882         struct nes_device *nesdev;
1883         struct nes_vnic *nesvnic;
1884         struct nes_adapter *nesadapter;
1885         struct nes_hw_cqp_wqe *cqp_wqe;
1886         struct nes_cqp_request *cqp_request;
1887         unsigned long flags;
1888         u32 opcode = 0;
1889         int ret;
1890
1891         if (ib_cq == NULL)
1892                 return 0;
1893
1894         nescq = to_nescq(ib_cq);
1895         nesvnic = to_nesvnic(ib_cq->device);
1896         nesdev = nesvnic->nesdev;
1897         nesadapter = nesdev->nesadapter;
1898
1899         nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1900
1901         /* Send DestroyCQ request to CQP */
1902         cqp_request = nes_get_cqp_request(nesdev);
1903         if (cqp_request == NULL) {
1904                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1905                 return -ENOMEM;
1906         }
1907         cqp_request->waiting = 1;
1908         cqp_wqe = &cqp_request->cqp_wqe;
1909         opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1910         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1911         if (nescq->virtual_cq == 1) {
1912                 nesadapter->free_256pbl++;
1913                 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1914                         printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1915                                         __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1916                 }
1917         } else if (nescq->virtual_cq == 2) {
1918                 nesadapter->free_4kpbl++;
1919                 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1920                         printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1921                                         __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1922                 }
1923                 opcode |= NES_CQP_CQ_4KB_CHUNK;
1924         }
1925
1926         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1927
1928         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1929         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1930         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1931                 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1932         nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1933         atomic_set(&cqp_request->refcount, 2);
1934         nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
1935
1936         /* Wait for CQP */
1937         nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1938                         nescq->hw_cq.cq_number);
1939         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1940                         NES_EVENT_TIMEOUT);
1941         nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1942                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1943                         nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1944                         cqp_request->minor_code);
1945         if ((!ret) || (cqp_request->major_code)) {
1946                 if (atomic_dec_and_test(&cqp_request->refcount)) {
1947                         if (cqp_request->dynamic) {
1948                                 kfree(cqp_request);
1949                         } else {
1950                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1951                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1952                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1953                         }
1954                 }
1955                 if (!ret) {
1956                         nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1957                                         nescq->hw_cq.cq_number);
1958                         ret = -ETIME;
1959                 } else {
1960                         nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1961                                         nescq->hw_cq.cq_number);
1962                         ret = -EIO;
1963                 }
1964         } else {
1965                 ret = 0;
1966                 if (atomic_dec_and_test(&cqp_request->refcount)) {
1967                         if (cqp_request->dynamic) {
1968                                 kfree(cqp_request);
1969                         } else {
1970                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1971                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1972                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1973                         }
1974                 }
1975         }
1976
1977         if (nescq->cq_mem_size)
1978                 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1979                                     nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1980         kfree(nescq);
1981
1982         return ret;
1983 }
1984
1985
1986 /**
1987  * nes_reg_mr
1988  */
1989 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1990                 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1991                 dma_addr_t single_buffer, u16 pbl_count, u16 residual_page_count,
1992                 int acc, u64 *iova_start)
1993 {
1994         struct nes_hw_cqp_wqe *cqp_wqe;
1995         struct nes_cqp_request *cqp_request;
1996         unsigned long flags;
1997         int ret;
1998         struct nes_adapter *nesadapter = nesdev->nesadapter;
1999         /* int count; */
2000         u32 opcode = 0;
2001         u16 major_code;
2002
2003         /* Register the region with the adapter */
2004         cqp_request = nes_get_cqp_request(nesdev);
2005         if (cqp_request == NULL) {
2006                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2007                 return -ENOMEM;
2008         }
2009         cqp_request->waiting = 1;
2010         cqp_wqe = &cqp_request->cqp_wqe;
2011
2012         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2013         /* track PBL resources */
2014         if (pbl_count != 0) {
2015                 if (pbl_count > 1) {
2016                         /* Two level PBL */
2017                         if ((pbl_count+1) > nesadapter->free_4kpbl) {
2018                                 nes_debug(NES_DBG_MR, "Out of 4KB Pbls for two level request.\n");
2019                                 if (cqp_request->dynamic) {
2020                                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2021                                         kfree(cqp_request);
2022                                 } else {
2023                                         list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2024                                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2025                                 }
2026                                 return -ENOMEM;
2027                         } else {
2028                                 nesadapter->free_4kpbl -= pbl_count+1;
2029                         }
2030                 } else if (residual_page_count > 32) {
2031                         if (pbl_count > nesadapter->free_4kpbl) {
2032                                 nes_debug(NES_DBG_MR, "Out of 4KB Pbls.\n");
2033                                 if (cqp_request->dynamic) {
2034                                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2035                                         kfree(cqp_request);
2036                                 } else {
2037                                         list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2038                                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2039                                 }
2040                                 return -ENOMEM;
2041                         } else {
2042                                 nesadapter->free_4kpbl -= pbl_count;
2043                         }
2044                 } else {
2045                         if (pbl_count > nesadapter->free_256pbl) {
2046                                 nes_debug(NES_DBG_MR, "Out of 256B Pbls.\n");
2047                                 if (cqp_request->dynamic) {
2048                                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2049                                         kfree(cqp_request);
2050                                 } else {
2051                                         list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2052                                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2053                                 }
2054                                 return -ENOMEM;
2055                         } else {
2056                                 nesadapter->free_256pbl -= pbl_count;
2057                         }
2058                 }
2059         }
2060
2061         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2062
2063         opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2064                                         NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2065         if (acc & IB_ACCESS_LOCAL_WRITE)
2066                 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2067         if (acc & IB_ACCESS_REMOTE_WRITE)
2068                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2069         if (acc & IB_ACCESS_REMOTE_READ)
2070                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2071         if (acc & IB_ACCESS_MW_BIND)
2072                 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2073
2074         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2075         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2076         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2077         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2078
2079         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2080                         cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2081         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2082                         cpu_to_le32(nespd->pd_id & 0x00007fff);
2083         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2084
2085         if (pbl_count == 0) {
2086                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2087         } else {
2088                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2089                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2090                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX,
2091                                 (((pbl_count - 1) * 4096) + (residual_page_count*8)));
2092
2093                 if ((pbl_count > 1) || (residual_page_count > 32))
2094                         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2095         }
2096         barrier();
2097
2098         atomic_set(&cqp_request->refcount, 2);
2099         nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
2100
2101         /* Wait for CQP */
2102         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2103                         NES_EVENT_TIMEOUT);
2104         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2105                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2106                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
2107         major_code = cqp_request->major_code;
2108         if (atomic_dec_and_test(&cqp_request->refcount)) {
2109                 if (cqp_request->dynamic) {
2110                         kfree(cqp_request);
2111                 } else {
2112                         spin_lock_irqsave(&nesdev->cqp.lock, flags);
2113                         list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2114                         spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
2115                 }
2116         }
2117         if (!ret)
2118                 return -ETIME;
2119         else if (major_code)
2120                 return -EIO;
2121         else
2122                 return 0;
2123
2124         return 0;
2125 }
2126
2127
2128 /**
2129  * nes_reg_phys_mr
2130  */
2131 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2132                 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2133                 u64 * iova_start)
2134 {
2135         u64 region_length;
2136         struct nes_pd *nespd = to_nespd(ib_pd);
2137         struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2138         struct nes_device *nesdev = nesvnic->nesdev;
2139         struct nes_adapter *nesadapter = nesdev->nesadapter;
2140         struct nes_mr *nesmr;
2141         struct ib_mr *ibmr;
2142         struct nes_vpbl vpbl;
2143         struct nes_root_vpbl root_vpbl;
2144         u32 stag;
2145         u32 i;
2146         u32 stag_index = 0;
2147         u32 next_stag_index = 0;
2148         u32 driver_key = 0;
2149         u32 root_pbl_index = 0;
2150         u32 cur_pbl_index = 0;
2151         int err = 0, pbl_depth = 0;
2152         int ret = 0;
2153         u16 pbl_count = 0;
2154         u8 single_page = 1;
2155         u8 stag_key = 0;
2156
2157         pbl_depth = 0;
2158         region_length = 0;
2159         vpbl.pbl_vbase = NULL;
2160         root_vpbl.pbl_vbase = NULL;
2161         root_vpbl.pbl_pbase = 0;
2162
2163         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2164         stag_key = (u8)next_stag_index;
2165
2166         driver_key = 0;
2167
2168         next_stag_index >>= 8;
2169         next_stag_index %= nesadapter->max_mr;
2170         if (num_phys_buf > (1024*512)) {
2171                 return ERR_PTR(-E2BIG);
2172         }
2173
2174         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2175                         &stag_index, &next_stag_index);
2176         if (err) {
2177                 return ERR_PTR(err);
2178         }
2179
2180         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2181         if (!nesmr) {
2182                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2183                 return ERR_PTR(-ENOMEM);
2184         }
2185
2186         for (i = 0; i < num_phys_buf; i++) {
2187
2188                 if ((i & 0x01FF) == 0) {
2189                         if (root_pbl_index == 1) {
2190                                 /* Allocate the root PBL */
2191                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2192                                                 &root_vpbl.pbl_pbase);
2193                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2194                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2195                                 if (!root_vpbl.pbl_vbase) {
2196                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2197                                                         vpbl.pbl_pbase);
2198                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2199                                         kfree(nesmr);
2200                                         return ERR_PTR(-ENOMEM);
2201                                 }
2202                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2203                                 if (!root_vpbl.leaf_vpbl) {
2204                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2205                                                         root_vpbl.pbl_pbase);
2206                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2207                                                         vpbl.pbl_pbase);
2208                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2209                                         kfree(nesmr);
2210                                         return ERR_PTR(-ENOMEM);
2211                                 }
2212                                 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2213                                 root_vpbl.pbl_vbase[0].pa_high =
2214                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2215                                 root_vpbl.leaf_vpbl[0] = vpbl;
2216                         }
2217                         /* Allocate a 4K buffer for the PBL */
2218                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2219                                         &vpbl.pbl_pbase);
2220                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2221                                         vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2222                         if (!vpbl.pbl_vbase) {
2223                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2224                                 ibmr = ERR_PTR(-ENOMEM);
2225                                 kfree(nesmr);
2226                                 goto reg_phys_err;
2227                         }
2228                         /* Fill in the root table */
2229                         if (1 <= root_pbl_index) {
2230                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2231                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2232                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2233                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2234                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2235                         }
2236                         root_pbl_index++;
2237                         cur_pbl_index = 0;
2238                 }
2239                 if (buffer_list[i].addr & ~PAGE_MASK) {
2240                         /* TODO: Unwind allocated buffers */
2241                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2242                         nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2243                                         (unsigned int) buffer_list[i].addr);
2244                         ibmr = ERR_PTR(-EINVAL);
2245                         kfree(nesmr);
2246                         goto reg_phys_err;
2247                 }
2248
2249                 if (!buffer_list[i].size) {
2250                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2251                         nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2252                         ibmr = ERR_PTR(-EINVAL);
2253                         kfree(nesmr);
2254                         goto reg_phys_err;
2255                 }
2256
2257                 region_length += buffer_list[i].size;
2258                 if ((i != 0) && (single_page)) {
2259                         if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2260                                 single_page = 0;
2261                 }
2262                 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr);
2263                 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2264                                 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2265         }
2266
2267         stag = stag_index << 8;
2268         stag |= driver_key;
2269         stag += (u32)stag_key;
2270
2271         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2272                         " length = 0x%016lX, index = 0x%08X\n",
2273                         stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2274
2275         region_length -= (*iova_start)&PAGE_MASK;
2276
2277         /* Make the leaf PBL the root if only one PBL */
2278         if (root_pbl_index == 1) {
2279                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2280         }
2281
2282         if (single_page) {
2283                 pbl_count = 0;
2284         } else {
2285                 pbl_count = root_pbl_index;
2286         }
2287         ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2288                         buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start);
2289
2290         if (ret == 0) {
2291                 nesmr->ibmr.rkey = stag;
2292                 nesmr->ibmr.lkey = stag;
2293                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2294                 ibmr = &nesmr->ibmr;
2295                 nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
2296                 nesmr->pbls_used = pbl_count;
2297                 if (pbl_count > 1) {
2298                         nesmr->pbls_used++;
2299                 }
2300         } else {
2301                 kfree(nesmr);
2302                 ibmr = ERR_PTR(-ENOMEM);
2303         }
2304
2305         reg_phys_err:
2306         /* free the resources */
2307         if (root_pbl_index == 1) {
2308                 /* single PBL case */
2309                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2310         } else {
2311                 for (i=0; i<root_pbl_index; i++) {
2312                         pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2313                                         root_vpbl.leaf_vpbl[i].pbl_pbase);
2314                 }
2315                 kfree(root_vpbl.leaf_vpbl);
2316                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2317                                 root_vpbl.pbl_pbase);
2318         }
2319
2320         return ibmr;
2321 }
2322
2323
2324 /**
2325  * nes_get_dma_mr
2326  */
2327 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2328 {
2329         struct ib_phys_buf bl;
2330         u64 kva = 0;
2331
2332         nes_debug(NES_DBG_MR, "\n");
2333
2334         bl.size = (u64)0xffffffffffULL;
2335         bl.addr = 0;
2336         return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2337 }
2338
2339
2340 /**
2341  * nes_reg_user_mr
2342  */
2343 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2344                 u64 virt, int acc, struct ib_udata *udata)
2345 {
2346         u64 iova_start;
2347         __le64 *pbl;
2348         u64 region_length;
2349         dma_addr_t last_dma_addr = 0;
2350         dma_addr_t first_dma_addr = 0;
2351         struct nes_pd *nespd = to_nespd(pd);
2352         struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2353         struct nes_device *nesdev = nesvnic->nesdev;
2354         struct nes_adapter *nesadapter = nesdev->nesadapter;
2355         struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2356         struct ib_umem_chunk *chunk;
2357         struct nes_ucontext *nes_ucontext;
2358         struct nes_pbl *nespbl;
2359         struct nes_mr *nesmr;
2360         struct ib_umem *region;
2361         struct nes_mem_reg_req req;
2362         struct nes_vpbl vpbl;
2363         struct nes_root_vpbl root_vpbl;
2364         int nmap_index, page_index;
2365         int page_count = 0;
2366         int err, pbl_depth = 0;
2367         int chunk_pages;
2368         int ret;
2369         u32 stag;
2370         u32 stag_index = 0;
2371         u32 next_stag_index;
2372         u32 driver_key;
2373         u32 root_pbl_index = 0;
2374         u32 cur_pbl_index = 0;
2375         u32 skip_pages;
2376         u16 pbl_count;
2377         u8 single_page = 1;
2378         u8 stag_key;
2379
2380         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2381         if (IS_ERR(region)) {
2382                 return (struct ib_mr *)region;
2383         }
2384
2385         nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2386                         " offset = %u, page size = %u.\n",
2387                         (unsigned long int)start, (unsigned long int)virt, (u32)length,
2388                         region->offset, region->page_size);
2389
2390         skip_pages = ((u32)region->offset) >> 12;
2391
2392         if (ib_copy_from_udata(&req, udata, sizeof(req)))
2393                 return ERR_PTR(-EFAULT);
2394         nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2395
2396         switch (req.reg_type) {
2397                 case IWNES_MEMREG_TYPE_MEM:
2398                         pbl_depth = 0;
2399                         region_length = 0;
2400                         vpbl.pbl_vbase = NULL;
2401                         root_vpbl.pbl_vbase = NULL;
2402                         root_vpbl.pbl_pbase = 0;
2403
2404                         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2405                         stag_key = (u8)next_stag_index;
2406
2407                         driver_key = next_stag_index & 0x70000000;
2408
2409                         next_stag_index >>= 8;
2410                         next_stag_index %= nesadapter->max_mr;
2411
2412                         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2413                                         nesadapter->max_mr, &stag_index, &next_stag_index);
2414                         if (err) {
2415                                 ib_umem_release(region);
2416                                 return ERR_PTR(err);
2417                         }
2418
2419                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2420                         if (!nesmr) {
2421                                 ib_umem_release(region);
2422                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2423                                 return ERR_PTR(-ENOMEM);
2424                         }
2425                         nesmr->region = region;
2426
2427                         list_for_each_entry(chunk, &region->chunk_list, list) {
2428                                 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2429                                                 chunk->nents, chunk->nmap);
2430                                 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2431                                         if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2432                                                 ib_umem_release(region);
2433                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2434                                                 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2435                                                                 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2436                                                 ibmr = ERR_PTR(-EINVAL);
2437                                                 kfree(nesmr);
2438                                                 goto reg_user_mr_err;
2439                                         }
2440
2441                                         if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2442                                                 ib_umem_release(region);
2443                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2444                                                                 stag_index);
2445                                                 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2446                                                 ibmr = ERR_PTR(-EINVAL);
2447                                                 kfree(nesmr);
2448                                                 goto reg_user_mr_err;
2449                                         }
2450
2451                                         region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2452                                         chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2453                                         region_length -= skip_pages << 12;
2454                                         for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2455                                                 skip_pages = 0;
2456                                                 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2457                                                         goto enough_pages;
2458                                                 if ((page_count&0x01FF) == 0) {
2459                                                         if (page_count>(1024*512)) {
2460                                                                 ib_umem_release(region);
2461                                                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2462                                                                                 vpbl.pbl_pbase);
2463                                                                 nes_free_resource(nesadapter,
2464                                                                                 nesadapter->allocated_mrs, stag_index);
2465                                                                 kfree(nesmr);
2466                                                                 ibmr = ERR_PTR(-E2BIG);
2467                                                                 goto reg_user_mr_err;
2468                                                         }
2469                                                         if (root_pbl_index == 1) {
2470                                                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2471                                                                                 8192, &root_vpbl.pbl_pbase);
2472                                                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2473                                                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2474                                                                 if (!root_vpbl.pbl_vbase) {
2475                                                                         ib_umem_release(region);
2476                                                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2477                                                                                         vpbl.pbl_pbase);
2478                                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2479                                                                                         stag_index);
2480                                                                         kfree(nesmr);
2481                                                                         ibmr = ERR_PTR(-ENOMEM);
2482                                                                         goto reg_user_mr_err;
2483                                                                 }
2484                                                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2485                                                                                 GFP_KERNEL);
2486                                                                 if (!root_vpbl.leaf_vpbl) {
2487                                                                         ib_umem_release(region);
2488                                                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2489                                                                                         root_vpbl.pbl_pbase);
2490                                                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2491                                                                                         vpbl.pbl_pbase);
2492                                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2493                                                                                         stag_index);
2494                                                                         kfree(nesmr);
2495                                                                         ibmr = ERR_PTR(-ENOMEM);
2496                                                                         goto reg_user_mr_err;
2497                                                                 }
2498                                                                 root_vpbl.pbl_vbase[0].pa_low =
2499                                                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2500                                                                 root_vpbl.pbl_vbase[0].pa_high =
2501                                                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2502                                                                 root_vpbl.leaf_vpbl[0] = vpbl;
2503                                                         }
2504                                                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2505                                                                         &vpbl.pbl_pbase);
2506                                                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2507                                                                         vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2508                                                         if (!vpbl.pbl_vbase) {
2509                                                                 ib_umem_release(region);
2510                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2511                                                                 ibmr = ERR_PTR(-ENOMEM);
2512                                                                 kfree(nesmr);
2513                                                                 goto reg_user_mr_err;
2514                                                         }
2515                                                         if (1 <= root_pbl_index) {
2516                                                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2517                                                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2518                                                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2519                                                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2520                                                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2521                                                         }
2522                                                         root_pbl_index++;
2523                                                         cur_pbl_index = 0;
2524                                                 }
2525                                                 if (single_page) {
2526                                                         if (page_count != 0) {
2527                                                                 if ((last_dma_addr+4096) !=
2528                                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2529                                                                                 (page_index*4096)))
2530                                                                         single_page = 0;
2531                                                                 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2532                                                                                 (page_index*4096);
2533                                                         } else {
2534                                                                 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2535                                                                                 (page_index*4096);
2536                                                                 last_dma_addr = first_dma_addr;
2537                                                         }
2538                                                 }
2539
2540                                                 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2541                                                                 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2542                                                                 (page_index*4096)));
2543                                                 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2544                                                                 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2545                                                                 (page_index*4096))) >> 32)));
2546                                                 cur_pbl_index++;
2547                                                 page_count++;
2548                                         }
2549                                 }
2550                         }
2551                         enough_pages:
2552                         nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2553                                         " stag_key=0x%08x\n",
2554                                         stag_index, driver_key, stag_key);
2555                         stag = stag_index << 8;
2556                         stag |= driver_key;
2557                         stag += (u32)stag_key;
2558                         if (stag == 0) {
2559                                 stag = 1;
2560                         }
2561
2562                         iova_start = virt;
2563                         /* Make the leaf PBL the root if only one PBL */
2564                         if (root_pbl_index == 1) {
2565                                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2566                         }
2567
2568                         if (single_page) {
2569                                 pbl_count = 0;
2570                         } else {
2571                                 pbl_count = root_pbl_index;
2572                                 first_dma_addr = 0;
2573                         }
2574                         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2575                                         " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2576                                         stag, (unsigned int)iova_start,
2577                                         (unsigned int)region_length, stag_index,
2578                                         (unsigned long long)region->length, pbl_count);
2579                         ret = nes_reg_mr( nesdev, nespd, stag, region->length, &root_vpbl,
2580                                         first_dma_addr, pbl_count, (u16)cur_pbl_index, acc, &iova_start);
2581
2582                         nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2583
2584                         if (ret == 0) {
2585                                 nesmr->ibmr.rkey = stag;
2586                                 nesmr->ibmr.lkey = stag;
2587                                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2588                                 ibmr = &nesmr->ibmr;
2589                                 nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
2590                                 nesmr->pbls_used = pbl_count;
2591                                 if (pbl_count > 1) {
2592                                         nesmr->pbls_used++;
2593                                 }
2594                         } else {
2595                                 ib_umem_release(region);
2596                                 kfree(nesmr);
2597                                 ibmr = ERR_PTR(-ENOMEM);
2598                         }
2599
2600                         reg_user_mr_err:
2601                         /* free the resources */
2602                         if (root_pbl_index == 1) {
2603                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2604                                                 vpbl.pbl_pbase);
2605                         } else {
2606                                 for (page_index=0; page_index<root_pbl_index; page_index++) {
2607                                         pci_free_consistent(nesdev->pcidev, 4096,
2608                                                         root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2609                                                         root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2610                                 }
2611                                 kfree(root_vpbl.leaf_vpbl);
2612                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2613                                                 root_vpbl.pbl_pbase);
2614                         }
2615
2616                         nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2617
2618                         return ibmr;
2619                         break;
2620                 case IWNES_MEMREG_TYPE_QP:
2621                 case IWNES_MEMREG_TYPE_CQ:
2622                         nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2623                         if (!nespbl) {
2624                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2625                                 ib_umem_release(region);
2626                                 return ERR_PTR(-ENOMEM);
2627                         }
2628                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2629                         if (!nesmr) {
2630                                 ib_umem_release(region);
2631                                 kfree(nespbl);
2632                                 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2633                                 return ERR_PTR(-ENOMEM);
2634                         }
2635                         nesmr->region = region;
2636                         nes_ucontext = to_nesucontext(pd->uobject->context);
2637                         pbl_depth = region->length >> 12;
2638                         pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2639                         nespbl->pbl_size = pbl_depth*sizeof(u64);
2640                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2641                                 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2642                         } else {
2643                                 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2644                         }
2645
2646                         nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2647                                         nespbl->pbl_size, pbl_depth);
2648                         pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2649                                         &nespbl->pbl_pbase);
2650                         if (!pbl) {
2651                                 ib_umem_release(region);
2652                                 kfree(nesmr);
2653                                 kfree(nespbl);
2654                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2655                                 return ERR_PTR(-ENOMEM);
2656                         }
2657
2658                         nespbl->pbl_vbase = (u64 *)pbl;
2659                         nespbl->user_base = start;
2660                         nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2661                                         " pbl_vbase=%p user_base=0x%lx\n",
2662                                   nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2663                                   (void *) nespbl->pbl_vbase, nespbl->user_base);
2664
2665                         list_for_each_entry(chunk, &region->chunk_list, list) {
2666                                 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2667                                         chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2668                                         chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2669                                         nespbl->page = sg_page(&chunk->page_list[0]);
2670                                         for (page_index=0; page_index<chunk_pages; page_index++) {
2671                                                 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2672                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2673                                                                 (page_index*4096)));
2674                                                 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2675                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2676                                                                 (page_index*4096)))>>32);
2677                                                 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2678                                                                 (unsigned long long)*pbl,
2679                                                                 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2680                                                 pbl++;
2681                                         }
2682                                 }
2683                         }
2684                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2685                                 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2686                         } else {
2687                                 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2688                         }
2689                         nesmr->ibmr.rkey = -1;
2690                         nesmr->ibmr.lkey = -1;
2691                         nesmr->mode = req.reg_type;
2692                         return &nesmr->ibmr;
2693                         break;
2694         }
2695
2696         return ERR_PTR(-ENOSYS);
2697 }
2698
2699
2700 /**
2701  * nes_dereg_mr
2702  */
2703 static int nes_dereg_mr(struct ib_mr *ib_mr)
2704 {
2705         struct nes_mr *nesmr = to_nesmr(ib_mr);
2706         struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2707         struct nes_device *nesdev = nesvnic->nesdev;
2708         struct nes_adapter *nesadapter = nesdev->nesadapter;
2709         struct nes_hw_cqp_wqe *cqp_wqe;
2710         struct nes_cqp_request *cqp_request;
2711         unsigned long flags;
2712         int ret;
2713         u16 major_code;
2714         u16 minor_code;
2715
2716         if (nesmr->region) {
2717                 ib_umem_release(nesmr->region);
2718         }
2719         if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2720                 kfree(nesmr);
2721                 return 0;
2722         }
2723
2724         /* Deallocate the region with the adapter */
2725
2726         cqp_request = nes_get_cqp_request(nesdev);
2727         if (cqp_request == NULL) {
2728                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2729                 return -ENOMEM;
2730         }
2731         cqp_request->waiting = 1;
2732         cqp_wqe = &cqp_request->cqp_wqe;
2733
2734         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2735         if (nesmr->pbls_used != 0) {
2736                 if (nesmr->pbl_4k) {
2737                         nesadapter->free_4kpbl += nesmr->pbls_used;
2738                         if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
2739                                 printk(KERN_ERR PFX "free 4KB PBLs(%u) has exceeded the max(%u)\n",
2740                                                 nesadapter->free_4kpbl, nesadapter->max_4kpbl);
2741                         }
2742                 } else {
2743                         nesadapter->free_256pbl += nesmr->pbls_used;
2744                         if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
2745                                 printk(KERN_ERR PFX "free 256B PBLs(%u) has exceeded the max(%u)\n",
2746                                                 nesadapter->free_256pbl, nesadapter->max_256pbl);
2747                         }
2748                 }
2749         }
2750
2751         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2752         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2753         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2754                         NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2755                         NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2756         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2757
2758         atomic_set(&cqp_request->refcount, 2);
2759         nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
2760
2761         /* Wait for CQP */
2762         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2763         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2764                         NES_EVENT_TIMEOUT);
2765         nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2766                         " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2767                         ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2768
2769         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2770                         (ib_mr->rkey & 0x0fffff00) >> 8);
2771
2772         kfree(nesmr);
2773
2774         major_code = cqp_request->major_code;
2775         minor_code = cqp_request->minor_code;
2776         if (atomic_dec_and_test(&cqp_request->refcount)) {
2777                 if (cqp_request->dynamic) {
2778                         kfree(cqp_request);
2779                 } else {
2780                         spin_lock_irqsave(&nesdev->cqp.lock, flags);
2781                         list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2782                         spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
2783                 }
2784         }
2785         if (!ret) {
2786                 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2787                                 " ib_mr=%p, rkey = 0x%08X\n",
2788                                 ib_mr, ib_mr->rkey);
2789                 return -ETIME;
2790         } else if (major_code) {
2791                 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2792                                 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2793                                 major_code, minor_code, ib_mr, ib_mr->rkey);
2794                 return -EIO;
2795         } else
2796                 return 0;
2797 }
2798
2799
2800 /**
2801  * show_rev
2802  */
2803 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2804                         char *buf)
2805 {
2806         struct nes_ib_device *nesibdev =
2807                         container_of(dev, struct nes_ib_device, ibdev.dev);
2808         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2809
2810         nes_debug(NES_DBG_INIT, "\n");
2811         return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2812 }
2813
2814
2815 /**
2816  * show_fw_ver
2817  */
2818 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2819                            char *buf)
2820 {
2821         struct nes_ib_device *nesibdev =
2822                         container_of(dev, struct nes_ib_device, ibdev.dev);
2823         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2824
2825         nes_debug(NES_DBG_INIT, "\n");
2826         return sprintf(buf, "%x.%x.%x\n",
2827                         (int)(nesvnic->nesdev->nesadapter->fw_ver >> 32),
2828                         (int)(nesvnic->nesdev->nesadapter->fw_ver >> 16) & 0xffff,
2829                         (int)(nesvnic->nesdev->nesadapter->fw_ver & 0xffff));
2830 }
2831
2832
2833 /**
2834  * show_hca
2835  */
2836 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2837                         char *buf)
2838 {
2839         nes_debug(NES_DBG_INIT, "\n");
2840         return sprintf(buf, "NES020\n");
2841 }
2842
2843
2844 /**
2845  * show_board
2846  */
2847 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2848                           char *buf)
2849 {
2850         nes_debug(NES_DBG_INIT, "\n");
2851         return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2852 }
2853
2854
2855 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2856 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2857 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2858 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2859
2860 static struct device_attribute *nes_dev_attributes[] = {
2861         &dev_attr_hw_rev,
2862         &dev_attr_fw_ver,
2863         &dev_attr_hca_type,
2864         &dev_attr_board_id
2865 };
2866
2867
2868 /**
2869  * nes_query_qp
2870  */
2871 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2872                 int attr_mask, struct ib_qp_init_attr *init_attr)
2873 {
2874         struct nes_qp *nesqp = to_nesqp(ibqp);
2875
2876         nes_debug(NES_DBG_QP, "\n");
2877
2878         attr->qp_access_flags = 0;
2879         attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2880         attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2881         attr->cap.max_recv_sge = 1;
2882         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2883                 init_attr->cap.max_inline_data = 0;
2884         } else {
2885                 init_attr->cap.max_inline_data = 64;
2886         }
2887
2888         init_attr->event_handler = nesqp->ibqp.event_handler;
2889         init_attr->qp_context = nesqp->ibqp.qp_context;
2890         init_attr->send_cq = nesqp->ibqp.send_cq;
2891         init_attr->recv_cq = nesqp->ibqp.recv_cq;
2892         init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2893         init_attr->cap = attr->cap;
2894
2895         return 0;
2896 }
2897
2898
2899 /**
2900  * nes_hw_modify_qp
2901  */
2902 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2903                 u32 next_iwarp_state, u32 wait_completion)
2904 {
2905         struct nes_hw_cqp_wqe *cqp_wqe;
2906         /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2907         /* struct iw_cm_event cm_event; */
2908         struct nes_cqp_request *cqp_request;
2909         unsigned long flags;
2910         int ret;
2911         u16 major_code;
2912
2913         nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2914                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2915
2916         cqp_request = nes_get_cqp_request(nesdev);
2917         if (cqp_request == NULL) {
2918                 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2919                 return -ENOMEM;
2920         }
2921         if (wait_completion) {
2922                 cqp_request->waiting = 1;
2923         } else {
2924                 cqp_request->waiting = 0;
2925         }
2926         cqp_wqe = &cqp_request->cqp_wqe;
2927
2928         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2929                         NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2930         nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2931                         next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2932         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2933         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2934         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2935
2936         atomic_set(&cqp_request->refcount, 2);
2937         nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
2938
2939         /* Wait for CQP */
2940         if (wait_completion) {
2941                 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2942                                 nesqp->hwqp.qp_id); */
2943                 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2944                                 NES_EVENT_TIMEOUT);
2945                 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2946                                 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2947                                 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2948                 major_code = cqp_request->major_code;
2949                 if (major_code) {
2950                         nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2951                                         "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2952                                         nesqp->hwqp.qp_id, cqp_request->major_code,
2953                                         cqp_request->minor_code, next_iwarp_state);
2954                 }
2955                 if (atomic_dec_and_test(&cqp_request->refcount)) {
2956                         if (cqp_request->dynamic) {
2957                                 kfree(cqp_request);
2958                         } else {
2959                                 spin_lock_irqsave(&nesdev->cqp.lock, flags);
2960                                 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2961                                 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
2962                         }
2963                 }
2964                 if (!ret)
2965                         return -ETIME;
2966                 else if (major_code)
2967                         return -EIO;
2968                 else
2969                         return 0;
2970         } else {
2971                 return 0;
2972         }
2973 }
2974
2975
2976 /**
2977  * nes_modify_qp
2978  */
2979 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2980                 int attr_mask, struct ib_udata *udata)
2981 {
2982         struct nes_qp *nesqp = to_nesqp(ibqp);
2983         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2984         struct nes_device *nesdev = nesvnic->nesdev;
2985         /* u32 cqp_head; */
2986         /* u32 counter; */
2987         u32 next_iwarp_state = 0;
2988         int err;
2989         unsigned long qplockflags;
2990         int ret;
2991         u16 original_last_aeq;
2992         u8 issue_modify_qp = 0;
2993         u8 issue_disconnect = 0;
2994         u8 dont_wait = 0;
2995
2996         nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2997                         " iwarp_state=0x%X, refcount=%d\n",
2998                         nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2999                         nesqp->iwarp_state, atomic_read(&nesqp->refcount));
3000
3001         nes_add_ref(&nesqp->ibqp);
3002         spin_lock_irqsave(&nesqp->lock, qplockflags);
3003
3004         nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
3005                         " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
3006                         nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
3007                         nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
3008
3009         if (attr_mask & IB_QP_STATE) {
3010                 switch (attr->qp_state) {
3011                         case IB_QPS_INIT:
3012                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
3013                                                 nesqp->hwqp.qp_id);
3014                                 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3015                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3016                                         nes_rem_ref(&nesqp->ibqp);
3017                                         return -EINVAL;
3018                                 }
3019                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3020                                 issue_modify_qp = 1;
3021                                 break;
3022                         case IB_QPS_RTR:
3023                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
3024                                                 nesqp->hwqp.qp_id);
3025                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3026                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3027                                         nes_rem_ref(&nesqp->ibqp);
3028                                         return -EINVAL;
3029                                 }
3030                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3031                                 issue_modify_qp = 1;
3032                                 break;
3033                         case IB_QPS_RTS:
3034                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
3035                                                 nesqp->hwqp.qp_id);
3036                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
3037                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3038                                         nes_rem_ref(&nesqp->ibqp);
3039                                         return -EINVAL;
3040                                 }
3041                                 if (nesqp->cm_id == NULL) {
3042                                         nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
3043                                                         nesqp->hwqp.qp_id );
3044                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3045                                         nes_rem_ref(&nesqp->ibqp);
3046                                         return -EINVAL;
3047                                 }
3048                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
3049                                 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
3050                                         next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3051                                                         NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3052                                 issue_modify_qp = 1;
3053                                 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3054                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3055                                 nesqp->hte_added = 1;
3056                                 break;
3057                         case IB_QPS_SQD:
3058                                 issue_modify_qp = 1;
3059                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3060                                                 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3061                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3062                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3063                                         nes_rem_ref(&nesqp->ibqp);
3064                                         return 0;
3065                                 } else {
3066                                         if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3067                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3068                                                                 " ignored due to current iWARP state\n",
3069                                                                 nesqp->hwqp.qp_id);
3070                                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3071                                                 nes_rem_ref(&nesqp->ibqp);
3072                                                 return -EINVAL;
3073                                         }
3074                                         if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3075                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3076                                                                 " already done based on hw state.\n",
3077                                                                 nesqp->hwqp.qp_id);
3078                                                 issue_modify_qp = 0;
3079                                                 nesqp->in_disconnect = 0;
3080                                         }
3081                                         switch (nesqp->hw_iwarp_state) {
3082                                                 case NES_AEQE_IWARP_STATE_CLOSING:
3083                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3084                                                 case NES_AEQE_IWARP_STATE_TERMINATE:
3085                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3086                                                         break;
3087                                                 case NES_AEQE_IWARP_STATE_ERROR:
3088                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3089                                                         break;
3090                                                 default:
3091                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3092                                                         nesqp->in_disconnect = 1;
3093                                                         nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3094                                                         break;
3095                                         }
3096                                 }
3097                                 break;
3098                         case IB_QPS_SQE:
3099                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3100                                                 nesqp->hwqp.qp_id);
3101                                 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3102                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3103                                         nes_rem_ref(&nesqp->ibqp);
3104                                         return -EINVAL;
3105                                 }
3106                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3107                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3108                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3109                                 issue_modify_qp = 1;
3110                                 nesqp->in_disconnect = 1;
3111                                 break;
3112                         case IB_QPS_ERR:
3113                         case IB_QPS_RESET:
3114                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3115                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3116                                         nes_rem_ref(&nesqp->ibqp);
3117                                         return -EINVAL;
3118                                 }
3119                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3120                                                 nesqp->hwqp.qp_id);
3121                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3122                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3123                                         if (nesqp->hte_added) {
3124                                                 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3125                                                 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3126                                                 nesqp->hte_added = 0;
3127                                         }
3128                                 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3129                                                 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3130                                         next_iwarp_state |= NES_CQP_QP_RESET;
3131                                         nesqp->in_disconnect = 1;
3132                                 } else {
3133                                         nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3134                                                         nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3135                                         dont_wait = 1;
3136                                 }
3137                                 issue_modify_qp = 1;
3138                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3139                                 break;
3140                         default:
3141                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3142                                 nes_rem_ref(&nesqp->ibqp);
3143                                 return -EINVAL;
3144                                 break;
3145                 }
3146
3147                 nesqp->ibqp_state = attr->qp_state;
3148                 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3149                                 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3150                                 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3151                                 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
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                         issue_disconnect = 1;
3156                 } else {
3157                         nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3158                         nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3159                                         nesqp->iwarp_state);
3160                 }
3161         }
3162
3163         if (attr_mask & IB_QP_ACCESS_FLAGS) {
3164                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3165                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3166                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3167                         issue_modify_qp = 1;
3168                 }
3169                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3170                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3171                         issue_modify_qp = 1;
3172                 }
3173                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3174                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3175                         issue_modify_qp = 1;
3176                 }
3177                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3178                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3179                         issue_modify_qp = 1;
3180                 }
3181
3182                 if (nesqp->user_mode) {
3183                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3184                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3185                         issue_modify_qp = 1;
3186                 }
3187         }
3188
3189         original_last_aeq = nesqp->last_aeq;
3190         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3191
3192         nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3193
3194         ret = 0;
3195
3196
3197         if (issue_modify_qp) {
3198                 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3199                 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
3200                 if (ret)
3201                         nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3202                                         " failed for QP%u.\n",
3203                                         next_iwarp_state, nesqp->hwqp.qp_id);
3204
3205         }
3206
3207         if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3208                 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3209                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3210                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3211                                 original_last_aeq, nesqp->last_aeq);
3212                 if ((!ret) ||
3213                                 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3214                                 (ret))) {
3215                         if (dont_wait) {
3216                                 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3217                                         nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3218                                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3219                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3220                                                         original_last_aeq, nesqp->last_aeq);
3221                                         /* this one is for the cm_disconnect thread */
3222                                         nes_add_ref(&nesqp->ibqp);
3223                                         spin_lock_irqsave(&nesqp->lock, qplockflags);
3224                                         nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3225                                         nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3226                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3227                                         nes_cm_disconn(nesqp);
3228                                 } else {
3229                                         nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3230                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3231                                         nes_rem_ref(&nesqp->ibqp);
3232                                 }
3233                         } else {
3234                                 spin_lock_irqsave(&nesqp->lock, qplockflags);
3235                                 if (nesqp->cm_id) {
3236                                         /* These two are for the timer thread */
3237                                         if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3238                                                 nes_add_ref(&nesqp->ibqp);
3239                                                 nesqp->cm_id->add_ref(nesqp->cm_id);
3240                                                 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3241                                                                 " need ae to finish up, original_last_aeq = 0x%04X."
3242                                                                 " last_aeq = 0x%04X, scheduling timer.\n",
3243                                                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3244                                                                 original_last_aeq, nesqp->last_aeq);
3245                                                 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3246                                         }
3247                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3248                                 } else {
3249                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3250                                         nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3251                                                         " need ae to finish up, original_last_aeq = 0x%04X."
3252                                                         " last_aeq = 0x%04X.\n",
3253                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3254                                                         original_last_aeq, nesqp->last_aeq);
3255                                 }
3256                         }
3257                 } else {
3258                         nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3259                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3260                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3261                                         original_last_aeq, nesqp->last_aeq);
3262                         nes_rem_ref(&nesqp->ibqp);
3263                 }
3264         } else {
3265                 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3266                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3267                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3268                                 original_last_aeq, nesqp->last_aeq);
3269                 nes_rem_ref(&nesqp->ibqp);
3270         }
3271
3272         err = 0;
3273
3274         nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3275                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3276
3277         return err;
3278 }
3279
3280
3281 /**
3282  * nes_muticast_attach
3283  */
3284 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3285 {
3286         nes_debug(NES_DBG_INIT, "\n");
3287         return -ENOSYS;
3288 }
3289
3290
3291 /**
3292  * nes_multicast_detach
3293  */
3294 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3295 {
3296         nes_debug(NES_DBG_INIT, "\n");
3297         return -ENOSYS;
3298 }
3299
3300
3301 /**
3302  * nes_process_mad
3303  */
3304 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3305                 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3306                 struct ib_mad *in_mad, struct ib_mad *out_mad)
3307 {
3308         nes_debug(NES_DBG_INIT, "\n");
3309         return -ENOSYS;
3310 }
3311
3312 static inline void
3313 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3314 {
3315         int sge_index;
3316         int total_payload_length = 0;
3317         for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3318                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3319                         ib_wr->sg_list[sge_index].addr);
3320                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3321                         ib_wr->sg_list[sge_index].length);
3322                 if (uselkey)
3323                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3324                                                 (ib_wr->sg_list[sge_index].lkey));
3325                 else
3326                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3327
3328                 total_payload_length += ib_wr->sg_list[sge_index].length;
3329         }
3330         nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3331                         total_payload_length);
3332         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3333                                 total_payload_length);
3334 }
3335
3336 /**
3337  * nes_post_send
3338  */
3339 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3340                 struct ib_send_wr **bad_wr)
3341 {
3342         u64 u64temp;
3343         unsigned long flags = 0;
3344         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3345         struct nes_device *nesdev = nesvnic->nesdev;
3346         struct nes_qp *nesqp = to_nesqp(ibqp);
3347         struct nes_hw_qp_wqe *wqe;
3348         int err;
3349         u32 qsize = nesqp->hwqp.sq_size;
3350         u32 head;
3351         u32 wqe_misc;
3352         u32 wqe_count;
3353         u32 counter;
3354         u32 total_payload_length;
3355
3356         err = 0;
3357         wqe_misc = 0;
3358         wqe_count = 0;
3359         total_payload_length = 0;
3360
3361         if (nesqp->ibqp_state > IB_QPS_RTS)
3362                 return -EINVAL;
3363
3364                 spin_lock_irqsave(&nesqp->lock, flags);
3365
3366         head = nesqp->hwqp.sq_head;
3367
3368         while (ib_wr) {
3369                 /* Check for SQ overflow */
3370                 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3371                         err = -EINVAL;
3372                         break;
3373                 }
3374
3375                 wqe = &nesqp->hwqp.sq_vbase[head];
3376                 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3377                                 nesqp->hwqp.qp_id, wqe, head); */
3378                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3379                 u64temp = (u64)(ib_wr->wr_id);
3380                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3381                                         u64temp);
3382                         switch (ib_wr->opcode) {
3383                                 case IB_WR_SEND:
3384                                         if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3385                                                 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3386                                         } else {
3387                                                 wqe_misc = NES_IWARP_SQ_OP_SEND;
3388                                         }
3389                                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3390                                                 err = -EINVAL;
3391                                                 break;
3392                                         }
3393                                         if (ib_wr->send_flags & IB_SEND_FENCE) {
3394                                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3395                                         }
3396                                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3397                                                         ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3398                                                         (ib_wr->sg_list[0].length <= 64)) {
3399                                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3400                                                                (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3401                                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3402                                                                 ib_wr->sg_list[0].length);
3403                                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3404                                         } else {
3405                                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3406                                         }
3407
3408                                         break;
3409                                 case IB_WR_RDMA_WRITE:
3410                                         wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3411                                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3412                                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3413                                                                 ib_wr->num_sge,
3414                                                                 nesdev->nesadapter->max_sge);
3415                                                 err = -EINVAL;
3416                                                 break;
3417                                         }
3418                                         if (ib_wr->send_flags & IB_SEND_FENCE) {
3419                                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3420                                         }
3421
3422                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3423                                                         ib_wr->wr.rdma.rkey);
3424                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3425                                                         ib_wr->wr.rdma.remote_addr);
3426
3427                                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3428                                                         ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3429                                                         (ib_wr->sg_list[0].length <= 64)) {
3430                                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3431                                                                (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3432                                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3433                                                                 ib_wr->sg_list[0].length);
3434                                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3435                                         } else {
3436                                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3437                                         }
3438                                         wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3439                                                         wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3440                                         break;
3441                                 case IB_WR_RDMA_READ:
3442                                         /* iWARP only supports 1 sge for RDMA reads */
3443                                         if (ib_wr->num_sge > 1) {
3444                                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3445                                                                 ib_wr->num_sge);
3446                                                 err = -EINVAL;
3447                                                 break;
3448                                         }
3449                                         wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3450                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3451                                                         ib_wr->wr.rdma.remote_addr);
3452                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3453                                                         ib_wr->wr.rdma.rkey);
3454                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3455                                                         ib_wr->sg_list->length);
3456                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3457                                                         ib_wr->sg_list->addr);
3458                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3459                                                         ib_wr->sg_list->lkey);
3460                                         break;
3461                                 default:
3462                                         /* error */
3463                                         err = -EINVAL;
3464                                         break;
3465                         }
3466
3467                 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3468                         wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3469                 }
3470                 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3471
3472                 ib_wr = ib_wr->next;
3473                 head++;
3474                 wqe_count++;
3475                 if (head >= qsize)
3476                         head = 0;
3477
3478         }
3479
3480         nesqp->hwqp.sq_head = head;
3481         barrier();
3482         while (wqe_count) {
3483                 counter = min(wqe_count, ((u32)255));
3484                 wqe_count -= counter;
3485                 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3486                                 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3487         }
3488
3489                 spin_unlock_irqrestore(&nesqp->lock, flags);
3490
3491         if (err)
3492                 *bad_wr = ib_wr;
3493         return err;
3494 }
3495
3496
3497 /**
3498  * nes_post_recv
3499  */
3500 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3501                 struct ib_recv_wr **bad_wr)
3502 {
3503         u64 u64temp;
3504         unsigned long flags = 0;
3505         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3506         struct nes_device *nesdev = nesvnic->nesdev;
3507         struct nes_qp *nesqp = to_nesqp(ibqp);
3508         struct nes_hw_qp_wqe *wqe;
3509         int err = 0;
3510         int sge_index;
3511         u32 qsize = nesqp->hwqp.rq_size;
3512         u32 head;
3513         u32 wqe_count = 0;
3514         u32 counter;
3515         u32 total_payload_length;
3516
3517         if (nesqp->ibqp_state > IB_QPS_RTS)
3518                 return -EINVAL;
3519
3520                 spin_lock_irqsave(&nesqp->lock, flags);
3521
3522         head = nesqp->hwqp.rq_head;
3523
3524         while (ib_wr) {
3525                 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3526                         err = -EINVAL;
3527                         break;
3528                 }
3529                 /* Check for RQ overflow */
3530                 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3531                         err = -EINVAL;
3532                         break;
3533                 }
3534
3535                 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3536                 wqe = &nesqp->hwqp.rq_vbase[head];
3537
3538                 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3539                                 nesqp->hwqp.qp_id, wqe, head); */
3540                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3541                 u64temp = (u64)(ib_wr->wr_id);
3542                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3543                                         u64temp);
3544                 total_payload_length = 0;
3545                 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3546                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3547                                         ib_wr->sg_list[sge_index].addr);
3548                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3549                                         ib_wr->sg_list[sge_index].length);
3550                         set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3551                                         ib_wr->sg_list[sge_index].lkey);
3552
3553                         total_payload_length += ib_wr->sg_list[sge_index].length;
3554                 }
3555                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3556                                         total_payload_length);
3557
3558                 ib_wr = ib_wr->next;
3559                 head++;
3560                 wqe_count++;
3561                 if (head >= qsize)
3562                         head = 0;
3563         }
3564
3565         nesqp->hwqp.rq_head = head;
3566         barrier();
3567         while (wqe_count) {
3568                 counter = min(wqe_count, ((u32)255));
3569                 wqe_count -= counter;
3570                 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3571         }
3572
3573                 spin_unlock_irqrestore(&nesqp->lock, flags);
3574
3575         if (err)
3576                 *bad_wr = ib_wr;
3577         return err;
3578 }
3579
3580
3581 /**
3582  * nes_poll_cq
3583  */
3584 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3585 {
3586         u64 u64temp;
3587         u64 wrid;
3588         /* u64 u64temp; */
3589         unsigned long flags = 0;
3590         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3591         struct nes_device *nesdev = nesvnic->nesdev;
3592         struct nes_cq *nescq = to_nescq(ibcq);
3593         struct nes_qp *nesqp;
3594         struct nes_hw_cqe cqe;
3595         u32 head;
3596         u32 wq_tail;
3597         u32 cq_size;
3598         u32 cqe_count = 0;
3599         u32 wqe_index;
3600         u32 u32temp;
3601         /* u32 counter; */
3602
3603         nes_debug(NES_DBG_CQ, "\n");
3604
3605                 spin_lock_irqsave(&nescq->lock, flags);
3606
3607         head = nescq->hw_cq.cq_head;
3608         cq_size = nescq->hw_cq.cq_size;
3609
3610         while (cqe_count < num_entries) {
3611                 if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3612                                 NES_CQE_VALID) {
3613                         /*
3614                          * Make sure we read CQ entry contents *after*
3615                          * we've checked the valid bit.
3616                          */
3617                         rmb();
3618
3619                         cqe = nescq->hw_cq.cq_vbase[head];
3620                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3621                         u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3622                         wqe_index = u32temp &
3623                                         (nesdev->nesadapter->max_qp_wr - 1);
3624                         u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3625                         /* parse CQE, get completion context from WQE (either rq or sq */
3626                         u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3627                                         ((u64)u32temp);
3628                         nesqp = *((struct nes_qp **)&u64temp);
3629                         memset(entry, 0, sizeof *entry);
3630                         if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3631                                 entry->status = IB_WC_SUCCESS;
3632                         } else {
3633                                 entry->status = IB_WC_WR_FLUSH_ERR;
3634                         }
3635
3636                         entry->qp = &nesqp->ibqp;
3637                         entry->src_qp = nesqp->hwqp.qp_id;
3638
3639                         if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3640                                 if (nesqp->skip_lsmm) {
3641                                         nesqp->skip_lsmm = 0;
3642                                         wq_tail = nesqp->hwqp.sq_tail++;
3643                                 }
3644
3645                                 /* Working on a SQ Completion*/
3646                                 wq_tail = wqe_index;
3647                                 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3648                                 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3649                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3650                                                 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3651                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3652                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3653                                                 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3654
3655                                 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3656                                                 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3657                                         case NES_IWARP_SQ_OP_RDMAW:
3658                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3659                                                 entry->opcode = IB_WC_RDMA_WRITE;
3660                                                 break;
3661                                         case NES_IWARP_SQ_OP_RDMAR:
3662                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3663                                                 entry->opcode = IB_WC_RDMA_READ;
3664                                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3665                                                                 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3666                                                 break;
3667                                         case NES_IWARP_SQ_OP_SENDINV:
3668                                         case NES_IWARP_SQ_OP_SENDSEINV:
3669                                         case NES_IWARP_SQ_OP_SEND:
3670                                         case NES_IWARP_SQ_OP_SENDSE:
3671                                                 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3672                                                 entry->opcode = IB_WC_SEND;
3673                                                 break;
3674                                 }
3675                         } else {
3676                                 /* Working on a RQ Completion*/
3677                                 wq_tail = wqe_index;
3678                                         nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3679                                 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3680                                 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3681                                         ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3682                                         entry->opcode = IB_WC_RECV;
3683                         }
3684                         entry->wr_id = wrid;
3685
3686                         if (++head >= cq_size)
3687                                 head = 0;
3688                         cqe_count++;
3689                         nescq->polled_completions++;
3690                         if ((nescq->polled_completions > (cq_size / 2)) ||
3691                                         (nescq->polled_completions == 255)) {
3692                                 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3693                                                 " are pending %u of %u.\n",
3694                                                 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3695                                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3696                                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3697                                 nescq->polled_completions = 0;
3698                         }
3699                         entry++;
3700                 } else
3701                         break;
3702         }
3703
3704         if (nescq->polled_completions) {
3705                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3706                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3707                 nescq->polled_completions = 0;
3708         }
3709
3710         nescq->hw_cq.cq_head = head;
3711         nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3712                         cqe_count, nescq->hw_cq.cq_number);
3713
3714                 spin_unlock_irqrestore(&nescq->lock, flags);
3715
3716         return cqe_count;
3717 }
3718
3719
3720 /**
3721  * nes_req_notify_cq
3722  */
3723 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3724                 {
3725         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3726         struct nes_device *nesdev = nesvnic->nesdev;
3727         struct nes_cq *nescq = to_nescq(ibcq);
3728         u32 cq_arm;
3729
3730         nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3731                         nescq->hw_cq.cq_number);
3732
3733         cq_arm = nescq->hw_cq.cq_number;
3734         if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3735                 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3736         else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3737                 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3738         else
3739                 return -EINVAL;
3740
3741         nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3742         nes_read32(nesdev->regs+NES_CQE_ALLOC);
3743
3744         return 0;
3745 }
3746
3747
3748 /**
3749  * nes_init_ofa_device
3750  */
3751 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3752 {
3753         struct nes_ib_device *nesibdev;
3754         struct nes_vnic *nesvnic = netdev_priv(netdev);
3755         struct nes_device *nesdev = nesvnic->nesdev;
3756
3757         nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3758         if (nesibdev == NULL) {
3759                 return NULL;
3760         }
3761         strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3762         nesibdev->ibdev.owner = THIS_MODULE;
3763
3764         nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3765         memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3766         memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3767
3768         nesibdev->ibdev.uverbs_cmd_mask =
3769                         (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3770                         (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3771                         (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3772                         (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3773                         (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3774                         (1ull << IB_USER_VERBS_CMD_REG_MR) |
3775                         (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3776                         (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3777                         (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3778                         (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3779                         (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3780                         (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3781                         (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3782                         (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3783                         (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3784                         (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3785                         (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3786                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3787                         (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3788                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3789                         (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3790                         (1ull << IB_USER_VERBS_CMD_POST_SEND);
3791
3792         nesibdev->ibdev.phys_port_cnt = 1;
3793         nesibdev->ibdev.num_comp_vectors = 1;
3794         nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3795         nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3796         nesibdev->ibdev.query_device = nes_query_device;
3797         nesibdev->ibdev.query_port = nes_query_port;
3798         nesibdev->ibdev.modify_port = nes_modify_port;
3799         nesibdev->ibdev.query_pkey = nes_query_pkey;
3800         nesibdev->ibdev.query_gid = nes_query_gid;
3801         nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3802         nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3803         nesibdev->ibdev.mmap = nes_mmap;
3804         nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3805         nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3806         nesibdev->ibdev.create_ah = nes_create_ah;
3807         nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3808         nesibdev->ibdev.create_qp = nes_create_qp;
3809         nesibdev->ibdev.modify_qp = nes_modify_qp;
3810         nesibdev->ibdev.query_qp = nes_query_qp;
3811         nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3812         nesibdev->ibdev.create_cq = nes_create_cq;
3813         nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3814         nesibdev->ibdev.poll_cq = nes_poll_cq;
3815         nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3816         nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3817         nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3818         nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3819         nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3820         nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3821         nesibdev->ibdev.bind_mw = nes_bind_mw;
3822
3823         nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3824         nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3825         nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3826         nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3827
3828         nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3829         nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3830         nesibdev->ibdev.process_mad = nes_process_mad;
3831
3832         nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3833         nesibdev->ibdev.post_send = nes_post_send;
3834         nesibdev->ibdev.post_recv = nes_post_recv;
3835
3836         nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3837         if (nesibdev->ibdev.iwcm == NULL) {
3838                 ib_dealloc_device(&nesibdev->ibdev);
3839                 return NULL;
3840         }
3841         nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3842         nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3843         nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3844         nesibdev->ibdev.iwcm->connect = nes_connect;
3845         nesibdev->ibdev.iwcm->accept = nes_accept;
3846         nesibdev->ibdev.iwcm->reject = nes_reject;
3847         nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3848         nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3849
3850         return nesibdev;
3851 }
3852
3853
3854 /**
3855  * nes_destroy_ofa_device
3856  */
3857 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3858 {
3859         if (nesibdev == NULL)
3860                 return;
3861
3862         nes_unregister_ofa_device(nesibdev);
3863
3864         kfree(nesibdev->ibdev.iwcm);
3865         ib_dealloc_device(&nesibdev->ibdev);
3866 }
3867
3868
3869 /**
3870  * nes_register_ofa_device
3871  */
3872 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3873 {
3874         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3875         struct nes_device *nesdev = nesvnic->nesdev;
3876         struct nes_adapter *nesadapter = nesdev->nesadapter;
3877         int i, ret;
3878
3879         ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3880         if (ret) {
3881                 return ret;
3882         }
3883
3884         /* Get the resources allocated to this device */
3885         nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3886         nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3887         nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3888         nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3889
3890         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3891                 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3892                 if (ret) {
3893                         while (i > 0) {
3894                                 i--;
3895                                 device_remove_file(&nesibdev->ibdev.dev,
3896                                                    nes_dev_attributes[i]);
3897                         }
3898                         ib_unregister_device(&nesibdev->ibdev);
3899                         return ret;
3900                 }
3901         }
3902
3903         nesvnic->of_device_registered = 1;
3904
3905         return 0;
3906 }
3907
3908
3909 /**
3910  * nes_unregister_ofa_device
3911  */
3912 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3913 {
3914         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3915         int i;
3916
3917         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3918                 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3919         }
3920
3921         if (nesvnic->of_device_registered) {
3922                 ib_unregister_device(&nesibdev->ibdev);
3923         }
3924
3925         nesvnic->of_device_registered = 0;
3926 }