Merge branches 'cxgb3', 'endian', 'ipath', 'ipoib', 'iser', 'mad', 'misc', 'mlx4...
[linux-3.10.git] / drivers / infiniband / hw / nes / nes_verbs.c
1 /*
2  * Copyright (c) 2006 - 2009 Intel-NE, 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         struct nes_pd *nespd = to_nespd(ibpd);
59         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
60         struct nes_device *nesdev = nesvnic->nesdev;
61         struct nes_adapter *nesadapter = nesdev->nesadapter;
62         struct nes_cqp_request *cqp_request;
63         struct nes_mr *nesmr;
64         struct ib_mw *ibmw;
65         struct nes_hw_cqp_wqe *cqp_wqe;
66         int ret;
67         u32 stag;
68         u32 stag_index = 0;
69         u32 next_stag_index = 0;
70         u32 driver_key = 0;
71         u8 stag_key = 0;
72
73         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
74         stag_key = (u8)next_stag_index;
75
76         driver_key = 0;
77
78         next_stag_index >>= 8;
79         next_stag_index %= nesadapter->max_mr;
80
81         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
82                         nesadapter->max_mr, &stag_index, &next_stag_index);
83         if (ret) {
84                 return ERR_PTR(ret);
85         }
86
87         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
88         if (!nesmr) {
89                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
90                 return ERR_PTR(-ENOMEM);
91         }
92
93         stag = stag_index << 8;
94         stag |= driver_key;
95         stag += (u32)stag_key;
96
97         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
98                         stag, stag_index);
99
100         /* Register the region with the adapter */
101         cqp_request = nes_get_cqp_request(nesdev);
102         if (cqp_request == NULL) {
103                 kfree(nesmr);
104                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
105                 return ERR_PTR(-ENOMEM);
106         }
107
108         cqp_request->waiting = 1;
109         cqp_wqe = &cqp_request->cqp_wqe;
110
111         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
112                         cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
113                         NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
114                         NES_CQP_STAG_REM_ACC_EN);
115
116         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
117         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
118         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
119
120         atomic_set(&cqp_request->refcount, 2);
121         nes_post_cqp_request(nesdev, cqp_request);
122
123         /* Wait for CQP */
124         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
125                         NES_EVENT_TIMEOUT);
126         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
127                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
128                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
129         if ((!ret) || (cqp_request->major_code)) {
130                 nes_put_cqp_request(nesdev, cqp_request);
131                 kfree(nesmr);
132                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
133                 if (!ret) {
134                         return ERR_PTR(-ETIME);
135                 } else {
136                         return ERR_PTR(-ENOMEM);
137                 }
138         }
139         nes_put_cqp_request(nesdev, cqp_request);
140
141         nesmr->ibmw.rkey = stag;
142         nesmr->mode = IWNES_MEMREG_TYPE_MW;
143         ibmw = &nesmr->ibmw;
144         nesmr->pbl_4k = 0;
145         nesmr->pbls_used = 0;
146
147         return ibmw;
148 }
149
150
151 /**
152  * nes_dealloc_mw
153  */
154 static int nes_dealloc_mw(struct ib_mw *ibmw)
155 {
156         struct nes_mr *nesmr = to_nesmw(ibmw);
157         struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
158         struct nes_device *nesdev = nesvnic->nesdev;
159         struct nes_adapter *nesadapter = nesdev->nesadapter;
160         struct nes_hw_cqp_wqe *cqp_wqe;
161         struct nes_cqp_request *cqp_request;
162         int err = 0;
163         int ret;
164
165         /* Deallocate the window with the adapter */
166         cqp_request = nes_get_cqp_request(nesdev);
167         if (cqp_request == NULL) {
168                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
169                 return -ENOMEM;
170         }
171         cqp_request->waiting = 1;
172         cqp_wqe = &cqp_request->cqp_wqe;
173         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
174         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
175         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
176
177         atomic_set(&cqp_request->refcount, 2);
178         nes_post_cqp_request(nesdev, cqp_request);
179
180         /* Wait for CQP */
181         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
182                         ibmw->rkey);
183         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
184                         NES_EVENT_TIMEOUT);
185         nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
186                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
187                         ret, cqp_request->major_code, cqp_request->minor_code);
188         if (!ret)
189                 err = -ETIME;
190         else if (cqp_request->major_code)
191                 err = -EIO;
192
193         nes_put_cqp_request(nesdev, cqp_request);
194
195         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
196                         (ibmw->rkey & 0x0fffff00) >> 8);
197         kfree(nesmr);
198
199         return err;
200 }
201
202
203 /**
204  * nes_bind_mw
205  */
206 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
207                 struct ib_mw_bind *ibmw_bind)
208 {
209         u64 u64temp;
210         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
211         struct nes_device *nesdev = nesvnic->nesdev;
212         /* struct nes_mr *nesmr = to_nesmw(ibmw); */
213         struct nes_qp *nesqp = to_nesqp(ibqp);
214         struct nes_hw_qp_wqe *wqe;
215         unsigned long flags = 0;
216         u32 head;
217         u32 wqe_misc = 0;
218         u32 qsize;
219
220         if (nesqp->ibqp_state > IB_QPS_RTS)
221                 return -EINVAL;
222
223         spin_lock_irqsave(&nesqp->lock, flags);
224
225         head = nesqp->hwqp.sq_head;
226         qsize = nesqp->hwqp.sq_tail;
227
228         /* Check for SQ overflow */
229         if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
230                 spin_unlock_irqrestore(&nesqp->lock, flags);
231                 return -EINVAL;
232         }
233
234         wqe = &nesqp->hwqp.sq_vbase[head];
235         /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
236         nes_fill_init_qp_wqe(wqe, nesqp, head);
237         u64temp = ibmw_bind->wr_id;
238         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
239         wqe_misc = NES_IWARP_SQ_OP_BIND;
240
241         wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
242
243         if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
244                 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
245
246         if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
247                 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
248         }
249         if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
250                 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
251         }
252
253         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
254         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
255         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
256         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
257                         ibmw_bind->length);
258         wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
259         u64temp = (u64)ibmw_bind->addr;
260         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
261
262         head++;
263         if (head >= qsize)
264                 head = 0;
265
266         nesqp->hwqp.sq_head = head;
267         barrier();
268
269         nes_write32(nesdev->regs+NES_WQE_ALLOC,
270                         (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
271
272         spin_unlock_irqrestore(&nesqp->lock, flags);
273
274         return 0;
275 }
276
277
278 /**
279  * nes_alloc_fmr
280  */
281 static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
282                 int ibmr_access_flags,
283                 struct ib_fmr_attr *ibfmr_attr)
284 {
285         unsigned long flags;
286         struct nes_pd *nespd = to_nespd(ibpd);
287         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
288         struct nes_device *nesdev = nesvnic->nesdev;
289         struct nes_adapter *nesadapter = nesdev->nesadapter;
290         struct nes_fmr *nesfmr;
291         struct nes_cqp_request *cqp_request;
292         struct nes_hw_cqp_wqe *cqp_wqe;
293         int ret;
294         u32 stag;
295         u32 stag_index = 0;
296         u32 next_stag_index = 0;
297         u32 driver_key = 0;
298         u32 opcode = 0;
299         u8 stag_key = 0;
300         int i=0;
301         struct nes_vpbl vpbl;
302
303         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
304         stag_key = (u8)next_stag_index;
305
306         driver_key = 0;
307
308         next_stag_index >>= 8;
309         next_stag_index %= nesadapter->max_mr;
310
311         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
312                         nesadapter->max_mr, &stag_index, &next_stag_index);
313         if (ret) {
314                 goto failed_resource_alloc;
315         }
316
317         nesfmr = kzalloc(sizeof(*nesfmr), GFP_KERNEL);
318         if (!nesfmr) {
319                 ret = -ENOMEM;
320                 goto failed_fmr_alloc;
321         }
322
323         nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR;
324         if (ibfmr_attr->max_pages == 1) {
325                 /* use zero length PBL */
326                 nesfmr->nesmr.pbl_4k = 0;
327                 nesfmr->nesmr.pbls_used = 0;
328         } else if (ibfmr_attr->max_pages <= 32) {
329                 /* use PBL 256 */
330                 nesfmr->nesmr.pbl_4k = 0;
331                 nesfmr->nesmr.pbls_used = 1;
332         } else if (ibfmr_attr->max_pages <= 512) {
333                 /* use 4K PBLs */
334                 nesfmr->nesmr.pbl_4k = 1;
335                 nesfmr->nesmr.pbls_used = 1;
336         } else {
337                 /* use two level 4K PBLs */
338                 /* add support for two level 256B PBLs */
339                 nesfmr->nesmr.pbl_4k = 1;
340                 nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages >> 9) +
341                                 ((ibfmr_attr->max_pages & 511) ? 1 : 0);
342         }
343         /* Register the region with the adapter */
344         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
345
346         /* track PBL resources */
347         if (nesfmr->nesmr.pbls_used != 0) {
348                 if (nesfmr->nesmr.pbl_4k) {
349                         if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
350                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
351                                 ret = -ENOMEM;
352                                 goto failed_vpbl_avail;
353                         } else {
354                                 nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
355                         }
356                 } else {
357                         if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
358                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
359                                 ret = -ENOMEM;
360                                 goto failed_vpbl_avail;
361                         } else {
362                                 nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
363                         }
364                 }
365         }
366
367         /* one level pbl */
368         if (nesfmr->nesmr.pbls_used == 0) {
369                 nesfmr->root_vpbl.pbl_vbase = NULL;
370                 nes_debug(NES_DBG_MR,  "zero level pbl \n");
371         } else if (nesfmr->nesmr.pbls_used == 1) {
372                 /* can change it to kmalloc & dma_map_single */
373                 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
374                                 &nesfmr->root_vpbl.pbl_pbase);
375                 if (!nesfmr->root_vpbl.pbl_vbase) {
376                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
377                         ret = -ENOMEM;
378                         goto failed_vpbl_alloc;
379                 }
380                 nesfmr->leaf_pbl_cnt = 0;
381                 nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n",
382                                 nesfmr->root_vpbl.pbl_vbase);
383         }
384         /* two level pbl */
385         else {
386                 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
387                                 &nesfmr->root_vpbl.pbl_pbase);
388                 if (!nesfmr->root_vpbl.pbl_vbase) {
389                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
390                         ret = -ENOMEM;
391                         goto failed_vpbl_alloc;
392                 }
393
394                 nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
395                 nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_ATOMIC);
396                 if (!nesfmr->root_vpbl.leaf_vpbl) {
397                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
398                         ret = -ENOMEM;
399                         goto failed_leaf_vpbl_alloc;
400                 }
401
402                 nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
403                                 " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
404                                 nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
405
406                 for (i=0; i<nesfmr->leaf_pbl_cnt; i++)
407                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL;
408
409                 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
410                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
411                                         &vpbl.pbl_pbase);
412
413                         if (!vpbl.pbl_vbase) {
414                                 ret = -ENOMEM;
415                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
416                                 goto failed_leaf_vpbl_pages_alloc;
417                         }
418
419                         nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
420                         nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
421                         nesfmr->root_vpbl.leaf_vpbl[i] = vpbl;
422
423                         nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n",
424                                         nesfmr->root_vpbl.pbl_vbase[i].pa_low,
425                                         nesfmr->root_vpbl.pbl_vbase[i].pa_high,
426                                         &nesfmr->root_vpbl.leaf_vpbl[i]);
427                 }
428         }
429         nesfmr->ib_qp = NULL;
430         nesfmr->access_rights =0;
431
432         stag = stag_index << 8;
433         stag |= driver_key;
434         stag += (u32)stag_key;
435
436         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
437         cqp_request = nes_get_cqp_request(nesdev);
438         if (cqp_request == NULL) {
439                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
440                 ret = -ENOMEM;
441                 goto failed_leaf_vpbl_pages_alloc;
442         }
443         cqp_request->waiting = 1;
444         cqp_wqe = &cqp_request->cqp_wqe;
445
446         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
447                         stag, stag_index);
448
449         opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
450
451         if (nesfmr->nesmr.pbl_4k == 1)
452                 opcode |= NES_CQP_STAG_PBL_BLK_SIZE;
453
454         if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) {
455                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE |
456                                 NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN;
457                 nesfmr->access_rights |=
458                                 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE |
459                                 NES_CQP_STAG_REM_ACC_EN;
460         }
461
462         if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) {
463                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ |
464                                 NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN;
465                 nesfmr->access_rights |=
466                                 NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ |
467                                 NES_CQP_STAG_REM_ACC_EN;
468         }
469
470         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
471         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
472         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
473         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
474
475         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] =
476                         cpu_to_le32((nesfmr->nesmr.pbls_used>1) ?
477                         (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used);
478
479         atomic_set(&cqp_request->refcount, 2);
480         nes_post_cqp_request(nesdev, cqp_request);
481
482         /* Wait for CQP */
483         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
484                         NES_EVENT_TIMEOUT);
485         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
486                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
487                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
488
489         if ((!ret) || (cqp_request->major_code)) {
490                 nes_put_cqp_request(nesdev, cqp_request);
491                 ret = (!ret) ? -ETIME : -EIO;
492                 goto failed_leaf_vpbl_pages_alloc;
493         }
494         nes_put_cqp_request(nesdev, cqp_request);
495         nesfmr->nesmr.ibfmr.lkey = stag;
496         nesfmr->nesmr.ibfmr.rkey = stag;
497         nesfmr->attr = *ibfmr_attr;
498
499         return &nesfmr->nesmr.ibfmr;
500
501         failed_leaf_vpbl_pages_alloc:
502         /* unroll all allocated pages */
503         for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
504                 if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) {
505                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
506                                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
507                 }
508         }
509         if (nesfmr->root_vpbl.leaf_vpbl)
510                 kfree(nesfmr->root_vpbl.leaf_vpbl);
511
512         failed_leaf_vpbl_alloc:
513         if (nesfmr->leaf_pbl_cnt == 0) {
514                 if (nesfmr->root_vpbl.pbl_vbase)
515                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
516                                         nesfmr->root_vpbl.pbl_pbase);
517         } else
518                 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
519                                 nesfmr->root_vpbl.pbl_pbase);
520
521         failed_vpbl_alloc:
522         if (nesfmr->nesmr.pbls_used != 0) {
523                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
524                 if (nesfmr->nesmr.pbl_4k)
525                         nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
526                 else
527                         nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
528                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
529         }
530
531 failed_vpbl_avail:
532         kfree(nesfmr);
533
534         failed_fmr_alloc:
535         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
536
537         failed_resource_alloc:
538         return ERR_PTR(ret);
539 }
540
541
542 /**
543  * nes_dealloc_fmr
544  */
545 static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
546 {
547         unsigned long flags;
548         struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
549         struct nes_fmr *nesfmr = to_nesfmr(nesmr);
550         struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
551         struct nes_device *nesdev = nesvnic->nesdev;
552         struct nes_adapter *nesadapter = nesdev->nesadapter;
553         int i = 0;
554         int rc;
555
556         /* free the resources */
557         if (nesfmr->leaf_pbl_cnt == 0) {
558                 /* single PBL case */
559                 if (nesfmr->root_vpbl.pbl_vbase)
560                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
561                                         nesfmr->root_vpbl.pbl_pbase);
562         } else {
563                 for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
564                         pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
565                                         nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
566                 }
567                 kfree(nesfmr->root_vpbl.leaf_vpbl);
568                 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
569                                 nesfmr->root_vpbl.pbl_pbase);
570         }
571         nesmr->ibmw.device = ibfmr->device;
572         nesmr->ibmw.pd = ibfmr->pd;
573         nesmr->ibmw.rkey = ibfmr->rkey;
574         nesmr->ibmw.uobject = NULL;
575
576         rc = nes_dealloc_mw(&nesmr->ibmw);
577
578         if ((rc == 0) && (nesfmr->nesmr.pbls_used != 0)) {
579                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
580                 if (nesfmr->nesmr.pbl_4k) {
581                         nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
582                         WARN_ON(nesadapter->free_4kpbl > nesadapter->max_4kpbl);
583                 } else {
584                         nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
585                         WARN_ON(nesadapter->free_256pbl > nesadapter->max_256pbl);
586                 }
587                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
588         }
589
590         return rc;
591 }
592
593
594 /**
595  * nes_map_phys_fmr
596  */
597 static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
598                 int list_len, u64 iova)
599 {
600         return 0;
601 }
602
603
604 /**
605  * nes_unmap_frm
606  */
607 static int nes_unmap_fmr(struct list_head *ibfmr_list)
608 {
609         return 0;
610 }
611
612
613
614 /**
615  * nes_query_device
616  */
617 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
618 {
619         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
620         struct nes_device *nesdev = nesvnic->nesdev;
621         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
622
623         memset(props, 0, sizeof(*props));
624         memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
625
626         props->fw_ver = nesdev->nesadapter->fw_ver;
627         props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
628         props->vendor_id = nesdev->nesadapter->vendor_id;
629         props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
630         props->hw_ver = nesdev->nesadapter->hw_rev;
631         props->max_mr_size = 0x80000000;
632         props->max_qp = nesibdev->max_qp;
633         props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
634         props->max_sge = nesdev->nesadapter->max_sge;
635         props->max_cq = nesibdev->max_cq;
636         props->max_cqe = nesdev->nesadapter->max_cqe - 1;
637         props->max_mr = nesibdev->max_mr;
638         props->max_mw = nesibdev->max_mr;
639         props->max_pd = nesibdev->max_pd;
640         props->max_sge_rd = 1;
641         switch (nesdev->nesadapter->max_irrq_wr) {
642                 case 0:
643                         props->max_qp_rd_atom = 1;
644                         break;
645                 case 1:
646                         props->max_qp_rd_atom = 4;
647                         break;
648                 case 2:
649                         props->max_qp_rd_atom = 16;
650                         break;
651                 case 3:
652                         props->max_qp_rd_atom = 32;
653                         break;
654                 default:
655                         props->max_qp_rd_atom = 0;
656         }
657         props->max_qp_init_rd_atom = props->max_qp_wr;
658         props->atomic_cap = IB_ATOMIC_NONE;
659         props->max_map_per_fmr = 1;
660
661         return 0;
662 }
663
664
665 /**
666  * nes_query_port
667  */
668 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
669 {
670         memset(props, 0, sizeof(*props));
671
672         props->max_mtu = IB_MTU_2048;
673         props->active_mtu = IB_MTU_2048;
674         props->lid = 1;
675         props->lmc = 0;
676         props->sm_lid = 0;
677         props->sm_sl = 0;
678         props->state = IB_PORT_ACTIVE;
679         props->phys_state = 0;
680         props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
681                         IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
682         props->gid_tbl_len = 1;
683         props->pkey_tbl_len = 1;
684         props->qkey_viol_cntr = 0;
685         props->active_width = IB_WIDTH_4X;
686         props->active_speed = 1;
687         props->max_msg_sz = 0x80000000;
688
689         return 0;
690 }
691
692
693 /**
694  * nes_modify_port
695  */
696 static int nes_modify_port(struct ib_device *ibdev, u8 port,
697                 int port_modify_mask, struct ib_port_modify *props)
698 {
699         return 0;
700 }
701
702
703 /**
704  * nes_query_pkey
705  */
706 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
707 {
708         *pkey = 0;
709         return 0;
710 }
711
712
713 /**
714  * nes_query_gid
715  */
716 static int nes_query_gid(struct ib_device *ibdev, u8 port,
717                 int index, union ib_gid *gid)
718 {
719         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
720
721         memset(&(gid->raw[0]), 0, sizeof(gid->raw));
722         memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
723
724         return 0;
725 }
726
727
728 /**
729  * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
730  * of all objects associated with a particular user-mode client.
731  */
732 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
733                 struct ib_udata *udata)
734 {
735         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
736         struct nes_device *nesdev = nesvnic->nesdev;
737         struct nes_adapter *nesadapter = nesdev->nesadapter;
738         struct nes_alloc_ucontext_req req;
739         struct nes_alloc_ucontext_resp uresp;
740         struct nes_ucontext *nes_ucontext;
741         struct nes_ib_device *nesibdev = nesvnic->nesibdev;
742
743
744         if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
745                 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
746                 return ERR_PTR(-EINVAL);
747         }
748
749         if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
750                 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
751                         req.userspace_ver, NES_ABI_USERSPACE_VER);
752                 return ERR_PTR(-EINVAL);
753         }
754
755
756         memset(&uresp, 0, sizeof uresp);
757
758         uresp.max_qps = nesibdev->max_qp;
759         uresp.max_pds = nesibdev->max_pd;
760         uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
761         uresp.virtwq = nesadapter->virtwq;
762         uresp.kernel_ver = NES_ABI_KERNEL_VER;
763
764         nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
765         if (!nes_ucontext)
766                 return ERR_PTR(-ENOMEM);
767
768         nes_ucontext->nesdev = nesdev;
769         nes_ucontext->mmap_wq_offset = uresp.max_pds;
770         nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
771                         ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
772                         PAGE_SIZE;
773
774
775         if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
776                 kfree(nes_ucontext);
777                 return ERR_PTR(-EFAULT);
778         }
779
780         INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
781         INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
782         atomic_set(&nes_ucontext->usecnt, 1);
783         return &nes_ucontext->ibucontext;
784 }
785
786
787 /**
788  * nes_dealloc_ucontext
789  */
790 static int nes_dealloc_ucontext(struct ib_ucontext *context)
791 {
792         /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
793         /* struct nes_device *nesdev = nesvnic->nesdev; */
794         struct nes_ucontext *nes_ucontext = to_nesucontext(context);
795
796         if (!atomic_dec_and_test(&nes_ucontext->usecnt))
797           return 0;
798         kfree(nes_ucontext);
799         return 0;
800 }
801
802
803 /**
804  * nes_mmap
805  */
806 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
807 {
808         unsigned long index;
809         struct nes_vnic *nesvnic = to_nesvnic(context->device);
810         struct nes_device *nesdev = nesvnic->nesdev;
811         /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
812         struct nes_ucontext *nes_ucontext;
813         struct nes_qp *nesqp;
814
815         nes_ucontext = to_nesucontext(context);
816
817
818         if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
819                 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
820                 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
821                                 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
822                 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
823                         nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
824                         return -EFAULT;
825                 }
826                 nesqp = nes_ucontext->mmap_nesqp[index];
827                 if (nesqp == NULL) {
828                         nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
829                         return -EFAULT;
830                 }
831                 if (remap_pfn_range(vma, vma->vm_start,
832                                 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
833                                 vma->vm_end - vma->vm_start,
834                                 vma->vm_page_prot)) {
835                         nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
836                         return -EAGAIN;
837                 }
838                 vma->vm_private_data = nesqp;
839                 return 0;
840         } else {
841                 index = vma->vm_pgoff;
842                 if (!test_bit(index, nes_ucontext->allocated_doorbells))
843                         return -EFAULT;
844
845                 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
846                 if (io_remap_pfn_range(vma, vma->vm_start,
847                                 (nesdev->doorbell_start +
848                                 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
849                                 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
850                         return -EAGAIN;
851                 vma->vm_private_data = nes_ucontext;
852                 return 0;
853         }
854
855         return -ENOSYS;
856 }
857
858
859 /**
860  * nes_alloc_pd
861  */
862 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
863                 struct ib_ucontext *context, struct ib_udata *udata)
864 {
865         struct nes_pd *nespd;
866         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
867         struct nes_device *nesdev = nesvnic->nesdev;
868         struct nes_adapter *nesadapter = nesdev->nesadapter;
869         struct nes_ucontext *nesucontext;
870         struct nes_alloc_pd_resp uresp;
871         u32 pd_num = 0;
872         int err;
873
874         nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
875                         nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
876                         atomic_read(&nesvnic->netdev->refcnt));
877
878         err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
879                         nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
880         if (err) {
881                 return ERR_PTR(err);
882         }
883
884         nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
885         if (!nespd) {
886                 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
887                 return ERR_PTR(-ENOMEM);
888         }
889
890         nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
891                         nespd, nesvnic->nesibdev->ibdev.name);
892
893         nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
894
895         if (context) {
896                 nesucontext = to_nesucontext(context);
897                 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
898                                 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
899                 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
900                                 nespd->mmap_db_index, nespd->pd_id);
901                 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
902                         nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
903                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
904                         kfree(nespd);
905                         return ERR_PTR(-ENOMEM);
906                 }
907
908                 uresp.pd_id = nespd->pd_id;
909                 uresp.mmap_db_index = nespd->mmap_db_index;
910                 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
911                         nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
912                         kfree(nespd);
913                         return ERR_PTR(-EFAULT);
914                 }
915
916                 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
917                 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
918                 nesucontext->first_free_db = nespd->mmap_db_index + 1;
919         }
920
921         nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
922         return &nespd->ibpd;
923 }
924
925
926 /**
927  * nes_dealloc_pd
928  */
929 static int nes_dealloc_pd(struct ib_pd *ibpd)
930 {
931         struct nes_ucontext *nesucontext;
932         struct nes_pd *nespd = to_nespd(ibpd);
933         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
934         struct nes_device *nesdev = nesvnic->nesdev;
935         struct nes_adapter *nesadapter = nesdev->nesadapter;
936
937         if ((ibpd->uobject) && (ibpd->uobject->context)) {
938                 nesucontext = to_nesucontext(ibpd->uobject->context);
939                 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
940                                 nespd->mmap_db_index);
941                 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
942                 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
943                 if (nesucontext->first_free_db > nespd->mmap_db_index) {
944                         nesucontext->first_free_db = nespd->mmap_db_index;
945                 }
946         }
947
948         nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
949                         nespd->pd_id, nespd);
950         nes_free_resource(nesadapter, nesadapter->allocated_pds,
951                         (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
952         kfree(nespd);
953
954         return 0;
955 }
956
957
958 /**
959  * nes_create_ah
960  */
961 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
962 {
963         return ERR_PTR(-ENOSYS);
964 }
965
966
967 /**
968  * nes_destroy_ah
969  */
970 static int nes_destroy_ah(struct ib_ah *ah)
971 {
972         return -ENOSYS;
973 }
974
975
976 /**
977  * nes_get_encoded_size
978  */
979 static inline u8 nes_get_encoded_size(int *size)
980 {
981         u8 encoded_size = 0;
982         if (*size <= 32) {
983                 *size = 32;
984                 encoded_size = 1;
985         } else if (*size <= 128) {
986                 *size = 128;
987                 encoded_size = 2;
988         } else if (*size <= 512) {
989                 *size = 512;
990                 encoded_size = 3;
991         }
992         return (encoded_size);
993 }
994
995
996
997 /**
998  * nes_setup_virt_qp
999  */
1000 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
1001                 struct nes_vnic *nesvnic, int sq_size, int rq_size)
1002 {
1003         unsigned long flags;
1004         void *mem;
1005         __le64 *pbl = NULL;
1006         __le64 *tpbl;
1007         __le64 *pblbuffer;
1008         struct nes_device *nesdev = nesvnic->nesdev;
1009         struct nes_adapter *nesadapter = nesdev->nesadapter;
1010         u32 pbl_entries;
1011         u8 rq_pbl_entries;
1012         u8 sq_pbl_entries;
1013
1014         pbl_entries = nespbl->pbl_size >> 3;
1015         nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
1016                         nespbl->pbl_size, pbl_entries,
1017                         (void *)nespbl->pbl_vbase,
1018                         (unsigned long) nespbl->pbl_pbase);
1019         pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
1020         /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
1021         /* the first pbl to be fro the rq_vbase... */
1022         rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1023         sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1024         nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1025         if (!nespbl->page) {
1026                 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1027                 kfree(nespbl);
1028                 return -ENOMEM;
1029         }
1030
1031         nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1032         nesqp->page = nespbl->page;
1033         if (!nesqp->hwqp.sq_vbase) {
1034                 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1035                 kfree(nespbl);
1036                 return -ENOMEM;
1037         }
1038
1039         /* Now to get to sq.. we need to calculate how many */
1040         /* PBL entries were used by the rq.. */
1041         pbl += sq_pbl_entries;
1042         nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1043         /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1044         /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1045
1046         nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1047                   nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1048                   nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
1049         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1050         if (!nesadapter->free_256pbl) {
1051                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1052                                 nespbl->pbl_pbase);
1053                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1054                 kunmap(nesqp->page);
1055                 kfree(nespbl);
1056                 return -ENOMEM;
1057         }
1058         nesadapter->free_256pbl--;
1059         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1060
1061         nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1062         pblbuffer = nesqp->pbl_vbase;
1063         if (!nesqp->pbl_vbase) {
1064                 /* memory allocated during nes_reg_user_mr() */
1065                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1066                                     nespbl->pbl_pbase);
1067                 kfree(nespbl);
1068                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1069                 nesadapter->free_256pbl++;
1070                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1071                 kunmap(nesqp->page);
1072                 return -ENOMEM;
1073         }
1074         memset(nesqp->pbl_vbase, 0, 256);
1075         /* fill in the page address in the pbl buffer.. */
1076         tpbl = pblbuffer + 16;
1077         pbl = (__le64 *)nespbl->pbl_vbase;
1078         while (sq_pbl_entries--)
1079                 *tpbl++ = *pbl++;
1080         tpbl = pblbuffer;
1081         while (rq_pbl_entries--)
1082                 *tpbl++ = *pbl++;
1083
1084         /* done with memory allocated during nes_reg_user_mr() */
1085         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1086                             nespbl->pbl_pbase);
1087         kfree(nespbl);
1088
1089         nesqp->qp_mem_size =
1090                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256;     /* this is Q2 */
1091         /* Round up to a multiple of a page */
1092         nesqp->qp_mem_size += PAGE_SIZE - 1;
1093         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1094
1095         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1096                         &nesqp->hwqp.q2_pbase);
1097
1098         if (!mem) {
1099                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1100                 nesqp->pbl_vbase = NULL;
1101                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1102                 nesadapter->free_256pbl++;
1103                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1104                 kunmap(nesqp->page);
1105                 return -ENOMEM;
1106         }
1107         nesqp->hwqp.q2_vbase = mem;
1108         mem += 256;
1109         memset(nesqp->hwqp.q2_vbase, 0, 256);
1110         nesqp->nesqp_context = mem;
1111         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1112         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1113
1114         return 0;
1115 }
1116
1117
1118 /**
1119  * nes_setup_mmap_qp
1120  */
1121 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1122                 int sq_size, int rq_size)
1123 {
1124         void *mem;
1125         struct nes_device *nesdev = nesvnic->nesdev;
1126
1127         nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1128                         (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1129                         max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1130                         256; /* this is Q2 */
1131         /* Round up to a multiple of a page */
1132         nesqp->qp_mem_size += PAGE_SIZE - 1;
1133         nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1134
1135         mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1136                         &nesqp->hwqp.sq_pbase);
1137         if (!mem)
1138                 return -ENOMEM;
1139         nes_debug(NES_DBG_QP, "PCI consistent memory for "
1140                         "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1141                         mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1142
1143         memset(mem, 0, nesqp->qp_mem_size);
1144
1145         nesqp->hwqp.sq_vbase = mem;
1146         mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1147
1148         nesqp->hwqp.rq_vbase = mem;
1149         nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1150                         sizeof(struct nes_hw_qp_wqe) * sq_size;
1151         mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1152
1153         nesqp->hwqp.q2_vbase = mem;
1154         nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1155                         sizeof(struct nes_hw_qp_wqe) * rq_size;
1156         mem += 256;
1157         memset(nesqp->hwqp.q2_vbase, 0, 256);
1158
1159         nesqp->nesqp_context = mem;
1160         nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1161         memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1162         return 0;
1163 }
1164
1165
1166 /**
1167  * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1168  */
1169 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1170                 struct nes_qp *nesqp, int virt_wqs)
1171 {
1172         unsigned long flags;
1173         struct nes_adapter *nesadapter = nesdev->nesadapter;
1174         if (!virt_wqs) {
1175                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1176                                 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1177         }else {
1178                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1179                 nesadapter->free_256pbl++;
1180                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1181                 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1182                 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1183                 nesqp->pbl_vbase = NULL;
1184                 kunmap(nesqp->page);
1185         }
1186 }
1187
1188
1189 /**
1190  * nes_create_qp
1191  */
1192 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1193                 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1194 {
1195         u64 u64temp= 0;
1196         u64 u64nesqp = 0;
1197         struct nes_pd *nespd = to_nespd(ibpd);
1198         struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1199         struct nes_device *nesdev = nesvnic->nesdev;
1200         struct nes_adapter *nesadapter = nesdev->nesadapter;
1201         struct nes_qp *nesqp;
1202         struct nes_cq *nescq;
1203         struct nes_ucontext *nes_ucontext;
1204         struct nes_hw_cqp_wqe *cqp_wqe;
1205         struct nes_cqp_request *cqp_request;
1206         struct nes_create_qp_req req;
1207         struct nes_create_qp_resp uresp;
1208         struct nes_pbl  *nespbl = NULL;
1209         u32 qp_num = 0;
1210         u32 opcode = 0;
1211         /* u32 counter = 0; */
1212         void *mem;
1213         unsigned long flags;
1214         int ret;
1215         int err;
1216         int virt_wqs = 0;
1217         int sq_size;
1218         int rq_size;
1219         u8 sq_encoded_size;
1220         u8 rq_encoded_size;
1221         /* int counter; */
1222
1223         if (init_attr->create_flags)
1224                 return ERR_PTR(-EINVAL);
1225
1226         atomic_inc(&qps_created);
1227         switch (init_attr->qp_type) {
1228                 case IB_QPT_RC:
1229                         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1230                                 init_attr->cap.max_inline_data = 0;
1231                         } else {
1232                                 init_attr->cap.max_inline_data = 64;
1233                         }
1234                         sq_size = init_attr->cap.max_send_wr;
1235                         rq_size = init_attr->cap.max_recv_wr;
1236
1237                         /* check if the encoded sizes are OK or not... */
1238                         sq_encoded_size = nes_get_encoded_size(&sq_size);
1239                         rq_encoded_size = nes_get_encoded_size(&rq_size);
1240
1241                         if ((!sq_encoded_size) || (!rq_encoded_size)) {
1242                                 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1243                                                 rq_size, sq_size);
1244                                 return ERR_PTR(-EINVAL);
1245                         }
1246
1247                         init_attr->cap.max_send_wr = sq_size -2;
1248                         init_attr->cap.max_recv_wr = rq_size -1;
1249                         nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1250
1251                         ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1252                                         nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1253                         if (ret) {
1254                                 return ERR_PTR(ret);
1255                         }
1256
1257                         /* Need 512 (actually now 1024) byte alignment on this structure */
1258                         mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1259                         if (!mem) {
1260                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1261                                 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1262                                 return ERR_PTR(-ENOMEM);
1263                         }
1264                         u64nesqp = (unsigned long)mem;
1265                         u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1266                         u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1267                         u64nesqp &= ~u64temp;
1268                         nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1269                         /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p.  Rounded to closest %u\n",
1270                                         nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1271                         nesqp->allocated_buffer = mem;
1272
1273                         if (udata) {
1274                                 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1275                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1276                                         kfree(nesqp->allocated_buffer);
1277                                         nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1278                                         return NULL;
1279                                 }
1280                                 if (req.user_wqe_buffers) {
1281                                         virt_wqs = 1;
1282                                 }
1283                                 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1284                                         nesqp->user_mode = 1;
1285                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1286                                         if (virt_wqs) {
1287                                                 err = 1;
1288                                                 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1289                                                         if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1290                                                                 list_del(&nespbl->list);
1291                                                                 err = 0;
1292                                                                 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1293                                                                           nespbl, nespbl->user_base);
1294                                                                 break;
1295                                                         }
1296                                                 }
1297                                                 if (err) {
1298                                                         nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1299                                                                   (long long unsigned int)req.user_wqe_buffers);
1300                                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1301                                                         kfree(nesqp->allocated_buffer);
1302                                                         return ERR_PTR(-EFAULT);
1303                                                 }
1304                                         }
1305
1306                                         nes_ucontext = to_nesucontext(ibpd->uobject->context);
1307                                         nesqp->mmap_sq_db_index =
1308                                                 find_next_zero_bit(nes_ucontext->allocated_wqs,
1309                                                                    NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1310                                         /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1311                                                         nespd->mmap_db_index); */
1312                                         if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1313                                                 nes_debug(NES_DBG_QP,
1314                                                           "db index > max user regions, failing create QP\n");
1315                                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1316                                                 if (virt_wqs) {
1317                                                         pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1318                                                                             nespbl->pbl_pbase);
1319                                                         kfree(nespbl);
1320                                                 }
1321                                                 kfree(nesqp->allocated_buffer);
1322                                                 return ERR_PTR(-ENOMEM);
1323                                         }
1324                                         set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1325                                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1326                                         nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1327                                 } else {
1328                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1329                                         kfree(nesqp->allocated_buffer);
1330                                         return ERR_PTR(-EFAULT);
1331                                 }
1332                         }
1333                         err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1334                                         nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1335                         if (err) {
1336                                 nes_debug(NES_DBG_QP,
1337                                           "error geting qp mem code = %d\n", err);
1338                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1339                                 kfree(nesqp->allocated_buffer);
1340                                 return ERR_PTR(-ENOMEM);
1341                         }
1342
1343                         nesqp->hwqp.sq_size = sq_size;
1344                         nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1345                         nesqp->hwqp.sq_head = 1;
1346                         nesqp->hwqp.rq_size = rq_size;
1347                         nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1348                         /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1349                                         (void *)nesqp->nesqp_context_pbase);
1350                         */
1351                         nesqp->hwqp.qp_id = qp_num;
1352                         nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1353                         nesqp->nespd = nespd;
1354
1355                         nescq = to_nescq(init_attr->send_cq);
1356                         nesqp->nesscq = nescq;
1357                         nescq = to_nescq(init_attr->recv_cq);
1358                         nesqp->nesrcq = nescq;
1359
1360                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1361                                         NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1362                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1363                                         NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1364                         nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1365                                         NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1366                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1367                                 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1368                         nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1369                                         ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1370                         u64temp = (u64)nesqp->hwqp.sq_pbase;
1371                         nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1372                         nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1373
1374
1375                         if (!virt_wqs) {
1376                                 u64temp = (u64)nesqp->hwqp.sq_pbase;
1377                                 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1378                                 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1379                                 u64temp = (u64)nesqp->hwqp.rq_pbase;
1380                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1381                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1382                         } else {
1383                                 u64temp = (u64)nesqp->pbl_pbase;
1384                                 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1385                                 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1386                         }
1387
1388                         /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1389                                         nesvnic->next_qp_nic_index,
1390                                         nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1391                         spin_lock_irqsave(&nesdev->cqp.lock, flags);
1392                         nesqp->nesqp_context->misc2 |= cpu_to_le32(
1393                                         (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1394                                         NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1395                         nesvnic->next_qp_nic_index++;
1396                         if ((nesvnic->next_qp_nic_index > 3) ||
1397                                         (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1398                                 nesvnic->next_qp_nic_index = 0;
1399                         }
1400                         spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1401
1402                         nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1403                         u64temp = (u64)nesqp->hwqp.q2_pbase;
1404                         nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1405                         nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1406                         nesqp->nesqp_context->aeq_token_low =  cpu_to_le32((u32)((unsigned long)(nesqp)));
1407                         nesqp->nesqp_context->aeq_token_high =  cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1408                         nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1409                                         ((((u32)nesadapter->max_irrq_wr) <<
1410                                         NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1411                         if (disable_mpa_crc) {
1412                                 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1413                                 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1414                         }
1415
1416
1417                         /* Create the QP */
1418                         cqp_request = nes_get_cqp_request(nesdev);
1419                         if (cqp_request == NULL) {
1420                                 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1421                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1422                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1423                                 kfree(nesqp->allocated_buffer);
1424                                 return ERR_PTR(-ENOMEM);
1425                         }
1426                         cqp_request->waiting = 1;
1427                         cqp_wqe = &cqp_request->cqp_wqe;
1428
1429                         if (!virt_wqs) {
1430                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1431                                         NES_CQP_QP_IWARP_STATE_IDLE;
1432                         } else {
1433                                 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1434                                         NES_CQP_QP_IWARP_STATE_IDLE;
1435                         }
1436                         opcode |= NES_CQP_QP_CQS_VALID;
1437                         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1438                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1439                         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1440
1441                         u64temp = (u64)nesqp->nesqp_context_pbase;
1442                         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1443
1444                         atomic_set(&cqp_request->refcount, 2);
1445                         nes_post_cqp_request(nesdev, cqp_request);
1446
1447                         /* Wait for CQP */
1448                         nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1449                                         nesqp->hwqp.qp_id);
1450                         ret = wait_event_timeout(cqp_request->waitq,
1451                                         (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1452                         nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1453                                         " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1454                                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1455                                         nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1456                                         cqp_request->major_code, cqp_request->minor_code);
1457                         if ((!ret) || (cqp_request->major_code)) {
1458                                 nes_put_cqp_request(nesdev, cqp_request);
1459                                 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1460                                 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1461                                 kfree(nesqp->allocated_buffer);
1462                                 if (!ret) {
1463                                         return ERR_PTR(-ETIME);
1464                                 } else {
1465                                         return ERR_PTR(-EIO);
1466                                 }
1467                         }
1468
1469                         nes_put_cqp_request(nesdev, cqp_request);
1470
1471                         if (ibpd->uobject) {
1472                                 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1473                                 uresp.actual_sq_size = sq_size;
1474                                 uresp.actual_rq_size = rq_size;
1475                                 uresp.qp_id = nesqp->hwqp.qp_id;
1476                                 uresp.nes_drv_opt = nes_drv_opt;
1477                                 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1478                                         nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1479                                         nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1480                                         kfree(nesqp->allocated_buffer);
1481                                         return ERR_PTR(-EFAULT);
1482                                 }
1483                         }
1484
1485                         nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1486                                         nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1487                         spin_lock_init(&nesqp->lock);
1488                         init_waitqueue_head(&nesqp->state_waitq);
1489                         init_waitqueue_head(&nesqp->kick_waitq);
1490                         nes_add_ref(&nesqp->ibqp);
1491                         break;
1492                 default:
1493                         nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1494                         return ERR_PTR(-EINVAL);
1495         }
1496
1497         /* update the QP table */
1498         nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1499         nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1500                         atomic_read(&nesvnic->netdev->refcnt));
1501
1502         return &nesqp->ibqp;
1503 }
1504
1505
1506 /**
1507  * nes_destroy_qp
1508  */
1509 static int nes_destroy_qp(struct ib_qp *ibqp)
1510 {
1511         struct nes_qp *nesqp = to_nesqp(ibqp);
1512         /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
1513         struct nes_ucontext *nes_ucontext;
1514         struct ib_qp_attr attr;
1515         struct iw_cm_id *cm_id;
1516         struct iw_cm_event cm_event;
1517         int ret;
1518
1519         atomic_inc(&sw_qps_destroyed);
1520         nesqp->destroyed = 1;
1521
1522         /* Blow away the connection if it exists. */
1523         if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1524                 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1525                 attr.qp_state = IB_QPS_ERR;
1526                 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1527         }
1528
1529         if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1530                         (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1531                 cm_id = nesqp->cm_id;
1532                 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1533                 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1534                 cm_event.local_addr = cm_id->local_addr;
1535                 cm_event.remote_addr = cm_id->remote_addr;
1536                 cm_event.private_data = NULL;
1537                 cm_event.private_data_len = 0;
1538
1539                 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1540                                 "QP%u. cm_id = %p, refcount = %u. \n",
1541                                 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1542
1543                 cm_id->rem_ref(cm_id);
1544                 ret = cm_id->event_handler(cm_id, &cm_event);
1545                 if (ret)
1546                         nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1547         }
1548
1549
1550         if (nesqp->user_mode) {
1551                 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1552                         nes_ucontext = to_nesucontext(ibqp->uobject->context);
1553                         clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1554                         nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1555                         if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1556                                 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1557                         }
1558                 }
1559                 if (nesqp->pbl_pbase)
1560                         kunmap(nesqp->page);
1561         }
1562
1563         nes_rem_ref(&nesqp->ibqp);
1564         return 0;
1565 }
1566
1567
1568 /**
1569  * nes_create_cq
1570  */
1571 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1572                 int comp_vector,
1573                 struct ib_ucontext *context, struct ib_udata *udata)
1574 {
1575         u64 u64temp;
1576         struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1577         struct nes_device *nesdev = nesvnic->nesdev;
1578         struct nes_adapter *nesadapter = nesdev->nesadapter;
1579         struct nes_cq *nescq;
1580         struct nes_ucontext *nes_ucontext = NULL;
1581         struct nes_cqp_request *cqp_request;
1582         void *mem = NULL;
1583         struct nes_hw_cqp_wqe *cqp_wqe;
1584         struct nes_pbl *nespbl = NULL;
1585         struct nes_create_cq_req req;
1586         struct nes_create_cq_resp resp;
1587         u32 cq_num = 0;
1588         u32 opcode = 0;
1589         u32 pbl_entries = 1;
1590         int err;
1591         unsigned long flags;
1592         int ret;
1593
1594         err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1595                         nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1596         if (err) {
1597                 return ERR_PTR(err);
1598         }
1599
1600         nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1601         if (!nescq) {
1602                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1603                 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1604                 return ERR_PTR(-ENOMEM);
1605         }
1606
1607         nescq->hw_cq.cq_size = max(entries + 1, 5);
1608         nescq->hw_cq.cq_number = cq_num;
1609         nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1610
1611
1612         if (context) {
1613                 nes_ucontext = to_nesucontext(context);
1614                 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1615                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1616                         kfree(nescq);
1617                         return ERR_PTR(-EFAULT);
1618                 }
1619                 nesvnic->mcrq_ucontext = nes_ucontext;
1620                 nes_ucontext->mcrqf = req.mcrqf;
1621                 if (nes_ucontext->mcrqf) {
1622                         if (nes_ucontext->mcrqf & 0x80000000)
1623                                 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1624                         else if (nes_ucontext->mcrqf & 0x40000000)
1625                                 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1626                         else
1627                                 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1628                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1629                 }
1630                 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1631                                 (unsigned long)req.user_cq_buffer, entries);
1632                 err = 1;
1633                 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1634                         if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1635                                 list_del(&nespbl->list);
1636                                 err = 0;
1637                                 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1638                                                 nespbl);
1639                                 break;
1640                         }
1641                 }
1642                 if (err) {
1643                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1644                         kfree(nescq);
1645                         return ERR_PTR(-EFAULT);
1646                 }
1647
1648                 pbl_entries = nespbl->pbl_size >> 3;
1649                 nescq->cq_mem_size = 0;
1650         } else {
1651                 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1652                 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1653                                 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1654
1655                 /* allocate the physical buffer space */
1656                 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1657                                 &nescq->hw_cq.cq_pbase);
1658                 if (!mem) {
1659                         printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1660                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1661                         kfree(nescq);
1662                         return ERR_PTR(-ENOMEM);
1663                 }
1664
1665                 memset(mem, 0, nescq->cq_mem_size);
1666                 nescq->hw_cq.cq_vbase = mem;
1667                 nescq->hw_cq.cq_head = 0;
1668                 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1669                                 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1670                                 (u32)nescq->hw_cq.cq_pbase);
1671         }
1672
1673         nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1674         spin_lock_init(&nescq->lock);
1675
1676         /* send CreateCQ request to CQP */
1677         cqp_request = nes_get_cqp_request(nesdev);
1678         if (cqp_request == NULL) {
1679                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1680                 if (!context)
1681                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1682                                         nescq->hw_cq.cq_pbase);
1683                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1684                 kfree(nescq);
1685                 return ERR_PTR(-ENOMEM);
1686         }
1687         cqp_request->waiting = 1;
1688         cqp_wqe = &cqp_request->cqp_wqe;
1689
1690         opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1691                         NES_CQP_CQ_CHK_OVERFLOW |
1692                         NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1693
1694         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1695
1696         if (pbl_entries != 1) {
1697                 if (pbl_entries > 32) {
1698                         /* use 4k pbl */
1699                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1700                         if (nesadapter->free_4kpbl == 0) {
1701                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1702                                 nes_free_cqp_request(nesdev, cqp_request);
1703                                 if (!context)
1704                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1705                                                         nescq->hw_cq.cq_pbase);
1706                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1707                                 kfree(nescq);
1708                                 return ERR_PTR(-ENOMEM);
1709                         } else {
1710                                 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1711                                 nescq->virtual_cq = 2;
1712                                 nesadapter->free_4kpbl--;
1713                         }
1714                 } else {
1715                         /* use 256 byte pbl */
1716                         nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1717                         if (nesadapter->free_256pbl == 0) {
1718                                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1719                                 nes_free_cqp_request(nesdev, cqp_request);
1720                                 if (!context)
1721                                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1722                                                         nescq->hw_cq.cq_pbase);
1723                                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1724                                 kfree(nescq);
1725                                 return ERR_PTR(-ENOMEM);
1726                         } else {
1727                                 opcode |= NES_CQP_CQ_VIRT;
1728                                 nescq->virtual_cq = 1;
1729                                 nesadapter->free_256pbl--;
1730                         }
1731                 }
1732         }
1733
1734         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1735
1736         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1737         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1738         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1739                         (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1740
1741         if (context) {
1742                 if (pbl_entries != 1)
1743                         u64temp = (u64)nespbl->pbl_pbase;
1744                 else
1745                         u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1746                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1747                                 nes_ucontext->mmap_db_index[0]);
1748         } else {
1749                 u64temp = (u64)nescq->hw_cq.cq_pbase;
1750                 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1751         }
1752         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1753         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1754         u64temp = (u64)(unsigned long)&nescq->hw_cq;
1755         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1756                         cpu_to_le32((u32)(u64temp >> 1));
1757         cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1758                         cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1759
1760         atomic_set(&cqp_request->refcount, 2);
1761         nes_post_cqp_request(nesdev, cqp_request);
1762
1763         /* Wait for CQP */
1764         nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1765                         nescq->hw_cq.cq_number);
1766         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1767                         NES_EVENT_TIMEOUT * 2);
1768         nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1769                         nescq->hw_cq.cq_number, ret);
1770         if ((!ret) || (cqp_request->major_code)) {
1771                 nes_put_cqp_request(nesdev, cqp_request);
1772                 if (!context)
1773                         pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1774                                         nescq->hw_cq.cq_pbase);
1775                 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1776                 kfree(nescq);
1777                 return ERR_PTR(-EIO);
1778         }
1779         nes_put_cqp_request(nesdev, cqp_request);
1780
1781         if (context) {
1782                 /* free the nespbl */
1783                 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1784                                 nespbl->pbl_pbase);
1785                 kfree(nespbl);
1786                 resp.cq_id = nescq->hw_cq.cq_number;
1787                 resp.cq_size = nescq->hw_cq.cq_size;
1788                 resp.mmap_db_index = 0;
1789                 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1790                         nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1791                         kfree(nescq);
1792                         return ERR_PTR(-EFAULT);
1793                 }
1794         }
1795
1796         return &nescq->ibcq;
1797 }
1798
1799
1800 /**
1801  * nes_destroy_cq
1802  */
1803 static int nes_destroy_cq(struct ib_cq *ib_cq)
1804 {
1805         struct nes_cq *nescq;
1806         struct nes_device *nesdev;
1807         struct nes_vnic *nesvnic;
1808         struct nes_adapter *nesadapter;
1809         struct nes_hw_cqp_wqe *cqp_wqe;
1810         struct nes_cqp_request *cqp_request;
1811         unsigned long flags;
1812         u32 opcode = 0;
1813         int ret;
1814
1815         if (ib_cq == NULL)
1816                 return 0;
1817
1818         nescq = to_nescq(ib_cq);
1819         nesvnic = to_nesvnic(ib_cq->device);
1820         nesdev = nesvnic->nesdev;
1821         nesadapter = nesdev->nesadapter;
1822
1823         nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1824
1825         /* Send DestroyCQ request to CQP */
1826         cqp_request = nes_get_cqp_request(nesdev);
1827         if (cqp_request == NULL) {
1828                 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1829                 return -ENOMEM;
1830         }
1831         cqp_request->waiting = 1;
1832         cqp_wqe = &cqp_request->cqp_wqe;
1833         opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1834         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1835         if (nescq->virtual_cq == 1) {
1836                 nesadapter->free_256pbl++;
1837                 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1838                         printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1839                                         __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1840                 }
1841         } else if (nescq->virtual_cq == 2) {
1842                 nesadapter->free_4kpbl++;
1843                 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1844                         printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1845                                         __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1846                 }
1847                 opcode |= NES_CQP_CQ_4KB_CHUNK;
1848         }
1849
1850         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1851
1852         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1853         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1854         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1855                 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1856         nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1857         atomic_set(&cqp_request->refcount, 2);
1858         nes_post_cqp_request(nesdev, cqp_request);
1859
1860         /* Wait for CQP */
1861         nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1862                         nescq->hw_cq.cq_number);
1863         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1864                         NES_EVENT_TIMEOUT);
1865         nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1866                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1867                         nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1868                         cqp_request->minor_code);
1869         if (!ret) {
1870                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1871                                         nescq->hw_cq.cq_number);
1872                 ret = -ETIME;
1873         } else if (cqp_request->major_code) {
1874                 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1875                                         nescq->hw_cq.cq_number);
1876                 ret = -EIO;
1877         } else {
1878                 ret = 0;
1879         }
1880         nes_put_cqp_request(nesdev, cqp_request);
1881
1882         if (nescq->cq_mem_size)
1883                 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1884                                     nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1885         kfree(nescq);
1886
1887         return ret;
1888 }
1889
1890 /**
1891  * root_256
1892  */
1893 static u32 root_256(struct nes_device *nesdev,
1894                     struct nes_root_vpbl *root_vpbl,
1895                     struct nes_root_vpbl *new_root,
1896                     u16 pbl_count_4k,
1897                     u16 pbl_count_256)
1898 {
1899         u64 leaf_pbl;
1900         int i, j, k;
1901
1902         if (pbl_count_4k == 1) {
1903                 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1904                                                 512, &new_root->pbl_pbase);
1905
1906                 if (new_root->pbl_vbase == NULL)
1907                         return 0;
1908
1909                 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1910                 for (i = 0; i < 16; i++) {
1911                         new_root->pbl_vbase[i].pa_low =
1912                                 cpu_to_le32((u32)leaf_pbl);
1913                         new_root->pbl_vbase[i].pa_high =
1914                                 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1915                         leaf_pbl += 256;
1916                 }
1917         } else {
1918                 for (i = 3; i >= 0; i--) {
1919                         j = i * 16;
1920                         root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1921                         leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1922                             (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1923                                 << 32);
1924                         for (k = 1; k < 16; k++) {
1925                                 leaf_pbl += 256;
1926                                 root_vpbl->pbl_vbase[j + k].pa_low =
1927                                                 cpu_to_le32((u32)leaf_pbl);
1928                                 root_vpbl->pbl_vbase[j + k].pa_high =
1929                                     cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1930                         }
1931                 }
1932         }
1933
1934         return 1;
1935 }
1936
1937
1938 /**
1939  * nes_reg_mr
1940  */
1941 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1942                 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1943                 dma_addr_t single_buffer, u16 pbl_count_4k,
1944                 u16 residual_page_count_4k, int acc, u64 *iova_start,
1945                 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1946 {
1947         struct nes_hw_cqp_wqe *cqp_wqe;
1948         struct nes_cqp_request *cqp_request;
1949         unsigned long flags;
1950         int ret;
1951         struct nes_adapter *nesadapter = nesdev->nesadapter;
1952         uint pg_cnt = 0;
1953         u16 pbl_count_256;
1954         u16 pbl_count = 0;
1955         u8  use_256_pbls = 0;
1956         u8  use_4k_pbls = 0;
1957         u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1958         struct nes_root_vpbl new_root = {0, 0, 0};
1959         u32 opcode = 0;
1960         u16 major_code;
1961
1962         /* Register the region with the adapter */
1963         cqp_request = nes_get_cqp_request(nesdev);
1964         if (cqp_request == NULL) {
1965                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1966                 return -ENOMEM;
1967         }
1968         cqp_request->waiting = 1;
1969         cqp_wqe = &cqp_request->cqp_wqe;
1970
1971         if (pbl_count_4k) {
1972                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1973
1974                 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1975                 pbl_count_256 = (pg_cnt + 31) / 32;
1976                 if (pg_cnt <= 32) {
1977                         if (pbl_count_256 <= nesadapter->free_256pbl)
1978                                 use_256_pbls = 1;
1979                         else if (pbl_count_4k <= nesadapter->free_4kpbl)
1980                                 use_4k_pbls = 1;
1981                 } else if (pg_cnt <= 2048) {
1982                         if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1983                             (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1984                                 use_4k_pbls = 1;
1985                         } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1986                                 use_256_pbls = 1;
1987                                 use_two_level = 1;
1988                         } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1989                                 use_4k_pbls = 1;
1990                         }
1991                 } else {
1992                         if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1993                                 use_4k_pbls = 1;
1994                 }
1995
1996                 if (use_256_pbls) {
1997                         pbl_count = pbl_count_256;
1998                         nesadapter->free_256pbl -= pbl_count + use_two_level;
1999                 } else if (use_4k_pbls) {
2000                         pbl_count =  pbl_count_4k;
2001                         nesadapter->free_4kpbl -= pbl_count + use_two_level;
2002                 } else {
2003                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2004                         nes_debug(NES_DBG_MR, "Out of Pbls\n");
2005                         nes_free_cqp_request(nesdev, cqp_request);
2006                         return -ENOMEM;
2007                 }
2008
2009                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2010         }
2011
2012         if (use_256_pbls && use_two_level) {
2013                 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k, pbl_count_256) == 1) {
2014                         if (new_root.pbl_pbase != 0)
2015                                 root_vpbl = &new_root;
2016                 } else {
2017                         spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2018                         nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2019                         use_256_pbls = 0;
2020
2021                         if (pbl_count_4k == 1)
2022                                 use_two_level = 0;
2023                         pbl_count = pbl_count_4k;
2024
2025                         if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2026                                 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2027                                 use_4k_pbls = 1;
2028                         }
2029                         spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2030
2031                         if (use_4k_pbls == 0)
2032                                 return -ENOMEM;
2033                 }
2034         }
2035
2036         opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2037                                         NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2038         if (acc & IB_ACCESS_LOCAL_WRITE)
2039                 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2040         if (acc & IB_ACCESS_REMOTE_WRITE)
2041                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2042         if (acc & IB_ACCESS_REMOTE_READ)
2043                 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2044         if (acc & IB_ACCESS_MW_BIND)
2045                 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2046
2047         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2048         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2049         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2050         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2051
2052         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2053                         cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2054         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2055                         cpu_to_le32(nespd->pd_id & 0x00007fff);
2056         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2057
2058         if (pbl_count == 0) {
2059                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2060         } else {
2061                 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2062                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2063                 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2064
2065                 if (use_4k_pbls)
2066                         cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2067         }
2068         barrier();
2069
2070         atomic_set(&cqp_request->refcount, 2);
2071         nes_post_cqp_request(nesdev, cqp_request);
2072
2073         /* Wait for CQP */
2074         ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2075                         NES_EVENT_TIMEOUT);
2076         nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2077                         " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2078                         stag, ret, cqp_request->major_code, cqp_request->minor_code);
2079         major_code = cqp_request->major_code;
2080         nes_put_cqp_request(nesdev, cqp_request);
2081
2082         if ((!ret || major_code) && pbl_count != 0) {
2083                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2084                 if (use_256_pbls)
2085                         nesadapter->free_256pbl += pbl_count + use_two_level;
2086                 else if (use_4k_pbls)
2087                         nesadapter->free_4kpbl += pbl_count + use_two_level;
2088                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2089         }
2090         if (new_root.pbl_pbase)
2091                 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2092                                     new_root.pbl_pbase);
2093
2094         if (!ret)
2095                 return -ETIME;
2096         else if (major_code)
2097                 return -EIO;
2098
2099         *actual_pbl_cnt = pbl_count + use_two_level;
2100         *used_4k_pbls = use_4k_pbls;
2101         return 0;
2102 }
2103
2104
2105 /**
2106  * nes_reg_phys_mr
2107  */
2108 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2109                 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2110                 u64 * iova_start)
2111 {
2112         u64 region_length;
2113         struct nes_pd *nespd = to_nespd(ib_pd);
2114         struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2115         struct nes_device *nesdev = nesvnic->nesdev;
2116         struct nes_adapter *nesadapter = nesdev->nesadapter;
2117         struct nes_mr *nesmr;
2118         struct ib_mr *ibmr;
2119         struct nes_vpbl vpbl;
2120         struct nes_root_vpbl root_vpbl;
2121         u32 stag;
2122         u32 i;
2123         u32 stag_index = 0;
2124         u32 next_stag_index = 0;
2125         u32 driver_key = 0;
2126         u32 root_pbl_index = 0;
2127         u32 cur_pbl_index = 0;
2128         int err = 0, pbl_depth = 0;
2129         int ret = 0;
2130         u16 pbl_count = 0;
2131         u8 single_page = 1;
2132         u8 stag_key = 0;
2133
2134         pbl_depth = 0;
2135         region_length = 0;
2136         vpbl.pbl_vbase = NULL;
2137         root_vpbl.pbl_vbase = NULL;
2138         root_vpbl.pbl_pbase = 0;
2139
2140         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2141         stag_key = (u8)next_stag_index;
2142
2143         driver_key = 0;
2144
2145         next_stag_index >>= 8;
2146         next_stag_index %= nesadapter->max_mr;
2147         if (num_phys_buf > (1024*512)) {
2148                 return ERR_PTR(-E2BIG);
2149         }
2150
2151         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2152                         &stag_index, &next_stag_index);
2153         if (err) {
2154                 return ERR_PTR(err);
2155         }
2156
2157         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2158         if (!nesmr) {
2159                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2160                 return ERR_PTR(-ENOMEM);
2161         }
2162
2163         for (i = 0; i < num_phys_buf; i++) {
2164
2165                 if ((i & 0x01FF) == 0) {
2166                         if (root_pbl_index == 1) {
2167                                 /* Allocate the root PBL */
2168                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2169                                                 &root_vpbl.pbl_pbase);
2170                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2171                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2172                                 if (!root_vpbl.pbl_vbase) {
2173                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2174                                                         vpbl.pbl_pbase);
2175                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2176                                         kfree(nesmr);
2177                                         return ERR_PTR(-ENOMEM);
2178                                 }
2179                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2180                                 if (!root_vpbl.leaf_vpbl) {
2181                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2182                                                         root_vpbl.pbl_pbase);
2183                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2184                                                         vpbl.pbl_pbase);
2185                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2186                                         kfree(nesmr);
2187                                         return ERR_PTR(-ENOMEM);
2188                                 }
2189                                 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2190                                 root_vpbl.pbl_vbase[0].pa_high =
2191                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2192                                 root_vpbl.leaf_vpbl[0] = vpbl;
2193                         }
2194                         /* Allocate a 4K buffer for the PBL */
2195                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2196                                         &vpbl.pbl_pbase);
2197                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2198                                         vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2199                         if (!vpbl.pbl_vbase) {
2200                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2201                                 ibmr = ERR_PTR(-ENOMEM);
2202                                 kfree(nesmr);
2203                                 goto reg_phys_err;
2204                         }
2205                         /* Fill in the root table */
2206                         if (1 <= root_pbl_index) {
2207                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2208                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2209                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2210                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2211                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2212                         }
2213                         root_pbl_index++;
2214                         cur_pbl_index = 0;
2215                 }
2216                 if (buffer_list[i].addr & ~PAGE_MASK) {
2217                         /* TODO: Unwind allocated buffers */
2218                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2219                         nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2220                                         (unsigned int) buffer_list[i].addr);
2221                         ibmr = ERR_PTR(-EINVAL);
2222                         kfree(nesmr);
2223                         goto reg_phys_err;
2224                 }
2225
2226                 if (!buffer_list[i].size) {
2227                         nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2228                         nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2229                         ibmr = ERR_PTR(-EINVAL);
2230                         kfree(nesmr);
2231                         goto reg_phys_err;
2232                 }
2233
2234                 region_length += buffer_list[i].size;
2235                 if ((i != 0) && (single_page)) {
2236                         if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2237                                 single_page = 0;
2238                 }
2239                 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr);
2240                 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2241                                 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2242         }
2243
2244         stag = stag_index << 8;
2245         stag |= driver_key;
2246         stag += (u32)stag_key;
2247
2248         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2249                         " length = 0x%016lX, index = 0x%08X\n",
2250                         stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2251
2252         region_length -= (*iova_start)&PAGE_MASK;
2253
2254         /* Make the leaf PBL the root if only one PBL */
2255         if (root_pbl_index == 1) {
2256                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2257         }
2258
2259         if (single_page) {
2260                 pbl_count = 0;
2261         } else {
2262                 pbl_count = root_pbl_index;
2263         }
2264         ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2265                         buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2266                         &nesmr->pbls_used, &nesmr->pbl_4k);
2267
2268         if (ret == 0) {
2269                 nesmr->ibmr.rkey = stag;
2270                 nesmr->ibmr.lkey = stag;
2271                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2272                 ibmr = &nesmr->ibmr;
2273         } else {
2274                 kfree(nesmr);
2275                 ibmr = ERR_PTR(-ENOMEM);
2276         }
2277
2278         reg_phys_err:
2279         /* free the resources */
2280         if (root_pbl_index == 1) {
2281                 /* single PBL case */
2282                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2283         } else {
2284                 for (i=0; i<root_pbl_index; i++) {
2285                         pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2286                                         root_vpbl.leaf_vpbl[i].pbl_pbase);
2287                 }
2288                 kfree(root_vpbl.leaf_vpbl);
2289                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2290                                 root_vpbl.pbl_pbase);
2291         }
2292
2293         return ibmr;
2294 }
2295
2296
2297 /**
2298  * nes_get_dma_mr
2299  */
2300 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2301 {
2302         struct ib_phys_buf bl;
2303         u64 kva = 0;
2304
2305         nes_debug(NES_DBG_MR, "\n");
2306
2307         bl.size = (u64)0xffffffffffULL;
2308         bl.addr = 0;
2309         return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2310 }
2311
2312
2313 /**
2314  * nes_reg_user_mr
2315  */
2316 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2317                 u64 virt, int acc, struct ib_udata *udata)
2318 {
2319         u64 iova_start;
2320         __le64 *pbl;
2321         u64 region_length;
2322         dma_addr_t last_dma_addr = 0;
2323         dma_addr_t first_dma_addr = 0;
2324         struct nes_pd *nespd = to_nespd(pd);
2325         struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2326         struct nes_device *nesdev = nesvnic->nesdev;
2327         struct nes_adapter *nesadapter = nesdev->nesadapter;
2328         struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2329         struct ib_umem_chunk *chunk;
2330         struct nes_ucontext *nes_ucontext;
2331         struct nes_pbl *nespbl;
2332         struct nes_mr *nesmr;
2333         struct ib_umem *region;
2334         struct nes_mem_reg_req req;
2335         struct nes_vpbl vpbl;
2336         struct nes_root_vpbl root_vpbl;
2337         int nmap_index, page_index;
2338         int page_count = 0;
2339         int err, pbl_depth = 0;
2340         int chunk_pages;
2341         int ret;
2342         u32 stag;
2343         u32 stag_index = 0;
2344         u32 next_stag_index;
2345         u32 driver_key;
2346         u32 root_pbl_index = 0;
2347         u32 cur_pbl_index = 0;
2348         u32 skip_pages;
2349         u16 pbl_count;
2350         u8 single_page = 1;
2351         u8 stag_key;
2352
2353         region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2354         if (IS_ERR(region)) {
2355                 return (struct ib_mr *)region;
2356         }
2357
2358         nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2359                         " offset = %u, page size = %u.\n",
2360                         (unsigned long int)start, (unsigned long int)virt, (u32)length,
2361                         region->offset, region->page_size);
2362
2363         skip_pages = ((u32)region->offset) >> 12;
2364
2365         if (ib_copy_from_udata(&req, udata, sizeof(req)))
2366                 return ERR_PTR(-EFAULT);
2367         nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2368
2369         switch (req.reg_type) {
2370                 case IWNES_MEMREG_TYPE_MEM:
2371                         pbl_depth = 0;
2372                         region_length = 0;
2373                         vpbl.pbl_vbase = NULL;
2374                         root_vpbl.pbl_vbase = NULL;
2375                         root_vpbl.pbl_pbase = 0;
2376
2377                         get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2378                         stag_key = (u8)next_stag_index;
2379
2380                         driver_key = next_stag_index & 0x70000000;
2381
2382                         next_stag_index >>= 8;
2383                         next_stag_index %= nesadapter->max_mr;
2384
2385                         err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2386                                         nesadapter->max_mr, &stag_index, &next_stag_index);
2387                         if (err) {
2388                                 ib_umem_release(region);
2389                                 return ERR_PTR(err);
2390                         }
2391
2392                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2393                         if (!nesmr) {
2394                                 ib_umem_release(region);
2395                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2396                                 return ERR_PTR(-ENOMEM);
2397                         }
2398                         nesmr->region = region;
2399
2400                         list_for_each_entry(chunk, &region->chunk_list, list) {
2401                                 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2402                                                 chunk->nents, chunk->nmap);
2403                                 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2404                                         if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2405                                                 ib_umem_release(region);
2406                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2407                                                 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2408                                                                 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2409                                                 ibmr = ERR_PTR(-EINVAL);
2410                                                 kfree(nesmr);
2411                                                 goto reg_user_mr_err;
2412                                         }
2413
2414                                         if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2415                                                 ib_umem_release(region);
2416                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2417                                                                 stag_index);
2418                                                 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2419                                                 ibmr = ERR_PTR(-EINVAL);
2420                                                 kfree(nesmr);
2421                                                 goto reg_user_mr_err;
2422                                         }
2423
2424                                         region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2425                                         chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2426                                         region_length -= skip_pages << 12;
2427                                         for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2428                                                 skip_pages = 0;
2429                                                 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2430                                                         goto enough_pages;
2431                                                 if ((page_count&0x01FF) == 0) {
2432                                                         if (page_count >= 1024 * 512) {
2433                                                                 ib_umem_release(region);
2434                                                                 nes_free_resource(nesadapter,
2435                                                                                 nesadapter->allocated_mrs, stag_index);
2436                                                                 kfree(nesmr);
2437                                                                 ibmr = ERR_PTR(-E2BIG);
2438                                                                 goto reg_user_mr_err;
2439                                                         }
2440                                                         if (root_pbl_index == 1) {
2441                                                                 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2442                                                                                 8192, &root_vpbl.pbl_pbase);
2443                                                                 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2444                                                                                 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2445                                                                 if (!root_vpbl.pbl_vbase) {
2446                                                                         ib_umem_release(region);
2447                                                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2448                                                                                         vpbl.pbl_pbase);
2449                                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2450                                                                                         stag_index);
2451                                                                         kfree(nesmr);
2452                                                                         ibmr = ERR_PTR(-ENOMEM);
2453                                                                         goto reg_user_mr_err;
2454                                                                 }
2455                                                                 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2456                                                                                 GFP_KERNEL);
2457                                                                 if (!root_vpbl.leaf_vpbl) {
2458                                                                         ib_umem_release(region);
2459                                                                         pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2460                                                                                         root_vpbl.pbl_pbase);
2461                                                                         pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2462                                                                                         vpbl.pbl_pbase);
2463                                                                         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2464                                                                                         stag_index);
2465                                                                         kfree(nesmr);
2466                                                                         ibmr = ERR_PTR(-ENOMEM);
2467                                                                         goto reg_user_mr_err;
2468                                                                 }
2469                                                                 root_vpbl.pbl_vbase[0].pa_low =
2470                                                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2471                                                                 root_vpbl.pbl_vbase[0].pa_high =
2472                                                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2473                                                                 root_vpbl.leaf_vpbl[0] = vpbl;
2474                                                         }
2475                                                         vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2476                                                                         &vpbl.pbl_pbase);
2477                                                         nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2478                                                                         vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2479                                                         if (!vpbl.pbl_vbase) {
2480                                                                 ib_umem_release(region);
2481                                                                 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2482                                                                 ibmr = ERR_PTR(-ENOMEM);
2483                                                                 kfree(nesmr);
2484                                                                 goto reg_user_mr_err;
2485                                                         }
2486                                                         if (1 <= root_pbl_index) {
2487                                                                 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2488                                                                                 cpu_to_le32((u32)vpbl.pbl_pbase);
2489                                                                 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2490                                                                                 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2491                                                                 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2492                                                         }
2493                                                         root_pbl_index++;
2494                                                         cur_pbl_index = 0;
2495                                                 }
2496                                                 if (single_page) {
2497                                                         if (page_count != 0) {
2498                                                                 if ((last_dma_addr+4096) !=
2499                                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2500                                                                                 (page_index*4096)))
2501                                                                         single_page = 0;
2502                                                                 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2503                                                                                 (page_index*4096);
2504                                                         } else {
2505                                                                 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2506                                                                                 (page_index*4096);
2507                                                                 last_dma_addr = first_dma_addr;
2508                                                         }
2509                                                 }
2510
2511                                                 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2512                                                                 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2513                                                                 (page_index*4096)));
2514                                                 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2515                                                                 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2516                                                                 (page_index*4096))) >> 32)));
2517                                                 cur_pbl_index++;
2518                                                 page_count++;
2519                                         }
2520                                 }
2521                         }
2522                         enough_pages:
2523                         nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2524                                         " stag_key=0x%08x\n",
2525                                         stag_index, driver_key, stag_key);
2526                         stag = stag_index << 8;
2527                         stag |= driver_key;
2528                         stag += (u32)stag_key;
2529                         if (stag == 0) {
2530                                 stag = 1;
2531                         }
2532
2533                         iova_start = virt;
2534                         /* Make the leaf PBL the root if only one PBL */
2535                         if (root_pbl_index == 1) {
2536                                 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2537                         }
2538
2539                         if (single_page) {
2540                                 pbl_count = 0;
2541                         } else {
2542                                 pbl_count = root_pbl_index;
2543                                 first_dma_addr = 0;
2544                         }
2545                         nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2546                                         " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2547                                         stag, (unsigned int)iova_start,
2548                                         (unsigned int)region_length, stag_index,
2549                                         (unsigned long long)region->length, pbl_count);
2550                         ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2551                                          first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2552                                          &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2553
2554                         nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2555
2556                         if (ret == 0) {
2557                                 nesmr->ibmr.rkey = stag;
2558                                 nesmr->ibmr.lkey = stag;
2559                                 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2560                                 ibmr = &nesmr->ibmr;
2561                         } else {
2562                                 ib_umem_release(region);
2563                                 kfree(nesmr);
2564                                 ibmr = ERR_PTR(-ENOMEM);
2565                         }
2566
2567                         reg_user_mr_err:
2568                         /* free the resources */
2569                         if (root_pbl_index == 1) {
2570                                 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2571                                                 vpbl.pbl_pbase);
2572                         } else {
2573                                 for (page_index=0; page_index<root_pbl_index; page_index++) {
2574                                         pci_free_consistent(nesdev->pcidev, 4096,
2575                                                         root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2576                                                         root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2577                                 }
2578                                 kfree(root_vpbl.leaf_vpbl);
2579                                 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2580                                                 root_vpbl.pbl_pbase);
2581                         }
2582
2583                         nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2584
2585                         return ibmr;
2586                 case IWNES_MEMREG_TYPE_QP:
2587                 case IWNES_MEMREG_TYPE_CQ:
2588                         nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2589                         if (!nespbl) {
2590                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2591                                 ib_umem_release(region);
2592                                 return ERR_PTR(-ENOMEM);
2593                         }
2594                         nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2595                         if (!nesmr) {
2596                                 ib_umem_release(region);
2597                                 kfree(nespbl);
2598                                 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2599                                 return ERR_PTR(-ENOMEM);
2600                         }
2601                         nesmr->region = region;
2602                         nes_ucontext = to_nesucontext(pd->uobject->context);
2603                         pbl_depth = region->length >> 12;
2604                         pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2605                         nespbl->pbl_size = pbl_depth*sizeof(u64);
2606                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2607                                 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2608                         } else {
2609                                 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2610                         }
2611
2612                         nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2613                                         nespbl->pbl_size, pbl_depth);
2614                         pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2615                                         &nespbl->pbl_pbase);
2616                         if (!pbl) {
2617                                 ib_umem_release(region);
2618                                 kfree(nesmr);
2619                                 kfree(nespbl);
2620                                 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2621                                 return ERR_PTR(-ENOMEM);
2622                         }
2623
2624                         nespbl->pbl_vbase = (u64 *)pbl;
2625                         nespbl->user_base = start;
2626                         nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2627                                         " pbl_vbase=%p user_base=0x%lx\n",
2628                                   nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2629                                   (void *) nespbl->pbl_vbase, nespbl->user_base);
2630
2631                         list_for_each_entry(chunk, &region->chunk_list, list) {
2632                                 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2633                                         chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2634                                         chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2635                                         nespbl->page = sg_page(&chunk->page_list[0]);
2636                                         for (page_index=0; page_index<chunk_pages; page_index++) {
2637                                                 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2638                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2639                                                                 (page_index*4096)));
2640                                                 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2641                                                                 (sg_dma_address(&chunk->page_list[nmap_index])+
2642                                                                 (page_index*4096)))>>32);
2643                                                 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2644                                                                 (unsigned long long)*pbl,
2645                                                                 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2646                                                 pbl++;
2647                                         }
2648                                 }
2649                         }
2650                         if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2651                                 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2652                         } else {
2653                                 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2654                         }
2655                         nesmr->ibmr.rkey = -1;
2656                         nesmr->ibmr.lkey = -1;
2657                         nesmr->mode = req.reg_type;
2658                         return &nesmr->ibmr;
2659         }
2660
2661         return ERR_PTR(-ENOSYS);
2662 }
2663
2664
2665 /**
2666  * nes_dereg_mr
2667  */
2668 static int nes_dereg_mr(struct ib_mr *ib_mr)
2669 {
2670         struct nes_mr *nesmr = to_nesmr(ib_mr);
2671         struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2672         struct nes_device *nesdev = nesvnic->nesdev;
2673         struct nes_adapter *nesadapter = nesdev->nesadapter;
2674         struct nes_hw_cqp_wqe *cqp_wqe;
2675         struct nes_cqp_request *cqp_request;
2676         unsigned long flags;
2677         int ret;
2678         u16 major_code;
2679         u16 minor_code;
2680
2681         if (nesmr->region) {
2682                 ib_umem_release(nesmr->region);
2683         }
2684         if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2685                 kfree(nesmr);
2686                 return 0;
2687         }
2688
2689         /* Deallocate the region with the adapter */
2690
2691         cqp_request = nes_get_cqp_request(nesdev);
2692         if (cqp_request == NULL) {
2693                 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2694                 return -ENOMEM;
2695         }
2696         cqp_request->waiting = 1;
2697         cqp_wqe = &cqp_request->cqp_wqe;
2698
2699         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2700         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2701                         NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2702                         NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2703         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2704
2705         atomic_set(&cqp_request->refcount, 2);
2706         nes_post_cqp_request(nesdev, cqp_request);
2707
2708         /* Wait for CQP */
2709         nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2710         ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2711                         NES_EVENT_TIMEOUT);
2712         nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2713                         " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2714                         ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2715
2716         major_code = cqp_request->major_code;
2717         minor_code = cqp_request->minor_code;
2718
2719         nes_put_cqp_request(nesdev, cqp_request);
2720
2721         if (!ret) {
2722                 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2723                                 " ib_mr=%p, rkey = 0x%08X\n",
2724                                 ib_mr, ib_mr->rkey);
2725                 return -ETIME;
2726         } else if (major_code) {
2727                 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2728                                 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2729                                 major_code, minor_code, ib_mr, ib_mr->rkey);
2730                 return -EIO;
2731         }
2732
2733         if (nesmr->pbls_used != 0) {
2734                 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2735                 if (nesmr->pbl_4k) {
2736                         nesadapter->free_4kpbl += nesmr->pbls_used;
2737                         if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2738                                 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2739                                         "exceeded the max(%u)\n",
2740                                         nesadapter->free_4kpbl,
2741                                         nesadapter->max_4kpbl);
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 "
2746                                         "exceeded the max(%u)\n",
2747                                         nesadapter->free_256pbl,
2748                                         nesadapter->max_256pbl);
2749                 }
2750                 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2751         }
2752         nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2753                         (ib_mr->rkey & 0x0fffff00) >> 8);
2754
2755         kfree(nesmr);
2756
2757         return 0;
2758 }
2759
2760
2761 /**
2762  * show_rev
2763  */
2764 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2765                         char *buf)
2766 {
2767         struct nes_ib_device *nesibdev =
2768                         container_of(dev, struct nes_ib_device, ibdev.dev);
2769         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2770
2771         nes_debug(NES_DBG_INIT, "\n");
2772         return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2773 }
2774
2775
2776 /**
2777  * show_fw_ver
2778  */
2779 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2780                            char *buf)
2781 {
2782         struct nes_ib_device *nesibdev =
2783                         container_of(dev, struct nes_ib_device, ibdev.dev);
2784         struct nes_vnic *nesvnic = nesibdev->nesvnic;
2785
2786         nes_debug(NES_DBG_INIT, "\n");
2787         return sprintf(buf, "%x.%x.%x\n",
2788                         (int)(nesvnic->nesdev->nesadapter->fw_ver >> 32),
2789                         (int)(nesvnic->nesdev->nesadapter->fw_ver >> 16) & 0xffff,
2790                         (int)(nesvnic->nesdev->nesadapter->fw_ver & 0xffff));
2791 }
2792
2793
2794 /**
2795  * show_hca
2796  */
2797 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2798                         char *buf)
2799 {
2800         nes_debug(NES_DBG_INIT, "\n");
2801         return sprintf(buf, "NES020\n");
2802 }
2803
2804
2805 /**
2806  * show_board
2807  */
2808 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2809                           char *buf)
2810 {
2811         nes_debug(NES_DBG_INIT, "\n");
2812         return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2813 }
2814
2815
2816 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2817 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2818 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2819 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2820
2821 static struct device_attribute *nes_dev_attributes[] = {
2822         &dev_attr_hw_rev,
2823         &dev_attr_fw_ver,
2824         &dev_attr_hca_type,
2825         &dev_attr_board_id
2826 };
2827
2828
2829 /**
2830  * nes_query_qp
2831  */
2832 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2833                 int attr_mask, struct ib_qp_init_attr *init_attr)
2834 {
2835         struct nes_qp *nesqp = to_nesqp(ibqp);
2836
2837         nes_debug(NES_DBG_QP, "\n");
2838
2839         attr->qp_access_flags = 0;
2840         attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2841         attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2842         attr->cap.max_recv_sge = 1;
2843         if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2844                 init_attr->cap.max_inline_data = 0;
2845         } else {
2846                 init_attr->cap.max_inline_data = 64;
2847         }
2848
2849         init_attr->event_handler = nesqp->ibqp.event_handler;
2850         init_attr->qp_context = nesqp->ibqp.qp_context;
2851         init_attr->send_cq = nesqp->ibqp.send_cq;
2852         init_attr->recv_cq = nesqp->ibqp.recv_cq;
2853         init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2854         init_attr->cap = attr->cap;
2855
2856         return 0;
2857 }
2858
2859
2860 /**
2861  * nes_hw_modify_qp
2862  */
2863 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2864                 u32 next_iwarp_state, u32 wait_completion)
2865 {
2866         struct nes_hw_cqp_wqe *cqp_wqe;
2867         /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2868         /* struct iw_cm_event cm_event; */
2869         struct nes_cqp_request *cqp_request;
2870         int ret;
2871         u16 major_code;
2872
2873         nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2874                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2875
2876         cqp_request = nes_get_cqp_request(nesdev);
2877         if (cqp_request == NULL) {
2878                 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2879                 return -ENOMEM;
2880         }
2881         if (wait_completion) {
2882                 cqp_request->waiting = 1;
2883         } else {
2884                 cqp_request->waiting = 0;
2885         }
2886         cqp_wqe = &cqp_request->cqp_wqe;
2887
2888         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2889                         NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2890         nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2891                         next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2892         nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2893         set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2894         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2895
2896         atomic_set(&cqp_request->refcount, 2);
2897         nes_post_cqp_request(nesdev, cqp_request);
2898
2899         /* Wait for CQP */
2900         if (wait_completion) {
2901                 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2902                                 nesqp->hwqp.qp_id); */
2903                 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2904                                 NES_EVENT_TIMEOUT);
2905                 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2906                                 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2907                                 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2908                 major_code = cqp_request->major_code;
2909                 if (major_code) {
2910                         nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2911                                         "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2912                                         nesqp->hwqp.qp_id, cqp_request->major_code,
2913                                         cqp_request->minor_code, next_iwarp_state);
2914                 }
2915
2916                 nes_put_cqp_request(nesdev, cqp_request);
2917
2918                 if (!ret)
2919                         return -ETIME;
2920                 else if (major_code)
2921                         return -EIO;
2922                 else
2923                         return 0;
2924         } else {
2925                 return 0;
2926         }
2927 }
2928
2929
2930 /**
2931  * nes_modify_qp
2932  */
2933 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2934                 int attr_mask, struct ib_udata *udata)
2935 {
2936         struct nes_qp *nesqp = to_nesqp(ibqp);
2937         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2938         struct nes_device *nesdev = nesvnic->nesdev;
2939         /* u32 cqp_head; */
2940         /* u32 counter; */
2941         u32 next_iwarp_state = 0;
2942         int err;
2943         unsigned long qplockflags;
2944         int ret;
2945         u16 original_last_aeq;
2946         u8 issue_modify_qp = 0;
2947         u8 issue_disconnect = 0;
2948         u8 dont_wait = 0;
2949
2950         nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2951                         " iwarp_state=0x%X, refcount=%d\n",
2952                         nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2953                         nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2954
2955         spin_lock_irqsave(&nesqp->lock, qplockflags);
2956
2957         nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2958                         " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2959                         nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2960                         nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2961
2962         if (attr_mask & IB_QP_STATE) {
2963                 switch (attr->qp_state) {
2964                         case IB_QPS_INIT:
2965                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2966                                                 nesqp->hwqp.qp_id);
2967                                 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2968                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2969                                         return -EINVAL;
2970                                 }
2971                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2972                                 issue_modify_qp = 1;
2973                                 break;
2974                         case IB_QPS_RTR:
2975                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2976                                                 nesqp->hwqp.qp_id);
2977                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2978                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2979                                         return -EINVAL;
2980                                 }
2981                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2982                                 issue_modify_qp = 1;
2983                                 break;
2984                         case IB_QPS_RTS:
2985                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2986                                                 nesqp->hwqp.qp_id);
2987                                 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2988                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2989                                         return -EINVAL;
2990                                 }
2991                                 if (nesqp->cm_id == NULL) {
2992                                         nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2993                                                         nesqp->hwqp.qp_id );
2994                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2995                                         return -EINVAL;
2996                                 }
2997                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2998                                 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2999                                         next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3000                                                         NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3001                                 issue_modify_qp = 1;
3002                                 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3003                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3004                                 nesqp->hte_added = 1;
3005                                 break;
3006                         case IB_QPS_SQD:
3007                                 issue_modify_qp = 1;
3008                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3009                                                 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3010                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3011                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3012                                         return 0;
3013                                 } else {
3014                                         if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3015                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3016                                                                 " ignored due to current iWARP state\n",
3017                                                                 nesqp->hwqp.qp_id);
3018                                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3019                                                 return -EINVAL;
3020                                         }
3021                                         if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3022                                                 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3023                                                                 " already done based on hw state.\n",
3024                                                                 nesqp->hwqp.qp_id);
3025                                                 issue_modify_qp = 0;
3026                                                 nesqp->in_disconnect = 0;
3027                                         }
3028                                         switch (nesqp->hw_iwarp_state) {
3029                                                 case NES_AEQE_IWARP_STATE_CLOSING:
3030                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3031                                                 case NES_AEQE_IWARP_STATE_TERMINATE:
3032                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3033                                                         break;
3034                                                 case NES_AEQE_IWARP_STATE_ERROR:
3035                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3036                                                         break;
3037                                                 default:
3038                                                         next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3039                                                         nesqp->in_disconnect = 1;
3040                                                         nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3041                                                         break;
3042                                         }
3043                                 }
3044                                 break;
3045                         case IB_QPS_SQE:
3046                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3047                                                 nesqp->hwqp.qp_id);
3048                                 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3049                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3050                                         return -EINVAL;
3051                                 }
3052                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3053                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3054                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3055                                 issue_modify_qp = 1;
3056                                 nesqp->in_disconnect = 1;
3057                                 break;
3058                         case IB_QPS_ERR:
3059                         case IB_QPS_RESET:
3060                                 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3061                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3062                                         return -EINVAL;
3063                                 }
3064                                 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3065                                                 nesqp->hwqp.qp_id);
3066                                 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3067                                 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3068                                         if (nesqp->hte_added) {
3069                                                 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3070                                                 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3071                                                 nesqp->hte_added = 0;
3072                                         }
3073                                 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3074                                                 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3075                                         next_iwarp_state |= NES_CQP_QP_RESET;
3076                                         nesqp->in_disconnect = 1;
3077                                 } else {
3078                                         nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3079                                                         nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3080                                         dont_wait = 1;
3081                                 }
3082                                 issue_modify_qp = 1;
3083                                 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3084                                 break;
3085                         default:
3086                                 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3087                                 return -EINVAL;
3088                                 break;
3089                 }
3090
3091                 nesqp->ibqp_state = attr->qp_state;
3092                 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3093                                 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3094                                 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3095                                 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3096                         nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3097                         nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3098                                         nesqp->iwarp_state);
3099                         issue_disconnect = 1;
3100                 } else {
3101                         nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3102                         nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3103                                         nesqp->iwarp_state);
3104                 }
3105         }
3106
3107         if (attr_mask & IB_QP_ACCESS_FLAGS) {
3108                 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3109                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3110                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3111                         issue_modify_qp = 1;
3112                 }
3113                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3114                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3115                         issue_modify_qp = 1;
3116                 }
3117                 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3118                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3119                         issue_modify_qp = 1;
3120                 }
3121                 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3122                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3123                         issue_modify_qp = 1;
3124                 }
3125
3126                 if (nesqp->user_mode) {
3127                         nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3128                                         NES_QPCONTEXT_MISC_RDMA_READ_EN);
3129                         issue_modify_qp = 1;
3130                 }
3131         }
3132
3133         original_last_aeq = nesqp->last_aeq;
3134         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3135
3136         nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3137
3138         ret = 0;
3139
3140
3141         if (issue_modify_qp) {
3142                 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3143                 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
3144                 if (ret)
3145                         nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3146                                         " failed for QP%u.\n",
3147                                         next_iwarp_state, nesqp->hwqp.qp_id);
3148
3149         }
3150
3151         if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3152                 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3153                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3154                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3155                                 original_last_aeq, nesqp->last_aeq);
3156                 if ((!ret) ||
3157                                 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3158                                 (ret))) {
3159                         if (dont_wait) {
3160                                 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3161                                         nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3162                                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3163                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3164                                                         original_last_aeq, nesqp->last_aeq);
3165                                         /* this one is for the cm_disconnect thread */
3166                                         spin_lock_irqsave(&nesqp->lock, qplockflags);
3167                                         nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3168                                         nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3169                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3170                                         nes_cm_disconn(nesqp);
3171                                 } else {
3172                                         nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3173                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3174                                 }
3175                         } else {
3176                                 spin_lock_irqsave(&nesqp->lock, qplockflags);
3177                                 if (nesqp->cm_id) {
3178                                         /* These two are for the timer thread */
3179                                         if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3180                                                 nesqp->cm_id->add_ref(nesqp->cm_id);
3181                                                 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3182                                                                 " need ae to finish up, original_last_aeq = 0x%04X."
3183                                                                 " last_aeq = 0x%04X, scheduling timer.\n",
3184                                                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3185                                                                 original_last_aeq, nesqp->last_aeq);
3186                                                 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3187                                         }
3188                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3189                                 } else {
3190                                         spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3191                                         nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3192                                                         " need ae to finish up, original_last_aeq = 0x%04X."
3193                                                         " last_aeq = 0x%04X.\n",
3194                                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3195                                                         original_last_aeq, nesqp->last_aeq);
3196                                 }
3197                         }
3198                 } else {
3199                         nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3200                                         " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3201                                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3202                                         original_last_aeq, nesqp->last_aeq);
3203                 }
3204         } else {
3205                 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3206                                 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3207                                 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3208                                 original_last_aeq, nesqp->last_aeq);
3209         }
3210
3211         err = 0;
3212
3213         nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3214                         nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3215
3216         return err;
3217 }
3218
3219
3220 /**
3221  * nes_muticast_attach
3222  */
3223 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3224 {
3225         nes_debug(NES_DBG_INIT, "\n");
3226         return -ENOSYS;
3227 }
3228
3229
3230 /**
3231  * nes_multicast_detach
3232  */
3233 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3234 {
3235         nes_debug(NES_DBG_INIT, "\n");
3236         return -ENOSYS;
3237 }
3238
3239
3240 /**
3241  * nes_process_mad
3242  */
3243 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3244                 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3245                 struct ib_mad *in_mad, struct ib_mad *out_mad)
3246 {
3247         nes_debug(NES_DBG_INIT, "\n");
3248         return -ENOSYS;
3249 }
3250
3251 static inline void
3252 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3253 {
3254         int sge_index;
3255         int total_payload_length = 0;
3256         for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3257                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3258                         ib_wr->sg_list[sge_index].addr);
3259                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3260                         ib_wr->sg_list[sge_index].length);
3261                 if (uselkey)
3262                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3263                                                 (ib_wr->sg_list[sge_index].lkey));
3264                 else
3265                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3266
3267                 total_payload_length += ib_wr->sg_list[sge_index].length;
3268         }
3269         nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3270                         total_payload_length);
3271         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3272                                 total_payload_length);
3273 }
3274
3275 /**
3276  * nes_post_send
3277  */
3278 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3279                 struct ib_send_wr **bad_wr)
3280 {
3281         u64 u64temp;
3282         unsigned long flags = 0;
3283         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3284         struct nes_device *nesdev = nesvnic->nesdev;
3285         struct nes_qp *nesqp = to_nesqp(ibqp);
3286         struct nes_hw_qp_wqe *wqe;
3287         int err;
3288         u32 qsize = nesqp->hwqp.sq_size;
3289         u32 head;
3290         u32 wqe_misc;
3291         u32 wqe_count;
3292         u32 counter;
3293         u32 total_payload_length;
3294
3295         err = 0;
3296         wqe_misc = 0;
3297         wqe_count = 0;
3298         total_payload_length = 0;
3299
3300         if (nesqp->ibqp_state > IB_QPS_RTS)
3301                 return -EINVAL;
3302
3303         spin_lock_irqsave(&nesqp->lock, flags);
3304
3305         head = nesqp->hwqp.sq_head;
3306
3307         while (ib_wr) {
3308                 /* Check for SQ overflow */
3309                 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3310                         err = -EINVAL;
3311                         break;
3312                 }
3313
3314                 wqe = &nesqp->hwqp.sq_vbase[head];
3315                 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3316                                 nesqp->hwqp.qp_id, wqe, head); */
3317                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3318                 u64temp = (u64)(ib_wr->wr_id);
3319                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3320                                         u64temp);
3321                         switch (ib_wr->opcode) {
3322                                 case IB_WR_SEND:
3323                                         if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3324                                                 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3325                                         } else {
3326                                                 wqe_misc = NES_IWARP_SQ_OP_SEND;
3327                                         }
3328                                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3329                                                 err = -EINVAL;
3330                                                 break;
3331                                         }
3332                                         if (ib_wr->send_flags & IB_SEND_FENCE) {
3333                                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3334                                         }
3335                                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3336                                                         ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3337                                                         (ib_wr->sg_list[0].length <= 64)) {
3338                                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3339                                                                (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3340                                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3341                                                                 ib_wr->sg_list[0].length);
3342                                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3343                                         } else {
3344                                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3345                                         }
3346
3347                                         break;
3348                                 case IB_WR_RDMA_WRITE:
3349                                         wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3350                                         if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3351                                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3352                                                                 ib_wr->num_sge,
3353                                                                 nesdev->nesadapter->max_sge);
3354                                                 err = -EINVAL;
3355                                                 break;
3356                                         }
3357                                         if (ib_wr->send_flags & IB_SEND_FENCE) {
3358                                                 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3359                                         }
3360
3361                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3362                                                         ib_wr->wr.rdma.rkey);
3363                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3364                                                         ib_wr->wr.rdma.remote_addr);
3365
3366                                         if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3367                                                         ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3368                                                         (ib_wr->sg_list[0].length <= 64)) {
3369                                                 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3370                                                                (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3371                                                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3372                                                                 ib_wr->sg_list[0].length);
3373                                                 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3374                                         } else {
3375                                                 fill_wqe_sg_send(wqe, ib_wr, 1);
3376                                         }
3377                                         wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3378                                                         wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3379                                         break;
3380                                 case IB_WR_RDMA_READ:
3381                                         /* iWARP only supports 1 sge for RDMA reads */
3382                                         if (ib_wr->num_sge > 1) {
3383                                                 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3384                                                                 ib_wr->num_sge);
3385                                                 err = -EINVAL;
3386                                                 break;
3387                                         }
3388                                         wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3389                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3390                                                         ib_wr->wr.rdma.remote_addr);
3391                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3392                                                         ib_wr->wr.rdma.rkey);
3393                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3394                                                         ib_wr->sg_list->length);
3395                                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3396                                                         ib_wr->sg_list->addr);
3397                                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3398                                                         ib_wr->sg_list->lkey);
3399                                         break;
3400                                 default:
3401                                         /* error */
3402                                         err = -EINVAL;
3403                                         break;
3404                         }
3405
3406                 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3407                         wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3408                 }
3409                 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3410
3411                 ib_wr = ib_wr->next;
3412                 head++;
3413                 wqe_count++;
3414                 if (head >= qsize)
3415                         head = 0;
3416
3417         }
3418
3419         nesqp->hwqp.sq_head = head;
3420         barrier();
3421         while (wqe_count) {
3422                 counter = min(wqe_count, ((u32)255));
3423                 wqe_count -= counter;
3424                 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3425                                 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3426         }
3427
3428         spin_unlock_irqrestore(&nesqp->lock, flags);
3429
3430         if (err)
3431                 *bad_wr = ib_wr;
3432         return err;
3433 }
3434
3435
3436 /**
3437  * nes_post_recv
3438  */
3439 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3440                 struct ib_recv_wr **bad_wr)
3441 {
3442         u64 u64temp;
3443         unsigned long flags = 0;
3444         struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3445         struct nes_device *nesdev = nesvnic->nesdev;
3446         struct nes_qp *nesqp = to_nesqp(ibqp);
3447         struct nes_hw_qp_wqe *wqe;
3448         int err = 0;
3449         int sge_index;
3450         u32 qsize = nesqp->hwqp.rq_size;
3451         u32 head;
3452         u32 wqe_count = 0;
3453         u32 counter;
3454         u32 total_payload_length;
3455
3456         if (nesqp->ibqp_state > IB_QPS_RTS)
3457                 return -EINVAL;
3458
3459         spin_lock_irqsave(&nesqp->lock, flags);
3460
3461         head = nesqp->hwqp.rq_head;
3462
3463         while (ib_wr) {
3464                 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3465                         err = -EINVAL;
3466                         break;
3467                 }
3468                 /* Check for RQ overflow */
3469                 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3470                         err = -EINVAL;
3471                         break;
3472                 }
3473
3474                 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3475                 wqe = &nesqp->hwqp.rq_vbase[head];
3476
3477                 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3478                                 nesqp->hwqp.qp_id, wqe, head); */
3479                 nes_fill_init_qp_wqe(wqe, nesqp, head);
3480                 u64temp = (u64)(ib_wr->wr_id);
3481                 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3482                                         u64temp);
3483                 total_payload_length = 0;
3484                 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3485                         set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3486                                         ib_wr->sg_list[sge_index].addr);
3487                         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3488                                         ib_wr->sg_list[sge_index].length);
3489                         set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3490                                         ib_wr->sg_list[sge_index].lkey);
3491
3492                         total_payload_length += ib_wr->sg_list[sge_index].length;
3493                 }
3494                 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3495                                         total_payload_length);
3496
3497                 ib_wr = ib_wr->next;
3498                 head++;
3499                 wqe_count++;
3500                 if (head >= qsize)
3501                         head = 0;
3502         }
3503
3504         nesqp->hwqp.rq_head = head;
3505         barrier();
3506         while (wqe_count) {
3507                 counter = min(wqe_count, ((u32)255));
3508                 wqe_count -= counter;
3509                 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3510         }
3511
3512         spin_unlock_irqrestore(&nesqp->lock, flags);
3513
3514         if (err)
3515                 *bad_wr = ib_wr;
3516         return err;
3517 }
3518
3519
3520 /**
3521  * nes_poll_cq
3522  */
3523 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3524 {
3525         u64 u64temp;
3526         u64 wrid;
3527         /* u64 u64temp; */
3528         unsigned long flags = 0;
3529         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3530         struct nes_device *nesdev = nesvnic->nesdev;
3531         struct nes_cq *nescq = to_nescq(ibcq);
3532         struct nes_qp *nesqp;
3533         struct nes_hw_cqe cqe;
3534         u32 head;
3535         u32 wq_tail;
3536         u32 cq_size;
3537         u32 cqe_count = 0;
3538         u32 wqe_index;
3539         u32 u32temp;
3540         /* u32 counter; */
3541
3542         nes_debug(NES_DBG_CQ, "\n");
3543
3544         spin_lock_irqsave(&nescq->lock, flags);
3545
3546         head = nescq->hw_cq.cq_head;
3547         cq_size = nescq->hw_cq.cq_size;
3548
3549         while (cqe_count < num_entries) {
3550                 if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3551                                 NES_CQE_VALID) {
3552                         /*
3553                          * Make sure we read CQ entry contents *after*
3554                          * we've checked the valid bit.
3555                          */
3556                         rmb();
3557
3558                         cqe = nescq->hw_cq.cq_vbase[head];
3559                         nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3560                         u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3561                         wqe_index = u32temp &
3562                                         (nesdev->nesadapter->max_qp_wr - 1);
3563                         u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3564                         /* parse CQE, get completion context from WQE (either rq or sq */
3565                         u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3566                                         ((u64)u32temp);
3567                         nesqp = *((struct nes_qp **)&u64temp);
3568                         memset(entry, 0, sizeof *entry);
3569                         if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3570                                 entry->status = IB_WC_SUCCESS;
3571                         } else {
3572                                 entry->status = IB_WC_WR_FLUSH_ERR;
3573                         }
3574
3575                         entry->qp = &nesqp->ibqp;
3576                         entry->src_qp = nesqp->hwqp.qp_id;
3577
3578                         if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3579                                 if (nesqp->skip_lsmm) {
3580                                         nesqp->skip_lsmm = 0;
3581                                         wq_tail = nesqp->hwqp.sq_tail++;
3582                                 }
3583
3584                                 /* Working on a SQ Completion*/
3585                                 wq_tail = wqe_index;
3586                                 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3587                                 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3588                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3589                                                 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3590                                                 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3591                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3592                                                 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3593
3594                                 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3595                                                 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3596                                         case NES_IWARP_SQ_OP_RDMAW:
3597                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3598                                                 entry->opcode = IB_WC_RDMA_WRITE;
3599                                                 break;
3600                                         case NES_IWARP_SQ_OP_RDMAR:
3601                                                 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3602                                                 entry->opcode = IB_WC_RDMA_READ;
3603                                                 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3604                                                                 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3605                                                 break;
3606                                         case NES_IWARP_SQ_OP_SENDINV:
3607                                         case NES_IWARP_SQ_OP_SENDSEINV:
3608                                         case NES_IWARP_SQ_OP_SEND:
3609                                         case NES_IWARP_SQ_OP_SENDSE:
3610                                                 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3611                                                 entry->opcode = IB_WC_SEND;
3612                                                 break;
3613                                 }
3614                         } else {
3615                                 /* Working on a RQ Completion*/
3616                                 wq_tail = wqe_index;
3617                                         nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3618                                 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3619                                 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3620                                         ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3621                                         entry->opcode = IB_WC_RECV;
3622                         }
3623                         entry->wr_id = wrid;
3624
3625                         if (++head >= cq_size)
3626                                 head = 0;
3627                         cqe_count++;
3628                         nescq->polled_completions++;
3629                         if ((nescq->polled_completions > (cq_size / 2)) ||
3630                                         (nescq->polled_completions == 255)) {
3631                                 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3632                                                 " are pending %u of %u.\n",
3633                                                 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3634                                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3635                                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3636                                 nescq->polled_completions = 0;
3637                         }
3638                         entry++;
3639                 } else
3640                         break;
3641         }
3642
3643         if (nescq->polled_completions) {
3644                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3645                                 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3646                 nescq->polled_completions = 0;
3647         }
3648
3649         nescq->hw_cq.cq_head = head;
3650         nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3651                         cqe_count, nescq->hw_cq.cq_number);
3652
3653         spin_unlock_irqrestore(&nescq->lock, flags);
3654
3655         return cqe_count;
3656 }
3657
3658
3659 /**
3660  * nes_req_notify_cq
3661  */
3662 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3663                 {
3664         struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3665         struct nes_device *nesdev = nesvnic->nesdev;
3666         struct nes_cq *nescq = to_nescq(ibcq);
3667         u32 cq_arm;
3668
3669         nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3670                         nescq->hw_cq.cq_number);
3671
3672         cq_arm = nescq->hw_cq.cq_number;
3673         if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3674                 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3675         else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3676                 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3677         else
3678                 return -EINVAL;
3679
3680         nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3681         nes_read32(nesdev->regs+NES_CQE_ALLOC);
3682
3683         return 0;
3684 }
3685
3686
3687 /**
3688  * nes_init_ofa_device
3689  */
3690 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3691 {
3692         struct nes_ib_device *nesibdev;
3693         struct nes_vnic *nesvnic = netdev_priv(netdev);
3694         struct nes_device *nesdev = nesvnic->nesdev;
3695
3696         nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3697         if (nesibdev == NULL) {
3698                 return NULL;
3699         }
3700         strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3701         nesibdev->ibdev.owner = THIS_MODULE;
3702
3703         nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3704         memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3705         memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3706
3707         nesibdev->ibdev.uverbs_cmd_mask =
3708                         (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3709                         (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3710                         (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3711                         (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3712                         (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3713                         (1ull << IB_USER_VERBS_CMD_REG_MR) |
3714                         (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3715                         (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3716                         (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3717                         (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3718                         (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3719                         (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3720                         (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3721                         (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3722                         (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3723                         (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3724                         (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3725                         (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3726                         (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3727                         (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3728                         (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3729                         (1ull << IB_USER_VERBS_CMD_POST_SEND);
3730
3731         nesibdev->ibdev.phys_port_cnt = 1;
3732         nesibdev->ibdev.num_comp_vectors = 1;
3733         nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3734         nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3735         nesibdev->ibdev.query_device = nes_query_device;
3736         nesibdev->ibdev.query_port = nes_query_port;
3737         nesibdev->ibdev.modify_port = nes_modify_port;
3738         nesibdev->ibdev.query_pkey = nes_query_pkey;
3739         nesibdev->ibdev.query_gid = nes_query_gid;
3740         nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3741         nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3742         nesibdev->ibdev.mmap = nes_mmap;
3743         nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3744         nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3745         nesibdev->ibdev.create_ah = nes_create_ah;
3746         nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3747         nesibdev->ibdev.create_qp = nes_create_qp;
3748         nesibdev->ibdev.modify_qp = nes_modify_qp;
3749         nesibdev->ibdev.query_qp = nes_query_qp;
3750         nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3751         nesibdev->ibdev.create_cq = nes_create_cq;
3752         nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3753         nesibdev->ibdev.poll_cq = nes_poll_cq;
3754         nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3755         nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3756         nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3757         nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3758         nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3759         nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3760         nesibdev->ibdev.bind_mw = nes_bind_mw;
3761
3762         nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3763         nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3764         nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3765         nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3766
3767         nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3768         nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3769         nesibdev->ibdev.process_mad = nes_process_mad;
3770
3771         nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3772         nesibdev->ibdev.post_send = nes_post_send;
3773         nesibdev->ibdev.post_recv = nes_post_recv;
3774
3775         nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3776         if (nesibdev->ibdev.iwcm == NULL) {
3777                 ib_dealloc_device(&nesibdev->ibdev);
3778                 return NULL;
3779         }
3780         nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3781         nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3782         nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3783         nesibdev->ibdev.iwcm->connect = nes_connect;
3784         nesibdev->ibdev.iwcm->accept = nes_accept;
3785         nesibdev->ibdev.iwcm->reject = nes_reject;
3786         nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3787         nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3788
3789         return nesibdev;
3790 }
3791
3792
3793 /**
3794  * nes_destroy_ofa_device
3795  */
3796 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3797 {
3798         if (nesibdev == NULL)
3799                 return;
3800
3801         nes_unregister_ofa_device(nesibdev);
3802
3803         kfree(nesibdev->ibdev.iwcm);
3804         ib_dealloc_device(&nesibdev->ibdev);
3805 }
3806
3807
3808 /**
3809  * nes_register_ofa_device
3810  */
3811 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3812 {
3813         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3814         struct nes_device *nesdev = nesvnic->nesdev;
3815         struct nes_adapter *nesadapter = nesdev->nesadapter;
3816         int i, ret;
3817
3818         ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3819         if (ret) {
3820                 return ret;
3821         }
3822
3823         /* Get the resources allocated to this device */
3824         nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3825         nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3826         nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3827         nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3828
3829         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3830                 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3831                 if (ret) {
3832                         while (i > 0) {
3833                                 i--;
3834                                 device_remove_file(&nesibdev->ibdev.dev,
3835                                                    nes_dev_attributes[i]);
3836                         }
3837                         ib_unregister_device(&nesibdev->ibdev);
3838                         return ret;
3839                 }
3840         }
3841
3842         nesvnic->of_device_registered = 1;
3843
3844         return 0;
3845 }
3846
3847
3848 /**
3849  * nes_unregister_ofa_device
3850  */
3851 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3852 {
3853         struct nes_vnic *nesvnic = nesibdev->nesvnic;
3854         int i;
3855
3856         for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3857                 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3858         }
3859
3860         if (nesvnic->of_device_registered) {
3861                 ib_unregister_device(&nesibdev->ibdev);
3862         }
3863
3864         nesvnic->of_device_registered = 0;
3865 }