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[linux-rt-nao.git] / drivers / infiniband / hw / nes / nes_verbs.c
blobd93a6562817ce2e0bfb27caeef26024544731971
1 /*
2 * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 */
33
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/random.h>
37 #include <linux/highmem.h>
38 #include <asm/byteorder.h>
39
40 #include <rdma/ib_verbs.h>
41 #include <rdma/iw_cm.h>
42 #include <rdma/ib_user_verbs.h>
43
44 #include "nes.h"
45
46 #include <rdma/ib_umem.h>
47
48 atomic_t mod_qp_timouts;
49 atomic_t qps_created;
50 atomic_t sw_qps_destroyed;
51
52 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
53
54 /**
55 * nes_alloc_mw
56 */
57 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
58 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
555 /* free the resources */
556 if (nesfmr->leaf_pbl_cnt == 0) {
557 /* single PBL case */
558 if (nesfmr->root_vpbl.pbl_vbase)
559 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
560 nesfmr->root_vpbl.pbl_pbase);
561 } else {
562 for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
563 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
564 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
565 }
566 kfree(nesfmr->root_vpbl.leaf_vpbl);
567 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
568 nesfmr->root_vpbl.pbl_pbase);
569 }
570 nesmr->ibmw.device = ibfmr->device;
571 nesmr->ibmw.pd = ibfmr->pd;
572 nesmr->ibmw.rkey = ibfmr->rkey;
573 nesmr->ibmw.uobject = NULL;
574
575 if (nesfmr->nesmr.pbls_used != 0) {
576 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
577 if (nesfmr->nesmr.pbl_4k) {
578 nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
579 WARN_ON(nesadapter->free_4kpbl > nesadapter->max_4kpbl);
580 } else {
581 nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
582 WARN_ON(nesadapter->free_256pbl > nesadapter->max_256pbl);
583 }
584 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
585 }
586
587 return nes_dealloc_mw(&nesmr->ibmw);
588 }
589
590
591 /**
592 * nes_map_phys_fmr
593 */
594 static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
595 int list_len, u64 iova)
596 {
597 return 0;
598 }
599
600
601 /**
602 * nes_unmap_frm
603 */
604 static int nes_unmap_fmr(struct list_head *ibfmr_list)
605 {
606 return 0;
607 }
608
609
610
611 /**
612 * nes_query_device
613 */
614 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
615 {
616 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
617 struct nes_device *nesdev = nesvnic->nesdev;
618 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
619
620 memset(props, 0, sizeof(*props));
621 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
622
623 props->fw_ver = nesdev->nesadapter->fw_ver;
624 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
625 props->vendor_id = nesdev->nesadapter->vendor_id;
626 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
627 props->hw_ver = nesdev->nesadapter->hw_rev;
628 props->max_mr_size = 0x80000000;
629 props->max_qp = nesibdev->max_qp;
630 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
631 props->max_sge = nesdev->nesadapter->max_sge;
632 props->max_cq = nesibdev->max_cq;
633 props->max_cqe = nesdev->nesadapter->max_cqe - 1;
634 props->max_mr = nesibdev->max_mr;
635 props->max_mw = nesibdev->max_mr;
636 props->max_pd = nesibdev->max_pd;
637 props->max_sge_rd = 1;
638 switch (nesdev->nesadapter->max_irrq_wr) {
639 case 0:
640 props->max_qp_rd_atom = 1;
641 break;
642 case 1:
643 props->max_qp_rd_atom = 4;
644 break;
645 case 2:
646 props->max_qp_rd_atom = 16;
647 break;
648 case 3:
649 props->max_qp_rd_atom = 32;
650 break;
651 default:
652 props->max_qp_rd_atom = 0;
653 }
654 props->max_qp_init_rd_atom = props->max_qp_wr;
655 props->atomic_cap = IB_ATOMIC_NONE;
656 props->max_map_per_fmr = 1;
657
658 return 0;
659 }
660
661
662 /**
663 * nes_query_port
664 */
665 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
666 {
667 memset(props, 0, sizeof(*props));
668
669 props->max_mtu = IB_MTU_2048;
670 props->active_mtu = IB_MTU_2048;
671 props->lid = 1;
672 props->lmc = 0;
673 props->sm_lid = 0;
674 props->sm_sl = 0;
675 props->state = IB_PORT_ACTIVE;
676 props->phys_state = 0;
677 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
678 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
679 props->gid_tbl_len = 1;
680 props->pkey_tbl_len = 1;
681 props->qkey_viol_cntr = 0;
682 props->active_width = IB_WIDTH_4X;
683 props->active_speed = 1;
684 props->max_msg_sz = 0x80000000;
685
686 return 0;
687 }
688
689
690 /**
691 * nes_modify_port
692 */
693 static int nes_modify_port(struct ib_device *ibdev, u8 port,
694 int port_modify_mask, struct ib_port_modify *props)
695 {
696 return 0;
697 }
698
699
700 /**
701 * nes_query_pkey
702 */
703 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
704 {
705 *pkey = 0;
706 return 0;
707 }
708
709
710 /**
711 * nes_query_gid
712 */
713 static int nes_query_gid(struct ib_device *ibdev, u8 port,
714 int index, union ib_gid *gid)
715 {
716 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
717
718 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
719 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
720
721 return 0;
722 }
723
724
725 /**
726 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
727 * of all objects associated with a particular user-mode client.
728 */
729 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
730 struct ib_udata *udata)
731 {
732 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
733 struct nes_device *nesdev = nesvnic->nesdev;
734 struct nes_adapter *nesadapter = nesdev->nesadapter;
735 struct nes_alloc_ucontext_req req;
736 struct nes_alloc_ucontext_resp uresp;
737 struct nes_ucontext *nes_ucontext;
738 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
739
740
741 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
742 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
743 return ERR_PTR(-EINVAL);
744 }
745
746 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
747 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
748 req.userspace_ver, NES_ABI_USERSPACE_VER);
749 return ERR_PTR(-EINVAL);
750 }
751
752
753 memset(&uresp, 0, sizeof uresp);
754
755 uresp.max_qps = nesibdev->max_qp;
756 uresp.max_pds = nesibdev->max_pd;
757 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
758 uresp.virtwq = nesadapter->virtwq;
759 uresp.kernel_ver = NES_ABI_KERNEL_VER;
760
761 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
762 if (!nes_ucontext)
763 return ERR_PTR(-ENOMEM);
764
765 nes_ucontext->nesdev = nesdev;
766 nes_ucontext->mmap_wq_offset = uresp.max_pds;
767 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
768 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
769 PAGE_SIZE;
770
771
772 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
773 kfree(nes_ucontext);
774 return ERR_PTR(-EFAULT);
775 }
776
777 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
778 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
779 atomic_set(&nes_ucontext->usecnt, 1);
780 return &nes_ucontext->ibucontext;
781 }
782
783
784 /**
785 * nes_dealloc_ucontext
786 */
787 static int nes_dealloc_ucontext(struct ib_ucontext *context)
788 {
789 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
790 /* struct nes_device *nesdev = nesvnic->nesdev; */
791 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
792
793 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
794 return 0;
795 kfree(nes_ucontext);
796 return 0;
797 }
798
799
800 /**
801 * nes_mmap
802 */
803 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
804 {
805 unsigned long index;
806 struct nes_vnic *nesvnic = to_nesvnic(context->device);
807 struct nes_device *nesdev = nesvnic->nesdev;
808 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
809 struct nes_ucontext *nes_ucontext;
810 struct nes_qp *nesqp;
811
812 nes_ucontext = to_nesucontext(context);
813
814
815 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
816 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
817 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
818 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
819 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
820 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
821 return -EFAULT;
822 }
823 nesqp = nes_ucontext->mmap_nesqp[index];
824 if (nesqp == NULL) {
825 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
826 return -EFAULT;
827 }
828 if (remap_pfn_range(vma, vma->vm_start,
829 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
830 vma->vm_end - vma->vm_start,
831 vma->vm_page_prot)) {
832 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
833 return -EAGAIN;
834 }
835 vma->vm_private_data = nesqp;
836 return 0;
837 } else {
838 index = vma->vm_pgoff;
839 if (!test_bit(index, nes_ucontext->allocated_doorbells))
840 return -EFAULT;
841
842 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
843 if (io_remap_pfn_range(vma, vma->vm_start,
844 (nesdev->doorbell_start +
845 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
846 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
847 return -EAGAIN;
848 vma->vm_private_data = nes_ucontext;
849 return 0;
850 }
851
852 return -ENOSYS;
853 }
854
855
856 /**
857 * nes_alloc_pd
858 */
859 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
860 struct ib_ucontext *context, struct ib_udata *udata)
861 {
862 struct nes_pd *nespd;
863 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
864 struct nes_device *nesdev = nesvnic->nesdev;
865 struct nes_adapter *nesadapter = nesdev->nesadapter;
866 struct nes_ucontext *nesucontext;
867 struct nes_alloc_pd_resp uresp;
868 u32 pd_num = 0;
869 int err;
870
871 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
872 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
873 atomic_read(&nesvnic->netdev->refcnt));
874
875 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
876 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
877 if (err) {
878 return ERR_PTR(err);
879 }
880
881 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
882 if (!nespd) {
883 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
884 return ERR_PTR(-ENOMEM);
885 }
886
887 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
888 nespd, nesvnic->nesibdev->ibdev.name);
889
890 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
891
892 if (context) {
893 nesucontext = to_nesucontext(context);
894 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
895 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
896 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
897 nespd->mmap_db_index, nespd->pd_id);
898 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
899 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
900 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
901 kfree(nespd);
902 return ERR_PTR(-ENOMEM);
903 }
904
905 uresp.pd_id = nespd->pd_id;
906 uresp.mmap_db_index = nespd->mmap_db_index;
907 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
908 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
909 kfree(nespd);
910 return ERR_PTR(-EFAULT);
911 }
912
913 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
914 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
915 nesucontext->first_free_db = nespd->mmap_db_index + 1;
916 }
917
918 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
919 return &nespd->ibpd;
920 }
921
922
923 /**
924 * nes_dealloc_pd
925 */
926 static int nes_dealloc_pd(struct ib_pd *ibpd)
927 {
928 struct nes_ucontext *nesucontext;
929 struct nes_pd *nespd = to_nespd(ibpd);
930 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
931 struct nes_device *nesdev = nesvnic->nesdev;
932 struct nes_adapter *nesadapter = nesdev->nesadapter;
933
934 if ((ibpd->uobject) && (ibpd->uobject->context)) {
935 nesucontext = to_nesucontext(ibpd->uobject->context);
936 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
937 nespd->mmap_db_index);
938 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
939 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
940 if (nesucontext->first_free_db > nespd->mmap_db_index) {
941 nesucontext->first_free_db = nespd->mmap_db_index;
942 }
943 }
944
945 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
946 nespd->pd_id, nespd);
947 nes_free_resource(nesadapter, nesadapter->allocated_pds,
948 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
949 kfree(nespd);
950
951 return 0;
952 }
953
954
955 /**
956 * nes_create_ah
957 */
958 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
959 {
960 return ERR_PTR(-ENOSYS);
961 }
962
963
964 /**
965 * nes_destroy_ah
966 */
967 static int nes_destroy_ah(struct ib_ah *ah)
968 {
969 return -ENOSYS;
970 }
971
972
973 /**
974 * nes_get_encoded_size
975 */
976 static inline u8 nes_get_encoded_size(int *size)
977 {
978 u8 encoded_size = 0;
979 if (*size <= 32) {
980 *size = 32;
981 encoded_size = 1;
982 } else if (*size <= 128) {
983 *size = 128;
984 encoded_size = 2;
985 } else if (*size <= 512) {
986 *size = 512;
987 encoded_size = 3;
988 }
989 return (encoded_size);
990 }
991
992
993
994 /**
995 * nes_setup_virt_qp
996 */
997 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
998 struct nes_vnic *nesvnic, int sq_size, int rq_size)
999 {
1000 unsigned long flags;
1001 void *mem;
1002 __le64 *pbl = NULL;
1003 __le64 *tpbl;
1004 __le64 *pblbuffer;
1005 struct nes_device *nesdev = nesvnic->nesdev;
1006 struct nes_adapter *nesadapter = nesdev->nesadapter;
1007 u32 pbl_entries;
1008 u8 rq_pbl_entries;
1009 u8 sq_pbl_entries;
1010
1011 pbl_entries = nespbl->pbl_size >> 3;
1012 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
1013 nespbl->pbl_size, pbl_entries,
1014 (void *)nespbl->pbl_vbase,
1015 (unsigned long) nespbl->pbl_pbase);
1016 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
1017 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
1018 /* the first pbl to be fro the rq_vbase... */
1019 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1020 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1021 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1022 if (!nespbl->page) {
1023 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1024 kfree(nespbl);
1025 return -ENOMEM;
1026 }
1027
1028 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1029 nesqp->page = nespbl->page;
1030 if (!nesqp->hwqp.sq_vbase) {
1031 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1032 kfree(nespbl);
1033 return -ENOMEM;
1034 }
1035
1036 /* Now to get to sq.. we need to calculate how many */
1037 /* PBL entries were used by the rq.. */
1038 pbl += sq_pbl_entries;
1039 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1040 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1041 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1042
1043 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1044 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1045 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
1046 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1047 if (!nesadapter->free_256pbl) {
1048 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1049 nespbl->pbl_pbase);
1050 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1051 kunmap(nesqp->page);
1052 kfree(nespbl);
1053 return -ENOMEM;
1054 }
1055 nesadapter->free_256pbl--;
1056 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1057
1058 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1059 pblbuffer = nesqp->pbl_vbase;
1060 if (!nesqp->pbl_vbase) {
1061 /* memory allocated during nes_reg_user_mr() */
1062 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1063 nespbl->pbl_pbase);
1064 kfree(nespbl);
1065 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1066 nesadapter->free_256pbl++;
1067 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1068 kunmap(nesqp->page);
1069 return -ENOMEM;
1070 }
1071 memset(nesqp->pbl_vbase, 0, 256);
1072 /* fill in the page address in the pbl buffer.. */
1073 tpbl = pblbuffer + 16;
1074 pbl = (__le64 *)nespbl->pbl_vbase;
1075 while (sq_pbl_entries--)
1076 *tpbl++ = *pbl++;
1077 tpbl = pblbuffer;
1078 while (rq_pbl_entries--)
1079 *tpbl++ = *pbl++;
1080
1081 /* done with memory allocated during nes_reg_user_mr() */
1082 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1083 nespbl->pbl_pbase);
1084 kfree(nespbl);
1085
1086 nesqp->qp_mem_size =
1087 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1088 /* Round up to a multiple of a page */
1089 nesqp->qp_mem_size += PAGE_SIZE - 1;
1090 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1091
1092 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1093 &nesqp->hwqp.q2_pbase);
1094
1095 if (!mem) {
1096 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1097 nesqp->pbl_vbase = NULL;
1098 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1099 nesadapter->free_256pbl++;
1100 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1101 kunmap(nesqp->page);
1102 return -ENOMEM;
1103 }
1104 nesqp->hwqp.q2_vbase = mem;
1105 mem += 256;
1106 memset(nesqp->hwqp.q2_vbase, 0, 256);
1107 nesqp->nesqp_context = mem;
1108 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1109 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1110
1111 return 0;
1112 }
1113
1114
1115 /**
1116 * nes_setup_mmap_qp
1117 */
1118 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1119 int sq_size, int rq_size)
1120 {
1121 void *mem;
1122 struct nes_device *nesdev = nesvnic->nesdev;
1123
1124 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1125 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1126 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1127 256; /* this is Q2 */
1128 /* Round up to a multiple of a page */
1129 nesqp->qp_mem_size += PAGE_SIZE - 1;
1130 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1131
1132 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1133 &nesqp->hwqp.sq_pbase);
1134 if (!mem)
1135 return -ENOMEM;
1136 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1137 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1138 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1139
1140 memset(mem, 0, nesqp->qp_mem_size);
1141
1142 nesqp->hwqp.sq_vbase = mem;
1143 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1144
1145 nesqp->hwqp.rq_vbase = mem;
1146 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1147 sizeof(struct nes_hw_qp_wqe) * sq_size;
1148 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1149
1150 nesqp->hwqp.q2_vbase = mem;
1151 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1152 sizeof(struct nes_hw_qp_wqe) * rq_size;
1153 mem += 256;
1154 memset(nesqp->hwqp.q2_vbase, 0, 256);
1155
1156 nesqp->nesqp_context = mem;
1157 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1158 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1159 return 0;
1160 }
1161
1162
1163 /**
1164 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1165 */
1166 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1167 struct nes_qp *nesqp, int virt_wqs)
1168 {
1169 unsigned long flags;
1170 struct nes_adapter *nesadapter = nesdev->nesadapter;
1171 if (!virt_wqs) {
1172 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1173 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1174 }else {
1175 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1176 nesadapter->free_256pbl++;
1177 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1178 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1179 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1180 nesqp->pbl_vbase = NULL;
1181 kunmap(nesqp->page);
1182 }
1183 }
1184
1185
1186 /**
1187 * nes_create_qp
1188 */
1189 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1190 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1191 {
1192 u64 u64temp= 0;
1193 u64 u64nesqp = 0;
1194 struct nes_pd *nespd = to_nespd(ibpd);
1195 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1196 struct nes_device *nesdev = nesvnic->nesdev;
1197 struct nes_adapter *nesadapter = nesdev->nesadapter;
1198 struct nes_qp *nesqp;
1199 struct nes_cq *nescq;
1200 struct nes_ucontext *nes_ucontext;
1201 struct nes_hw_cqp_wqe *cqp_wqe;
1202 struct nes_cqp_request *cqp_request;
1203 struct nes_create_qp_req req;
1204 struct nes_create_qp_resp uresp;
1205 struct nes_pbl *nespbl = NULL;
1206 u32 qp_num = 0;
1207 u32 opcode = 0;
1208 /* u32 counter = 0; */
1209 void *mem;
1210 unsigned long flags;
1211 int ret;
1212 int err;
1213 int virt_wqs = 0;
1214 int sq_size;
1215 int rq_size;
1216 u8 sq_encoded_size;
1217 u8 rq_encoded_size;
1218 /* int counter; */
1219
1220 if (init_attr->create_flags)
1221 return ERR_PTR(-EINVAL);
1222
1223 atomic_inc(&qps_created);
1224 switch (init_attr->qp_type) {
1225 case IB_QPT_RC:
1226 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1227 init_attr->cap.max_inline_data = 0;
1228 } else {
1229 init_attr->cap.max_inline_data = 64;
1230 }
1231 sq_size = init_attr->cap.max_send_wr;
1232 rq_size = init_attr->cap.max_recv_wr;
1233
1234 /* check if the encoded sizes are OK or not... */
1235 sq_encoded_size = nes_get_encoded_size(&sq_size);
1236 rq_encoded_size = nes_get_encoded_size(&rq_size);
1237
1238 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1239 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1240 rq_size, sq_size);
1241 return ERR_PTR(-EINVAL);
1242 }
1243
1244 init_attr->cap.max_send_wr = sq_size -2;
1245 init_attr->cap.max_recv_wr = rq_size -1;
1246 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1247
1248 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1249 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1250 if (ret) {
1251 return ERR_PTR(ret);
1252 }
1253
1254 /* Need 512 (actually now 1024) byte alignment on this structure */
1255 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1256 if (!mem) {
1257 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1258 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1259 return ERR_PTR(-ENOMEM);
1260 }
1261 u64nesqp = (unsigned long)mem;
1262 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1263 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1264 u64nesqp &= ~u64temp;
1265 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1266 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1267 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1268 nesqp->allocated_buffer = mem;
1269
1270 if (udata) {
1271 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1272 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1273 kfree(nesqp->allocated_buffer);
1274 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1275 return NULL;
1276 }
1277 if (req.user_wqe_buffers) {
1278 virt_wqs = 1;
1279 }
1280 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1281 nesqp->user_mode = 1;
1282 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1283 if (virt_wqs) {
1284 err = 1;
1285 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1286 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1287 list_del(&nespbl->list);
1288 err = 0;
1289 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1290 nespbl, nespbl->user_base);
1291 break;
1292 }
1293 }
1294 if (err) {
1295 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1296 (long long unsigned int)req.user_wqe_buffers);
1297 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1298 kfree(nesqp->allocated_buffer);
1299 return ERR_PTR(-EFAULT);
1300 }
1301 }
1302
1303 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1304 nesqp->mmap_sq_db_index =
1305 find_next_zero_bit(nes_ucontext->allocated_wqs,
1306 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1307 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1308 nespd->mmap_db_index); */
1309 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1310 nes_debug(NES_DBG_QP,
1311 "db index > max user regions, failing create QP\n");
1312 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1313 if (virt_wqs) {
1314 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1315 nespbl->pbl_pbase);
1316 kfree(nespbl);
1317 }
1318 kfree(nesqp->allocated_buffer);
1319 return ERR_PTR(-ENOMEM);
1320 }
1321 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1322 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1323 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1324 } else {
1325 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1326 kfree(nesqp->allocated_buffer);
1327 return ERR_PTR(-EFAULT);
1328 }
1329 }
1330 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1331 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1332 if (err) {
1333 nes_debug(NES_DBG_QP,
1334 "error geting qp mem code = %d\n", err);
1335 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1336 kfree(nesqp->allocated_buffer);
1337 return ERR_PTR(-ENOMEM);
1338 }
1339
1340 nesqp->hwqp.sq_size = sq_size;
1341 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1342 nesqp->hwqp.sq_head = 1;
1343 nesqp->hwqp.rq_size = rq_size;
1344 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1345 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1346 (void *)nesqp->nesqp_context_pbase);
1347 */
1348 nesqp->hwqp.qp_id = qp_num;
1349 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1350 nesqp->nespd = nespd;
1351
1352 nescq = to_nescq(init_attr->send_cq);
1353 nesqp->nesscq = nescq;
1354 nescq = to_nescq(init_attr->recv_cq);
1355 nesqp->nesrcq = nescq;
1356
1357 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1358 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1359 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1360 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1361 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1362 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1363 if (!udata) {
1364 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1365 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1366 }
1367 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1368 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1369 u64temp = (u64)nesqp->hwqp.sq_pbase;
1370 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1371 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1372
1373
1374 if (!virt_wqs) {
1375 u64temp = (u64)nesqp->hwqp.sq_pbase;
1376 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1377 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1378 u64temp = (u64)nesqp->hwqp.rq_pbase;
1379 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1380 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1381 } else {
1382 u64temp = (u64)nesqp->pbl_pbase;
1383 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1384 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1385 }
1386
1387 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1388 nesvnic->next_qp_nic_index,
1389 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1390 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1391 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1392 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1393 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1394 nesvnic->next_qp_nic_index++;
1395 if ((nesvnic->next_qp_nic_index > 3) ||
1396 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1397 nesvnic->next_qp_nic_index = 0;
1398 }
1399 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1400
1401 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1402 u64temp = (u64)nesqp->hwqp.q2_pbase;
1403 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1404 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1405 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1406 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1407 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1408 ((((u32)nesadapter->max_irrq_wr) <<
1409 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1410 if (disable_mpa_crc) {
1411 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1412 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1413 }
1414
1415
1416 /* Create the QP */
1417 cqp_request = nes_get_cqp_request(nesdev);
1418 if (cqp_request == NULL) {
1419 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1420 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1421 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1422 kfree(nesqp->allocated_buffer);
1423 return ERR_PTR(-ENOMEM);
1424 }
1425 cqp_request->waiting = 1;
1426 cqp_wqe = &cqp_request->cqp_wqe;
1427
1428 if (!virt_wqs) {
1429 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1430 NES_CQP_QP_IWARP_STATE_IDLE;
1431 } else {
1432 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1433 NES_CQP_QP_IWARP_STATE_IDLE;
1434 }
1435 opcode |= NES_CQP_QP_CQS_VALID;
1436 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1437 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1438 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1439
1440 u64temp = (u64)nesqp->nesqp_context_pbase;
1441 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1442
1443 atomic_set(&cqp_request->refcount, 2);
1444 nes_post_cqp_request(nesdev, cqp_request);
1445
1446 /* Wait for CQP */
1447 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1448 nesqp->hwqp.qp_id);
1449 ret = wait_event_timeout(cqp_request->waitq,
1450 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1451 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1452 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1453 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1454 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1455 cqp_request->major_code, cqp_request->minor_code);
1456 if ((!ret) || (cqp_request->major_code)) {
1457 nes_put_cqp_request(nesdev, cqp_request);
1458 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1459 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1460 kfree(nesqp->allocated_buffer);
1461 if (!ret) {
1462 return ERR_PTR(-ETIME);
1463 } else {
1464 return ERR_PTR(-EIO);
1465 }
1466 }
1467
1468 nes_put_cqp_request(nesdev, cqp_request);
1469
1470 if (ibpd->uobject) {
1471 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1472 uresp.actual_sq_size = sq_size;
1473 uresp.actual_rq_size = rq_size;
1474 uresp.qp_id = nesqp->hwqp.qp_id;
1475 uresp.nes_drv_opt = nes_drv_opt;
1476 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1477 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1478 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1479 kfree(nesqp->allocated_buffer);
1480 return ERR_PTR(-EFAULT);
1481 }
1482 }
1483
1484 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1485 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1486 spin_lock_init(&nesqp->lock);
1487 init_waitqueue_head(&nesqp->state_waitq);
1488 init_waitqueue_head(&nesqp->kick_waitq);
1489 nes_add_ref(&nesqp->ibqp);
1490 break;
1491 default:
1492 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1493 return ERR_PTR(-EINVAL);
1494 }
1495
1496 /* update the QP table */
1497 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1498 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1499 atomic_read(&nesvnic->netdev->refcnt));
1500
1501 return &nesqp->ibqp;
1502 }
1503
1504
1505 /**
1506 * nes_destroy_qp
1507 */
1508 static int nes_destroy_qp(struct ib_qp *ibqp)
1509 {
1510 struct nes_qp *nesqp = to_nesqp(ibqp);
1511 /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
1512 struct nes_ucontext *nes_ucontext;
1513 struct ib_qp_attr attr;
1514 struct iw_cm_id *cm_id;
1515 struct iw_cm_event cm_event;
1516 int ret;
1517
1518 atomic_inc(&sw_qps_destroyed);
1519 nesqp->destroyed = 1;
1520
1521 /* Blow away the connection if it exists. */
1522 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1523 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1524 attr.qp_state = IB_QPS_ERR;
1525 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1526 }
1527
1528 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1529 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1530 cm_id = nesqp->cm_id;
1531 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1532 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1533 cm_event.local_addr = cm_id->local_addr;
1534 cm_event.remote_addr = cm_id->remote_addr;
1535 cm_event.private_data = NULL;
1536 cm_event.private_data_len = 0;
1537
1538 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1539 "QP%u. cm_id = %p, refcount = %u. \n",
1540 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1541
1542 cm_id->rem_ref(cm_id);
1543 ret = cm_id->event_handler(cm_id, &cm_event);
1544 if (ret)
1545 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1546 }
1547
1548
1549 if (nesqp->user_mode) {
1550 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1551 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1552 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1553 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1554 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1555 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1556 }
1557 }
1558 if (nesqp->pbl_pbase)
1559 kunmap(nesqp->page);
1560 }
1561
1562 nes_rem_ref(&nesqp->ibqp);
1563 return 0;
1564 }
1565
1566
1567 /**
1568 * nes_create_cq
1569 */
1570 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1571 int comp_vector,
1572 struct ib_ucontext *context, struct ib_udata *udata)
1573 {
1574 u64 u64temp;
1575 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1576 struct nes_device *nesdev = nesvnic->nesdev;
1577 struct nes_adapter *nesadapter = nesdev->nesadapter;
1578 struct nes_cq *nescq;
1579 struct nes_ucontext *nes_ucontext = NULL;
1580 struct nes_cqp_request *cqp_request;
1581 void *mem = NULL;
1582 struct nes_hw_cqp_wqe *cqp_wqe;
1583 struct nes_pbl *nespbl = NULL;
1584 struct nes_create_cq_req req;
1585 struct nes_create_cq_resp resp;
1586 u32 cq_num = 0;
1587 u32 opcode = 0;
1588 u32 pbl_entries = 1;
1589 int err;
1590 unsigned long flags;
1591 int ret;
1592
1593 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1594 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1595 if (err) {
1596 return ERR_PTR(err);
1597 }
1598
1599 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1600 if (!nescq) {
1601 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1602 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1603 return ERR_PTR(-ENOMEM);
1604 }
1605
1606 nescq->hw_cq.cq_size = max(entries + 1, 5);
1607 nescq->hw_cq.cq_number = cq_num;
1608 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1609
1610
1611 if (context) {
1612 nes_ucontext = to_nesucontext(context);
1613 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1614 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1615 kfree(nescq);
1616 return ERR_PTR(-EFAULT);
1617 }
1618 nesvnic->mcrq_ucontext = nes_ucontext;
1619 nes_ucontext->mcrqf = req.mcrqf;
1620 if (nes_ucontext->mcrqf) {
1621 if (nes_ucontext->mcrqf & 0x80000000)
1622 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1623 else if (nes_ucontext->mcrqf & 0x40000000)
1624 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1625 else
1626 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1627 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1628 }
1629 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1630 (unsigned long)req.user_cq_buffer, entries);
1631 err = 1;
1632 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1633 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1634 list_del(&nespbl->list);
1635 err = 0;
1636 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1637 nespbl);
1638 break;
1639 }
1640 }
1641 if (err) {
1642 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1643 kfree(nescq);
1644 return ERR_PTR(-EFAULT);
1645 }
1646
1647 pbl_entries = nespbl->pbl_size >> 3;
1648 nescq->cq_mem_size = 0;
1649 } else {
1650 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1651 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1652 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1653
1654 /* allocate the physical buffer space */
1655 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1656 &nescq->hw_cq.cq_pbase);
1657 if (!mem) {
1658 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1659 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1660 kfree(nescq);
1661 return ERR_PTR(-ENOMEM);
1662 }
1663
1664 memset(mem, 0, nescq->cq_mem_size);
1665 nescq->hw_cq.cq_vbase = mem;
1666 nescq->hw_cq.cq_head = 0;
1667 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1668 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1669 (u32)nescq->hw_cq.cq_pbase);
1670 }
1671
1672 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1673 spin_lock_init(&nescq->lock);
1674
1675 /* send CreateCQ request to CQP */
1676 cqp_request = nes_get_cqp_request(nesdev);
1677 if (cqp_request == NULL) {
1678 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1679 if (!context)
1680 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1681 nescq->hw_cq.cq_pbase);
1682 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1683 kfree(nescq);
1684 return ERR_PTR(-ENOMEM);
1685 }
1686 cqp_request->waiting = 1;
1687 cqp_wqe = &cqp_request->cqp_wqe;
1688
1689 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1690 NES_CQP_CQ_CHK_OVERFLOW |
1691 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1692
1693 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1694
1695 if (pbl_entries != 1) {
1696 if (pbl_entries > 32) {
1697 /* use 4k pbl */
1698 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1699 if (nesadapter->free_4kpbl == 0) {
1700 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1701 nes_free_cqp_request(nesdev, cqp_request);
1702 if (!context)
1703 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1704 nescq->hw_cq.cq_pbase);
1705 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1706 kfree(nescq);
1707 return ERR_PTR(-ENOMEM);
1708 } else {
1709 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1710 nescq->virtual_cq = 2;
1711 nesadapter->free_4kpbl--;
1712 }
1713 } else {
1714 /* use 256 byte pbl */
1715 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1716 if (nesadapter->free_256pbl == 0) {
1717 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1718 nes_free_cqp_request(nesdev, cqp_request);
1719 if (!context)
1720 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1721 nescq->hw_cq.cq_pbase);
1722 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1723 kfree(nescq);
1724 return ERR_PTR(-ENOMEM);
1725 } else {
1726 opcode |= NES_CQP_CQ_VIRT;
1727 nescq->virtual_cq = 1;
1728 nesadapter->free_256pbl--;
1729 }
1730 }
1731 }
1732
1733 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1734
1735 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1736 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1737 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1738 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1739
1740 if (context) {
1741 if (pbl_entries != 1)
1742 u64temp = (u64)nespbl->pbl_pbase;
1743 else
1744 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1745 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1746 nes_ucontext->mmap_db_index[0]);
1747 } else {
1748 u64temp = (u64)nescq->hw_cq.cq_pbase;
1749 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1750 }
1751 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1752 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1753 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1754 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1755 cpu_to_le32((u32)(u64temp >> 1));
1756 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1757 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1758
1759 atomic_set(&cqp_request->refcount, 2);
1760 nes_post_cqp_request(nesdev, cqp_request);
1761
1762 /* Wait for CQP */
1763 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1764 nescq->hw_cq.cq_number);
1765 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1766 NES_EVENT_TIMEOUT * 2);
1767 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1768 nescq->hw_cq.cq_number, ret);
1769 if ((!ret) || (cqp_request->major_code)) {
1770 nes_put_cqp_request(nesdev, cqp_request);
1771 if (!context)
1772 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1773 nescq->hw_cq.cq_pbase);
1774 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1775 kfree(nescq);
1776 return ERR_PTR(-EIO);
1777 }
1778 nes_put_cqp_request(nesdev, cqp_request);
1779
1780 if (context) {
1781 /* free the nespbl */
1782 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1783 nespbl->pbl_pbase);
1784 kfree(nespbl);
1785 resp.cq_id = nescq->hw_cq.cq_number;
1786 resp.cq_size = nescq->hw_cq.cq_size;
1787 resp.mmap_db_index = 0;
1788 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1789 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1790 kfree(nescq);
1791 return ERR_PTR(-EFAULT);
1792 }
1793 }
1794
1795 return &nescq->ibcq;
1796 }
1797
1798
1799 /**
1800 * nes_destroy_cq
1801 */
1802 static int nes_destroy_cq(struct ib_cq *ib_cq)
1803 {
1804 struct nes_cq *nescq;
1805 struct nes_device *nesdev;
1806 struct nes_vnic *nesvnic;
1807 struct nes_adapter *nesadapter;
1808 struct nes_hw_cqp_wqe *cqp_wqe;
1809 struct nes_cqp_request *cqp_request;
1810 unsigned long flags;
1811 u32 opcode = 0;
1812 int ret;
1813
1814 if (ib_cq == NULL)
1815 return 0;
1816
1817 nescq = to_nescq(ib_cq);
1818 nesvnic = to_nesvnic(ib_cq->device);
1819 nesdev = nesvnic->nesdev;
1820 nesadapter = nesdev->nesadapter;
1821
1822 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1823
1824 /* Send DestroyCQ request to CQP */
1825 cqp_request = nes_get_cqp_request(nesdev);
1826 if (cqp_request == NULL) {
1827 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1828 return -ENOMEM;
1829 }
1830 cqp_request->waiting = 1;
1831 cqp_wqe = &cqp_request->cqp_wqe;
1832 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1833 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1834 if (nescq->virtual_cq == 1) {
1835 nesadapter->free_256pbl++;
1836 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1837 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1838 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1839 }
1840 } else if (nescq->virtual_cq == 2) {
1841 nesadapter->free_4kpbl++;
1842 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1843 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1844 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1845 }
1846 opcode |= NES_CQP_CQ_4KB_CHUNK;
1847 }
1848
1849 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1850
1851 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1852 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1853 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1854 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1855 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1856 atomic_set(&cqp_request->refcount, 2);
1857 nes_post_cqp_request(nesdev, cqp_request);
1858
1859 /* Wait for CQP */
1860 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1861 nescq->hw_cq.cq_number);
1862 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1863 NES_EVENT_TIMEOUT);
1864 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1865 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1866 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1867 cqp_request->minor_code);
1868 if (!ret) {
1869 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1870 nescq->hw_cq.cq_number);
1871 ret = -ETIME;
1872 } else if (cqp_request->major_code) {
1873 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1874 nescq->hw_cq.cq_number);
1875 ret = -EIO;
1876 } else {
1877 ret = 0;
1878 }
1879 nes_put_cqp_request(nesdev, cqp_request);
1880
1881 if (nescq->cq_mem_size)
1882 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1883 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1884 kfree(nescq);
1885
1886 return ret;
1887 }
1888
1889
1890 /**
1891 * nes_reg_mr
1892 */
1893 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1894 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1895 dma_addr_t single_buffer, u16 pbl_count, u16 residual_page_count,
1896 int acc, u64 *iova_start)
1897 {
1898 struct nes_hw_cqp_wqe *cqp_wqe;
1899 struct nes_cqp_request *cqp_request;
1900 unsigned long flags;
1901 int ret;
1902 struct nes_adapter *nesadapter = nesdev->nesadapter;
1903 /* int count; */
1904 u32 opcode = 0;
1905 u16 major_code;
1906
1907 /* Register the region with the adapter */
1908 cqp_request = nes_get_cqp_request(nesdev);
1909 if (cqp_request == NULL) {
1910 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1911 return -ENOMEM;
1912 }
1913 cqp_request->waiting = 1;
1914 cqp_wqe = &cqp_request->cqp_wqe;
1915
1916 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1917 /* track PBL resources */
1918 if (pbl_count != 0) {
1919 if (pbl_count > 1) {
1920 /* Two level PBL */
1921 if ((pbl_count+1) > nesadapter->free_4kpbl) {
1922 nes_debug(NES_DBG_MR, "Out of 4KB Pbls for two level request.\n");
1923 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1924 nes_free_cqp_request(nesdev, cqp_request);
1925 return -ENOMEM;
1926 } else {
1927 nesadapter->free_4kpbl -= pbl_count+1;
1928 }
1929 } else if (residual_page_count > 32) {
1930 if (pbl_count > nesadapter->free_4kpbl) {
1931 nes_debug(NES_DBG_MR, "Out of 4KB Pbls.\n");
1932 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1933 nes_free_cqp_request(nesdev, cqp_request);
1934 return -ENOMEM;
1935 } else {
1936 nesadapter->free_4kpbl -= pbl_count;
1937 }
1938 } else {
1939 if (pbl_count > nesadapter->free_256pbl) {
1940 nes_debug(NES_DBG_MR, "Out of 256B Pbls.\n");
1941 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1942 nes_free_cqp_request(nesdev, cqp_request);
1943 return -ENOMEM;
1944 } else {
1945 nesadapter->free_256pbl -= pbl_count;
1946 }
1947 }
1948 }
1949
1950 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1951
1952 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
1953 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
1954 if (acc & IB_ACCESS_LOCAL_WRITE)
1955 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
1956 if (acc & IB_ACCESS_REMOTE_WRITE)
1957 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
1958 if (acc & IB_ACCESS_REMOTE_READ)
1959 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
1960 if (acc & IB_ACCESS_MW_BIND)
1961 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
1962
1963 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1964 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1965 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
1966 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
1967
1968 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
1969 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
1970 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
1971 cpu_to_le32(nespd->pd_id & 0x00007fff);
1972 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
1973
1974 if (pbl_count == 0) {
1975 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
1976 } else {
1977 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
1978 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
1979 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX,
1980 (((pbl_count - 1) * 4096) + (residual_page_count*8)));
1981
1982 if ((pbl_count > 1) || (residual_page_count > 32))
1983 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
1984 }
1985 barrier();
1986
1987 atomic_set(&cqp_request->refcount, 2);
1988 nes_post_cqp_request(nesdev, cqp_request);
1989
1990 /* Wait for CQP */
1991 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1992 NES_EVENT_TIMEOUT);
1993 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
1994 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1995 stag, ret, cqp_request->major_code, cqp_request->minor_code);
1996 major_code = cqp_request->major_code;
1997 nes_put_cqp_request(nesdev, cqp_request);
1998
1999 if (!ret)
2000 return -ETIME;
2001 else if (major_code)
2002 return -EIO;
2003 else
2004 return 0;
2005
2006 return 0;
2007 }
2008
2009
2010 /**
2011 * nes_reg_phys_mr
2012 */
2013 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2014 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2015 u64 * iova_start)
2016 {
2017 u64 region_length;
2018 struct nes_pd *nespd = to_nespd(ib_pd);
2019 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2020 struct nes_device *nesdev = nesvnic->nesdev;
2021 struct nes_adapter *nesadapter = nesdev->nesadapter;
2022 struct nes_mr *nesmr;
2023 struct ib_mr *ibmr;
2024 struct nes_vpbl vpbl;
2025 struct nes_root_vpbl root_vpbl;
2026 u32 stag;
2027 u32 i;
2028 u32 stag_index = 0;
2029 u32 next_stag_index = 0;
2030 u32 driver_key = 0;
2031 u32 root_pbl_index = 0;
2032 u32 cur_pbl_index = 0;
2033 int err = 0, pbl_depth = 0;
2034 int ret = 0;
2035 u16 pbl_count = 0;
2036 u8 single_page = 1;
2037 u8 stag_key = 0;
2038
2039 pbl_depth = 0;
2040 region_length = 0;
2041 vpbl.pbl_vbase = NULL;
2042 root_vpbl.pbl_vbase = NULL;
2043 root_vpbl.pbl_pbase = 0;
2044
2045 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2046 stag_key = (u8)next_stag_index;
2047
2048 driver_key = 0;
2049
2050 next_stag_index >>= 8;
2051 next_stag_index %= nesadapter->max_mr;
2052 if (num_phys_buf > (1024*512)) {
2053 return ERR_PTR(-E2BIG);
2054 }
2055
2056 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2057 &stag_index, &next_stag_index);
2058 if (err) {
2059 return ERR_PTR(err);
2060 }
2061
2062 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2063 if (!nesmr) {
2064 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2065 return ERR_PTR(-ENOMEM);
2066 }
2067
2068 for (i = 0; i < num_phys_buf; i++) {
2069
2070 if ((i & 0x01FF) == 0) {
2071 if (root_pbl_index == 1) {
2072 /* Allocate the root PBL */
2073 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2074 &root_vpbl.pbl_pbase);
2075 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2076 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2077 if (!root_vpbl.pbl_vbase) {
2078 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2079 vpbl.pbl_pbase);
2080 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2081 kfree(nesmr);
2082 return ERR_PTR(-ENOMEM);
2083 }
2084 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2085 if (!root_vpbl.leaf_vpbl) {
2086 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2087 root_vpbl.pbl_pbase);
2088 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2089 vpbl.pbl_pbase);
2090 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2091 kfree(nesmr);
2092 return ERR_PTR(-ENOMEM);
2093 }
2094 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2095 root_vpbl.pbl_vbase[0].pa_high =
2096 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2097 root_vpbl.leaf_vpbl[0] = vpbl;
2098 }
2099 /* Allocate a 4K buffer for the PBL */
2100 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2101 &vpbl.pbl_pbase);
2102 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2103 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2104 if (!vpbl.pbl_vbase) {
2105 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2106 ibmr = ERR_PTR(-ENOMEM);
2107 kfree(nesmr);
2108 goto reg_phys_err;
2109 }
2110 /* Fill in the root table */
2111 if (1 <= root_pbl_index) {
2112 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2113 cpu_to_le32((u32)vpbl.pbl_pbase);
2114 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2115 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2116 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2117 }
2118 root_pbl_index++;
2119 cur_pbl_index = 0;
2120 }
2121 if (buffer_list[i].addr & ~PAGE_MASK) {
2122 /* TODO: Unwind allocated buffers */
2123 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2124 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2125 (unsigned int) buffer_list[i].addr);
2126 ibmr = ERR_PTR(-EINVAL);
2127 kfree(nesmr);
2128 goto reg_phys_err;
2129 }
2130
2131 if (!buffer_list[i].size) {
2132 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2133 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2134 ibmr = ERR_PTR(-EINVAL);
2135 kfree(nesmr);
2136 goto reg_phys_err;
2137 }
2138
2139 region_length += buffer_list[i].size;
2140 if ((i != 0) && (single_page)) {
2141 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2142 single_page = 0;
2143 }
2144 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr);
2145 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2146 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2147 }
2148
2149 stag = stag_index << 8;
2150 stag |= driver_key;
2151 stag += (u32)stag_key;
2152
2153 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2154 " length = 0x%016lX, index = 0x%08X\n",
2155 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2156
2157 region_length -= (*iova_start)&PAGE_MASK;
2158
2159 /* Make the leaf PBL the root if only one PBL */
2160 if (root_pbl_index == 1) {
2161 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2162 }
2163
2164 if (single_page) {
2165 pbl_count = 0;
2166 } else {
2167 pbl_count = root_pbl_index;
2168 }
2169 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2170 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start);
2171
2172 if (ret == 0) {
2173 nesmr->ibmr.rkey = stag;
2174 nesmr->ibmr.lkey = stag;
2175 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2176 ibmr = &nesmr->ibmr;
2177 nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
2178 nesmr->pbls_used = pbl_count;
2179 if (pbl_count > 1) {
2180 nesmr->pbls_used++;
2181 }
2182 } else {
2183 kfree(nesmr);
2184 ibmr = ERR_PTR(-ENOMEM);
2185 }
2186
2187 reg_phys_err:
2188 /* free the resources */
2189 if (root_pbl_index == 1) {
2190 /* single PBL case */
2191 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2192 } else {
2193 for (i=0; i<root_pbl_index; i++) {
2194 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2195 root_vpbl.leaf_vpbl[i].pbl_pbase);
2196 }
2197 kfree(root_vpbl.leaf_vpbl);
2198 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2199 root_vpbl.pbl_pbase);
2200 }
2201
2202 return ibmr;
2203 }
2204
2205
2206 /**
2207 * nes_get_dma_mr
2208 */
2209 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2210 {
2211 struct ib_phys_buf bl;
2212 u64 kva = 0;
2213
2214 nes_debug(NES_DBG_MR, "\n");
2215
2216 bl.size = (u64)0xffffffffffULL;
2217 bl.addr = 0;
2218 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2219 }
2220
2221
2222 /**
2223 * nes_reg_user_mr
2224 */
2225 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2226 u64 virt, int acc, struct ib_udata *udata)
2227 {
2228 u64 iova_start;
2229 __le64 *pbl;
2230 u64 region_length;
2231 dma_addr_t last_dma_addr = 0;
2232 dma_addr_t first_dma_addr = 0;
2233 struct nes_pd *nespd = to_nespd(pd);
2234 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2235 struct nes_device *nesdev = nesvnic->nesdev;
2236 struct nes_adapter *nesadapter = nesdev->nesadapter;
2237 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2238 struct ib_umem_chunk *chunk;
2239 struct nes_ucontext *nes_ucontext;
2240 struct nes_pbl *nespbl;
2241 struct nes_mr *nesmr;
2242 struct ib_umem *region;
2243 struct nes_mem_reg_req req;
2244 struct nes_vpbl vpbl;
2245 struct nes_root_vpbl root_vpbl;
2246 int nmap_index, page_index;
2247 int page_count = 0;
2248 int err, pbl_depth = 0;
2249 int chunk_pages;
2250 int ret;
2251 u32 stag;
2252 u32 stag_index = 0;
2253 u32 next_stag_index;
2254 u32 driver_key;
2255 u32 root_pbl_index = 0;
2256 u32 cur_pbl_index = 0;
2257 u32 skip_pages;
2258 u16 pbl_count;
2259 u8 single_page = 1;
2260 u8 stag_key;
2261
2262 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2263 if (IS_ERR(region)) {
2264 return (struct ib_mr *)region;
2265 }
2266
2267 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2268 " offset = %u, page size = %u.\n",
2269 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2270 region->offset, region->page_size);
2271
2272 skip_pages = ((u32)region->offset) >> 12;
2273
2274 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2275 return ERR_PTR(-EFAULT);
2276 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2277
2278 switch (req.reg_type) {
2279 case IWNES_MEMREG_TYPE_MEM:
2280 pbl_depth = 0;
2281 region_length = 0;
2282 vpbl.pbl_vbase = NULL;
2283 root_vpbl.pbl_vbase = NULL;
2284 root_vpbl.pbl_pbase = 0;
2285
2286 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2287 stag_key = (u8)next_stag_index;
2288
2289 driver_key = next_stag_index & 0x70000000;
2290
2291 next_stag_index >>= 8;
2292 next_stag_index %= nesadapter->max_mr;
2293
2294 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2295 nesadapter->max_mr, &stag_index, &next_stag_index);
2296 if (err) {
2297 ib_umem_release(region);
2298 return ERR_PTR(err);
2299 }
2300
2301 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2302 if (!nesmr) {
2303 ib_umem_release(region);
2304 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2305 return ERR_PTR(-ENOMEM);
2306 }
2307 nesmr->region = region;
2308
2309 list_for_each_entry(chunk, &region->chunk_list, list) {
2310 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2311 chunk->nents, chunk->nmap);
2312 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2313 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2314 ib_umem_release(region);
2315 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2316 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2317 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2318 ibmr = ERR_PTR(-EINVAL);
2319 kfree(nesmr);
2320 goto reg_user_mr_err;
2321 }
2322
2323 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2324 ib_umem_release(region);
2325 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2326 stag_index);
2327 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2328 ibmr = ERR_PTR(-EINVAL);
2329 kfree(nesmr);
2330 goto reg_user_mr_err;
2331 }
2332
2333 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2334 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2335 region_length -= skip_pages << 12;
2336 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2337 skip_pages = 0;
2338 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2339 goto enough_pages;
2340 if ((page_count&0x01FF) == 0) {
2341 if (page_count >= 1024 * 512) {
2342 ib_umem_release(region);
2343 nes_free_resource(nesadapter,
2344 nesadapter->allocated_mrs, stag_index);
2345 kfree(nesmr);
2346 ibmr = ERR_PTR(-E2BIG);
2347 goto reg_user_mr_err;
2348 }
2349 if (root_pbl_index == 1) {
2350 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2351 8192, &root_vpbl.pbl_pbase);
2352 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2353 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2354 if (!root_vpbl.pbl_vbase) {
2355 ib_umem_release(region);
2356 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2357 vpbl.pbl_pbase);
2358 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2359 stag_index);
2360 kfree(nesmr);
2361 ibmr = ERR_PTR(-ENOMEM);
2362 goto reg_user_mr_err;
2363 }
2364 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2365 GFP_KERNEL);
2366 if (!root_vpbl.leaf_vpbl) {
2367 ib_umem_release(region);
2368 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2369 root_vpbl.pbl_pbase);
2370 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2371 vpbl.pbl_pbase);
2372 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2373 stag_index);
2374 kfree(nesmr);
2375 ibmr = ERR_PTR(-ENOMEM);
2376 goto reg_user_mr_err;
2377 }
2378 root_vpbl.pbl_vbase[0].pa_low =
2379 cpu_to_le32((u32)vpbl.pbl_pbase);
2380 root_vpbl.pbl_vbase[0].pa_high =
2381 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2382 root_vpbl.leaf_vpbl[0] = vpbl;
2383 }
2384 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2385 &vpbl.pbl_pbase);
2386 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2387 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2388 if (!vpbl.pbl_vbase) {
2389 ib_umem_release(region);
2390 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2391 ibmr = ERR_PTR(-ENOMEM);
2392 kfree(nesmr);
2393 goto reg_user_mr_err;
2394 }
2395 if (1 <= root_pbl_index) {
2396 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2397 cpu_to_le32((u32)vpbl.pbl_pbase);
2398 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2399 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2400 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2401 }
2402 root_pbl_index++;
2403 cur_pbl_index = 0;
2404 }
2405 if (single_page) {
2406 if (page_count != 0) {
2407 if ((last_dma_addr+4096) !=
2408 (sg_dma_address(&chunk->page_list[nmap_index])+
2409 (page_index*4096)))
2410 single_page = 0;
2411 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2412 (page_index*4096);
2413 } else {
2414 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2415 (page_index*4096);
2416 last_dma_addr = first_dma_addr;
2417 }
2418 }
2419
2420 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2421 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2422 (page_index*4096)));
2423 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2424 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2425 (page_index*4096))) >> 32)));
2426 cur_pbl_index++;
2427 page_count++;
2428 }
2429 }
2430 }
2431 enough_pages:
2432 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2433 " stag_key=0x%08x\n",
2434 stag_index, driver_key, stag_key);
2435 stag = stag_index << 8;
2436 stag |= driver_key;
2437 stag += (u32)stag_key;
2438 if (stag == 0) {
2439 stag = 1;
2440 }
2441
2442 iova_start = virt;
2443 /* Make the leaf PBL the root if only one PBL */
2444 if (root_pbl_index == 1) {
2445 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2446 }
2447
2448 if (single_page) {
2449 pbl_count = 0;
2450 } else {
2451 pbl_count = root_pbl_index;
2452 first_dma_addr = 0;
2453 }
2454 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2455 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2456 stag, (unsigned int)iova_start,
2457 (unsigned int)region_length, stag_index,
2458 (unsigned long long)region->length, pbl_count);
2459 ret = nes_reg_mr( nesdev, nespd, stag, region->length, &root_vpbl,
2460 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc, &iova_start);
2461
2462 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2463
2464 if (ret == 0) {
2465 nesmr->ibmr.rkey = stag;
2466 nesmr->ibmr.lkey = stag;
2467 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2468 ibmr = &nesmr->ibmr;
2469 nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
2470 nesmr->pbls_used = pbl_count;
2471 if (pbl_count > 1) {
2472 nesmr->pbls_used++;
2473 }
2474 } else {
2475 ib_umem_release(region);
2476 kfree(nesmr);
2477 ibmr = ERR_PTR(-ENOMEM);
2478 }
2479
2480 reg_user_mr_err:
2481 /* free the resources */
2482 if (root_pbl_index == 1) {
2483 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2484 vpbl.pbl_pbase);
2485 } else {
2486 for (page_index=0; page_index<root_pbl_index; page_index++) {
2487 pci_free_consistent(nesdev->pcidev, 4096,
2488 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2489 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2490 }
2491 kfree(root_vpbl.leaf_vpbl);
2492 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2493 root_vpbl.pbl_pbase);
2494 }
2495
2496 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2497
2498 return ibmr;
2499 case IWNES_MEMREG_TYPE_QP:
2500 case IWNES_MEMREG_TYPE_CQ:
2501 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2502 if (!nespbl) {
2503 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2504 ib_umem_release(region);
2505 return ERR_PTR(-ENOMEM);
2506 }
2507 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2508 if (!nesmr) {
2509 ib_umem_release(region);
2510 kfree(nespbl);
2511 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2512 return ERR_PTR(-ENOMEM);
2513 }
2514 nesmr->region = region;
2515 nes_ucontext = to_nesucontext(pd->uobject->context);
2516 pbl_depth = region->length >> 12;
2517 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2518 nespbl->pbl_size = pbl_depth*sizeof(u64);
2519 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2520 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2521 } else {
2522 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2523 }
2524
2525 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2526 nespbl->pbl_size, pbl_depth);
2527 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2528 &nespbl->pbl_pbase);
2529 if (!pbl) {
2530 ib_umem_release(region);
2531 kfree(nesmr);
2532 kfree(nespbl);
2533 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2534 return ERR_PTR(-ENOMEM);
2535 }
2536
2537 nespbl->pbl_vbase = (u64 *)pbl;
2538 nespbl->user_base = start;
2539 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2540 " pbl_vbase=%p user_base=0x%lx\n",
2541 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2542 (void *) nespbl->pbl_vbase, nespbl->user_base);
2543
2544 list_for_each_entry(chunk, &region->chunk_list, list) {
2545 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2546 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2547 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2548 nespbl->page = sg_page(&chunk->page_list[0]);
2549 for (page_index=0; page_index<chunk_pages; page_index++) {
2550 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2551 (sg_dma_address(&chunk->page_list[nmap_index])+
2552 (page_index*4096)));
2553 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2554 (sg_dma_address(&chunk->page_list[nmap_index])+
2555 (page_index*4096)))>>32);
2556 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2557 (unsigned long long)*pbl,
2558 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2559 pbl++;
2560 }
2561 }
2562 }
2563 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2564 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2565 } else {
2566 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2567 }
2568 nesmr->ibmr.rkey = -1;
2569 nesmr->ibmr.lkey = -1;
2570 nesmr->mode = req.reg_type;
2571 return &nesmr->ibmr;
2572 }
2573
2574 return ERR_PTR(-ENOSYS);
2575 }
2576
2577
2578 /**
2579 * nes_dereg_mr
2580 */
2581 static int nes_dereg_mr(struct ib_mr *ib_mr)
2582 {
2583 struct nes_mr *nesmr = to_nesmr(ib_mr);
2584 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2585 struct nes_device *nesdev = nesvnic->nesdev;
2586 struct nes_adapter *nesadapter = nesdev->nesadapter;
2587 struct nes_hw_cqp_wqe *cqp_wqe;
2588 struct nes_cqp_request *cqp_request;
2589 unsigned long flags;
2590 int ret;
2591 u16 major_code;
2592 u16 minor_code;
2593
2594 if (nesmr->region) {
2595 ib_umem_release(nesmr->region);
2596 }
2597 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2598 kfree(nesmr);
2599 return 0;
2600 }
2601
2602 /* Deallocate the region with the adapter */
2603
2604 cqp_request = nes_get_cqp_request(nesdev);
2605 if (cqp_request == NULL) {
2606 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2607 return -ENOMEM;
2608 }
2609 cqp_request->waiting = 1;
2610 cqp_wqe = &cqp_request->cqp_wqe;
2611
2612 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2613 if (nesmr->pbls_used != 0) {
2614 if (nesmr->pbl_4k) {
2615 nesadapter->free_4kpbl += nesmr->pbls_used;
2616 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
2617 printk(KERN_ERR PFX "free 4KB PBLs(%u) has exceeded the max(%u)\n",
2618 nesadapter->free_4kpbl, nesadapter->max_4kpbl);
2619 }
2620 } else {
2621 nesadapter->free_256pbl += nesmr->pbls_used;
2622 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
2623 printk(KERN_ERR PFX "free 256B PBLs(%u) has exceeded the max(%u)\n",
2624 nesadapter->free_256pbl, nesadapter->max_256pbl);
2625 }
2626 }
2627 }
2628
2629 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2630 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2631 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2632 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2633 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2634 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2635
2636 atomic_set(&cqp_request->refcount, 2);
2637 nes_post_cqp_request(nesdev, cqp_request);
2638
2639 /* Wait for CQP */
2640 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2641 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2642 NES_EVENT_TIMEOUT);
2643 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2644 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2645 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2646
2647 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2648 (ib_mr->rkey & 0x0fffff00) >> 8);
2649
2650 kfree(nesmr);
2651
2652 major_code = cqp_request->major_code;
2653 minor_code = cqp_request->minor_code;
2654
2655 nes_put_cqp_request(nesdev, cqp_request);
2656
2657 if (!ret) {
2658 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2659 " ib_mr=%p, rkey = 0x%08X\n",
2660 ib_mr, ib_mr->rkey);
2661 return -ETIME;
2662 } else if (major_code) {
2663 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2664 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2665 major_code, minor_code, ib_mr, ib_mr->rkey);
2666 return -EIO;
2667 } else
2668 return 0;
2669 }
2670
2671
2672 /**
2673 * show_rev
2674 */
2675 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2676 char *buf)
2677 {
2678 struct nes_ib_device *nesibdev =
2679 container_of(dev, struct nes_ib_device, ibdev.dev);
2680 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2681
2682 nes_debug(NES_DBG_INIT, "\n");
2683 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2684 }
2685
2686
2687 /**
2688 * show_fw_ver
2689 */
2690 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2691 char *buf)
2692 {
2693 struct nes_ib_device *nesibdev =
2694 container_of(dev, struct nes_ib_device, ibdev.dev);
2695 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2696
2697 nes_debug(NES_DBG_INIT, "\n");
2698 return sprintf(buf, "%x.%x.%x\n",
2699 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 32),
2700 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 16) & 0xffff,
2701 (int)(nesvnic->nesdev->nesadapter->fw_ver & 0xffff));
2702 }
2703
2704
2705 /**
2706 * show_hca
2707 */
2708 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2709 char *buf)
2710 {
2711 nes_debug(NES_DBG_INIT, "\n");
2712 return sprintf(buf, "NES020\n");
2713 }
2714
2715
2716 /**
2717 * show_board
2718 */
2719 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2720 char *buf)
2721 {
2722 nes_debug(NES_DBG_INIT, "\n");
2723 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2724 }
2725
2726
2727 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2728 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2729 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2730 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2731
2732 static struct device_attribute *nes_dev_attributes[] = {
2733 &dev_attr_hw_rev,
2734 &dev_attr_fw_ver,
2735 &dev_attr_hca_type,
2736 &dev_attr_board_id
2737 };
2738
2739
2740 /**
2741 * nes_query_qp
2742 */
2743 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2744 int attr_mask, struct ib_qp_init_attr *init_attr)
2745 {
2746 struct nes_qp *nesqp = to_nesqp(ibqp);
2747
2748 nes_debug(NES_DBG_QP, "\n");
2749
2750 attr->qp_access_flags = 0;
2751 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2752 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2753 attr->cap.max_recv_sge = 1;
2754 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2755 init_attr->cap.max_inline_data = 0;
2756 } else {
2757 init_attr->cap.max_inline_data = 64;
2758 }
2759
2760 init_attr->event_handler = nesqp->ibqp.event_handler;
2761 init_attr->qp_context = nesqp->ibqp.qp_context;
2762 init_attr->send_cq = nesqp->ibqp.send_cq;
2763 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2764 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2765 init_attr->cap = attr->cap;
2766
2767 return 0;
2768 }
2769
2770
2771 /**
2772 * nes_hw_modify_qp
2773 */
2774 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2775 u32 next_iwarp_state, u32 wait_completion)
2776 {
2777 struct nes_hw_cqp_wqe *cqp_wqe;
2778 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2779 /* struct iw_cm_event cm_event; */
2780 struct nes_cqp_request *cqp_request;
2781 int ret;
2782 u16 major_code;
2783
2784 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2785 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2786
2787 cqp_request = nes_get_cqp_request(nesdev);
2788 if (cqp_request == NULL) {
2789 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2790 return -ENOMEM;
2791 }
2792 if (wait_completion) {
2793 cqp_request->waiting = 1;
2794 } else {
2795 cqp_request->waiting = 0;
2796 }
2797 cqp_wqe = &cqp_request->cqp_wqe;
2798
2799 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2800 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2801 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2802 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2803 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2804 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2805 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2806
2807 atomic_set(&cqp_request->refcount, 2);
2808 nes_post_cqp_request(nesdev, cqp_request);
2809
2810 /* Wait for CQP */
2811 if (wait_completion) {
2812 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2813 nesqp->hwqp.qp_id); */
2814 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2815 NES_EVENT_TIMEOUT);
2816 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2817 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2818 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2819 major_code = cqp_request->major_code;
2820 if (major_code) {
2821 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2822 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2823 nesqp->hwqp.qp_id, cqp_request->major_code,
2824 cqp_request->minor_code, next_iwarp_state);
2825 }
2826
2827 nes_put_cqp_request(nesdev, cqp_request);
2828
2829 if (!ret)
2830 return -ETIME;
2831 else if (major_code)
2832 return -EIO;
2833 else
2834 return 0;
2835 } else {
2836 return 0;
2837 }
2838 }
2839
2840
2841 /**
2842 * nes_modify_qp
2843 */
2844 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2845 int attr_mask, struct ib_udata *udata)
2846 {
2847 struct nes_qp *nesqp = to_nesqp(ibqp);
2848 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2849 struct nes_device *nesdev = nesvnic->nesdev;
2850 /* u32 cqp_head; */
2851 /* u32 counter; */
2852 u32 next_iwarp_state = 0;
2853 int err;
2854 unsigned long qplockflags;
2855 int ret;
2856 u16 original_last_aeq;
2857 u8 issue_modify_qp = 0;
2858 u8 issue_disconnect = 0;
2859 u8 dont_wait = 0;
2860
2861 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2862 " iwarp_state=0x%X, refcount=%d\n",
2863 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2864 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2865
2866 spin_lock_irqsave(&nesqp->lock, qplockflags);
2867
2868 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2869 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2870 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2871 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2872
2873 if (attr_mask & IB_QP_STATE) {
2874 switch (attr->qp_state) {
2875 case IB_QPS_INIT:
2876 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2877 nesqp->hwqp.qp_id);
2878 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2879 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2880 return -EINVAL;
2881 }
2882 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2883 issue_modify_qp = 1;
2884 break;
2885 case IB_QPS_RTR:
2886 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2887 nesqp->hwqp.qp_id);
2888 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2889 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2890 return -EINVAL;
2891 }
2892 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2893 issue_modify_qp = 1;
2894 break;
2895 case IB_QPS_RTS:
2896 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2897 nesqp->hwqp.qp_id);
2898 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2899 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2900 return -EINVAL;
2901 }
2902 if (nesqp->cm_id == NULL) {
2903 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2904 nesqp->hwqp.qp_id );
2905 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2906 return -EINVAL;
2907 }
2908 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2909 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2910 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2911 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2912 issue_modify_qp = 1;
2913 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2914 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2915 nesqp->hte_added = 1;
2916 break;
2917 case IB_QPS_SQD:
2918 issue_modify_qp = 1;
2919 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2920 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2921 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2922 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2923 return 0;
2924 } else {
2925 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2926 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2927 " ignored due to current iWARP state\n",
2928 nesqp->hwqp.qp_id);
2929 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2930 return -EINVAL;
2931 }
2932 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
2933 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2934 " already done based on hw state.\n",
2935 nesqp->hwqp.qp_id);
2936 issue_modify_qp = 0;
2937 nesqp->in_disconnect = 0;
2938 }
2939 switch (nesqp->hw_iwarp_state) {
2940 case NES_AEQE_IWARP_STATE_CLOSING:
2941 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2942 case NES_AEQE_IWARP_STATE_TERMINATE:
2943 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2944 break;
2945 case NES_AEQE_IWARP_STATE_ERROR:
2946 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2947 break;
2948 default:
2949 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2950 nesqp->in_disconnect = 1;
2951 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
2952 break;
2953 }
2954 }
2955 break;
2956 case IB_QPS_SQE:
2957 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
2958 nesqp->hwqp.qp_id);
2959 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
2960 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2961 return -EINVAL;
2962 }
2963 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2964 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2965 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
2966 issue_modify_qp = 1;
2967 nesqp->in_disconnect = 1;
2968 break;
2969 case IB_QPS_ERR:
2970 case IB_QPS_RESET:
2971 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
2972 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2973 return -EINVAL;
2974 }
2975 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
2976 nesqp->hwqp.qp_id);
2977 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2978 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2979 if (nesqp->hte_added) {
2980 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
2981 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
2982 nesqp->hte_added = 0;
2983 }
2984 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
2985 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
2986 next_iwarp_state |= NES_CQP_QP_RESET;
2987 nesqp->in_disconnect = 1;
2988 } else {
2989 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
2990 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
2991 dont_wait = 1;
2992 }
2993 issue_modify_qp = 1;
2994 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
2995 break;
2996 default:
2997 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2998 return -EINVAL;
2999 break;
3000 }
3001
3002 nesqp->ibqp_state = attr->qp_state;
3003 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3004 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3005 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3006 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3007 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3008 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3009 nesqp->iwarp_state);
3010 issue_disconnect = 1;
3011 } else {
3012 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3013 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3014 nesqp->iwarp_state);
3015 }
3016 }
3017
3018 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3019 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3020 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3021 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3022 issue_modify_qp = 1;
3023 }
3024 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3025 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3026 issue_modify_qp = 1;
3027 }
3028 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3029 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3030 issue_modify_qp = 1;
3031 }
3032 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3033 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3034 issue_modify_qp = 1;
3035 }
3036
3037 if (nesqp->user_mode) {
3038 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3039 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3040 issue_modify_qp = 1;
3041 }
3042 }
3043
3044 original_last_aeq = nesqp->last_aeq;
3045 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3046
3047 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3048
3049 ret = 0;
3050
3051
3052 if (issue_modify_qp) {
3053 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3054 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
3055 if (ret)
3056 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3057 " failed for QP%u.\n",
3058 next_iwarp_state, nesqp->hwqp.qp_id);
3059
3060 }
3061
3062 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3063 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3064 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3065 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3066 original_last_aeq, nesqp->last_aeq);
3067 if ((!ret) ||
3068 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3069 (ret))) {
3070 if (dont_wait) {
3071 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3072 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3073 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3074 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3075 original_last_aeq, nesqp->last_aeq);
3076 /* this one is for the cm_disconnect thread */
3077 spin_lock_irqsave(&nesqp->lock, qplockflags);
3078 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3079 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3080 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3081 nes_cm_disconn(nesqp);
3082 } else {
3083 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3084 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3085 }
3086 } else {
3087 spin_lock_irqsave(&nesqp->lock, qplockflags);
3088 if (nesqp->cm_id) {
3089 /* These two are for the timer thread */
3090 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3091 nesqp->cm_id->add_ref(nesqp->cm_id);
3092 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3093 " need ae to finish up, original_last_aeq = 0x%04X."
3094 " last_aeq = 0x%04X, scheduling timer.\n",
3095 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3096 original_last_aeq, nesqp->last_aeq);
3097 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3098 }
3099 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3100 } else {
3101 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3102 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3103 " need ae to finish up, original_last_aeq = 0x%04X."
3104 " last_aeq = 0x%04X.\n",
3105 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3106 original_last_aeq, nesqp->last_aeq);
3107 }
3108 }
3109 } else {
3110 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3111 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3112 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3113 original_last_aeq, nesqp->last_aeq);
3114 }
3115 } else {
3116 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3117 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3118 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3119 original_last_aeq, nesqp->last_aeq);
3120 }
3121
3122 err = 0;
3123
3124 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3125 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3126
3127 return err;
3128 }
3129
3130
3131 /**
3132 * nes_muticast_attach
3133 */
3134 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3135 {
3136 nes_debug(NES_DBG_INIT, "\n");
3137 return -ENOSYS;
3138 }
3139
3140
3141 /**
3142 * nes_multicast_detach
3143 */
3144 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3145 {
3146 nes_debug(NES_DBG_INIT, "\n");
3147 return -ENOSYS;
3148 }
3149
3150
3151 /**
3152 * nes_process_mad
3153 */
3154 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3155 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3156 struct ib_mad *in_mad, struct ib_mad *out_mad)
3157 {
3158 nes_debug(NES_DBG_INIT, "\n");
3159 return -ENOSYS;
3160 }
3161
3162 static inline void
3163 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3164 {
3165 int sge_index;
3166 int total_payload_length = 0;
3167 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3168 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3169 ib_wr->sg_list[sge_index].addr);
3170 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3171 ib_wr->sg_list[sge_index].length);
3172 if (uselkey)
3173 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3174 (ib_wr->sg_list[sge_index].lkey));
3175 else
3176 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3177
3178 total_payload_length += ib_wr->sg_list[sge_index].length;
3179 }
3180 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3181 total_payload_length);
3182 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3183 total_payload_length);
3184 }
3185
3186 /**
3187 * nes_post_send
3188 */
3189 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3190 struct ib_send_wr **bad_wr)
3191 {
3192 u64 u64temp;
3193 unsigned long flags = 0;
3194 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3195 struct nes_device *nesdev = nesvnic->nesdev;
3196 struct nes_qp *nesqp = to_nesqp(ibqp);
3197 struct nes_hw_qp_wqe *wqe;
3198 int err;
3199 u32 qsize = nesqp->hwqp.sq_size;
3200 u32 head;
3201 u32 wqe_misc;
3202 u32 wqe_count;
3203 u32 counter;
3204 u32 total_payload_length;
3205
3206 err = 0;
3207 wqe_misc = 0;
3208 wqe_count = 0;
3209 total_payload_length = 0;
3210
3211 if (nesqp->ibqp_state > IB_QPS_RTS)
3212 return -EINVAL;
3213
3214 spin_lock_irqsave(&nesqp->lock, flags);
3215
3216 head = nesqp->hwqp.sq_head;
3217
3218 while (ib_wr) {
3219 /* Check for SQ overflow */
3220 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3221 err = -EINVAL;
3222 break;
3223 }
3224
3225 wqe = &nesqp->hwqp.sq_vbase[head];
3226 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3227 nesqp->hwqp.qp_id, wqe, head); */
3228 nes_fill_init_qp_wqe(wqe, nesqp, head);
3229 u64temp = (u64)(ib_wr->wr_id);
3230 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3231 u64temp);
3232 switch (ib_wr->opcode) {
3233 case IB_WR_SEND:
3234 if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3235 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3236 } else {
3237 wqe_misc = NES_IWARP_SQ_OP_SEND;
3238 }
3239 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3240 err = -EINVAL;
3241 break;
3242 }
3243 if (ib_wr->send_flags & IB_SEND_FENCE) {
3244 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3245 }
3246 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3247 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3248 (ib_wr->sg_list[0].length <= 64)) {
3249 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3250 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3251 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3252 ib_wr->sg_list[0].length);
3253 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3254 } else {
3255 fill_wqe_sg_send(wqe, ib_wr, 1);
3256 }
3257
3258 break;
3259 case IB_WR_RDMA_WRITE:
3260 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3261 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3262 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3263 ib_wr->num_sge,
3264 nesdev->nesadapter->max_sge);
3265 err = -EINVAL;
3266 break;
3267 }
3268 if (ib_wr->send_flags & IB_SEND_FENCE) {
3269 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3270 }
3271
3272 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3273 ib_wr->wr.rdma.rkey);
3274 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3275 ib_wr->wr.rdma.remote_addr);
3276
3277 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3278 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3279 (ib_wr->sg_list[0].length <= 64)) {
3280 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3281 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3282 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3283 ib_wr->sg_list[0].length);
3284 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3285 } else {
3286 fill_wqe_sg_send(wqe, ib_wr, 1);
3287 }
3288 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3289 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3290 break;
3291 case IB_WR_RDMA_READ:
3292 /* iWARP only supports 1 sge for RDMA reads */
3293 if (ib_wr->num_sge > 1) {
3294 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3295 ib_wr->num_sge);
3296 err = -EINVAL;
3297 break;
3298 }
3299 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3300 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3301 ib_wr->wr.rdma.remote_addr);
3302 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3303 ib_wr->wr.rdma.rkey);
3304 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3305 ib_wr->sg_list->length);
3306 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3307 ib_wr->sg_list->addr);
3308 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3309 ib_wr->sg_list->lkey);
3310 break;
3311 default:
3312 /* error */
3313 err = -EINVAL;
3314 break;
3315 }
3316
3317 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3318 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3319 }
3320 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3321
3322 ib_wr = ib_wr->next;
3323 head++;
3324 wqe_count++;
3325 if (head >= qsize)
3326 head = 0;
3327
3328 }
3329
3330 nesqp->hwqp.sq_head = head;
3331 barrier();
3332 while (wqe_count) {
3333 counter = min(wqe_count, ((u32)255));
3334 wqe_count -= counter;
3335 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3336 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3337 }
3338
3339 spin_unlock_irqrestore(&nesqp->lock, flags);
3340
3341 if (err)
3342 *bad_wr = ib_wr;
3343 return err;
3344 }
3345
3346
3347 /**
3348 * nes_post_recv
3349 */
3350 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3351 struct ib_recv_wr **bad_wr)
3352 {
3353 u64 u64temp;
3354 unsigned long flags = 0;
3355 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3356 struct nes_device *nesdev = nesvnic->nesdev;
3357 struct nes_qp *nesqp = to_nesqp(ibqp);
3358 struct nes_hw_qp_wqe *wqe;
3359 int err = 0;
3360 int sge_index;
3361 u32 qsize = nesqp->hwqp.rq_size;
3362 u32 head;
3363 u32 wqe_count = 0;
3364 u32 counter;
3365 u32 total_payload_length;
3366
3367 if (nesqp->ibqp_state > IB_QPS_RTS)
3368 return -EINVAL;
3369
3370 spin_lock_irqsave(&nesqp->lock, flags);
3371
3372 head = nesqp->hwqp.rq_head;
3373
3374 while (ib_wr) {
3375 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3376 err = -EINVAL;
3377 break;
3378 }
3379 /* Check for RQ overflow */
3380 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3381 err = -EINVAL;
3382 break;
3383 }
3384
3385 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3386 wqe = &nesqp->hwqp.rq_vbase[head];
3387
3388 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3389 nesqp->hwqp.qp_id, wqe, head); */
3390 nes_fill_init_qp_wqe(wqe, nesqp, head);
3391 u64temp = (u64)(ib_wr->wr_id);
3392 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3393 u64temp);
3394 total_payload_length = 0;
3395 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3396 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3397 ib_wr->sg_list[sge_index].addr);
3398 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3399 ib_wr->sg_list[sge_index].length);
3400 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3401 ib_wr->sg_list[sge_index].lkey);
3402
3403 total_payload_length += ib_wr->sg_list[sge_index].length;
3404 }
3405 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3406 total_payload_length);
3407
3408 ib_wr = ib_wr->next;
3409 head++;
3410 wqe_count++;
3411 if (head >= qsize)
3412 head = 0;
3413 }
3414
3415 nesqp->hwqp.rq_head = head;
3416 barrier();
3417 while (wqe_count) {
3418 counter = min(wqe_count, ((u32)255));
3419 wqe_count -= counter;
3420 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3421 }
3422
3423 spin_unlock_irqrestore(&nesqp->lock, flags);
3424
3425 if (err)
3426 *bad_wr = ib_wr;
3427 return err;
3428 }
3429
3430
3431 /**
3432 * nes_poll_cq
3433 */
3434 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3435 {
3436 u64 u64temp;
3437 u64 wrid;
3438 /* u64 u64temp; */
3439 unsigned long flags = 0;
3440 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3441 struct nes_device *nesdev = nesvnic->nesdev;
3442 struct nes_cq *nescq = to_nescq(ibcq);
3443 struct nes_qp *nesqp;
3444 struct nes_hw_cqe cqe;
3445 u32 head;
3446 u32 wq_tail;
3447 u32 cq_size;
3448 u32 cqe_count = 0;
3449 u32 wqe_index;
3450 u32 u32temp;
3451 /* u32 counter; */
3452
3453 nes_debug(NES_DBG_CQ, "\n");
3454
3455 spin_lock_irqsave(&nescq->lock, flags);
3456
3457 head = nescq->hw_cq.cq_head;
3458 cq_size = nescq->hw_cq.cq_size;
3459
3460 while (cqe_count < num_entries) {
3461 if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3462 NES_CQE_VALID) {
3463 /*
3464 * Make sure we read CQ entry contents *after*
3465 * we've checked the valid bit.
3466 */
3467 rmb();
3468
3469 cqe = nescq->hw_cq.cq_vbase[head];
3470 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3471 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3472 wqe_index = u32temp &
3473 (nesdev->nesadapter->max_qp_wr - 1);
3474 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3475 /* parse CQE, get completion context from WQE (either rq or sq */
3476 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3477 ((u64)u32temp);
3478 nesqp = *((struct nes_qp **)&u64temp);
3479 memset(entry, 0, sizeof *entry);
3480 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3481 entry->status = IB_WC_SUCCESS;
3482 } else {
3483 entry->status = IB_WC_WR_FLUSH_ERR;
3484 }
3485
3486 entry->qp = &nesqp->ibqp;
3487 entry->src_qp = nesqp->hwqp.qp_id;
3488
3489 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3490 if (nesqp->skip_lsmm) {
3491 nesqp->skip_lsmm = 0;
3492 wq_tail = nesqp->hwqp.sq_tail++;
3493 }
3494
3495 /* Working on a SQ Completion*/
3496 wq_tail = wqe_index;
3497 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3498 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3499 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3500 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3501 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3502 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3503 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3504
3505 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3506 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3507 case NES_IWARP_SQ_OP_RDMAW:
3508 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3509 entry->opcode = IB_WC_RDMA_WRITE;
3510 break;
3511 case NES_IWARP_SQ_OP_RDMAR:
3512 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3513 entry->opcode = IB_WC_RDMA_READ;
3514 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3515 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3516 break;
3517 case NES_IWARP_SQ_OP_SENDINV:
3518 case NES_IWARP_SQ_OP_SENDSEINV:
3519 case NES_IWARP_SQ_OP_SEND:
3520 case NES_IWARP_SQ_OP_SENDSE:
3521 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3522 entry->opcode = IB_WC_SEND;
3523 break;
3524 }
3525 } else {
3526 /* Working on a RQ Completion*/
3527 wq_tail = wqe_index;
3528 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3529 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3530 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3531 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3532 entry->opcode = IB_WC_RECV;
3533 }
3534 entry->wr_id = wrid;
3535
3536 if (++head >= cq_size)
3537 head = 0;
3538 cqe_count++;
3539 nescq->polled_completions++;
3540 if ((nescq->polled_completions > (cq_size / 2)) ||
3541 (nescq->polled_completions == 255)) {
3542 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3543 " are pending %u of %u.\n",
3544 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3545 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3546 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3547 nescq->polled_completions = 0;
3548 }
3549 entry++;
3550 } else
3551 break;
3552 }
3553
3554 if (nescq->polled_completions) {
3555 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3556 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3557 nescq->polled_completions = 0;
3558 }
3559
3560 nescq->hw_cq.cq_head = head;
3561 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3562 cqe_count, nescq->hw_cq.cq_number);
3563
3564 spin_unlock_irqrestore(&nescq->lock, flags);
3565
3566 return cqe_count;
3567 }
3568
3569
3570 /**
3571 * nes_req_notify_cq
3572 */
3573 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3574 {
3575 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3576 struct nes_device *nesdev = nesvnic->nesdev;
3577 struct nes_cq *nescq = to_nescq(ibcq);
3578 u32 cq_arm;
3579
3580 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3581 nescq->hw_cq.cq_number);
3582
3583 cq_arm = nescq->hw_cq.cq_number;
3584 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3585 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3586 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3587 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3588 else
3589 return -EINVAL;
3590
3591 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3592 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3593
3594 return 0;
3595 }
3596
3597
3598 /**
3599 * nes_init_ofa_device
3600 */
3601 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3602 {
3603 struct nes_ib_device *nesibdev;
3604 struct nes_vnic *nesvnic = netdev_priv(netdev);
3605 struct nes_device *nesdev = nesvnic->nesdev;
3606
3607 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3608 if (nesibdev == NULL) {
3609 return NULL;
3610 }
3611 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3612 nesibdev->ibdev.owner = THIS_MODULE;
3613
3614 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3615 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3616 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3617
3618 nesibdev->ibdev.uverbs_cmd_mask =
3619 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3620 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3621 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3622 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3623 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3624 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3625 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3626 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3627 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3628 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3629 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3630 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3631 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3632 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3633 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3634 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3635 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3636 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3637 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3638 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3639 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3640 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3641
3642 nesibdev->ibdev.phys_port_cnt = 1;
3643 nesibdev->ibdev.num_comp_vectors = 1;
3644 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3645 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3646 nesibdev->ibdev.query_device = nes_query_device;
3647 nesibdev->ibdev.query_port = nes_query_port;
3648 nesibdev->ibdev.modify_port = nes_modify_port;
3649 nesibdev->ibdev.query_pkey = nes_query_pkey;
3650 nesibdev->ibdev.query_gid = nes_query_gid;
3651 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3652 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3653 nesibdev->ibdev.mmap = nes_mmap;
3654 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3655 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3656 nesibdev->ibdev.create_ah = nes_create_ah;
3657 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3658 nesibdev->ibdev.create_qp = nes_create_qp;
3659 nesibdev->ibdev.modify_qp = nes_modify_qp;
3660 nesibdev->ibdev.query_qp = nes_query_qp;
3661 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3662 nesibdev->ibdev.create_cq = nes_create_cq;
3663 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3664 nesibdev->ibdev.poll_cq = nes_poll_cq;
3665 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3666 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3667 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3668 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3669 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3670 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3671 nesibdev->ibdev.bind_mw = nes_bind_mw;
3672
3673 nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3674 nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3675 nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3676 nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3677
3678 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3679 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3680 nesibdev->ibdev.process_mad = nes_process_mad;
3681
3682 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3683 nesibdev->ibdev.post_send = nes_post_send;
3684 nesibdev->ibdev.post_recv = nes_post_recv;
3685
3686 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3687 if (nesibdev->ibdev.iwcm == NULL) {
3688 ib_dealloc_device(&nesibdev->ibdev);
3689 return NULL;
3690 }
3691 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3692 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3693 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3694 nesibdev->ibdev.iwcm->connect = nes_connect;
3695 nesibdev->ibdev.iwcm->accept = nes_accept;
3696 nesibdev->ibdev.iwcm->reject = nes_reject;
3697 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3698 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3699
3700 return nesibdev;
3701 }
3702
3703
3704 /**
3705 * nes_destroy_ofa_device
3706 */
3707 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3708 {
3709 if (nesibdev == NULL)
3710 return;
3711
3712 nes_unregister_ofa_device(nesibdev);
3713
3714 kfree(nesibdev->ibdev.iwcm);
3715 ib_dealloc_device(&nesibdev->ibdev);
3716 }
3717
3718
3719 /**
3720 * nes_register_ofa_device
3721 */
3722 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3723 {
3724 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3725 struct nes_device *nesdev = nesvnic->nesdev;
3726 struct nes_adapter *nesadapter = nesdev->nesadapter;
3727 int i, ret;
3728
3729 ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3730 if (ret) {
3731 return ret;
3732 }
3733
3734 /* Get the resources allocated to this device */
3735 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3736 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3737 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3738 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3739
3740 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3741 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3742 if (ret) {
3743 while (i > 0) {
3744 i--;
3745 device_remove_file(&nesibdev->ibdev.dev,
3746 nes_dev_attributes[i]);
3747 }
3748 ib_unregister_device(&nesibdev->ibdev);
3749 return ret;
3750 }
3751 }
3752
3753 nesvnic->of_device_registered = 1;
3754
3755 return 0;
3756 }
3757
3758
3759 /**
3760 * nes_unregister_ofa_device
3761 */
3762 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3763 {
3764 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3765 int i;
3766
3767 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3768 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3769 }
3770
3771 if (nesvnic->of_device_registered) {
3772 ib_unregister_device(&nesibdev->ibdev);
3773 }
3774
3775 nesvnic->of_device_registered = 0;
3776 }
(Inofficial) Linux kernel tree running on the Nao robot