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x86, UV: Fix for nodes with memory and no cpus
[linux/fpc-iii.git] / drivers / infiniband / hw / nes / nes_verbs.c
blob7e5b5ba13a74f83b227959475a751273ab6b3bce
1 /*
2 * Copyright (c) 2006 - 2009 Intel-NE, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 */
33
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/random.h>
37 #include <linux/highmem.h>
38 #include <asm/byteorder.h>
39
40 #include <rdma/ib_verbs.h>
41 #include <rdma/iw_cm.h>
42 #include <rdma/ib_user_verbs.h>
43
44 #include "nes.h"
45
46 #include <rdma/ib_umem.h>
47
48 atomic_t mod_qp_timouts;
49 atomic_t qps_created;
50 atomic_t sw_qps_destroyed;
51
52 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
53
54 /**
55 * nes_alloc_mw
56 */
57 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
58 struct nes_pd *nespd = to_nespd(ibpd);
59 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
60 struct nes_device *nesdev = nesvnic->nesdev;
61 struct nes_adapter *nesadapter = nesdev->nesadapter;
62 struct nes_cqp_request *cqp_request;
63 struct nes_mr *nesmr;
64 struct ib_mw *ibmw;
65 struct nes_hw_cqp_wqe *cqp_wqe;
66 int ret;
67 u32 stag;
68 u32 stag_index = 0;
69 u32 next_stag_index = 0;
70 u32 driver_key = 0;
71 u8 stag_key = 0;
72
73 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
74 stag_key = (u8)next_stag_index;
75
76 driver_key = 0;
77
78 next_stag_index >>= 8;
79 next_stag_index %= nesadapter->max_mr;
80
81 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
82 nesadapter->max_mr, &stag_index, &next_stag_index);
83 if (ret) {
84 return ERR_PTR(ret);
85 }
86
87 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
88 if (!nesmr) {
89 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
90 return ERR_PTR(-ENOMEM);
91 }
92
93 stag = stag_index << 8;
94 stag |= driver_key;
95 stag += (u32)stag_key;
96
97 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
98 stag, stag_index);
99
100 /* Register the region with the adapter */
101 cqp_request = nes_get_cqp_request(nesdev);
102 if (cqp_request == NULL) {
103 kfree(nesmr);
104 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
105 return ERR_PTR(-ENOMEM);
106 }
107
108 cqp_request->waiting = 1;
109 cqp_wqe = &cqp_request->cqp_wqe;
110
111 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
112 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
113 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
114 NES_CQP_STAG_REM_ACC_EN);
115
116 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
117 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
119
120 atomic_set(&cqp_request->refcount, 2);
121 nes_post_cqp_request(nesdev, cqp_request);
122
123 /* Wait for CQP */
124 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
125 NES_EVENT_TIMEOUT);
126 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
127 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
128 stag, ret, cqp_request->major_code, cqp_request->minor_code);
129 if ((!ret) || (cqp_request->major_code)) {
130 nes_put_cqp_request(nesdev, cqp_request);
131 kfree(nesmr);
132 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
133 if (!ret) {
134 return ERR_PTR(-ETIME);
135 } else {
136 return ERR_PTR(-ENOMEM);
137 }
138 }
139 nes_put_cqp_request(nesdev, cqp_request);
140
141 nesmr->ibmw.rkey = stag;
142 nesmr->mode = IWNES_MEMREG_TYPE_MW;
143 ibmw = &nesmr->ibmw;
144 nesmr->pbl_4k = 0;
145 nesmr->pbls_used = 0;
146
147 return ibmw;
148 }
149
150
151 /**
152 * nes_dealloc_mw
153 */
154 static int nes_dealloc_mw(struct ib_mw *ibmw)
155 {
156 struct nes_mr *nesmr = to_nesmw(ibmw);
157 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
158 struct nes_device *nesdev = nesvnic->nesdev;
159 struct nes_adapter *nesadapter = nesdev->nesadapter;
160 struct nes_hw_cqp_wqe *cqp_wqe;
161 struct nes_cqp_request *cqp_request;
162 int err = 0;
163 int ret;
164
165 /* Deallocate the window with the adapter */
166 cqp_request = nes_get_cqp_request(nesdev);
167 if (cqp_request == NULL) {
168 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
169 return -ENOMEM;
170 }
171 cqp_request->waiting = 1;
172 cqp_wqe = &cqp_request->cqp_wqe;
173 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
174 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
176
177 atomic_set(&cqp_request->refcount, 2);
178 nes_post_cqp_request(nesdev, cqp_request);
179
180 /* Wait for CQP */
181 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
182 ibmw->rkey);
183 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
184 NES_EVENT_TIMEOUT);
185 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
186 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
187 ret, cqp_request->major_code, cqp_request->minor_code);
188 if (!ret)
189 err = -ETIME;
190 else if (cqp_request->major_code)
191 err = -EIO;
192
193 nes_put_cqp_request(nesdev, cqp_request);
194
195 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
196 (ibmw->rkey & 0x0fffff00) >> 8);
197 kfree(nesmr);
198
199 return err;
200 }
201
202
203 /**
204 * nes_bind_mw
205 */
206 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
207 struct ib_mw_bind *ibmw_bind)
208 {
209 u64 u64temp;
210 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
211 struct nes_device *nesdev = nesvnic->nesdev;
212 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
213 struct nes_qp *nesqp = to_nesqp(ibqp);
214 struct nes_hw_qp_wqe *wqe;
215 unsigned long flags = 0;
216 u32 head;
217 u32 wqe_misc = 0;
218 u32 qsize;
219
220 if (nesqp->ibqp_state > IB_QPS_RTS)
221 return -EINVAL;
222
223 spin_lock_irqsave(&nesqp->lock, flags);
224
225 head = nesqp->hwqp.sq_head;
226 qsize = nesqp->hwqp.sq_tail;
227
228 /* Check for SQ overflow */
229 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
230 spin_unlock_irqrestore(&nesqp->lock, flags);
231 return -EINVAL;
232 }
233
234 wqe = &nesqp->hwqp.sq_vbase[head];
235 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
236 nes_fill_init_qp_wqe(wqe, nesqp, head);
237 u64temp = ibmw_bind->wr_id;
238 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
239 wqe_misc = NES_IWARP_SQ_OP_BIND;
240
241 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
242
243 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
244 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
245
246 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
247 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
248 }
249 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
250 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
251 }
252
253 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
257 ibmw_bind->length);
258 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
259 u64temp = (u64)ibmw_bind->addr;
260 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
261
262 head++;
263 if (head >= qsize)
264 head = 0;
265
266 nesqp->hwqp.sq_head = head;
267 barrier();
268
269 nes_write32(nesdev->regs+NES_WQE_ALLOC,
270 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
271
272 spin_unlock_irqrestore(&nesqp->lock, flags);
273
274 return 0;
275 }
276
277
278 /**
279 * nes_alloc_fmr
280 */
281 static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
282 int ibmr_access_flags,
283 struct ib_fmr_attr *ibfmr_attr)
284 {
285 unsigned long flags;
286 struct nes_pd *nespd = to_nespd(ibpd);
287 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
288 struct nes_device *nesdev = nesvnic->nesdev;
289 struct nes_adapter *nesadapter = nesdev->nesadapter;
290 struct nes_fmr *nesfmr;
291 struct nes_cqp_request *cqp_request;
292 struct nes_hw_cqp_wqe *cqp_wqe;
293 int ret;
294 u32 stag;
295 u32 stag_index = 0;
296 u32 next_stag_index = 0;
297 u32 driver_key = 0;
298 u32 opcode = 0;
299 u8 stag_key = 0;
300 int i=0;
301 struct nes_vpbl vpbl;
302
303 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
304 stag_key = (u8)next_stag_index;
305
306 driver_key = 0;
307
308 next_stag_index >>= 8;
309 next_stag_index %= nesadapter->max_mr;
310
311 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
312 nesadapter->max_mr, &stag_index, &next_stag_index);
313 if (ret) {
314 goto failed_resource_alloc;
315 }
316
317 nesfmr = kzalloc(sizeof(*nesfmr), GFP_KERNEL);
318 if (!nesfmr) {
319 ret = -ENOMEM;
320 goto failed_fmr_alloc;
321 }
322
323 nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR;
324 if (ibfmr_attr->max_pages == 1) {
325 /* use zero length PBL */
326 nesfmr->nesmr.pbl_4k = 0;
327 nesfmr->nesmr.pbls_used = 0;
328 } else if (ibfmr_attr->max_pages <= 32) {
329 /* use PBL 256 */
330 nesfmr->nesmr.pbl_4k = 0;
331 nesfmr->nesmr.pbls_used = 1;
332 } else if (ibfmr_attr->max_pages <= 512) {
333 /* use 4K PBLs */
334 nesfmr->nesmr.pbl_4k = 1;
335 nesfmr->nesmr.pbls_used = 1;
336 } else {
337 /* use two level 4K PBLs */
338 /* add support for two level 256B PBLs */
339 nesfmr->nesmr.pbl_4k = 1;
340 nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages >> 9) +
341 ((ibfmr_attr->max_pages & 511) ? 1 : 0);
342 }
343 /* Register the region with the adapter */
344 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
345
346 /* track PBL resources */
347 if (nesfmr->nesmr.pbls_used != 0) {
348 if (nesfmr->nesmr.pbl_4k) {
349 if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
350 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
351 ret = -ENOMEM;
352 goto failed_vpbl_avail;
353 } else {
354 nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
355 }
356 } else {
357 if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
358 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
359 ret = -ENOMEM;
360 goto failed_vpbl_avail;
361 } else {
362 nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
363 }
364 }
365 }
366
367 /* one level pbl */
368 if (nesfmr->nesmr.pbls_used == 0) {
369 nesfmr->root_vpbl.pbl_vbase = NULL;
370 nes_debug(NES_DBG_MR, "zero level pbl \n");
371 } else if (nesfmr->nesmr.pbls_used == 1) {
372 /* can change it to kmalloc & dma_map_single */
373 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
374 &nesfmr->root_vpbl.pbl_pbase);
375 if (!nesfmr->root_vpbl.pbl_vbase) {
376 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
377 ret = -ENOMEM;
378 goto failed_vpbl_alloc;
379 }
380 nesfmr->leaf_pbl_cnt = 0;
381 nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n",
382 nesfmr->root_vpbl.pbl_vbase);
383 }
384 /* two level pbl */
385 else {
386 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
387 &nesfmr->root_vpbl.pbl_pbase);
388 if (!nesfmr->root_vpbl.pbl_vbase) {
389 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
390 ret = -ENOMEM;
391 goto failed_vpbl_alloc;
392 }
393
394 nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
395 nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_ATOMIC);
396 if (!nesfmr->root_vpbl.leaf_vpbl) {
397 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
398 ret = -ENOMEM;
399 goto failed_leaf_vpbl_alloc;
400 }
401
402 nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
403 " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
404 nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
405
406 for (i=0; i<nesfmr->leaf_pbl_cnt; i++)
407 nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL;
408
409 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
410 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
411 &vpbl.pbl_pbase);
412
413 if (!vpbl.pbl_vbase) {
414 ret = -ENOMEM;
415 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
416 goto failed_leaf_vpbl_pages_alloc;
417 }
418
419 nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
420 nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
421 nesfmr->root_vpbl.leaf_vpbl[i] = vpbl;
422
423 nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n",
424 nesfmr->root_vpbl.pbl_vbase[i].pa_low,
425 nesfmr->root_vpbl.pbl_vbase[i].pa_high,
426 &nesfmr->root_vpbl.leaf_vpbl[i]);
427 }
428 }
429 nesfmr->ib_qp = NULL;
430 nesfmr->access_rights =0;
431
432 stag = stag_index << 8;
433 stag |= driver_key;
434 stag += (u32)stag_key;
435
436 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
437 cqp_request = nes_get_cqp_request(nesdev);
438 if (cqp_request == NULL) {
439 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
440 ret = -ENOMEM;
441 goto failed_leaf_vpbl_pages_alloc;
442 }
443 cqp_request->waiting = 1;
444 cqp_wqe = &cqp_request->cqp_wqe;
445
446 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
447 stag, stag_index);
448
449 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
450
451 if (nesfmr->nesmr.pbl_4k == 1)
452 opcode |= NES_CQP_STAG_PBL_BLK_SIZE;
453
454 if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) {
455 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE |
456 NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN;
457 nesfmr->access_rights |=
458 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE |
459 NES_CQP_STAG_REM_ACC_EN;
460 }
461
462 if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) {
463 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ |
464 NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN;
465 nesfmr->access_rights |=
466 NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ |
467 NES_CQP_STAG_REM_ACC_EN;
468 }
469
470 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
471 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
472 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
473 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
474
475 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] =
476 cpu_to_le32((nesfmr->nesmr.pbls_used>1) ?
477 (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used);
478
479 atomic_set(&cqp_request->refcount, 2);
480 nes_post_cqp_request(nesdev, cqp_request);
481
482 /* Wait for CQP */
483 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
484 NES_EVENT_TIMEOUT);
485 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
486 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
487 stag, ret, cqp_request->major_code, cqp_request->minor_code);
488
489 if ((!ret) || (cqp_request->major_code)) {
490 nes_put_cqp_request(nesdev, cqp_request);
491 ret = (!ret) ? -ETIME : -EIO;
492 goto failed_leaf_vpbl_pages_alloc;
493 }
494 nes_put_cqp_request(nesdev, cqp_request);
495 nesfmr->nesmr.ibfmr.lkey = stag;
496 nesfmr->nesmr.ibfmr.rkey = stag;
497 nesfmr->attr = *ibfmr_attr;
498
499 return &nesfmr->nesmr.ibfmr;
500
501 failed_leaf_vpbl_pages_alloc:
502 /* unroll all allocated pages */
503 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
504 if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) {
505 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
506 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
507 }
508 }
509 if (nesfmr->root_vpbl.leaf_vpbl)
510 kfree(nesfmr->root_vpbl.leaf_vpbl);
511
512 failed_leaf_vpbl_alloc:
513 if (nesfmr->leaf_pbl_cnt == 0) {
514 if (nesfmr->root_vpbl.pbl_vbase)
515 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
516 nesfmr->root_vpbl.pbl_pbase);
517 } else
518 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
519 nesfmr->root_vpbl.pbl_pbase);
520
521 failed_vpbl_alloc:
522 if (nesfmr->nesmr.pbls_used != 0) {
523 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
524 if (nesfmr->nesmr.pbl_4k)
525 nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
526 else
527 nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
528 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
529 }
530
531 failed_vpbl_avail:
532 kfree(nesfmr);
533
534 failed_fmr_alloc:
535 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
536
537 failed_resource_alloc:
538 return ERR_PTR(ret);
539 }
540
541
542 /**
543 * nes_dealloc_fmr
544 */
545 static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
546 {
547 unsigned long flags;
548 struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
549 struct nes_fmr *nesfmr = to_nesfmr(nesmr);
550 struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
551 struct nes_device *nesdev = nesvnic->nesdev;
552 struct nes_adapter *nesadapter = nesdev->nesadapter;
553 int i = 0;
554 int rc;
555
556 /* free the resources */
557 if (nesfmr->leaf_pbl_cnt == 0) {
558 /* single PBL case */
559 if (nesfmr->root_vpbl.pbl_vbase)
560 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
561 nesfmr->root_vpbl.pbl_pbase);
562 } else {
563 for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
564 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
565 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
566 }
567 kfree(nesfmr->root_vpbl.leaf_vpbl);
568 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
569 nesfmr->root_vpbl.pbl_pbase);
570 }
571 nesmr->ibmw.device = ibfmr->device;
572 nesmr->ibmw.pd = ibfmr->pd;
573 nesmr->ibmw.rkey = ibfmr->rkey;
574 nesmr->ibmw.uobject = NULL;
575
576 rc = nes_dealloc_mw(&nesmr->ibmw);
577
578 if ((rc == 0) && (nesfmr->nesmr.pbls_used != 0)) {
579 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
580 if (nesfmr->nesmr.pbl_4k) {
581 nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
582 WARN_ON(nesadapter->free_4kpbl > nesadapter->max_4kpbl);
583 } else {
584 nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
585 WARN_ON(nesadapter->free_256pbl > nesadapter->max_256pbl);
586 }
587 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
588 }
589
590 return rc;
591 }
592
593
594 /**
595 * nes_map_phys_fmr
596 */
597 static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
598 int list_len, u64 iova)
599 {
600 return 0;
601 }
602
603
604 /**
605 * nes_unmap_frm
606 */
607 static int nes_unmap_fmr(struct list_head *ibfmr_list)
608 {
609 return 0;
610 }
611
612
613
614 /**
615 * nes_query_device
616 */
617 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
618 {
619 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
620 struct nes_device *nesdev = nesvnic->nesdev;
621 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
622
623 memset(props, 0, sizeof(*props));
624 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
625
626 props->fw_ver = nesdev->nesadapter->fw_ver;
627 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
628 props->vendor_id = nesdev->nesadapter->vendor_id;
629 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
630 props->hw_ver = nesdev->nesadapter->hw_rev;
631 props->max_mr_size = 0x80000000;
632 props->max_qp = nesibdev->max_qp;
633 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
634 props->max_sge = nesdev->nesadapter->max_sge;
635 props->max_cq = nesibdev->max_cq;
636 props->max_cqe = nesdev->nesadapter->max_cqe - 1;
637 props->max_mr = nesibdev->max_mr;
638 props->max_mw = nesibdev->max_mr;
639 props->max_pd = nesibdev->max_pd;
640 props->max_sge_rd = 1;
641 switch (nesdev->nesadapter->max_irrq_wr) {
642 case 0:
643 props->max_qp_rd_atom = 1;
644 break;
645 case 1:
646 props->max_qp_rd_atom = 4;
647 break;
648 case 2:
649 props->max_qp_rd_atom = 16;
650 break;
651 case 3:
652 props->max_qp_rd_atom = 32;
653 break;
654 default:
655 props->max_qp_rd_atom = 0;
656 }
657 props->max_qp_init_rd_atom = props->max_qp_wr;
658 props->atomic_cap = IB_ATOMIC_NONE;
659 props->max_map_per_fmr = 1;
660
661 return 0;
662 }
663
664
665 /**
666 * nes_query_port
667 */
668 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
669 {
670 memset(props, 0, sizeof(*props));
671
672 props->max_mtu = IB_MTU_2048;
673 props->active_mtu = IB_MTU_2048;
674 props->lid = 1;
675 props->lmc = 0;
676 props->sm_lid = 0;
677 props->sm_sl = 0;
678 props->state = IB_PORT_ACTIVE;
679 props->phys_state = 0;
680 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
681 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
682 props->gid_tbl_len = 1;
683 props->pkey_tbl_len = 1;
684 props->qkey_viol_cntr = 0;
685 props->active_width = IB_WIDTH_4X;
686 props->active_speed = 1;
687 props->max_msg_sz = 0x80000000;
688
689 return 0;
690 }
691
692
693 /**
694 * nes_modify_port
695 */
696 static int nes_modify_port(struct ib_device *ibdev, u8 port,
697 int port_modify_mask, struct ib_port_modify *props)
698 {
699 return 0;
700 }
701
702
703 /**
704 * nes_query_pkey
705 */
706 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
707 {
708 *pkey = 0;
709 return 0;
710 }
711
712
713 /**
714 * nes_query_gid
715 */
716 static int nes_query_gid(struct ib_device *ibdev, u8 port,
717 int index, union ib_gid *gid)
718 {
719 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
720
721 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
722 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
723
724 return 0;
725 }
726
727
728 /**
729 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
730 * of all objects associated with a particular user-mode client.
731 */
732 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
733 struct ib_udata *udata)
734 {
735 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
736 struct nes_device *nesdev = nesvnic->nesdev;
737 struct nes_adapter *nesadapter = nesdev->nesadapter;
738 struct nes_alloc_ucontext_req req;
739 struct nes_alloc_ucontext_resp uresp;
740 struct nes_ucontext *nes_ucontext;
741 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
742
743
744 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
745 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
746 return ERR_PTR(-EINVAL);
747 }
748
749 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
750 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
751 req.userspace_ver, NES_ABI_USERSPACE_VER);
752 return ERR_PTR(-EINVAL);
753 }
754
755
756 memset(&uresp, 0, sizeof uresp);
757
758 uresp.max_qps = nesibdev->max_qp;
759 uresp.max_pds = nesibdev->max_pd;
760 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
761 uresp.virtwq = nesadapter->virtwq;
762 uresp.kernel_ver = NES_ABI_KERNEL_VER;
763
764 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
765 if (!nes_ucontext)
766 return ERR_PTR(-ENOMEM);
767
768 nes_ucontext->nesdev = nesdev;
769 nes_ucontext->mmap_wq_offset = uresp.max_pds;
770 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
771 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
772 PAGE_SIZE;
773
774
775 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
776 kfree(nes_ucontext);
777 return ERR_PTR(-EFAULT);
778 }
779
780 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
781 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
782 atomic_set(&nes_ucontext->usecnt, 1);
783 return &nes_ucontext->ibucontext;
784 }
785
786
787 /**
788 * nes_dealloc_ucontext
789 */
790 static int nes_dealloc_ucontext(struct ib_ucontext *context)
791 {
792 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
793 /* struct nes_device *nesdev = nesvnic->nesdev; */
794 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
795
796 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
797 return 0;
798 kfree(nes_ucontext);
799 return 0;
800 }
801
802
803 /**
804 * nes_mmap
805 */
806 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
807 {
808 unsigned long index;
809 struct nes_vnic *nesvnic = to_nesvnic(context->device);
810 struct nes_device *nesdev = nesvnic->nesdev;
811 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
812 struct nes_ucontext *nes_ucontext;
813 struct nes_qp *nesqp;
814
815 nes_ucontext = to_nesucontext(context);
816
817
818 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
819 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
820 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
821 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
822 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
823 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
824 return -EFAULT;
825 }
826 nesqp = nes_ucontext->mmap_nesqp[index];
827 if (nesqp == NULL) {
828 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
829 return -EFAULT;
830 }
831 if (remap_pfn_range(vma, vma->vm_start,
832 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
833 vma->vm_end - vma->vm_start,
834 vma->vm_page_prot)) {
835 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
836 return -EAGAIN;
837 }
838 vma->vm_private_data = nesqp;
839 return 0;
840 } else {
841 index = vma->vm_pgoff;
842 if (!test_bit(index, nes_ucontext->allocated_doorbells))
843 return -EFAULT;
844
845 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
846 if (io_remap_pfn_range(vma, vma->vm_start,
847 (nesdev->doorbell_start +
848 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
849 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
850 return -EAGAIN;
851 vma->vm_private_data = nes_ucontext;
852 return 0;
853 }
854
855 return -ENOSYS;
856 }
857
858
859 /**
860 * nes_alloc_pd
861 */
862 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
863 struct ib_ucontext *context, struct ib_udata *udata)
864 {
865 struct nes_pd *nespd;
866 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
867 struct nes_device *nesdev = nesvnic->nesdev;
868 struct nes_adapter *nesadapter = nesdev->nesadapter;
869 struct nes_ucontext *nesucontext;
870 struct nes_alloc_pd_resp uresp;
871 u32 pd_num = 0;
872 int err;
873
874 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
875 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
876 atomic_read(&nesvnic->netdev->refcnt));
877
878 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
879 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
880 if (err) {
881 return ERR_PTR(err);
882 }
883
884 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
885 if (!nespd) {
886 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
887 return ERR_PTR(-ENOMEM);
888 }
889
890 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
891 nespd, nesvnic->nesibdev->ibdev.name);
892
893 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
894
895 if (context) {
896 nesucontext = to_nesucontext(context);
897 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
898 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
899 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
900 nespd->mmap_db_index, nespd->pd_id);
901 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
902 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
903 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
904 kfree(nespd);
905 return ERR_PTR(-ENOMEM);
906 }
907
908 uresp.pd_id = nespd->pd_id;
909 uresp.mmap_db_index = nespd->mmap_db_index;
910 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
911 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
912 kfree(nespd);
913 return ERR_PTR(-EFAULT);
914 }
915
916 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
917 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
918 nesucontext->first_free_db = nespd->mmap_db_index + 1;
919 }
920
921 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
922 return &nespd->ibpd;
923 }
924
925
926 /**
927 * nes_dealloc_pd
928 */
929 static int nes_dealloc_pd(struct ib_pd *ibpd)
930 {
931 struct nes_ucontext *nesucontext;
932 struct nes_pd *nespd = to_nespd(ibpd);
933 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
934 struct nes_device *nesdev = nesvnic->nesdev;
935 struct nes_adapter *nesadapter = nesdev->nesadapter;
936
937 if ((ibpd->uobject) && (ibpd->uobject->context)) {
938 nesucontext = to_nesucontext(ibpd->uobject->context);
939 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
940 nespd->mmap_db_index);
941 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
942 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
943 if (nesucontext->first_free_db > nespd->mmap_db_index) {
944 nesucontext->first_free_db = nespd->mmap_db_index;
945 }
946 }
947
948 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
949 nespd->pd_id, nespd);
950 nes_free_resource(nesadapter, nesadapter->allocated_pds,
951 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
952 kfree(nespd);
953
954 return 0;
955 }
956
957
958 /**
959 * nes_create_ah
960 */
961 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
962 {
963 return ERR_PTR(-ENOSYS);
964 }
965
966
967 /**
968 * nes_destroy_ah
969 */
970 static int nes_destroy_ah(struct ib_ah *ah)
971 {
972 return -ENOSYS;
973 }
974
975
976 /**
977 * nes_get_encoded_size
978 */
979 static inline u8 nes_get_encoded_size(int *size)
980 {
981 u8 encoded_size = 0;
982 if (*size <= 32) {
983 *size = 32;
984 encoded_size = 1;
985 } else if (*size <= 128) {
986 *size = 128;
987 encoded_size = 2;
988 } else if (*size <= 512) {
989 *size = 512;
990 encoded_size = 3;
991 }
992 return (encoded_size);
993 }
994
995
996
997 /**
998 * nes_setup_virt_qp
999 */
1000 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
1001 struct nes_vnic *nesvnic, int sq_size, int rq_size)
1002 {
1003 unsigned long flags;
1004 void *mem;
1005 __le64 *pbl = NULL;
1006 __le64 *tpbl;
1007 __le64 *pblbuffer;
1008 struct nes_device *nesdev = nesvnic->nesdev;
1009 struct nes_adapter *nesadapter = nesdev->nesadapter;
1010 u32 pbl_entries;
1011 u8 rq_pbl_entries;
1012 u8 sq_pbl_entries;
1013
1014 pbl_entries = nespbl->pbl_size >> 3;
1015 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
1016 nespbl->pbl_size, pbl_entries,
1017 (void *)nespbl->pbl_vbase,
1018 (unsigned long) nespbl->pbl_pbase);
1019 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
1020 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
1021 /* the first pbl to be fro the rq_vbase... */
1022 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1023 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1024 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1025 if (!nespbl->page) {
1026 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1027 kfree(nespbl);
1028 return -ENOMEM;
1029 }
1030
1031 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1032 nesqp->page = nespbl->page;
1033 if (!nesqp->hwqp.sq_vbase) {
1034 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1035 kfree(nespbl);
1036 return -ENOMEM;
1037 }
1038
1039 /* Now to get to sq.. we need to calculate how many */
1040 /* PBL entries were used by the rq.. */
1041 pbl += sq_pbl_entries;
1042 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1043 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1044 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1045
1046 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1047 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1048 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
1049 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1050 if (!nesadapter->free_256pbl) {
1051 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1052 nespbl->pbl_pbase);
1053 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1054 kunmap(nesqp->page);
1055 kfree(nespbl);
1056 return -ENOMEM;
1057 }
1058 nesadapter->free_256pbl--;
1059 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1060
1061 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1062 pblbuffer = nesqp->pbl_vbase;
1063 if (!nesqp->pbl_vbase) {
1064 /* memory allocated during nes_reg_user_mr() */
1065 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1066 nespbl->pbl_pbase);
1067 kfree(nespbl);
1068 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1069 nesadapter->free_256pbl++;
1070 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1071 kunmap(nesqp->page);
1072 return -ENOMEM;
1073 }
1074 memset(nesqp->pbl_vbase, 0, 256);
1075 /* fill in the page address in the pbl buffer.. */
1076 tpbl = pblbuffer + 16;
1077 pbl = (__le64 *)nespbl->pbl_vbase;
1078 while (sq_pbl_entries--)
1079 *tpbl++ = *pbl++;
1080 tpbl = pblbuffer;
1081 while (rq_pbl_entries--)
1082 *tpbl++ = *pbl++;
1083
1084 /* done with memory allocated during nes_reg_user_mr() */
1085 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1086 nespbl->pbl_pbase);
1087 kfree(nespbl);
1088
1089 nesqp->qp_mem_size =
1090 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1091 /* Round up to a multiple of a page */
1092 nesqp->qp_mem_size += PAGE_SIZE - 1;
1093 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1094
1095 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1096 &nesqp->hwqp.q2_pbase);
1097
1098 if (!mem) {
1099 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1100 nesqp->pbl_vbase = NULL;
1101 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1102 nesadapter->free_256pbl++;
1103 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1104 kunmap(nesqp->page);
1105 return -ENOMEM;
1106 }
1107 nesqp->hwqp.q2_vbase = mem;
1108 mem += 256;
1109 memset(nesqp->hwqp.q2_vbase, 0, 256);
1110 nesqp->nesqp_context = mem;
1111 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1112 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1113
1114 return 0;
1115 }
1116
1117
1118 /**
1119 * nes_setup_mmap_qp
1120 */
1121 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1122 int sq_size, int rq_size)
1123 {
1124 void *mem;
1125 struct nes_device *nesdev = nesvnic->nesdev;
1126
1127 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1128 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1129 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1130 256; /* this is Q2 */
1131 /* Round up to a multiple of a page */
1132 nesqp->qp_mem_size += PAGE_SIZE - 1;
1133 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1134
1135 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1136 &nesqp->hwqp.sq_pbase);
1137 if (!mem)
1138 return -ENOMEM;
1139 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1140 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1141 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1142
1143 memset(mem, 0, nesqp->qp_mem_size);
1144
1145 nesqp->hwqp.sq_vbase = mem;
1146 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1147
1148 nesqp->hwqp.rq_vbase = mem;
1149 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1150 sizeof(struct nes_hw_qp_wqe) * sq_size;
1151 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1152
1153 nesqp->hwqp.q2_vbase = mem;
1154 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1155 sizeof(struct nes_hw_qp_wqe) * rq_size;
1156 mem += 256;
1157 memset(nesqp->hwqp.q2_vbase, 0, 256);
1158
1159 nesqp->nesqp_context = mem;
1160 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1161 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1162 return 0;
1163 }
1164
1165
1166 /**
1167 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1168 */
1169 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1170 struct nes_qp *nesqp, int virt_wqs)
1171 {
1172 unsigned long flags;
1173 struct nes_adapter *nesadapter = nesdev->nesadapter;
1174 if (!virt_wqs) {
1175 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1176 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1177 }else {
1178 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1179 nesadapter->free_256pbl++;
1180 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1181 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1182 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1183 nesqp->pbl_vbase = NULL;
1184 kunmap(nesqp->page);
1185 }
1186 }
1187
1188
1189 /**
1190 * nes_create_qp
1191 */
1192 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1193 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1194 {
1195 u64 u64temp= 0;
1196 u64 u64nesqp = 0;
1197 struct nes_pd *nespd = to_nespd(ibpd);
1198 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1199 struct nes_device *nesdev = nesvnic->nesdev;
1200 struct nes_adapter *nesadapter = nesdev->nesadapter;
1201 struct nes_qp *nesqp;
1202 struct nes_cq *nescq;
1203 struct nes_ucontext *nes_ucontext;
1204 struct nes_hw_cqp_wqe *cqp_wqe;
1205 struct nes_cqp_request *cqp_request;
1206 struct nes_create_qp_req req;
1207 struct nes_create_qp_resp uresp;
1208 struct nes_pbl *nespbl = NULL;
1209 u32 qp_num = 0;
1210 u32 opcode = 0;
1211 /* u32 counter = 0; */
1212 void *mem;
1213 unsigned long flags;
1214 int ret;
1215 int err;
1216 int virt_wqs = 0;
1217 int sq_size;
1218 int rq_size;
1219 u8 sq_encoded_size;
1220 u8 rq_encoded_size;
1221 /* int counter; */
1222
1223 if (init_attr->create_flags)
1224 return ERR_PTR(-EINVAL);
1225
1226 atomic_inc(&qps_created);
1227 switch (init_attr->qp_type) {
1228 case IB_QPT_RC:
1229 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1230 init_attr->cap.max_inline_data = 0;
1231 } else {
1232 init_attr->cap.max_inline_data = 64;
1233 }
1234 sq_size = init_attr->cap.max_send_wr;
1235 rq_size = init_attr->cap.max_recv_wr;
1236
1237 /* check if the encoded sizes are OK or not... */
1238 sq_encoded_size = nes_get_encoded_size(&sq_size);
1239 rq_encoded_size = nes_get_encoded_size(&rq_size);
1240
1241 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1242 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1243 rq_size, sq_size);
1244 return ERR_PTR(-EINVAL);
1245 }
1246
1247 init_attr->cap.max_send_wr = sq_size -2;
1248 init_attr->cap.max_recv_wr = rq_size -1;
1249 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1250
1251 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1252 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1253 if (ret) {
1254 return ERR_PTR(ret);
1255 }
1256
1257 /* Need 512 (actually now 1024) byte alignment on this structure */
1258 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1259 if (!mem) {
1260 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1261 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1262 return ERR_PTR(-ENOMEM);
1263 }
1264 u64nesqp = (unsigned long)mem;
1265 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1266 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1267 u64nesqp &= ~u64temp;
1268 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1269 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1270 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1271 nesqp->allocated_buffer = mem;
1272
1273 if (udata) {
1274 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1275 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1276 kfree(nesqp->allocated_buffer);
1277 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1278 return NULL;
1279 }
1280 if (req.user_wqe_buffers) {
1281 virt_wqs = 1;
1282 }
1283 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1284 nesqp->user_mode = 1;
1285 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1286 if (virt_wqs) {
1287 err = 1;
1288 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1289 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1290 list_del(&nespbl->list);
1291 err = 0;
1292 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1293 nespbl, nespbl->user_base);
1294 break;
1295 }
1296 }
1297 if (err) {
1298 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1299 (long long unsigned int)req.user_wqe_buffers);
1300 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1301 kfree(nesqp->allocated_buffer);
1302 return ERR_PTR(-EFAULT);
1303 }
1304 }
1305
1306 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1307 nesqp->mmap_sq_db_index =
1308 find_next_zero_bit(nes_ucontext->allocated_wqs,
1309 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1310 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1311 nespd->mmap_db_index); */
1312 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1313 nes_debug(NES_DBG_QP,
1314 "db index > max user regions, failing create QP\n");
1315 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1316 if (virt_wqs) {
1317 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1318 nespbl->pbl_pbase);
1319 kfree(nespbl);
1320 }
1321 kfree(nesqp->allocated_buffer);
1322 return ERR_PTR(-ENOMEM);
1323 }
1324 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1325 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1326 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1327 } else {
1328 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1329 kfree(nesqp->allocated_buffer);
1330 return ERR_PTR(-EFAULT);
1331 }
1332 }
1333 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1334 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1335 if (err) {
1336 nes_debug(NES_DBG_QP,
1337 "error geting qp mem code = %d\n", err);
1338 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1339 kfree(nesqp->allocated_buffer);
1340 return ERR_PTR(-ENOMEM);
1341 }
1342
1343 nesqp->hwqp.sq_size = sq_size;
1344 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1345 nesqp->hwqp.sq_head = 1;
1346 nesqp->hwqp.rq_size = rq_size;
1347 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1348 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1349 (void *)nesqp->nesqp_context_pbase);
1350 */
1351 nesqp->hwqp.qp_id = qp_num;
1352 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1353 nesqp->nespd = nespd;
1354
1355 nescq = to_nescq(init_attr->send_cq);
1356 nesqp->nesscq = nescq;
1357 nescq = to_nescq(init_attr->recv_cq);
1358 nesqp->nesrcq = nescq;
1359
1360 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1361 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1362 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1363 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1364 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1365 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1366 if (!udata) {
1367 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1368 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1369 }
1370 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1371 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1372 u64temp = (u64)nesqp->hwqp.sq_pbase;
1373 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1374 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1375
1376
1377 if (!virt_wqs) {
1378 u64temp = (u64)nesqp->hwqp.sq_pbase;
1379 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1380 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1381 u64temp = (u64)nesqp->hwqp.rq_pbase;
1382 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1383 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1384 } else {
1385 u64temp = (u64)nesqp->pbl_pbase;
1386 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1387 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1388 }
1389
1390 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1391 nesvnic->next_qp_nic_index,
1392 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1393 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1394 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1395 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1396 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1397 nesvnic->next_qp_nic_index++;
1398 if ((nesvnic->next_qp_nic_index > 3) ||
1399 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1400 nesvnic->next_qp_nic_index = 0;
1401 }
1402 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1403
1404 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1405 u64temp = (u64)nesqp->hwqp.q2_pbase;
1406 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1407 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1408 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1409 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1410 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1411 ((((u32)nesadapter->max_irrq_wr) <<
1412 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1413 if (disable_mpa_crc) {
1414 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1415 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1416 }
1417
1418
1419 /* Create the QP */
1420 cqp_request = nes_get_cqp_request(nesdev);
1421 if (cqp_request == NULL) {
1422 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1423 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1424 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1425 kfree(nesqp->allocated_buffer);
1426 return ERR_PTR(-ENOMEM);
1427 }
1428 cqp_request->waiting = 1;
1429 cqp_wqe = &cqp_request->cqp_wqe;
1430
1431 if (!virt_wqs) {
1432 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1433 NES_CQP_QP_IWARP_STATE_IDLE;
1434 } else {
1435 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1436 NES_CQP_QP_IWARP_STATE_IDLE;
1437 }
1438 opcode |= NES_CQP_QP_CQS_VALID;
1439 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1440 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1441 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1442
1443 u64temp = (u64)nesqp->nesqp_context_pbase;
1444 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1445
1446 atomic_set(&cqp_request->refcount, 2);
1447 nes_post_cqp_request(nesdev, cqp_request);
1448
1449 /* Wait for CQP */
1450 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1451 nesqp->hwqp.qp_id);
1452 ret = wait_event_timeout(cqp_request->waitq,
1453 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1454 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1455 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1456 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1457 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1458 cqp_request->major_code, cqp_request->minor_code);
1459 if ((!ret) || (cqp_request->major_code)) {
1460 nes_put_cqp_request(nesdev, cqp_request);
1461 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1462 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1463 kfree(nesqp->allocated_buffer);
1464 if (!ret) {
1465 return ERR_PTR(-ETIME);
1466 } else {
1467 return ERR_PTR(-EIO);
1468 }
1469 }
1470
1471 nes_put_cqp_request(nesdev, cqp_request);
1472
1473 if (ibpd->uobject) {
1474 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1475 uresp.actual_sq_size = sq_size;
1476 uresp.actual_rq_size = rq_size;
1477 uresp.qp_id = nesqp->hwqp.qp_id;
1478 uresp.nes_drv_opt = nes_drv_opt;
1479 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1480 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1481 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1482 kfree(nesqp->allocated_buffer);
1483 return ERR_PTR(-EFAULT);
1484 }
1485 }
1486
1487 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1488 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1489 spin_lock_init(&nesqp->lock);
1490 init_waitqueue_head(&nesqp->state_waitq);
1491 init_waitqueue_head(&nesqp->kick_waitq);
1492 nes_add_ref(&nesqp->ibqp);
1493 break;
1494 default:
1495 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1496 return ERR_PTR(-EINVAL);
1497 }
1498
1499 /* update the QP table */
1500 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1501 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1502 atomic_read(&nesvnic->netdev->refcnt));
1503
1504 return &nesqp->ibqp;
1505 }
1506
1507
1508 /**
1509 * nes_destroy_qp
1510 */
1511 static int nes_destroy_qp(struct ib_qp *ibqp)
1512 {
1513 struct nes_qp *nesqp = to_nesqp(ibqp);
1514 /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
1515 struct nes_ucontext *nes_ucontext;
1516 struct ib_qp_attr attr;
1517 struct iw_cm_id *cm_id;
1518 struct iw_cm_event cm_event;
1519 int ret;
1520
1521 atomic_inc(&sw_qps_destroyed);
1522 nesqp->destroyed = 1;
1523
1524 /* Blow away the connection if it exists. */
1525 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1526 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1527 attr.qp_state = IB_QPS_ERR;
1528 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1529 }
1530
1531 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1532 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1533 cm_id = nesqp->cm_id;
1534 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1535 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1536 cm_event.local_addr = cm_id->local_addr;
1537 cm_event.remote_addr = cm_id->remote_addr;
1538 cm_event.private_data = NULL;
1539 cm_event.private_data_len = 0;
1540
1541 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1542 "QP%u. cm_id = %p, refcount = %u. \n",
1543 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1544
1545 cm_id->rem_ref(cm_id);
1546 ret = cm_id->event_handler(cm_id, &cm_event);
1547 if (ret)
1548 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1549 }
1550
1551
1552 if (nesqp->user_mode) {
1553 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1554 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1555 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1556 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1557 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1558 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1559 }
1560 }
1561 if (nesqp->pbl_pbase)
1562 kunmap(nesqp->page);
1563 }
1564
1565 nes_rem_ref(&nesqp->ibqp);
1566 return 0;
1567 }
1568
1569
1570 /**
1571 * nes_create_cq
1572 */
1573 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1574 int comp_vector,
1575 struct ib_ucontext *context, struct ib_udata *udata)
1576 {
1577 u64 u64temp;
1578 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1579 struct nes_device *nesdev = nesvnic->nesdev;
1580 struct nes_adapter *nesadapter = nesdev->nesadapter;
1581 struct nes_cq *nescq;
1582 struct nes_ucontext *nes_ucontext = NULL;
1583 struct nes_cqp_request *cqp_request;
1584 void *mem = NULL;
1585 struct nes_hw_cqp_wqe *cqp_wqe;
1586 struct nes_pbl *nespbl = NULL;
1587 struct nes_create_cq_req req;
1588 struct nes_create_cq_resp resp;
1589 u32 cq_num = 0;
1590 u32 opcode = 0;
1591 u32 pbl_entries = 1;
1592 int err;
1593 unsigned long flags;
1594 int ret;
1595
1596 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1597 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1598 if (err) {
1599 return ERR_PTR(err);
1600 }
1601
1602 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1603 if (!nescq) {
1604 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1605 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1606 return ERR_PTR(-ENOMEM);
1607 }
1608
1609 nescq->hw_cq.cq_size = max(entries + 1, 5);
1610 nescq->hw_cq.cq_number = cq_num;
1611 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1612
1613
1614 if (context) {
1615 nes_ucontext = to_nesucontext(context);
1616 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1617 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1618 kfree(nescq);
1619 return ERR_PTR(-EFAULT);
1620 }
1621 nesvnic->mcrq_ucontext = nes_ucontext;
1622 nes_ucontext->mcrqf = req.mcrqf;
1623 if (nes_ucontext->mcrqf) {
1624 if (nes_ucontext->mcrqf & 0x80000000)
1625 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1626 else if (nes_ucontext->mcrqf & 0x40000000)
1627 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1628 else
1629 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1630 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1631 }
1632 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1633 (unsigned long)req.user_cq_buffer, entries);
1634 err = 1;
1635 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1636 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1637 list_del(&nespbl->list);
1638 err = 0;
1639 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1640 nespbl);
1641 break;
1642 }
1643 }
1644 if (err) {
1645 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1646 kfree(nescq);
1647 return ERR_PTR(-EFAULT);
1648 }
1649
1650 pbl_entries = nespbl->pbl_size >> 3;
1651 nescq->cq_mem_size = 0;
1652 } else {
1653 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1654 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1655 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1656
1657 /* allocate the physical buffer space */
1658 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1659 &nescq->hw_cq.cq_pbase);
1660 if (!mem) {
1661 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1662 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1663 kfree(nescq);
1664 return ERR_PTR(-ENOMEM);
1665 }
1666
1667 memset(mem, 0, nescq->cq_mem_size);
1668 nescq->hw_cq.cq_vbase = mem;
1669 nescq->hw_cq.cq_head = 0;
1670 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1671 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1672 (u32)nescq->hw_cq.cq_pbase);
1673 }
1674
1675 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1676 spin_lock_init(&nescq->lock);
1677
1678 /* send CreateCQ request to CQP */
1679 cqp_request = nes_get_cqp_request(nesdev);
1680 if (cqp_request == NULL) {
1681 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1682 if (!context)
1683 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1684 nescq->hw_cq.cq_pbase);
1685 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1686 kfree(nescq);
1687 return ERR_PTR(-ENOMEM);
1688 }
1689 cqp_request->waiting = 1;
1690 cqp_wqe = &cqp_request->cqp_wqe;
1691
1692 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1693 NES_CQP_CQ_CHK_OVERFLOW |
1694 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1695
1696 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1697
1698 if (pbl_entries != 1) {
1699 if (pbl_entries > 32) {
1700 /* use 4k pbl */
1701 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1702 if (nesadapter->free_4kpbl == 0) {
1703 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1704 nes_free_cqp_request(nesdev, cqp_request);
1705 if (!context)
1706 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1707 nescq->hw_cq.cq_pbase);
1708 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1709 kfree(nescq);
1710 return ERR_PTR(-ENOMEM);
1711 } else {
1712 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1713 nescq->virtual_cq = 2;
1714 nesadapter->free_4kpbl--;
1715 }
1716 } else {
1717 /* use 256 byte pbl */
1718 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1719 if (nesadapter->free_256pbl == 0) {
1720 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1721 nes_free_cqp_request(nesdev, cqp_request);
1722 if (!context)
1723 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1724 nescq->hw_cq.cq_pbase);
1725 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1726 kfree(nescq);
1727 return ERR_PTR(-ENOMEM);
1728 } else {
1729 opcode |= NES_CQP_CQ_VIRT;
1730 nescq->virtual_cq = 1;
1731 nesadapter->free_256pbl--;
1732 }
1733 }
1734 }
1735
1736 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1737
1738 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1739 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1740 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1741 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1742
1743 if (context) {
1744 if (pbl_entries != 1)
1745 u64temp = (u64)nespbl->pbl_pbase;
1746 else
1747 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1748 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1749 nes_ucontext->mmap_db_index[0]);
1750 } else {
1751 u64temp = (u64)nescq->hw_cq.cq_pbase;
1752 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1753 }
1754 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1755 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1756 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1757 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1758 cpu_to_le32((u32)(u64temp >> 1));
1759 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1760 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1761
1762 atomic_set(&cqp_request->refcount, 2);
1763 nes_post_cqp_request(nesdev, cqp_request);
1764
1765 /* Wait for CQP */
1766 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1767 nescq->hw_cq.cq_number);
1768 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1769 NES_EVENT_TIMEOUT * 2);
1770 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1771 nescq->hw_cq.cq_number, ret);
1772 if ((!ret) || (cqp_request->major_code)) {
1773 nes_put_cqp_request(nesdev, cqp_request);
1774 if (!context)
1775 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1776 nescq->hw_cq.cq_pbase);
1777 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1778 kfree(nescq);
1779 return ERR_PTR(-EIO);
1780 }
1781 nes_put_cqp_request(nesdev, cqp_request);
1782
1783 if (context) {
1784 /* free the nespbl */
1785 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1786 nespbl->pbl_pbase);
1787 kfree(nespbl);
1788 resp.cq_id = nescq->hw_cq.cq_number;
1789 resp.cq_size = nescq->hw_cq.cq_size;
1790 resp.mmap_db_index = 0;
1791 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1792 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1793 kfree(nescq);
1794 return ERR_PTR(-EFAULT);
1795 }
1796 }
1797
1798 return &nescq->ibcq;
1799 }
1800
1801
1802 /**
1803 * nes_destroy_cq
1804 */
1805 static int nes_destroy_cq(struct ib_cq *ib_cq)
1806 {
1807 struct nes_cq *nescq;
1808 struct nes_device *nesdev;
1809 struct nes_vnic *nesvnic;
1810 struct nes_adapter *nesadapter;
1811 struct nes_hw_cqp_wqe *cqp_wqe;
1812 struct nes_cqp_request *cqp_request;
1813 unsigned long flags;
1814 u32 opcode = 0;
1815 int ret;
1816
1817 if (ib_cq == NULL)
1818 return 0;
1819
1820 nescq = to_nescq(ib_cq);
1821 nesvnic = to_nesvnic(ib_cq->device);
1822 nesdev = nesvnic->nesdev;
1823 nesadapter = nesdev->nesadapter;
1824
1825 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1826
1827 /* Send DestroyCQ request to CQP */
1828 cqp_request = nes_get_cqp_request(nesdev);
1829 if (cqp_request == NULL) {
1830 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1831 return -ENOMEM;
1832 }
1833 cqp_request->waiting = 1;
1834 cqp_wqe = &cqp_request->cqp_wqe;
1835 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1836 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1837 if (nescq->virtual_cq == 1) {
1838 nesadapter->free_256pbl++;
1839 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1840 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1841 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1842 }
1843 } else if (nescq->virtual_cq == 2) {
1844 nesadapter->free_4kpbl++;
1845 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1846 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1847 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1848 }
1849 opcode |= NES_CQP_CQ_4KB_CHUNK;
1850 }
1851
1852 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1853
1854 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1855 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1856 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1857 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1858 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1859 atomic_set(&cqp_request->refcount, 2);
1860 nes_post_cqp_request(nesdev, cqp_request);
1861
1862 /* Wait for CQP */
1863 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1864 nescq->hw_cq.cq_number);
1865 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1866 NES_EVENT_TIMEOUT);
1867 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1868 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1869 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1870 cqp_request->minor_code);
1871 if (!ret) {
1872 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1873 nescq->hw_cq.cq_number);
1874 ret = -ETIME;
1875 } else if (cqp_request->major_code) {
1876 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1877 nescq->hw_cq.cq_number);
1878 ret = -EIO;
1879 } else {
1880 ret = 0;
1881 }
1882 nes_put_cqp_request(nesdev, cqp_request);
1883
1884 if (nescq->cq_mem_size)
1885 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1886 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1887 kfree(nescq);
1888
1889 return ret;
1890 }
1891
1892 /**
1893 * root_256
1894 */
1895 static u32 root_256(struct nes_device *nesdev,
1896 struct nes_root_vpbl *root_vpbl,
1897 struct nes_root_vpbl *new_root,
1898 u16 pbl_count_4k,
1899 u16 pbl_count_256)
1900 {
1901 u64 leaf_pbl;
1902 int i, j, k;
1903
1904 if (pbl_count_4k == 1) {
1905 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1906 512, &new_root->pbl_pbase);
1907
1908 if (new_root->pbl_vbase == NULL)
1909 return 0;
1910
1911 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1912 for (i = 0; i < 16; i++) {
1913 new_root->pbl_vbase[i].pa_low =
1914 cpu_to_le32((u32)leaf_pbl);
1915 new_root->pbl_vbase[i].pa_high =
1916 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1917 leaf_pbl += 256;
1918 }
1919 } else {
1920 for (i = 3; i >= 0; i--) {
1921 j = i * 16;
1922 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1923 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1924 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1925 << 32);
1926 for (k = 1; k < 16; k++) {
1927 leaf_pbl += 256;
1928 root_vpbl->pbl_vbase[j + k].pa_low =
1929 cpu_to_le32((u32)leaf_pbl);
1930 root_vpbl->pbl_vbase[j + k].pa_high =
1931 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1932 }
1933 }
1934 }
1935
1936 return 1;
1937 }
1938
1939
1940 /**
1941 * nes_reg_mr
1942 */
1943 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1944 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1945 dma_addr_t single_buffer, u16 pbl_count_4k,
1946 u16 residual_page_count_4k, int acc, u64 *iova_start,
1947 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1948 {
1949 struct nes_hw_cqp_wqe *cqp_wqe;
1950 struct nes_cqp_request *cqp_request;
1951 unsigned long flags;
1952 int ret;
1953 struct nes_adapter *nesadapter = nesdev->nesadapter;
1954 uint pg_cnt = 0;
1955 u16 pbl_count_256;
1956 u16 pbl_count = 0;
1957 u8 use_256_pbls = 0;
1958 u8 use_4k_pbls = 0;
1959 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1960 struct nes_root_vpbl new_root = {0, 0, 0};
1961 u32 opcode = 0;
1962 u16 major_code;
1963
1964 /* Register the region with the adapter */
1965 cqp_request = nes_get_cqp_request(nesdev);
1966 if (cqp_request == NULL) {
1967 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1968 return -ENOMEM;
1969 }
1970 cqp_request->waiting = 1;
1971 cqp_wqe = &cqp_request->cqp_wqe;
1972
1973 if (pbl_count_4k) {
1974 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1975
1976 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1977 pbl_count_256 = (pg_cnt + 31) / 32;
1978 if (pg_cnt <= 32) {
1979 if (pbl_count_256 <= nesadapter->free_256pbl)
1980 use_256_pbls = 1;
1981 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1982 use_4k_pbls = 1;
1983 } else if (pg_cnt <= 2048) {
1984 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1985 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1986 use_4k_pbls = 1;
1987 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1988 use_256_pbls = 1;
1989 use_two_level = 1;
1990 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1991 use_4k_pbls = 1;
1992 }
1993 } else {
1994 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1995 use_4k_pbls = 1;
1996 }
1997
1998 if (use_256_pbls) {
1999 pbl_count = pbl_count_256;
2000 nesadapter->free_256pbl -= pbl_count + use_two_level;
2001 } else if (use_4k_pbls) {
2002 pbl_count = pbl_count_4k;
2003 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2004 } else {
2005 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2006 nes_debug(NES_DBG_MR, "Out of Pbls\n");
2007 nes_free_cqp_request(nesdev, cqp_request);
2008 return -ENOMEM;
2009 }
2010
2011 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2012 }
2013
2014 if (use_256_pbls && use_two_level) {
2015 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k, pbl_count_256) == 1) {
2016 if (new_root.pbl_pbase != 0)
2017 root_vpbl = &new_root;
2018 } else {
2019 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2020 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2021 use_256_pbls = 0;
2022
2023 if (pbl_count_4k == 1)
2024 use_two_level = 0;
2025 pbl_count = pbl_count_4k;
2026
2027 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2028 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2029 use_4k_pbls = 1;
2030 }
2031 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2032
2033 if (use_4k_pbls == 0)
2034 return -ENOMEM;
2035 }
2036 }
2037
2038 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2039 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2040 if (acc & IB_ACCESS_LOCAL_WRITE)
2041 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2042 if (acc & IB_ACCESS_REMOTE_WRITE)
2043 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2044 if (acc & IB_ACCESS_REMOTE_READ)
2045 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2046 if (acc & IB_ACCESS_MW_BIND)
2047 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2048
2049 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2050 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2051 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2052 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2053
2054 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2055 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2056 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2057 cpu_to_le32(nespd->pd_id & 0x00007fff);
2058 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2059
2060 if (pbl_count == 0) {
2061 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2062 } else {
2063 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2064 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2065 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2066
2067 if (use_4k_pbls)
2068 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2069 }
2070 barrier();
2071
2072 atomic_set(&cqp_request->refcount, 2);
2073 nes_post_cqp_request(nesdev, cqp_request);
2074
2075 /* Wait for CQP */
2076 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2077 NES_EVENT_TIMEOUT);
2078 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2079 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2080 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2081 major_code = cqp_request->major_code;
2082 nes_put_cqp_request(nesdev, cqp_request);
2083
2084 if ((!ret || major_code) && pbl_count != 0) {
2085 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2086 if (use_256_pbls)
2087 nesadapter->free_256pbl += pbl_count + use_two_level;
2088 else if (use_4k_pbls)
2089 nesadapter->free_4kpbl += pbl_count + use_two_level;
2090 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2091 }
2092 if (new_root.pbl_pbase)
2093 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2094 new_root.pbl_pbase);
2095
2096 if (!ret)
2097 return -ETIME;
2098 else if (major_code)
2099 return -EIO;
2100
2101 *actual_pbl_cnt = pbl_count + use_two_level;
2102 *used_4k_pbls = use_4k_pbls;
2103 return 0;
2104 }
2105
2106
2107 /**
2108 * nes_reg_phys_mr
2109 */
2110 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2111 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2112 u64 * iova_start)
2113 {
2114 u64 region_length;
2115 struct nes_pd *nespd = to_nespd(ib_pd);
2116 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2117 struct nes_device *nesdev = nesvnic->nesdev;
2118 struct nes_adapter *nesadapter = nesdev->nesadapter;
2119 struct nes_mr *nesmr;
2120 struct ib_mr *ibmr;
2121 struct nes_vpbl vpbl;
2122 struct nes_root_vpbl root_vpbl;
2123 u32 stag;
2124 u32 i;
2125 u32 stag_index = 0;
2126 u32 next_stag_index = 0;
2127 u32 driver_key = 0;
2128 u32 root_pbl_index = 0;
2129 u32 cur_pbl_index = 0;
2130 int err = 0, pbl_depth = 0;
2131 int ret = 0;
2132 u16 pbl_count = 0;
2133 u8 single_page = 1;
2134 u8 stag_key = 0;
2135
2136 pbl_depth = 0;
2137 region_length = 0;
2138 vpbl.pbl_vbase = NULL;
2139 root_vpbl.pbl_vbase = NULL;
2140 root_vpbl.pbl_pbase = 0;
2141
2142 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2143 stag_key = (u8)next_stag_index;
2144
2145 driver_key = 0;
2146
2147 next_stag_index >>= 8;
2148 next_stag_index %= nesadapter->max_mr;
2149 if (num_phys_buf > (1024*512)) {
2150 return ERR_PTR(-E2BIG);
2151 }
2152
2153 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2154 &stag_index, &next_stag_index);
2155 if (err) {
2156 return ERR_PTR(err);
2157 }
2158
2159 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2160 if (!nesmr) {
2161 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2162 return ERR_PTR(-ENOMEM);
2163 }
2164
2165 for (i = 0; i < num_phys_buf; i++) {
2166
2167 if ((i & 0x01FF) == 0) {
2168 if (root_pbl_index == 1) {
2169 /* Allocate the root PBL */
2170 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2171 &root_vpbl.pbl_pbase);
2172 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2173 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2174 if (!root_vpbl.pbl_vbase) {
2175 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2176 vpbl.pbl_pbase);
2177 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2178 kfree(nesmr);
2179 return ERR_PTR(-ENOMEM);
2180 }
2181 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2182 if (!root_vpbl.leaf_vpbl) {
2183 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2184 root_vpbl.pbl_pbase);
2185 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2186 vpbl.pbl_pbase);
2187 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2188 kfree(nesmr);
2189 return ERR_PTR(-ENOMEM);
2190 }
2191 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2192 root_vpbl.pbl_vbase[0].pa_high =
2193 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2194 root_vpbl.leaf_vpbl[0] = vpbl;
2195 }
2196 /* Allocate a 4K buffer for the PBL */
2197 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2198 &vpbl.pbl_pbase);
2199 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2200 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2201 if (!vpbl.pbl_vbase) {
2202 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2203 ibmr = ERR_PTR(-ENOMEM);
2204 kfree(nesmr);
2205 goto reg_phys_err;
2206 }
2207 /* Fill in the root table */
2208 if (1 <= root_pbl_index) {
2209 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2210 cpu_to_le32((u32)vpbl.pbl_pbase);
2211 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2212 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2213 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2214 }
2215 root_pbl_index++;
2216 cur_pbl_index = 0;
2217 }
2218 if (buffer_list[i].addr & ~PAGE_MASK) {
2219 /* TODO: Unwind allocated buffers */
2220 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2221 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2222 (unsigned int) buffer_list[i].addr);
2223 ibmr = ERR_PTR(-EINVAL);
2224 kfree(nesmr);
2225 goto reg_phys_err;
2226 }
2227
2228 if (!buffer_list[i].size) {
2229 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2230 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2231 ibmr = ERR_PTR(-EINVAL);
2232 kfree(nesmr);
2233 goto reg_phys_err;
2234 }
2235
2236 region_length += buffer_list[i].size;
2237 if ((i != 0) && (single_page)) {
2238 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2239 single_page = 0;
2240 }
2241 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr);
2242 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2243 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2244 }
2245
2246 stag = stag_index << 8;
2247 stag |= driver_key;
2248 stag += (u32)stag_key;
2249
2250 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2251 " length = 0x%016lX, index = 0x%08X\n",
2252 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2253
2254 region_length -= (*iova_start)&PAGE_MASK;
2255
2256 /* Make the leaf PBL the root if only one PBL */
2257 if (root_pbl_index == 1) {
2258 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2259 }
2260
2261 if (single_page) {
2262 pbl_count = 0;
2263 } else {
2264 pbl_count = root_pbl_index;
2265 }
2266 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2267 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2268 &nesmr->pbls_used, &nesmr->pbl_4k);
2269
2270 if (ret == 0) {
2271 nesmr->ibmr.rkey = stag;
2272 nesmr->ibmr.lkey = stag;
2273 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2274 ibmr = &nesmr->ibmr;
2275 } else {
2276 kfree(nesmr);
2277 ibmr = ERR_PTR(-ENOMEM);
2278 }
2279
2280 reg_phys_err:
2281 /* free the resources */
2282 if (root_pbl_index == 1) {
2283 /* single PBL case */
2284 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2285 } else {
2286 for (i=0; i<root_pbl_index; i++) {
2287 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2288 root_vpbl.leaf_vpbl[i].pbl_pbase);
2289 }
2290 kfree(root_vpbl.leaf_vpbl);
2291 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2292 root_vpbl.pbl_pbase);
2293 }
2294
2295 return ibmr;
2296 }
2297
2298
2299 /**
2300 * nes_get_dma_mr
2301 */
2302 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2303 {
2304 struct ib_phys_buf bl;
2305 u64 kva = 0;
2306
2307 nes_debug(NES_DBG_MR, "\n");
2308
2309 bl.size = (u64)0xffffffffffULL;
2310 bl.addr = 0;
2311 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2312 }
2313
2314
2315 /**
2316 * nes_reg_user_mr
2317 */
2318 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2319 u64 virt, int acc, struct ib_udata *udata)
2320 {
2321 u64 iova_start;
2322 __le64 *pbl;
2323 u64 region_length;
2324 dma_addr_t last_dma_addr = 0;
2325 dma_addr_t first_dma_addr = 0;
2326 struct nes_pd *nespd = to_nespd(pd);
2327 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2328 struct nes_device *nesdev = nesvnic->nesdev;
2329 struct nes_adapter *nesadapter = nesdev->nesadapter;
2330 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2331 struct ib_umem_chunk *chunk;
2332 struct nes_ucontext *nes_ucontext;
2333 struct nes_pbl *nespbl;
2334 struct nes_mr *nesmr;
2335 struct ib_umem *region;
2336 struct nes_mem_reg_req req;
2337 struct nes_vpbl vpbl;
2338 struct nes_root_vpbl root_vpbl;
2339 int nmap_index, page_index;
2340 int page_count = 0;
2341 int err, pbl_depth = 0;
2342 int chunk_pages;
2343 int ret;
2344 u32 stag;
2345 u32 stag_index = 0;
2346 u32 next_stag_index;
2347 u32 driver_key;
2348 u32 root_pbl_index = 0;
2349 u32 cur_pbl_index = 0;
2350 u32 skip_pages;
2351 u16 pbl_count;
2352 u8 single_page = 1;
2353 u8 stag_key;
2354
2355 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2356 if (IS_ERR(region)) {
2357 return (struct ib_mr *)region;
2358 }
2359
2360 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2361 " offset = %u, page size = %u.\n",
2362 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2363 region->offset, region->page_size);
2364
2365 skip_pages = ((u32)region->offset) >> 12;
2366
2367 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2368 return ERR_PTR(-EFAULT);
2369 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2370
2371 switch (req.reg_type) {
2372 case IWNES_MEMREG_TYPE_MEM:
2373 pbl_depth = 0;
2374 region_length = 0;
2375 vpbl.pbl_vbase = NULL;
2376 root_vpbl.pbl_vbase = NULL;
2377 root_vpbl.pbl_pbase = 0;
2378
2379 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2380 stag_key = (u8)next_stag_index;
2381
2382 driver_key = next_stag_index & 0x70000000;
2383
2384 next_stag_index >>= 8;
2385 next_stag_index %= nesadapter->max_mr;
2386
2387 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2388 nesadapter->max_mr, &stag_index, &next_stag_index);
2389 if (err) {
2390 ib_umem_release(region);
2391 return ERR_PTR(err);
2392 }
2393
2394 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2395 if (!nesmr) {
2396 ib_umem_release(region);
2397 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2398 return ERR_PTR(-ENOMEM);
2399 }
2400 nesmr->region = region;
2401
2402 list_for_each_entry(chunk, &region->chunk_list, list) {
2403 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2404 chunk->nents, chunk->nmap);
2405 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2406 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2407 ib_umem_release(region);
2408 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2409 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2410 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2411 ibmr = ERR_PTR(-EINVAL);
2412 kfree(nesmr);
2413 goto reg_user_mr_err;
2414 }
2415
2416 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2417 ib_umem_release(region);
2418 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2419 stag_index);
2420 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2421 ibmr = ERR_PTR(-EINVAL);
2422 kfree(nesmr);
2423 goto reg_user_mr_err;
2424 }
2425
2426 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2427 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2428 region_length -= skip_pages << 12;
2429 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2430 skip_pages = 0;
2431 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2432 goto enough_pages;
2433 if ((page_count&0x01FF) == 0) {
2434 if (page_count >= 1024 * 512) {
2435 ib_umem_release(region);
2436 nes_free_resource(nesadapter,
2437 nesadapter->allocated_mrs, stag_index);
2438 kfree(nesmr);
2439 ibmr = ERR_PTR(-E2BIG);
2440 goto reg_user_mr_err;
2441 }
2442 if (root_pbl_index == 1) {
2443 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2444 8192, &root_vpbl.pbl_pbase);
2445 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2446 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2447 if (!root_vpbl.pbl_vbase) {
2448 ib_umem_release(region);
2449 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2450 vpbl.pbl_pbase);
2451 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2452 stag_index);
2453 kfree(nesmr);
2454 ibmr = ERR_PTR(-ENOMEM);
2455 goto reg_user_mr_err;
2456 }
2457 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2458 GFP_KERNEL);
2459 if (!root_vpbl.leaf_vpbl) {
2460 ib_umem_release(region);
2461 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2462 root_vpbl.pbl_pbase);
2463 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2464 vpbl.pbl_pbase);
2465 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2466 stag_index);
2467 kfree(nesmr);
2468 ibmr = ERR_PTR(-ENOMEM);
2469 goto reg_user_mr_err;
2470 }
2471 root_vpbl.pbl_vbase[0].pa_low =
2472 cpu_to_le32((u32)vpbl.pbl_pbase);
2473 root_vpbl.pbl_vbase[0].pa_high =
2474 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2475 root_vpbl.leaf_vpbl[0] = vpbl;
2476 }
2477 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2478 &vpbl.pbl_pbase);
2479 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2480 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2481 if (!vpbl.pbl_vbase) {
2482 ib_umem_release(region);
2483 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2484 ibmr = ERR_PTR(-ENOMEM);
2485 kfree(nesmr);
2486 goto reg_user_mr_err;
2487 }
2488 if (1 <= root_pbl_index) {
2489 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2490 cpu_to_le32((u32)vpbl.pbl_pbase);
2491 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2492 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2493 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2494 }
2495 root_pbl_index++;
2496 cur_pbl_index = 0;
2497 }
2498 if (single_page) {
2499 if (page_count != 0) {
2500 if ((last_dma_addr+4096) !=
2501 (sg_dma_address(&chunk->page_list[nmap_index])+
2502 (page_index*4096)))
2503 single_page = 0;
2504 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2505 (page_index*4096);
2506 } else {
2507 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2508 (page_index*4096);
2509 last_dma_addr = first_dma_addr;
2510 }
2511 }
2512
2513 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2514 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2515 (page_index*4096)));
2516 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2517 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2518 (page_index*4096))) >> 32)));
2519 cur_pbl_index++;
2520 page_count++;
2521 }
2522 }
2523 }
2524 enough_pages:
2525 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2526 " stag_key=0x%08x\n",
2527 stag_index, driver_key, stag_key);
2528 stag = stag_index << 8;
2529 stag |= driver_key;
2530 stag += (u32)stag_key;
2531 if (stag == 0) {
2532 stag = 1;
2533 }
2534
2535 iova_start = virt;
2536 /* Make the leaf PBL the root if only one PBL */
2537 if (root_pbl_index == 1) {
2538 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2539 }
2540
2541 if (single_page) {
2542 pbl_count = 0;
2543 } else {
2544 pbl_count = root_pbl_index;
2545 first_dma_addr = 0;
2546 }
2547 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2548 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2549 stag, (unsigned int)iova_start,
2550 (unsigned int)region_length, stag_index,
2551 (unsigned long long)region->length, pbl_count);
2552 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2553 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2554 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2555
2556 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2557
2558 if (ret == 0) {
2559 nesmr->ibmr.rkey = stag;
2560 nesmr->ibmr.lkey = stag;
2561 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2562 ibmr = &nesmr->ibmr;
2563 } else {
2564 ib_umem_release(region);
2565 kfree(nesmr);
2566 ibmr = ERR_PTR(-ENOMEM);
2567 }
2568
2569 reg_user_mr_err:
2570 /* free the resources */
2571 if (root_pbl_index == 1) {
2572 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2573 vpbl.pbl_pbase);
2574 } else {
2575 for (page_index=0; page_index<root_pbl_index; page_index++) {
2576 pci_free_consistent(nesdev->pcidev, 4096,
2577 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2578 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2579 }
2580 kfree(root_vpbl.leaf_vpbl);
2581 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2582 root_vpbl.pbl_pbase);
2583 }
2584
2585 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2586
2587 return ibmr;
2588 case IWNES_MEMREG_TYPE_QP:
2589 case IWNES_MEMREG_TYPE_CQ:
2590 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2591 if (!nespbl) {
2592 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2593 ib_umem_release(region);
2594 return ERR_PTR(-ENOMEM);
2595 }
2596 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2597 if (!nesmr) {
2598 ib_umem_release(region);
2599 kfree(nespbl);
2600 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2601 return ERR_PTR(-ENOMEM);
2602 }
2603 nesmr->region = region;
2604 nes_ucontext = to_nesucontext(pd->uobject->context);
2605 pbl_depth = region->length >> 12;
2606 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2607 nespbl->pbl_size = pbl_depth*sizeof(u64);
2608 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2609 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2610 } else {
2611 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2612 }
2613
2614 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2615 nespbl->pbl_size, pbl_depth);
2616 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2617 &nespbl->pbl_pbase);
2618 if (!pbl) {
2619 ib_umem_release(region);
2620 kfree(nesmr);
2621 kfree(nespbl);
2622 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2623 return ERR_PTR(-ENOMEM);
2624 }
2625
2626 nespbl->pbl_vbase = (u64 *)pbl;
2627 nespbl->user_base = start;
2628 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2629 " pbl_vbase=%p user_base=0x%lx\n",
2630 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2631 (void *) nespbl->pbl_vbase, nespbl->user_base);
2632
2633 list_for_each_entry(chunk, &region->chunk_list, list) {
2634 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2635 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2636 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2637 nespbl->page = sg_page(&chunk->page_list[0]);
2638 for (page_index=0; page_index<chunk_pages; page_index++) {
2639 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2640 (sg_dma_address(&chunk->page_list[nmap_index])+
2641 (page_index*4096)));
2642 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2643 (sg_dma_address(&chunk->page_list[nmap_index])+
2644 (page_index*4096)))>>32);
2645 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2646 (unsigned long long)*pbl,
2647 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2648 pbl++;
2649 }
2650 }
2651 }
2652 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2653 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2654 } else {
2655 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2656 }
2657 nesmr->ibmr.rkey = -1;
2658 nesmr->ibmr.lkey = -1;
2659 nesmr->mode = req.reg_type;
2660 return &nesmr->ibmr;
2661 }
2662
2663 return ERR_PTR(-ENOSYS);
2664 }
2665
2666
2667 /**
2668 * nes_dereg_mr
2669 */
2670 static int nes_dereg_mr(struct ib_mr *ib_mr)
2671 {
2672 struct nes_mr *nesmr = to_nesmr(ib_mr);
2673 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2674 struct nes_device *nesdev = nesvnic->nesdev;
2675 struct nes_adapter *nesadapter = nesdev->nesadapter;
2676 struct nes_hw_cqp_wqe *cqp_wqe;
2677 struct nes_cqp_request *cqp_request;
2678 unsigned long flags;
2679 int ret;
2680 u16 major_code;
2681 u16 minor_code;
2682
2683 if (nesmr->region) {
2684 ib_umem_release(nesmr->region);
2685 }
2686 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2687 kfree(nesmr);
2688 return 0;
2689 }
2690
2691 /* Deallocate the region with the adapter */
2692
2693 cqp_request = nes_get_cqp_request(nesdev);
2694 if (cqp_request == NULL) {
2695 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2696 return -ENOMEM;
2697 }
2698 cqp_request->waiting = 1;
2699 cqp_wqe = &cqp_request->cqp_wqe;
2700
2701 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2702 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2703 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2704 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2705 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2706
2707 atomic_set(&cqp_request->refcount, 2);
2708 nes_post_cqp_request(nesdev, cqp_request);
2709
2710 /* Wait for CQP */
2711 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2712 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2713 NES_EVENT_TIMEOUT);
2714 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2715 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2716 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2717
2718 major_code = cqp_request->major_code;
2719 minor_code = cqp_request->minor_code;
2720
2721 nes_put_cqp_request(nesdev, cqp_request);
2722
2723 if (!ret) {
2724 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2725 " ib_mr=%p, rkey = 0x%08X\n",
2726 ib_mr, ib_mr->rkey);
2727 return -ETIME;
2728 } else if (major_code) {
2729 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2730 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2731 major_code, minor_code, ib_mr, ib_mr->rkey);
2732 return -EIO;
2733 }
2734
2735 if (nesmr->pbls_used != 0) {
2736 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2737 if (nesmr->pbl_4k) {
2738 nesadapter->free_4kpbl += nesmr->pbls_used;
2739 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2740 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2741 "exceeded the max(%u)\n",
2742 nesadapter->free_4kpbl,
2743 nesadapter->max_4kpbl);
2744 } else {
2745 nesadapter->free_256pbl += nesmr->pbls_used;
2746 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2747 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2748 "exceeded the max(%u)\n",
2749 nesadapter->free_256pbl,
2750 nesadapter->max_256pbl);
2751 }
2752 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2753 }
2754 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2755 (ib_mr->rkey & 0x0fffff00) >> 8);
2756
2757 kfree(nesmr);
2758
2759 return 0;
2760 }
2761
2762
2763 /**
2764 * show_rev
2765 */
2766 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2767 char *buf)
2768 {
2769 struct nes_ib_device *nesibdev =
2770 container_of(dev, struct nes_ib_device, ibdev.dev);
2771 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2772
2773 nes_debug(NES_DBG_INIT, "\n");
2774 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2775 }
2776
2777
2778 /**
2779 * show_fw_ver
2780 */
2781 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2782 char *buf)
2783 {
2784 struct nes_ib_device *nesibdev =
2785 container_of(dev, struct nes_ib_device, ibdev.dev);
2786 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2787
2788 nes_debug(NES_DBG_INIT, "\n");
2789 return sprintf(buf, "%x.%x.%x\n",
2790 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 32),
2791 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 16) & 0xffff,
2792 (int)(nesvnic->nesdev->nesadapter->fw_ver & 0xffff));
2793 }
2794
2795
2796 /**
2797 * show_hca
2798 */
2799 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2800 char *buf)
2801 {
2802 nes_debug(NES_DBG_INIT, "\n");
2803 return sprintf(buf, "NES020\n");
2804 }
2805
2806
2807 /**
2808 * show_board
2809 */
2810 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2811 char *buf)
2812 {
2813 nes_debug(NES_DBG_INIT, "\n");
2814 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2815 }
2816
2817
2818 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2819 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2820 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2821 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2822
2823 static struct device_attribute *nes_dev_attributes[] = {
2824 &dev_attr_hw_rev,
2825 &dev_attr_fw_ver,
2826 &dev_attr_hca_type,
2827 &dev_attr_board_id
2828 };
2829
2830
2831 /**
2832 * nes_query_qp
2833 */
2834 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2835 int attr_mask, struct ib_qp_init_attr *init_attr)
2836 {
2837 struct nes_qp *nesqp = to_nesqp(ibqp);
2838
2839 nes_debug(NES_DBG_QP, "\n");
2840
2841 attr->qp_access_flags = 0;
2842 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2843 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2844 attr->cap.max_recv_sge = 1;
2845 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2846 init_attr->cap.max_inline_data = 0;
2847 } else {
2848 init_attr->cap.max_inline_data = 64;
2849 }
2850
2851 init_attr->event_handler = nesqp->ibqp.event_handler;
2852 init_attr->qp_context = nesqp->ibqp.qp_context;
2853 init_attr->send_cq = nesqp->ibqp.send_cq;
2854 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2855 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2856 init_attr->cap = attr->cap;
2857
2858 return 0;
2859 }
2860
2861
2862 /**
2863 * nes_hw_modify_qp
2864 */
2865 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2866 u32 next_iwarp_state, u32 wait_completion)
2867 {
2868 struct nes_hw_cqp_wqe *cqp_wqe;
2869 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2870 /* struct iw_cm_event cm_event; */
2871 struct nes_cqp_request *cqp_request;
2872 int ret;
2873 u16 major_code;
2874
2875 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2876 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2877
2878 cqp_request = nes_get_cqp_request(nesdev);
2879 if (cqp_request == NULL) {
2880 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2881 return -ENOMEM;
2882 }
2883 if (wait_completion) {
2884 cqp_request->waiting = 1;
2885 } else {
2886 cqp_request->waiting = 0;
2887 }
2888 cqp_wqe = &cqp_request->cqp_wqe;
2889
2890 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2891 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2892 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2893 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2894 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2895 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2896 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2897
2898 atomic_set(&cqp_request->refcount, 2);
2899 nes_post_cqp_request(nesdev, cqp_request);
2900
2901 /* Wait for CQP */
2902 if (wait_completion) {
2903 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2904 nesqp->hwqp.qp_id); */
2905 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2906 NES_EVENT_TIMEOUT);
2907 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2908 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2909 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2910 major_code = cqp_request->major_code;
2911 if (major_code) {
2912 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2913 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2914 nesqp->hwqp.qp_id, cqp_request->major_code,
2915 cqp_request->minor_code, next_iwarp_state);
2916 }
2917
2918 nes_put_cqp_request(nesdev, cqp_request);
2919
2920 if (!ret)
2921 return -ETIME;
2922 else if (major_code)
2923 return -EIO;
2924 else
2925 return 0;
2926 } else {
2927 return 0;
2928 }
2929 }
2930
2931
2932 /**
2933 * nes_modify_qp
2934 */
2935 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2936 int attr_mask, struct ib_udata *udata)
2937 {
2938 struct nes_qp *nesqp = to_nesqp(ibqp);
2939 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2940 struct nes_device *nesdev = nesvnic->nesdev;
2941 /* u32 cqp_head; */
2942 /* u32 counter; */
2943 u32 next_iwarp_state = 0;
2944 int err;
2945 unsigned long qplockflags;
2946 int ret;
2947 u16 original_last_aeq;
2948 u8 issue_modify_qp = 0;
2949 u8 issue_disconnect = 0;
2950 u8 dont_wait = 0;
2951
2952 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2953 " iwarp_state=0x%X, refcount=%d\n",
2954 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2955 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2956
2957 spin_lock_irqsave(&nesqp->lock, qplockflags);
2958
2959 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2960 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2961 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2962 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2963
2964 if (attr_mask & IB_QP_STATE) {
2965 switch (attr->qp_state) {
2966 case IB_QPS_INIT:
2967 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2968 nesqp->hwqp.qp_id);
2969 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2970 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2971 return -EINVAL;
2972 }
2973 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2974 issue_modify_qp = 1;
2975 break;
2976 case IB_QPS_RTR:
2977 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2978 nesqp->hwqp.qp_id);
2979 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2980 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2981 return -EINVAL;
2982 }
2983 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2984 issue_modify_qp = 1;
2985 break;
2986 case IB_QPS_RTS:
2987 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2988 nesqp->hwqp.qp_id);
2989 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2990 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2991 return -EINVAL;
2992 }
2993 if (nesqp->cm_id == NULL) {
2994 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2995 nesqp->hwqp.qp_id );
2996 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2997 return -EINVAL;
2998 }
2999 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
3000 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
3001 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3002 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3003 issue_modify_qp = 1;
3004 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3005 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3006 nesqp->hte_added = 1;
3007 break;
3008 case IB_QPS_SQD:
3009 issue_modify_qp = 1;
3010 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3011 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3012 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3013 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3014 return 0;
3015 } else {
3016 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3017 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3018 " ignored due to current iWARP state\n",
3019 nesqp->hwqp.qp_id);
3020 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3021 return -EINVAL;
3022 }
3023 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3024 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3025 " already done based on hw state.\n",
3026 nesqp->hwqp.qp_id);
3027 issue_modify_qp = 0;
3028 nesqp->in_disconnect = 0;
3029 }
3030 switch (nesqp->hw_iwarp_state) {
3031 case NES_AEQE_IWARP_STATE_CLOSING:
3032 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3033 case NES_AEQE_IWARP_STATE_TERMINATE:
3034 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3035 break;
3036 case NES_AEQE_IWARP_STATE_ERROR:
3037 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3038 break;
3039 default:
3040 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3041 nesqp->in_disconnect = 1;
3042 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3043 break;
3044 }
3045 }
3046 break;
3047 case IB_QPS_SQE:
3048 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3049 nesqp->hwqp.qp_id);
3050 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3051 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3052 return -EINVAL;
3053 }
3054 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3055 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3056 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3057 issue_modify_qp = 1;
3058 nesqp->in_disconnect = 1;
3059 break;
3060 case IB_QPS_ERR:
3061 case IB_QPS_RESET:
3062 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3063 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3064 return -EINVAL;
3065 }
3066 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3067 nesqp->hwqp.qp_id);
3068 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3069 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3070 if (nesqp->hte_added) {
3071 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3072 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3073 nesqp->hte_added = 0;
3074 }
3075 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3076 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3077 next_iwarp_state |= NES_CQP_QP_RESET;
3078 nesqp->in_disconnect = 1;
3079 } else {
3080 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3081 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3082 dont_wait = 1;
3083 }
3084 issue_modify_qp = 1;
3085 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3086 break;
3087 default:
3088 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3089 return -EINVAL;
3090 break;
3091 }
3092
3093 nesqp->ibqp_state = attr->qp_state;
3094 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3095 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3096 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3097 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3098 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3099 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3100 nesqp->iwarp_state);
3101 issue_disconnect = 1;
3102 } else {
3103 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3104 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3105 nesqp->iwarp_state);
3106 }
3107 }
3108
3109 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3110 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3111 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3112 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3113 issue_modify_qp = 1;
3114 }
3115 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3116 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3117 issue_modify_qp = 1;
3118 }
3119 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3120 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3121 issue_modify_qp = 1;
3122 }
3123 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3124 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3125 issue_modify_qp = 1;
3126 }
3127
3128 if (nesqp->user_mode) {
3129 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3130 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3131 issue_modify_qp = 1;
3132 }
3133 }
3134
3135 original_last_aeq = nesqp->last_aeq;
3136 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3137
3138 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3139
3140 ret = 0;
3141
3142
3143 if (issue_modify_qp) {
3144 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3145 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
3146 if (ret)
3147 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3148 " failed for QP%u.\n",
3149 next_iwarp_state, nesqp->hwqp.qp_id);
3150
3151 }
3152
3153 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3154 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3155 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3156 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3157 original_last_aeq, nesqp->last_aeq);
3158 if ((!ret) ||
3159 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3160 (ret))) {
3161 if (dont_wait) {
3162 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3163 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3164 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3165 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3166 original_last_aeq, nesqp->last_aeq);
3167 /* this one is for the cm_disconnect thread */
3168 spin_lock_irqsave(&nesqp->lock, qplockflags);
3169 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3170 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3171 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3172 nes_cm_disconn(nesqp);
3173 } else {
3174 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3175 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3176 }
3177 } else {
3178 spin_lock_irqsave(&nesqp->lock, qplockflags);
3179 if (nesqp->cm_id) {
3180 /* These two are for the timer thread */
3181 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3182 nesqp->cm_id->add_ref(nesqp->cm_id);
3183 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3184 " need ae to finish up, original_last_aeq = 0x%04X."
3185 " last_aeq = 0x%04X, scheduling timer.\n",
3186 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3187 original_last_aeq, nesqp->last_aeq);
3188 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3189 }
3190 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3191 } else {
3192 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3193 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3194 " need ae to finish up, original_last_aeq = 0x%04X."
3195 " last_aeq = 0x%04X.\n",
3196 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3197 original_last_aeq, nesqp->last_aeq);
3198 }
3199 }
3200 } else {
3201 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3202 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3203 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3204 original_last_aeq, nesqp->last_aeq);
3205 }
3206 } else {
3207 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3208 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3209 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3210 original_last_aeq, nesqp->last_aeq);
3211 }
3212
3213 err = 0;
3214
3215 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3216 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3217
3218 return err;
3219 }
3220
3221
3222 /**
3223 * nes_muticast_attach
3224 */
3225 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3226 {
3227 nes_debug(NES_DBG_INIT, "\n");
3228 return -ENOSYS;
3229 }
3230
3231
3232 /**
3233 * nes_multicast_detach
3234 */
3235 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3236 {
3237 nes_debug(NES_DBG_INIT, "\n");
3238 return -ENOSYS;
3239 }
3240
3241
3242 /**
3243 * nes_process_mad
3244 */
3245 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3246 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3247 struct ib_mad *in_mad, struct ib_mad *out_mad)
3248 {
3249 nes_debug(NES_DBG_INIT, "\n");
3250 return -ENOSYS;
3251 }
3252
3253 static inline void
3254 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3255 {
3256 int sge_index;
3257 int total_payload_length = 0;
3258 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3259 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3260 ib_wr->sg_list[sge_index].addr);
3261 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3262 ib_wr->sg_list[sge_index].length);
3263 if (uselkey)
3264 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3265 (ib_wr->sg_list[sge_index].lkey));
3266 else
3267 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3268
3269 total_payload_length += ib_wr->sg_list[sge_index].length;
3270 }
3271 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3272 total_payload_length);
3273 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3274 total_payload_length);
3275 }
3276
3277 /**
3278 * nes_post_send
3279 */
3280 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3281 struct ib_send_wr **bad_wr)
3282 {
3283 u64 u64temp;
3284 unsigned long flags = 0;
3285 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3286 struct nes_device *nesdev = nesvnic->nesdev;
3287 struct nes_qp *nesqp = to_nesqp(ibqp);
3288 struct nes_hw_qp_wqe *wqe;
3289 int err;
3290 u32 qsize = nesqp->hwqp.sq_size;
3291 u32 head;
3292 u32 wqe_misc;
3293 u32 wqe_count;
3294 u32 counter;
3295 u32 total_payload_length;
3296
3297 err = 0;
3298 wqe_misc = 0;
3299 wqe_count = 0;
3300 total_payload_length = 0;
3301
3302 if (nesqp->ibqp_state > IB_QPS_RTS)
3303 return -EINVAL;
3304
3305 spin_lock_irqsave(&nesqp->lock, flags);
3306
3307 head = nesqp->hwqp.sq_head;
3308
3309 while (ib_wr) {
3310 /* Check for SQ overflow */
3311 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3312 err = -EINVAL;
3313 break;
3314 }
3315
3316 wqe = &nesqp->hwqp.sq_vbase[head];
3317 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3318 nesqp->hwqp.qp_id, wqe, head); */
3319 nes_fill_init_qp_wqe(wqe, nesqp, head);
3320 u64temp = (u64)(ib_wr->wr_id);
3321 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3322 u64temp);
3323 switch (ib_wr->opcode) {
3324 case IB_WR_SEND:
3325 if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3326 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3327 } else {
3328 wqe_misc = NES_IWARP_SQ_OP_SEND;
3329 }
3330 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3331 err = -EINVAL;
3332 break;
3333 }
3334 if (ib_wr->send_flags & IB_SEND_FENCE) {
3335 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3336 }
3337 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3338 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3339 (ib_wr->sg_list[0].length <= 64)) {
3340 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3341 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3342 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3343 ib_wr->sg_list[0].length);
3344 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3345 } else {
3346 fill_wqe_sg_send(wqe, ib_wr, 1);
3347 }
3348
3349 break;
3350 case IB_WR_RDMA_WRITE:
3351 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3352 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3353 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3354 ib_wr->num_sge,
3355 nesdev->nesadapter->max_sge);
3356 err = -EINVAL;
3357 break;
3358 }
3359 if (ib_wr->send_flags & IB_SEND_FENCE) {
3360 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3361 }
3362
3363 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3364 ib_wr->wr.rdma.rkey);
3365 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3366 ib_wr->wr.rdma.remote_addr);
3367
3368 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3369 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3370 (ib_wr->sg_list[0].length <= 64)) {
3371 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3372 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3373 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3374 ib_wr->sg_list[0].length);
3375 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3376 } else {
3377 fill_wqe_sg_send(wqe, ib_wr, 1);
3378 }
3379 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3380 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3381 break;
3382 case IB_WR_RDMA_READ:
3383 /* iWARP only supports 1 sge for RDMA reads */
3384 if (ib_wr->num_sge > 1) {
3385 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3386 ib_wr->num_sge);
3387 err = -EINVAL;
3388 break;
3389 }
3390 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3391 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3392 ib_wr->wr.rdma.remote_addr);
3393 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3394 ib_wr->wr.rdma.rkey);
3395 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3396 ib_wr->sg_list->length);
3397 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3398 ib_wr->sg_list->addr);
3399 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3400 ib_wr->sg_list->lkey);
3401 break;
3402 default:
3403 /* error */
3404 err = -EINVAL;
3405 break;
3406 }
3407
3408 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3409 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3410 }
3411 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3412
3413 ib_wr = ib_wr->next;
3414 head++;
3415 wqe_count++;
3416 if (head >= qsize)
3417 head = 0;
3418
3419 }
3420
3421 nesqp->hwqp.sq_head = head;
3422 barrier();
3423 while (wqe_count) {
3424 counter = min(wqe_count, ((u32)255));
3425 wqe_count -= counter;
3426 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3427 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3428 }
3429
3430 spin_unlock_irqrestore(&nesqp->lock, flags);
3431
3432 if (err)
3433 *bad_wr = ib_wr;
3434 return err;
3435 }
3436
3437
3438 /**
3439 * nes_post_recv
3440 */
3441 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3442 struct ib_recv_wr **bad_wr)
3443 {
3444 u64 u64temp;
3445 unsigned long flags = 0;
3446 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3447 struct nes_device *nesdev = nesvnic->nesdev;
3448 struct nes_qp *nesqp = to_nesqp(ibqp);
3449 struct nes_hw_qp_wqe *wqe;
3450 int err = 0;
3451 int sge_index;
3452 u32 qsize = nesqp->hwqp.rq_size;
3453 u32 head;
3454 u32 wqe_count = 0;
3455 u32 counter;
3456 u32 total_payload_length;
3457
3458 if (nesqp->ibqp_state > IB_QPS_RTS)
3459 return -EINVAL;
3460
3461 spin_lock_irqsave(&nesqp->lock, flags);
3462
3463 head = nesqp->hwqp.rq_head;
3464
3465 while (ib_wr) {
3466 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3467 err = -EINVAL;
3468 break;
3469 }
3470 /* Check for RQ overflow */
3471 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3472 err = -EINVAL;
3473 break;
3474 }
3475
3476 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3477 wqe = &nesqp->hwqp.rq_vbase[head];
3478
3479 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3480 nesqp->hwqp.qp_id, wqe, head); */
3481 nes_fill_init_qp_wqe(wqe, nesqp, head);
3482 u64temp = (u64)(ib_wr->wr_id);
3483 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3484 u64temp);
3485 total_payload_length = 0;
3486 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3487 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3488 ib_wr->sg_list[sge_index].addr);
3489 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3490 ib_wr->sg_list[sge_index].length);
3491 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3492 ib_wr->sg_list[sge_index].lkey);
3493
3494 total_payload_length += ib_wr->sg_list[sge_index].length;
3495 }
3496 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3497 total_payload_length);
3498
3499 ib_wr = ib_wr->next;
3500 head++;
3501 wqe_count++;
3502 if (head >= qsize)
3503 head = 0;
3504 }
3505
3506 nesqp->hwqp.rq_head = head;
3507 barrier();
3508 while (wqe_count) {
3509 counter = min(wqe_count, ((u32)255));
3510 wqe_count -= counter;
3511 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3512 }
3513
3514 spin_unlock_irqrestore(&nesqp->lock, flags);
3515
3516 if (err)
3517 *bad_wr = ib_wr;
3518 return err;
3519 }
3520
3521
3522 /**
3523 * nes_poll_cq
3524 */
3525 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3526 {
3527 u64 u64temp;
3528 u64 wrid;
3529 /* u64 u64temp; */
3530 unsigned long flags = 0;
3531 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3532 struct nes_device *nesdev = nesvnic->nesdev;
3533 struct nes_cq *nescq = to_nescq(ibcq);
3534 struct nes_qp *nesqp;
3535 struct nes_hw_cqe cqe;
3536 u32 head;
3537 u32 wq_tail;
3538 u32 cq_size;
3539 u32 cqe_count = 0;
3540 u32 wqe_index;
3541 u32 u32temp;
3542 /* u32 counter; */
3543
3544 nes_debug(NES_DBG_CQ, "\n");
3545
3546 spin_lock_irqsave(&nescq->lock, flags);
3547
3548 head = nescq->hw_cq.cq_head;
3549 cq_size = nescq->hw_cq.cq_size;
3550
3551 while (cqe_count < num_entries) {
3552 if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3553 NES_CQE_VALID) {
3554 /*
3555 * Make sure we read CQ entry contents *after*
3556 * we've checked the valid bit.
3557 */
3558 rmb();
3559
3560 cqe = nescq->hw_cq.cq_vbase[head];
3561 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3562 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3563 wqe_index = u32temp &
3564 (nesdev->nesadapter->max_qp_wr - 1);
3565 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3566 /* parse CQE, get completion context from WQE (either rq or sq */
3567 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3568 ((u64)u32temp);
3569 nesqp = *((struct nes_qp **)&u64temp);
3570 memset(entry, 0, sizeof *entry);
3571 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3572 entry->status = IB_WC_SUCCESS;
3573 } else {
3574 entry->status = IB_WC_WR_FLUSH_ERR;
3575 }
3576
3577 entry->qp = &nesqp->ibqp;
3578 entry->src_qp = nesqp->hwqp.qp_id;
3579
3580 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3581 if (nesqp->skip_lsmm) {
3582 nesqp->skip_lsmm = 0;
3583 wq_tail = nesqp->hwqp.sq_tail++;
3584 }
3585
3586 /* Working on a SQ Completion*/
3587 wq_tail = wqe_index;
3588 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3589 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3590 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3591 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3592 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3593 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3594 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3595
3596 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3597 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3598 case NES_IWARP_SQ_OP_RDMAW:
3599 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3600 entry->opcode = IB_WC_RDMA_WRITE;
3601 break;
3602 case NES_IWARP_SQ_OP_RDMAR:
3603 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3604 entry->opcode = IB_WC_RDMA_READ;
3605 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3606 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3607 break;
3608 case NES_IWARP_SQ_OP_SENDINV:
3609 case NES_IWARP_SQ_OP_SENDSEINV:
3610 case NES_IWARP_SQ_OP_SEND:
3611 case NES_IWARP_SQ_OP_SENDSE:
3612 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3613 entry->opcode = IB_WC_SEND;
3614 break;
3615 }
3616 } else {
3617 /* Working on a RQ Completion*/
3618 wq_tail = wqe_index;
3619 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3620 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3621 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3622 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3623 entry->opcode = IB_WC_RECV;
3624 }
3625 entry->wr_id = wrid;
3626
3627 if (++head >= cq_size)
3628 head = 0;
3629 cqe_count++;
3630 nescq->polled_completions++;
3631 if ((nescq->polled_completions > (cq_size / 2)) ||
3632 (nescq->polled_completions == 255)) {
3633 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3634 " are pending %u of %u.\n",
3635 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3636 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3637 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3638 nescq->polled_completions = 0;
3639 }
3640 entry++;
3641 } else
3642 break;
3643 }
3644
3645 if (nescq->polled_completions) {
3646 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3647 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3648 nescq->polled_completions = 0;
3649 }
3650
3651 nescq->hw_cq.cq_head = head;
3652 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3653 cqe_count, nescq->hw_cq.cq_number);
3654
3655 spin_unlock_irqrestore(&nescq->lock, flags);
3656
3657 return cqe_count;
3658 }
3659
3660
3661 /**
3662 * nes_req_notify_cq
3663 */
3664 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3665 {
3666 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3667 struct nes_device *nesdev = nesvnic->nesdev;
3668 struct nes_cq *nescq = to_nescq(ibcq);
3669 u32 cq_arm;
3670
3671 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3672 nescq->hw_cq.cq_number);
3673
3674 cq_arm = nescq->hw_cq.cq_number;
3675 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3676 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3677 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3678 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3679 else
3680 return -EINVAL;
3681
3682 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3683 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3684
3685 return 0;
3686 }
3687
3688
3689 /**
3690 * nes_init_ofa_device
3691 */
3692 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3693 {
3694 struct nes_ib_device *nesibdev;
3695 struct nes_vnic *nesvnic = netdev_priv(netdev);
3696 struct nes_device *nesdev = nesvnic->nesdev;
3697
3698 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3699 if (nesibdev == NULL) {
3700 return NULL;
3701 }
3702 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3703 nesibdev->ibdev.owner = THIS_MODULE;
3704
3705 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3706 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3707 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3708
3709 nesibdev->ibdev.uverbs_cmd_mask =
3710 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3711 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3712 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3713 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3714 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3715 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3716 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3717 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3718 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3719 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3720 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3721 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3722 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3723 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3724 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3725 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3726 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3727 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3728 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3729 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3730 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3731 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3732
3733 nesibdev->ibdev.phys_port_cnt = 1;
3734 nesibdev->ibdev.num_comp_vectors = 1;
3735 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3736 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3737 nesibdev->ibdev.query_device = nes_query_device;
3738 nesibdev->ibdev.query_port = nes_query_port;
3739 nesibdev->ibdev.modify_port = nes_modify_port;
3740 nesibdev->ibdev.query_pkey = nes_query_pkey;
3741 nesibdev->ibdev.query_gid = nes_query_gid;
3742 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3743 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3744 nesibdev->ibdev.mmap = nes_mmap;
3745 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3746 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3747 nesibdev->ibdev.create_ah = nes_create_ah;
3748 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3749 nesibdev->ibdev.create_qp = nes_create_qp;
3750 nesibdev->ibdev.modify_qp = nes_modify_qp;
3751 nesibdev->ibdev.query_qp = nes_query_qp;
3752 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3753 nesibdev->ibdev.create_cq = nes_create_cq;
3754 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3755 nesibdev->ibdev.poll_cq = nes_poll_cq;
3756 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3757 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3758 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3759 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3760 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3761 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3762 nesibdev->ibdev.bind_mw = nes_bind_mw;
3763
3764 nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3765 nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3766 nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3767 nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3768
3769 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3770 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3771 nesibdev->ibdev.process_mad = nes_process_mad;
3772
3773 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3774 nesibdev->ibdev.post_send = nes_post_send;
3775 nesibdev->ibdev.post_recv = nes_post_recv;
3776
3777 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3778 if (nesibdev->ibdev.iwcm == NULL) {
3779 ib_dealloc_device(&nesibdev->ibdev);
3780 return NULL;
3781 }
3782 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3783 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3784 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3785 nesibdev->ibdev.iwcm->connect = nes_connect;
3786 nesibdev->ibdev.iwcm->accept = nes_accept;
3787 nesibdev->ibdev.iwcm->reject = nes_reject;
3788 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3789 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3790
3791 return nesibdev;
3792 }
3793
3794
3795 /**
3796 * nes_destroy_ofa_device
3797 */
3798 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3799 {
3800 if (nesibdev == NULL)
3801 return;
3802
3803 nes_unregister_ofa_device(nesibdev);
3804
3805 kfree(nesibdev->ibdev.iwcm);
3806 ib_dealloc_device(&nesibdev->ibdev);
3807 }
3808
3809
3810 /**
3811 * nes_register_ofa_device
3812 */
3813 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3814 {
3815 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3816 struct nes_device *nesdev = nesvnic->nesdev;
3817 struct nes_adapter *nesadapter = nesdev->nesadapter;
3818 int i, ret;
3819
3820 ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3821 if (ret) {
3822 return ret;
3823 }
3824
3825 /* Get the resources allocated to this device */
3826 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3827 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3828 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3829 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3830
3831 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3832 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3833 if (ret) {
3834 while (i > 0) {
3835 i--;
3836 device_remove_file(&nesibdev->ibdev.dev,
3837 nes_dev_attributes[i]);
3838 }
3839 ib_unregister_device(&nesibdev->ibdev);
3840 return ret;
3841 }
3842 }
3843
3844 nesvnic->of_device_registered = 1;
3845
3846 return 0;
3847 }
3848
3849
3850 /**
3851 * nes_unregister_ofa_device
3852 */
3853 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3854 {
3855 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3856 int i;
3857
3858 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3859 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3860 }
3861
3862 if (nesvnic->of_device_registered) {
3863 ib_unregister_device(&nesibdev->ibdev);
3864 }
3865
3866 nesvnic->of_device_registered = 0;
3867 }
Linux with added FPC-III support