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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / infiniband / hw / nes / nes_verbs.c
blob9046e6675686c409a0d3035650ce1e8abda8c425
1 /*
2 * Copyright (c) 2006 - 2009 Intel Corporation. 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 <linux/slab.h>
39 #include <asm/byteorder.h>
40
41 #include <rdma/ib_verbs.h>
42 #include <rdma/iw_cm.h>
43 #include <rdma/ib_user_verbs.h>
44
45 #include "nes.h"
46
47 #include <rdma/ib_umem.h>
48
49 atomic_t mod_qp_timouts;
50 atomic_t qps_created;
51 atomic_t sw_qps_destroyed;
52
53 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
54
55 /**
56 * nes_alloc_mw
57 */
58 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
59 struct nes_pd *nespd = to_nespd(ibpd);
60 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
61 struct nes_device *nesdev = nesvnic->nesdev;
62 struct nes_adapter *nesadapter = nesdev->nesadapter;
63 struct nes_cqp_request *cqp_request;
64 struct nes_mr *nesmr;
65 struct ib_mw *ibmw;
66 struct nes_hw_cqp_wqe *cqp_wqe;
67 int ret;
68 u32 stag;
69 u32 stag_index = 0;
70 u32 next_stag_index = 0;
71 u32 driver_key = 0;
72 u8 stag_key = 0;
73
74 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
75 stag_key = (u8)next_stag_index;
76
77 driver_key = 0;
78
79 next_stag_index >>= 8;
80 next_stag_index %= nesadapter->max_mr;
81
82 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
83 nesadapter->max_mr, &stag_index, &next_stag_index);
84 if (ret) {
85 return ERR_PTR(ret);
86 }
87
88 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
89 if (!nesmr) {
90 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
91 return ERR_PTR(-ENOMEM);
92 }
93
94 stag = stag_index << 8;
95 stag |= driver_key;
96 stag += (u32)stag_key;
97
98 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
99 stag, stag_index);
100
101 /* Register the region with the adapter */
102 cqp_request = nes_get_cqp_request(nesdev);
103 if (cqp_request == NULL) {
104 kfree(nesmr);
105 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
106 return ERR_PTR(-ENOMEM);
107 }
108
109 cqp_request->waiting = 1;
110 cqp_wqe = &cqp_request->cqp_wqe;
111
112 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
113 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
114 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
115 NES_CQP_STAG_REM_ACC_EN);
116
117 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
119 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
120
121 atomic_set(&cqp_request->refcount, 2);
122 nes_post_cqp_request(nesdev, cqp_request);
123
124 /* Wait for CQP */
125 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
126 NES_EVENT_TIMEOUT);
127 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
128 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
129 stag, ret, cqp_request->major_code, cqp_request->minor_code);
130 if ((!ret) || (cqp_request->major_code)) {
131 nes_put_cqp_request(nesdev, cqp_request);
132 kfree(nesmr);
133 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
134 if (!ret) {
135 return ERR_PTR(-ETIME);
136 } else {
137 return ERR_PTR(-ENOMEM);
138 }
139 }
140 nes_put_cqp_request(nesdev, cqp_request);
141
142 nesmr->ibmw.rkey = stag;
143 nesmr->mode = IWNES_MEMREG_TYPE_MW;
144 ibmw = &nesmr->ibmw;
145 nesmr->pbl_4k = 0;
146 nesmr->pbls_used = 0;
147
148 return ibmw;
149 }
150
151
152 /**
153 * nes_dealloc_mw
154 */
155 static int nes_dealloc_mw(struct ib_mw *ibmw)
156 {
157 struct nes_mr *nesmr = to_nesmw(ibmw);
158 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
159 struct nes_device *nesdev = nesvnic->nesdev;
160 struct nes_adapter *nesadapter = nesdev->nesadapter;
161 struct nes_hw_cqp_wqe *cqp_wqe;
162 struct nes_cqp_request *cqp_request;
163 int err = 0;
164 int ret;
165
166 /* Deallocate the window with the adapter */
167 cqp_request = nes_get_cqp_request(nesdev);
168 if (cqp_request == NULL) {
169 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
170 return -ENOMEM;
171 }
172 cqp_request->waiting = 1;
173 cqp_wqe = &cqp_request->cqp_wqe;
174 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
176 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
177
178 atomic_set(&cqp_request->refcount, 2);
179 nes_post_cqp_request(nesdev, cqp_request);
180
181 /* Wait for CQP */
182 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
183 ibmw->rkey);
184 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
185 NES_EVENT_TIMEOUT);
186 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
187 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
188 ret, cqp_request->major_code, cqp_request->minor_code);
189 if (!ret)
190 err = -ETIME;
191 else if (cqp_request->major_code)
192 err = -EIO;
193
194 nes_put_cqp_request(nesdev, cqp_request);
195
196 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
197 (ibmw->rkey & 0x0fffff00) >> 8);
198 kfree(nesmr);
199
200 return err;
201 }
202
203
204 /**
205 * nes_bind_mw
206 */
207 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
208 struct ib_mw_bind *ibmw_bind)
209 {
210 u64 u64temp;
211 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
212 struct nes_device *nesdev = nesvnic->nesdev;
213 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
214 struct nes_qp *nesqp = to_nesqp(ibqp);
215 struct nes_hw_qp_wqe *wqe;
216 unsigned long flags = 0;
217 u32 head;
218 u32 wqe_misc = 0;
219 u32 qsize;
220
221 if (nesqp->ibqp_state > IB_QPS_RTS)
222 return -EINVAL;
223
224 spin_lock_irqsave(&nesqp->lock, flags);
225
226 head = nesqp->hwqp.sq_head;
227 qsize = nesqp->hwqp.sq_tail;
228
229 /* Check for SQ overflow */
230 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
231 spin_unlock_irqrestore(&nesqp->lock, flags);
232 return -ENOMEM;
233 }
234
235 wqe = &nesqp->hwqp.sq_vbase[head];
236 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
237 nes_fill_init_qp_wqe(wqe, nesqp, head);
238 u64temp = ibmw_bind->wr_id;
239 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
240 wqe_misc = NES_IWARP_SQ_OP_BIND;
241
242 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
243
244 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
245 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
246
247 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
248 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
249 }
250 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
251 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
252 }
253
254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
258 ibmw_bind->length);
259 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
260 u64temp = (u64)ibmw_bind->addr;
261 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
262
263 head++;
264 if (head >= qsize)
265 head = 0;
266
267 nesqp->hwqp.sq_head = head;
268 barrier();
269
270 nes_write32(nesdev->regs+NES_WQE_ALLOC,
271 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
272
273 spin_unlock_irqrestore(&nesqp->lock, flags);
274
275 return 0;
276 }
277
278
279 /*
280 * nes_alloc_fast_mr
281 */
282 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
283 u32 stag, u32 page_count)
284 {
285 struct nes_hw_cqp_wqe *cqp_wqe;
286 struct nes_cqp_request *cqp_request;
287 unsigned long flags;
288 int ret;
289 struct nes_adapter *nesadapter = nesdev->nesadapter;
290 u32 opcode = 0;
291 u16 major_code;
292 u64 region_length = page_count * PAGE_SIZE;
293
294
295 cqp_request = nes_get_cqp_request(nesdev);
296 if (cqp_request == NULL) {
297 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
298 return -ENOMEM;
299 }
300 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
301 "region_length = %llu\n",
302 page_count, region_length);
303 cqp_request->waiting = 1;
304 cqp_wqe = &cqp_request->cqp_wqe;
305
306 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
307 if (nesadapter->free_4kpbl > 0) {
308 nesadapter->free_4kpbl--;
309 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
310 } else {
311 /* No 4kpbl's available: */
312 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
313 nes_debug(NES_DBG_MR, "Out of Pbls\n");
314 nes_free_cqp_request(nesdev, cqp_request);
315 return -ENOMEM;
316 }
317
318 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
319 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
320 NES_CQP_STAG_REM_ACC_EN;
321 /*
322 * The current OFED API does not support the zero based TO option.
323 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
324 * the API does not support that ability to have the MR set for local
325 * access only when created and not allow the SQ op to override. Given
326 * this the remote enable must be set here.
327 */
328
329 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
330 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
331 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
332
333 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
334 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
335 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
336 cpu_to_le32(nespd->pd_id & 0x00007fff);
337
338 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
339 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
340 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
341 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
342 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
343 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
344 barrier();
345
346 atomic_set(&cqp_request->refcount, 2);
347 nes_post_cqp_request(nesdev, cqp_request);
348
349 /* Wait for CQP */
350 ret = wait_event_timeout(cqp_request->waitq,
351 (0 != cqp_request->request_done),
352 NES_EVENT_TIMEOUT);
353
354 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
355 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
356 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
357 cqp_request->minor_code);
358 major_code = cqp_request->major_code;
359 nes_put_cqp_request(nesdev, cqp_request);
360
361 if (!ret || major_code) {
362 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
363 nesadapter->free_4kpbl++;
364 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
365 }
366
367 if (!ret)
368 return -ETIME;
369 else if (major_code)
370 return -EIO;
371 return 0;
372 }
373
374 /*
375 * nes_alloc_fast_reg_mr
376 */
377 static struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int max_page_list_len)
378 {
379 struct nes_pd *nespd = to_nespd(ibpd);
380 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
381 struct nes_device *nesdev = nesvnic->nesdev;
382 struct nes_adapter *nesadapter = nesdev->nesadapter;
383
384 u32 next_stag_index;
385 u8 stag_key = 0;
386 u32 driver_key = 0;
387 int err = 0;
388 u32 stag_index = 0;
389 struct nes_mr *nesmr;
390 u32 stag;
391 int ret;
392 struct ib_mr *ibmr;
393 /*
394 * Note: Set to always use a fixed length single page entry PBL. This is to allow
395 * for the fast_reg_mr operation to always know the size of the PBL.
396 */
397 if (max_page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
398 return ERR_PTR(-E2BIG);
399
400 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
401 stag_key = (u8)next_stag_index;
402 next_stag_index >>= 8;
403 next_stag_index %= nesadapter->max_mr;
404
405 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
406 nesadapter->max_mr, &stag_index,
407 &next_stag_index);
408 if (err)
409 return ERR_PTR(err);
410
411 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
412 if (!nesmr) {
413 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
414 return ERR_PTR(-ENOMEM);
415 }
416
417 stag = stag_index << 8;
418 stag |= driver_key;
419 stag += (u32)stag_key;
420
421 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
422 stag, stag_index);
423
424 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_page_list_len);
425
426 if (ret == 0) {
427 nesmr->ibmr.rkey = stag;
428 nesmr->ibmr.lkey = stag;
429 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
430 ibmr = &nesmr->ibmr;
431 } else {
432 kfree(nesmr);
433 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
434 ibmr = ERR_PTR(-ENOMEM);
435 }
436 return ibmr;
437 }
438
439 /*
440 * nes_alloc_fast_reg_page_list
441 */
442 static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list(
443 struct ib_device *ibdev,
444 int page_list_len)
445 {
446 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
447 struct nes_device *nesdev = nesvnic->nesdev;
448 struct ib_fast_reg_page_list *pifrpl;
449 struct nes_ib_fast_reg_page_list *pnesfrpl;
450
451 if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
452 return ERR_PTR(-E2BIG);
453 /*
454 * Allocate the ib_fast_reg_page_list structure, the
455 * nes_fast_bpl structure, and the PLB table.
456 */
457 pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) +
458 page_list_len * sizeof(u64), GFP_KERNEL);
459
460 if (!pnesfrpl)
461 return ERR_PTR(-ENOMEM);
462
463 pifrpl = &pnesfrpl->ibfrpl;
464 pifrpl->page_list = &pnesfrpl->pbl;
465 pifrpl->max_page_list_len = page_list_len;
466 /*
467 * Allocate the WQE PBL
468 */
469 pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev,
470 page_list_len * sizeof(u64),
471 &pnesfrpl->nes_wqe_pbl.paddr);
472
473 if (!pnesfrpl->nes_wqe_pbl.kva) {
474 kfree(pnesfrpl);
475 return ERR_PTR(-ENOMEM);
476 }
477 nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, "
478 "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, "
479 "pbl.paddr= %p\n", pnesfrpl, &pnesfrpl->ibfrpl,
480 pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva,
481 (void *)pnesfrpl->nes_wqe_pbl.paddr);
482
483 return pifrpl;
484 }
485
486 /*
487 * nes_free_fast_reg_page_list
488 */
489 static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl)
490 {
491 struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device);
492 struct nes_device *nesdev = nesvnic->nesdev;
493 struct nes_ib_fast_reg_page_list *pnesfrpl;
494
495 pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl);
496 /*
497 * Free the WQE PBL.
498 */
499 pci_free_consistent(nesdev->pcidev,
500 pifrpl->max_page_list_len * sizeof(u64),
501 pnesfrpl->nes_wqe_pbl.kva,
502 pnesfrpl->nes_wqe_pbl.paddr);
503 /*
504 * Free the PBL structure
505 */
506 kfree(pnesfrpl);
507 }
508
509 /**
510 * nes_query_device
511 */
512 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
513 {
514 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
515 struct nes_device *nesdev = nesvnic->nesdev;
516 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
517
518 memset(props, 0, sizeof(*props));
519 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
520
521 props->fw_ver = nesdev->nesadapter->firmware_version;
522 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
523 props->vendor_id = nesdev->nesadapter->vendor_id;
524 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
525 props->hw_ver = nesdev->nesadapter->hw_rev;
526 props->max_mr_size = 0x80000000;
527 props->max_qp = nesibdev->max_qp;
528 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
529 props->max_sge = nesdev->nesadapter->max_sge;
530 props->max_cq = nesibdev->max_cq;
531 props->max_cqe = nesdev->nesadapter->max_cqe;
532 props->max_mr = nesibdev->max_mr;
533 props->max_mw = nesibdev->max_mr;
534 props->max_pd = nesibdev->max_pd;
535 props->max_sge_rd = 1;
536 switch (nesdev->nesadapter->max_irrq_wr) {
537 case 0:
538 props->max_qp_rd_atom = 2;
539 break;
540 case 1:
541 props->max_qp_rd_atom = 8;
542 break;
543 case 2:
544 props->max_qp_rd_atom = 32;
545 break;
546 case 3:
547 props->max_qp_rd_atom = 64;
548 break;
549 default:
550 props->max_qp_rd_atom = 0;
551 }
552 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
553 props->atomic_cap = IB_ATOMIC_NONE;
554 props->max_map_per_fmr = 1;
555
556 return 0;
557 }
558
559
560 /**
561 * nes_query_port
562 */
563 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
564 {
565 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
566 struct net_device *netdev = nesvnic->netdev;
567
568 memset(props, 0, sizeof(*props));
569
570 props->max_mtu = IB_MTU_4096;
571
572 if (netdev->mtu >= 4096)
573 props->active_mtu = IB_MTU_4096;
574 else if (netdev->mtu >= 2048)
575 props->active_mtu = IB_MTU_2048;
576 else if (netdev->mtu >= 1024)
577 props->active_mtu = IB_MTU_1024;
578 else if (netdev->mtu >= 512)
579 props->active_mtu = IB_MTU_512;
580 else
581 props->active_mtu = IB_MTU_256;
582
583 props->lid = 1;
584 props->lmc = 0;
585 props->sm_lid = 0;
586 props->sm_sl = 0;
587 if (nesvnic->linkup)
588 props->state = IB_PORT_ACTIVE;
589 else
590 props->state = IB_PORT_DOWN;
591 props->phys_state = 0;
592 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
593 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
594 props->gid_tbl_len = 1;
595 props->pkey_tbl_len = 1;
596 props->qkey_viol_cntr = 0;
597 props->active_width = IB_WIDTH_4X;
598 props->active_speed = 1;
599 props->max_msg_sz = 0x80000000;
600
601 return 0;
602 }
603
604
605 /**
606 * nes_modify_port
607 */
608 static int nes_modify_port(struct ib_device *ibdev, u8 port,
609 int port_modify_mask, struct ib_port_modify *props)
610 {
611 return 0;
612 }
613
614
615 /**
616 * nes_query_pkey
617 */
618 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
619 {
620 *pkey = 0;
621 return 0;
622 }
623
624
625 /**
626 * nes_query_gid
627 */
628 static int nes_query_gid(struct ib_device *ibdev, u8 port,
629 int index, union ib_gid *gid)
630 {
631 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
632
633 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
634 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
635
636 return 0;
637 }
638
639
640 /**
641 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
642 * of all objects associated with a particular user-mode client.
643 */
644 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
645 struct ib_udata *udata)
646 {
647 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
648 struct nes_device *nesdev = nesvnic->nesdev;
649 struct nes_adapter *nesadapter = nesdev->nesadapter;
650 struct nes_alloc_ucontext_req req;
651 struct nes_alloc_ucontext_resp uresp;
652 struct nes_ucontext *nes_ucontext;
653 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
654
655
656 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
657 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
658 return ERR_PTR(-EINVAL);
659 }
660
661 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
662 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
663 req.userspace_ver, NES_ABI_USERSPACE_VER);
664 return ERR_PTR(-EINVAL);
665 }
666
667
668 memset(&uresp, 0, sizeof uresp);
669
670 uresp.max_qps = nesibdev->max_qp;
671 uresp.max_pds = nesibdev->max_pd;
672 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
673 uresp.virtwq = nesadapter->virtwq;
674 uresp.kernel_ver = NES_ABI_KERNEL_VER;
675
676 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
677 if (!nes_ucontext)
678 return ERR_PTR(-ENOMEM);
679
680 nes_ucontext->nesdev = nesdev;
681 nes_ucontext->mmap_wq_offset = uresp.max_pds;
682 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
683 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
684 PAGE_SIZE;
685
686
687 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
688 kfree(nes_ucontext);
689 return ERR_PTR(-EFAULT);
690 }
691
692 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
693 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
694 atomic_set(&nes_ucontext->usecnt, 1);
695 return &nes_ucontext->ibucontext;
696 }
697
698
699 /**
700 * nes_dealloc_ucontext
701 */
702 static int nes_dealloc_ucontext(struct ib_ucontext *context)
703 {
704 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
705 /* struct nes_device *nesdev = nesvnic->nesdev; */
706 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
707
708 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
709 return 0;
710 kfree(nes_ucontext);
711 return 0;
712 }
713
714
715 /**
716 * nes_mmap
717 */
718 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
719 {
720 unsigned long index;
721 struct nes_vnic *nesvnic = to_nesvnic(context->device);
722 struct nes_device *nesdev = nesvnic->nesdev;
723 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
724 struct nes_ucontext *nes_ucontext;
725 struct nes_qp *nesqp;
726
727 nes_ucontext = to_nesucontext(context);
728
729
730 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
731 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
732 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
733 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
734 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
735 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
736 return -EFAULT;
737 }
738 nesqp = nes_ucontext->mmap_nesqp[index];
739 if (nesqp == NULL) {
740 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
741 return -EFAULT;
742 }
743 if (remap_pfn_range(vma, vma->vm_start,
744 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
745 vma->vm_end - vma->vm_start,
746 vma->vm_page_prot)) {
747 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
748 return -EAGAIN;
749 }
750 vma->vm_private_data = nesqp;
751 return 0;
752 } else {
753 index = vma->vm_pgoff;
754 if (!test_bit(index, nes_ucontext->allocated_doorbells))
755 return -EFAULT;
756
757 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
758 if (io_remap_pfn_range(vma, vma->vm_start,
759 (nesdev->doorbell_start +
760 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
761 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
762 return -EAGAIN;
763 vma->vm_private_data = nes_ucontext;
764 return 0;
765 }
766
767 return -ENOSYS;
768 }
769
770
771 /**
772 * nes_alloc_pd
773 */
774 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
775 struct ib_ucontext *context, struct ib_udata *udata)
776 {
777 struct nes_pd *nespd;
778 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
779 struct nes_device *nesdev = nesvnic->nesdev;
780 struct nes_adapter *nesadapter = nesdev->nesadapter;
781 struct nes_ucontext *nesucontext;
782 struct nes_alloc_pd_resp uresp;
783 u32 pd_num = 0;
784 int err;
785
786 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
787 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
788 atomic_read(&nesvnic->netdev->refcnt));
789
790 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
791 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
792 if (err) {
793 return ERR_PTR(err);
794 }
795
796 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
797 if (!nespd) {
798 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
799 return ERR_PTR(-ENOMEM);
800 }
801
802 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
803 nespd, nesvnic->nesibdev->ibdev.name);
804
805 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
806
807 if (context) {
808 nesucontext = to_nesucontext(context);
809 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
810 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
811 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
812 nespd->mmap_db_index, nespd->pd_id);
813 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
814 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
815 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
816 kfree(nespd);
817 return ERR_PTR(-ENOMEM);
818 }
819
820 uresp.pd_id = nespd->pd_id;
821 uresp.mmap_db_index = nespd->mmap_db_index;
822 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
823 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
824 kfree(nespd);
825 return ERR_PTR(-EFAULT);
826 }
827
828 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
829 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
830 nesucontext->first_free_db = nespd->mmap_db_index + 1;
831 }
832
833 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
834 return &nespd->ibpd;
835 }
836
837
838 /**
839 * nes_dealloc_pd
840 */
841 static int nes_dealloc_pd(struct ib_pd *ibpd)
842 {
843 struct nes_ucontext *nesucontext;
844 struct nes_pd *nespd = to_nespd(ibpd);
845 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
846 struct nes_device *nesdev = nesvnic->nesdev;
847 struct nes_adapter *nesadapter = nesdev->nesadapter;
848
849 if ((ibpd->uobject) && (ibpd->uobject->context)) {
850 nesucontext = to_nesucontext(ibpd->uobject->context);
851 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
852 nespd->mmap_db_index);
853 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
854 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
855 if (nesucontext->first_free_db > nespd->mmap_db_index) {
856 nesucontext->first_free_db = nespd->mmap_db_index;
857 }
858 }
859
860 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
861 nespd->pd_id, nespd);
862 nes_free_resource(nesadapter, nesadapter->allocated_pds,
863 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
864 kfree(nespd);
865
866 return 0;
867 }
868
869
870 /**
871 * nes_create_ah
872 */
873 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
874 {
875 return ERR_PTR(-ENOSYS);
876 }
877
878
879 /**
880 * nes_destroy_ah
881 */
882 static int nes_destroy_ah(struct ib_ah *ah)
883 {
884 return -ENOSYS;
885 }
886
887
888 /**
889 * nes_get_encoded_size
890 */
891 static inline u8 nes_get_encoded_size(int *size)
892 {
893 u8 encoded_size = 0;
894 if (*size <= 32) {
895 *size = 32;
896 encoded_size = 1;
897 } else if (*size <= 128) {
898 *size = 128;
899 encoded_size = 2;
900 } else if (*size <= 512) {
901 *size = 512;
902 encoded_size = 3;
903 }
904 return (encoded_size);
905 }
906
907
908
909 /**
910 * nes_setup_virt_qp
911 */
912 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
913 struct nes_vnic *nesvnic, int sq_size, int rq_size)
914 {
915 unsigned long flags;
916 void *mem;
917 __le64 *pbl = NULL;
918 __le64 *tpbl;
919 __le64 *pblbuffer;
920 struct nes_device *nesdev = nesvnic->nesdev;
921 struct nes_adapter *nesadapter = nesdev->nesadapter;
922 u32 pbl_entries;
923 u8 rq_pbl_entries;
924 u8 sq_pbl_entries;
925
926 pbl_entries = nespbl->pbl_size >> 3;
927 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
928 nespbl->pbl_size, pbl_entries,
929 (void *)nespbl->pbl_vbase,
930 (unsigned long) nespbl->pbl_pbase);
931 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
932 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
933 /* the first pbl to be fro the rq_vbase... */
934 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
935 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
936 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
937 if (!nespbl->page) {
938 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
939 kfree(nespbl);
940 return -ENOMEM;
941 }
942
943 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
944 nesqp->page = nespbl->page;
945 if (!nesqp->hwqp.sq_vbase) {
946 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
947 kfree(nespbl);
948 return -ENOMEM;
949 }
950
951 /* Now to get to sq.. we need to calculate how many */
952 /* PBL entries were used by the rq.. */
953 pbl += sq_pbl_entries;
954 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
955 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
956 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
957
958 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
959 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
960 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
961 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
962 if (!nesadapter->free_256pbl) {
963 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
964 nespbl->pbl_pbase);
965 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
966 kunmap(nesqp->page);
967 kfree(nespbl);
968 return -ENOMEM;
969 }
970 nesadapter->free_256pbl--;
971 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
972
973 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
974 pblbuffer = nesqp->pbl_vbase;
975 if (!nesqp->pbl_vbase) {
976 /* memory allocated during nes_reg_user_mr() */
977 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
978 nespbl->pbl_pbase);
979 kfree(nespbl);
980 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
981 nesadapter->free_256pbl++;
982 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
983 kunmap(nesqp->page);
984 return -ENOMEM;
985 }
986 memset(nesqp->pbl_vbase, 0, 256);
987 /* fill in the page address in the pbl buffer.. */
988 tpbl = pblbuffer + 16;
989 pbl = (__le64 *)nespbl->pbl_vbase;
990 while (sq_pbl_entries--)
991 *tpbl++ = *pbl++;
992 tpbl = pblbuffer;
993 while (rq_pbl_entries--)
994 *tpbl++ = *pbl++;
995
996 /* done with memory allocated during nes_reg_user_mr() */
997 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
998 nespbl->pbl_pbase);
999 kfree(nespbl);
1000
1001 nesqp->qp_mem_size =
1002 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1003 /* Round up to a multiple of a page */
1004 nesqp->qp_mem_size += PAGE_SIZE - 1;
1005 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1006
1007 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1008 &nesqp->hwqp.q2_pbase);
1009
1010 if (!mem) {
1011 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1012 nesqp->pbl_vbase = NULL;
1013 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1014 nesadapter->free_256pbl++;
1015 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1016 kunmap(nesqp->page);
1017 return -ENOMEM;
1018 }
1019 nesqp->sq_kmapped = 1;
1020 nesqp->hwqp.q2_vbase = mem;
1021 mem += 256;
1022 memset(nesqp->hwqp.q2_vbase, 0, 256);
1023 nesqp->nesqp_context = mem;
1024 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1025 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1026
1027 return 0;
1028 }
1029
1030
1031 /**
1032 * nes_setup_mmap_qp
1033 */
1034 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1035 int sq_size, int rq_size)
1036 {
1037 void *mem;
1038 struct nes_device *nesdev = nesvnic->nesdev;
1039
1040 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1041 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1042 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1043 256; /* this is Q2 */
1044 /* Round up to a multiple of a page */
1045 nesqp->qp_mem_size += PAGE_SIZE - 1;
1046 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1047
1048 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1049 &nesqp->hwqp.sq_pbase);
1050 if (!mem)
1051 return -ENOMEM;
1052 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1053 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1054 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1055
1056 memset(mem, 0, nesqp->qp_mem_size);
1057
1058 nesqp->hwqp.sq_vbase = mem;
1059 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1060
1061 nesqp->hwqp.rq_vbase = mem;
1062 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1063 sizeof(struct nes_hw_qp_wqe) * sq_size;
1064 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1065
1066 nesqp->hwqp.q2_vbase = mem;
1067 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1068 sizeof(struct nes_hw_qp_wqe) * rq_size;
1069 mem += 256;
1070 memset(nesqp->hwqp.q2_vbase, 0, 256);
1071
1072 nesqp->nesqp_context = mem;
1073 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1074 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1075 return 0;
1076 }
1077
1078
1079 /**
1080 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1081 */
1082 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1083 struct nes_qp *nesqp, int virt_wqs)
1084 {
1085 unsigned long flags;
1086 struct nes_adapter *nesadapter = nesdev->nesadapter;
1087 if (!virt_wqs) {
1088 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1089 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1090 }else {
1091 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1092 nesadapter->free_256pbl++;
1093 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1094 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1095 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1096 nesqp->pbl_vbase = NULL;
1097 if (nesqp->sq_kmapped) {
1098 nesqp->sq_kmapped = 0;
1099 kunmap(nesqp->page);
1100 }
1101 }
1102 }
1103
1104
1105 /**
1106 * nes_create_qp
1107 */
1108 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1109 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1110 {
1111 u64 u64temp= 0;
1112 u64 u64nesqp = 0;
1113 struct nes_pd *nespd = to_nespd(ibpd);
1114 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1115 struct nes_device *nesdev = nesvnic->nesdev;
1116 struct nes_adapter *nesadapter = nesdev->nesadapter;
1117 struct nes_qp *nesqp;
1118 struct nes_cq *nescq;
1119 struct nes_ucontext *nes_ucontext;
1120 struct nes_hw_cqp_wqe *cqp_wqe;
1121 struct nes_cqp_request *cqp_request;
1122 struct nes_create_qp_req req;
1123 struct nes_create_qp_resp uresp;
1124 struct nes_pbl *nespbl = NULL;
1125 u32 qp_num = 0;
1126 u32 opcode = 0;
1127 /* u32 counter = 0; */
1128 void *mem;
1129 unsigned long flags;
1130 int ret;
1131 int err;
1132 int virt_wqs = 0;
1133 int sq_size;
1134 int rq_size;
1135 u8 sq_encoded_size;
1136 u8 rq_encoded_size;
1137 /* int counter; */
1138
1139 if (init_attr->create_flags)
1140 return ERR_PTR(-EINVAL);
1141
1142 atomic_inc(&qps_created);
1143 switch (init_attr->qp_type) {
1144 case IB_QPT_RC:
1145 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1146 init_attr->cap.max_inline_data = 0;
1147 } else {
1148 init_attr->cap.max_inline_data = 64;
1149 }
1150 sq_size = init_attr->cap.max_send_wr;
1151 rq_size = init_attr->cap.max_recv_wr;
1152
1153 /* check if the encoded sizes are OK or not... */
1154 sq_encoded_size = nes_get_encoded_size(&sq_size);
1155 rq_encoded_size = nes_get_encoded_size(&rq_size);
1156
1157 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1158 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1159 rq_size, sq_size);
1160 return ERR_PTR(-EINVAL);
1161 }
1162
1163 init_attr->cap.max_send_wr = sq_size -2;
1164 init_attr->cap.max_recv_wr = rq_size -1;
1165 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1166
1167 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1168 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1169 if (ret) {
1170 return ERR_PTR(ret);
1171 }
1172
1173 /* Need 512 (actually now 1024) byte alignment on this structure */
1174 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1175 if (!mem) {
1176 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1177 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1178 return ERR_PTR(-ENOMEM);
1179 }
1180 u64nesqp = (unsigned long)mem;
1181 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1182 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1183 u64nesqp &= ~u64temp;
1184 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1185 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1186 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1187 nesqp->allocated_buffer = mem;
1188
1189 if (udata) {
1190 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1191 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1192 kfree(nesqp->allocated_buffer);
1193 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1194 return NULL;
1195 }
1196 if (req.user_wqe_buffers) {
1197 virt_wqs = 1;
1198 }
1199 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1200 nesqp->user_mode = 1;
1201 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1202 if (virt_wqs) {
1203 err = 1;
1204 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1205 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1206 list_del(&nespbl->list);
1207 err = 0;
1208 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1209 nespbl, nespbl->user_base);
1210 break;
1211 }
1212 }
1213 if (err) {
1214 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1215 (long long unsigned int)req.user_wqe_buffers);
1216 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1217 kfree(nesqp->allocated_buffer);
1218 return ERR_PTR(-EFAULT);
1219 }
1220 }
1221
1222 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1223 nesqp->mmap_sq_db_index =
1224 find_next_zero_bit(nes_ucontext->allocated_wqs,
1225 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1226 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1227 nespd->mmap_db_index); */
1228 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1229 nes_debug(NES_DBG_QP,
1230 "db index > max user regions, failing create QP\n");
1231 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1232 if (virt_wqs) {
1233 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1234 nespbl->pbl_pbase);
1235 kfree(nespbl);
1236 }
1237 kfree(nesqp->allocated_buffer);
1238 return ERR_PTR(-ENOMEM);
1239 }
1240 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1241 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1242 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1243 } else {
1244 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1245 kfree(nesqp->allocated_buffer);
1246 return ERR_PTR(-EFAULT);
1247 }
1248 }
1249 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1250 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1251 if (err) {
1252 nes_debug(NES_DBG_QP,
1253 "error geting qp mem code = %d\n", err);
1254 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1255 kfree(nesqp->allocated_buffer);
1256 return ERR_PTR(-ENOMEM);
1257 }
1258
1259 nesqp->hwqp.sq_size = sq_size;
1260 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1261 nesqp->hwqp.sq_head = 1;
1262 nesqp->hwqp.rq_size = rq_size;
1263 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1264 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1265 (void *)nesqp->nesqp_context_pbase);
1266 */
1267 nesqp->hwqp.qp_id = qp_num;
1268 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1269 nesqp->nespd = nespd;
1270
1271 nescq = to_nescq(init_attr->send_cq);
1272 nesqp->nesscq = nescq;
1273 nescq = to_nescq(init_attr->recv_cq);
1274 nesqp->nesrcq = nescq;
1275
1276 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1277 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1278 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1279 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1280 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1281 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1282 if (!udata) {
1283 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1284 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1285 }
1286 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1287 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1288 u64temp = (u64)nesqp->hwqp.sq_pbase;
1289 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1290 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1291
1292
1293 if (!virt_wqs) {
1294 u64temp = (u64)nesqp->hwqp.sq_pbase;
1295 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1296 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1297 u64temp = (u64)nesqp->hwqp.rq_pbase;
1298 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1299 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1300 } else {
1301 u64temp = (u64)nesqp->pbl_pbase;
1302 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1303 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1304 }
1305
1306 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1307 nesvnic->next_qp_nic_index,
1308 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1309 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1310 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1311 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1312 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1313 nesvnic->next_qp_nic_index++;
1314 if ((nesvnic->next_qp_nic_index > 3) ||
1315 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1316 nesvnic->next_qp_nic_index = 0;
1317 }
1318 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1319
1320 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1321 u64temp = (u64)nesqp->hwqp.q2_pbase;
1322 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1323 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1324 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1325 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1326 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1327 NES_QPCONTEXT_ORDIRD_AAH |
1328 ((((u32)nesadapter->max_irrq_wr) <<
1329 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1330 if (disable_mpa_crc) {
1331 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1332 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1333 }
1334
1335
1336 /* Create the QP */
1337 cqp_request = nes_get_cqp_request(nesdev);
1338 if (cqp_request == NULL) {
1339 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1340 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1341 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1342 kfree(nesqp->allocated_buffer);
1343 return ERR_PTR(-ENOMEM);
1344 }
1345 cqp_request->waiting = 1;
1346 cqp_wqe = &cqp_request->cqp_wqe;
1347
1348 if (!virt_wqs) {
1349 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1350 NES_CQP_QP_IWARP_STATE_IDLE;
1351 } else {
1352 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1353 NES_CQP_QP_IWARP_STATE_IDLE;
1354 }
1355 opcode |= NES_CQP_QP_CQS_VALID;
1356 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1357 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1358 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1359
1360 u64temp = (u64)nesqp->nesqp_context_pbase;
1361 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1362
1363 atomic_set(&cqp_request->refcount, 2);
1364 nes_post_cqp_request(nesdev, cqp_request);
1365
1366 /* Wait for CQP */
1367 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1368 nesqp->hwqp.qp_id);
1369 ret = wait_event_timeout(cqp_request->waitq,
1370 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1371 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1372 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1373 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1374 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1375 cqp_request->major_code, cqp_request->minor_code);
1376 if ((!ret) || (cqp_request->major_code)) {
1377 nes_put_cqp_request(nesdev, cqp_request);
1378 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1379 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1380 kfree(nesqp->allocated_buffer);
1381 if (!ret) {
1382 return ERR_PTR(-ETIME);
1383 } else {
1384 return ERR_PTR(-EIO);
1385 }
1386 }
1387
1388 nes_put_cqp_request(nesdev, cqp_request);
1389
1390 if (ibpd->uobject) {
1391 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1392 uresp.actual_sq_size = sq_size;
1393 uresp.actual_rq_size = rq_size;
1394 uresp.qp_id = nesqp->hwqp.qp_id;
1395 uresp.nes_drv_opt = nes_drv_opt;
1396 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1397 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1398 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1399 kfree(nesqp->allocated_buffer);
1400 return ERR_PTR(-EFAULT);
1401 }
1402 }
1403
1404 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1405 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1406 spin_lock_init(&nesqp->lock);
1407 nes_add_ref(&nesqp->ibqp);
1408 break;
1409 default:
1410 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1411 return ERR_PTR(-EINVAL);
1412 }
1413
1414 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1415
1416 /* update the QP table */
1417 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1418 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1419 atomic_read(&nesvnic->netdev->refcnt));
1420
1421 return &nesqp->ibqp;
1422 }
1423
1424
1425 /**
1426 * nes_clean_cq
1427 */
1428 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1429 {
1430 u32 cq_head;
1431 u32 lo;
1432 u32 hi;
1433 u64 u64temp;
1434 unsigned long flags = 0;
1435
1436 spin_lock_irqsave(&nescq->lock, flags);
1437
1438 cq_head = nescq->hw_cq.cq_head;
1439 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1440 rmb();
1441 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1442 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1443 u64temp = (((u64)hi) << 32) | ((u64)lo);
1444 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1445 if (u64temp == (u64)(unsigned long)nesqp) {
1446 /* Zero the context value so cqe will be ignored */
1447 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1448 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1449 }
1450
1451 if (++cq_head >= nescq->hw_cq.cq_size)
1452 cq_head = 0;
1453 }
1454
1455 spin_unlock_irqrestore(&nescq->lock, flags);
1456 }
1457
1458
1459 /**
1460 * nes_destroy_qp
1461 */
1462 static int nes_destroy_qp(struct ib_qp *ibqp)
1463 {
1464 struct nes_qp *nesqp = to_nesqp(ibqp);
1465 struct nes_ucontext *nes_ucontext;
1466 struct ib_qp_attr attr;
1467 struct iw_cm_id *cm_id;
1468 struct iw_cm_event cm_event;
1469 int ret;
1470
1471 atomic_inc(&sw_qps_destroyed);
1472 nesqp->destroyed = 1;
1473
1474 /* Blow away the connection if it exists. */
1475 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1476 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1477 attr.qp_state = IB_QPS_ERR;
1478 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1479 }
1480
1481 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1482 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1483 cm_id = nesqp->cm_id;
1484 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1485 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1486 cm_event.local_addr = cm_id->local_addr;
1487 cm_event.remote_addr = cm_id->remote_addr;
1488 cm_event.private_data = NULL;
1489 cm_event.private_data_len = 0;
1490
1491 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1492 "QP%u. cm_id = %p, refcount = %u. \n",
1493 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1494
1495 cm_id->rem_ref(cm_id);
1496 ret = cm_id->event_handler(cm_id, &cm_event);
1497 if (ret)
1498 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1499 }
1500
1501 if (nesqp->user_mode) {
1502 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1503 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1504 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1505 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1506 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1507 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1508 }
1509 }
1510 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1511 nesqp->sq_kmapped = 0;
1512 kunmap(nesqp->page);
1513 }
1514 } else {
1515 /* Clean any pending completions from the cq(s) */
1516 if (nesqp->nesscq)
1517 nes_clean_cq(nesqp, nesqp->nesscq);
1518
1519 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1520 nes_clean_cq(nesqp, nesqp->nesrcq);
1521 }
1522
1523 nes_rem_ref(&nesqp->ibqp);
1524 return 0;
1525 }
1526
1527
1528 /**
1529 * nes_create_cq
1530 */
1531 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1532 int comp_vector,
1533 struct ib_ucontext *context, struct ib_udata *udata)
1534 {
1535 u64 u64temp;
1536 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1537 struct nes_device *nesdev = nesvnic->nesdev;
1538 struct nes_adapter *nesadapter = nesdev->nesadapter;
1539 struct nes_cq *nescq;
1540 struct nes_ucontext *nes_ucontext = NULL;
1541 struct nes_cqp_request *cqp_request;
1542 void *mem = NULL;
1543 struct nes_hw_cqp_wqe *cqp_wqe;
1544 struct nes_pbl *nespbl = NULL;
1545 struct nes_create_cq_req req;
1546 struct nes_create_cq_resp resp;
1547 u32 cq_num = 0;
1548 u32 opcode = 0;
1549 u32 pbl_entries = 1;
1550 int err;
1551 unsigned long flags;
1552 int ret;
1553
1554 if (entries > nesadapter->max_cqe)
1555 return ERR_PTR(-EINVAL);
1556
1557 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1558 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1559 if (err) {
1560 return ERR_PTR(err);
1561 }
1562
1563 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1564 if (!nescq) {
1565 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1566 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1567 return ERR_PTR(-ENOMEM);
1568 }
1569
1570 nescq->hw_cq.cq_size = max(entries + 1, 5);
1571 nescq->hw_cq.cq_number = cq_num;
1572 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1573
1574
1575 if (context) {
1576 nes_ucontext = to_nesucontext(context);
1577 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1578 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1579 kfree(nescq);
1580 return ERR_PTR(-EFAULT);
1581 }
1582 nesvnic->mcrq_ucontext = nes_ucontext;
1583 nes_ucontext->mcrqf = req.mcrqf;
1584 if (nes_ucontext->mcrqf) {
1585 if (nes_ucontext->mcrqf & 0x80000000)
1586 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1587 else if (nes_ucontext->mcrqf & 0x40000000)
1588 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1589 else
1590 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1591 nescq->mcrqf = nes_ucontext->mcrqf;
1592 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1593 }
1594 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1595 (unsigned long)req.user_cq_buffer, entries);
1596 err = 1;
1597 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1598 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1599 list_del(&nespbl->list);
1600 err = 0;
1601 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1602 nespbl);
1603 break;
1604 }
1605 }
1606 if (err) {
1607 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1608 kfree(nescq);
1609 return ERR_PTR(-EFAULT);
1610 }
1611
1612 pbl_entries = nespbl->pbl_size >> 3;
1613 nescq->cq_mem_size = 0;
1614 } else {
1615 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1616 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1617 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1618
1619 /* allocate the physical buffer space */
1620 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1621 &nescq->hw_cq.cq_pbase);
1622 if (!mem) {
1623 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1624 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1625 kfree(nescq);
1626 return ERR_PTR(-ENOMEM);
1627 }
1628
1629 memset(mem, 0, nescq->cq_mem_size);
1630 nescq->hw_cq.cq_vbase = mem;
1631 nescq->hw_cq.cq_head = 0;
1632 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1633 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1634 (u32)nescq->hw_cq.cq_pbase);
1635 }
1636
1637 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1638 spin_lock_init(&nescq->lock);
1639
1640 /* send CreateCQ request to CQP */
1641 cqp_request = nes_get_cqp_request(nesdev);
1642 if (cqp_request == NULL) {
1643 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1644 if (!context)
1645 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1646 nescq->hw_cq.cq_pbase);
1647 else {
1648 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1649 nespbl->pbl_vbase, nespbl->pbl_pbase);
1650 kfree(nespbl);
1651 }
1652
1653 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1654 kfree(nescq);
1655 return ERR_PTR(-ENOMEM);
1656 }
1657 cqp_request->waiting = 1;
1658 cqp_wqe = &cqp_request->cqp_wqe;
1659
1660 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1661 NES_CQP_CQ_CHK_OVERFLOW |
1662 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1663
1664 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1665
1666 if (pbl_entries != 1) {
1667 if (pbl_entries > 32) {
1668 /* use 4k pbl */
1669 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1670 if (nesadapter->free_4kpbl == 0) {
1671 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1672 nes_free_cqp_request(nesdev, cqp_request);
1673 if (!context)
1674 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1675 nescq->hw_cq.cq_pbase);
1676 else {
1677 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1678 nespbl->pbl_vbase, nespbl->pbl_pbase);
1679 kfree(nespbl);
1680 }
1681 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1682 kfree(nescq);
1683 return ERR_PTR(-ENOMEM);
1684 } else {
1685 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1686 nescq->virtual_cq = 2;
1687 nesadapter->free_4kpbl--;
1688 }
1689 } else {
1690 /* use 256 byte pbl */
1691 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1692 if (nesadapter->free_256pbl == 0) {
1693 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1694 nes_free_cqp_request(nesdev, cqp_request);
1695 if (!context)
1696 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1697 nescq->hw_cq.cq_pbase);
1698 else {
1699 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1700 nespbl->pbl_vbase, nespbl->pbl_pbase);
1701 kfree(nespbl);
1702 }
1703 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1704 kfree(nescq);
1705 return ERR_PTR(-ENOMEM);
1706 } else {
1707 opcode |= NES_CQP_CQ_VIRT;
1708 nescq->virtual_cq = 1;
1709 nesadapter->free_256pbl--;
1710 }
1711 }
1712 }
1713
1714 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1715
1716 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1717 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1718 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1719 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1720
1721 if (context) {
1722 if (pbl_entries != 1)
1723 u64temp = (u64)nespbl->pbl_pbase;
1724 else
1725 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1726 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1727 nes_ucontext->mmap_db_index[0]);
1728 } else {
1729 u64temp = (u64)nescq->hw_cq.cq_pbase;
1730 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1731 }
1732 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1733 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1734 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1735 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1736 cpu_to_le32((u32)(u64temp >> 1));
1737 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1738 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1739
1740 atomic_set(&cqp_request->refcount, 2);
1741 nes_post_cqp_request(nesdev, cqp_request);
1742
1743 /* Wait for CQP */
1744 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1745 nescq->hw_cq.cq_number);
1746 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1747 NES_EVENT_TIMEOUT * 2);
1748 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1749 nescq->hw_cq.cq_number, ret);
1750 if ((!ret) || (cqp_request->major_code)) {
1751 nes_put_cqp_request(nesdev, cqp_request);
1752 if (!context)
1753 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1754 nescq->hw_cq.cq_pbase);
1755 else {
1756 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1757 nespbl->pbl_vbase, nespbl->pbl_pbase);
1758 kfree(nespbl);
1759 }
1760 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1761 kfree(nescq);
1762 return ERR_PTR(-EIO);
1763 }
1764 nes_put_cqp_request(nesdev, cqp_request);
1765
1766 if (context) {
1767 /* free the nespbl */
1768 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1769 nespbl->pbl_pbase);
1770 kfree(nespbl);
1771 resp.cq_id = nescq->hw_cq.cq_number;
1772 resp.cq_size = nescq->hw_cq.cq_size;
1773 resp.mmap_db_index = 0;
1774 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1775 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1776 kfree(nescq);
1777 return ERR_PTR(-EFAULT);
1778 }
1779 }
1780
1781 return &nescq->ibcq;
1782 }
1783
1784
1785 /**
1786 * nes_destroy_cq
1787 */
1788 static int nes_destroy_cq(struct ib_cq *ib_cq)
1789 {
1790 struct nes_cq *nescq;
1791 struct nes_device *nesdev;
1792 struct nes_vnic *nesvnic;
1793 struct nes_adapter *nesadapter;
1794 struct nes_hw_cqp_wqe *cqp_wqe;
1795 struct nes_cqp_request *cqp_request;
1796 unsigned long flags;
1797 u32 opcode = 0;
1798 int ret;
1799
1800 if (ib_cq == NULL)
1801 return 0;
1802
1803 nescq = to_nescq(ib_cq);
1804 nesvnic = to_nesvnic(ib_cq->device);
1805 nesdev = nesvnic->nesdev;
1806 nesadapter = nesdev->nesadapter;
1807
1808 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1809
1810 /* Send DestroyCQ request to CQP */
1811 cqp_request = nes_get_cqp_request(nesdev);
1812 if (cqp_request == NULL) {
1813 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1814 return -ENOMEM;
1815 }
1816 cqp_request->waiting = 1;
1817 cqp_wqe = &cqp_request->cqp_wqe;
1818 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1819 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1820 if (nescq->virtual_cq == 1) {
1821 nesadapter->free_256pbl++;
1822 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1823 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1824 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1825 }
1826 } else if (nescq->virtual_cq == 2) {
1827 nesadapter->free_4kpbl++;
1828 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1829 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1830 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1831 }
1832 opcode |= NES_CQP_CQ_4KB_CHUNK;
1833 }
1834
1835 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1836
1837 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1838 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1839 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1840 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1841 if (!nescq->mcrqf)
1842 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1843
1844 atomic_set(&cqp_request->refcount, 2);
1845 nes_post_cqp_request(nesdev, cqp_request);
1846
1847 /* Wait for CQP */
1848 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1849 nescq->hw_cq.cq_number);
1850 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1851 NES_EVENT_TIMEOUT);
1852 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1853 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1854 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1855 cqp_request->minor_code);
1856 if (!ret) {
1857 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1858 nescq->hw_cq.cq_number);
1859 ret = -ETIME;
1860 } else if (cqp_request->major_code) {
1861 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1862 nescq->hw_cq.cq_number);
1863 ret = -EIO;
1864 } else {
1865 ret = 0;
1866 }
1867 nes_put_cqp_request(nesdev, cqp_request);
1868
1869 if (nescq->cq_mem_size)
1870 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1871 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1872 kfree(nescq);
1873
1874 return ret;
1875 }
1876
1877 /**
1878 * root_256
1879 */
1880 static u32 root_256(struct nes_device *nesdev,
1881 struct nes_root_vpbl *root_vpbl,
1882 struct nes_root_vpbl *new_root,
1883 u16 pbl_count_4k)
1884 {
1885 u64 leaf_pbl;
1886 int i, j, k;
1887
1888 if (pbl_count_4k == 1) {
1889 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1890 512, &new_root->pbl_pbase);
1891
1892 if (new_root->pbl_vbase == NULL)
1893 return 0;
1894
1895 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1896 for (i = 0; i < 16; i++) {
1897 new_root->pbl_vbase[i].pa_low =
1898 cpu_to_le32((u32)leaf_pbl);
1899 new_root->pbl_vbase[i].pa_high =
1900 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1901 leaf_pbl += 256;
1902 }
1903 } else {
1904 for (i = 3; i >= 0; i--) {
1905 j = i * 16;
1906 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1907 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1908 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1909 << 32);
1910 for (k = 1; k < 16; k++) {
1911 leaf_pbl += 256;
1912 root_vpbl->pbl_vbase[j + k].pa_low =
1913 cpu_to_le32((u32)leaf_pbl);
1914 root_vpbl->pbl_vbase[j + k].pa_high =
1915 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1916 }
1917 }
1918 }
1919
1920 return 1;
1921 }
1922
1923
1924 /**
1925 * nes_reg_mr
1926 */
1927 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1928 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1929 dma_addr_t single_buffer, u16 pbl_count_4k,
1930 u16 residual_page_count_4k, int acc, u64 *iova_start,
1931 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1932 {
1933 struct nes_hw_cqp_wqe *cqp_wqe;
1934 struct nes_cqp_request *cqp_request;
1935 unsigned long flags;
1936 int ret;
1937 struct nes_adapter *nesadapter = nesdev->nesadapter;
1938 uint pg_cnt = 0;
1939 u16 pbl_count_256 = 0;
1940 u16 pbl_count = 0;
1941 u8 use_256_pbls = 0;
1942 u8 use_4k_pbls = 0;
1943 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1944 struct nes_root_vpbl new_root = { 0, NULL, NULL };
1945 u32 opcode = 0;
1946 u16 major_code;
1947
1948 /* Register the region with the adapter */
1949 cqp_request = nes_get_cqp_request(nesdev);
1950 if (cqp_request == NULL) {
1951 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1952 return -ENOMEM;
1953 }
1954 cqp_request->waiting = 1;
1955 cqp_wqe = &cqp_request->cqp_wqe;
1956
1957 if (pbl_count_4k) {
1958 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1959
1960 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1961 pbl_count_256 = (pg_cnt + 31) / 32;
1962 if (pg_cnt <= 32) {
1963 if (pbl_count_256 <= nesadapter->free_256pbl)
1964 use_256_pbls = 1;
1965 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1966 use_4k_pbls = 1;
1967 } else if (pg_cnt <= 2048) {
1968 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1969 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1970 use_4k_pbls = 1;
1971 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1972 use_256_pbls = 1;
1973 use_two_level = 1;
1974 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1975 use_4k_pbls = 1;
1976 }
1977 } else {
1978 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1979 use_4k_pbls = 1;
1980 }
1981
1982 if (use_256_pbls) {
1983 pbl_count = pbl_count_256;
1984 nesadapter->free_256pbl -= pbl_count + use_two_level;
1985 } else if (use_4k_pbls) {
1986 pbl_count = pbl_count_4k;
1987 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1988 } else {
1989 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1990 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1991 nes_free_cqp_request(nesdev, cqp_request);
1992 return -ENOMEM;
1993 }
1994
1995 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1996 }
1997
1998 if (use_256_pbls && use_two_level) {
1999 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
2000 if (new_root.pbl_pbase != 0)
2001 root_vpbl = &new_root;
2002 } else {
2003 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2004 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2005 use_256_pbls = 0;
2006
2007 if (pbl_count_4k == 1)
2008 use_two_level = 0;
2009 pbl_count = pbl_count_4k;
2010
2011 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2012 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2013 use_4k_pbls = 1;
2014 }
2015 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2016
2017 if (use_4k_pbls == 0)
2018 return -ENOMEM;
2019 }
2020 }
2021
2022 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2023 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2024 if (acc & IB_ACCESS_LOCAL_WRITE)
2025 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2026 if (acc & IB_ACCESS_REMOTE_WRITE)
2027 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2028 if (acc & IB_ACCESS_REMOTE_READ)
2029 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2030 if (acc & IB_ACCESS_MW_BIND)
2031 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2032
2033 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2034 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2035 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2036 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2037
2038 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2039 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2040 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2041 cpu_to_le32(nespd->pd_id & 0x00007fff);
2042 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2043
2044 if (pbl_count == 0) {
2045 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2046 } else {
2047 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2048 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2049 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2050
2051 if (use_4k_pbls)
2052 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2053 }
2054 barrier();
2055
2056 atomic_set(&cqp_request->refcount, 2);
2057 nes_post_cqp_request(nesdev, cqp_request);
2058
2059 /* Wait for CQP */
2060 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2061 NES_EVENT_TIMEOUT);
2062 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2063 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2064 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2065 major_code = cqp_request->major_code;
2066 nes_put_cqp_request(nesdev, cqp_request);
2067
2068 if ((!ret || major_code) && pbl_count != 0) {
2069 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2070 if (use_256_pbls)
2071 nesadapter->free_256pbl += pbl_count + use_two_level;
2072 else if (use_4k_pbls)
2073 nesadapter->free_4kpbl += pbl_count + use_two_level;
2074 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2075 }
2076 if (new_root.pbl_pbase)
2077 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2078 new_root.pbl_pbase);
2079
2080 if (!ret)
2081 return -ETIME;
2082 else if (major_code)
2083 return -EIO;
2084
2085 *actual_pbl_cnt = pbl_count + use_two_level;
2086 *used_4k_pbls = use_4k_pbls;
2087 return 0;
2088 }
2089
2090
2091 /**
2092 * nes_reg_phys_mr
2093 */
2094 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2095 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2096 u64 * iova_start)
2097 {
2098 u64 region_length;
2099 struct nes_pd *nespd = to_nespd(ib_pd);
2100 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2101 struct nes_device *nesdev = nesvnic->nesdev;
2102 struct nes_adapter *nesadapter = nesdev->nesadapter;
2103 struct nes_mr *nesmr;
2104 struct ib_mr *ibmr;
2105 struct nes_vpbl vpbl;
2106 struct nes_root_vpbl root_vpbl;
2107 u32 stag;
2108 u32 i;
2109 unsigned long mask;
2110 u32 stag_index = 0;
2111 u32 next_stag_index = 0;
2112 u32 driver_key = 0;
2113 u32 root_pbl_index = 0;
2114 u32 cur_pbl_index = 0;
2115 int err = 0;
2116 int ret = 0;
2117 u16 pbl_count = 0;
2118 u8 single_page = 1;
2119 u8 stag_key = 0;
2120
2121 region_length = 0;
2122 vpbl.pbl_vbase = NULL;
2123 root_vpbl.pbl_vbase = NULL;
2124 root_vpbl.pbl_pbase = 0;
2125
2126 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2127 stag_key = (u8)next_stag_index;
2128
2129 driver_key = 0;
2130
2131 next_stag_index >>= 8;
2132 next_stag_index %= nesadapter->max_mr;
2133 if (num_phys_buf > (1024*512)) {
2134 return ERR_PTR(-E2BIG);
2135 }
2136
2137 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2138 return ERR_PTR(-EINVAL);
2139
2140 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2141 &stag_index, &next_stag_index);
2142 if (err) {
2143 return ERR_PTR(err);
2144 }
2145
2146 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2147 if (!nesmr) {
2148 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2149 return ERR_PTR(-ENOMEM);
2150 }
2151
2152 for (i = 0; i < num_phys_buf; i++) {
2153
2154 if ((i & 0x01FF) == 0) {
2155 if (root_pbl_index == 1) {
2156 /* Allocate the root PBL */
2157 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2158 &root_vpbl.pbl_pbase);
2159 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2160 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2161 if (!root_vpbl.pbl_vbase) {
2162 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2163 vpbl.pbl_pbase);
2164 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2165 kfree(nesmr);
2166 return ERR_PTR(-ENOMEM);
2167 }
2168 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2169 if (!root_vpbl.leaf_vpbl) {
2170 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2171 root_vpbl.pbl_pbase);
2172 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2173 vpbl.pbl_pbase);
2174 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2175 kfree(nesmr);
2176 return ERR_PTR(-ENOMEM);
2177 }
2178 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2179 root_vpbl.pbl_vbase[0].pa_high =
2180 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2181 root_vpbl.leaf_vpbl[0] = vpbl;
2182 }
2183 /* Allocate a 4K buffer for the PBL */
2184 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2185 &vpbl.pbl_pbase);
2186 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2187 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2188 if (!vpbl.pbl_vbase) {
2189 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2190 ibmr = ERR_PTR(-ENOMEM);
2191 kfree(nesmr);
2192 goto reg_phys_err;
2193 }
2194 /* Fill in the root table */
2195 if (1 <= root_pbl_index) {
2196 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2197 cpu_to_le32((u32)vpbl.pbl_pbase);
2198 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2199 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2200 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2201 }
2202 root_pbl_index++;
2203 cur_pbl_index = 0;
2204 }
2205
2206 mask = !buffer_list[i].size;
2207 if (i != 0)
2208 mask |= buffer_list[i].addr;
2209 if (i != num_phys_buf - 1)
2210 mask |= buffer_list[i].addr + buffer_list[i].size;
2211
2212 if (mask & ~PAGE_MASK) {
2213 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2214 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2215 ibmr = ERR_PTR(-EINVAL);
2216 kfree(nesmr);
2217 goto reg_phys_err;
2218 }
2219
2220 region_length += buffer_list[i].size;
2221 if ((i != 0) && (single_page)) {
2222 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2223 single_page = 0;
2224 }
2225 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2226 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2227 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2228 }
2229
2230 stag = stag_index << 8;
2231 stag |= driver_key;
2232 stag += (u32)stag_key;
2233
2234 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2235 " length = 0x%016lX, index = 0x%08X\n",
2236 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2237
2238 /* Make the leaf PBL the root if only one PBL */
2239 if (root_pbl_index == 1) {
2240 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2241 }
2242
2243 if (single_page) {
2244 pbl_count = 0;
2245 } else {
2246 pbl_count = root_pbl_index;
2247 }
2248 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2249 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2250 &nesmr->pbls_used, &nesmr->pbl_4k);
2251
2252 if (ret == 0) {
2253 nesmr->ibmr.rkey = stag;
2254 nesmr->ibmr.lkey = stag;
2255 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2256 ibmr = &nesmr->ibmr;
2257 } else {
2258 kfree(nesmr);
2259 ibmr = ERR_PTR(-ENOMEM);
2260 }
2261
2262 reg_phys_err:
2263 /* free the resources */
2264 if (root_pbl_index == 1) {
2265 /* single PBL case */
2266 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2267 } else {
2268 for (i=0; i<root_pbl_index; i++) {
2269 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2270 root_vpbl.leaf_vpbl[i].pbl_pbase);
2271 }
2272 kfree(root_vpbl.leaf_vpbl);
2273 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2274 root_vpbl.pbl_pbase);
2275 }
2276
2277 return ibmr;
2278 }
2279
2280
2281 /**
2282 * nes_get_dma_mr
2283 */
2284 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2285 {
2286 struct ib_phys_buf bl;
2287 u64 kva = 0;
2288
2289 nes_debug(NES_DBG_MR, "\n");
2290
2291 bl.size = (u64)0xffffffffffULL;
2292 bl.addr = 0;
2293 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2294 }
2295
2296
2297 /**
2298 * nes_reg_user_mr
2299 */
2300 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2301 u64 virt, int acc, struct ib_udata *udata)
2302 {
2303 u64 iova_start;
2304 __le64 *pbl;
2305 u64 region_length;
2306 dma_addr_t last_dma_addr = 0;
2307 dma_addr_t first_dma_addr = 0;
2308 struct nes_pd *nespd = to_nespd(pd);
2309 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2310 struct nes_device *nesdev = nesvnic->nesdev;
2311 struct nes_adapter *nesadapter = nesdev->nesadapter;
2312 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2313 struct ib_umem_chunk *chunk;
2314 struct nes_ucontext *nes_ucontext;
2315 struct nes_pbl *nespbl;
2316 struct nes_mr *nesmr;
2317 struct ib_umem *region;
2318 struct nes_mem_reg_req req;
2319 struct nes_vpbl vpbl;
2320 struct nes_root_vpbl root_vpbl;
2321 int nmap_index, page_index;
2322 int page_count = 0;
2323 int err, pbl_depth = 0;
2324 int chunk_pages;
2325 int ret;
2326 u32 stag;
2327 u32 stag_index = 0;
2328 u32 next_stag_index;
2329 u32 driver_key;
2330 u32 root_pbl_index = 0;
2331 u32 cur_pbl_index = 0;
2332 u32 skip_pages;
2333 u16 pbl_count;
2334 u8 single_page = 1;
2335 u8 stag_key;
2336
2337 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2338 if (IS_ERR(region)) {
2339 return (struct ib_mr *)region;
2340 }
2341
2342 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2343 " offset = %u, page size = %u.\n",
2344 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2345 region->offset, region->page_size);
2346
2347 skip_pages = ((u32)region->offset) >> 12;
2348
2349 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2350 return ERR_PTR(-EFAULT);
2351 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2352
2353 switch (req.reg_type) {
2354 case IWNES_MEMREG_TYPE_MEM:
2355 pbl_depth = 0;
2356 region_length = 0;
2357 vpbl.pbl_vbase = NULL;
2358 root_vpbl.pbl_vbase = NULL;
2359 root_vpbl.pbl_pbase = 0;
2360
2361 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2362 stag_key = (u8)next_stag_index;
2363
2364 driver_key = next_stag_index & 0x70000000;
2365
2366 next_stag_index >>= 8;
2367 next_stag_index %= nesadapter->max_mr;
2368
2369 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2370 nesadapter->max_mr, &stag_index, &next_stag_index);
2371 if (err) {
2372 ib_umem_release(region);
2373 return ERR_PTR(err);
2374 }
2375
2376 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2377 if (!nesmr) {
2378 ib_umem_release(region);
2379 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2380 return ERR_PTR(-ENOMEM);
2381 }
2382 nesmr->region = region;
2383
2384 list_for_each_entry(chunk, &region->chunk_list, list) {
2385 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2386 chunk->nents, chunk->nmap);
2387 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2388 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2389 ib_umem_release(region);
2390 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2391 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2392 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2393 ibmr = ERR_PTR(-EINVAL);
2394 kfree(nesmr);
2395 goto reg_user_mr_err;
2396 }
2397
2398 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2399 ib_umem_release(region);
2400 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2401 stag_index);
2402 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2403 ibmr = ERR_PTR(-EINVAL);
2404 kfree(nesmr);
2405 goto reg_user_mr_err;
2406 }
2407
2408 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2409 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2410 region_length -= skip_pages << 12;
2411 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2412 skip_pages = 0;
2413 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2414 goto enough_pages;
2415 if ((page_count&0x01FF) == 0) {
2416 if (page_count >= 1024 * 512) {
2417 ib_umem_release(region);
2418 nes_free_resource(nesadapter,
2419 nesadapter->allocated_mrs, stag_index);
2420 kfree(nesmr);
2421 ibmr = ERR_PTR(-E2BIG);
2422 goto reg_user_mr_err;
2423 }
2424 if (root_pbl_index == 1) {
2425 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2426 8192, &root_vpbl.pbl_pbase);
2427 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2428 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2429 if (!root_vpbl.pbl_vbase) {
2430 ib_umem_release(region);
2431 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2432 vpbl.pbl_pbase);
2433 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2434 stag_index);
2435 kfree(nesmr);
2436 ibmr = ERR_PTR(-ENOMEM);
2437 goto reg_user_mr_err;
2438 }
2439 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2440 GFP_KERNEL);
2441 if (!root_vpbl.leaf_vpbl) {
2442 ib_umem_release(region);
2443 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2444 root_vpbl.pbl_pbase);
2445 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2446 vpbl.pbl_pbase);
2447 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2448 stag_index);
2449 kfree(nesmr);
2450 ibmr = ERR_PTR(-ENOMEM);
2451 goto reg_user_mr_err;
2452 }
2453 root_vpbl.pbl_vbase[0].pa_low =
2454 cpu_to_le32((u32)vpbl.pbl_pbase);
2455 root_vpbl.pbl_vbase[0].pa_high =
2456 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2457 root_vpbl.leaf_vpbl[0] = vpbl;
2458 }
2459 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2460 &vpbl.pbl_pbase);
2461 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2462 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2463 if (!vpbl.pbl_vbase) {
2464 ib_umem_release(region);
2465 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2466 ibmr = ERR_PTR(-ENOMEM);
2467 kfree(nesmr);
2468 goto reg_user_mr_err;
2469 }
2470 if (1 <= root_pbl_index) {
2471 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2472 cpu_to_le32((u32)vpbl.pbl_pbase);
2473 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2474 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2475 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2476 }
2477 root_pbl_index++;
2478 cur_pbl_index = 0;
2479 }
2480 if (single_page) {
2481 if (page_count != 0) {
2482 if ((last_dma_addr+4096) !=
2483 (sg_dma_address(&chunk->page_list[nmap_index])+
2484 (page_index*4096)))
2485 single_page = 0;
2486 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2487 (page_index*4096);
2488 } else {
2489 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2490 (page_index*4096);
2491 last_dma_addr = first_dma_addr;
2492 }
2493 }
2494
2495 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2496 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2497 (page_index*4096)));
2498 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2499 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2500 (page_index*4096))) >> 32)));
2501 cur_pbl_index++;
2502 page_count++;
2503 }
2504 }
2505 }
2506 enough_pages:
2507 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2508 " stag_key=0x%08x\n",
2509 stag_index, driver_key, stag_key);
2510 stag = stag_index << 8;
2511 stag |= driver_key;
2512 stag += (u32)stag_key;
2513
2514 iova_start = virt;
2515 /* Make the leaf PBL the root if only one PBL */
2516 if (root_pbl_index == 1) {
2517 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2518 }
2519
2520 if (single_page) {
2521 pbl_count = 0;
2522 } else {
2523 pbl_count = root_pbl_index;
2524 first_dma_addr = 0;
2525 }
2526 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2527 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2528 stag, (unsigned int)iova_start,
2529 (unsigned int)region_length, stag_index,
2530 (unsigned long long)region->length, pbl_count);
2531 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2532 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2533 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2534
2535 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2536
2537 if (ret == 0) {
2538 nesmr->ibmr.rkey = stag;
2539 nesmr->ibmr.lkey = stag;
2540 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2541 ibmr = &nesmr->ibmr;
2542 } else {
2543 ib_umem_release(region);
2544 kfree(nesmr);
2545 ibmr = ERR_PTR(-ENOMEM);
2546 }
2547
2548 reg_user_mr_err:
2549 /* free the resources */
2550 if (root_pbl_index == 1) {
2551 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2552 vpbl.pbl_pbase);
2553 } else {
2554 for (page_index=0; page_index<root_pbl_index; page_index++) {
2555 pci_free_consistent(nesdev->pcidev, 4096,
2556 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2557 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2558 }
2559 kfree(root_vpbl.leaf_vpbl);
2560 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2561 root_vpbl.pbl_pbase);
2562 }
2563
2564 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2565
2566 return ibmr;
2567 case IWNES_MEMREG_TYPE_QP:
2568 case IWNES_MEMREG_TYPE_CQ:
2569 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2570 if (!nespbl) {
2571 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2572 ib_umem_release(region);
2573 return ERR_PTR(-ENOMEM);
2574 }
2575 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2576 if (!nesmr) {
2577 ib_umem_release(region);
2578 kfree(nespbl);
2579 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2580 return ERR_PTR(-ENOMEM);
2581 }
2582 nesmr->region = region;
2583 nes_ucontext = to_nesucontext(pd->uobject->context);
2584 pbl_depth = region->length >> 12;
2585 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2586 nespbl->pbl_size = pbl_depth*sizeof(u64);
2587 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2588 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2589 } else {
2590 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2591 }
2592
2593 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2594 nespbl->pbl_size, pbl_depth);
2595 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2596 &nespbl->pbl_pbase);
2597 if (!pbl) {
2598 ib_umem_release(region);
2599 kfree(nesmr);
2600 kfree(nespbl);
2601 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2602 return ERR_PTR(-ENOMEM);
2603 }
2604
2605 nespbl->pbl_vbase = (u64 *)pbl;
2606 nespbl->user_base = start;
2607 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2608 " pbl_vbase=%p user_base=0x%lx\n",
2609 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2610 (void *) nespbl->pbl_vbase, nespbl->user_base);
2611
2612 list_for_each_entry(chunk, &region->chunk_list, list) {
2613 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2614 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2615 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2616 nespbl->page = sg_page(&chunk->page_list[0]);
2617 for (page_index=0; page_index<chunk_pages; page_index++) {
2618 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2619 (sg_dma_address(&chunk->page_list[nmap_index])+
2620 (page_index*4096)));
2621 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2622 (sg_dma_address(&chunk->page_list[nmap_index])+
2623 (page_index*4096)))>>32);
2624 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2625 (unsigned long long)*pbl,
2626 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2627 pbl++;
2628 }
2629 }
2630 }
2631 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2632 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2633 } else {
2634 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2635 }
2636 nesmr->ibmr.rkey = -1;
2637 nesmr->ibmr.lkey = -1;
2638 nesmr->mode = req.reg_type;
2639 return &nesmr->ibmr;
2640 }
2641
2642 return ERR_PTR(-ENOSYS);
2643 }
2644
2645
2646 /**
2647 * nes_dereg_mr
2648 */
2649 static int nes_dereg_mr(struct ib_mr *ib_mr)
2650 {
2651 struct nes_mr *nesmr = to_nesmr(ib_mr);
2652 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2653 struct nes_device *nesdev = nesvnic->nesdev;
2654 struct nes_adapter *nesadapter = nesdev->nesadapter;
2655 struct nes_hw_cqp_wqe *cqp_wqe;
2656 struct nes_cqp_request *cqp_request;
2657 unsigned long flags;
2658 int ret;
2659 u16 major_code;
2660 u16 minor_code;
2661
2662 if (nesmr->region) {
2663 ib_umem_release(nesmr->region);
2664 }
2665 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2666 kfree(nesmr);
2667 return 0;
2668 }
2669
2670 /* Deallocate the region with the adapter */
2671
2672 cqp_request = nes_get_cqp_request(nesdev);
2673 if (cqp_request == NULL) {
2674 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2675 return -ENOMEM;
2676 }
2677 cqp_request->waiting = 1;
2678 cqp_wqe = &cqp_request->cqp_wqe;
2679
2680 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2681 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2682 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2683 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2684 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2685
2686 atomic_set(&cqp_request->refcount, 2);
2687 nes_post_cqp_request(nesdev, cqp_request);
2688
2689 /* Wait for CQP */
2690 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2691 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2692 NES_EVENT_TIMEOUT);
2693 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2694 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2695 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2696
2697 major_code = cqp_request->major_code;
2698 minor_code = cqp_request->minor_code;
2699
2700 nes_put_cqp_request(nesdev, cqp_request);
2701
2702 if (!ret) {
2703 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2704 " ib_mr=%p, rkey = 0x%08X\n",
2705 ib_mr, ib_mr->rkey);
2706 return -ETIME;
2707 } else if (major_code) {
2708 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2709 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2710 major_code, minor_code, ib_mr, ib_mr->rkey);
2711 return -EIO;
2712 }
2713
2714 if (nesmr->pbls_used != 0) {
2715 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2716 if (nesmr->pbl_4k) {
2717 nesadapter->free_4kpbl += nesmr->pbls_used;
2718 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2719 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2720 "exceeded the max(%u)\n",
2721 nesadapter->free_4kpbl,
2722 nesadapter->max_4kpbl);
2723 } else {
2724 nesadapter->free_256pbl += nesmr->pbls_used;
2725 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2726 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2727 "exceeded the max(%u)\n",
2728 nesadapter->free_256pbl,
2729 nesadapter->max_256pbl);
2730 }
2731 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2732 }
2733 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2734 (ib_mr->rkey & 0x0fffff00) >> 8);
2735
2736 kfree(nesmr);
2737
2738 return 0;
2739 }
2740
2741
2742 /**
2743 * show_rev
2744 */
2745 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2746 char *buf)
2747 {
2748 struct nes_ib_device *nesibdev =
2749 container_of(dev, struct nes_ib_device, ibdev.dev);
2750 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2751
2752 nes_debug(NES_DBG_INIT, "\n");
2753 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2754 }
2755
2756
2757 /**
2758 * show_fw_ver
2759 */
2760 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2761 char *buf)
2762 {
2763 struct nes_ib_device *nesibdev =
2764 container_of(dev, struct nes_ib_device, ibdev.dev);
2765 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2766
2767 nes_debug(NES_DBG_INIT, "\n");
2768 return sprintf(buf, "%u.%u\n",
2769 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2770 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2771 }
2772
2773
2774 /**
2775 * show_hca
2776 */
2777 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2778 char *buf)
2779 {
2780 nes_debug(NES_DBG_INIT, "\n");
2781 return sprintf(buf, "NES020\n");
2782 }
2783
2784
2785 /**
2786 * show_board
2787 */
2788 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2789 char *buf)
2790 {
2791 nes_debug(NES_DBG_INIT, "\n");
2792 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2793 }
2794
2795
2796 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2797 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2798 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2799 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2800
2801 static struct device_attribute *nes_dev_attributes[] = {
2802 &dev_attr_hw_rev,
2803 &dev_attr_fw_ver,
2804 &dev_attr_hca_type,
2805 &dev_attr_board_id
2806 };
2807
2808
2809 /**
2810 * nes_query_qp
2811 */
2812 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2813 int attr_mask, struct ib_qp_init_attr *init_attr)
2814 {
2815 struct nes_qp *nesqp = to_nesqp(ibqp);
2816
2817 nes_debug(NES_DBG_QP, "\n");
2818
2819 attr->qp_access_flags = 0;
2820 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2821 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2822 attr->cap.max_recv_sge = 1;
2823 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2824 attr->cap.max_inline_data = 0;
2825 else
2826 attr->cap.max_inline_data = 64;
2827
2828 init_attr->event_handler = nesqp->ibqp.event_handler;
2829 init_attr->qp_context = nesqp->ibqp.qp_context;
2830 init_attr->send_cq = nesqp->ibqp.send_cq;
2831 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2832 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2833 init_attr->cap = attr->cap;
2834
2835 return 0;
2836 }
2837
2838
2839 /**
2840 * nes_hw_modify_qp
2841 */
2842 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2843 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2844 {
2845 struct nes_hw_cqp_wqe *cqp_wqe;
2846 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2847 /* struct iw_cm_event cm_event; */
2848 struct nes_cqp_request *cqp_request;
2849 int ret;
2850 u16 major_code;
2851
2852 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2853 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2854
2855 cqp_request = nes_get_cqp_request(nesdev);
2856 if (cqp_request == NULL) {
2857 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2858 return -ENOMEM;
2859 }
2860 if (wait_completion) {
2861 cqp_request->waiting = 1;
2862 } else {
2863 cqp_request->waiting = 0;
2864 }
2865 cqp_wqe = &cqp_request->cqp_wqe;
2866
2867 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2868 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2869 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2870 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2871 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2872 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2873 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2874
2875 /* If sending a terminate message, fill in the length (in words) */
2876 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2877 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2878 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2879 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2880 }
2881
2882 atomic_set(&cqp_request->refcount, 2);
2883 nes_post_cqp_request(nesdev, cqp_request);
2884
2885 /* Wait for CQP */
2886 if (wait_completion) {
2887 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2888 nesqp->hwqp.qp_id); */
2889 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2890 NES_EVENT_TIMEOUT);
2891 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2892 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2893 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2894 major_code = cqp_request->major_code;
2895 if (major_code) {
2896 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2897 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2898 nesqp->hwqp.qp_id, cqp_request->major_code,
2899 cqp_request->minor_code, next_iwarp_state);
2900 }
2901
2902 nes_put_cqp_request(nesdev, cqp_request);
2903
2904 if (!ret)
2905 return -ETIME;
2906 else if (major_code)
2907 return -EIO;
2908 else
2909 return 0;
2910 } else {
2911 return 0;
2912 }
2913 }
2914
2915
2916 /**
2917 * nes_modify_qp
2918 */
2919 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2920 int attr_mask, struct ib_udata *udata)
2921 {
2922 struct nes_qp *nesqp = to_nesqp(ibqp);
2923 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2924 struct nes_device *nesdev = nesvnic->nesdev;
2925 /* u32 cqp_head; */
2926 /* u32 counter; */
2927 u32 next_iwarp_state = 0;
2928 int err;
2929 unsigned long qplockflags;
2930 int ret;
2931 u16 original_last_aeq;
2932 u8 issue_modify_qp = 0;
2933 u8 dont_wait = 0;
2934
2935 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2936 " iwarp_state=0x%X, refcount=%d\n",
2937 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2938 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2939
2940 spin_lock_irqsave(&nesqp->lock, qplockflags);
2941
2942 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2943 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2944 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2945 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2946
2947 if (attr_mask & IB_QP_STATE) {
2948 switch (attr->qp_state) {
2949 case IB_QPS_INIT:
2950 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2951 nesqp->hwqp.qp_id);
2952 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2953 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2954 return -EINVAL;
2955 }
2956 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2957 issue_modify_qp = 1;
2958 break;
2959 case IB_QPS_RTR:
2960 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2961 nesqp->hwqp.qp_id);
2962 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2963 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2964 return -EINVAL;
2965 }
2966 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2967 issue_modify_qp = 1;
2968 break;
2969 case IB_QPS_RTS:
2970 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2971 nesqp->hwqp.qp_id);
2972 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2973 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2974 return -EINVAL;
2975 }
2976 if (nesqp->cm_id == NULL) {
2977 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2978 nesqp->hwqp.qp_id );
2979 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2980 return -EINVAL;
2981 }
2982 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2983 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2984 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2985 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2986 issue_modify_qp = 1;
2987 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2988 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2989 nesqp->hte_added = 1;
2990 break;
2991 case IB_QPS_SQD:
2992 issue_modify_qp = 1;
2993 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2994 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2995 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2996 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2997 return 0;
2998 } else {
2999 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3000 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3001 " ignored due to current iWARP state\n",
3002 nesqp->hwqp.qp_id);
3003 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3004 return -EINVAL;
3005 }
3006 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3007 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3008 " already done based on hw state.\n",
3009 nesqp->hwqp.qp_id);
3010 issue_modify_qp = 0;
3011 }
3012 switch (nesqp->hw_iwarp_state) {
3013 case NES_AEQE_IWARP_STATE_CLOSING:
3014 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3015 case NES_AEQE_IWARP_STATE_TERMINATE:
3016 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3017 break;
3018 case NES_AEQE_IWARP_STATE_ERROR:
3019 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3020 break;
3021 default:
3022 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3023 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3024 break;
3025 }
3026 }
3027 break;
3028 case IB_QPS_SQE:
3029 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3030 nesqp->hwqp.qp_id);
3031 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3032 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3033 return -EINVAL;
3034 }
3035 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3036 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3037 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3038 issue_modify_qp = 1;
3039 break;
3040 case IB_QPS_ERR:
3041 case IB_QPS_RESET:
3042 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3043 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3044 return -EINVAL;
3045 }
3046 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3047 nesqp->hwqp.qp_id);
3048 if (nesqp->term_flags)
3049 del_timer(&nesqp->terminate_timer);
3050
3051 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3052 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3053 if (nesqp->hte_added) {
3054 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3055 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3056 nesqp->hte_added = 0;
3057 }
3058 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3059 (nesdev->iw_status) &&
3060 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3061 next_iwarp_state |= NES_CQP_QP_RESET;
3062 } else {
3063 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3064 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3065 dont_wait = 1;
3066 }
3067 issue_modify_qp = 1;
3068 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3069 break;
3070 default:
3071 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3072 return -EINVAL;
3073 break;
3074 }
3075
3076 nesqp->ibqp_state = attr->qp_state;
3077 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3078 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3079 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3080 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3081 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3082 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3083 nesqp->iwarp_state);
3084 } else {
3085 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3086 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3087 nesqp->iwarp_state);
3088 }
3089 }
3090
3091 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3092 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3093 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3094 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3095 issue_modify_qp = 1;
3096 }
3097 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3098 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3099 issue_modify_qp = 1;
3100 }
3101 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3102 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3103 issue_modify_qp = 1;
3104 }
3105 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3106 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3107 issue_modify_qp = 1;
3108 }
3109
3110 if (nesqp->user_mode) {
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 }
3116
3117 original_last_aeq = nesqp->last_aeq;
3118 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3119
3120 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3121
3122 ret = 0;
3123
3124
3125 if (issue_modify_qp) {
3126 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3127 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3128 if (ret)
3129 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3130 " failed for QP%u.\n",
3131 next_iwarp_state, nesqp->hwqp.qp_id);
3132
3133 }
3134
3135 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3136 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3137 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3138 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3139 original_last_aeq, nesqp->last_aeq);
3140 if ((!ret) ||
3141 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3142 (ret))) {
3143 if (dont_wait) {
3144 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3145 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3146 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3147 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3148 original_last_aeq, nesqp->last_aeq);
3149 /* this one is for the cm_disconnect thread */
3150 spin_lock_irqsave(&nesqp->lock, qplockflags);
3151 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3152 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3153 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3154 nes_cm_disconn(nesqp);
3155 } else {
3156 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3157 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3158 }
3159 } else {
3160 spin_lock_irqsave(&nesqp->lock, qplockflags);
3161 if (nesqp->cm_id) {
3162 /* These two are for the timer thread */
3163 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3164 nesqp->cm_id->add_ref(nesqp->cm_id);
3165 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3166 " need ae to finish up, original_last_aeq = 0x%04X."
3167 " last_aeq = 0x%04X, scheduling timer.\n",
3168 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3169 original_last_aeq, nesqp->last_aeq);
3170 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3171 }
3172 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3173 } else {
3174 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3175 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3176 " need ae to finish up, original_last_aeq = 0x%04X."
3177 " last_aeq = 0x%04X.\n",
3178 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3179 original_last_aeq, nesqp->last_aeq);
3180 }
3181 }
3182 } else {
3183 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3184 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3185 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3186 original_last_aeq, nesqp->last_aeq);
3187 }
3188 } else {
3189 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3190 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3191 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3192 original_last_aeq, nesqp->last_aeq);
3193 }
3194
3195 err = 0;
3196
3197 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3198 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3199
3200 return err;
3201 }
3202
3203
3204 /**
3205 * nes_muticast_attach
3206 */
3207 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3208 {
3209 nes_debug(NES_DBG_INIT, "\n");
3210 return -ENOSYS;
3211 }
3212
3213
3214 /**
3215 * nes_multicast_detach
3216 */
3217 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3218 {
3219 nes_debug(NES_DBG_INIT, "\n");
3220 return -ENOSYS;
3221 }
3222
3223
3224 /**
3225 * nes_process_mad
3226 */
3227 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3228 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3229 struct ib_mad *in_mad, struct ib_mad *out_mad)
3230 {
3231 nes_debug(NES_DBG_INIT, "\n");
3232 return -ENOSYS;
3233 }
3234
3235 static inline void
3236 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3237 {
3238 int sge_index;
3239 int total_payload_length = 0;
3240 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3241 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3242 ib_wr->sg_list[sge_index].addr);
3243 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3244 ib_wr->sg_list[sge_index].length);
3245 if (uselkey)
3246 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3247 (ib_wr->sg_list[sge_index].lkey));
3248 else
3249 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3250
3251 total_payload_length += ib_wr->sg_list[sge_index].length;
3252 }
3253 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3254 total_payload_length);
3255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3256 total_payload_length);
3257 }
3258
3259 /**
3260 * nes_post_send
3261 */
3262 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3263 struct ib_send_wr **bad_wr)
3264 {
3265 u64 u64temp;
3266 unsigned long flags = 0;
3267 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3268 struct nes_device *nesdev = nesvnic->nesdev;
3269 struct nes_qp *nesqp = to_nesqp(ibqp);
3270 struct nes_hw_qp_wqe *wqe;
3271 int err = 0;
3272 u32 qsize = nesqp->hwqp.sq_size;
3273 u32 head;
3274 u32 wqe_misc = 0;
3275 u32 wqe_count = 0;
3276 u32 counter;
3277
3278 if (nesqp->ibqp_state > IB_QPS_RTS) {
3279 err = -EINVAL;
3280 goto out;
3281 }
3282
3283 spin_lock_irqsave(&nesqp->lock, flags);
3284
3285 head = nesqp->hwqp.sq_head;
3286
3287 while (ib_wr) {
3288 /* Check for QP error */
3289 if (nesqp->term_flags) {
3290 err = -EINVAL;
3291 break;
3292 }
3293
3294 /* Check for SQ overflow */
3295 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3296 err = -ENOMEM;
3297 break;
3298 }
3299
3300 wqe = &nesqp->hwqp.sq_vbase[head];
3301 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3302 nesqp->hwqp.qp_id, wqe, head); */
3303 nes_fill_init_qp_wqe(wqe, nesqp, head);
3304 u64temp = (u64)(ib_wr->wr_id);
3305 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3306 u64temp);
3307 switch (ib_wr->opcode) {
3308 case IB_WR_SEND:
3309 case IB_WR_SEND_WITH_INV:
3310 if (IB_WR_SEND == ib_wr->opcode) {
3311 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3312 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3313 else
3314 wqe_misc = NES_IWARP_SQ_OP_SEND;
3315 } else {
3316 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3317 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3318 else
3319 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3320
3321 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3322 ib_wr->ex.invalidate_rkey);
3323 }
3324
3325 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3326 err = -EINVAL;
3327 break;
3328 }
3329
3330 if (ib_wr->send_flags & IB_SEND_FENCE)
3331 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3332
3333 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3334 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3335 (ib_wr->sg_list[0].length <= 64)) {
3336 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3337 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3338 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3339 ib_wr->sg_list[0].length);
3340 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3341 } else {
3342 fill_wqe_sg_send(wqe, ib_wr, 1);
3343 }
3344
3345 break;
3346 case IB_WR_RDMA_WRITE:
3347 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3348 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3349 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3350 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3351 err = -EINVAL;
3352 break;
3353 }
3354
3355 if (ib_wr->send_flags & IB_SEND_FENCE)
3356 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3357
3358 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3359 ib_wr->wr.rdma.rkey);
3360 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3361 ib_wr->wr.rdma.remote_addr);
3362
3363 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3364 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3365 (ib_wr->sg_list[0].length <= 64)) {
3366 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3367 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3368 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3369 ib_wr->sg_list[0].length);
3370 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3371 } else {
3372 fill_wqe_sg_send(wqe, ib_wr, 1);
3373 }
3374
3375 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3376 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3377 break;
3378 case IB_WR_RDMA_READ:
3379 case IB_WR_RDMA_READ_WITH_INV:
3380 /* iWARP only supports 1 sge for RDMA reads */
3381 if (ib_wr->num_sge > 1) {
3382 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3383 ib_wr->num_sge);
3384 err = -EINVAL;
3385 break;
3386 }
3387 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3388 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3389 } else {
3390 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3391 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3392 ib_wr->ex.invalidate_rkey);
3393 }
3394
3395 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3396 ib_wr->wr.rdma.remote_addr);
3397 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3398 ib_wr->wr.rdma.rkey);
3399 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3400 ib_wr->sg_list->length);
3401 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3402 ib_wr->sg_list->addr);
3403 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3404 ib_wr->sg_list->lkey);
3405 break;
3406 case IB_WR_LOCAL_INV:
3407 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3408 set_wqe_32bit_value(wqe->wqe_words,
3409 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3410 ib_wr->ex.invalidate_rkey);
3411 break;
3412 case IB_WR_FAST_REG_MR:
3413 {
3414 int i;
3415 int flags = ib_wr->wr.fast_reg.access_flags;
3416 struct nes_ib_fast_reg_page_list *pnesfrpl =
3417 container_of(ib_wr->wr.fast_reg.page_list,
3418 struct nes_ib_fast_reg_page_list,
3419 ibfrpl);
3420 u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
3421 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
3422
3423 if (ib_wr->wr.fast_reg.page_list_len >
3424 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3425 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3426 err = -EINVAL;
3427 break;
3428 }
3429 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3430 set_wqe_64bit_value(wqe->wqe_words,
3431 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3432 ib_wr->wr.fast_reg.iova_start);
3433 set_wqe_32bit_value(wqe->wqe_words,
3434 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3435 ib_wr->wr.fast_reg.length);
3436 set_wqe_32bit_value(wqe->wqe_words,
3437 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3438 ib_wr->wr.fast_reg.rkey);
3439 /* Set page size: */
3440 if (ib_wr->wr.fast_reg.page_shift == 12) {
3441 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3442 } else if (ib_wr->wr.fast_reg.page_shift == 21) {
3443 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3444 } else {
3445 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3446 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3447 err = -EINVAL;
3448 break;
3449 }
3450 /* Set access_flags */
3451 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3452 if (flags & IB_ACCESS_LOCAL_WRITE)
3453 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3454
3455 if (flags & IB_ACCESS_REMOTE_WRITE)
3456 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3457
3458 if (flags & IB_ACCESS_REMOTE_READ)
3459 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3460
3461 if (flags & IB_ACCESS_MW_BIND)
3462 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3463
3464 /* Fill in PBL info: */
3465 if (ib_wr->wr.fast_reg.page_list_len >
3466 pnesfrpl->ibfrpl.max_page_list_len) {
3467 nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
3468 " ib_wr=%p, value=%u, max=%u\n",
3469 ib_wr, ib_wr->wr.fast_reg.page_list_len,
3470 pnesfrpl->ibfrpl.max_page_list_len);
3471 err = -EINVAL;
3472 break;
3473 }
3474
3475 set_wqe_64bit_value(wqe->wqe_words,
3476 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3477 pnesfrpl->nes_wqe_pbl.paddr);
3478
3479 set_wqe_32bit_value(wqe->wqe_words,
3480 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3481 ib_wr->wr.fast_reg.page_list_len * 8);
3482
3483 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++)
3484 dst_page_list[i] = cpu_to_le64(src_page_list[i]);
3485
3486 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %p, "
3487 "length: %d, rkey: %0x, pgl_paddr: %p, "
3488 "page_list_len: %u, wqe_misc: %x\n",
3489 (void *)ib_wr->wr.fast_reg.iova_start,
3490 ib_wr->wr.fast_reg.length,
3491 ib_wr->wr.fast_reg.rkey,
3492 (void *)pnesfrpl->nes_wqe_pbl.paddr,
3493 ib_wr->wr.fast_reg.page_list_len,
3494 wqe_misc);
3495 break;
3496 }
3497 default:
3498 /* error */
3499 err = -EINVAL;
3500 break;
3501 }
3502
3503 if (err)
3504 break;
3505
3506 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3507 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3508
3509 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3510
3511 ib_wr = ib_wr->next;
3512 head++;
3513 wqe_count++;
3514 if (head >= qsize)
3515 head = 0;
3516
3517 }
3518
3519 nesqp->hwqp.sq_head = head;
3520 barrier();
3521 while (wqe_count) {
3522 counter = min(wqe_count, ((u32)255));
3523 wqe_count -= counter;
3524 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3525 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3526 }
3527
3528 spin_unlock_irqrestore(&nesqp->lock, flags);
3529
3530 out:
3531 if (err)
3532 *bad_wr = ib_wr;
3533 return err;
3534 }
3535
3536
3537 /**
3538 * nes_post_recv
3539 */
3540 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3541 struct ib_recv_wr **bad_wr)
3542 {
3543 u64 u64temp;
3544 unsigned long flags = 0;
3545 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3546 struct nes_device *nesdev = nesvnic->nesdev;
3547 struct nes_qp *nesqp = to_nesqp(ibqp);
3548 struct nes_hw_qp_wqe *wqe;
3549 int err = 0;
3550 int sge_index;
3551 u32 qsize = nesqp->hwqp.rq_size;
3552 u32 head;
3553 u32 wqe_count = 0;
3554 u32 counter;
3555 u32 total_payload_length;
3556
3557 if (nesqp->ibqp_state > IB_QPS_RTS) {
3558 err = -EINVAL;
3559 goto out;
3560 }
3561
3562 spin_lock_irqsave(&nesqp->lock, flags);
3563
3564 head = nesqp->hwqp.rq_head;
3565
3566 while (ib_wr) {
3567 /* Check for QP error */
3568 if (nesqp->term_flags) {
3569 err = -EINVAL;
3570 break;
3571 }
3572
3573 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3574 err = -EINVAL;
3575 break;
3576 }
3577 /* Check for RQ overflow */
3578 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3579 err = -ENOMEM;
3580 break;
3581 }
3582
3583 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3584 wqe = &nesqp->hwqp.rq_vbase[head];
3585
3586 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3587 nesqp->hwqp.qp_id, wqe, head); */
3588 nes_fill_init_qp_wqe(wqe, nesqp, head);
3589 u64temp = (u64)(ib_wr->wr_id);
3590 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3591 u64temp);
3592 total_payload_length = 0;
3593 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3594 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3595 ib_wr->sg_list[sge_index].addr);
3596 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3597 ib_wr->sg_list[sge_index].length);
3598 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3599 ib_wr->sg_list[sge_index].lkey);
3600
3601 total_payload_length += ib_wr->sg_list[sge_index].length;
3602 }
3603 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3604 total_payload_length);
3605
3606 ib_wr = ib_wr->next;
3607 head++;
3608 wqe_count++;
3609 if (head >= qsize)
3610 head = 0;
3611 }
3612
3613 nesqp->hwqp.rq_head = head;
3614 barrier();
3615 while (wqe_count) {
3616 counter = min(wqe_count, ((u32)255));
3617 wqe_count -= counter;
3618 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3619 }
3620
3621 spin_unlock_irqrestore(&nesqp->lock, flags);
3622
3623 out:
3624 if (err)
3625 *bad_wr = ib_wr;
3626 return err;
3627 }
3628
3629
3630 /**
3631 * nes_poll_cq
3632 */
3633 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3634 {
3635 u64 u64temp;
3636 u64 wrid;
3637 unsigned long flags = 0;
3638 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3639 struct nes_device *nesdev = nesvnic->nesdev;
3640 struct nes_cq *nescq = to_nescq(ibcq);
3641 struct nes_qp *nesqp;
3642 struct nes_hw_cqe cqe;
3643 u32 head;
3644 u32 wq_tail = 0;
3645 u32 cq_size;
3646 u32 cqe_count = 0;
3647 u32 wqe_index;
3648 u32 u32temp;
3649 u32 move_cq_head = 1;
3650 u32 err_code;
3651
3652 nes_debug(NES_DBG_CQ, "\n");
3653
3654 spin_lock_irqsave(&nescq->lock, flags);
3655
3656 head = nescq->hw_cq.cq_head;
3657 cq_size = nescq->hw_cq.cq_size;
3658
3659 while (cqe_count < num_entries) {
3660 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3661 NES_CQE_VALID) == 0)
3662 break;
3663
3664 /*
3665 * Make sure we read CQ entry contents *after*
3666 * we've checked the valid bit.
3667 */
3668 rmb();
3669
3670 cqe = nescq->hw_cq.cq_vbase[head];
3671 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3672 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3673 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3674 /* parse CQE, get completion context from WQE (either rq or sq) */
3675 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3676 ((u64)u32temp);
3677
3678 if (u64temp) {
3679 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3680 memset(entry, 0, sizeof *entry);
3681 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3682 entry->status = IB_WC_SUCCESS;
3683 } else {
3684 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3685 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3686 entry->status = err_code & 0x0000ffff;
3687
3688 /* The rest of the cqe's will be marked as flushed */
3689 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3690 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3691 NES_IWARP_CQE_MINOR_FLUSH);
3692 } else
3693 entry->status = IB_WC_WR_FLUSH_ERR;
3694 }
3695
3696 entry->qp = &nesqp->ibqp;
3697 entry->src_qp = nesqp->hwqp.qp_id;
3698
3699 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3700 if (nesqp->skip_lsmm) {
3701 nesqp->skip_lsmm = 0;
3702 nesqp->hwqp.sq_tail++;
3703 }
3704
3705 /* Working on a SQ Completion*/
3706 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3707 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3708 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3709 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3710 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3711 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3712
3713 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3714 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3715 case NES_IWARP_SQ_OP_RDMAW:
3716 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3717 entry->opcode = IB_WC_RDMA_WRITE;
3718 break;
3719 case NES_IWARP_SQ_OP_RDMAR:
3720 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3721 entry->opcode = IB_WC_RDMA_READ;
3722 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3723 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3724 break;
3725 case NES_IWARP_SQ_OP_SENDINV:
3726 case NES_IWARP_SQ_OP_SENDSEINV:
3727 case NES_IWARP_SQ_OP_SEND:
3728 case NES_IWARP_SQ_OP_SENDSE:
3729 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3730 entry->opcode = IB_WC_SEND;
3731 break;
3732 case NES_IWARP_SQ_OP_LOCINV:
3733 entry->opcode = IB_WR_LOCAL_INV;
3734 break;
3735 case NES_IWARP_SQ_OP_FAST_REG:
3736 entry->opcode = IB_WC_FAST_REG_MR;
3737 break;
3738 }
3739
3740 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3741 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3742 move_cq_head = 0;
3743 wq_tail = nesqp->hwqp.sq_tail;
3744 }
3745 } else {
3746 /* Working on a RQ Completion*/
3747 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3748 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3749 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3750 entry->opcode = IB_WC_RECV;
3751
3752 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3753 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3754 move_cq_head = 0;
3755 wq_tail = nesqp->hwqp.rq_tail;
3756 }
3757 }
3758
3759 entry->wr_id = wrid;
3760 entry++;
3761 cqe_count++;
3762 }
3763
3764 if (move_cq_head) {
3765 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3766 if (++head >= cq_size)
3767 head = 0;
3768 nescq->polled_completions++;
3769
3770 if ((nescq->polled_completions > (cq_size / 2)) ||
3771 (nescq->polled_completions == 255)) {
3772 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3773 " are pending %u of %u.\n",
3774 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3775 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3776 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3777 nescq->polled_completions = 0;
3778 }
3779 } else {
3780 /* Update the wqe index and set status to flush */
3781 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3782 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3783 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3784 cpu_to_le32(wqe_index);
3785 move_cq_head = 1; /* ready for next pass */
3786 }
3787 }
3788
3789 if (nescq->polled_completions) {
3790 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3791 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3792 nescq->polled_completions = 0;
3793 }
3794
3795 nescq->hw_cq.cq_head = head;
3796 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3797 cqe_count, nescq->hw_cq.cq_number);
3798
3799 spin_unlock_irqrestore(&nescq->lock, flags);
3800
3801 return cqe_count;
3802 }
3803
3804
3805 /**
3806 * nes_req_notify_cq
3807 */
3808 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3809 {
3810 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3811 struct nes_device *nesdev = nesvnic->nesdev;
3812 struct nes_cq *nescq = to_nescq(ibcq);
3813 u32 cq_arm;
3814
3815 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3816 nescq->hw_cq.cq_number);
3817
3818 cq_arm = nescq->hw_cq.cq_number;
3819 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3820 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3821 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3822 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3823 else
3824 return -EINVAL;
3825
3826 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3827 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3828
3829 return 0;
3830 }
3831
3832
3833 /**
3834 * nes_init_ofa_device
3835 */
3836 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3837 {
3838 struct nes_ib_device *nesibdev;
3839 struct nes_vnic *nesvnic = netdev_priv(netdev);
3840 struct nes_device *nesdev = nesvnic->nesdev;
3841
3842 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3843 if (nesibdev == NULL) {
3844 return NULL;
3845 }
3846 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3847 nesibdev->ibdev.owner = THIS_MODULE;
3848
3849 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3850 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3851 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3852
3853 nesibdev->ibdev.uverbs_cmd_mask =
3854 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3855 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3856 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3857 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3858 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3859 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3860 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3861 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3862 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3863 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3864 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3865 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3866 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3867 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3868 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3869 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3870 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3871 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3872 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3873 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3874 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3875 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3876
3877 nesibdev->ibdev.phys_port_cnt = 1;
3878 nesibdev->ibdev.num_comp_vectors = 1;
3879 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3880 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3881 nesibdev->ibdev.query_device = nes_query_device;
3882 nesibdev->ibdev.query_port = nes_query_port;
3883 nesibdev->ibdev.modify_port = nes_modify_port;
3884 nesibdev->ibdev.query_pkey = nes_query_pkey;
3885 nesibdev->ibdev.query_gid = nes_query_gid;
3886 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3887 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3888 nesibdev->ibdev.mmap = nes_mmap;
3889 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3890 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3891 nesibdev->ibdev.create_ah = nes_create_ah;
3892 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3893 nesibdev->ibdev.create_qp = nes_create_qp;
3894 nesibdev->ibdev.modify_qp = nes_modify_qp;
3895 nesibdev->ibdev.query_qp = nes_query_qp;
3896 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3897 nesibdev->ibdev.create_cq = nes_create_cq;
3898 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3899 nesibdev->ibdev.poll_cq = nes_poll_cq;
3900 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3901 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3902 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3903 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3904 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3905 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3906 nesibdev->ibdev.bind_mw = nes_bind_mw;
3907
3908 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr;
3909 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
3910 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
3911
3912 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3913 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3914 nesibdev->ibdev.process_mad = nes_process_mad;
3915
3916 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3917 nesibdev->ibdev.post_send = nes_post_send;
3918 nesibdev->ibdev.post_recv = nes_post_recv;
3919
3920 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3921 if (nesibdev->ibdev.iwcm == NULL) {
3922 ib_dealloc_device(&nesibdev->ibdev);
3923 return NULL;
3924 }
3925 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3926 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3927 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3928 nesibdev->ibdev.iwcm->connect = nes_connect;
3929 nesibdev->ibdev.iwcm->accept = nes_accept;
3930 nesibdev->ibdev.iwcm->reject = nes_reject;
3931 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3932 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3933
3934 return nesibdev;
3935 }
3936
3937 void nes_port_ibevent(struct nes_vnic *nesvnic)
3938 {
3939 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3940 struct nes_device *nesdev = nesvnic->nesdev;
3941 struct ib_event event;
3942 event.device = &nesibdev->ibdev;
3943 event.element.port_num = nesvnic->logical_port + 1;
3944 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3945 ib_dispatch_event(&event);
3946 }
3947
3948
3949 /**
3950 * nes_destroy_ofa_device
3951 */
3952 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3953 {
3954 if (nesibdev == NULL)
3955 return;
3956
3957 nes_unregister_ofa_device(nesibdev);
3958
3959 kfree(nesibdev->ibdev.iwcm);
3960 ib_dealloc_device(&nesibdev->ibdev);
3961 }
3962
3963
3964 /**
3965 * nes_register_ofa_device
3966 */
3967 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3968 {
3969 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3970 struct nes_device *nesdev = nesvnic->nesdev;
3971 struct nes_adapter *nesadapter = nesdev->nesadapter;
3972 int i, ret;
3973
3974 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3975 if (ret) {
3976 return ret;
3977 }
3978
3979 /* Get the resources allocated to this device */
3980 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3981 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3982 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3983 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3984
3985 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3986 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3987 if (ret) {
3988 while (i > 0) {
3989 i--;
3990 device_remove_file(&nesibdev->ibdev.dev,
3991 nes_dev_attributes[i]);
3992 }
3993 ib_unregister_device(&nesibdev->ibdev);
3994 return ret;
3995 }
3996 }
3997
3998 nesvnic->of_device_registered = 1;
3999
4000 return 0;
4001 }
4002
4003
4004 /**
4005 * nes_unregister_ofa_device
4006 */
4007 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
4008 {
4009 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4010 int i;
4011
4012 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4013 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4014 }
4015
4016 if (nesvnic->of_device_registered) {
4017 ib_unregister_device(&nesibdev->ibdev);
4018 }
4019
4020 nesvnic->of_device_registered = 0;
4021 }
Tomato firmware and modifications.