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IB/core: Allow device-specific per-port sysfs files
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / infiniband / hw / nes / nes_verbs.c
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->fw_ver;
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, 0, 0};
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, pbl_depth = 0;
2116 int ret = 0;
2117 u16 pbl_count = 0;
2118 u8 single_page = 1;
2119 u8 stag_key = 0;
2120
2121 pbl_depth = 0;
2122 region_length = 0;
2123 vpbl.pbl_vbase = NULL;
2124 root_vpbl.pbl_vbase = NULL;
2125 root_vpbl.pbl_pbase = 0;
2126
2127 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2128 stag_key = (u8)next_stag_index;
2129
2130 driver_key = 0;
2131
2132 next_stag_index >>= 8;
2133 next_stag_index %= nesadapter->max_mr;
2134 if (num_phys_buf > (1024*512)) {
2135 return ERR_PTR(-E2BIG);
2136 }
2137
2138 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2139 return ERR_PTR(-EINVAL);
2140
2141 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2142 &stag_index, &next_stag_index);
2143 if (err) {
2144 return ERR_PTR(err);
2145 }
2146
2147 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2148 if (!nesmr) {
2149 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2150 return ERR_PTR(-ENOMEM);
2151 }
2152
2153 for (i = 0; i < num_phys_buf; i++) {
2154
2155 if ((i & 0x01FF) == 0) {
2156 if (root_pbl_index == 1) {
2157 /* Allocate the root PBL */
2158 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2159 &root_vpbl.pbl_pbase);
2160 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2161 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2162 if (!root_vpbl.pbl_vbase) {
2163 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2164 vpbl.pbl_pbase);
2165 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2166 kfree(nesmr);
2167 return ERR_PTR(-ENOMEM);
2168 }
2169 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2170 if (!root_vpbl.leaf_vpbl) {
2171 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2172 root_vpbl.pbl_pbase);
2173 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2174 vpbl.pbl_pbase);
2175 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2176 kfree(nesmr);
2177 return ERR_PTR(-ENOMEM);
2178 }
2179 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2180 root_vpbl.pbl_vbase[0].pa_high =
2181 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2182 root_vpbl.leaf_vpbl[0] = vpbl;
2183 }
2184 /* Allocate a 4K buffer for the PBL */
2185 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2186 &vpbl.pbl_pbase);
2187 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2188 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2189 if (!vpbl.pbl_vbase) {
2190 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2191 ibmr = ERR_PTR(-ENOMEM);
2192 kfree(nesmr);
2193 goto reg_phys_err;
2194 }
2195 /* Fill in the root table */
2196 if (1 <= root_pbl_index) {
2197 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2198 cpu_to_le32((u32)vpbl.pbl_pbase);
2199 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2200 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2201 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2202 }
2203 root_pbl_index++;
2204 cur_pbl_index = 0;
2205 }
2206
2207 mask = !buffer_list[i].size;
2208 if (i != 0)
2209 mask |= buffer_list[i].addr;
2210 if (i != num_phys_buf - 1)
2211 mask |= buffer_list[i].addr + buffer_list[i].size;
2212
2213 if (mask & ~PAGE_MASK) {
2214 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2215 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2216 ibmr = ERR_PTR(-EINVAL);
2217 kfree(nesmr);
2218 goto reg_phys_err;
2219 }
2220
2221 region_length += buffer_list[i].size;
2222 if ((i != 0) && (single_page)) {
2223 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2224 single_page = 0;
2225 }
2226 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2227 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2228 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2229 }
2230
2231 stag = stag_index << 8;
2232 stag |= driver_key;
2233 stag += (u32)stag_key;
2234
2235 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2236 " length = 0x%016lX, index = 0x%08X\n",
2237 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2238
2239 /* Make the leaf PBL the root if only one PBL */
2240 if (root_pbl_index == 1) {
2241 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2242 }
2243
2244 if (single_page) {
2245 pbl_count = 0;
2246 } else {
2247 pbl_count = root_pbl_index;
2248 }
2249 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2250 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2251 &nesmr->pbls_used, &nesmr->pbl_4k);
2252
2253 if (ret == 0) {
2254 nesmr->ibmr.rkey = stag;
2255 nesmr->ibmr.lkey = stag;
2256 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2257 ibmr = &nesmr->ibmr;
2258 } else {
2259 kfree(nesmr);
2260 ibmr = ERR_PTR(-ENOMEM);
2261 }
2262
2263 reg_phys_err:
2264 /* free the resources */
2265 if (root_pbl_index == 1) {
2266 /* single PBL case */
2267 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2268 } else {
2269 for (i=0; i<root_pbl_index; i++) {
2270 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2271 root_vpbl.leaf_vpbl[i].pbl_pbase);
2272 }
2273 kfree(root_vpbl.leaf_vpbl);
2274 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2275 root_vpbl.pbl_pbase);
2276 }
2277
2278 return ibmr;
2279 }
2280
2281
2282 /**
2283 * nes_get_dma_mr
2284 */
2285 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2286 {
2287 struct ib_phys_buf bl;
2288 u64 kva = 0;
2289
2290 nes_debug(NES_DBG_MR, "\n");
2291
2292 bl.size = (u64)0xffffffffffULL;
2293 bl.addr = 0;
2294 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2295 }
2296
2297
2298 /**
2299 * nes_reg_user_mr
2300 */
2301 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2302 u64 virt, int acc, struct ib_udata *udata)
2303 {
2304 u64 iova_start;
2305 __le64 *pbl;
2306 u64 region_length;
2307 dma_addr_t last_dma_addr = 0;
2308 dma_addr_t first_dma_addr = 0;
2309 struct nes_pd *nespd = to_nespd(pd);
2310 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2311 struct nes_device *nesdev = nesvnic->nesdev;
2312 struct nes_adapter *nesadapter = nesdev->nesadapter;
2313 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2314 struct ib_umem_chunk *chunk;
2315 struct nes_ucontext *nes_ucontext;
2316 struct nes_pbl *nespbl;
2317 struct nes_mr *nesmr;
2318 struct ib_umem *region;
2319 struct nes_mem_reg_req req;
2320 struct nes_vpbl vpbl;
2321 struct nes_root_vpbl root_vpbl;
2322 int nmap_index, page_index;
2323 int page_count = 0;
2324 int err, pbl_depth = 0;
2325 int chunk_pages;
2326 int ret;
2327 u32 stag;
2328 u32 stag_index = 0;
2329 u32 next_stag_index;
2330 u32 driver_key;
2331 u32 root_pbl_index = 0;
2332 u32 cur_pbl_index = 0;
2333 u32 skip_pages;
2334 u16 pbl_count;
2335 u8 single_page = 1;
2336 u8 stag_key;
2337
2338 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2339 if (IS_ERR(region)) {
2340 return (struct ib_mr *)region;
2341 }
2342
2343 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2344 " offset = %u, page size = %u.\n",
2345 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2346 region->offset, region->page_size);
2347
2348 skip_pages = ((u32)region->offset) >> 12;
2349
2350 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2351 return ERR_PTR(-EFAULT);
2352 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2353
2354 switch (req.reg_type) {
2355 case IWNES_MEMREG_TYPE_MEM:
2356 pbl_depth = 0;
2357 region_length = 0;
2358 vpbl.pbl_vbase = NULL;
2359 root_vpbl.pbl_vbase = NULL;
2360 root_vpbl.pbl_pbase = 0;
2361
2362 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2363 stag_key = (u8)next_stag_index;
2364
2365 driver_key = next_stag_index & 0x70000000;
2366
2367 next_stag_index >>= 8;
2368 next_stag_index %= nesadapter->max_mr;
2369
2370 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2371 nesadapter->max_mr, &stag_index, &next_stag_index);
2372 if (err) {
2373 ib_umem_release(region);
2374 return ERR_PTR(err);
2375 }
2376
2377 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2378 if (!nesmr) {
2379 ib_umem_release(region);
2380 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2381 return ERR_PTR(-ENOMEM);
2382 }
2383 nesmr->region = region;
2384
2385 list_for_each_entry(chunk, &region->chunk_list, list) {
2386 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2387 chunk->nents, chunk->nmap);
2388 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2389 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2390 ib_umem_release(region);
2391 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2392 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2393 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2394 ibmr = ERR_PTR(-EINVAL);
2395 kfree(nesmr);
2396 goto reg_user_mr_err;
2397 }
2398
2399 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2400 ib_umem_release(region);
2401 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2402 stag_index);
2403 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2404 ibmr = ERR_PTR(-EINVAL);
2405 kfree(nesmr);
2406 goto reg_user_mr_err;
2407 }
2408
2409 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2410 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2411 region_length -= skip_pages << 12;
2412 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2413 skip_pages = 0;
2414 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2415 goto enough_pages;
2416 if ((page_count&0x01FF) == 0) {
2417 if (page_count >= 1024 * 512) {
2418 ib_umem_release(region);
2419 nes_free_resource(nesadapter,
2420 nesadapter->allocated_mrs, stag_index);
2421 kfree(nesmr);
2422 ibmr = ERR_PTR(-E2BIG);
2423 goto reg_user_mr_err;
2424 }
2425 if (root_pbl_index == 1) {
2426 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2427 8192, &root_vpbl.pbl_pbase);
2428 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2429 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2430 if (!root_vpbl.pbl_vbase) {
2431 ib_umem_release(region);
2432 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2433 vpbl.pbl_pbase);
2434 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2435 stag_index);
2436 kfree(nesmr);
2437 ibmr = ERR_PTR(-ENOMEM);
2438 goto reg_user_mr_err;
2439 }
2440 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2441 GFP_KERNEL);
2442 if (!root_vpbl.leaf_vpbl) {
2443 ib_umem_release(region);
2444 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2445 root_vpbl.pbl_pbase);
2446 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2447 vpbl.pbl_pbase);
2448 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2449 stag_index);
2450 kfree(nesmr);
2451 ibmr = ERR_PTR(-ENOMEM);
2452 goto reg_user_mr_err;
2453 }
2454 root_vpbl.pbl_vbase[0].pa_low =
2455 cpu_to_le32((u32)vpbl.pbl_pbase);
2456 root_vpbl.pbl_vbase[0].pa_high =
2457 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2458 root_vpbl.leaf_vpbl[0] = vpbl;
2459 }
2460 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2461 &vpbl.pbl_pbase);
2462 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2463 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2464 if (!vpbl.pbl_vbase) {
2465 ib_umem_release(region);
2466 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2467 ibmr = ERR_PTR(-ENOMEM);
2468 kfree(nesmr);
2469 goto reg_user_mr_err;
2470 }
2471 if (1 <= root_pbl_index) {
2472 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2473 cpu_to_le32((u32)vpbl.pbl_pbase);
2474 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2475 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2476 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2477 }
2478 root_pbl_index++;
2479 cur_pbl_index = 0;
2480 }
2481 if (single_page) {
2482 if (page_count != 0) {
2483 if ((last_dma_addr+4096) !=
2484 (sg_dma_address(&chunk->page_list[nmap_index])+
2485 (page_index*4096)))
2486 single_page = 0;
2487 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2488 (page_index*4096);
2489 } else {
2490 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2491 (page_index*4096);
2492 last_dma_addr = first_dma_addr;
2493 }
2494 }
2495
2496 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2497 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2498 (page_index*4096)));
2499 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2500 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2501 (page_index*4096))) >> 32)));
2502 cur_pbl_index++;
2503 page_count++;
2504 }
2505 }
2506 }
2507 enough_pages:
2508 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2509 " stag_key=0x%08x\n",
2510 stag_index, driver_key, stag_key);
2511 stag = stag_index << 8;
2512 stag |= driver_key;
2513 stag += (u32)stag_key;
2514
2515 iova_start = virt;
2516 /* Make the leaf PBL the root if only one PBL */
2517 if (root_pbl_index == 1) {
2518 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2519 }
2520
2521 if (single_page) {
2522 pbl_count = 0;
2523 } else {
2524 pbl_count = root_pbl_index;
2525 first_dma_addr = 0;
2526 }
2527 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2528 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2529 stag, (unsigned int)iova_start,
2530 (unsigned int)region_length, stag_index,
2531 (unsigned long long)region->length, pbl_count);
2532 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2533 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2534 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2535
2536 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2537
2538 if (ret == 0) {
2539 nesmr->ibmr.rkey = stag;
2540 nesmr->ibmr.lkey = stag;
2541 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2542 ibmr = &nesmr->ibmr;
2543 } else {
2544 ib_umem_release(region);
2545 kfree(nesmr);
2546 ibmr = ERR_PTR(-ENOMEM);
2547 }
2548
2549 reg_user_mr_err:
2550 /* free the resources */
2551 if (root_pbl_index == 1) {
2552 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2553 vpbl.pbl_pbase);
2554 } else {
2555 for (page_index=0; page_index<root_pbl_index; page_index++) {
2556 pci_free_consistent(nesdev->pcidev, 4096,
2557 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2558 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2559 }
2560 kfree(root_vpbl.leaf_vpbl);
2561 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2562 root_vpbl.pbl_pbase);
2563 }
2564
2565 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2566
2567 return ibmr;
2568 case IWNES_MEMREG_TYPE_QP:
2569 case IWNES_MEMREG_TYPE_CQ:
2570 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2571 if (!nespbl) {
2572 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2573 ib_umem_release(region);
2574 return ERR_PTR(-ENOMEM);
2575 }
2576 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2577 if (!nesmr) {
2578 ib_umem_release(region);
2579 kfree(nespbl);
2580 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2581 return ERR_PTR(-ENOMEM);
2582 }
2583 nesmr->region = region;
2584 nes_ucontext = to_nesucontext(pd->uobject->context);
2585 pbl_depth = region->length >> 12;
2586 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2587 nespbl->pbl_size = pbl_depth*sizeof(u64);
2588 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2589 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2590 } else {
2591 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2592 }
2593
2594 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2595 nespbl->pbl_size, pbl_depth);
2596 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2597 &nespbl->pbl_pbase);
2598 if (!pbl) {
2599 ib_umem_release(region);
2600 kfree(nesmr);
2601 kfree(nespbl);
2602 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2603 return ERR_PTR(-ENOMEM);
2604 }
2605
2606 nespbl->pbl_vbase = (u64 *)pbl;
2607 nespbl->user_base = start;
2608 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2609 " pbl_vbase=%p user_base=0x%lx\n",
2610 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2611 (void *) nespbl->pbl_vbase, nespbl->user_base);
2612
2613 list_for_each_entry(chunk, &region->chunk_list, list) {
2614 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2615 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2616 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2617 nespbl->page = sg_page(&chunk->page_list[0]);
2618 for (page_index=0; page_index<chunk_pages; page_index++) {
2619 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2620 (sg_dma_address(&chunk->page_list[nmap_index])+
2621 (page_index*4096)));
2622 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2623 (sg_dma_address(&chunk->page_list[nmap_index])+
2624 (page_index*4096)))>>32);
2625 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2626 (unsigned long long)*pbl,
2627 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2628 pbl++;
2629 }
2630 }
2631 }
2632 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2633 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2634 } else {
2635 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2636 }
2637 nesmr->ibmr.rkey = -1;
2638 nesmr->ibmr.lkey = -1;
2639 nesmr->mode = req.reg_type;
2640 return &nesmr->ibmr;
2641 }
2642
2643 return ERR_PTR(-ENOSYS);
2644 }
2645
2646
2647 /**
2648 * nes_dereg_mr
2649 */
2650 static int nes_dereg_mr(struct ib_mr *ib_mr)
2651 {
2652 struct nes_mr *nesmr = to_nesmr(ib_mr);
2653 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2654 struct nes_device *nesdev = nesvnic->nesdev;
2655 struct nes_adapter *nesadapter = nesdev->nesadapter;
2656 struct nes_hw_cqp_wqe *cqp_wqe;
2657 struct nes_cqp_request *cqp_request;
2658 unsigned long flags;
2659 int ret;
2660 u16 major_code;
2661 u16 minor_code;
2662
2663 if (nesmr->region) {
2664 ib_umem_release(nesmr->region);
2665 }
2666 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2667 kfree(nesmr);
2668 return 0;
2669 }
2670
2671 /* Deallocate the region with the adapter */
2672
2673 cqp_request = nes_get_cqp_request(nesdev);
2674 if (cqp_request == NULL) {
2675 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2676 return -ENOMEM;
2677 }
2678 cqp_request->waiting = 1;
2679 cqp_wqe = &cqp_request->cqp_wqe;
2680
2681 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2682 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2683 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2684 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2685 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2686
2687 atomic_set(&cqp_request->refcount, 2);
2688 nes_post_cqp_request(nesdev, cqp_request);
2689
2690 /* Wait for CQP */
2691 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2692 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2693 NES_EVENT_TIMEOUT);
2694 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2695 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2696 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2697
2698 major_code = cqp_request->major_code;
2699 minor_code = cqp_request->minor_code;
2700
2701 nes_put_cqp_request(nesdev, cqp_request);
2702
2703 if (!ret) {
2704 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2705 " ib_mr=%p, rkey = 0x%08X\n",
2706 ib_mr, ib_mr->rkey);
2707 return -ETIME;
2708 } else if (major_code) {
2709 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2710 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2711 major_code, minor_code, ib_mr, ib_mr->rkey);
2712 return -EIO;
2713 }
2714
2715 if (nesmr->pbls_used != 0) {
2716 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2717 if (nesmr->pbl_4k) {
2718 nesadapter->free_4kpbl += nesmr->pbls_used;
2719 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2720 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2721 "exceeded the max(%u)\n",
2722 nesadapter->free_4kpbl,
2723 nesadapter->max_4kpbl);
2724 } else {
2725 nesadapter->free_256pbl += nesmr->pbls_used;
2726 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2727 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2728 "exceeded the max(%u)\n",
2729 nesadapter->free_256pbl,
2730 nesadapter->max_256pbl);
2731 }
2732 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2733 }
2734 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2735 (ib_mr->rkey & 0x0fffff00) >> 8);
2736
2737 kfree(nesmr);
2738
2739 return 0;
2740 }
2741
2742
2743 /**
2744 * show_rev
2745 */
2746 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2747 char *buf)
2748 {
2749 struct nes_ib_device *nesibdev =
2750 container_of(dev, struct nes_ib_device, ibdev.dev);
2751 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2752
2753 nes_debug(NES_DBG_INIT, "\n");
2754 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2755 }
2756
2757
2758 /**
2759 * show_fw_ver
2760 */
2761 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2762 char *buf)
2763 {
2764 struct nes_ib_device *nesibdev =
2765 container_of(dev, struct nes_ib_device, ibdev.dev);
2766 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2767
2768 nes_debug(NES_DBG_INIT, "\n");
2769 return sprintf(buf, "%u.%u\n",
2770 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2771 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2772 }
2773
2774
2775 /**
2776 * show_hca
2777 */
2778 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2779 char *buf)
2780 {
2781 nes_debug(NES_DBG_INIT, "\n");
2782 return sprintf(buf, "NES020\n");
2783 }
2784
2785
2786 /**
2787 * show_board
2788 */
2789 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2790 char *buf)
2791 {
2792 nes_debug(NES_DBG_INIT, "\n");
2793 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2794 }
2795
2796
2797 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2798 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2799 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2800 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2801
2802 static struct device_attribute *nes_dev_attributes[] = {
2803 &dev_attr_hw_rev,
2804 &dev_attr_fw_ver,
2805 &dev_attr_hca_type,
2806 &dev_attr_board_id
2807 };
2808
2809
2810 /**
2811 * nes_query_qp
2812 */
2813 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2814 int attr_mask, struct ib_qp_init_attr *init_attr)
2815 {
2816 struct nes_qp *nesqp = to_nesqp(ibqp);
2817
2818 nes_debug(NES_DBG_QP, "\n");
2819
2820 attr->qp_access_flags = 0;
2821 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2822 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2823 attr->cap.max_recv_sge = 1;
2824 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2825 attr->cap.max_inline_data = 0;
2826 else
2827 attr->cap.max_inline_data = 64;
2828
2829 init_attr->event_handler = nesqp->ibqp.event_handler;
2830 init_attr->qp_context = nesqp->ibqp.qp_context;
2831 init_attr->send_cq = nesqp->ibqp.send_cq;
2832 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2833 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2834 init_attr->cap = attr->cap;
2835
2836 return 0;
2837 }
2838
2839
2840 /**
2841 * nes_hw_modify_qp
2842 */
2843 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2844 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2845 {
2846 struct nes_hw_cqp_wqe *cqp_wqe;
2847 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2848 /* struct iw_cm_event cm_event; */
2849 struct nes_cqp_request *cqp_request;
2850 int ret;
2851 u16 major_code;
2852
2853 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2854 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2855
2856 cqp_request = nes_get_cqp_request(nesdev);
2857 if (cqp_request == NULL) {
2858 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2859 return -ENOMEM;
2860 }
2861 if (wait_completion) {
2862 cqp_request->waiting = 1;
2863 } else {
2864 cqp_request->waiting = 0;
2865 }
2866 cqp_wqe = &cqp_request->cqp_wqe;
2867
2868 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2869 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2870 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2871 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2872 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2873 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2874 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2875
2876 /* If sending a terminate message, fill in the length (in words) */
2877 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2878 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2879 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2880 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2881 }
2882
2883 atomic_set(&cqp_request->refcount, 2);
2884 nes_post_cqp_request(nesdev, cqp_request);
2885
2886 /* Wait for CQP */
2887 if (wait_completion) {
2888 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2889 nesqp->hwqp.qp_id); */
2890 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2891 NES_EVENT_TIMEOUT);
2892 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2893 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2894 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2895 major_code = cqp_request->major_code;
2896 if (major_code) {
2897 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2898 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2899 nesqp->hwqp.qp_id, cqp_request->major_code,
2900 cqp_request->minor_code, next_iwarp_state);
2901 }
2902
2903 nes_put_cqp_request(nesdev, cqp_request);
2904
2905 if (!ret)
2906 return -ETIME;
2907 else if (major_code)
2908 return -EIO;
2909 else
2910 return 0;
2911 } else {
2912 return 0;
2913 }
2914 }
2915
2916
2917 /**
2918 * nes_modify_qp
2919 */
2920 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2921 int attr_mask, struct ib_udata *udata)
2922 {
2923 struct nes_qp *nesqp = to_nesqp(ibqp);
2924 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2925 struct nes_device *nesdev = nesvnic->nesdev;
2926 /* u32 cqp_head; */
2927 /* u32 counter; */
2928 u32 next_iwarp_state = 0;
2929 int err;
2930 unsigned long qplockflags;
2931 int ret;
2932 u16 original_last_aeq;
2933 u8 issue_modify_qp = 0;
2934 u8 issue_disconnect = 0;
2935 u8 dont_wait = 0;
2936
2937 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2938 " iwarp_state=0x%X, refcount=%d\n",
2939 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2940 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2941
2942 spin_lock_irqsave(&nesqp->lock, qplockflags);
2943
2944 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2945 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2946 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2947 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2948
2949 if (attr_mask & IB_QP_STATE) {
2950 switch (attr->qp_state) {
2951 case IB_QPS_INIT:
2952 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2953 nesqp->hwqp.qp_id);
2954 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2955 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2956 return -EINVAL;
2957 }
2958 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2959 issue_modify_qp = 1;
2960 break;
2961 case IB_QPS_RTR:
2962 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2963 nesqp->hwqp.qp_id);
2964 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2965 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2966 return -EINVAL;
2967 }
2968 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2969 issue_modify_qp = 1;
2970 break;
2971 case IB_QPS_RTS:
2972 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2973 nesqp->hwqp.qp_id);
2974 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2975 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2976 return -EINVAL;
2977 }
2978 if (nesqp->cm_id == NULL) {
2979 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2980 nesqp->hwqp.qp_id );
2981 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2982 return -EINVAL;
2983 }
2984 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2985 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2986 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2987 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2988 issue_modify_qp = 1;
2989 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2990 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2991 nesqp->hte_added = 1;
2992 break;
2993 case IB_QPS_SQD:
2994 issue_modify_qp = 1;
2995 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2996 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2997 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2998 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2999 return 0;
3000 } else {
3001 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3002 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3003 " ignored due to current iWARP state\n",
3004 nesqp->hwqp.qp_id);
3005 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3006 return -EINVAL;
3007 }
3008 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3009 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3010 " already done based on hw state.\n",
3011 nesqp->hwqp.qp_id);
3012 issue_modify_qp = 0;
3013 }
3014 switch (nesqp->hw_iwarp_state) {
3015 case NES_AEQE_IWARP_STATE_CLOSING:
3016 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3017 case NES_AEQE_IWARP_STATE_TERMINATE:
3018 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3019 break;
3020 case NES_AEQE_IWARP_STATE_ERROR:
3021 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3022 break;
3023 default:
3024 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3025 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3026 break;
3027 }
3028 }
3029 break;
3030 case IB_QPS_SQE:
3031 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3032 nesqp->hwqp.qp_id);
3033 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3034 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3035 return -EINVAL;
3036 }
3037 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3038 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3039 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3040 issue_modify_qp = 1;
3041 break;
3042 case IB_QPS_ERR:
3043 case IB_QPS_RESET:
3044 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3045 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3046 return -EINVAL;
3047 }
3048 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3049 nesqp->hwqp.qp_id);
3050 if (nesqp->term_flags)
3051 del_timer(&nesqp->terminate_timer);
3052
3053 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3054 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3055 if (nesqp->hte_added) {
3056 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3057 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3058 nesqp->hte_added = 0;
3059 }
3060 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3061 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3062 next_iwarp_state |= NES_CQP_QP_RESET;
3063 } else {
3064 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3065 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3066 dont_wait = 1;
3067 }
3068 issue_modify_qp = 1;
3069 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3070 break;
3071 default:
3072 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3073 return -EINVAL;
3074 break;
3075 }
3076
3077 nesqp->ibqp_state = attr->qp_state;
3078 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3079 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3080 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3081 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3082 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3083 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3084 nesqp->iwarp_state);
3085 issue_disconnect = 1;
3086 } else {
3087 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3088 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3089 nesqp->iwarp_state);
3090 }
3091 }
3092
3093 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3094 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3095 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3096 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3097 issue_modify_qp = 1;
3098 }
3099 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3100 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3101 issue_modify_qp = 1;
3102 }
3103 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3104 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3105 issue_modify_qp = 1;
3106 }
3107 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3108 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3109 issue_modify_qp = 1;
3110 }
3111
3112 if (nesqp->user_mode) {
3113 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3114 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3115 issue_modify_qp = 1;
3116 }
3117 }
3118
3119 original_last_aeq = nesqp->last_aeq;
3120 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3121
3122 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3123
3124 ret = 0;
3125
3126
3127 if (issue_modify_qp) {
3128 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3129 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3130 if (ret)
3131 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3132 " failed for QP%u.\n",
3133 next_iwarp_state, nesqp->hwqp.qp_id);
3134
3135 }
3136
3137 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3138 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3139 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3140 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3141 original_last_aeq, nesqp->last_aeq);
3142 if ((!ret) ||
3143 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3144 (ret))) {
3145 if (dont_wait) {
3146 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3147 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3148 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3149 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3150 original_last_aeq, nesqp->last_aeq);
3151 /* this one is for the cm_disconnect thread */
3152 spin_lock_irqsave(&nesqp->lock, qplockflags);
3153 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3154 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3155 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3156 nes_cm_disconn(nesqp);
3157 } else {
3158 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3159 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3160 }
3161 } else {
3162 spin_lock_irqsave(&nesqp->lock, qplockflags);
3163 if (nesqp->cm_id) {
3164 /* These two are for the timer thread */
3165 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3166 nesqp->cm_id->add_ref(nesqp->cm_id);
3167 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3168 " need ae to finish up, original_last_aeq = 0x%04X."
3169 " last_aeq = 0x%04X, scheduling timer.\n",
3170 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3171 original_last_aeq, nesqp->last_aeq);
3172 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3173 }
3174 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3175 } else {
3176 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3177 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3178 " need ae to finish up, original_last_aeq = 0x%04X."
3179 " last_aeq = 0x%04X.\n",
3180 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3181 original_last_aeq, nesqp->last_aeq);
3182 }
3183 }
3184 } else {
3185 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3186 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3187 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3188 original_last_aeq, nesqp->last_aeq);
3189 }
3190 } else {
3191 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3192 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3193 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3194 original_last_aeq, nesqp->last_aeq);
3195 }
3196
3197 err = 0;
3198
3199 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3200 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3201
3202 return err;
3203 }
3204
3205
3206 /**
3207 * nes_muticast_attach
3208 */
3209 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3210 {
3211 nes_debug(NES_DBG_INIT, "\n");
3212 return -ENOSYS;
3213 }
3214
3215
3216 /**
3217 * nes_multicast_detach
3218 */
3219 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3220 {
3221 nes_debug(NES_DBG_INIT, "\n");
3222 return -ENOSYS;
3223 }
3224
3225
3226 /**
3227 * nes_process_mad
3228 */
3229 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3230 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3231 struct ib_mad *in_mad, struct ib_mad *out_mad)
3232 {
3233 nes_debug(NES_DBG_INIT, "\n");
3234 return -ENOSYS;
3235 }
3236
3237 static inline void
3238 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3239 {
3240 int sge_index;
3241 int total_payload_length = 0;
3242 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3243 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3244 ib_wr->sg_list[sge_index].addr);
3245 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3246 ib_wr->sg_list[sge_index].length);
3247 if (uselkey)
3248 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3249 (ib_wr->sg_list[sge_index].lkey));
3250 else
3251 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3252
3253 total_payload_length += ib_wr->sg_list[sge_index].length;
3254 }
3255 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3256 total_payload_length);
3257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3258 total_payload_length);
3259 }
3260
3261 /**
3262 * nes_post_send
3263 */
3264 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3265 struct ib_send_wr **bad_wr)
3266 {
3267 u64 u64temp;
3268 unsigned long flags = 0;
3269 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3270 struct nes_device *nesdev = nesvnic->nesdev;
3271 struct nes_qp *nesqp = to_nesqp(ibqp);
3272 struct nes_hw_qp_wqe *wqe;
3273 int err = 0;
3274 u32 qsize = nesqp->hwqp.sq_size;
3275 u32 head;
3276 u32 wqe_misc = 0;
3277 u32 wqe_count = 0;
3278 u32 counter;
3279
3280 if (nesqp->ibqp_state > IB_QPS_RTS) {
3281 err = -EINVAL;
3282 goto out;
3283 }
3284
3285 spin_lock_irqsave(&nesqp->lock, flags);
3286
3287 head = nesqp->hwqp.sq_head;
3288
3289 while (ib_wr) {
3290 /* Check for QP error */
3291 if (nesqp->term_flags) {
3292 err = -EINVAL;
3293 break;
3294 }
3295
3296 /* Check for SQ overflow */
3297 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3298 err = -ENOMEM;
3299 break;
3300 }
3301
3302 wqe = &nesqp->hwqp.sq_vbase[head];
3303 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3304 nesqp->hwqp.qp_id, wqe, head); */
3305 nes_fill_init_qp_wqe(wqe, nesqp, head);
3306 u64temp = (u64)(ib_wr->wr_id);
3307 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3308 u64temp);
3309 switch (ib_wr->opcode) {
3310 case IB_WR_SEND:
3311 case IB_WR_SEND_WITH_INV:
3312 if (IB_WR_SEND == ib_wr->opcode) {
3313 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3314 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3315 else
3316 wqe_misc = NES_IWARP_SQ_OP_SEND;
3317 } else {
3318 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3319 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3320 else
3321 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3322
3323 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3324 ib_wr->ex.invalidate_rkey);
3325 }
3326
3327 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3328 err = -EINVAL;
3329 break;
3330 }
3331
3332 if (ib_wr->send_flags & IB_SEND_FENCE)
3333 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3334
3335 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3336 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3337 (ib_wr->sg_list[0].length <= 64)) {
3338 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3339 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3340 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3341 ib_wr->sg_list[0].length);
3342 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3343 } else {
3344 fill_wqe_sg_send(wqe, ib_wr, 1);
3345 }
3346
3347 break;
3348 case IB_WR_RDMA_WRITE:
3349 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3350 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3351 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3352 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3353 err = -EINVAL;
3354 break;
3355 }
3356
3357 if (ib_wr->send_flags & IB_SEND_FENCE)
3358 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3359
3360 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3361 ib_wr->wr.rdma.rkey);
3362 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3363 ib_wr->wr.rdma.remote_addr);
3364
3365 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3366 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3367 (ib_wr->sg_list[0].length <= 64)) {
3368 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3369 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3370 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3371 ib_wr->sg_list[0].length);
3372 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3373 } else {
3374 fill_wqe_sg_send(wqe, ib_wr, 1);
3375 }
3376
3377 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3378 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3379 break;
3380 case IB_WR_RDMA_READ:
3381 case IB_WR_RDMA_READ_WITH_INV:
3382 /* iWARP only supports 1 sge for RDMA reads */
3383 if (ib_wr->num_sge > 1) {
3384 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3385 ib_wr->num_sge);
3386 err = -EINVAL;
3387 break;
3388 }
3389 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3390 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3391 } else {
3392 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3393 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3394 ib_wr->ex.invalidate_rkey);
3395 }
3396
3397 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3398 ib_wr->wr.rdma.remote_addr);
3399 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3400 ib_wr->wr.rdma.rkey);
3401 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3402 ib_wr->sg_list->length);
3403 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3404 ib_wr->sg_list->addr);
3405 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3406 ib_wr->sg_list->lkey);
3407 break;
3408 case IB_WR_LOCAL_INV:
3409 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3410 set_wqe_32bit_value(wqe->wqe_words,
3411 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3412 ib_wr->ex.invalidate_rkey);
3413 break;
3414 case IB_WR_FAST_REG_MR:
3415 {
3416 int i;
3417 int flags = ib_wr->wr.fast_reg.access_flags;
3418 struct nes_ib_fast_reg_page_list *pnesfrpl =
3419 container_of(ib_wr->wr.fast_reg.page_list,
3420 struct nes_ib_fast_reg_page_list,
3421 ibfrpl);
3422 u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
3423 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
3424
3425 if (ib_wr->wr.fast_reg.page_list_len >
3426 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3427 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3428 err = -EINVAL;
3429 break;
3430 }
3431 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3432 set_wqe_64bit_value(wqe->wqe_words,
3433 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3434 ib_wr->wr.fast_reg.iova_start);
3435 set_wqe_32bit_value(wqe->wqe_words,
3436 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3437 ib_wr->wr.fast_reg.length);
3438 set_wqe_32bit_value(wqe->wqe_words,
3439 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3440 ib_wr->wr.fast_reg.rkey);
3441 /* Set page size: */
3442 if (ib_wr->wr.fast_reg.page_shift == 12) {
3443 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3444 } else if (ib_wr->wr.fast_reg.page_shift == 21) {
3445 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3446 } else {
3447 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3448 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3449 err = -EINVAL;
3450 break;
3451 }
3452 /* Set access_flags */
3453 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3454 if (flags & IB_ACCESS_LOCAL_WRITE)
3455 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3456
3457 if (flags & IB_ACCESS_REMOTE_WRITE)
3458 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3459
3460 if (flags & IB_ACCESS_REMOTE_READ)
3461 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3462
3463 if (flags & IB_ACCESS_MW_BIND)
3464 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3465
3466 /* Fill in PBL info: */
3467 if (ib_wr->wr.fast_reg.page_list_len >
3468 pnesfrpl->ibfrpl.max_page_list_len) {
3469 nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
3470 " ib_wr=%p, value=%u, max=%u\n",
3471 ib_wr, ib_wr->wr.fast_reg.page_list_len,
3472 pnesfrpl->ibfrpl.max_page_list_len);
3473 err = -EINVAL;
3474 break;
3475 }
3476
3477 set_wqe_64bit_value(wqe->wqe_words,
3478 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3479 pnesfrpl->nes_wqe_pbl.paddr);
3480
3481 set_wqe_32bit_value(wqe->wqe_words,
3482 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3483 ib_wr->wr.fast_reg.page_list_len * 8);
3484
3485 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++)
3486 dst_page_list[i] = cpu_to_le64(src_page_list[i]);
3487
3488 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %p, "
3489 "length: %d, rkey: %0x, pgl_paddr: %p, "
3490 "page_list_len: %u, wqe_misc: %x\n",
3491 (void *)ib_wr->wr.fast_reg.iova_start,
3492 ib_wr->wr.fast_reg.length,
3493 ib_wr->wr.fast_reg.rkey,
3494 (void *)pnesfrpl->nes_wqe_pbl.paddr,
3495 ib_wr->wr.fast_reg.page_list_len,
3496 wqe_misc);
3497 break;
3498 }
3499 default:
3500 /* error */
3501 err = -EINVAL;
3502 break;
3503 }
3504
3505 if (err)
3506 break;
3507
3508 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3509 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3510
3511 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3512
3513 ib_wr = ib_wr->next;
3514 head++;
3515 wqe_count++;
3516 if (head >= qsize)
3517 head = 0;
3518
3519 }
3520
3521 nesqp->hwqp.sq_head = head;
3522 barrier();
3523 while (wqe_count) {
3524 counter = min(wqe_count, ((u32)255));
3525 wqe_count -= counter;
3526 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3527 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3528 }
3529
3530 spin_unlock_irqrestore(&nesqp->lock, flags);
3531
3532 out:
3533 if (err)
3534 *bad_wr = ib_wr;
3535 return err;
3536 }
3537
3538
3539 /**
3540 * nes_post_recv
3541 */
3542 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3543 struct ib_recv_wr **bad_wr)
3544 {
3545 u64 u64temp;
3546 unsigned long flags = 0;
3547 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3548 struct nes_device *nesdev = nesvnic->nesdev;
3549 struct nes_qp *nesqp = to_nesqp(ibqp);
3550 struct nes_hw_qp_wqe *wqe;
3551 int err = 0;
3552 int sge_index;
3553 u32 qsize = nesqp->hwqp.rq_size;
3554 u32 head;
3555 u32 wqe_count = 0;
3556 u32 counter;
3557 u32 total_payload_length;
3558
3559 if (nesqp->ibqp_state > IB_QPS_RTS) {
3560 err = -EINVAL;
3561 goto out;
3562 }
3563
3564 spin_lock_irqsave(&nesqp->lock, flags);
3565
3566 head = nesqp->hwqp.rq_head;
3567
3568 while (ib_wr) {
3569 /* Check for QP error */
3570 if (nesqp->term_flags) {
3571 err = -EINVAL;
3572 break;
3573 }
3574
3575 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3576 err = -EINVAL;
3577 break;
3578 }
3579 /* Check for RQ overflow */
3580 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3581 err = -ENOMEM;
3582 break;
3583 }
3584
3585 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3586 wqe = &nesqp->hwqp.rq_vbase[head];
3587
3588 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3589 nesqp->hwqp.qp_id, wqe, head); */
3590 nes_fill_init_qp_wqe(wqe, nesqp, head);
3591 u64temp = (u64)(ib_wr->wr_id);
3592 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3593 u64temp);
3594 total_payload_length = 0;
3595 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3596 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3597 ib_wr->sg_list[sge_index].addr);
3598 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3599 ib_wr->sg_list[sge_index].length);
3600 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3601 ib_wr->sg_list[sge_index].lkey);
3602
3603 total_payload_length += ib_wr->sg_list[sge_index].length;
3604 }
3605 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3606 total_payload_length);
3607
3608 ib_wr = ib_wr->next;
3609 head++;
3610 wqe_count++;
3611 if (head >= qsize)
3612 head = 0;
3613 }
3614
3615 nesqp->hwqp.rq_head = head;
3616 barrier();
3617 while (wqe_count) {
3618 counter = min(wqe_count, ((u32)255));
3619 wqe_count -= counter;
3620 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3621 }
3622
3623 spin_unlock_irqrestore(&nesqp->lock, flags);
3624
3625 out:
3626 if (err)
3627 *bad_wr = ib_wr;
3628 return err;
3629 }
3630
3631
3632 /**
3633 * nes_poll_cq
3634 */
3635 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3636 {
3637 u64 u64temp;
3638 u64 wrid;
3639 unsigned long flags = 0;
3640 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3641 struct nes_device *nesdev = nesvnic->nesdev;
3642 struct nes_cq *nescq = to_nescq(ibcq);
3643 struct nes_qp *nesqp;
3644 struct nes_hw_cqe cqe;
3645 u32 head;
3646 u32 wq_tail = 0;
3647 u32 cq_size;
3648 u32 cqe_count = 0;
3649 u32 wqe_index;
3650 u32 u32temp;
3651 u32 move_cq_head = 1;
3652 u32 err_code;
3653
3654 nes_debug(NES_DBG_CQ, "\n");
3655
3656 spin_lock_irqsave(&nescq->lock, flags);
3657
3658 head = nescq->hw_cq.cq_head;
3659 cq_size = nescq->hw_cq.cq_size;
3660
3661 while (cqe_count < num_entries) {
3662 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3663 NES_CQE_VALID) == 0)
3664 break;
3665
3666 /*
3667 * Make sure we read CQ entry contents *after*
3668 * we've checked the valid bit.
3669 */
3670 rmb();
3671
3672 cqe = nescq->hw_cq.cq_vbase[head];
3673 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3674 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3675 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3676 /* parse CQE, get completion context from WQE (either rq or sq) */
3677 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3678 ((u64)u32temp);
3679
3680 if (u64temp) {
3681 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3682 memset(entry, 0, sizeof *entry);
3683 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3684 entry->status = IB_WC_SUCCESS;
3685 } else {
3686 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3687 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3688 entry->status = err_code & 0x0000ffff;
3689
3690 /* The rest of the cqe's will be marked as flushed */
3691 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3692 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3693 NES_IWARP_CQE_MINOR_FLUSH);
3694 } else
3695 entry->status = IB_WC_WR_FLUSH_ERR;
3696 }
3697
3698 entry->qp = &nesqp->ibqp;
3699 entry->src_qp = nesqp->hwqp.qp_id;
3700
3701 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3702 if (nesqp->skip_lsmm) {
3703 nesqp->skip_lsmm = 0;
3704 nesqp->hwqp.sq_tail++;
3705 }
3706
3707 /* Working on a SQ Completion*/
3708 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3709 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3710 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3711 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3712 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3713 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3714
3715 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3716 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3717 case NES_IWARP_SQ_OP_RDMAW:
3718 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3719 entry->opcode = IB_WC_RDMA_WRITE;
3720 break;
3721 case NES_IWARP_SQ_OP_RDMAR:
3722 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3723 entry->opcode = IB_WC_RDMA_READ;
3724 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3725 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3726 break;
3727 case NES_IWARP_SQ_OP_SENDINV:
3728 case NES_IWARP_SQ_OP_SENDSEINV:
3729 case NES_IWARP_SQ_OP_SEND:
3730 case NES_IWARP_SQ_OP_SENDSE:
3731 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3732 entry->opcode = IB_WC_SEND;
3733 break;
3734 case NES_IWARP_SQ_OP_LOCINV:
3735 entry->opcode = IB_WR_LOCAL_INV;
3736 break;
3737 case NES_IWARP_SQ_OP_FAST_REG:
3738 entry->opcode = IB_WC_FAST_REG_MR;
3739 break;
3740 }
3741
3742 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3743 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3744 move_cq_head = 0;
3745 wq_tail = nesqp->hwqp.sq_tail;
3746 }
3747 } else {
3748 /* Working on a RQ Completion*/
3749 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3750 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3751 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3752 entry->opcode = IB_WC_RECV;
3753
3754 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3755 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3756 move_cq_head = 0;
3757 wq_tail = nesqp->hwqp.rq_tail;
3758 }
3759 }
3760
3761 entry->wr_id = wrid;
3762 entry++;
3763 cqe_count++;
3764 }
3765
3766 if (move_cq_head) {
3767 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3768 if (++head >= cq_size)
3769 head = 0;
3770 nescq->polled_completions++;
3771
3772 if ((nescq->polled_completions > (cq_size / 2)) ||
3773 (nescq->polled_completions == 255)) {
3774 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3775 " are pending %u of %u.\n",
3776 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3777 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3778 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3779 nescq->polled_completions = 0;
3780 }
3781 } else {
3782 /* Update the wqe index and set status to flush */
3783 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3784 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3785 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3786 cpu_to_le32(wqe_index);
3787 move_cq_head = 1; /* ready for next pass */
3788 }
3789 }
3790
3791 if (nescq->polled_completions) {
3792 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3793 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3794 nescq->polled_completions = 0;
3795 }
3796
3797 nescq->hw_cq.cq_head = head;
3798 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3799 cqe_count, nescq->hw_cq.cq_number);
3800
3801 spin_unlock_irqrestore(&nescq->lock, flags);
3802
3803 return cqe_count;
3804 }
3805
3806
3807 /**
3808 * nes_req_notify_cq
3809 */
3810 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3811 {
3812 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3813 struct nes_device *nesdev = nesvnic->nesdev;
3814 struct nes_cq *nescq = to_nescq(ibcq);
3815 u32 cq_arm;
3816
3817 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3818 nescq->hw_cq.cq_number);
3819
3820 cq_arm = nescq->hw_cq.cq_number;
3821 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3822 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3823 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3824 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3825 else
3826 return -EINVAL;
3827
3828 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3829 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3830
3831 return 0;
3832 }
3833
3834
3835 /**
3836 * nes_init_ofa_device
3837 */
3838 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3839 {
3840 struct nes_ib_device *nesibdev;
3841 struct nes_vnic *nesvnic = netdev_priv(netdev);
3842 struct nes_device *nesdev = nesvnic->nesdev;
3843
3844 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3845 if (nesibdev == NULL) {
3846 return NULL;
3847 }
3848 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3849 nesibdev->ibdev.owner = THIS_MODULE;
3850
3851 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3852 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3853 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3854
3855 nesibdev->ibdev.uverbs_cmd_mask =
3856 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3857 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3858 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3859 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3860 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3861 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3862 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3863 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3864 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3865 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3866 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3867 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3868 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3869 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3870 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3871 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3872 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3873 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3874 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3875 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3876 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3877 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3878
3879 nesibdev->ibdev.phys_port_cnt = 1;
3880 nesibdev->ibdev.num_comp_vectors = 1;
3881 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3882 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3883 nesibdev->ibdev.query_device = nes_query_device;
3884 nesibdev->ibdev.query_port = nes_query_port;
3885 nesibdev->ibdev.modify_port = nes_modify_port;
3886 nesibdev->ibdev.query_pkey = nes_query_pkey;
3887 nesibdev->ibdev.query_gid = nes_query_gid;
3888 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3889 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3890 nesibdev->ibdev.mmap = nes_mmap;
3891 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3892 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3893 nesibdev->ibdev.create_ah = nes_create_ah;
3894 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3895 nesibdev->ibdev.create_qp = nes_create_qp;
3896 nesibdev->ibdev.modify_qp = nes_modify_qp;
3897 nesibdev->ibdev.query_qp = nes_query_qp;
3898 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3899 nesibdev->ibdev.create_cq = nes_create_cq;
3900 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3901 nesibdev->ibdev.poll_cq = nes_poll_cq;
3902 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3903 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3904 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3905 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3906 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3907 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3908 nesibdev->ibdev.bind_mw = nes_bind_mw;
3909
3910 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr;
3911 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
3912 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
3913
3914 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3915 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3916 nesibdev->ibdev.process_mad = nes_process_mad;
3917
3918 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3919 nesibdev->ibdev.post_send = nes_post_send;
3920 nesibdev->ibdev.post_recv = nes_post_recv;
3921
3922 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3923 if (nesibdev->ibdev.iwcm == NULL) {
3924 ib_dealloc_device(&nesibdev->ibdev);
3925 return NULL;
3926 }
3927 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3928 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3929 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3930 nesibdev->ibdev.iwcm->connect = nes_connect;
3931 nesibdev->ibdev.iwcm->accept = nes_accept;
3932 nesibdev->ibdev.iwcm->reject = nes_reject;
3933 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3934 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3935
3936 return nesibdev;
3937 }
3938
3939
3940 /**
3941 * nes_destroy_ofa_device
3942 */
3943 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3944 {
3945 if (nesibdev == NULL)
3946 return;
3947
3948 nes_unregister_ofa_device(nesibdev);
3949
3950 kfree(nesibdev->ibdev.iwcm);
3951 ib_dealloc_device(&nesibdev->ibdev);
3952 }
3953
3954
3955 /**
3956 * nes_register_ofa_device
3957 */
3958 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3959 {
3960 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3961 struct nes_device *nesdev = nesvnic->nesdev;
3962 struct nes_adapter *nesadapter = nesdev->nesadapter;
3963 int i, ret;
3964
3965 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3966 if (ret) {
3967 return ret;
3968 }
3969
3970 /* Get the resources allocated to this device */
3971 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3972 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3973 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3974 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3975
3976 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3977 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3978 if (ret) {
3979 while (i > 0) {
3980 i--;
3981 device_remove_file(&nesibdev->ibdev.dev,
3982 nes_dev_attributes[i]);
3983 }
3984 ib_unregister_device(&nesibdev->ibdev);
3985 return ret;
3986 }
3987 }
3988
3989 nesvnic->of_device_registered = 1;
3990
3991 return 0;
3992 }
3993
3994
3995 /**
3996 * nes_unregister_ofa_device
3997 */
3998 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3999 {
4000 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4001 int i;
4002
4003 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4004 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4005 }
4006
4007 if (nesvnic->of_device_registered) {
4008 ib_unregister_device(&nesibdev->ibdev);
4009 }
4010
4011 nesvnic->of_device_registered = 0;
4012 }
kernel source for telekom puls (alcatel/mediatek)