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EDAC: i7core, sb_edac: Don't return NOTIFY_BAD from mce_decoder callback
[linux/fpc-iii.git] / drivers / infiniband / hw / nes / nes_verbs.c
blobfba69a39a7eb496cb80ae819c231917e48203c17
1 /*
2 * Copyright (c) 2006 - 2011 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 static int nes_dereg_mr(struct ib_mr *ib_mr);
55
56 /**
57 * nes_alloc_mw
58 */
59 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type,
60 struct ib_udata *udata)
61 {
62 struct nes_pd *nespd = to_nespd(ibpd);
63 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
64 struct nes_device *nesdev = nesvnic->nesdev;
65 struct nes_adapter *nesadapter = nesdev->nesadapter;
66 struct nes_cqp_request *cqp_request;
67 struct nes_mr *nesmr;
68 struct ib_mw *ibmw;
69 struct nes_hw_cqp_wqe *cqp_wqe;
70 int ret;
71 u32 stag;
72 u32 stag_index = 0;
73 u32 next_stag_index = 0;
74 u32 driver_key = 0;
75 u8 stag_key = 0;
76
77 if (type != IB_MW_TYPE_1)
78 return ERR_PTR(-EINVAL);
79
80 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
81 stag_key = (u8)next_stag_index;
82
83 driver_key = 0;
84
85 next_stag_index >>= 8;
86 next_stag_index %= nesadapter->max_mr;
87
88 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
89 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_MW);
90 if (ret) {
91 return ERR_PTR(ret);
92 }
93
94 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
95 if (!nesmr) {
96 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
97 return ERR_PTR(-ENOMEM);
98 }
99
100 stag = stag_index << 8;
101 stag |= driver_key;
102 stag += (u32)stag_key;
103
104 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
105 stag, stag_index);
106
107 /* Register the region with the adapter */
108 cqp_request = nes_get_cqp_request(nesdev);
109 if (cqp_request == NULL) {
110 kfree(nesmr);
111 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
112 return ERR_PTR(-ENOMEM);
113 }
114
115 cqp_request->waiting = 1;
116 cqp_wqe = &cqp_request->cqp_wqe;
117
118 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
119 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
120 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
121 NES_CQP_STAG_REM_ACC_EN);
122
123 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
124 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
125 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
126
127 atomic_set(&cqp_request->refcount, 2);
128 nes_post_cqp_request(nesdev, cqp_request);
129
130 /* Wait for CQP */
131 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
132 NES_EVENT_TIMEOUT);
133 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
134 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
135 stag, ret, cqp_request->major_code, cqp_request->minor_code);
136 if ((!ret) || (cqp_request->major_code)) {
137 nes_put_cqp_request(nesdev, cqp_request);
138 kfree(nesmr);
139 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
140 if (!ret) {
141 return ERR_PTR(-ETIME);
142 } else {
143 return ERR_PTR(-ENOMEM);
144 }
145 }
146 nes_put_cqp_request(nesdev, cqp_request);
147
148 nesmr->ibmw.rkey = stag;
149 nesmr->mode = IWNES_MEMREG_TYPE_MW;
150 ibmw = &nesmr->ibmw;
151 nesmr->pbl_4k = 0;
152 nesmr->pbls_used = 0;
153
154 return ibmw;
155 }
156
157
158 /**
159 * nes_dealloc_mw
160 */
161 static int nes_dealloc_mw(struct ib_mw *ibmw)
162 {
163 struct nes_mr *nesmr = to_nesmw(ibmw);
164 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
165 struct nes_device *nesdev = nesvnic->nesdev;
166 struct nes_adapter *nesadapter = nesdev->nesadapter;
167 struct nes_hw_cqp_wqe *cqp_wqe;
168 struct nes_cqp_request *cqp_request;
169 int err = 0;
170 int ret;
171
172 /* Deallocate the window with the adapter */
173 cqp_request = nes_get_cqp_request(nesdev);
174 if (cqp_request == NULL) {
175 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
176 return -ENOMEM;
177 }
178 cqp_request->waiting = 1;
179 cqp_wqe = &cqp_request->cqp_wqe;
180 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
181 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
182 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
183
184 atomic_set(&cqp_request->refcount, 2);
185 nes_post_cqp_request(nesdev, cqp_request);
186
187 /* Wait for CQP */
188 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
189 ibmw->rkey);
190 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
191 NES_EVENT_TIMEOUT);
192 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
193 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
194 ret, cqp_request->major_code, cqp_request->minor_code);
195 if (!ret)
196 err = -ETIME;
197 else if (cqp_request->major_code)
198 err = -EIO;
199
200 nes_put_cqp_request(nesdev, cqp_request);
201
202 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
203 (ibmw->rkey & 0x0fffff00) >> 8);
204 kfree(nesmr);
205
206 return err;
207 }
208
209
210 /*
211 * nes_alloc_fast_mr
212 */
213 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
214 u32 stag, u32 page_count)
215 {
216 struct nes_hw_cqp_wqe *cqp_wqe;
217 struct nes_cqp_request *cqp_request;
218 unsigned long flags;
219 int ret;
220 struct nes_adapter *nesadapter = nesdev->nesadapter;
221 u32 opcode = 0;
222 u16 major_code;
223 u64 region_length = page_count * PAGE_SIZE;
224
225
226 cqp_request = nes_get_cqp_request(nesdev);
227 if (cqp_request == NULL) {
228 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
229 return -ENOMEM;
230 }
231 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
232 "region_length = %llu\n",
233 page_count, region_length);
234 cqp_request->waiting = 1;
235 cqp_wqe = &cqp_request->cqp_wqe;
236
237 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
238 if (nesadapter->free_4kpbl > 0) {
239 nesadapter->free_4kpbl--;
240 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
241 } else {
242 /* No 4kpbl's available: */
243 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
244 nes_debug(NES_DBG_MR, "Out of Pbls\n");
245 nes_free_cqp_request(nesdev, cqp_request);
246 return -ENOMEM;
247 }
248
249 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
250 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
251 NES_CQP_STAG_REM_ACC_EN;
252 /*
253 * The current OFED API does not support the zero based TO option.
254 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
255 * the API does not support that ability to have the MR set for local
256 * access only when created and not allow the SQ op to override. Given
257 * this the remote enable must be set here.
258 */
259
260 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
261 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
262 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
263
264 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
265 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
266 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
267 cpu_to_le32(nespd->pd_id & 0x00007fff);
268
269 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
270 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
271 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
272 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
273 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
274 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
275 barrier();
276
277 atomic_set(&cqp_request->refcount, 2);
278 nes_post_cqp_request(nesdev, cqp_request);
279
280 /* Wait for CQP */
281 ret = wait_event_timeout(cqp_request->waitq,
282 (0 != cqp_request->request_done),
283 NES_EVENT_TIMEOUT);
284
285 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
286 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
287 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
288 cqp_request->minor_code);
289 major_code = cqp_request->major_code;
290 nes_put_cqp_request(nesdev, cqp_request);
291
292 if (!ret || major_code) {
293 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
294 nesadapter->free_4kpbl++;
295 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
296 }
297
298 if (!ret)
299 return -ETIME;
300 else if (major_code)
301 return -EIO;
302 return 0;
303 }
304
305 /*
306 * nes_alloc_mr
307 */
308 static struct ib_mr *nes_alloc_mr(struct ib_pd *ibpd,
309 enum ib_mr_type mr_type,
310 u32 max_num_sg)
311 {
312 struct nes_pd *nespd = to_nespd(ibpd);
313 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
314 struct nes_device *nesdev = nesvnic->nesdev;
315 struct nes_adapter *nesadapter = nesdev->nesadapter;
316
317 u32 next_stag_index;
318 u8 stag_key = 0;
319 u32 driver_key = 0;
320 int err = 0;
321 u32 stag_index = 0;
322 struct nes_mr *nesmr;
323 u32 stag;
324 int ret;
325 struct ib_mr *ibmr;
326
327 if (mr_type != IB_MR_TYPE_MEM_REG)
328 return ERR_PTR(-EINVAL);
329
330 if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
331 return ERR_PTR(-E2BIG);
332
333 /*
334 * Note: Set to always use a fixed length single page entry PBL. This is to allow
335 * for the fast_reg_mr operation to always know the size of the PBL.
336 */
337 if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
338 return ERR_PTR(-E2BIG);
339
340 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
341 stag_key = (u8)next_stag_index;
342 next_stag_index >>= 8;
343 next_stag_index %= nesadapter->max_mr;
344
345 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
346 nesadapter->max_mr, &stag_index,
347 &next_stag_index, NES_RESOURCE_FAST_MR);
348 if (err)
349 return ERR_PTR(err);
350
351 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
352 if (!nesmr) {
353 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
354 return ERR_PTR(-ENOMEM);
355 }
356
357 stag = stag_index << 8;
358 stag |= driver_key;
359 stag += (u32)stag_key;
360
361 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
362 stag, stag_index);
363
364 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_num_sg);
365
366 if (ret == 0) {
367 nesmr->ibmr.rkey = stag;
368 nesmr->ibmr.lkey = stag;
369 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
370 ibmr = &nesmr->ibmr;
371 } else {
372 kfree(nesmr);
373 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
374 return ERR_PTR(-ENOMEM);
375 }
376
377 nesmr->pages = pci_alloc_consistent(nesdev->pcidev,
378 max_num_sg * sizeof(u64),
379 &nesmr->paddr);
380 if (!nesmr->paddr)
381 goto err;
382
383 nesmr->max_pages = max_num_sg;
384
385 return ibmr;
386
387 err:
388 nes_dereg_mr(ibmr);
389
390 return ERR_PTR(-ENOMEM);
391 }
392
393 static int nes_set_page(struct ib_mr *ibmr, u64 addr)
394 {
395 struct nes_mr *nesmr = to_nesmr(ibmr);
396
397 if (unlikely(nesmr->npages == nesmr->max_pages))
398 return -ENOMEM;
399
400 nesmr->pages[nesmr->npages++] = cpu_to_le64(addr);
401
402 return 0;
403 }
404
405 static int nes_map_mr_sg(struct ib_mr *ibmr,
406 struct scatterlist *sg,
407 int sg_nents)
408 {
409 struct nes_mr *nesmr = to_nesmr(ibmr);
410
411 nesmr->npages = 0;
412
413 return ib_sg_to_pages(ibmr, sg, sg_nents, nes_set_page);
414 }
415
416 /**
417 * nes_query_device
418 */
419 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
420 struct ib_udata *uhw)
421 {
422 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
423 struct nes_device *nesdev = nesvnic->nesdev;
424 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
425
426 if (uhw->inlen || uhw->outlen)
427 return -EINVAL;
428
429 memset(props, 0, sizeof(*props));
430 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
431
432 props->fw_ver = nesdev->nesadapter->firmware_version;
433 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
434 props->vendor_id = nesdev->nesadapter->vendor_id;
435 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
436 props->hw_ver = nesdev->nesadapter->hw_rev;
437 props->max_mr_size = 0x80000000;
438 props->max_qp = nesibdev->max_qp;
439 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
440 props->max_sge = nesdev->nesadapter->max_sge;
441 props->max_cq = nesibdev->max_cq;
442 props->max_cqe = nesdev->nesadapter->max_cqe;
443 props->max_mr = nesibdev->max_mr;
444 props->max_mw = nesibdev->max_mr;
445 props->max_pd = nesibdev->max_pd;
446 props->max_sge_rd = 1;
447 switch (nesdev->nesadapter->max_irrq_wr) {
448 case 0:
449 props->max_qp_rd_atom = 2;
450 break;
451 case 1:
452 props->max_qp_rd_atom = 8;
453 break;
454 case 2:
455 props->max_qp_rd_atom = 32;
456 break;
457 case 3:
458 props->max_qp_rd_atom = 64;
459 break;
460 default:
461 props->max_qp_rd_atom = 0;
462 }
463 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
464 props->atomic_cap = IB_ATOMIC_NONE;
465 props->max_map_per_fmr = 1;
466
467 return 0;
468 }
469
470
471 /**
472 * nes_query_port
473 */
474 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
475 {
476 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
477 struct net_device *netdev = nesvnic->netdev;
478
479 memset(props, 0, sizeof(*props));
480
481 props->max_mtu = IB_MTU_4096;
482
483 if (netdev->mtu >= 4096)
484 props->active_mtu = IB_MTU_4096;
485 else if (netdev->mtu >= 2048)
486 props->active_mtu = IB_MTU_2048;
487 else if (netdev->mtu >= 1024)
488 props->active_mtu = IB_MTU_1024;
489 else if (netdev->mtu >= 512)
490 props->active_mtu = IB_MTU_512;
491 else
492 props->active_mtu = IB_MTU_256;
493
494 props->lid = 1;
495 props->lmc = 0;
496 props->sm_lid = 0;
497 props->sm_sl = 0;
498 if (netif_queue_stopped(netdev))
499 props->state = IB_PORT_DOWN;
500 else if (nesvnic->linkup)
501 props->state = IB_PORT_ACTIVE;
502 else
503 props->state = IB_PORT_DOWN;
504 props->phys_state = 0;
505 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
506 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
507 props->gid_tbl_len = 1;
508 props->pkey_tbl_len = 1;
509 props->qkey_viol_cntr = 0;
510 props->active_width = IB_WIDTH_4X;
511 props->active_speed = IB_SPEED_SDR;
512 props->max_msg_sz = 0x80000000;
513
514 return 0;
515 }
516
517 /**
518 * nes_query_pkey
519 */
520 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
521 {
522 *pkey = 0;
523 return 0;
524 }
525
526
527 /**
528 * nes_query_gid
529 */
530 static int nes_query_gid(struct ib_device *ibdev, u8 port,
531 int index, union ib_gid *gid)
532 {
533 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
534
535 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
536 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
537
538 return 0;
539 }
540
541
542 /**
543 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
544 * of all objects associated with a particular user-mode client.
545 */
546 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
547 struct ib_udata *udata)
548 {
549 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
550 struct nes_device *nesdev = nesvnic->nesdev;
551 struct nes_adapter *nesadapter = nesdev->nesadapter;
552 struct nes_alloc_ucontext_req req;
553 struct nes_alloc_ucontext_resp uresp;
554 struct nes_ucontext *nes_ucontext;
555 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
556
557
558 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
559 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
560 return ERR_PTR(-EINVAL);
561 }
562
563 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
564 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
565 req.userspace_ver, NES_ABI_USERSPACE_VER);
566 return ERR_PTR(-EINVAL);
567 }
568
569
570 memset(&uresp, 0, sizeof uresp);
571
572 uresp.max_qps = nesibdev->max_qp;
573 uresp.max_pds = nesibdev->max_pd;
574 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
575 uresp.virtwq = nesadapter->virtwq;
576 uresp.kernel_ver = NES_ABI_KERNEL_VER;
577
578 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
579 if (!nes_ucontext)
580 return ERR_PTR(-ENOMEM);
581
582 nes_ucontext->nesdev = nesdev;
583 nes_ucontext->mmap_wq_offset = uresp.max_pds;
584 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
585 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
586 PAGE_SIZE;
587
588
589 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
590 kfree(nes_ucontext);
591 return ERR_PTR(-EFAULT);
592 }
593
594 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
595 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
596 atomic_set(&nes_ucontext->usecnt, 1);
597 return &nes_ucontext->ibucontext;
598 }
599
600
601 /**
602 * nes_dealloc_ucontext
603 */
604 static int nes_dealloc_ucontext(struct ib_ucontext *context)
605 {
606 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
607 /* struct nes_device *nesdev = nesvnic->nesdev; */
608 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
609
610 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
611 return 0;
612 kfree(nes_ucontext);
613 return 0;
614 }
615
616
617 /**
618 * nes_mmap
619 */
620 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
621 {
622 unsigned long index;
623 struct nes_vnic *nesvnic = to_nesvnic(context->device);
624 struct nes_device *nesdev = nesvnic->nesdev;
625 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
626 struct nes_ucontext *nes_ucontext;
627 struct nes_qp *nesqp;
628
629 nes_ucontext = to_nesucontext(context);
630
631
632 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
633 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
634 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
635 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
636 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
637 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
638 return -EFAULT;
639 }
640 nesqp = nes_ucontext->mmap_nesqp[index];
641 if (nesqp == NULL) {
642 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
643 return -EFAULT;
644 }
645 if (remap_pfn_range(vma, vma->vm_start,
646 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
647 vma->vm_end - vma->vm_start,
648 vma->vm_page_prot)) {
649 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
650 return -EAGAIN;
651 }
652 vma->vm_private_data = nesqp;
653 return 0;
654 } else {
655 index = vma->vm_pgoff;
656 if (!test_bit(index, nes_ucontext->allocated_doorbells))
657 return -EFAULT;
658
659 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
660 if (io_remap_pfn_range(vma, vma->vm_start,
661 (nesdev->doorbell_start +
662 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
663 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
664 return -EAGAIN;
665 vma->vm_private_data = nes_ucontext;
666 return 0;
667 }
668
669 return -ENOSYS;
670 }
671
672
673 /**
674 * nes_alloc_pd
675 */
676 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
677 struct ib_ucontext *context, struct ib_udata *udata)
678 {
679 struct nes_pd *nespd;
680 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
681 struct nes_device *nesdev = nesvnic->nesdev;
682 struct nes_adapter *nesadapter = nesdev->nesadapter;
683 struct nes_ucontext *nesucontext;
684 struct nes_alloc_pd_resp uresp;
685 u32 pd_num = 0;
686 int err;
687
688 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
689 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
690 netdev_refcnt_read(nesvnic->netdev));
691
692 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
693 nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
694 if (err) {
695 return ERR_PTR(err);
696 }
697
698 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
699 if (!nespd) {
700 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
701 return ERR_PTR(-ENOMEM);
702 }
703
704 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
705 nespd, nesvnic->nesibdev->ibdev.name);
706
707 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
708
709 if (context) {
710 nesucontext = to_nesucontext(context);
711 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
712 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
713 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
714 nespd->mmap_db_index, nespd->pd_id);
715 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
716 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
717 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
718 kfree(nespd);
719 return ERR_PTR(-ENOMEM);
720 }
721
722 uresp.pd_id = nespd->pd_id;
723 uresp.mmap_db_index = nespd->mmap_db_index;
724 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
725 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
726 kfree(nespd);
727 return ERR_PTR(-EFAULT);
728 }
729
730 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
731 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
732 nesucontext->first_free_db = nespd->mmap_db_index + 1;
733 }
734
735 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
736 return &nespd->ibpd;
737 }
738
739
740 /**
741 * nes_dealloc_pd
742 */
743 static int nes_dealloc_pd(struct ib_pd *ibpd)
744 {
745 struct nes_ucontext *nesucontext;
746 struct nes_pd *nespd = to_nespd(ibpd);
747 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
748 struct nes_device *nesdev = nesvnic->nesdev;
749 struct nes_adapter *nesadapter = nesdev->nesadapter;
750
751 if ((ibpd->uobject) && (ibpd->uobject->context)) {
752 nesucontext = to_nesucontext(ibpd->uobject->context);
753 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
754 nespd->mmap_db_index);
755 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
756 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
757 if (nesucontext->first_free_db > nespd->mmap_db_index) {
758 nesucontext->first_free_db = nespd->mmap_db_index;
759 }
760 }
761
762 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
763 nespd->pd_id, nespd);
764 nes_free_resource(nesadapter, nesadapter->allocated_pds,
765 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
766 kfree(nespd);
767
768 return 0;
769 }
770
771
772 /**
773 * nes_create_ah
774 */
775 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
776 {
777 return ERR_PTR(-ENOSYS);
778 }
779
780
781 /**
782 * nes_destroy_ah
783 */
784 static int nes_destroy_ah(struct ib_ah *ah)
785 {
786 return -ENOSYS;
787 }
788
789
790 /**
791 * nes_get_encoded_size
792 */
793 static inline u8 nes_get_encoded_size(int *size)
794 {
795 u8 encoded_size = 0;
796 if (*size <= 32) {
797 *size = 32;
798 encoded_size = 1;
799 } else if (*size <= 128) {
800 *size = 128;
801 encoded_size = 2;
802 } else if (*size <= 512) {
803 *size = 512;
804 encoded_size = 3;
805 }
806 return (encoded_size);
807 }
808
809
810
811 /**
812 * nes_setup_virt_qp
813 */
814 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
815 struct nes_vnic *nesvnic, int sq_size, int rq_size)
816 {
817 unsigned long flags;
818 void *mem;
819 __le64 *pbl = NULL;
820 __le64 *tpbl;
821 __le64 *pblbuffer;
822 struct nes_device *nesdev = nesvnic->nesdev;
823 struct nes_adapter *nesadapter = nesdev->nesadapter;
824 u32 pbl_entries;
825 u8 rq_pbl_entries;
826 u8 sq_pbl_entries;
827
828 pbl_entries = nespbl->pbl_size >> 3;
829 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
830 nespbl->pbl_size, pbl_entries,
831 (void *)nespbl->pbl_vbase,
832 (unsigned long) nespbl->pbl_pbase);
833 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
834 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
835 /* the first pbl to be fro the rq_vbase... */
836 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
837 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
838 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
839 if (!nespbl->page) {
840 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
841 kfree(nespbl);
842 return -ENOMEM;
843 }
844
845 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
846 nesqp->page = nespbl->page;
847 if (!nesqp->hwqp.sq_vbase) {
848 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
849 kfree(nespbl);
850 return -ENOMEM;
851 }
852
853 /* Now to get to sq.. we need to calculate how many */
854 /* PBL entries were used by the rq.. */
855 pbl += sq_pbl_entries;
856 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
857 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
858 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
859
860 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
861 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
862 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
863 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
864 if (!nesadapter->free_256pbl) {
865 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
866 nespbl->pbl_pbase);
867 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
868 kunmap(nesqp->page);
869 kfree(nespbl);
870 return -ENOMEM;
871 }
872 nesadapter->free_256pbl--;
873 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
874
875 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
876 pblbuffer = nesqp->pbl_vbase;
877 if (!nesqp->pbl_vbase) {
878 /* memory allocated during nes_reg_user_mr() */
879 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
880 nespbl->pbl_pbase);
881 kfree(nespbl);
882 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
883 nesadapter->free_256pbl++;
884 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
885 kunmap(nesqp->page);
886 return -ENOMEM;
887 }
888 memset(nesqp->pbl_vbase, 0, 256);
889 /* fill in the page address in the pbl buffer.. */
890 tpbl = pblbuffer + 16;
891 pbl = (__le64 *)nespbl->pbl_vbase;
892 while (sq_pbl_entries--)
893 *tpbl++ = *pbl++;
894 tpbl = pblbuffer;
895 while (rq_pbl_entries--)
896 *tpbl++ = *pbl++;
897
898 /* done with memory allocated during nes_reg_user_mr() */
899 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
900 nespbl->pbl_pbase);
901 kfree(nespbl);
902
903 nesqp->qp_mem_size =
904 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
905 /* Round up to a multiple of a page */
906 nesqp->qp_mem_size += PAGE_SIZE - 1;
907 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
908
909 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
910 &nesqp->hwqp.q2_pbase);
911
912 if (!mem) {
913 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
914 nesqp->pbl_vbase = NULL;
915 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
916 nesadapter->free_256pbl++;
917 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
918 kunmap(nesqp->page);
919 return -ENOMEM;
920 }
921 nesqp->sq_kmapped = 1;
922 nesqp->hwqp.q2_vbase = mem;
923 mem += 256;
924 memset(nesqp->hwqp.q2_vbase, 0, 256);
925 nesqp->nesqp_context = mem;
926 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
927 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
928
929 return 0;
930 }
931
932
933 /**
934 * nes_setup_mmap_qp
935 */
936 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
937 int sq_size, int rq_size)
938 {
939 void *mem;
940 struct nes_device *nesdev = nesvnic->nesdev;
941
942 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
943 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
944 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
945 256; /* this is Q2 */
946 /* Round up to a multiple of a page */
947 nesqp->qp_mem_size += PAGE_SIZE - 1;
948 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
949
950 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
951 &nesqp->hwqp.sq_pbase);
952 if (!mem)
953 return -ENOMEM;
954 nes_debug(NES_DBG_QP, "PCI consistent memory for "
955 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
956 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
957
958 memset(mem, 0, nesqp->qp_mem_size);
959
960 nesqp->hwqp.sq_vbase = mem;
961 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
962
963 nesqp->hwqp.rq_vbase = mem;
964 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
965 sizeof(struct nes_hw_qp_wqe) * sq_size;
966 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
967
968 nesqp->hwqp.q2_vbase = mem;
969 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
970 sizeof(struct nes_hw_qp_wqe) * rq_size;
971 mem += 256;
972 memset(nesqp->hwqp.q2_vbase, 0, 256);
973
974 nesqp->nesqp_context = mem;
975 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
976 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
977 return 0;
978 }
979
980
981 /**
982 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
983 */
984 static inline void nes_free_qp_mem(struct nes_device *nesdev,
985 struct nes_qp *nesqp, int virt_wqs)
986 {
987 unsigned long flags;
988 struct nes_adapter *nesadapter = nesdev->nesadapter;
989 if (!virt_wqs) {
990 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
991 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
992 }else {
993 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
994 nesadapter->free_256pbl++;
995 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
996 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
997 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
998 nesqp->pbl_vbase = NULL;
999 if (nesqp->sq_kmapped) {
1000 nesqp->sq_kmapped = 0;
1001 kunmap(nesqp->page);
1002 }
1003 }
1004 }
1005
1006
1007 /**
1008 * nes_create_qp
1009 */
1010 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1011 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1012 {
1013 u64 u64temp= 0;
1014 u64 u64nesqp = 0;
1015 struct nes_pd *nespd = to_nespd(ibpd);
1016 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1017 struct nes_device *nesdev = nesvnic->nesdev;
1018 struct nes_adapter *nesadapter = nesdev->nesadapter;
1019 struct nes_qp *nesqp;
1020 struct nes_cq *nescq;
1021 struct nes_ucontext *nes_ucontext;
1022 struct nes_hw_cqp_wqe *cqp_wqe;
1023 struct nes_cqp_request *cqp_request;
1024 struct nes_create_qp_req req;
1025 struct nes_create_qp_resp uresp;
1026 struct nes_pbl *nespbl = NULL;
1027 u32 qp_num = 0;
1028 u32 opcode = 0;
1029 /* u32 counter = 0; */
1030 void *mem;
1031 unsigned long flags;
1032 int ret;
1033 int err;
1034 int virt_wqs = 0;
1035 int sq_size;
1036 int rq_size;
1037 u8 sq_encoded_size;
1038 u8 rq_encoded_size;
1039 /* int counter; */
1040
1041 if (init_attr->create_flags)
1042 return ERR_PTR(-EINVAL);
1043
1044 atomic_inc(&qps_created);
1045 switch (init_attr->qp_type) {
1046 case IB_QPT_RC:
1047 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1048 init_attr->cap.max_inline_data = 0;
1049 } else {
1050 init_attr->cap.max_inline_data = 64;
1051 }
1052 sq_size = init_attr->cap.max_send_wr;
1053 rq_size = init_attr->cap.max_recv_wr;
1054
1055 /* check if the encoded sizes are OK or not... */
1056 sq_encoded_size = nes_get_encoded_size(&sq_size);
1057 rq_encoded_size = nes_get_encoded_size(&rq_size);
1058
1059 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1060 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1061 rq_size, sq_size);
1062 return ERR_PTR(-EINVAL);
1063 }
1064
1065 init_attr->cap.max_send_wr = sq_size -2;
1066 init_attr->cap.max_recv_wr = rq_size -1;
1067 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1068
1069 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1070 nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
1071 if (ret) {
1072 return ERR_PTR(ret);
1073 }
1074
1075 /* Need 512 (actually now 1024) byte alignment on this structure */
1076 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1077 if (!mem) {
1078 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1079 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1080 return ERR_PTR(-ENOMEM);
1081 }
1082 u64nesqp = (unsigned long)mem;
1083 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1084 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1085 u64nesqp &= ~u64temp;
1086 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1087 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1088 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1089 nesqp->allocated_buffer = mem;
1090
1091 if (udata) {
1092 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1093 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1094 kfree(nesqp->allocated_buffer);
1095 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1096 return ERR_PTR(-EFAULT);
1097 }
1098 if (req.user_wqe_buffers) {
1099 virt_wqs = 1;
1100 }
1101 if (req.user_qp_buffer)
1102 nesqp->nesuqp_addr = req.user_qp_buffer;
1103 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1104 nesqp->user_mode = 1;
1105 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1106 if (virt_wqs) {
1107 err = 1;
1108 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1109 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1110 list_del(&nespbl->list);
1111 err = 0;
1112 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1113 nespbl, nespbl->user_base);
1114 break;
1115 }
1116 }
1117 if (err) {
1118 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1119 (long long unsigned int)req.user_wqe_buffers);
1120 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1121 kfree(nesqp->allocated_buffer);
1122 return ERR_PTR(-EFAULT);
1123 }
1124 }
1125
1126 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1127 nesqp->mmap_sq_db_index =
1128 find_next_zero_bit(nes_ucontext->allocated_wqs,
1129 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1130 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1131 nespd->mmap_db_index); */
1132 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1133 nes_debug(NES_DBG_QP,
1134 "db index > max user regions, failing create QP\n");
1135 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1136 if (virt_wqs) {
1137 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1138 nespbl->pbl_pbase);
1139 kfree(nespbl);
1140 }
1141 kfree(nesqp->allocated_buffer);
1142 return ERR_PTR(-ENOMEM);
1143 }
1144 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1145 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1146 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1147 } else {
1148 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1149 kfree(nesqp->allocated_buffer);
1150 return ERR_PTR(-EFAULT);
1151 }
1152 }
1153 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1154 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1155 if (err) {
1156 nes_debug(NES_DBG_QP,
1157 "error geting qp mem code = %d\n", err);
1158 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1159 kfree(nesqp->allocated_buffer);
1160 return ERR_PTR(-ENOMEM);
1161 }
1162
1163 nesqp->hwqp.sq_size = sq_size;
1164 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1165 nesqp->hwqp.sq_head = 1;
1166 nesqp->hwqp.rq_size = rq_size;
1167 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1168 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1169 (void *)nesqp->nesqp_context_pbase);
1170 */
1171 nesqp->hwqp.qp_id = qp_num;
1172 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1173 nesqp->nespd = nespd;
1174
1175 nescq = to_nescq(init_attr->send_cq);
1176 nesqp->nesscq = nescq;
1177 nescq = to_nescq(init_attr->recv_cq);
1178 nesqp->nesrcq = nescq;
1179
1180 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1181 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1182 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1183 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1184 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1185 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1186 if (!udata) {
1187 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1188 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1189 }
1190 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1191 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1192 u64temp = (u64)nesqp->hwqp.sq_pbase;
1193 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1194 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1195
1196
1197 if (!virt_wqs) {
1198 u64temp = (u64)nesqp->hwqp.sq_pbase;
1199 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1200 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1201 u64temp = (u64)nesqp->hwqp.rq_pbase;
1202 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1203 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1204 } else {
1205 u64temp = (u64)nesqp->pbl_pbase;
1206 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1207 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1208 }
1209
1210 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1211 nesvnic->next_qp_nic_index,
1212 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1213 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1214 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1215 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1216 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1217 nesvnic->next_qp_nic_index++;
1218 if ((nesvnic->next_qp_nic_index > 3) ||
1219 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1220 nesvnic->next_qp_nic_index = 0;
1221 }
1222 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1223
1224 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1225 u64temp = (u64)nesqp->hwqp.q2_pbase;
1226 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1227 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1228 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1229 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1230 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1231 NES_QPCONTEXT_ORDIRD_AAH |
1232 ((((u32)nesadapter->max_irrq_wr) <<
1233 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1234 if (disable_mpa_crc) {
1235 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1236 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1237 }
1238
1239
1240 /* Create the QP */
1241 cqp_request = nes_get_cqp_request(nesdev);
1242 if (cqp_request == NULL) {
1243 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1244 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1245 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1246 kfree(nesqp->allocated_buffer);
1247 return ERR_PTR(-ENOMEM);
1248 }
1249 cqp_request->waiting = 1;
1250 cqp_wqe = &cqp_request->cqp_wqe;
1251
1252 if (!virt_wqs) {
1253 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1254 NES_CQP_QP_IWARP_STATE_IDLE;
1255 } else {
1256 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1257 NES_CQP_QP_IWARP_STATE_IDLE;
1258 }
1259 opcode |= NES_CQP_QP_CQS_VALID;
1260 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1261 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1262 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1263
1264 u64temp = (u64)nesqp->nesqp_context_pbase;
1265 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1266
1267 atomic_set(&cqp_request->refcount, 2);
1268 nes_post_cqp_request(nesdev, cqp_request);
1269
1270 /* Wait for CQP */
1271 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1272 nesqp->hwqp.qp_id);
1273 ret = wait_event_timeout(cqp_request->waitq,
1274 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1275 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1276 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1277 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1278 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1279 cqp_request->major_code, cqp_request->minor_code);
1280 if ((!ret) || (cqp_request->major_code)) {
1281 nes_put_cqp_request(nesdev, cqp_request);
1282 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1283 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1284 kfree(nesqp->allocated_buffer);
1285 if (!ret) {
1286 return ERR_PTR(-ETIME);
1287 } else {
1288 return ERR_PTR(-EIO);
1289 }
1290 }
1291
1292 nes_put_cqp_request(nesdev, cqp_request);
1293
1294 if (ibpd->uobject) {
1295 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1296 uresp.mmap_rq_db_index = 0;
1297 uresp.actual_sq_size = sq_size;
1298 uresp.actual_rq_size = rq_size;
1299 uresp.qp_id = nesqp->hwqp.qp_id;
1300 uresp.nes_drv_opt = nes_drv_opt;
1301 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1302 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1303 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1304 kfree(nesqp->allocated_buffer);
1305 return ERR_PTR(-EFAULT);
1306 }
1307 }
1308
1309 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1310 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1311 spin_lock_init(&nesqp->lock);
1312 nes_add_ref(&nesqp->ibqp);
1313 break;
1314 default:
1315 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1316 return ERR_PTR(-EINVAL);
1317 }
1318
1319 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1320 init_timer(&nesqp->terminate_timer);
1321 nesqp->terminate_timer.function = nes_terminate_timeout;
1322 nesqp->terminate_timer.data = (unsigned long)nesqp;
1323
1324 /* update the QP table */
1325 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1326 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1327 netdev_refcnt_read(nesvnic->netdev));
1328
1329 return &nesqp->ibqp;
1330 }
1331
1332 /**
1333 * nes_clean_cq
1334 */
1335 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1336 {
1337 u32 cq_head;
1338 u32 lo;
1339 u32 hi;
1340 u64 u64temp;
1341 unsigned long flags = 0;
1342
1343 spin_lock_irqsave(&nescq->lock, flags);
1344
1345 cq_head = nescq->hw_cq.cq_head;
1346 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1347 rmb();
1348 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1349 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1350 u64temp = (((u64)hi) << 32) | ((u64)lo);
1351 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1352 if (u64temp == (u64)(unsigned long)nesqp) {
1353 /* Zero the context value so cqe will be ignored */
1354 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1355 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1356 }
1357
1358 if (++cq_head >= nescq->hw_cq.cq_size)
1359 cq_head = 0;
1360 }
1361
1362 spin_unlock_irqrestore(&nescq->lock, flags);
1363 }
1364
1365
1366 /**
1367 * nes_destroy_qp
1368 */
1369 static int nes_destroy_qp(struct ib_qp *ibqp)
1370 {
1371 struct nes_qp *nesqp = to_nesqp(ibqp);
1372 struct nes_ucontext *nes_ucontext;
1373 struct ib_qp_attr attr;
1374 struct iw_cm_id *cm_id;
1375 struct iw_cm_event cm_event;
1376 int ret = 0;
1377
1378 atomic_inc(&sw_qps_destroyed);
1379 nesqp->destroyed = 1;
1380
1381 /* Blow away the connection if it exists. */
1382 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1383 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1384 attr.qp_state = IB_QPS_ERR;
1385 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1386 }
1387
1388 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1389 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1390 cm_id = nesqp->cm_id;
1391 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1392 cm_event.status = -ETIMEDOUT;
1393 cm_event.local_addr = cm_id->local_addr;
1394 cm_event.remote_addr = cm_id->remote_addr;
1395 cm_event.private_data = NULL;
1396 cm_event.private_data_len = 0;
1397
1398 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1399 "QP%u. cm_id = %p, refcount = %u. \n",
1400 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1401
1402 cm_id->rem_ref(cm_id);
1403 ret = cm_id->event_handler(cm_id, &cm_event);
1404 if (ret)
1405 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1406 }
1407
1408 if (nesqp->user_mode) {
1409 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1410 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1411 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1412 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1413 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1414 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1415 }
1416 }
1417 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1418 nesqp->sq_kmapped = 0;
1419 kunmap(nesqp->page);
1420 }
1421 } else {
1422 /* Clean any pending completions from the cq(s) */
1423 if (nesqp->nesscq)
1424 nes_clean_cq(nesqp, nesqp->nesscq);
1425
1426 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1427 nes_clean_cq(nesqp, nesqp->nesrcq);
1428 }
1429 nes_rem_ref(&nesqp->ibqp);
1430 return 0;
1431 }
1432
1433
1434 /**
1435 * nes_create_cq
1436 */
1437 static struct ib_cq *nes_create_cq(struct ib_device *ibdev,
1438 const struct ib_cq_init_attr *attr,
1439 struct ib_ucontext *context,
1440 struct ib_udata *udata)
1441 {
1442 int entries = attr->cqe;
1443 u64 u64temp;
1444 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1445 struct nes_device *nesdev = nesvnic->nesdev;
1446 struct nes_adapter *nesadapter = nesdev->nesadapter;
1447 struct nes_cq *nescq;
1448 struct nes_ucontext *nes_ucontext = NULL;
1449 struct nes_cqp_request *cqp_request;
1450 void *mem = NULL;
1451 struct nes_hw_cqp_wqe *cqp_wqe;
1452 struct nes_pbl *nespbl = NULL;
1453 struct nes_create_cq_req req;
1454 struct nes_create_cq_resp resp;
1455 u32 cq_num = 0;
1456 u32 opcode = 0;
1457 u32 pbl_entries = 1;
1458 int err;
1459 unsigned long flags;
1460 int ret;
1461
1462 if (attr->flags)
1463 return ERR_PTR(-EINVAL);
1464
1465 if (entries > nesadapter->max_cqe)
1466 return ERR_PTR(-EINVAL);
1467
1468 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1469 nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
1470 if (err) {
1471 return ERR_PTR(err);
1472 }
1473
1474 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1475 if (!nescq) {
1476 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1477 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1478 return ERR_PTR(-ENOMEM);
1479 }
1480
1481 nescq->hw_cq.cq_size = max(entries + 1, 5);
1482 nescq->hw_cq.cq_number = cq_num;
1483 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1484
1485
1486 if (context) {
1487 nes_ucontext = to_nesucontext(context);
1488 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1489 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1490 kfree(nescq);
1491 return ERR_PTR(-EFAULT);
1492 }
1493 nesvnic->mcrq_ucontext = nes_ucontext;
1494 nes_ucontext->mcrqf = req.mcrqf;
1495 if (nes_ucontext->mcrqf) {
1496 if (nes_ucontext->mcrqf & 0x80000000)
1497 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1498 else if (nes_ucontext->mcrqf & 0x40000000)
1499 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1500 else
1501 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1502 nescq->mcrqf = nes_ucontext->mcrqf;
1503 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1504 }
1505 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1506 (unsigned long)req.user_cq_buffer, entries);
1507 err = 1;
1508 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1509 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1510 list_del(&nespbl->list);
1511 err = 0;
1512 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1513 nespbl);
1514 break;
1515 }
1516 }
1517 if (err) {
1518 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1519 kfree(nescq);
1520 return ERR_PTR(-EFAULT);
1521 }
1522
1523 pbl_entries = nespbl->pbl_size >> 3;
1524 nescq->cq_mem_size = 0;
1525 } else {
1526 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1527 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1528 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1529
1530 /* allocate the physical buffer space */
1531 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1532 &nescq->hw_cq.cq_pbase);
1533 if (!mem) {
1534 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1535 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1536 kfree(nescq);
1537 return ERR_PTR(-ENOMEM);
1538 }
1539
1540 nescq->hw_cq.cq_vbase = mem;
1541 nescq->hw_cq.cq_head = 0;
1542 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1543 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1544 (u32)nescq->hw_cq.cq_pbase);
1545 }
1546
1547 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1548 spin_lock_init(&nescq->lock);
1549
1550 /* send CreateCQ request to CQP */
1551 cqp_request = nes_get_cqp_request(nesdev);
1552 if (cqp_request == NULL) {
1553 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1554 if (!context)
1555 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1556 nescq->hw_cq.cq_pbase);
1557 else {
1558 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1559 nespbl->pbl_vbase, nespbl->pbl_pbase);
1560 kfree(nespbl);
1561 }
1562
1563 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1564 kfree(nescq);
1565 return ERR_PTR(-ENOMEM);
1566 }
1567 cqp_request->waiting = 1;
1568 cqp_wqe = &cqp_request->cqp_wqe;
1569
1570 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1571 NES_CQP_CQ_CHK_OVERFLOW |
1572 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1573
1574 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1575
1576 if (pbl_entries != 1) {
1577 if (pbl_entries > 32) {
1578 /* use 4k pbl */
1579 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1580 if (nesadapter->free_4kpbl == 0) {
1581 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1582 nes_free_cqp_request(nesdev, cqp_request);
1583 if (!context)
1584 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1585 nescq->hw_cq.cq_pbase);
1586 else {
1587 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1588 nespbl->pbl_vbase, nespbl->pbl_pbase);
1589 kfree(nespbl);
1590 }
1591 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1592 kfree(nescq);
1593 return ERR_PTR(-ENOMEM);
1594 } else {
1595 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1596 nescq->virtual_cq = 2;
1597 nesadapter->free_4kpbl--;
1598 }
1599 } else {
1600 /* use 256 byte pbl */
1601 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1602 if (nesadapter->free_256pbl == 0) {
1603 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1604 nes_free_cqp_request(nesdev, cqp_request);
1605 if (!context)
1606 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1607 nescq->hw_cq.cq_pbase);
1608 else {
1609 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1610 nespbl->pbl_vbase, nespbl->pbl_pbase);
1611 kfree(nespbl);
1612 }
1613 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1614 kfree(nescq);
1615 return ERR_PTR(-ENOMEM);
1616 } else {
1617 opcode |= NES_CQP_CQ_VIRT;
1618 nescq->virtual_cq = 1;
1619 nesadapter->free_256pbl--;
1620 }
1621 }
1622 }
1623
1624 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1625
1626 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1627 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1628 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1629 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1630
1631 if (context) {
1632 if (pbl_entries != 1)
1633 u64temp = (u64)nespbl->pbl_pbase;
1634 else
1635 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1636 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1637 nes_ucontext->mmap_db_index[0]);
1638 } else {
1639 u64temp = (u64)nescq->hw_cq.cq_pbase;
1640 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1641 }
1642 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1643 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1644 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1645 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1646 cpu_to_le32((u32)(u64temp >> 1));
1647 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1648 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1649
1650 atomic_set(&cqp_request->refcount, 2);
1651 nes_post_cqp_request(nesdev, cqp_request);
1652
1653 /* Wait for CQP */
1654 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1655 nescq->hw_cq.cq_number);
1656 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1657 NES_EVENT_TIMEOUT * 2);
1658 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1659 nescq->hw_cq.cq_number, ret);
1660 if ((!ret) || (cqp_request->major_code)) {
1661 nes_put_cqp_request(nesdev, cqp_request);
1662 if (!context)
1663 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1664 nescq->hw_cq.cq_pbase);
1665 else {
1666 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1667 nespbl->pbl_vbase, nespbl->pbl_pbase);
1668 kfree(nespbl);
1669 }
1670 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1671 kfree(nescq);
1672 return ERR_PTR(-EIO);
1673 }
1674 nes_put_cqp_request(nesdev, cqp_request);
1675
1676 if (context) {
1677 /* free the nespbl */
1678 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1679 nespbl->pbl_pbase);
1680 kfree(nespbl);
1681 resp.cq_id = nescq->hw_cq.cq_number;
1682 resp.cq_size = nescq->hw_cq.cq_size;
1683 resp.mmap_db_index = 0;
1684 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
1685 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1686 kfree(nescq);
1687 return ERR_PTR(-EFAULT);
1688 }
1689 }
1690
1691 return &nescq->ibcq;
1692 }
1693
1694
1695 /**
1696 * nes_destroy_cq
1697 */
1698 static int nes_destroy_cq(struct ib_cq *ib_cq)
1699 {
1700 struct nes_cq *nescq;
1701 struct nes_device *nesdev;
1702 struct nes_vnic *nesvnic;
1703 struct nes_adapter *nesadapter;
1704 struct nes_hw_cqp_wqe *cqp_wqe;
1705 struct nes_cqp_request *cqp_request;
1706 unsigned long flags;
1707 u32 opcode = 0;
1708 int ret;
1709
1710 if (ib_cq == NULL)
1711 return 0;
1712
1713 nescq = to_nescq(ib_cq);
1714 nesvnic = to_nesvnic(ib_cq->device);
1715 nesdev = nesvnic->nesdev;
1716 nesadapter = nesdev->nesadapter;
1717
1718 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1719
1720 /* Send DestroyCQ request to CQP */
1721 cqp_request = nes_get_cqp_request(nesdev);
1722 if (cqp_request == NULL) {
1723 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1724 return -ENOMEM;
1725 }
1726 cqp_request->waiting = 1;
1727 cqp_wqe = &cqp_request->cqp_wqe;
1728 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1729 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1730 if (nescq->virtual_cq == 1) {
1731 nesadapter->free_256pbl++;
1732 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1733 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1734 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1735 }
1736 } else if (nescq->virtual_cq == 2) {
1737 nesadapter->free_4kpbl++;
1738 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1739 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1740 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1741 }
1742 opcode |= NES_CQP_CQ_4KB_CHUNK;
1743 }
1744
1745 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1746
1747 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1748 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1749 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1750 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1751 if (!nescq->mcrqf)
1752 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1753
1754 atomic_set(&cqp_request->refcount, 2);
1755 nes_post_cqp_request(nesdev, cqp_request);
1756
1757 /* Wait for CQP */
1758 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1759 nescq->hw_cq.cq_number);
1760 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1761 NES_EVENT_TIMEOUT);
1762 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1763 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1764 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1765 cqp_request->minor_code);
1766 if (!ret) {
1767 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1768 nescq->hw_cq.cq_number);
1769 ret = -ETIME;
1770 } else if (cqp_request->major_code) {
1771 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1772 nescq->hw_cq.cq_number);
1773 ret = -EIO;
1774 } else {
1775 ret = 0;
1776 }
1777 nes_put_cqp_request(nesdev, cqp_request);
1778
1779 if (nescq->cq_mem_size)
1780 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1781 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1782 kfree(nescq);
1783
1784 return ret;
1785 }
1786
1787 /**
1788 * root_256
1789 */
1790 static u32 root_256(struct nes_device *nesdev,
1791 struct nes_root_vpbl *root_vpbl,
1792 struct nes_root_vpbl *new_root,
1793 u16 pbl_count_4k)
1794 {
1795 u64 leaf_pbl;
1796 int i, j, k;
1797
1798 if (pbl_count_4k == 1) {
1799 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1800 512, &new_root->pbl_pbase);
1801
1802 if (new_root->pbl_vbase == NULL)
1803 return 0;
1804
1805 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1806 for (i = 0; i < 16; i++) {
1807 new_root->pbl_vbase[i].pa_low =
1808 cpu_to_le32((u32)leaf_pbl);
1809 new_root->pbl_vbase[i].pa_high =
1810 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1811 leaf_pbl += 256;
1812 }
1813 } else {
1814 for (i = 3; i >= 0; i--) {
1815 j = i * 16;
1816 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1817 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1818 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1819 << 32);
1820 for (k = 1; k < 16; k++) {
1821 leaf_pbl += 256;
1822 root_vpbl->pbl_vbase[j + k].pa_low =
1823 cpu_to_le32((u32)leaf_pbl);
1824 root_vpbl->pbl_vbase[j + k].pa_high =
1825 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1826 }
1827 }
1828 }
1829
1830 return 1;
1831 }
1832
1833
1834 /**
1835 * nes_reg_mr
1836 */
1837 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1838 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1839 dma_addr_t single_buffer, u16 pbl_count_4k,
1840 u16 residual_page_count_4k, int acc, u64 *iova_start,
1841 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1842 {
1843 struct nes_hw_cqp_wqe *cqp_wqe;
1844 struct nes_cqp_request *cqp_request;
1845 unsigned long flags;
1846 int ret;
1847 struct nes_adapter *nesadapter = nesdev->nesadapter;
1848 uint pg_cnt = 0;
1849 u16 pbl_count_256 = 0;
1850 u16 pbl_count = 0;
1851 u8 use_256_pbls = 0;
1852 u8 use_4k_pbls = 0;
1853 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1854 struct nes_root_vpbl new_root = { 0, NULL, NULL };
1855 u32 opcode = 0;
1856 u16 major_code;
1857
1858 /* Register the region with the adapter */
1859 cqp_request = nes_get_cqp_request(nesdev);
1860 if (cqp_request == NULL) {
1861 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1862 return -ENOMEM;
1863 }
1864 cqp_request->waiting = 1;
1865 cqp_wqe = &cqp_request->cqp_wqe;
1866
1867 if (pbl_count_4k) {
1868 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1869
1870 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1871 pbl_count_256 = (pg_cnt + 31) / 32;
1872 if (pg_cnt <= 32) {
1873 if (pbl_count_256 <= nesadapter->free_256pbl)
1874 use_256_pbls = 1;
1875 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1876 use_4k_pbls = 1;
1877 } else if (pg_cnt <= 2048) {
1878 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1879 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1880 use_4k_pbls = 1;
1881 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1882 use_256_pbls = 1;
1883 use_two_level = 1;
1884 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1885 use_4k_pbls = 1;
1886 }
1887 } else {
1888 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1889 use_4k_pbls = 1;
1890 }
1891
1892 if (use_256_pbls) {
1893 pbl_count = pbl_count_256;
1894 nesadapter->free_256pbl -= pbl_count + use_two_level;
1895 } else if (use_4k_pbls) {
1896 pbl_count = pbl_count_4k;
1897 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1898 } else {
1899 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1900 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1901 nes_free_cqp_request(nesdev, cqp_request);
1902 return -ENOMEM;
1903 }
1904
1905 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1906 }
1907
1908 if (use_256_pbls && use_two_level) {
1909 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1910 if (new_root.pbl_pbase != 0)
1911 root_vpbl = &new_root;
1912 } else {
1913 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1914 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1915 use_256_pbls = 0;
1916
1917 if (pbl_count_4k == 1)
1918 use_two_level = 0;
1919 pbl_count = pbl_count_4k;
1920
1921 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1922 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1923 use_4k_pbls = 1;
1924 }
1925 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1926
1927 if (use_4k_pbls == 0)
1928 return -ENOMEM;
1929 }
1930 }
1931
1932 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
1933 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
1934 if (acc & IB_ACCESS_LOCAL_WRITE)
1935 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
1936 if (acc & IB_ACCESS_REMOTE_WRITE)
1937 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
1938 if (acc & IB_ACCESS_REMOTE_READ)
1939 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
1940 if (acc & IB_ACCESS_MW_BIND)
1941 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
1942
1943 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1944 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1945 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
1946 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
1947
1948 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
1949 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
1950 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
1951 cpu_to_le32(nespd->pd_id & 0x00007fff);
1952 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
1953
1954 if (pbl_count == 0) {
1955 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
1956 } else {
1957 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
1958 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
1959 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
1960
1961 if (use_4k_pbls)
1962 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
1963 }
1964 barrier();
1965
1966 atomic_set(&cqp_request->refcount, 2);
1967 nes_post_cqp_request(nesdev, cqp_request);
1968
1969 /* Wait for CQP */
1970 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1971 NES_EVENT_TIMEOUT);
1972 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
1973 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1974 stag, ret, cqp_request->major_code, cqp_request->minor_code);
1975 major_code = cqp_request->major_code;
1976 nes_put_cqp_request(nesdev, cqp_request);
1977
1978 if ((!ret || major_code) && pbl_count != 0) {
1979 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1980 if (use_256_pbls)
1981 nesadapter->free_256pbl += pbl_count + use_two_level;
1982 else if (use_4k_pbls)
1983 nesadapter->free_4kpbl += pbl_count + use_two_level;
1984 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1985 }
1986 if (new_root.pbl_pbase)
1987 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
1988 new_root.pbl_pbase);
1989
1990 if (!ret)
1991 return -ETIME;
1992 else if (major_code)
1993 return -EIO;
1994
1995 *actual_pbl_cnt = pbl_count + use_two_level;
1996 *used_4k_pbls = use_4k_pbls;
1997 return 0;
1998 }
1999
2000
2001 /**
2002 * nes_reg_phys_mr
2003 */
2004 struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd, u64 addr, u64 size,
2005 int acc, u64 *iova_start)
2006 {
2007 u64 region_length;
2008 struct nes_pd *nespd = to_nespd(ib_pd);
2009 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2010 struct nes_device *nesdev = nesvnic->nesdev;
2011 struct nes_adapter *nesadapter = nesdev->nesadapter;
2012 struct nes_mr *nesmr;
2013 struct ib_mr *ibmr;
2014 struct nes_vpbl vpbl;
2015 struct nes_root_vpbl root_vpbl;
2016 u32 stag;
2017 unsigned long mask;
2018 u32 stag_index = 0;
2019 u32 next_stag_index = 0;
2020 u32 driver_key = 0;
2021 int err = 0;
2022 int ret = 0;
2023 u16 pbl_count = 0;
2024 u8 single_page = 1;
2025 u8 stag_key = 0;
2026
2027 region_length = 0;
2028 vpbl.pbl_vbase = NULL;
2029 root_vpbl.pbl_vbase = NULL;
2030 root_vpbl.pbl_pbase = 0;
2031
2032 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2033 stag_key = (u8)next_stag_index;
2034
2035 driver_key = 0;
2036
2037 next_stag_index >>= 8;
2038 next_stag_index %= nesadapter->max_mr;
2039
2040 if ((addr ^ *iova_start) & ~PAGE_MASK)
2041 return ERR_PTR(-EINVAL);
2042
2043 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2044 &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
2045 if (err) {
2046 return ERR_PTR(err);
2047 }
2048
2049 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2050 if (!nesmr) {
2051 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2052 return ERR_PTR(-ENOMEM);
2053 }
2054
2055 /* Allocate a 4K buffer for the PBL */
2056 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2057 &vpbl.pbl_pbase);
2058 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2059 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2060 if (!vpbl.pbl_vbase) {
2061 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2062 ibmr = ERR_PTR(-ENOMEM);
2063 kfree(nesmr);
2064 goto reg_phys_err;
2065 }
2066
2067
2068 mask = !size;
2069
2070 if (mask & ~PAGE_MASK) {
2071 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2072 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2073 ibmr = ERR_PTR(-EINVAL);
2074 kfree(nesmr);
2075 goto reg_phys_err;
2076 }
2077
2078 region_length += size;
2079 vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)addr & PAGE_MASK);
2080 vpbl.pbl_vbase[0].pa_high = cpu_to_le32((u32)((((u64)addr) >> 32)));
2081
2082 stag = stag_index << 8;
2083 stag |= driver_key;
2084 stag += (u32)stag_key;
2085
2086 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2087 " length = 0x%016lX, index = 0x%08X\n",
2088 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2089
2090 /* Make the leaf PBL the root if only one PBL */
2091 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2092
2093 if (single_page) {
2094 pbl_count = 0;
2095 } else {
2096 pbl_count = 1;
2097 }
2098 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2099 addr, pbl_count, 1, acc, iova_start,
2100 &nesmr->pbls_used, &nesmr->pbl_4k);
2101
2102 if (ret == 0) {
2103 nesmr->ibmr.rkey = stag;
2104 nesmr->ibmr.lkey = stag;
2105 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2106 ibmr = &nesmr->ibmr;
2107 } else {
2108 kfree(nesmr);
2109 ibmr = ERR_PTR(-ENOMEM);
2110 }
2111
2112 reg_phys_err:
2113 /* single PBL case */
2114 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2115 return ibmr;
2116 }
2117
2118
2119 /**
2120 * nes_get_dma_mr
2121 */
2122 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2123 {
2124 u64 kva = 0;
2125
2126 nes_debug(NES_DBG_MR, "\n");
2127
2128 return nes_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva);
2129 }
2130
2131 /**
2132 * nes_reg_user_mr
2133 */
2134 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2135 u64 virt, int acc, struct ib_udata *udata)
2136 {
2137 u64 iova_start;
2138 __le64 *pbl;
2139 u64 region_length;
2140 dma_addr_t last_dma_addr = 0;
2141 dma_addr_t first_dma_addr = 0;
2142 struct nes_pd *nespd = to_nespd(pd);
2143 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2144 struct nes_device *nesdev = nesvnic->nesdev;
2145 struct nes_adapter *nesadapter = nesdev->nesadapter;
2146 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2147 struct scatterlist *sg;
2148 struct nes_ucontext *nes_ucontext;
2149 struct nes_pbl *nespbl;
2150 struct nes_mr *nesmr;
2151 struct ib_umem *region;
2152 struct nes_mem_reg_req req;
2153 struct nes_vpbl vpbl;
2154 struct nes_root_vpbl root_vpbl;
2155 int entry, page_index;
2156 int page_count = 0;
2157 int err, pbl_depth = 0;
2158 int chunk_pages;
2159 int ret;
2160 u32 stag;
2161 u32 stag_index = 0;
2162 u32 next_stag_index;
2163 u32 driver_key;
2164 u32 root_pbl_index = 0;
2165 u32 cur_pbl_index = 0;
2166 u32 skip_pages;
2167 u16 pbl_count;
2168 u8 single_page = 1;
2169 u8 stag_key;
2170 int first_page = 1;
2171
2172 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2173 if (IS_ERR(region)) {
2174 return (struct ib_mr *)region;
2175 }
2176
2177 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2178 " offset = %u, page size = %u.\n",
2179 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2180 ib_umem_offset(region), region->page_size);
2181
2182 skip_pages = ((u32)ib_umem_offset(region)) >> 12;
2183
2184 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2185 ib_umem_release(region);
2186 return ERR_PTR(-EFAULT);
2187 }
2188 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2189
2190 switch (req.reg_type) {
2191 case IWNES_MEMREG_TYPE_MEM:
2192 pbl_depth = 0;
2193 region_length = 0;
2194 vpbl.pbl_vbase = NULL;
2195 root_vpbl.pbl_vbase = NULL;
2196 root_vpbl.pbl_pbase = 0;
2197
2198 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2199 stag_key = (u8)next_stag_index;
2200
2201 driver_key = next_stag_index & 0x70000000;
2202
2203 next_stag_index >>= 8;
2204 next_stag_index %= nesadapter->max_mr;
2205
2206 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2207 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
2208 if (err) {
2209 ib_umem_release(region);
2210 return ERR_PTR(err);
2211 }
2212
2213 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2214 if (!nesmr) {
2215 ib_umem_release(region);
2216 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2217 return ERR_PTR(-ENOMEM);
2218 }
2219 nesmr->region = region;
2220
2221 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2222 if (sg_dma_address(sg) & ~PAGE_MASK) {
2223 ib_umem_release(region);
2224 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2225 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2226 (unsigned int) sg_dma_address(sg));
2227 ibmr = ERR_PTR(-EINVAL);
2228 kfree(nesmr);
2229 goto reg_user_mr_err;
2230 }
2231
2232 if (!sg_dma_len(sg)) {
2233 ib_umem_release(region);
2234 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2235 stag_index);
2236 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2237 ibmr = ERR_PTR(-EINVAL);
2238 kfree(nesmr);
2239 goto reg_user_mr_err;
2240 }
2241
2242 region_length += sg_dma_len(sg);
2243 chunk_pages = sg_dma_len(sg) >> 12;
2244 region_length -= skip_pages << 12;
2245 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2246 skip_pages = 0;
2247 if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
2248 goto enough_pages;
2249 if ((page_count&0x01FF) == 0) {
2250 if (page_count >= 1024 * 512) {
2251 ib_umem_release(region);
2252 nes_free_resource(nesadapter,
2253 nesadapter->allocated_mrs, stag_index);
2254 kfree(nesmr);
2255 ibmr = ERR_PTR(-E2BIG);
2256 goto reg_user_mr_err;
2257 }
2258 if (root_pbl_index == 1) {
2259 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2260 8192, &root_vpbl.pbl_pbase);
2261 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2262 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2263 if (!root_vpbl.pbl_vbase) {
2264 ib_umem_release(region);
2265 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2266 vpbl.pbl_pbase);
2267 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2268 stag_index);
2269 kfree(nesmr);
2270 ibmr = ERR_PTR(-ENOMEM);
2271 goto reg_user_mr_err;
2272 }
2273 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2274 GFP_KERNEL);
2275 if (!root_vpbl.leaf_vpbl) {
2276 ib_umem_release(region);
2277 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2278 root_vpbl.pbl_pbase);
2279 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2280 vpbl.pbl_pbase);
2281 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2282 stag_index);
2283 kfree(nesmr);
2284 ibmr = ERR_PTR(-ENOMEM);
2285 goto reg_user_mr_err;
2286 }
2287 root_vpbl.pbl_vbase[0].pa_low =
2288 cpu_to_le32((u32)vpbl.pbl_pbase);
2289 root_vpbl.pbl_vbase[0].pa_high =
2290 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2291 root_vpbl.leaf_vpbl[0] = vpbl;
2292 }
2293 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2294 &vpbl.pbl_pbase);
2295 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2296 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2297 if (!vpbl.pbl_vbase) {
2298 ib_umem_release(region);
2299 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2300 ibmr = ERR_PTR(-ENOMEM);
2301 kfree(nesmr);
2302 goto reg_user_mr_err;
2303 }
2304 if (1 <= root_pbl_index) {
2305 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2306 cpu_to_le32((u32)vpbl.pbl_pbase);
2307 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2308 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2309 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2310 }
2311 root_pbl_index++;
2312 cur_pbl_index = 0;
2313 }
2314 if (single_page) {
2315 if (page_count != 0) {
2316 if ((last_dma_addr+4096) !=
2317 (sg_dma_address(sg)+
2318 (page_index*4096)))
2319 single_page = 0;
2320 last_dma_addr = sg_dma_address(sg)+
2321 (page_index*4096);
2322 } else {
2323 first_dma_addr = sg_dma_address(sg)+
2324 (page_index*4096);
2325 last_dma_addr = first_dma_addr;
2326 }
2327 }
2328
2329 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2330 cpu_to_le32((u32)(sg_dma_address(sg)+
2331 (page_index*4096)));
2332 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2333 cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2334 (page_index*4096))) >> 32)));
2335 cur_pbl_index++;
2336 page_count++;
2337 }
2338 }
2339
2340 enough_pages:
2341 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2342 " stag_key=0x%08x\n",
2343 stag_index, driver_key, stag_key);
2344 stag = stag_index << 8;
2345 stag |= driver_key;
2346 stag += (u32)stag_key;
2347
2348 iova_start = virt;
2349 /* Make the leaf PBL the root if only one PBL */
2350 if (root_pbl_index == 1) {
2351 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2352 }
2353
2354 if (single_page) {
2355 pbl_count = 0;
2356 } else {
2357 pbl_count = root_pbl_index;
2358 first_dma_addr = 0;
2359 }
2360 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2361 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2362 stag, (unsigned int)iova_start,
2363 (unsigned int)region_length, stag_index,
2364 (unsigned long long)region->length, pbl_count);
2365 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2366 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2367 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2368
2369 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2370
2371 if (ret == 0) {
2372 nesmr->ibmr.rkey = stag;
2373 nesmr->ibmr.lkey = stag;
2374 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2375 ibmr = &nesmr->ibmr;
2376 } else {
2377 ib_umem_release(region);
2378 kfree(nesmr);
2379 ibmr = ERR_PTR(-ENOMEM);
2380 }
2381
2382 reg_user_mr_err:
2383 /* free the resources */
2384 if (root_pbl_index == 1) {
2385 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2386 vpbl.pbl_pbase);
2387 } else {
2388 for (page_index=0; page_index<root_pbl_index; page_index++) {
2389 pci_free_consistent(nesdev->pcidev, 4096,
2390 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2391 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2392 }
2393 kfree(root_vpbl.leaf_vpbl);
2394 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2395 root_vpbl.pbl_pbase);
2396 }
2397
2398 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2399
2400 return ibmr;
2401 case IWNES_MEMREG_TYPE_QP:
2402 case IWNES_MEMREG_TYPE_CQ:
2403 if (!region->length) {
2404 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2405 ib_umem_release(region);
2406 return ERR_PTR(-EINVAL);
2407 }
2408 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2409 if (!nespbl) {
2410 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2411 ib_umem_release(region);
2412 return ERR_PTR(-ENOMEM);
2413 }
2414 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2415 if (!nesmr) {
2416 ib_umem_release(region);
2417 kfree(nespbl);
2418 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2419 return ERR_PTR(-ENOMEM);
2420 }
2421 nesmr->region = region;
2422 nes_ucontext = to_nesucontext(pd->uobject->context);
2423 pbl_depth = region->length >> 12;
2424 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2425 nespbl->pbl_size = pbl_depth*sizeof(u64);
2426 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2427 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2428 } else {
2429 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2430 }
2431
2432 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2433 nespbl->pbl_size, pbl_depth);
2434 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2435 &nespbl->pbl_pbase);
2436 if (!pbl) {
2437 ib_umem_release(region);
2438 kfree(nesmr);
2439 kfree(nespbl);
2440 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2441 return ERR_PTR(-ENOMEM);
2442 }
2443
2444 nespbl->pbl_vbase = (u64 *)pbl;
2445 nespbl->user_base = start;
2446 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2447 " pbl_vbase=%p user_base=0x%lx\n",
2448 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2449 (void *) nespbl->pbl_vbase, nespbl->user_base);
2450
2451 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2452 chunk_pages = sg_dma_len(sg) >> 12;
2453 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2454 if (first_page) {
2455 nespbl->page = sg_page(sg);
2456 first_page = 0;
2457 }
2458
2459 for (page_index = 0; page_index < chunk_pages; page_index++) {
2460 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2461 (sg_dma_address(sg)+
2462 (page_index*4096)));
2463 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2464 (sg_dma_address(sg)+
2465 (page_index*4096)))>>32);
2466 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2467 (unsigned long long)*pbl,
2468 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2469 pbl++;
2470 }
2471 }
2472
2473 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2474 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2475 } else {
2476 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2477 }
2478 nesmr->ibmr.rkey = -1;
2479 nesmr->ibmr.lkey = -1;
2480 nesmr->mode = req.reg_type;
2481 return &nesmr->ibmr;
2482 }
2483
2484 ib_umem_release(region);
2485 return ERR_PTR(-ENOSYS);
2486 }
2487
2488
2489 /**
2490 * nes_dereg_mr
2491 */
2492 static int nes_dereg_mr(struct ib_mr *ib_mr)
2493 {
2494 struct nes_mr *nesmr = to_nesmr(ib_mr);
2495 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2496 struct nes_device *nesdev = nesvnic->nesdev;
2497 struct nes_adapter *nesadapter = nesdev->nesadapter;
2498 struct nes_hw_cqp_wqe *cqp_wqe;
2499 struct nes_cqp_request *cqp_request;
2500 unsigned long flags;
2501 int ret;
2502 u16 major_code;
2503 u16 minor_code;
2504
2505
2506 if (nesmr->pages)
2507 pci_free_consistent(nesdev->pcidev,
2508 nesmr->max_pages * sizeof(u64),
2509 nesmr->pages,
2510 nesmr->paddr);
2511
2512 if (nesmr->region) {
2513 ib_umem_release(nesmr->region);
2514 }
2515 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2516 kfree(nesmr);
2517 return 0;
2518 }
2519
2520 /* Deallocate the region with the adapter */
2521
2522 cqp_request = nes_get_cqp_request(nesdev);
2523 if (cqp_request == NULL) {
2524 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2525 return -ENOMEM;
2526 }
2527 cqp_request->waiting = 1;
2528 cqp_wqe = &cqp_request->cqp_wqe;
2529
2530 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2531 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2532 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2533 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2534 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2535
2536 atomic_set(&cqp_request->refcount, 2);
2537 nes_post_cqp_request(nesdev, cqp_request);
2538
2539 /* Wait for CQP */
2540 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2541 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2542 NES_EVENT_TIMEOUT);
2543 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2544 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2545 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2546
2547 major_code = cqp_request->major_code;
2548 minor_code = cqp_request->minor_code;
2549
2550 nes_put_cqp_request(nesdev, cqp_request);
2551
2552 if (!ret) {
2553 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2554 " ib_mr=%p, rkey = 0x%08X\n",
2555 ib_mr, ib_mr->rkey);
2556 return -ETIME;
2557 } else if (major_code) {
2558 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2559 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2560 major_code, minor_code, ib_mr, ib_mr->rkey);
2561 return -EIO;
2562 }
2563
2564 if (nesmr->pbls_used != 0) {
2565 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2566 if (nesmr->pbl_4k) {
2567 nesadapter->free_4kpbl += nesmr->pbls_used;
2568 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2569 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2570 "exceeded the max(%u)\n",
2571 nesadapter->free_4kpbl,
2572 nesadapter->max_4kpbl);
2573 } else {
2574 nesadapter->free_256pbl += nesmr->pbls_used;
2575 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2576 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2577 "exceeded the max(%u)\n",
2578 nesadapter->free_256pbl,
2579 nesadapter->max_256pbl);
2580 }
2581 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2582 }
2583 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2584 (ib_mr->rkey & 0x0fffff00) >> 8);
2585
2586 kfree(nesmr);
2587
2588 return 0;
2589 }
2590
2591
2592 /**
2593 * show_rev
2594 */
2595 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2596 char *buf)
2597 {
2598 struct nes_ib_device *nesibdev =
2599 container_of(dev, struct nes_ib_device, ibdev.dev);
2600 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2601
2602 nes_debug(NES_DBG_INIT, "\n");
2603 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2604 }
2605
2606
2607 /**
2608 * show_fw_ver
2609 */
2610 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2611 char *buf)
2612 {
2613 struct nes_ib_device *nesibdev =
2614 container_of(dev, struct nes_ib_device, ibdev.dev);
2615 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2616
2617 nes_debug(NES_DBG_INIT, "\n");
2618 return sprintf(buf, "%u.%u\n",
2619 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2620 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2621 }
2622
2623
2624 /**
2625 * show_hca
2626 */
2627 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2628 char *buf)
2629 {
2630 nes_debug(NES_DBG_INIT, "\n");
2631 return sprintf(buf, "NES020\n");
2632 }
2633
2634
2635 /**
2636 * show_board
2637 */
2638 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2639 char *buf)
2640 {
2641 nes_debug(NES_DBG_INIT, "\n");
2642 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2643 }
2644
2645
2646 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2647 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2648 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2649 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2650
2651 static struct device_attribute *nes_dev_attributes[] = {
2652 &dev_attr_hw_rev,
2653 &dev_attr_fw_ver,
2654 &dev_attr_hca_type,
2655 &dev_attr_board_id
2656 };
2657
2658
2659 /**
2660 * nes_query_qp
2661 */
2662 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2663 int attr_mask, struct ib_qp_init_attr *init_attr)
2664 {
2665 struct nes_qp *nesqp = to_nesqp(ibqp);
2666
2667 nes_debug(NES_DBG_QP, "\n");
2668
2669 attr->qp_access_flags = 0;
2670 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2671 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2672 attr->cap.max_recv_sge = 1;
2673 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2674 attr->cap.max_inline_data = 0;
2675 else
2676 attr->cap.max_inline_data = 64;
2677
2678 init_attr->event_handler = nesqp->ibqp.event_handler;
2679 init_attr->qp_context = nesqp->ibqp.qp_context;
2680 init_attr->send_cq = nesqp->ibqp.send_cq;
2681 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2682 init_attr->srq = nesqp->ibqp.srq;
2683 init_attr->cap = attr->cap;
2684
2685 return 0;
2686 }
2687
2688
2689 /**
2690 * nes_hw_modify_qp
2691 */
2692 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2693 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2694 {
2695 struct nes_hw_cqp_wqe *cqp_wqe;
2696 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2697 /* struct iw_cm_event cm_event; */
2698 struct nes_cqp_request *cqp_request;
2699 int ret;
2700 u16 major_code;
2701
2702 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2703 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2704
2705 cqp_request = nes_get_cqp_request(nesdev);
2706 if (cqp_request == NULL) {
2707 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2708 return -ENOMEM;
2709 }
2710 if (wait_completion) {
2711 cqp_request->waiting = 1;
2712 } else {
2713 cqp_request->waiting = 0;
2714 }
2715 cqp_wqe = &cqp_request->cqp_wqe;
2716
2717 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2718 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2719 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2720 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2721 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2722 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2723 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2724
2725 /* If sending a terminate message, fill in the length (in words) */
2726 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2727 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2728 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2729 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2730 }
2731
2732 atomic_set(&cqp_request->refcount, 2);
2733 nes_post_cqp_request(nesdev, cqp_request);
2734
2735 /* Wait for CQP */
2736 if (wait_completion) {
2737 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2738 nesqp->hwqp.qp_id); */
2739 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2740 NES_EVENT_TIMEOUT);
2741 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2742 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2743 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2744 major_code = cqp_request->major_code;
2745 if (major_code) {
2746 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2747 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2748 nesqp->hwqp.qp_id, cqp_request->major_code,
2749 cqp_request->minor_code, next_iwarp_state);
2750 }
2751
2752 nes_put_cqp_request(nesdev, cqp_request);
2753
2754 if (!ret)
2755 return -ETIME;
2756 else if (major_code)
2757 return -EIO;
2758 else
2759 return 0;
2760 } else {
2761 return 0;
2762 }
2763 }
2764
2765
2766 /**
2767 * nes_modify_qp
2768 */
2769 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2770 int attr_mask, struct ib_udata *udata)
2771 {
2772 struct nes_qp *nesqp = to_nesqp(ibqp);
2773 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2774 struct nes_device *nesdev = nesvnic->nesdev;
2775 /* u32 cqp_head; */
2776 /* u32 counter; */
2777 u32 next_iwarp_state = 0;
2778 int err;
2779 unsigned long qplockflags;
2780 int ret;
2781 u16 original_last_aeq;
2782 u8 issue_modify_qp = 0;
2783 u8 dont_wait = 0;
2784
2785 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2786 " iwarp_state=0x%X, refcount=%d\n",
2787 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2788 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2789
2790 spin_lock_irqsave(&nesqp->lock, qplockflags);
2791
2792 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2793 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2794 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2795 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2796
2797 if (attr_mask & IB_QP_STATE) {
2798 switch (attr->qp_state) {
2799 case IB_QPS_INIT:
2800 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2801 nesqp->hwqp.qp_id);
2802 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2803 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2804 return -EINVAL;
2805 }
2806 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2807 issue_modify_qp = 1;
2808 break;
2809 case IB_QPS_RTR:
2810 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2811 nesqp->hwqp.qp_id);
2812 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2813 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2814 return -EINVAL;
2815 }
2816 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2817 issue_modify_qp = 1;
2818 break;
2819 case IB_QPS_RTS:
2820 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2821 nesqp->hwqp.qp_id);
2822 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2823 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2824 return -EINVAL;
2825 }
2826 if (nesqp->cm_id == NULL) {
2827 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2828 nesqp->hwqp.qp_id );
2829 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2830 return -EINVAL;
2831 }
2832 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2833 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2834 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2835 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2836 issue_modify_qp = 1;
2837 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2838 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2839 nesqp->hte_added = 1;
2840 break;
2841 case IB_QPS_SQD:
2842 issue_modify_qp = 1;
2843 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2844 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2845 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2846 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2847 return 0;
2848 } else {
2849 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2850 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2851 " ignored due to current iWARP state\n",
2852 nesqp->hwqp.qp_id);
2853 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2854 return -EINVAL;
2855 }
2856 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
2857 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2858 " already done based on hw state.\n",
2859 nesqp->hwqp.qp_id);
2860 issue_modify_qp = 0;
2861 }
2862 switch (nesqp->hw_iwarp_state) {
2863 case NES_AEQE_IWARP_STATE_CLOSING:
2864 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2865 break;
2866 case NES_AEQE_IWARP_STATE_TERMINATE:
2867 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2868 break;
2869 case NES_AEQE_IWARP_STATE_ERROR:
2870 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2871 break;
2872 default:
2873 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2874 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
2875 break;
2876 }
2877 }
2878 break;
2879 case IB_QPS_SQE:
2880 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
2881 nesqp->hwqp.qp_id);
2882 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
2883 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2884 return -EINVAL;
2885 }
2886 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2887 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2888 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
2889 issue_modify_qp = 1;
2890 break;
2891 case IB_QPS_ERR:
2892 case IB_QPS_RESET:
2893 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
2894 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2895 return -EINVAL;
2896 }
2897 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
2898 nesqp->hwqp.qp_id);
2899 if (nesqp->term_flags)
2900 del_timer(&nesqp->terminate_timer);
2901
2902 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2903 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2904 if (nesqp->hte_added) {
2905 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
2906 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
2907 nesqp->hte_added = 0;
2908 }
2909 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
2910 (nesdev->iw_status) &&
2911 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
2912 next_iwarp_state |= NES_CQP_QP_RESET;
2913 } else {
2914 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
2915 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
2916 dont_wait = 1;
2917 }
2918 issue_modify_qp = 1;
2919 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
2920 break;
2921 default:
2922 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2923 return -EINVAL;
2924 break;
2925 }
2926
2927 nesqp->ibqp_state = attr->qp_state;
2928 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
2929 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
2930 nesqp->iwarp_state);
2931 }
2932
2933 if (attr_mask & IB_QP_ACCESS_FLAGS) {
2934 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
2935 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2936 NES_QPCONTEXT_MISC_RDMA_READ_EN);
2937 issue_modify_qp = 1;
2938 }
2939 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
2940 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
2941 issue_modify_qp = 1;
2942 }
2943 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
2944 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
2945 issue_modify_qp = 1;
2946 }
2947 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
2948 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
2949 issue_modify_qp = 1;
2950 }
2951
2952 if (nesqp->user_mode) {
2953 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2954 NES_QPCONTEXT_MISC_RDMA_READ_EN);
2955 issue_modify_qp = 1;
2956 }
2957 }
2958
2959 original_last_aeq = nesqp->last_aeq;
2960 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2961
2962 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
2963
2964 ret = 0;
2965
2966
2967 if (issue_modify_qp) {
2968 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
2969 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
2970 if (ret)
2971 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
2972 " failed for QP%u.\n",
2973 next_iwarp_state, nesqp->hwqp.qp_id);
2974
2975 }
2976
2977 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
2978 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
2979 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2980 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2981 original_last_aeq, nesqp->last_aeq);
2982 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
2983 if (dont_wait) {
2984 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
2985 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
2986 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2987 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2988 original_last_aeq, nesqp->last_aeq);
2989 /* this one is for the cm_disconnect thread */
2990 spin_lock_irqsave(&nesqp->lock, qplockflags);
2991 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
2992 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
2993 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2994 nes_cm_disconn(nesqp);
2995 } else {
2996 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
2997 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2998 }
2999 } else {
3000 spin_lock_irqsave(&nesqp->lock, qplockflags);
3001 if (nesqp->cm_id) {
3002 /* These two are for the timer thread */
3003 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3004 nesqp->cm_id->add_ref(nesqp->cm_id);
3005 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3006 " need ae to finish up, original_last_aeq = 0x%04X."
3007 " last_aeq = 0x%04X, scheduling timer.\n",
3008 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3009 original_last_aeq, nesqp->last_aeq);
3010 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3011 }
3012 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3013 } else {
3014 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3015 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3016 " need ae to finish up, original_last_aeq = 0x%04X."
3017 " last_aeq = 0x%04X.\n",
3018 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3019 original_last_aeq, nesqp->last_aeq);
3020 }
3021 }
3022 } else {
3023 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3024 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3025 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3026 original_last_aeq, nesqp->last_aeq);
3027 }
3028 } else {
3029 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3030 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3031 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3032 original_last_aeq, nesqp->last_aeq);
3033 }
3034
3035 err = 0;
3036
3037 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3038 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3039
3040 return err;
3041 }
3042
3043
3044 /**
3045 * nes_muticast_attach
3046 */
3047 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3048 {
3049 nes_debug(NES_DBG_INIT, "\n");
3050 return -ENOSYS;
3051 }
3052
3053
3054 /**
3055 * nes_multicast_detach
3056 */
3057 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3058 {
3059 nes_debug(NES_DBG_INIT, "\n");
3060 return -ENOSYS;
3061 }
3062
3063
3064 /**
3065 * nes_process_mad
3066 */
3067 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3068 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
3069 const struct ib_mad_hdr *in, size_t in_mad_size,
3070 struct ib_mad_hdr *out, size_t *out_mad_size,
3071 u16 *out_mad_pkey_index)
3072 {
3073 nes_debug(NES_DBG_INIT, "\n");
3074 return -ENOSYS;
3075 }
3076
3077 static inline void
3078 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3079 {
3080 int sge_index;
3081 int total_payload_length = 0;
3082 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3083 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3084 ib_wr->sg_list[sge_index].addr);
3085 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3086 ib_wr->sg_list[sge_index].length);
3087 if (uselkey)
3088 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3089 (ib_wr->sg_list[sge_index].lkey));
3090 else
3091 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3092
3093 total_payload_length += ib_wr->sg_list[sge_index].length;
3094 }
3095 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3096 total_payload_length);
3097 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3098 total_payload_length);
3099 }
3100
3101 /**
3102 * nes_post_send
3103 */
3104 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3105 struct ib_send_wr **bad_wr)
3106 {
3107 u64 u64temp;
3108 unsigned long flags = 0;
3109 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3110 struct nes_device *nesdev = nesvnic->nesdev;
3111 struct nes_qp *nesqp = to_nesqp(ibqp);
3112 struct nes_hw_qp_wqe *wqe;
3113 int err = 0;
3114 u32 qsize = nesqp->hwqp.sq_size;
3115 u32 head;
3116 u32 wqe_misc = 0;
3117 u32 wqe_count = 0;
3118 u32 counter;
3119
3120 if (nesqp->ibqp_state > IB_QPS_RTS) {
3121 err = -EINVAL;
3122 goto out;
3123 }
3124
3125 spin_lock_irqsave(&nesqp->lock, flags);
3126
3127 head = nesqp->hwqp.sq_head;
3128
3129 while (ib_wr) {
3130 /* Check for QP error */
3131 if (nesqp->term_flags) {
3132 err = -EINVAL;
3133 break;
3134 }
3135
3136 /* Check for SQ overflow */
3137 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3138 err = -ENOMEM;
3139 break;
3140 }
3141
3142 wqe = &nesqp->hwqp.sq_vbase[head];
3143 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3144 nesqp->hwqp.qp_id, wqe, head); */
3145 nes_fill_init_qp_wqe(wqe, nesqp, head);
3146 u64temp = (u64)(ib_wr->wr_id);
3147 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3148 u64temp);
3149 switch (ib_wr->opcode) {
3150 case IB_WR_SEND:
3151 case IB_WR_SEND_WITH_INV:
3152 if (IB_WR_SEND == ib_wr->opcode) {
3153 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3154 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3155 else
3156 wqe_misc = NES_IWARP_SQ_OP_SEND;
3157 } else {
3158 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3159 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3160 else
3161 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3162
3163 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3164 ib_wr->ex.invalidate_rkey);
3165 }
3166
3167 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3168 err = -EINVAL;
3169 break;
3170 }
3171
3172 if (ib_wr->send_flags & IB_SEND_FENCE)
3173 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3174
3175 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3176 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3177 (ib_wr->sg_list[0].length <= 64)) {
3178 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3179 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3180 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3181 ib_wr->sg_list[0].length);
3182 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3183 } else {
3184 fill_wqe_sg_send(wqe, ib_wr, 1);
3185 }
3186
3187 break;
3188 case IB_WR_RDMA_WRITE:
3189 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3190 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3191 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3192 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3193 err = -EINVAL;
3194 break;
3195 }
3196
3197 if (ib_wr->send_flags & IB_SEND_FENCE)
3198 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3199
3200 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3201 rdma_wr(ib_wr)->rkey);
3202 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3203 rdma_wr(ib_wr)->remote_addr);
3204
3205 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3206 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3207 (ib_wr->sg_list[0].length <= 64)) {
3208 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3209 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3210 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3211 ib_wr->sg_list[0].length);
3212 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3213 } else {
3214 fill_wqe_sg_send(wqe, ib_wr, 1);
3215 }
3216
3217 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3218 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3219 break;
3220 case IB_WR_RDMA_READ:
3221 case IB_WR_RDMA_READ_WITH_INV:
3222 /* iWARP only supports 1 sge for RDMA reads */
3223 if (ib_wr->num_sge > 1) {
3224 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3225 ib_wr->num_sge);
3226 err = -EINVAL;
3227 break;
3228 }
3229 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3230 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3231 } else {
3232 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3233 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3234 ib_wr->ex.invalidate_rkey);
3235 }
3236
3237 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3238 rdma_wr(ib_wr)->remote_addr);
3239 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3240 rdma_wr(ib_wr)->rkey);
3241 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3242 ib_wr->sg_list->length);
3243 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3244 ib_wr->sg_list->addr);
3245 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3246 ib_wr->sg_list->lkey);
3247 break;
3248 case IB_WR_LOCAL_INV:
3249 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3250 set_wqe_32bit_value(wqe->wqe_words,
3251 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3252 ib_wr->ex.invalidate_rkey);
3253 break;
3254 case IB_WR_REG_MR:
3255 {
3256 struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
3257 int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
3258 int flags = reg_wr(ib_wr)->access;
3259
3260 if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3261 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3262 err = -EINVAL;
3263 break;
3264 }
3265 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3266 set_wqe_64bit_value(wqe->wqe_words,
3267 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3268 mr->ibmr.iova);
3269 set_wqe_32bit_value(wqe->wqe_words,
3270 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3271 mr->ibmr.length);
3272 set_wqe_32bit_value(wqe->wqe_words,
3273 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3274 set_wqe_32bit_value(wqe->wqe_words,
3275 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3276 reg_wr(ib_wr)->key);
3277
3278 if (page_shift == 12) {
3279 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3280 } else if (page_shift == 21) {
3281 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3282 } else {
3283 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3284 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3285 err = -EINVAL;
3286 break;
3287 }
3288
3289 /* Set access_flags */
3290 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3291 if (flags & IB_ACCESS_LOCAL_WRITE)
3292 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3293
3294 if (flags & IB_ACCESS_REMOTE_WRITE)
3295 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3296
3297 if (flags & IB_ACCESS_REMOTE_READ)
3298 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3299
3300 if (flags & IB_ACCESS_MW_BIND)
3301 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3302
3303 /* Fill in PBL info: */
3304 set_wqe_64bit_value(wqe->wqe_words,
3305 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3306 mr->paddr);
3307
3308 set_wqe_32bit_value(wqe->wqe_words,
3309 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3310 mr->npages * 8);
3311
3312 nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
3313 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3314 "page_list_len: %u, wqe_misc: %x\n",
3315 (unsigned long long) mr->ibmr.iova,
3316 mr->ibmr.length,
3317 reg_wr(ib_wr)->key,
3318 (unsigned long long) mr->paddr,
3319 mr->npages,
3320 wqe_misc);
3321 break;
3322 }
3323 default:
3324 /* error */
3325 err = -EINVAL;
3326 break;
3327 }
3328
3329 if (err)
3330 break;
3331
3332 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3333 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3334
3335 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3336
3337 ib_wr = ib_wr->next;
3338 head++;
3339 wqe_count++;
3340 if (head >= qsize)
3341 head = 0;
3342
3343 }
3344
3345 nesqp->hwqp.sq_head = head;
3346 barrier();
3347 while (wqe_count) {
3348 counter = min(wqe_count, ((u32)255));
3349 wqe_count -= counter;
3350 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3351 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3352 }
3353
3354 spin_unlock_irqrestore(&nesqp->lock, flags);
3355
3356 out:
3357 if (err)
3358 *bad_wr = ib_wr;
3359 return err;
3360 }
3361
3362
3363 /**
3364 * nes_post_recv
3365 */
3366 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3367 struct ib_recv_wr **bad_wr)
3368 {
3369 u64 u64temp;
3370 unsigned long flags = 0;
3371 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3372 struct nes_device *nesdev = nesvnic->nesdev;
3373 struct nes_qp *nesqp = to_nesqp(ibqp);
3374 struct nes_hw_qp_wqe *wqe;
3375 int err = 0;
3376 int sge_index;
3377 u32 qsize = nesqp->hwqp.rq_size;
3378 u32 head;
3379 u32 wqe_count = 0;
3380 u32 counter;
3381 u32 total_payload_length;
3382
3383 if (nesqp->ibqp_state > IB_QPS_RTS) {
3384 err = -EINVAL;
3385 goto out;
3386 }
3387
3388 spin_lock_irqsave(&nesqp->lock, flags);
3389
3390 head = nesqp->hwqp.rq_head;
3391
3392 while (ib_wr) {
3393 /* Check for QP error */
3394 if (nesqp->term_flags) {
3395 err = -EINVAL;
3396 break;
3397 }
3398
3399 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3400 err = -EINVAL;
3401 break;
3402 }
3403 /* Check for RQ overflow */
3404 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3405 err = -ENOMEM;
3406 break;
3407 }
3408
3409 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3410 wqe = &nesqp->hwqp.rq_vbase[head];
3411
3412 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3413 nesqp->hwqp.qp_id, wqe, head); */
3414 nes_fill_init_qp_wqe(wqe, nesqp, head);
3415 u64temp = (u64)(ib_wr->wr_id);
3416 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3417 u64temp);
3418 total_payload_length = 0;
3419 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3420 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3421 ib_wr->sg_list[sge_index].addr);
3422 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3423 ib_wr->sg_list[sge_index].length);
3424 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3425 ib_wr->sg_list[sge_index].lkey);
3426
3427 total_payload_length += ib_wr->sg_list[sge_index].length;
3428 }
3429 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3430 total_payload_length);
3431
3432 ib_wr = ib_wr->next;
3433 head++;
3434 wqe_count++;
3435 if (head >= qsize)
3436 head = 0;
3437 }
3438
3439 nesqp->hwqp.rq_head = head;
3440 barrier();
3441 while (wqe_count) {
3442 counter = min(wqe_count, ((u32)255));
3443 wqe_count -= counter;
3444 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3445 }
3446
3447 spin_unlock_irqrestore(&nesqp->lock, flags);
3448
3449 out:
3450 if (err)
3451 *bad_wr = ib_wr;
3452 return err;
3453 }
3454
3455
3456 /**
3457 * nes_poll_cq
3458 */
3459 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3460 {
3461 u64 u64temp;
3462 u64 wrid;
3463 unsigned long flags = 0;
3464 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3465 struct nes_device *nesdev = nesvnic->nesdev;
3466 struct nes_cq *nescq = to_nescq(ibcq);
3467 struct nes_qp *nesqp;
3468 struct nes_hw_cqe cqe;
3469 u32 head;
3470 u32 wq_tail = 0;
3471 u32 cq_size;
3472 u32 cqe_count = 0;
3473 u32 wqe_index;
3474 u32 u32temp;
3475 u32 move_cq_head = 1;
3476 u32 err_code;
3477
3478 nes_debug(NES_DBG_CQ, "\n");
3479
3480 spin_lock_irqsave(&nescq->lock, flags);
3481
3482 head = nescq->hw_cq.cq_head;
3483 cq_size = nescq->hw_cq.cq_size;
3484
3485 while (cqe_count < num_entries) {
3486 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3487 NES_CQE_VALID) == 0)
3488 break;
3489
3490 /*
3491 * Make sure we read CQ entry contents *after*
3492 * we've checked the valid bit.
3493 */
3494 rmb();
3495
3496 cqe = nescq->hw_cq.cq_vbase[head];
3497 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3498 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3499 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3500 /* parse CQE, get completion context from WQE (either rq or sq) */
3501 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3502 ((u64)u32temp);
3503
3504 if (u64temp) {
3505 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3506 memset(entry, 0, sizeof *entry);
3507 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3508 entry->status = IB_WC_SUCCESS;
3509 } else {
3510 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3511 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3512 entry->status = err_code & 0x0000ffff;
3513
3514 /* The rest of the cqe's will be marked as flushed */
3515 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3516 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3517 NES_IWARP_CQE_MINOR_FLUSH);
3518 } else
3519 entry->status = IB_WC_WR_FLUSH_ERR;
3520 }
3521
3522 entry->qp = &nesqp->ibqp;
3523 entry->src_qp = nesqp->hwqp.qp_id;
3524
3525 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3526 if (nesqp->skip_lsmm) {
3527 nesqp->skip_lsmm = 0;
3528 nesqp->hwqp.sq_tail++;
3529 }
3530
3531 /* Working on a SQ Completion*/
3532 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3533 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3534 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3535 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3536 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3537 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3538
3539 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3540 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3541 case NES_IWARP_SQ_OP_RDMAW:
3542 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3543 entry->opcode = IB_WC_RDMA_WRITE;
3544 break;
3545 case NES_IWARP_SQ_OP_RDMAR:
3546 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3547 entry->opcode = IB_WC_RDMA_READ;
3548 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3549 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3550 break;
3551 case NES_IWARP_SQ_OP_SENDINV:
3552 case NES_IWARP_SQ_OP_SENDSEINV:
3553 case NES_IWARP_SQ_OP_SEND:
3554 case NES_IWARP_SQ_OP_SENDSE:
3555 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3556 entry->opcode = IB_WC_SEND;
3557 break;
3558 case NES_IWARP_SQ_OP_LOCINV:
3559 entry->opcode = IB_WC_LOCAL_INV;
3560 break;
3561 case NES_IWARP_SQ_OP_FAST_REG:
3562 entry->opcode = IB_WC_REG_MR;
3563 break;
3564 }
3565
3566 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3567 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3568 move_cq_head = 0;
3569 wq_tail = nesqp->hwqp.sq_tail;
3570 }
3571 } else {
3572 /* Working on a RQ Completion*/
3573 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3574 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3575 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3576 entry->opcode = IB_WC_RECV;
3577
3578 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3579 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3580 move_cq_head = 0;
3581 wq_tail = nesqp->hwqp.rq_tail;
3582 }
3583 }
3584
3585 entry->wr_id = wrid;
3586 entry++;
3587 cqe_count++;
3588 }
3589
3590 if (move_cq_head) {
3591 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3592 if (++head >= cq_size)
3593 head = 0;
3594 nescq->polled_completions++;
3595
3596 if ((nescq->polled_completions > (cq_size / 2)) ||
3597 (nescq->polled_completions == 255)) {
3598 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3599 " are pending %u of %u.\n",
3600 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3601 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3602 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3603 nescq->polled_completions = 0;
3604 }
3605 } else {
3606 /* Update the wqe index and set status to flush */
3607 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3608 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3609 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3610 cpu_to_le32(wqe_index);
3611 move_cq_head = 1; /* ready for next pass */
3612 }
3613 }
3614
3615 if (nescq->polled_completions) {
3616 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3617 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3618 nescq->polled_completions = 0;
3619 }
3620
3621 nescq->hw_cq.cq_head = head;
3622 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3623 cqe_count, nescq->hw_cq.cq_number);
3624
3625 spin_unlock_irqrestore(&nescq->lock, flags);
3626
3627 return cqe_count;
3628 }
3629
3630
3631 /**
3632 * nes_req_notify_cq
3633 */
3634 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3635 {
3636 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3637 struct nes_device *nesdev = nesvnic->nesdev;
3638 struct nes_cq *nescq = to_nescq(ibcq);
3639 u32 cq_arm;
3640
3641 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3642 nescq->hw_cq.cq_number);
3643
3644 cq_arm = nescq->hw_cq.cq_number;
3645 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3646 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3647 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3648 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3649 else
3650 return -EINVAL;
3651
3652 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3653 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3654
3655 return 0;
3656 }
3657
3658 static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3659 struct ib_port_immutable *immutable)
3660 {
3661 struct ib_port_attr attr;
3662 int err;
3663
3664 err = nes_query_port(ibdev, port_num, &attr);
3665 if (err)
3666 return err;
3667
3668 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3669 immutable->gid_tbl_len = attr.gid_tbl_len;
3670 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
3671
3672 return 0;
3673 }
3674
3675 /**
3676 * nes_init_ofa_device
3677 */
3678 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3679 {
3680 struct nes_ib_device *nesibdev;
3681 struct nes_vnic *nesvnic = netdev_priv(netdev);
3682 struct nes_device *nesdev = nesvnic->nesdev;
3683
3684 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3685 if (nesibdev == NULL) {
3686 return NULL;
3687 }
3688 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3689 nesibdev->ibdev.owner = THIS_MODULE;
3690
3691 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3692 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3693 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3694
3695 nesibdev->ibdev.uverbs_cmd_mask =
3696 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3697 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3698 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3699 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3700 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3701 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3702 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3703 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3704 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3705 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3706 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3707 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3708 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3709 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3710 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3711 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3712 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3713 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3714 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3715 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3716 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3717 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3718
3719 nesibdev->ibdev.phys_port_cnt = 1;
3720 nesibdev->ibdev.num_comp_vectors = 1;
3721 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3722 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3723 nesibdev->ibdev.query_device = nes_query_device;
3724 nesibdev->ibdev.query_port = nes_query_port;
3725 nesibdev->ibdev.query_pkey = nes_query_pkey;
3726 nesibdev->ibdev.query_gid = nes_query_gid;
3727 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3728 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3729 nesibdev->ibdev.mmap = nes_mmap;
3730 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3731 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3732 nesibdev->ibdev.create_ah = nes_create_ah;
3733 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3734 nesibdev->ibdev.create_qp = nes_create_qp;
3735 nesibdev->ibdev.modify_qp = nes_modify_qp;
3736 nesibdev->ibdev.query_qp = nes_query_qp;
3737 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3738 nesibdev->ibdev.create_cq = nes_create_cq;
3739 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3740 nesibdev->ibdev.poll_cq = nes_poll_cq;
3741 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3742 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3743 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3744 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3745 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3746
3747 nesibdev->ibdev.alloc_mr = nes_alloc_mr;
3748 nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
3749
3750 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3751 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3752 nesibdev->ibdev.process_mad = nes_process_mad;
3753
3754 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3755 nesibdev->ibdev.post_send = nes_post_send;
3756 nesibdev->ibdev.post_recv = nes_post_recv;
3757
3758 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3759 if (nesibdev->ibdev.iwcm == NULL) {
3760 ib_dealloc_device(&nesibdev->ibdev);
3761 return NULL;
3762 }
3763 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3764 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3765 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3766 nesibdev->ibdev.iwcm->connect = nes_connect;
3767 nesibdev->ibdev.iwcm->accept = nes_accept;
3768 nesibdev->ibdev.iwcm->reject = nes_reject;
3769 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3770 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3771 nesibdev->ibdev.get_port_immutable = nes_port_immutable;
3772 memcpy(nesibdev->ibdev.iwcm->ifname, netdev->name,
3773 sizeof(nesibdev->ibdev.iwcm->ifname));
3774
3775 return nesibdev;
3776 }
3777
3778
3779 /**
3780 * nes_handle_delayed_event
3781 */
3782 static void nes_handle_delayed_event(unsigned long data)
3783 {
3784 struct nes_vnic *nesvnic = (void *) data;
3785
3786 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3787 struct ib_event event;
3788
3789 event.device = &nesvnic->nesibdev->ibdev;
3790 if (!event.device)
3791 goto stop_timer;
3792 event.event = nesvnic->delayed_event;
3793 event.element.port_num = nesvnic->logical_port + 1;
3794 ib_dispatch_event(&event);
3795 }
3796
3797 stop_timer:
3798 nesvnic->event_timer.function = NULL;
3799 }
3800
3801
3802 void nes_port_ibevent(struct nes_vnic *nesvnic)
3803 {
3804 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3805 struct nes_device *nesdev = nesvnic->nesdev;
3806 struct ib_event event;
3807 event.device = &nesibdev->ibdev;
3808 event.element.port_num = nesvnic->logical_port + 1;
3809 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3810
3811 if (!nesvnic->event_timer.function) {
3812 ib_dispatch_event(&event);
3813 nesvnic->last_dispatched_event = event.event;
3814 nesvnic->event_timer.function = nes_handle_delayed_event;
3815 nesvnic->event_timer.data = (unsigned long) nesvnic;
3816 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3817 add_timer(&nesvnic->event_timer);
3818 } else {
3819 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3820 }
3821 nesvnic->delayed_event = event.event;
3822 }
3823
3824
3825 /**
3826 * nes_destroy_ofa_device
3827 */
3828 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3829 {
3830 if (nesibdev == NULL)
3831 return;
3832
3833 nes_unregister_ofa_device(nesibdev);
3834
3835 kfree(nesibdev->ibdev.iwcm);
3836 ib_dealloc_device(&nesibdev->ibdev);
3837 }
3838
3839
3840 /**
3841 * nes_register_ofa_device
3842 */
3843 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3844 {
3845 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3846 struct nes_device *nesdev = nesvnic->nesdev;
3847 struct nes_adapter *nesadapter = nesdev->nesadapter;
3848 int i, ret;
3849
3850 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3851 if (ret) {
3852 return ret;
3853 }
3854
3855 /* Get the resources allocated to this device */
3856 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3857 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3858 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3859 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3860
3861 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3862 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3863 if (ret) {
3864 while (i > 0) {
3865 i--;
3866 device_remove_file(&nesibdev->ibdev.dev,
3867 nes_dev_attributes[i]);
3868 }
3869 ib_unregister_device(&nesibdev->ibdev);
3870 return ret;
3871 }
3872 }
3873
3874 nesvnic->of_device_registered = 1;
3875
3876 return 0;
3877 }
3878
3879
3880 /**
3881 * nes_unregister_ofa_device
3882 */
3883 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3884 {
3885 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3886 int i;
3887
3888 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3889 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3890 }
3891
3892 if (nesvnic->of_device_registered) {
3893 ib_unregister_device(&nesibdev->ibdev);
3894 }
3895
3896 nesvnic->of_device_registered = 0;
3897 }
Linux with added FPC-III support