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 */
nes_alloc_mw(struct ib_pd * ibpd,enum ib_mw_type type)59 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type)
60 {
61 struct nes_pd *nespd = to_nespd(ibpd);
62 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
63 struct nes_device *nesdev = nesvnic->nesdev;
64 struct nes_adapter *nesadapter = nesdev->nesadapter;
65 struct nes_cqp_request *cqp_request;
66 struct nes_mr *nesmr;
67 struct ib_mw *ibmw;
68 struct nes_hw_cqp_wqe *cqp_wqe;
69 int ret;
70 u32 stag;
71 u32 stag_index = 0;
72 u32 next_stag_index = 0;
73 u32 driver_key = 0;
74 u8 stag_key = 0;
75
76 if (type != IB_MW_TYPE_1)
77 return ERR_PTR(-EINVAL);
78
79 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
80 stag_key = (u8)next_stag_index;
81
82 driver_key = 0;
83
84 next_stag_index >>= 8;
85 next_stag_index %= nesadapter->max_mr;
86
87 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
88 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_MW);
89 if (ret) {
90 return ERR_PTR(ret);
91 }
92
93 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
94 if (!nesmr) {
95 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
96 return ERR_PTR(-ENOMEM);
97 }
98
99 stag = stag_index << 8;
100 stag |= driver_key;
101 stag += (u32)stag_key;
102
103 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
104 stag, stag_index);
105
106 /* Register the region with the adapter */
107 cqp_request = nes_get_cqp_request(nesdev);
108 if (cqp_request == NULL) {
109 kfree(nesmr);
110 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
111 return ERR_PTR(-ENOMEM);
112 }
113
114 cqp_request->waiting = 1;
115 cqp_wqe = &cqp_request->cqp_wqe;
116
117 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
118 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
119 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
120 NES_CQP_STAG_REM_ACC_EN);
121
122 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
123 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
124 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
125
126 atomic_set(&cqp_request->refcount, 2);
127 nes_post_cqp_request(nesdev, cqp_request);
128
129 /* Wait for CQP */
130 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
131 NES_EVENT_TIMEOUT);
132 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
133 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
134 stag, ret, cqp_request->major_code, cqp_request->minor_code);
135 if ((!ret) || (cqp_request->major_code)) {
136 nes_put_cqp_request(nesdev, cqp_request);
137 kfree(nesmr);
138 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
139 if (!ret) {
140 return ERR_PTR(-ETIME);
141 } else {
142 return ERR_PTR(-ENOMEM);
143 }
144 }
145 nes_put_cqp_request(nesdev, cqp_request);
146
147 nesmr->ibmw.rkey = stag;
148 nesmr->mode = IWNES_MEMREG_TYPE_MW;
149 ibmw = &nesmr->ibmw;
150 nesmr->pbl_4k = 0;
151 nesmr->pbls_used = 0;
152
153 return ibmw;
154 }
155
156
157 /**
158 * nes_dealloc_mw
159 */
nes_dealloc_mw(struct ib_mw * ibmw)160 static int nes_dealloc_mw(struct ib_mw *ibmw)
161 {
162 struct nes_mr *nesmr = to_nesmw(ibmw);
163 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
164 struct nes_device *nesdev = nesvnic->nesdev;
165 struct nes_adapter *nesadapter = nesdev->nesadapter;
166 struct nes_hw_cqp_wqe *cqp_wqe;
167 struct nes_cqp_request *cqp_request;
168 int err = 0;
169 int ret;
170
171 /* Deallocate the window with the adapter */
172 cqp_request = nes_get_cqp_request(nesdev);
173 if (cqp_request == NULL) {
174 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
175 return -ENOMEM;
176 }
177 cqp_request->waiting = 1;
178 cqp_wqe = &cqp_request->cqp_wqe;
179 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
180 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
181 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
182
183 atomic_set(&cqp_request->refcount, 2);
184 nes_post_cqp_request(nesdev, cqp_request);
185
186 /* Wait for CQP */
187 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
188 ibmw->rkey);
189 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
190 NES_EVENT_TIMEOUT);
191 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
192 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
193 ret, cqp_request->major_code, cqp_request->minor_code);
194 if (!ret)
195 err = -ETIME;
196 else if (cqp_request->major_code)
197 err = -EIO;
198
199 nes_put_cqp_request(nesdev, cqp_request);
200
201 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
202 (ibmw->rkey & 0x0fffff00) >> 8);
203 kfree(nesmr);
204
205 return err;
206 }
207
208
209 /**
210 * nes_bind_mw
211 */
nes_bind_mw(struct ib_qp * ibqp,struct ib_mw * ibmw,struct ib_mw_bind * ibmw_bind)212 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
213 struct ib_mw_bind *ibmw_bind)
214 {
215 u64 u64temp;
216 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
217 struct nes_device *nesdev = nesvnic->nesdev;
218 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
219 struct nes_qp *nesqp = to_nesqp(ibqp);
220 struct nes_hw_qp_wqe *wqe;
221 unsigned long flags = 0;
222 u32 head;
223 u32 wqe_misc = 0;
224 u32 qsize;
225
226 if (nesqp->ibqp_state > IB_QPS_RTS)
227 return -EINVAL;
228
229 spin_lock_irqsave(&nesqp->lock, flags);
230
231 head = nesqp->hwqp.sq_head;
232 qsize = nesqp->hwqp.sq_tail;
233
234 /* Check for SQ overflow */
235 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
236 spin_unlock_irqrestore(&nesqp->lock, flags);
237 return -ENOMEM;
238 }
239
240 wqe = &nesqp->hwqp.sq_vbase[head];
241 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
242 nes_fill_init_qp_wqe(wqe, nesqp, head);
243 u64temp = ibmw_bind->wr_id;
244 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
245 wqe_misc = NES_IWARP_SQ_OP_BIND;
246
247 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
248
249 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
250 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
251
252 if (ibmw_bind->bind_info.mw_access_flags & IB_ACCESS_REMOTE_WRITE)
253 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
254 if (ibmw_bind->bind_info.mw_access_flags & IB_ACCESS_REMOTE_READ)
255 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
256
257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
258 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX,
259 ibmw_bind->bind_info.mr->lkey);
260 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
261 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
262 ibmw_bind->bind_info.length);
263 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
264 u64temp = (u64)ibmw_bind->bind_info.addr;
265 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
266
267 head++;
268 if (head >= qsize)
269 head = 0;
270
271 nesqp->hwqp.sq_head = head;
272 barrier();
273
274 nes_write32(nesdev->regs+NES_WQE_ALLOC,
275 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
276
277 spin_unlock_irqrestore(&nesqp->lock, flags);
278
279 return 0;
280 }
281
282
283 /*
284 * nes_alloc_fast_mr
285 */
alloc_fast_reg_mr(struct nes_device * nesdev,struct nes_pd * nespd,u32 stag,u32 page_count)286 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
287 u32 stag, u32 page_count)
288 {
289 struct nes_hw_cqp_wqe *cqp_wqe;
290 struct nes_cqp_request *cqp_request;
291 unsigned long flags;
292 int ret;
293 struct nes_adapter *nesadapter = nesdev->nesadapter;
294 u32 opcode = 0;
295 u16 major_code;
296 u64 region_length = page_count * PAGE_SIZE;
297
298
299 cqp_request = nes_get_cqp_request(nesdev);
300 if (cqp_request == NULL) {
301 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
302 return -ENOMEM;
303 }
304 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
305 "region_length = %llu\n",
306 page_count, region_length);
307 cqp_request->waiting = 1;
308 cqp_wqe = &cqp_request->cqp_wqe;
309
310 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
311 if (nesadapter->free_4kpbl > 0) {
312 nesadapter->free_4kpbl--;
313 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
314 } else {
315 /* No 4kpbl's available: */
316 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
317 nes_debug(NES_DBG_MR, "Out of Pbls\n");
318 nes_free_cqp_request(nesdev, cqp_request);
319 return -ENOMEM;
320 }
321
322 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
323 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
324 NES_CQP_STAG_REM_ACC_EN;
325 /*
326 * The current OFED API does not support the zero based TO option.
327 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
328 * the API does not support that ability to have the MR set for local
329 * access only when created and not allow the SQ op to override. Given
330 * this the remote enable must be set here.
331 */
332
333 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
334 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
335 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
336
337 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
338 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
339 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
340 cpu_to_le32(nespd->pd_id & 0x00007fff);
341
342 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
343 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
344 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
345 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
346 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
347 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
348 barrier();
349
350 atomic_set(&cqp_request->refcount, 2);
351 nes_post_cqp_request(nesdev, cqp_request);
352
353 /* Wait for CQP */
354 ret = wait_event_timeout(cqp_request->waitq,
355 (0 != cqp_request->request_done),
356 NES_EVENT_TIMEOUT);
357
358 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
359 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
360 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
361 cqp_request->minor_code);
362 major_code = cqp_request->major_code;
363 nes_put_cqp_request(nesdev, cqp_request);
364
365 if (!ret || major_code) {
366 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
367 nesadapter->free_4kpbl++;
368 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
369 }
370
371 if (!ret)
372 return -ETIME;
373 else if (major_code)
374 return -EIO;
375 return 0;
376 }
377
378 /*
379 * nes_alloc_mr
380 */
nes_alloc_mr(struct ib_pd * ibpd,enum ib_mr_type mr_type,u32 max_num_sg)381 static struct ib_mr *nes_alloc_mr(struct ib_pd *ibpd,
382 enum ib_mr_type mr_type,
383 u32 max_num_sg)
384 {
385 struct nes_pd *nespd = to_nespd(ibpd);
386 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
387 struct nes_device *nesdev = nesvnic->nesdev;
388 struct nes_adapter *nesadapter = nesdev->nesadapter;
389
390 u32 next_stag_index;
391 u8 stag_key = 0;
392 u32 driver_key = 0;
393 int err = 0;
394 u32 stag_index = 0;
395 struct nes_mr *nesmr;
396 u32 stag;
397 int ret;
398 struct ib_mr *ibmr;
399
400 if (mr_type != IB_MR_TYPE_MEM_REG)
401 return ERR_PTR(-EINVAL);
402
403 if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
404 return ERR_PTR(-E2BIG);
405
406 /*
407 * Note: Set to always use a fixed length single page entry PBL. This is to allow
408 * for the fast_reg_mr operation to always know the size of the PBL.
409 */
410 if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
411 return ERR_PTR(-E2BIG);
412
413 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
414 stag_key = (u8)next_stag_index;
415 next_stag_index >>= 8;
416 next_stag_index %= nesadapter->max_mr;
417
418 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
419 nesadapter->max_mr, &stag_index,
420 &next_stag_index, NES_RESOURCE_FAST_MR);
421 if (err)
422 return ERR_PTR(err);
423
424 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
425 if (!nesmr) {
426 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
427 return ERR_PTR(-ENOMEM);
428 }
429
430 stag = stag_index << 8;
431 stag |= driver_key;
432 stag += (u32)stag_key;
433
434 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
435 stag, stag_index);
436
437 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_num_sg);
438
439 if (ret == 0) {
440 nesmr->ibmr.rkey = stag;
441 nesmr->ibmr.lkey = stag;
442 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
443 ibmr = &nesmr->ibmr;
444 } else {
445 kfree(nesmr);
446 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
447 return ERR_PTR(-ENOMEM);
448 }
449
450 nesmr->pages = pci_alloc_consistent(nesdev->pcidev,
451 max_num_sg * sizeof(u64),
452 &nesmr->paddr);
453 if (!nesmr->paddr)
454 goto err;
455
456 nesmr->max_pages = max_num_sg;
457
458 return ibmr;
459
460 err:
461 nes_dereg_mr(ibmr);
462
463 return ERR_PTR(-ENOMEM);
464 }
465
nes_set_page(struct ib_mr * ibmr,u64 addr)466 static int nes_set_page(struct ib_mr *ibmr, u64 addr)
467 {
468 struct nes_mr *nesmr = to_nesmr(ibmr);
469
470 if (unlikely(nesmr->npages == nesmr->max_pages))
471 return -ENOMEM;
472
473 nesmr->pages[nesmr->npages++] = cpu_to_le64(addr);
474
475 return 0;
476 }
477
nes_map_mr_sg(struct ib_mr * ibmr,struct scatterlist * sg,int sg_nents)478 static int nes_map_mr_sg(struct ib_mr *ibmr,
479 struct scatterlist *sg,
480 int sg_nents)
481 {
482 struct nes_mr *nesmr = to_nesmr(ibmr);
483
484 nesmr->npages = 0;
485
486 return ib_sg_to_pages(ibmr, sg, sg_nents, nes_set_page);
487 }
488
489 /**
490 * nes_query_device
491 */
nes_query_device(struct ib_device * ibdev,struct ib_device_attr * props,struct ib_udata * uhw)492 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
493 struct ib_udata *uhw)
494 {
495 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
496 struct nes_device *nesdev = nesvnic->nesdev;
497 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
498
499 if (uhw->inlen || uhw->outlen)
500 return -EINVAL;
501
502 memset(props, 0, sizeof(*props));
503 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
504
505 props->fw_ver = nesdev->nesadapter->firmware_version;
506 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
507 props->vendor_id = nesdev->nesadapter->vendor_id;
508 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
509 props->hw_ver = nesdev->nesadapter->hw_rev;
510 props->max_mr_size = 0x80000000;
511 props->max_qp = nesibdev->max_qp;
512 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
513 props->max_sge = nesdev->nesadapter->max_sge;
514 props->max_cq = nesibdev->max_cq;
515 props->max_cqe = nesdev->nesadapter->max_cqe;
516 props->max_mr = nesibdev->max_mr;
517 props->max_mw = nesibdev->max_mr;
518 props->max_pd = nesibdev->max_pd;
519 props->max_sge_rd = 1;
520 switch (nesdev->nesadapter->max_irrq_wr) {
521 case 0:
522 props->max_qp_rd_atom = 2;
523 break;
524 case 1:
525 props->max_qp_rd_atom = 8;
526 break;
527 case 2:
528 props->max_qp_rd_atom = 32;
529 break;
530 case 3:
531 props->max_qp_rd_atom = 64;
532 break;
533 default:
534 props->max_qp_rd_atom = 0;
535 }
536 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
537 props->atomic_cap = IB_ATOMIC_NONE;
538 props->max_map_per_fmr = 1;
539
540 return 0;
541 }
542
543
544 /**
545 * nes_query_port
546 */
nes_query_port(struct ib_device * ibdev,u8 port,struct ib_port_attr * props)547 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
548 {
549 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
550 struct net_device *netdev = nesvnic->netdev;
551
552 memset(props, 0, sizeof(*props));
553
554 props->max_mtu = IB_MTU_4096;
555
556 if (netdev->mtu >= 4096)
557 props->active_mtu = IB_MTU_4096;
558 else if (netdev->mtu >= 2048)
559 props->active_mtu = IB_MTU_2048;
560 else if (netdev->mtu >= 1024)
561 props->active_mtu = IB_MTU_1024;
562 else if (netdev->mtu >= 512)
563 props->active_mtu = IB_MTU_512;
564 else
565 props->active_mtu = IB_MTU_256;
566
567 props->lid = 1;
568 props->lmc = 0;
569 props->sm_lid = 0;
570 props->sm_sl = 0;
571 if (netif_queue_stopped(netdev))
572 props->state = IB_PORT_DOWN;
573 else if (nesvnic->linkup)
574 props->state = IB_PORT_ACTIVE;
575 else
576 props->state = IB_PORT_DOWN;
577 props->phys_state = 0;
578 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
579 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
580 props->gid_tbl_len = 1;
581 props->pkey_tbl_len = 1;
582 props->qkey_viol_cntr = 0;
583 props->active_width = IB_WIDTH_4X;
584 props->active_speed = IB_SPEED_SDR;
585 props->max_msg_sz = 0x80000000;
586
587 return 0;
588 }
589
590 /**
591 * nes_query_pkey
592 */
nes_query_pkey(struct ib_device * ibdev,u8 port,u16 index,u16 * pkey)593 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
594 {
595 *pkey = 0;
596 return 0;
597 }
598
599
600 /**
601 * nes_query_gid
602 */
nes_query_gid(struct ib_device * ibdev,u8 port,int index,union ib_gid * gid)603 static int nes_query_gid(struct ib_device *ibdev, u8 port,
604 int index, union ib_gid *gid)
605 {
606 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
607
608 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
609 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
610
611 return 0;
612 }
613
614
615 /**
616 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
617 * of all objects associated with a particular user-mode client.
618 */
nes_alloc_ucontext(struct ib_device * ibdev,struct ib_udata * udata)619 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
620 struct ib_udata *udata)
621 {
622 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
623 struct nes_device *nesdev = nesvnic->nesdev;
624 struct nes_adapter *nesadapter = nesdev->nesadapter;
625 struct nes_alloc_ucontext_req req;
626 struct nes_alloc_ucontext_resp uresp;
627 struct nes_ucontext *nes_ucontext;
628 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
629
630
631 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
632 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
633 return ERR_PTR(-EINVAL);
634 }
635
636 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
637 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
638 req.userspace_ver, NES_ABI_USERSPACE_VER);
639 return ERR_PTR(-EINVAL);
640 }
641
642
643 memset(&uresp, 0, sizeof uresp);
644
645 uresp.max_qps = nesibdev->max_qp;
646 uresp.max_pds = nesibdev->max_pd;
647 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
648 uresp.virtwq = nesadapter->virtwq;
649 uresp.kernel_ver = NES_ABI_KERNEL_VER;
650
651 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
652 if (!nes_ucontext)
653 return ERR_PTR(-ENOMEM);
654
655 nes_ucontext->nesdev = nesdev;
656 nes_ucontext->mmap_wq_offset = uresp.max_pds;
657 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
658 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
659 PAGE_SIZE;
660
661
662 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
663 kfree(nes_ucontext);
664 return ERR_PTR(-EFAULT);
665 }
666
667 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
668 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
669 atomic_set(&nes_ucontext->usecnt, 1);
670 return &nes_ucontext->ibucontext;
671 }
672
673
674 /**
675 * nes_dealloc_ucontext
676 */
nes_dealloc_ucontext(struct ib_ucontext * context)677 static int nes_dealloc_ucontext(struct ib_ucontext *context)
678 {
679 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
680 /* struct nes_device *nesdev = nesvnic->nesdev; */
681 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
682
683 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
684 return 0;
685 kfree(nes_ucontext);
686 return 0;
687 }
688
689
690 /**
691 * nes_mmap
692 */
nes_mmap(struct ib_ucontext * context,struct vm_area_struct * vma)693 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
694 {
695 unsigned long index;
696 struct nes_vnic *nesvnic = to_nesvnic(context->device);
697 struct nes_device *nesdev = nesvnic->nesdev;
698 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
699 struct nes_ucontext *nes_ucontext;
700 struct nes_qp *nesqp;
701
702 nes_ucontext = to_nesucontext(context);
703
704
705 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
706 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
707 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
708 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
709 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
710 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
711 return -EFAULT;
712 }
713 nesqp = nes_ucontext->mmap_nesqp[index];
714 if (nesqp == NULL) {
715 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
716 return -EFAULT;
717 }
718 if (remap_pfn_range(vma, vma->vm_start,
719 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
720 vma->vm_end - vma->vm_start,
721 vma->vm_page_prot)) {
722 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
723 return -EAGAIN;
724 }
725 vma->vm_private_data = nesqp;
726 return 0;
727 } else {
728 index = vma->vm_pgoff;
729 if (!test_bit(index, nes_ucontext->allocated_doorbells))
730 return -EFAULT;
731
732 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
733 if (io_remap_pfn_range(vma, vma->vm_start,
734 (nesdev->doorbell_start +
735 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
736 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
737 return -EAGAIN;
738 vma->vm_private_data = nes_ucontext;
739 return 0;
740 }
741
742 return -ENOSYS;
743 }
744
745
746 /**
747 * nes_alloc_pd
748 */
nes_alloc_pd(struct ib_device * ibdev,struct ib_ucontext * context,struct ib_udata * udata)749 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
750 struct ib_ucontext *context, struct ib_udata *udata)
751 {
752 struct nes_pd *nespd;
753 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
754 struct nes_device *nesdev = nesvnic->nesdev;
755 struct nes_adapter *nesadapter = nesdev->nesadapter;
756 struct nes_ucontext *nesucontext;
757 struct nes_alloc_pd_resp uresp;
758 u32 pd_num = 0;
759 int err;
760
761 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
762 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
763 netdev_refcnt_read(nesvnic->netdev));
764
765 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
766 nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
767 if (err) {
768 return ERR_PTR(err);
769 }
770
771 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
772 if (!nespd) {
773 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
774 return ERR_PTR(-ENOMEM);
775 }
776
777 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
778 nespd, nesvnic->nesibdev->ibdev.name);
779
780 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
781
782 if (context) {
783 nesucontext = to_nesucontext(context);
784 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
785 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
786 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
787 nespd->mmap_db_index, nespd->pd_id);
788 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
789 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
790 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
791 kfree(nespd);
792 return ERR_PTR(-ENOMEM);
793 }
794
795 uresp.pd_id = nespd->pd_id;
796 uresp.mmap_db_index = nespd->mmap_db_index;
797 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
798 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
799 kfree(nespd);
800 return ERR_PTR(-EFAULT);
801 }
802
803 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
804 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
805 nesucontext->first_free_db = nespd->mmap_db_index + 1;
806 }
807
808 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
809 return &nespd->ibpd;
810 }
811
812
813 /**
814 * nes_dealloc_pd
815 */
nes_dealloc_pd(struct ib_pd * ibpd)816 static int nes_dealloc_pd(struct ib_pd *ibpd)
817 {
818 struct nes_ucontext *nesucontext;
819 struct nes_pd *nespd = to_nespd(ibpd);
820 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
821 struct nes_device *nesdev = nesvnic->nesdev;
822 struct nes_adapter *nesadapter = nesdev->nesadapter;
823
824 if ((ibpd->uobject) && (ibpd->uobject->context)) {
825 nesucontext = to_nesucontext(ibpd->uobject->context);
826 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
827 nespd->mmap_db_index);
828 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
829 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
830 if (nesucontext->first_free_db > nespd->mmap_db_index) {
831 nesucontext->first_free_db = nespd->mmap_db_index;
832 }
833 }
834
835 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
836 nespd->pd_id, nespd);
837 nes_free_resource(nesadapter, nesadapter->allocated_pds,
838 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
839 kfree(nespd);
840
841 return 0;
842 }
843
844
845 /**
846 * nes_create_ah
847 */
nes_create_ah(struct ib_pd * pd,struct ib_ah_attr * ah_attr)848 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
849 {
850 return ERR_PTR(-ENOSYS);
851 }
852
853
854 /**
855 * nes_destroy_ah
856 */
nes_destroy_ah(struct ib_ah * ah)857 static int nes_destroy_ah(struct ib_ah *ah)
858 {
859 return -ENOSYS;
860 }
861
862
863 /**
864 * nes_get_encoded_size
865 */
nes_get_encoded_size(int * size)866 static inline u8 nes_get_encoded_size(int *size)
867 {
868 u8 encoded_size = 0;
869 if (*size <= 32) {
870 *size = 32;
871 encoded_size = 1;
872 } else if (*size <= 128) {
873 *size = 128;
874 encoded_size = 2;
875 } else if (*size <= 512) {
876 *size = 512;
877 encoded_size = 3;
878 }
879 return (encoded_size);
880 }
881
882
883
884 /**
885 * nes_setup_virt_qp
886 */
nes_setup_virt_qp(struct nes_qp * nesqp,struct nes_pbl * nespbl,struct nes_vnic * nesvnic,int sq_size,int rq_size)887 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
888 struct nes_vnic *nesvnic, int sq_size, int rq_size)
889 {
890 unsigned long flags;
891 void *mem;
892 __le64 *pbl = NULL;
893 __le64 *tpbl;
894 __le64 *pblbuffer;
895 struct nes_device *nesdev = nesvnic->nesdev;
896 struct nes_adapter *nesadapter = nesdev->nesadapter;
897 u32 pbl_entries;
898 u8 rq_pbl_entries;
899 u8 sq_pbl_entries;
900
901 pbl_entries = nespbl->pbl_size >> 3;
902 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
903 nespbl->pbl_size, pbl_entries,
904 (void *)nespbl->pbl_vbase,
905 (unsigned long) nespbl->pbl_pbase);
906 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
907 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
908 /* the first pbl to be fro the rq_vbase... */
909 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
910 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
911 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
912 if (!nespbl->page) {
913 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
914 kfree(nespbl);
915 return -ENOMEM;
916 }
917
918 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
919 nesqp->page = nespbl->page;
920 if (!nesqp->hwqp.sq_vbase) {
921 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
922 kfree(nespbl);
923 return -ENOMEM;
924 }
925
926 /* Now to get to sq.. we need to calculate how many */
927 /* PBL entries were used by the rq.. */
928 pbl += sq_pbl_entries;
929 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
930 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
931 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
932
933 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
934 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
935 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
936 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
937 if (!nesadapter->free_256pbl) {
938 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
939 nespbl->pbl_pbase);
940 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
941 kunmap(nesqp->page);
942 kfree(nespbl);
943 return -ENOMEM;
944 }
945 nesadapter->free_256pbl--;
946 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
947
948 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
949 pblbuffer = nesqp->pbl_vbase;
950 if (!nesqp->pbl_vbase) {
951 /* memory allocated during nes_reg_user_mr() */
952 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
953 nespbl->pbl_pbase);
954 kfree(nespbl);
955 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
956 nesadapter->free_256pbl++;
957 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
958 kunmap(nesqp->page);
959 return -ENOMEM;
960 }
961 memset(nesqp->pbl_vbase, 0, 256);
962 /* fill in the page address in the pbl buffer.. */
963 tpbl = pblbuffer + 16;
964 pbl = (__le64 *)nespbl->pbl_vbase;
965 while (sq_pbl_entries--)
966 *tpbl++ = *pbl++;
967 tpbl = pblbuffer;
968 while (rq_pbl_entries--)
969 *tpbl++ = *pbl++;
970
971 /* done with memory allocated during nes_reg_user_mr() */
972 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
973 nespbl->pbl_pbase);
974 kfree(nespbl);
975
976 nesqp->qp_mem_size =
977 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
978 /* Round up to a multiple of a page */
979 nesqp->qp_mem_size += PAGE_SIZE - 1;
980 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
981
982 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
983 &nesqp->hwqp.q2_pbase);
984
985 if (!mem) {
986 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
987 nesqp->pbl_vbase = NULL;
988 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
989 nesadapter->free_256pbl++;
990 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
991 kunmap(nesqp->page);
992 return -ENOMEM;
993 }
994 nesqp->sq_kmapped = 1;
995 nesqp->hwqp.q2_vbase = mem;
996 mem += 256;
997 memset(nesqp->hwqp.q2_vbase, 0, 256);
998 nesqp->nesqp_context = mem;
999 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1000 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1001
1002 return 0;
1003 }
1004
1005
1006 /**
1007 * nes_setup_mmap_qp
1008 */
nes_setup_mmap_qp(struct nes_qp * nesqp,struct nes_vnic * nesvnic,int sq_size,int rq_size)1009 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1010 int sq_size, int rq_size)
1011 {
1012 void *mem;
1013 struct nes_device *nesdev = nesvnic->nesdev;
1014
1015 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1016 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1017 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1018 256; /* this is Q2 */
1019 /* Round up to a multiple of a page */
1020 nesqp->qp_mem_size += PAGE_SIZE - 1;
1021 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1022
1023 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1024 &nesqp->hwqp.sq_pbase);
1025 if (!mem)
1026 return -ENOMEM;
1027 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1028 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1029 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1030
1031 memset(mem, 0, nesqp->qp_mem_size);
1032
1033 nesqp->hwqp.sq_vbase = mem;
1034 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1035
1036 nesqp->hwqp.rq_vbase = mem;
1037 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1038 sizeof(struct nes_hw_qp_wqe) * sq_size;
1039 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1040
1041 nesqp->hwqp.q2_vbase = mem;
1042 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1043 sizeof(struct nes_hw_qp_wqe) * rq_size;
1044 mem += 256;
1045 memset(nesqp->hwqp.q2_vbase, 0, 256);
1046
1047 nesqp->nesqp_context = mem;
1048 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1049 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1050 return 0;
1051 }
1052
1053
1054 /**
1055 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1056 */
nes_free_qp_mem(struct nes_device * nesdev,struct nes_qp * nesqp,int virt_wqs)1057 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1058 struct nes_qp *nesqp, int virt_wqs)
1059 {
1060 unsigned long flags;
1061 struct nes_adapter *nesadapter = nesdev->nesadapter;
1062 if (!virt_wqs) {
1063 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1064 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1065 }else {
1066 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1067 nesadapter->free_256pbl++;
1068 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1069 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1070 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1071 nesqp->pbl_vbase = NULL;
1072 if (nesqp->sq_kmapped) {
1073 nesqp->sq_kmapped = 0;
1074 kunmap(nesqp->page);
1075 }
1076 }
1077 }
1078
1079
1080 /**
1081 * nes_create_qp
1082 */
nes_create_qp(struct ib_pd * ibpd,struct ib_qp_init_attr * init_attr,struct ib_udata * udata)1083 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1084 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1085 {
1086 u64 u64temp= 0;
1087 u64 u64nesqp = 0;
1088 struct nes_pd *nespd = to_nespd(ibpd);
1089 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1090 struct nes_device *nesdev = nesvnic->nesdev;
1091 struct nes_adapter *nesadapter = nesdev->nesadapter;
1092 struct nes_qp *nesqp;
1093 struct nes_cq *nescq;
1094 struct nes_ucontext *nes_ucontext;
1095 struct nes_hw_cqp_wqe *cqp_wqe;
1096 struct nes_cqp_request *cqp_request;
1097 struct nes_create_qp_req req;
1098 struct nes_create_qp_resp uresp;
1099 struct nes_pbl *nespbl = NULL;
1100 u32 qp_num = 0;
1101 u32 opcode = 0;
1102 /* u32 counter = 0; */
1103 void *mem;
1104 unsigned long flags;
1105 int ret;
1106 int err;
1107 int virt_wqs = 0;
1108 int sq_size;
1109 int rq_size;
1110 u8 sq_encoded_size;
1111 u8 rq_encoded_size;
1112 /* int counter; */
1113
1114 if (init_attr->create_flags)
1115 return ERR_PTR(-EINVAL);
1116
1117 atomic_inc(&qps_created);
1118 switch (init_attr->qp_type) {
1119 case IB_QPT_RC:
1120 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1121 init_attr->cap.max_inline_data = 0;
1122 } else {
1123 init_attr->cap.max_inline_data = 64;
1124 }
1125 sq_size = init_attr->cap.max_send_wr;
1126 rq_size = init_attr->cap.max_recv_wr;
1127
1128 /* check if the encoded sizes are OK or not... */
1129 sq_encoded_size = nes_get_encoded_size(&sq_size);
1130 rq_encoded_size = nes_get_encoded_size(&rq_size);
1131
1132 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1133 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1134 rq_size, sq_size);
1135 return ERR_PTR(-EINVAL);
1136 }
1137
1138 init_attr->cap.max_send_wr = sq_size -2;
1139 init_attr->cap.max_recv_wr = rq_size -1;
1140 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1141
1142 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1143 nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
1144 if (ret) {
1145 return ERR_PTR(ret);
1146 }
1147
1148 /* Need 512 (actually now 1024) byte alignment on this structure */
1149 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1150 if (!mem) {
1151 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1152 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1153 return ERR_PTR(-ENOMEM);
1154 }
1155 u64nesqp = (unsigned long)mem;
1156 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1157 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1158 u64nesqp &= ~u64temp;
1159 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1160 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1161 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1162 nesqp->allocated_buffer = mem;
1163
1164 if (udata) {
1165 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1166 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1167 kfree(nesqp->allocated_buffer);
1168 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1169 return ERR_PTR(-EFAULT);
1170 }
1171 if (req.user_wqe_buffers) {
1172 virt_wqs = 1;
1173 }
1174 if (req.user_qp_buffer)
1175 nesqp->nesuqp_addr = req.user_qp_buffer;
1176 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1177 nesqp->user_mode = 1;
1178 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1179 if (virt_wqs) {
1180 err = 1;
1181 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1182 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1183 list_del(&nespbl->list);
1184 err = 0;
1185 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1186 nespbl, nespbl->user_base);
1187 break;
1188 }
1189 }
1190 if (err) {
1191 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1192 (long long unsigned int)req.user_wqe_buffers);
1193 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1194 kfree(nesqp->allocated_buffer);
1195 return ERR_PTR(-EFAULT);
1196 }
1197 }
1198
1199 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1200 nesqp->mmap_sq_db_index =
1201 find_next_zero_bit(nes_ucontext->allocated_wqs,
1202 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1203 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1204 nespd->mmap_db_index); */
1205 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1206 nes_debug(NES_DBG_QP,
1207 "db index > max user regions, failing create QP\n");
1208 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1209 if (virt_wqs) {
1210 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1211 nespbl->pbl_pbase);
1212 kfree(nespbl);
1213 }
1214 kfree(nesqp->allocated_buffer);
1215 return ERR_PTR(-ENOMEM);
1216 }
1217 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1218 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1219 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1220 } else {
1221 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1222 kfree(nesqp->allocated_buffer);
1223 return ERR_PTR(-EFAULT);
1224 }
1225 }
1226 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1227 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1228 if (err) {
1229 nes_debug(NES_DBG_QP,
1230 "error geting qp mem code = %d\n", err);
1231 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1232 kfree(nesqp->allocated_buffer);
1233 return ERR_PTR(-ENOMEM);
1234 }
1235
1236 nesqp->hwqp.sq_size = sq_size;
1237 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1238 nesqp->hwqp.sq_head = 1;
1239 nesqp->hwqp.rq_size = rq_size;
1240 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1241 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1242 (void *)nesqp->nesqp_context_pbase);
1243 */
1244 nesqp->hwqp.qp_id = qp_num;
1245 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1246 nesqp->nespd = nespd;
1247
1248 nescq = to_nescq(init_attr->send_cq);
1249 nesqp->nesscq = nescq;
1250 nescq = to_nescq(init_attr->recv_cq);
1251 nesqp->nesrcq = nescq;
1252
1253 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1254 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1255 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1256 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1257 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1258 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1259 if (!udata) {
1260 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1261 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1262 }
1263 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1264 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1265 u64temp = (u64)nesqp->hwqp.sq_pbase;
1266 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1267 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1268
1269
1270 if (!virt_wqs) {
1271 u64temp = (u64)nesqp->hwqp.sq_pbase;
1272 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1273 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1274 u64temp = (u64)nesqp->hwqp.rq_pbase;
1275 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1276 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1277 } else {
1278 u64temp = (u64)nesqp->pbl_pbase;
1279 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1280 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1281 }
1282
1283 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1284 nesvnic->next_qp_nic_index,
1285 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1286 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1287 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1288 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1289 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1290 nesvnic->next_qp_nic_index++;
1291 if ((nesvnic->next_qp_nic_index > 3) ||
1292 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1293 nesvnic->next_qp_nic_index = 0;
1294 }
1295 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1296
1297 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1298 u64temp = (u64)nesqp->hwqp.q2_pbase;
1299 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1300 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1301 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1302 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1303 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1304 NES_QPCONTEXT_ORDIRD_AAH |
1305 ((((u32)nesadapter->max_irrq_wr) <<
1306 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1307 if (disable_mpa_crc) {
1308 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1309 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1310 }
1311
1312
1313 /* Create the QP */
1314 cqp_request = nes_get_cqp_request(nesdev);
1315 if (cqp_request == NULL) {
1316 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1317 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1318 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1319 kfree(nesqp->allocated_buffer);
1320 return ERR_PTR(-ENOMEM);
1321 }
1322 cqp_request->waiting = 1;
1323 cqp_wqe = &cqp_request->cqp_wqe;
1324
1325 if (!virt_wqs) {
1326 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1327 NES_CQP_QP_IWARP_STATE_IDLE;
1328 } else {
1329 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1330 NES_CQP_QP_IWARP_STATE_IDLE;
1331 }
1332 opcode |= NES_CQP_QP_CQS_VALID;
1333 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1334 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1335 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1336
1337 u64temp = (u64)nesqp->nesqp_context_pbase;
1338 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1339
1340 atomic_set(&cqp_request->refcount, 2);
1341 nes_post_cqp_request(nesdev, cqp_request);
1342
1343 /* Wait for CQP */
1344 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1345 nesqp->hwqp.qp_id);
1346 ret = wait_event_timeout(cqp_request->waitq,
1347 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1348 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1349 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1350 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1351 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1352 cqp_request->major_code, cqp_request->minor_code);
1353 if ((!ret) || (cqp_request->major_code)) {
1354 nes_put_cqp_request(nesdev, cqp_request);
1355 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1356 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1357 kfree(nesqp->allocated_buffer);
1358 if (!ret) {
1359 return ERR_PTR(-ETIME);
1360 } else {
1361 return ERR_PTR(-EIO);
1362 }
1363 }
1364
1365 nes_put_cqp_request(nesdev, cqp_request);
1366
1367 if (ibpd->uobject) {
1368 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1369 uresp.mmap_rq_db_index = 0;
1370 uresp.actual_sq_size = sq_size;
1371 uresp.actual_rq_size = rq_size;
1372 uresp.qp_id = nesqp->hwqp.qp_id;
1373 uresp.nes_drv_opt = nes_drv_opt;
1374 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1375 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1376 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1377 kfree(nesqp->allocated_buffer);
1378 return ERR_PTR(-EFAULT);
1379 }
1380 }
1381
1382 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1383 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1384 spin_lock_init(&nesqp->lock);
1385 nes_add_ref(&nesqp->ibqp);
1386 break;
1387 default:
1388 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1389 return ERR_PTR(-EINVAL);
1390 }
1391
1392 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1393 init_timer(&nesqp->terminate_timer);
1394 nesqp->terminate_timer.function = nes_terminate_timeout;
1395 nesqp->terminate_timer.data = (unsigned long)nesqp;
1396
1397 /* update the QP table */
1398 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1399 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1400 netdev_refcnt_read(nesvnic->netdev));
1401
1402 return &nesqp->ibqp;
1403 }
1404
1405 /**
1406 * nes_clean_cq
1407 */
nes_clean_cq(struct nes_qp * nesqp,struct nes_cq * nescq)1408 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1409 {
1410 u32 cq_head;
1411 u32 lo;
1412 u32 hi;
1413 u64 u64temp;
1414 unsigned long flags = 0;
1415
1416 spin_lock_irqsave(&nescq->lock, flags);
1417
1418 cq_head = nescq->hw_cq.cq_head;
1419 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1420 rmb();
1421 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1422 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1423 u64temp = (((u64)hi) << 32) | ((u64)lo);
1424 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1425 if (u64temp == (u64)(unsigned long)nesqp) {
1426 /* Zero the context value so cqe will be ignored */
1427 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1428 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1429 }
1430
1431 if (++cq_head >= nescq->hw_cq.cq_size)
1432 cq_head = 0;
1433 }
1434
1435 spin_unlock_irqrestore(&nescq->lock, flags);
1436 }
1437
1438
1439 /**
1440 * nes_destroy_qp
1441 */
nes_destroy_qp(struct ib_qp * ibqp)1442 static int nes_destroy_qp(struct ib_qp *ibqp)
1443 {
1444 struct nes_qp *nesqp = to_nesqp(ibqp);
1445 struct nes_ucontext *nes_ucontext;
1446 struct ib_qp_attr attr;
1447 struct iw_cm_id *cm_id;
1448 struct iw_cm_event cm_event;
1449 int ret = 0;
1450
1451 atomic_inc(&sw_qps_destroyed);
1452 nesqp->destroyed = 1;
1453
1454 /* Blow away the connection if it exists. */
1455 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1456 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1457 attr.qp_state = IB_QPS_ERR;
1458 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1459 }
1460
1461 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1462 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1463 cm_id = nesqp->cm_id;
1464 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1465 cm_event.status = -ETIMEDOUT;
1466 cm_event.local_addr = cm_id->local_addr;
1467 cm_event.remote_addr = cm_id->remote_addr;
1468 cm_event.private_data = NULL;
1469 cm_event.private_data_len = 0;
1470
1471 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1472 "QP%u. cm_id = %p, refcount = %u. \n",
1473 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1474
1475 cm_id->rem_ref(cm_id);
1476 ret = cm_id->event_handler(cm_id, &cm_event);
1477 if (ret)
1478 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1479 }
1480
1481 if (nesqp->user_mode) {
1482 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1483 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1484 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1485 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1486 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1487 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1488 }
1489 }
1490 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1491 nesqp->sq_kmapped = 0;
1492 kunmap(nesqp->page);
1493 }
1494 } else {
1495 /* Clean any pending completions from the cq(s) */
1496 if (nesqp->nesscq)
1497 nes_clean_cq(nesqp, nesqp->nesscq);
1498
1499 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1500 nes_clean_cq(nesqp, nesqp->nesrcq);
1501 }
1502 nes_rem_ref(&nesqp->ibqp);
1503 return 0;
1504 }
1505
1506
1507 /**
1508 * nes_create_cq
1509 */
nes_create_cq(struct ib_device * ibdev,const struct ib_cq_init_attr * attr,struct ib_ucontext * context,struct ib_udata * udata)1510 static struct ib_cq *nes_create_cq(struct ib_device *ibdev,
1511 const struct ib_cq_init_attr *attr,
1512 struct ib_ucontext *context,
1513 struct ib_udata *udata)
1514 {
1515 int entries = attr->cqe;
1516 u64 u64temp;
1517 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1518 struct nes_device *nesdev = nesvnic->nesdev;
1519 struct nes_adapter *nesadapter = nesdev->nesadapter;
1520 struct nes_cq *nescq;
1521 struct nes_ucontext *nes_ucontext = NULL;
1522 struct nes_cqp_request *cqp_request;
1523 void *mem = NULL;
1524 struct nes_hw_cqp_wqe *cqp_wqe;
1525 struct nes_pbl *nespbl = NULL;
1526 struct nes_create_cq_req req;
1527 struct nes_create_cq_resp resp;
1528 u32 cq_num = 0;
1529 u32 opcode = 0;
1530 u32 pbl_entries = 1;
1531 int err;
1532 unsigned long flags;
1533 int ret;
1534
1535 if (attr->flags)
1536 return ERR_PTR(-EINVAL);
1537
1538 if (entries > nesadapter->max_cqe)
1539 return ERR_PTR(-EINVAL);
1540
1541 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1542 nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
1543 if (err) {
1544 return ERR_PTR(err);
1545 }
1546
1547 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1548 if (!nescq) {
1549 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1550 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1551 return ERR_PTR(-ENOMEM);
1552 }
1553
1554 nescq->hw_cq.cq_size = max(entries + 1, 5);
1555 nescq->hw_cq.cq_number = cq_num;
1556 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1557
1558
1559 if (context) {
1560 nes_ucontext = to_nesucontext(context);
1561 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1562 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1563 kfree(nescq);
1564 return ERR_PTR(-EFAULT);
1565 }
1566 nesvnic->mcrq_ucontext = nes_ucontext;
1567 nes_ucontext->mcrqf = req.mcrqf;
1568 if (nes_ucontext->mcrqf) {
1569 if (nes_ucontext->mcrqf & 0x80000000)
1570 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1571 else if (nes_ucontext->mcrqf & 0x40000000)
1572 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1573 else
1574 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1575 nescq->mcrqf = nes_ucontext->mcrqf;
1576 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1577 }
1578 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1579 (unsigned long)req.user_cq_buffer, entries);
1580 err = 1;
1581 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1582 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1583 list_del(&nespbl->list);
1584 err = 0;
1585 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1586 nespbl);
1587 break;
1588 }
1589 }
1590 if (err) {
1591 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1592 kfree(nescq);
1593 return ERR_PTR(-EFAULT);
1594 }
1595
1596 pbl_entries = nespbl->pbl_size >> 3;
1597 nescq->cq_mem_size = 0;
1598 } else {
1599 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1600 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1601 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1602
1603 /* allocate the physical buffer space */
1604 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1605 &nescq->hw_cq.cq_pbase);
1606 if (!mem) {
1607 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1608 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1609 kfree(nescq);
1610 return ERR_PTR(-ENOMEM);
1611 }
1612
1613 nescq->hw_cq.cq_vbase = mem;
1614 nescq->hw_cq.cq_head = 0;
1615 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1616 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1617 (u32)nescq->hw_cq.cq_pbase);
1618 }
1619
1620 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1621 spin_lock_init(&nescq->lock);
1622
1623 /* send CreateCQ request to CQP */
1624 cqp_request = nes_get_cqp_request(nesdev);
1625 if (cqp_request == NULL) {
1626 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1627 if (!context)
1628 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1629 nescq->hw_cq.cq_pbase);
1630 else {
1631 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1632 nespbl->pbl_vbase, nespbl->pbl_pbase);
1633 kfree(nespbl);
1634 }
1635
1636 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1637 kfree(nescq);
1638 return ERR_PTR(-ENOMEM);
1639 }
1640 cqp_request->waiting = 1;
1641 cqp_wqe = &cqp_request->cqp_wqe;
1642
1643 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1644 NES_CQP_CQ_CHK_OVERFLOW |
1645 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1646
1647 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1648
1649 if (pbl_entries != 1) {
1650 if (pbl_entries > 32) {
1651 /* use 4k pbl */
1652 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1653 if (nesadapter->free_4kpbl == 0) {
1654 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1655 nes_free_cqp_request(nesdev, cqp_request);
1656 if (!context)
1657 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1658 nescq->hw_cq.cq_pbase);
1659 else {
1660 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1661 nespbl->pbl_vbase, nespbl->pbl_pbase);
1662 kfree(nespbl);
1663 }
1664 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1665 kfree(nescq);
1666 return ERR_PTR(-ENOMEM);
1667 } else {
1668 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1669 nescq->virtual_cq = 2;
1670 nesadapter->free_4kpbl--;
1671 }
1672 } else {
1673 /* use 256 byte pbl */
1674 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1675 if (nesadapter->free_256pbl == 0) {
1676 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1677 nes_free_cqp_request(nesdev, cqp_request);
1678 if (!context)
1679 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1680 nescq->hw_cq.cq_pbase);
1681 else {
1682 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1683 nespbl->pbl_vbase, nespbl->pbl_pbase);
1684 kfree(nespbl);
1685 }
1686 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1687 kfree(nescq);
1688 return ERR_PTR(-ENOMEM);
1689 } else {
1690 opcode |= NES_CQP_CQ_VIRT;
1691 nescq->virtual_cq = 1;
1692 nesadapter->free_256pbl--;
1693 }
1694 }
1695 }
1696
1697 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1698
1699 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1700 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1701 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1702 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1703
1704 if (context) {
1705 if (pbl_entries != 1)
1706 u64temp = (u64)nespbl->pbl_pbase;
1707 else
1708 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1709 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1710 nes_ucontext->mmap_db_index[0]);
1711 } else {
1712 u64temp = (u64)nescq->hw_cq.cq_pbase;
1713 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1714 }
1715 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1716 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1717 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1718 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1719 cpu_to_le32((u32)(u64temp >> 1));
1720 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1721 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1722
1723 atomic_set(&cqp_request->refcount, 2);
1724 nes_post_cqp_request(nesdev, cqp_request);
1725
1726 /* Wait for CQP */
1727 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1728 nescq->hw_cq.cq_number);
1729 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1730 NES_EVENT_TIMEOUT * 2);
1731 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1732 nescq->hw_cq.cq_number, ret);
1733 if ((!ret) || (cqp_request->major_code)) {
1734 nes_put_cqp_request(nesdev, cqp_request);
1735 if (!context)
1736 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1737 nescq->hw_cq.cq_pbase);
1738 else {
1739 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1740 nespbl->pbl_vbase, nespbl->pbl_pbase);
1741 kfree(nespbl);
1742 }
1743 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1744 kfree(nescq);
1745 return ERR_PTR(-EIO);
1746 }
1747 nes_put_cqp_request(nesdev, cqp_request);
1748
1749 if (context) {
1750 /* free the nespbl */
1751 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1752 nespbl->pbl_pbase);
1753 kfree(nespbl);
1754 resp.cq_id = nescq->hw_cq.cq_number;
1755 resp.cq_size = nescq->hw_cq.cq_size;
1756 resp.mmap_db_index = 0;
1757 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
1758 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1759 kfree(nescq);
1760 return ERR_PTR(-EFAULT);
1761 }
1762 }
1763
1764 return &nescq->ibcq;
1765 }
1766
1767
1768 /**
1769 * nes_destroy_cq
1770 */
nes_destroy_cq(struct ib_cq * ib_cq)1771 static int nes_destroy_cq(struct ib_cq *ib_cq)
1772 {
1773 struct nes_cq *nescq;
1774 struct nes_device *nesdev;
1775 struct nes_vnic *nesvnic;
1776 struct nes_adapter *nesadapter;
1777 struct nes_hw_cqp_wqe *cqp_wqe;
1778 struct nes_cqp_request *cqp_request;
1779 unsigned long flags;
1780 u32 opcode = 0;
1781 int ret;
1782
1783 if (ib_cq == NULL)
1784 return 0;
1785
1786 nescq = to_nescq(ib_cq);
1787 nesvnic = to_nesvnic(ib_cq->device);
1788 nesdev = nesvnic->nesdev;
1789 nesadapter = nesdev->nesadapter;
1790
1791 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1792
1793 /* Send DestroyCQ request to CQP */
1794 cqp_request = nes_get_cqp_request(nesdev);
1795 if (cqp_request == NULL) {
1796 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1797 return -ENOMEM;
1798 }
1799 cqp_request->waiting = 1;
1800 cqp_wqe = &cqp_request->cqp_wqe;
1801 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1802 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1803 if (nescq->virtual_cq == 1) {
1804 nesadapter->free_256pbl++;
1805 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1806 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1807 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1808 }
1809 } else if (nescq->virtual_cq == 2) {
1810 nesadapter->free_4kpbl++;
1811 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1812 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1813 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1814 }
1815 opcode |= NES_CQP_CQ_4KB_CHUNK;
1816 }
1817
1818 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1819
1820 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1821 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1822 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1823 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1824 if (!nescq->mcrqf)
1825 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1826
1827 atomic_set(&cqp_request->refcount, 2);
1828 nes_post_cqp_request(nesdev, cqp_request);
1829
1830 /* Wait for CQP */
1831 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1832 nescq->hw_cq.cq_number);
1833 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1834 NES_EVENT_TIMEOUT);
1835 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1836 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1837 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1838 cqp_request->minor_code);
1839 if (!ret) {
1840 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1841 nescq->hw_cq.cq_number);
1842 ret = -ETIME;
1843 } else if (cqp_request->major_code) {
1844 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1845 nescq->hw_cq.cq_number);
1846 ret = -EIO;
1847 } else {
1848 ret = 0;
1849 }
1850 nes_put_cqp_request(nesdev, cqp_request);
1851
1852 if (nescq->cq_mem_size)
1853 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1854 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1855 kfree(nescq);
1856
1857 return ret;
1858 }
1859
1860 /**
1861 * root_256
1862 */
root_256(struct nes_device * nesdev,struct nes_root_vpbl * root_vpbl,struct nes_root_vpbl * new_root,u16 pbl_count_4k)1863 static u32 root_256(struct nes_device *nesdev,
1864 struct nes_root_vpbl *root_vpbl,
1865 struct nes_root_vpbl *new_root,
1866 u16 pbl_count_4k)
1867 {
1868 u64 leaf_pbl;
1869 int i, j, k;
1870
1871 if (pbl_count_4k == 1) {
1872 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1873 512, &new_root->pbl_pbase);
1874
1875 if (new_root->pbl_vbase == NULL)
1876 return 0;
1877
1878 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1879 for (i = 0; i < 16; i++) {
1880 new_root->pbl_vbase[i].pa_low =
1881 cpu_to_le32((u32)leaf_pbl);
1882 new_root->pbl_vbase[i].pa_high =
1883 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1884 leaf_pbl += 256;
1885 }
1886 } else {
1887 for (i = 3; i >= 0; i--) {
1888 j = i * 16;
1889 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1890 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1891 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1892 << 32);
1893 for (k = 1; k < 16; k++) {
1894 leaf_pbl += 256;
1895 root_vpbl->pbl_vbase[j + k].pa_low =
1896 cpu_to_le32((u32)leaf_pbl);
1897 root_vpbl->pbl_vbase[j + k].pa_high =
1898 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1899 }
1900 }
1901 }
1902
1903 return 1;
1904 }
1905
1906
1907 /**
1908 * nes_reg_mr
1909 */
nes_reg_mr(struct nes_device * nesdev,struct nes_pd * nespd,u32 stag,u64 region_length,struct nes_root_vpbl * root_vpbl,dma_addr_t single_buffer,u16 pbl_count_4k,u16 residual_page_count_4k,int acc,u64 * iova_start,u16 * actual_pbl_cnt,u8 * used_4k_pbls)1910 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1911 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1912 dma_addr_t single_buffer, u16 pbl_count_4k,
1913 u16 residual_page_count_4k, int acc, u64 *iova_start,
1914 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1915 {
1916 struct nes_hw_cqp_wqe *cqp_wqe;
1917 struct nes_cqp_request *cqp_request;
1918 unsigned long flags;
1919 int ret;
1920 struct nes_adapter *nesadapter = nesdev->nesadapter;
1921 uint pg_cnt = 0;
1922 u16 pbl_count_256 = 0;
1923 u16 pbl_count = 0;
1924 u8 use_256_pbls = 0;
1925 u8 use_4k_pbls = 0;
1926 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1927 struct nes_root_vpbl new_root = { 0, NULL, NULL };
1928 u32 opcode = 0;
1929 u16 major_code;
1930
1931 /* Register the region with the adapter */
1932 cqp_request = nes_get_cqp_request(nesdev);
1933 if (cqp_request == NULL) {
1934 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1935 return -ENOMEM;
1936 }
1937 cqp_request->waiting = 1;
1938 cqp_wqe = &cqp_request->cqp_wqe;
1939
1940 if (pbl_count_4k) {
1941 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1942
1943 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1944 pbl_count_256 = (pg_cnt + 31) / 32;
1945 if (pg_cnt <= 32) {
1946 if (pbl_count_256 <= nesadapter->free_256pbl)
1947 use_256_pbls = 1;
1948 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1949 use_4k_pbls = 1;
1950 } else if (pg_cnt <= 2048) {
1951 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1952 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1953 use_4k_pbls = 1;
1954 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1955 use_256_pbls = 1;
1956 use_two_level = 1;
1957 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1958 use_4k_pbls = 1;
1959 }
1960 } else {
1961 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1962 use_4k_pbls = 1;
1963 }
1964
1965 if (use_256_pbls) {
1966 pbl_count = pbl_count_256;
1967 nesadapter->free_256pbl -= pbl_count + use_two_level;
1968 } else if (use_4k_pbls) {
1969 pbl_count = pbl_count_4k;
1970 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1971 } else {
1972 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1973 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1974 nes_free_cqp_request(nesdev, cqp_request);
1975 return -ENOMEM;
1976 }
1977
1978 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1979 }
1980
1981 if (use_256_pbls && use_two_level) {
1982 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1983 if (new_root.pbl_pbase != 0)
1984 root_vpbl = &new_root;
1985 } else {
1986 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1987 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1988 use_256_pbls = 0;
1989
1990 if (pbl_count_4k == 1)
1991 use_two_level = 0;
1992 pbl_count = pbl_count_4k;
1993
1994 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1995 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1996 use_4k_pbls = 1;
1997 }
1998 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1999
2000 if (use_4k_pbls == 0)
2001 return -ENOMEM;
2002 }
2003 }
2004
2005 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2006 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2007 if (acc & IB_ACCESS_LOCAL_WRITE)
2008 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2009 if (acc & IB_ACCESS_REMOTE_WRITE)
2010 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2011 if (acc & IB_ACCESS_REMOTE_READ)
2012 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2013 if (acc & IB_ACCESS_MW_BIND)
2014 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2015
2016 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2017 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2018 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2019 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2020
2021 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2022 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2023 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2024 cpu_to_le32(nespd->pd_id & 0x00007fff);
2025 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2026
2027 if (pbl_count == 0) {
2028 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2029 } else {
2030 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2031 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2032 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2033
2034 if (use_4k_pbls)
2035 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2036 }
2037 barrier();
2038
2039 atomic_set(&cqp_request->refcount, 2);
2040 nes_post_cqp_request(nesdev, cqp_request);
2041
2042 /* Wait for CQP */
2043 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2044 NES_EVENT_TIMEOUT);
2045 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2046 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2047 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2048 major_code = cqp_request->major_code;
2049 nes_put_cqp_request(nesdev, cqp_request);
2050
2051 if ((!ret || major_code) && pbl_count != 0) {
2052 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2053 if (use_256_pbls)
2054 nesadapter->free_256pbl += pbl_count + use_two_level;
2055 else if (use_4k_pbls)
2056 nesadapter->free_4kpbl += pbl_count + use_two_level;
2057 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2058 }
2059 if (new_root.pbl_pbase)
2060 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2061 new_root.pbl_pbase);
2062
2063 if (!ret)
2064 return -ETIME;
2065 else if (major_code)
2066 return -EIO;
2067
2068 *actual_pbl_cnt = pbl_count + use_two_level;
2069 *used_4k_pbls = use_4k_pbls;
2070 return 0;
2071 }
2072
2073
2074 /**
2075 * nes_reg_phys_mr
2076 */
nes_reg_phys_mr(struct ib_pd * ib_pd,struct ib_phys_buf * buffer_list,int num_phys_buf,int acc,u64 * iova_start)2077 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2078 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2079 u64 * iova_start)
2080 {
2081 u64 region_length;
2082 struct nes_pd *nespd = to_nespd(ib_pd);
2083 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2084 struct nes_device *nesdev = nesvnic->nesdev;
2085 struct nes_adapter *nesadapter = nesdev->nesadapter;
2086 struct nes_mr *nesmr;
2087 struct ib_mr *ibmr;
2088 struct nes_vpbl vpbl;
2089 struct nes_root_vpbl root_vpbl;
2090 u32 stag;
2091 u32 i;
2092 unsigned long mask;
2093 u32 stag_index = 0;
2094 u32 next_stag_index = 0;
2095 u32 driver_key = 0;
2096 u32 root_pbl_index = 0;
2097 u32 cur_pbl_index = 0;
2098 int err = 0;
2099 int ret = 0;
2100 u16 pbl_count = 0;
2101 u8 single_page = 1;
2102 u8 stag_key = 0;
2103
2104 region_length = 0;
2105 vpbl.pbl_vbase = NULL;
2106 root_vpbl.pbl_vbase = NULL;
2107 root_vpbl.pbl_pbase = 0;
2108
2109 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2110 stag_key = (u8)next_stag_index;
2111
2112 driver_key = 0;
2113
2114 next_stag_index >>= 8;
2115 next_stag_index %= nesadapter->max_mr;
2116 if (num_phys_buf > (1024*512)) {
2117 return ERR_PTR(-E2BIG);
2118 }
2119
2120 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2121 return ERR_PTR(-EINVAL);
2122
2123 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2124 &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
2125 if (err) {
2126 return ERR_PTR(err);
2127 }
2128
2129 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2130 if (!nesmr) {
2131 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2132 return ERR_PTR(-ENOMEM);
2133 }
2134
2135 for (i = 0; i < num_phys_buf; i++) {
2136
2137 if ((i & 0x01FF) == 0) {
2138 if (root_pbl_index == 1) {
2139 /* Allocate the root PBL */
2140 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2141 &root_vpbl.pbl_pbase);
2142 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2143 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2144 if (!root_vpbl.pbl_vbase) {
2145 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2146 vpbl.pbl_pbase);
2147 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2148 kfree(nesmr);
2149 return ERR_PTR(-ENOMEM);
2150 }
2151 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2152 if (!root_vpbl.leaf_vpbl) {
2153 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2154 root_vpbl.pbl_pbase);
2155 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2156 vpbl.pbl_pbase);
2157 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2158 kfree(nesmr);
2159 return ERR_PTR(-ENOMEM);
2160 }
2161 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2162 root_vpbl.pbl_vbase[0].pa_high =
2163 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2164 root_vpbl.leaf_vpbl[0] = vpbl;
2165 }
2166 /* Allocate a 4K buffer for the PBL */
2167 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2168 &vpbl.pbl_pbase);
2169 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2170 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2171 if (!vpbl.pbl_vbase) {
2172 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2173 ibmr = ERR_PTR(-ENOMEM);
2174 kfree(nesmr);
2175 goto reg_phys_err;
2176 }
2177 /* Fill in the root table */
2178 if (1 <= root_pbl_index) {
2179 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2180 cpu_to_le32((u32)vpbl.pbl_pbase);
2181 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2182 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2183 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2184 }
2185 root_pbl_index++;
2186 cur_pbl_index = 0;
2187 }
2188
2189 mask = !buffer_list[i].size;
2190 if (i != 0)
2191 mask |= buffer_list[i].addr;
2192 if (i != num_phys_buf - 1)
2193 mask |= buffer_list[i].addr + buffer_list[i].size;
2194
2195 if (mask & ~PAGE_MASK) {
2196 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2197 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2198 ibmr = ERR_PTR(-EINVAL);
2199 kfree(nesmr);
2200 goto reg_phys_err;
2201 }
2202
2203 region_length += buffer_list[i].size;
2204 if ((i != 0) && (single_page)) {
2205 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2206 single_page = 0;
2207 }
2208 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2209 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2210 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2211 }
2212
2213 stag = stag_index << 8;
2214 stag |= driver_key;
2215 stag += (u32)stag_key;
2216
2217 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2218 " length = 0x%016lX, index = 0x%08X\n",
2219 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2220
2221 /* Make the leaf PBL the root if only one PBL */
2222 if (root_pbl_index == 1) {
2223 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2224 }
2225
2226 if (single_page) {
2227 pbl_count = 0;
2228 } else {
2229 pbl_count = root_pbl_index;
2230 }
2231 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2232 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2233 &nesmr->pbls_used, &nesmr->pbl_4k);
2234
2235 if (ret == 0) {
2236 nesmr->ibmr.rkey = stag;
2237 nesmr->ibmr.lkey = stag;
2238 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2239 ibmr = &nesmr->ibmr;
2240 } else {
2241 kfree(nesmr);
2242 ibmr = ERR_PTR(-ENOMEM);
2243 }
2244
2245 reg_phys_err:
2246 /* free the resources */
2247 if (root_pbl_index == 1) {
2248 /* single PBL case */
2249 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2250 } else {
2251 for (i=0; i<root_pbl_index; i++) {
2252 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2253 root_vpbl.leaf_vpbl[i].pbl_pbase);
2254 }
2255 kfree(root_vpbl.leaf_vpbl);
2256 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2257 root_vpbl.pbl_pbase);
2258 }
2259
2260 return ibmr;
2261 }
2262
2263
2264 /**
2265 * nes_get_dma_mr
2266 */
nes_get_dma_mr(struct ib_pd * pd,int acc)2267 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2268 {
2269 struct ib_phys_buf bl;
2270 u64 kva = 0;
2271
2272 nes_debug(NES_DBG_MR, "\n");
2273
2274 bl.size = (u64)0xffffffffffULL;
2275 bl.addr = 0;
2276 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2277 }
2278
2279
2280 /**
2281 * nes_reg_user_mr
2282 */
nes_reg_user_mr(struct ib_pd * pd,u64 start,u64 length,u64 virt,int acc,struct ib_udata * udata)2283 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2284 u64 virt, int acc, struct ib_udata *udata)
2285 {
2286 u64 iova_start;
2287 __le64 *pbl;
2288 u64 region_length;
2289 dma_addr_t last_dma_addr = 0;
2290 dma_addr_t first_dma_addr = 0;
2291 struct nes_pd *nespd = to_nespd(pd);
2292 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2293 struct nes_device *nesdev = nesvnic->nesdev;
2294 struct nes_adapter *nesadapter = nesdev->nesadapter;
2295 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2296 struct scatterlist *sg;
2297 struct nes_ucontext *nes_ucontext;
2298 struct nes_pbl *nespbl;
2299 struct nes_mr *nesmr;
2300 struct ib_umem *region;
2301 struct nes_mem_reg_req req;
2302 struct nes_vpbl vpbl;
2303 struct nes_root_vpbl root_vpbl;
2304 int entry, page_index;
2305 int page_count = 0;
2306 int err, pbl_depth = 0;
2307 int chunk_pages;
2308 int ret;
2309 u32 stag;
2310 u32 stag_index = 0;
2311 u32 next_stag_index;
2312 u32 driver_key;
2313 u32 root_pbl_index = 0;
2314 u32 cur_pbl_index = 0;
2315 u32 skip_pages;
2316 u16 pbl_count;
2317 u8 single_page = 1;
2318 u8 stag_key;
2319 int first_page = 1;
2320
2321 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2322 if (IS_ERR(region)) {
2323 return (struct ib_mr *)region;
2324 }
2325
2326 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2327 " offset = %u, page size = %u.\n",
2328 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2329 ib_umem_offset(region), region->page_size);
2330
2331 skip_pages = ((u32)ib_umem_offset(region)) >> 12;
2332
2333 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2334 ib_umem_release(region);
2335 return ERR_PTR(-EFAULT);
2336 }
2337 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2338
2339 switch (req.reg_type) {
2340 case IWNES_MEMREG_TYPE_MEM:
2341 pbl_depth = 0;
2342 region_length = 0;
2343 vpbl.pbl_vbase = NULL;
2344 root_vpbl.pbl_vbase = NULL;
2345 root_vpbl.pbl_pbase = 0;
2346
2347 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2348 stag_key = (u8)next_stag_index;
2349
2350 driver_key = next_stag_index & 0x70000000;
2351
2352 next_stag_index >>= 8;
2353 next_stag_index %= nesadapter->max_mr;
2354
2355 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2356 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
2357 if (err) {
2358 ib_umem_release(region);
2359 return ERR_PTR(err);
2360 }
2361
2362 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2363 if (!nesmr) {
2364 ib_umem_release(region);
2365 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2366 return ERR_PTR(-ENOMEM);
2367 }
2368 nesmr->region = region;
2369
2370 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2371 if (sg_dma_address(sg) & ~PAGE_MASK) {
2372 ib_umem_release(region);
2373 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2374 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2375 (unsigned int) sg_dma_address(sg));
2376 ibmr = ERR_PTR(-EINVAL);
2377 kfree(nesmr);
2378 goto reg_user_mr_err;
2379 }
2380
2381 if (!sg_dma_len(sg)) {
2382 ib_umem_release(region);
2383 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2384 stag_index);
2385 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2386 ibmr = ERR_PTR(-EINVAL);
2387 kfree(nesmr);
2388 goto reg_user_mr_err;
2389 }
2390
2391 region_length += sg_dma_len(sg);
2392 chunk_pages = sg_dma_len(sg) >> 12;
2393 region_length -= skip_pages << 12;
2394 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2395 skip_pages = 0;
2396 if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
2397 goto enough_pages;
2398 if ((page_count&0x01FF) == 0) {
2399 if (page_count >= 1024 * 512) {
2400 ib_umem_release(region);
2401 nes_free_resource(nesadapter,
2402 nesadapter->allocated_mrs, stag_index);
2403 kfree(nesmr);
2404 ibmr = ERR_PTR(-E2BIG);
2405 goto reg_user_mr_err;
2406 }
2407 if (root_pbl_index == 1) {
2408 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2409 8192, &root_vpbl.pbl_pbase);
2410 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2411 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2412 if (!root_vpbl.pbl_vbase) {
2413 ib_umem_release(region);
2414 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2415 vpbl.pbl_pbase);
2416 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2417 stag_index);
2418 kfree(nesmr);
2419 ibmr = ERR_PTR(-ENOMEM);
2420 goto reg_user_mr_err;
2421 }
2422 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2423 GFP_KERNEL);
2424 if (!root_vpbl.leaf_vpbl) {
2425 ib_umem_release(region);
2426 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2427 root_vpbl.pbl_pbase);
2428 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2429 vpbl.pbl_pbase);
2430 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2431 stag_index);
2432 kfree(nesmr);
2433 ibmr = ERR_PTR(-ENOMEM);
2434 goto reg_user_mr_err;
2435 }
2436 root_vpbl.pbl_vbase[0].pa_low =
2437 cpu_to_le32((u32)vpbl.pbl_pbase);
2438 root_vpbl.pbl_vbase[0].pa_high =
2439 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2440 root_vpbl.leaf_vpbl[0] = vpbl;
2441 }
2442 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2443 &vpbl.pbl_pbase);
2444 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2445 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2446 if (!vpbl.pbl_vbase) {
2447 ib_umem_release(region);
2448 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2449 ibmr = ERR_PTR(-ENOMEM);
2450 kfree(nesmr);
2451 goto reg_user_mr_err;
2452 }
2453 if (1 <= root_pbl_index) {
2454 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2455 cpu_to_le32((u32)vpbl.pbl_pbase);
2456 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2457 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2458 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2459 }
2460 root_pbl_index++;
2461 cur_pbl_index = 0;
2462 }
2463 if (single_page) {
2464 if (page_count != 0) {
2465 if ((last_dma_addr+4096) !=
2466 (sg_dma_address(sg)+
2467 (page_index*4096)))
2468 single_page = 0;
2469 last_dma_addr = sg_dma_address(sg)+
2470 (page_index*4096);
2471 } else {
2472 first_dma_addr = sg_dma_address(sg)+
2473 (page_index*4096);
2474 last_dma_addr = first_dma_addr;
2475 }
2476 }
2477
2478 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2479 cpu_to_le32((u32)(sg_dma_address(sg)+
2480 (page_index*4096)));
2481 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2482 cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2483 (page_index*4096))) >> 32)));
2484 cur_pbl_index++;
2485 page_count++;
2486 }
2487 }
2488
2489 enough_pages:
2490 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2491 " stag_key=0x%08x\n",
2492 stag_index, driver_key, stag_key);
2493 stag = stag_index << 8;
2494 stag |= driver_key;
2495 stag += (u32)stag_key;
2496
2497 iova_start = virt;
2498 /* Make the leaf PBL the root if only one PBL */
2499 if (root_pbl_index == 1) {
2500 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2501 }
2502
2503 if (single_page) {
2504 pbl_count = 0;
2505 } else {
2506 pbl_count = root_pbl_index;
2507 first_dma_addr = 0;
2508 }
2509 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2510 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2511 stag, (unsigned int)iova_start,
2512 (unsigned int)region_length, stag_index,
2513 (unsigned long long)region->length, pbl_count);
2514 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2515 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2516 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2517
2518 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2519
2520 if (ret == 0) {
2521 nesmr->ibmr.rkey = stag;
2522 nesmr->ibmr.lkey = stag;
2523 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2524 ibmr = &nesmr->ibmr;
2525 } else {
2526 ib_umem_release(region);
2527 kfree(nesmr);
2528 ibmr = ERR_PTR(-ENOMEM);
2529 }
2530
2531 reg_user_mr_err:
2532 /* free the resources */
2533 if (root_pbl_index == 1) {
2534 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2535 vpbl.pbl_pbase);
2536 } else {
2537 for (page_index=0; page_index<root_pbl_index; page_index++) {
2538 pci_free_consistent(nesdev->pcidev, 4096,
2539 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2540 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2541 }
2542 kfree(root_vpbl.leaf_vpbl);
2543 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2544 root_vpbl.pbl_pbase);
2545 }
2546
2547 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2548
2549 return ibmr;
2550 case IWNES_MEMREG_TYPE_QP:
2551 case IWNES_MEMREG_TYPE_CQ:
2552 if (!region->length) {
2553 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2554 ib_umem_release(region);
2555 return ERR_PTR(-EINVAL);
2556 }
2557 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2558 if (!nespbl) {
2559 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2560 ib_umem_release(region);
2561 return ERR_PTR(-ENOMEM);
2562 }
2563 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2564 if (!nesmr) {
2565 ib_umem_release(region);
2566 kfree(nespbl);
2567 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2568 return ERR_PTR(-ENOMEM);
2569 }
2570 nesmr->region = region;
2571 nes_ucontext = to_nesucontext(pd->uobject->context);
2572 pbl_depth = region->length >> 12;
2573 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2574 nespbl->pbl_size = pbl_depth*sizeof(u64);
2575 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2576 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2577 } else {
2578 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2579 }
2580
2581 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2582 nespbl->pbl_size, pbl_depth);
2583 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2584 &nespbl->pbl_pbase);
2585 if (!pbl) {
2586 ib_umem_release(region);
2587 kfree(nesmr);
2588 kfree(nespbl);
2589 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2590 return ERR_PTR(-ENOMEM);
2591 }
2592
2593 nespbl->pbl_vbase = (u64 *)pbl;
2594 nespbl->user_base = start;
2595 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2596 " pbl_vbase=%p user_base=0x%lx\n",
2597 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2598 (void *) nespbl->pbl_vbase, nespbl->user_base);
2599
2600 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2601 chunk_pages = sg_dma_len(sg) >> 12;
2602 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2603 if (first_page) {
2604 nespbl->page = sg_page(sg);
2605 first_page = 0;
2606 }
2607
2608 for (page_index = 0; page_index < chunk_pages; page_index++) {
2609 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2610 (sg_dma_address(sg)+
2611 (page_index*4096)));
2612 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2613 (sg_dma_address(sg)+
2614 (page_index*4096)))>>32);
2615 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2616 (unsigned long long)*pbl,
2617 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2618 pbl++;
2619 }
2620 }
2621
2622 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2623 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2624 } else {
2625 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2626 }
2627 nesmr->ibmr.rkey = -1;
2628 nesmr->ibmr.lkey = -1;
2629 nesmr->mode = req.reg_type;
2630 return &nesmr->ibmr;
2631 }
2632
2633 ib_umem_release(region);
2634 return ERR_PTR(-ENOSYS);
2635 }
2636
2637
2638 /**
2639 * nes_dereg_mr
2640 */
nes_dereg_mr(struct ib_mr * ib_mr)2641 static int nes_dereg_mr(struct ib_mr *ib_mr)
2642 {
2643 struct nes_mr *nesmr = to_nesmr(ib_mr);
2644 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2645 struct nes_device *nesdev = nesvnic->nesdev;
2646 struct nes_adapter *nesadapter = nesdev->nesadapter;
2647 struct nes_hw_cqp_wqe *cqp_wqe;
2648 struct nes_cqp_request *cqp_request;
2649 unsigned long flags;
2650 int ret;
2651 u16 major_code;
2652 u16 minor_code;
2653
2654
2655 if (nesmr->pages)
2656 pci_free_consistent(nesdev->pcidev,
2657 nesmr->max_pages * sizeof(u64),
2658 nesmr->pages,
2659 nesmr->paddr);
2660
2661 if (nesmr->region) {
2662 ib_umem_release(nesmr->region);
2663 }
2664 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2665 kfree(nesmr);
2666 return 0;
2667 }
2668
2669 /* Deallocate the region with the adapter */
2670
2671 cqp_request = nes_get_cqp_request(nesdev);
2672 if (cqp_request == NULL) {
2673 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2674 return -ENOMEM;
2675 }
2676 cqp_request->waiting = 1;
2677 cqp_wqe = &cqp_request->cqp_wqe;
2678
2679 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2680 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2681 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2682 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2683 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2684
2685 atomic_set(&cqp_request->refcount, 2);
2686 nes_post_cqp_request(nesdev, cqp_request);
2687
2688 /* Wait for CQP */
2689 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2690 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2691 NES_EVENT_TIMEOUT);
2692 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2693 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2694 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2695
2696 major_code = cqp_request->major_code;
2697 minor_code = cqp_request->minor_code;
2698
2699 nes_put_cqp_request(nesdev, cqp_request);
2700
2701 if (!ret) {
2702 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2703 " ib_mr=%p, rkey = 0x%08X\n",
2704 ib_mr, ib_mr->rkey);
2705 return -ETIME;
2706 } else if (major_code) {
2707 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2708 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2709 major_code, minor_code, ib_mr, ib_mr->rkey);
2710 return -EIO;
2711 }
2712
2713 if (nesmr->pbls_used != 0) {
2714 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2715 if (nesmr->pbl_4k) {
2716 nesadapter->free_4kpbl += nesmr->pbls_used;
2717 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2718 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2719 "exceeded the max(%u)\n",
2720 nesadapter->free_4kpbl,
2721 nesadapter->max_4kpbl);
2722 } else {
2723 nesadapter->free_256pbl += nesmr->pbls_used;
2724 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2725 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2726 "exceeded the max(%u)\n",
2727 nesadapter->free_256pbl,
2728 nesadapter->max_256pbl);
2729 }
2730 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2731 }
2732 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2733 (ib_mr->rkey & 0x0fffff00) >> 8);
2734
2735 kfree(nesmr);
2736
2737 return 0;
2738 }
2739
2740
2741 /**
2742 * show_rev
2743 */
show_rev(struct device * dev,struct device_attribute * attr,char * buf)2744 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2745 char *buf)
2746 {
2747 struct nes_ib_device *nesibdev =
2748 container_of(dev, struct nes_ib_device, ibdev.dev);
2749 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2750
2751 nes_debug(NES_DBG_INIT, "\n");
2752 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2753 }
2754
2755
2756 /**
2757 * show_fw_ver
2758 */
show_fw_ver(struct device * dev,struct device_attribute * attr,char * buf)2759 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2760 char *buf)
2761 {
2762 struct nes_ib_device *nesibdev =
2763 container_of(dev, struct nes_ib_device, ibdev.dev);
2764 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2765
2766 nes_debug(NES_DBG_INIT, "\n");
2767 return sprintf(buf, "%u.%u\n",
2768 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2769 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2770 }
2771
2772
2773 /**
2774 * show_hca
2775 */
show_hca(struct device * dev,struct device_attribute * attr,char * buf)2776 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2777 char *buf)
2778 {
2779 nes_debug(NES_DBG_INIT, "\n");
2780 return sprintf(buf, "NES020\n");
2781 }
2782
2783
2784 /**
2785 * show_board
2786 */
show_board(struct device * dev,struct device_attribute * attr,char * buf)2787 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2788 char *buf)
2789 {
2790 nes_debug(NES_DBG_INIT, "\n");
2791 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2792 }
2793
2794
2795 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2796 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2797 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2798 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2799
2800 static struct device_attribute *nes_dev_attributes[] = {
2801 &dev_attr_hw_rev,
2802 &dev_attr_fw_ver,
2803 &dev_attr_hca_type,
2804 &dev_attr_board_id
2805 };
2806
2807
2808 /**
2809 * nes_query_qp
2810 */
nes_query_qp(struct ib_qp * ibqp,struct ib_qp_attr * attr,int attr_mask,struct ib_qp_init_attr * init_attr)2811 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2812 int attr_mask, struct ib_qp_init_attr *init_attr)
2813 {
2814 struct nes_qp *nesqp = to_nesqp(ibqp);
2815
2816 nes_debug(NES_DBG_QP, "\n");
2817
2818 attr->qp_access_flags = 0;
2819 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2820 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2821 attr->cap.max_recv_sge = 1;
2822 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2823 attr->cap.max_inline_data = 0;
2824 else
2825 attr->cap.max_inline_data = 64;
2826
2827 init_attr->event_handler = nesqp->ibqp.event_handler;
2828 init_attr->qp_context = nesqp->ibqp.qp_context;
2829 init_attr->send_cq = nesqp->ibqp.send_cq;
2830 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2831 init_attr->srq = nesqp->ibqp.srq;
2832 init_attr->cap = attr->cap;
2833
2834 return 0;
2835 }
2836
2837
2838 /**
2839 * nes_hw_modify_qp
2840 */
nes_hw_modify_qp(struct nes_device * nesdev,struct nes_qp * nesqp,u32 next_iwarp_state,u32 termlen,u32 wait_completion)2841 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2842 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2843 {
2844 struct nes_hw_cqp_wqe *cqp_wqe;
2845 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2846 /* struct iw_cm_event cm_event; */
2847 struct nes_cqp_request *cqp_request;
2848 int ret;
2849 u16 major_code;
2850
2851 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2852 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2853
2854 cqp_request = nes_get_cqp_request(nesdev);
2855 if (cqp_request == NULL) {
2856 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2857 return -ENOMEM;
2858 }
2859 if (wait_completion) {
2860 cqp_request->waiting = 1;
2861 } else {
2862 cqp_request->waiting = 0;
2863 }
2864 cqp_wqe = &cqp_request->cqp_wqe;
2865
2866 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2867 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2868 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2869 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2870 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2871 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2872 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2873
2874 /* If sending a terminate message, fill in the length (in words) */
2875 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2876 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2877 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2878 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2879 }
2880
2881 atomic_set(&cqp_request->refcount, 2);
2882 nes_post_cqp_request(nesdev, cqp_request);
2883
2884 /* Wait for CQP */
2885 if (wait_completion) {
2886 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2887 nesqp->hwqp.qp_id); */
2888 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2889 NES_EVENT_TIMEOUT);
2890 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2891 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2892 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2893 major_code = cqp_request->major_code;
2894 if (major_code) {
2895 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2896 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2897 nesqp->hwqp.qp_id, cqp_request->major_code,
2898 cqp_request->minor_code, next_iwarp_state);
2899 }
2900
2901 nes_put_cqp_request(nesdev, cqp_request);
2902
2903 if (!ret)
2904 return -ETIME;
2905 else if (major_code)
2906 return -EIO;
2907 else
2908 return 0;
2909 } else {
2910 return 0;
2911 }
2912 }
2913
2914
2915 /**
2916 * nes_modify_qp
2917 */
nes_modify_qp(struct ib_qp * ibqp,struct ib_qp_attr * attr,int attr_mask,struct ib_udata * udata)2918 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2919 int attr_mask, struct ib_udata *udata)
2920 {
2921 struct nes_qp *nesqp = to_nesqp(ibqp);
2922 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2923 struct nes_device *nesdev = nesvnic->nesdev;
2924 /* u32 cqp_head; */
2925 /* u32 counter; */
2926 u32 next_iwarp_state = 0;
2927 int err;
2928 unsigned long qplockflags;
2929 int ret;
2930 u16 original_last_aeq;
2931 u8 issue_modify_qp = 0;
2932 u8 dont_wait = 0;
2933
2934 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2935 " iwarp_state=0x%X, refcount=%d\n",
2936 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2937 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2938
2939 spin_lock_irqsave(&nesqp->lock, qplockflags);
2940
2941 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2942 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2943 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2944 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2945
2946 if (attr_mask & IB_QP_STATE) {
2947 switch (attr->qp_state) {
2948 case IB_QPS_INIT:
2949 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2950 nesqp->hwqp.qp_id);
2951 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2952 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2953 return -EINVAL;
2954 }
2955 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2956 issue_modify_qp = 1;
2957 break;
2958 case IB_QPS_RTR:
2959 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2960 nesqp->hwqp.qp_id);
2961 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2962 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2963 return -EINVAL;
2964 }
2965 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2966 issue_modify_qp = 1;
2967 break;
2968 case IB_QPS_RTS:
2969 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2970 nesqp->hwqp.qp_id);
2971 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2972 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2973 return -EINVAL;
2974 }
2975 if (nesqp->cm_id == NULL) {
2976 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2977 nesqp->hwqp.qp_id );
2978 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2979 return -EINVAL;
2980 }
2981 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2982 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2983 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2984 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2985 issue_modify_qp = 1;
2986 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2987 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2988 nesqp->hte_added = 1;
2989 break;
2990 case IB_QPS_SQD:
2991 issue_modify_qp = 1;
2992 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2993 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2994 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2995 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2996 return 0;
2997 } else {
2998 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2999 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3000 " ignored due to current iWARP state\n",
3001 nesqp->hwqp.qp_id);
3002 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3003 return -EINVAL;
3004 }
3005 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3006 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3007 " already done based on hw state.\n",
3008 nesqp->hwqp.qp_id);
3009 issue_modify_qp = 0;
3010 }
3011 switch (nesqp->hw_iwarp_state) {
3012 case NES_AEQE_IWARP_STATE_CLOSING:
3013 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3014 break;
3015 case NES_AEQE_IWARP_STATE_TERMINATE:
3016 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3017 break;
3018 case NES_AEQE_IWARP_STATE_ERROR:
3019 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3020 break;
3021 default:
3022 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3023 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3024 break;
3025 }
3026 }
3027 break;
3028 case IB_QPS_SQE:
3029 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3030 nesqp->hwqp.qp_id);
3031 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3032 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3033 return -EINVAL;
3034 }
3035 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3036 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3037 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3038 issue_modify_qp = 1;
3039 break;
3040 case IB_QPS_ERR:
3041 case IB_QPS_RESET:
3042 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3043 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3044 return -EINVAL;
3045 }
3046 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3047 nesqp->hwqp.qp_id);
3048 if (nesqp->term_flags)
3049 del_timer(&nesqp->terminate_timer);
3050
3051 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3052 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3053 if (nesqp->hte_added) {
3054 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3055 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3056 nesqp->hte_added = 0;
3057 }
3058 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3059 (nesdev->iw_status) &&
3060 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3061 next_iwarp_state |= NES_CQP_QP_RESET;
3062 } else {
3063 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3064 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3065 dont_wait = 1;
3066 }
3067 issue_modify_qp = 1;
3068 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3069 break;
3070 default:
3071 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3072 return -EINVAL;
3073 break;
3074 }
3075
3076 nesqp->ibqp_state = attr->qp_state;
3077 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3078 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3079 nesqp->iwarp_state);
3080 }
3081
3082 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3083 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3084 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3085 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3086 issue_modify_qp = 1;
3087 }
3088 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3089 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3090 issue_modify_qp = 1;
3091 }
3092 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3093 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3094 issue_modify_qp = 1;
3095 }
3096 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3097 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3098 issue_modify_qp = 1;
3099 }
3100
3101 if (nesqp->user_mode) {
3102 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3103 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3104 issue_modify_qp = 1;
3105 }
3106 }
3107
3108 original_last_aeq = nesqp->last_aeq;
3109 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3110
3111 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3112
3113 ret = 0;
3114
3115
3116 if (issue_modify_qp) {
3117 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3118 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3119 if (ret)
3120 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3121 " failed for QP%u.\n",
3122 next_iwarp_state, nesqp->hwqp.qp_id);
3123
3124 }
3125
3126 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3127 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3128 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3129 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3130 original_last_aeq, nesqp->last_aeq);
3131 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
3132 if (dont_wait) {
3133 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3134 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3135 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3136 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3137 original_last_aeq, nesqp->last_aeq);
3138 /* this one is for the cm_disconnect thread */
3139 spin_lock_irqsave(&nesqp->lock, qplockflags);
3140 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3141 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3142 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3143 nes_cm_disconn(nesqp);
3144 } else {
3145 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3146 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3147 }
3148 } else {
3149 spin_lock_irqsave(&nesqp->lock, qplockflags);
3150 if (nesqp->cm_id) {
3151 /* These two are for the timer thread */
3152 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3153 nesqp->cm_id->add_ref(nesqp->cm_id);
3154 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3155 " need ae to finish up, original_last_aeq = 0x%04X."
3156 " last_aeq = 0x%04X, scheduling timer.\n",
3157 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3158 original_last_aeq, nesqp->last_aeq);
3159 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3160 }
3161 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3162 } else {
3163 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3164 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3165 " need ae to finish up, original_last_aeq = 0x%04X."
3166 " last_aeq = 0x%04X.\n",
3167 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3168 original_last_aeq, nesqp->last_aeq);
3169 }
3170 }
3171 } else {
3172 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3173 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3174 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3175 original_last_aeq, nesqp->last_aeq);
3176 }
3177 } else {
3178 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3179 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3180 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3181 original_last_aeq, nesqp->last_aeq);
3182 }
3183
3184 err = 0;
3185
3186 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3187 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3188
3189 return err;
3190 }
3191
3192
3193 /**
3194 * nes_muticast_attach
3195 */
nes_multicast_attach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)3196 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3197 {
3198 nes_debug(NES_DBG_INIT, "\n");
3199 return -ENOSYS;
3200 }
3201
3202
3203 /**
3204 * nes_multicast_detach
3205 */
nes_multicast_detach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)3206 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3207 {
3208 nes_debug(NES_DBG_INIT, "\n");
3209 return -ENOSYS;
3210 }
3211
3212
3213 /**
3214 * nes_process_mad
3215 */
nes_process_mad(struct ib_device * ibdev,int mad_flags,u8 port_num,const struct ib_wc * in_wc,const struct ib_grh * in_grh,const struct ib_mad_hdr * in,size_t in_mad_size,struct ib_mad_hdr * out,size_t * out_mad_size,u16 * out_mad_pkey_index)3216 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3217 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
3218 const struct ib_mad_hdr *in, size_t in_mad_size,
3219 struct ib_mad_hdr *out, size_t *out_mad_size,
3220 u16 *out_mad_pkey_index)
3221 {
3222 nes_debug(NES_DBG_INIT, "\n");
3223 return -ENOSYS;
3224 }
3225
3226 static inline void
fill_wqe_sg_send(struct nes_hw_qp_wqe * wqe,struct ib_send_wr * ib_wr,u32 uselkey)3227 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3228 {
3229 int sge_index;
3230 int total_payload_length = 0;
3231 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3232 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3233 ib_wr->sg_list[sge_index].addr);
3234 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3235 ib_wr->sg_list[sge_index].length);
3236 if (uselkey)
3237 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3238 (ib_wr->sg_list[sge_index].lkey));
3239 else
3240 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3241
3242 total_payload_length += ib_wr->sg_list[sge_index].length;
3243 }
3244 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3245 total_payload_length);
3246 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3247 total_payload_length);
3248 }
3249
3250 /**
3251 * nes_post_send
3252 */
nes_post_send(struct ib_qp * ibqp,struct ib_send_wr * ib_wr,struct ib_send_wr ** bad_wr)3253 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3254 struct ib_send_wr **bad_wr)
3255 {
3256 u64 u64temp;
3257 unsigned long flags = 0;
3258 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3259 struct nes_device *nesdev = nesvnic->nesdev;
3260 struct nes_qp *nesqp = to_nesqp(ibqp);
3261 struct nes_hw_qp_wqe *wqe;
3262 int err = 0;
3263 u32 qsize = nesqp->hwqp.sq_size;
3264 u32 head;
3265 u32 wqe_misc = 0;
3266 u32 wqe_count = 0;
3267 u32 counter;
3268
3269 if (nesqp->ibqp_state > IB_QPS_RTS) {
3270 err = -EINVAL;
3271 goto out;
3272 }
3273
3274 spin_lock_irqsave(&nesqp->lock, flags);
3275
3276 head = nesqp->hwqp.sq_head;
3277
3278 while (ib_wr) {
3279 /* Check for QP error */
3280 if (nesqp->term_flags) {
3281 err = -EINVAL;
3282 break;
3283 }
3284
3285 /* Check for SQ overflow */
3286 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3287 err = -ENOMEM;
3288 break;
3289 }
3290
3291 wqe = &nesqp->hwqp.sq_vbase[head];
3292 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3293 nesqp->hwqp.qp_id, wqe, head); */
3294 nes_fill_init_qp_wqe(wqe, nesqp, head);
3295 u64temp = (u64)(ib_wr->wr_id);
3296 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3297 u64temp);
3298 switch (ib_wr->opcode) {
3299 case IB_WR_SEND:
3300 case IB_WR_SEND_WITH_INV:
3301 if (IB_WR_SEND == ib_wr->opcode) {
3302 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3303 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3304 else
3305 wqe_misc = NES_IWARP_SQ_OP_SEND;
3306 } else {
3307 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3308 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3309 else
3310 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3311
3312 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3313 ib_wr->ex.invalidate_rkey);
3314 }
3315
3316 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3317 err = -EINVAL;
3318 break;
3319 }
3320
3321 if (ib_wr->send_flags & IB_SEND_FENCE)
3322 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3323
3324 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3325 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3326 (ib_wr->sg_list[0].length <= 64)) {
3327 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3328 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3329 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3330 ib_wr->sg_list[0].length);
3331 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3332 } else {
3333 fill_wqe_sg_send(wqe, ib_wr, 1);
3334 }
3335
3336 break;
3337 case IB_WR_RDMA_WRITE:
3338 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3339 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3340 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3341 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3342 err = -EINVAL;
3343 break;
3344 }
3345
3346 if (ib_wr->send_flags & IB_SEND_FENCE)
3347 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3348
3349 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3350 rdma_wr(ib_wr)->rkey);
3351 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3352 rdma_wr(ib_wr)->remote_addr);
3353
3354 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3355 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3356 (ib_wr->sg_list[0].length <= 64)) {
3357 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3358 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3359 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3360 ib_wr->sg_list[0].length);
3361 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3362 } else {
3363 fill_wqe_sg_send(wqe, ib_wr, 1);
3364 }
3365
3366 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3367 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3368 break;
3369 case IB_WR_RDMA_READ:
3370 case IB_WR_RDMA_READ_WITH_INV:
3371 /* iWARP only supports 1 sge for RDMA reads */
3372 if (ib_wr->num_sge > 1) {
3373 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3374 ib_wr->num_sge);
3375 err = -EINVAL;
3376 break;
3377 }
3378 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3379 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3380 } else {
3381 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3382 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3383 ib_wr->ex.invalidate_rkey);
3384 }
3385
3386 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3387 rdma_wr(ib_wr)->remote_addr);
3388 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3389 rdma_wr(ib_wr)->rkey);
3390 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3391 ib_wr->sg_list->length);
3392 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3393 ib_wr->sg_list->addr);
3394 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3395 ib_wr->sg_list->lkey);
3396 break;
3397 case IB_WR_LOCAL_INV:
3398 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3399 set_wqe_32bit_value(wqe->wqe_words,
3400 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3401 ib_wr->ex.invalidate_rkey);
3402 break;
3403 case IB_WR_REG_MR:
3404 {
3405 struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
3406 int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
3407 int flags = reg_wr(ib_wr)->access;
3408
3409 if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3410 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3411 err = -EINVAL;
3412 break;
3413 }
3414 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3415 set_wqe_64bit_value(wqe->wqe_words,
3416 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3417 mr->ibmr.iova);
3418 set_wqe_32bit_value(wqe->wqe_words,
3419 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3420 mr->ibmr.length);
3421 set_wqe_32bit_value(wqe->wqe_words,
3422 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3423 set_wqe_32bit_value(wqe->wqe_words,
3424 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3425 reg_wr(ib_wr)->key);
3426
3427 if (page_shift == 12) {
3428 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3429 } else if (page_shift == 21) {
3430 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3431 } else {
3432 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3433 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3434 err = -EINVAL;
3435 break;
3436 }
3437
3438 /* Set access_flags */
3439 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3440 if (flags & IB_ACCESS_LOCAL_WRITE)
3441 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3442
3443 if (flags & IB_ACCESS_REMOTE_WRITE)
3444 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3445
3446 if (flags & IB_ACCESS_REMOTE_READ)
3447 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3448
3449 if (flags & IB_ACCESS_MW_BIND)
3450 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3451
3452 /* Fill in PBL info: */
3453 set_wqe_64bit_value(wqe->wqe_words,
3454 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3455 mr->paddr);
3456
3457 set_wqe_32bit_value(wqe->wqe_words,
3458 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3459 mr->npages * 8);
3460
3461 nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
3462 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3463 "page_list_len: %u, wqe_misc: %x\n",
3464 (unsigned long long) mr->ibmr.iova,
3465 mr->ibmr.length,
3466 reg_wr(ib_wr)->key,
3467 (unsigned long long) mr->paddr,
3468 mr->npages,
3469 wqe_misc);
3470 break;
3471 }
3472 default:
3473 /* error */
3474 err = -EINVAL;
3475 break;
3476 }
3477
3478 if (err)
3479 break;
3480
3481 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3482 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3483
3484 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3485
3486 ib_wr = ib_wr->next;
3487 head++;
3488 wqe_count++;
3489 if (head >= qsize)
3490 head = 0;
3491
3492 }
3493
3494 nesqp->hwqp.sq_head = head;
3495 barrier();
3496 while (wqe_count) {
3497 counter = min(wqe_count, ((u32)255));
3498 wqe_count -= counter;
3499 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3500 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3501 }
3502
3503 spin_unlock_irqrestore(&nesqp->lock, flags);
3504
3505 out:
3506 if (err)
3507 *bad_wr = ib_wr;
3508 return err;
3509 }
3510
3511
3512 /**
3513 * nes_post_recv
3514 */
nes_post_recv(struct ib_qp * ibqp,struct ib_recv_wr * ib_wr,struct ib_recv_wr ** bad_wr)3515 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3516 struct ib_recv_wr **bad_wr)
3517 {
3518 u64 u64temp;
3519 unsigned long flags = 0;
3520 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3521 struct nes_device *nesdev = nesvnic->nesdev;
3522 struct nes_qp *nesqp = to_nesqp(ibqp);
3523 struct nes_hw_qp_wqe *wqe;
3524 int err = 0;
3525 int sge_index;
3526 u32 qsize = nesqp->hwqp.rq_size;
3527 u32 head;
3528 u32 wqe_count = 0;
3529 u32 counter;
3530 u32 total_payload_length;
3531
3532 if (nesqp->ibqp_state > IB_QPS_RTS) {
3533 err = -EINVAL;
3534 goto out;
3535 }
3536
3537 spin_lock_irqsave(&nesqp->lock, flags);
3538
3539 head = nesqp->hwqp.rq_head;
3540
3541 while (ib_wr) {
3542 /* Check for QP error */
3543 if (nesqp->term_flags) {
3544 err = -EINVAL;
3545 break;
3546 }
3547
3548 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3549 err = -EINVAL;
3550 break;
3551 }
3552 /* Check for RQ overflow */
3553 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3554 err = -ENOMEM;
3555 break;
3556 }
3557
3558 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3559 wqe = &nesqp->hwqp.rq_vbase[head];
3560
3561 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3562 nesqp->hwqp.qp_id, wqe, head); */
3563 nes_fill_init_qp_wqe(wqe, nesqp, head);
3564 u64temp = (u64)(ib_wr->wr_id);
3565 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3566 u64temp);
3567 total_payload_length = 0;
3568 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3569 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3570 ib_wr->sg_list[sge_index].addr);
3571 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3572 ib_wr->sg_list[sge_index].length);
3573 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3574 ib_wr->sg_list[sge_index].lkey);
3575
3576 total_payload_length += ib_wr->sg_list[sge_index].length;
3577 }
3578 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3579 total_payload_length);
3580
3581 ib_wr = ib_wr->next;
3582 head++;
3583 wqe_count++;
3584 if (head >= qsize)
3585 head = 0;
3586 }
3587
3588 nesqp->hwqp.rq_head = head;
3589 barrier();
3590 while (wqe_count) {
3591 counter = min(wqe_count, ((u32)255));
3592 wqe_count -= counter;
3593 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3594 }
3595
3596 spin_unlock_irqrestore(&nesqp->lock, flags);
3597
3598 out:
3599 if (err)
3600 *bad_wr = ib_wr;
3601 return err;
3602 }
3603
3604
3605 /**
3606 * nes_poll_cq
3607 */
nes_poll_cq(struct ib_cq * ibcq,int num_entries,struct ib_wc * entry)3608 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3609 {
3610 u64 u64temp;
3611 u64 wrid;
3612 unsigned long flags = 0;
3613 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3614 struct nes_device *nesdev = nesvnic->nesdev;
3615 struct nes_cq *nescq = to_nescq(ibcq);
3616 struct nes_qp *nesqp;
3617 struct nes_hw_cqe cqe;
3618 u32 head;
3619 u32 wq_tail = 0;
3620 u32 cq_size;
3621 u32 cqe_count = 0;
3622 u32 wqe_index;
3623 u32 u32temp;
3624 u32 move_cq_head = 1;
3625 u32 err_code;
3626
3627 nes_debug(NES_DBG_CQ, "\n");
3628
3629 spin_lock_irqsave(&nescq->lock, flags);
3630
3631 head = nescq->hw_cq.cq_head;
3632 cq_size = nescq->hw_cq.cq_size;
3633
3634 while (cqe_count < num_entries) {
3635 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3636 NES_CQE_VALID) == 0)
3637 break;
3638
3639 /*
3640 * Make sure we read CQ entry contents *after*
3641 * we've checked the valid bit.
3642 */
3643 rmb();
3644
3645 cqe = nescq->hw_cq.cq_vbase[head];
3646 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3647 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3648 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3649 /* parse CQE, get completion context from WQE (either rq or sq) */
3650 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3651 ((u64)u32temp);
3652
3653 if (u64temp) {
3654 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3655 memset(entry, 0, sizeof *entry);
3656 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3657 entry->status = IB_WC_SUCCESS;
3658 } else {
3659 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3660 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3661 entry->status = err_code & 0x0000ffff;
3662
3663 /* The rest of the cqe's will be marked as flushed */
3664 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3665 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3666 NES_IWARP_CQE_MINOR_FLUSH);
3667 } else
3668 entry->status = IB_WC_WR_FLUSH_ERR;
3669 }
3670
3671 entry->qp = &nesqp->ibqp;
3672 entry->src_qp = nesqp->hwqp.qp_id;
3673
3674 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3675 if (nesqp->skip_lsmm) {
3676 nesqp->skip_lsmm = 0;
3677 nesqp->hwqp.sq_tail++;
3678 }
3679
3680 /* Working on a SQ Completion*/
3681 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3682 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3683 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3684 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3685 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3686 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3687
3688 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3689 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3690 case NES_IWARP_SQ_OP_RDMAW:
3691 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3692 entry->opcode = IB_WC_RDMA_WRITE;
3693 break;
3694 case NES_IWARP_SQ_OP_RDMAR:
3695 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3696 entry->opcode = IB_WC_RDMA_READ;
3697 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3698 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3699 break;
3700 case NES_IWARP_SQ_OP_SENDINV:
3701 case NES_IWARP_SQ_OP_SENDSEINV:
3702 case NES_IWARP_SQ_OP_SEND:
3703 case NES_IWARP_SQ_OP_SENDSE:
3704 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3705 entry->opcode = IB_WC_SEND;
3706 break;
3707 case NES_IWARP_SQ_OP_LOCINV:
3708 entry->opcode = IB_WC_LOCAL_INV;
3709 break;
3710 case NES_IWARP_SQ_OP_FAST_REG:
3711 entry->opcode = IB_WC_REG_MR;
3712 break;
3713 }
3714
3715 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3716 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3717 move_cq_head = 0;
3718 wq_tail = nesqp->hwqp.sq_tail;
3719 }
3720 } else {
3721 /* Working on a RQ Completion*/
3722 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3723 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3724 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3725 entry->opcode = IB_WC_RECV;
3726
3727 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3728 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3729 move_cq_head = 0;
3730 wq_tail = nesqp->hwqp.rq_tail;
3731 }
3732 }
3733
3734 entry->wr_id = wrid;
3735 entry++;
3736 cqe_count++;
3737 }
3738
3739 if (move_cq_head) {
3740 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3741 if (++head >= cq_size)
3742 head = 0;
3743 nescq->polled_completions++;
3744
3745 if ((nescq->polled_completions > (cq_size / 2)) ||
3746 (nescq->polled_completions == 255)) {
3747 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3748 " are pending %u of %u.\n",
3749 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3750 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3751 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3752 nescq->polled_completions = 0;
3753 }
3754 } else {
3755 /* Update the wqe index and set status to flush */
3756 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3757 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3758 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3759 cpu_to_le32(wqe_index);
3760 move_cq_head = 1; /* ready for next pass */
3761 }
3762 }
3763
3764 if (nescq->polled_completions) {
3765 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3766 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3767 nescq->polled_completions = 0;
3768 }
3769
3770 nescq->hw_cq.cq_head = head;
3771 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3772 cqe_count, nescq->hw_cq.cq_number);
3773
3774 spin_unlock_irqrestore(&nescq->lock, flags);
3775
3776 return cqe_count;
3777 }
3778
3779
3780 /**
3781 * nes_req_notify_cq
3782 */
nes_req_notify_cq(struct ib_cq * ibcq,enum ib_cq_notify_flags notify_flags)3783 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3784 {
3785 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3786 struct nes_device *nesdev = nesvnic->nesdev;
3787 struct nes_cq *nescq = to_nescq(ibcq);
3788 u32 cq_arm;
3789
3790 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3791 nescq->hw_cq.cq_number);
3792
3793 cq_arm = nescq->hw_cq.cq_number;
3794 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3795 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3796 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3797 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3798 else
3799 return -EINVAL;
3800
3801 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3802 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3803
3804 return 0;
3805 }
3806
nes_port_immutable(struct ib_device * ibdev,u8 port_num,struct ib_port_immutable * immutable)3807 static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3808 struct ib_port_immutable *immutable)
3809 {
3810 struct ib_port_attr attr;
3811 int err;
3812
3813 err = nes_query_port(ibdev, port_num, &attr);
3814 if (err)
3815 return err;
3816
3817 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3818 immutable->gid_tbl_len = attr.gid_tbl_len;
3819 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
3820
3821 return 0;
3822 }
3823
3824 /**
3825 * nes_init_ofa_device
3826 */
nes_init_ofa_device(struct net_device * netdev)3827 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3828 {
3829 struct nes_ib_device *nesibdev;
3830 struct nes_vnic *nesvnic = netdev_priv(netdev);
3831 struct nes_device *nesdev = nesvnic->nesdev;
3832
3833 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3834 if (nesibdev == NULL) {
3835 return NULL;
3836 }
3837 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3838 nesibdev->ibdev.owner = THIS_MODULE;
3839
3840 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3841 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3842 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3843
3844 nesibdev->ibdev.uverbs_cmd_mask =
3845 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3846 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3847 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3848 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3849 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3850 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3851 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3852 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3853 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3854 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3855 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3856 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3857 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3858 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3859 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3860 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3861 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3862 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3863 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3864 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3865 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3866 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3867
3868 nesibdev->ibdev.phys_port_cnt = 1;
3869 nesibdev->ibdev.num_comp_vectors = 1;
3870 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3871 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3872 nesibdev->ibdev.query_device = nes_query_device;
3873 nesibdev->ibdev.query_port = nes_query_port;
3874 nesibdev->ibdev.query_pkey = nes_query_pkey;
3875 nesibdev->ibdev.query_gid = nes_query_gid;
3876 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3877 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3878 nesibdev->ibdev.mmap = nes_mmap;
3879 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3880 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3881 nesibdev->ibdev.create_ah = nes_create_ah;
3882 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3883 nesibdev->ibdev.create_qp = nes_create_qp;
3884 nesibdev->ibdev.modify_qp = nes_modify_qp;
3885 nesibdev->ibdev.query_qp = nes_query_qp;
3886 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3887 nesibdev->ibdev.create_cq = nes_create_cq;
3888 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3889 nesibdev->ibdev.poll_cq = nes_poll_cq;
3890 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3891 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3892 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3893 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3894 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3895 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3896 nesibdev->ibdev.bind_mw = nes_bind_mw;
3897
3898 nesibdev->ibdev.alloc_mr = nes_alloc_mr;
3899 nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
3900
3901 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3902 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3903 nesibdev->ibdev.process_mad = nes_process_mad;
3904
3905 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3906 nesibdev->ibdev.post_send = nes_post_send;
3907 nesibdev->ibdev.post_recv = nes_post_recv;
3908
3909 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3910 if (nesibdev->ibdev.iwcm == NULL) {
3911 ib_dealloc_device(&nesibdev->ibdev);
3912 return NULL;
3913 }
3914 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3915 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3916 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3917 nesibdev->ibdev.iwcm->connect = nes_connect;
3918 nesibdev->ibdev.iwcm->accept = nes_accept;
3919 nesibdev->ibdev.iwcm->reject = nes_reject;
3920 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3921 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3922 nesibdev->ibdev.get_port_immutable = nes_port_immutable;
3923
3924 return nesibdev;
3925 }
3926
3927
3928 /**
3929 * nes_handle_delayed_event
3930 */
nes_handle_delayed_event(unsigned long data)3931 static void nes_handle_delayed_event(unsigned long data)
3932 {
3933 struct nes_vnic *nesvnic = (void *) data;
3934
3935 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3936 struct ib_event event;
3937
3938 event.device = &nesvnic->nesibdev->ibdev;
3939 if (!event.device)
3940 goto stop_timer;
3941 event.event = nesvnic->delayed_event;
3942 event.element.port_num = nesvnic->logical_port + 1;
3943 ib_dispatch_event(&event);
3944 }
3945
3946 stop_timer:
3947 nesvnic->event_timer.function = NULL;
3948 }
3949
3950
nes_port_ibevent(struct nes_vnic * nesvnic)3951 void nes_port_ibevent(struct nes_vnic *nesvnic)
3952 {
3953 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3954 struct nes_device *nesdev = nesvnic->nesdev;
3955 struct ib_event event;
3956 event.device = &nesibdev->ibdev;
3957 event.element.port_num = nesvnic->logical_port + 1;
3958 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3959
3960 if (!nesvnic->event_timer.function) {
3961 ib_dispatch_event(&event);
3962 nesvnic->last_dispatched_event = event.event;
3963 nesvnic->event_timer.function = nes_handle_delayed_event;
3964 nesvnic->event_timer.data = (unsigned long) nesvnic;
3965 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3966 add_timer(&nesvnic->event_timer);
3967 } else {
3968 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3969 }
3970 nesvnic->delayed_event = event.event;
3971 }
3972
3973
3974 /**
3975 * nes_destroy_ofa_device
3976 */
nes_destroy_ofa_device(struct nes_ib_device * nesibdev)3977 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3978 {
3979 if (nesibdev == NULL)
3980 return;
3981
3982 nes_unregister_ofa_device(nesibdev);
3983
3984 kfree(nesibdev->ibdev.iwcm);
3985 ib_dealloc_device(&nesibdev->ibdev);
3986 }
3987
3988
3989 /**
3990 * nes_register_ofa_device
3991 */
nes_register_ofa_device(struct nes_ib_device * nesibdev)3992 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3993 {
3994 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3995 struct nes_device *nesdev = nesvnic->nesdev;
3996 struct nes_adapter *nesadapter = nesdev->nesadapter;
3997 int i, ret;
3998
3999 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
4000 if (ret) {
4001 return ret;
4002 }
4003
4004 /* Get the resources allocated to this device */
4005 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
4006 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
4007 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
4008 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
4009
4010 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4011 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4012 if (ret) {
4013 while (i > 0) {
4014 i--;
4015 device_remove_file(&nesibdev->ibdev.dev,
4016 nes_dev_attributes[i]);
4017 }
4018 ib_unregister_device(&nesibdev->ibdev);
4019 return ret;
4020 }
4021 }
4022
4023 nesvnic->of_device_registered = 1;
4024
4025 return 0;
4026 }
4027
4028
4029 /**
4030 * nes_unregister_ofa_device
4031 */
nes_unregister_ofa_device(struct nes_ib_device * nesibdev)4032 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
4033 {
4034 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4035 int i;
4036
4037 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4038 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4039 }
4040
4041 if (nesvnic->of_device_registered) {
4042 ib_unregister_device(&nesibdev->ibdev);
4043 }
4044
4045 nesvnic->of_device_registered = 0;
4046 }
4047