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
55 /**
56 * nes_alloc_mw
57 */
nes_alloc_mw(struct ib_pd * ibpd)58 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
59 struct nes_pd *nespd = to_nespd(ibpd);
60 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
61 struct nes_device *nesdev = nesvnic->nesdev;
62 struct nes_adapter *nesadapter = nesdev->nesadapter;
63 struct nes_cqp_request *cqp_request;
64 struct nes_mr *nesmr;
65 struct ib_mw *ibmw;
66 struct nes_hw_cqp_wqe *cqp_wqe;
67 int ret;
68 u32 stag;
69 u32 stag_index = 0;
70 u32 next_stag_index = 0;
71 u32 driver_key = 0;
72 u8 stag_key = 0;
73
74 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
75 stag_key = (u8)next_stag_index;
76
77 driver_key = 0;
78
79 next_stag_index >>= 8;
80 next_stag_index %= nesadapter->max_mr;
81
82 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
83 nesadapter->max_mr, &stag_index, &next_stag_index);
84 if (ret) {
85 return ERR_PTR(ret);
86 }
87
88 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
89 if (!nesmr) {
90 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
91 return ERR_PTR(-ENOMEM);
92 }
93
94 stag = stag_index << 8;
95 stag |= driver_key;
96 stag += (u32)stag_key;
97
98 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
99 stag, stag_index);
100
101 /* Register the region with the adapter */
102 cqp_request = nes_get_cqp_request(nesdev);
103 if (cqp_request == NULL) {
104 kfree(nesmr);
105 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
106 return ERR_PTR(-ENOMEM);
107 }
108
109 cqp_request->waiting = 1;
110 cqp_wqe = &cqp_request->cqp_wqe;
111
112 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
113 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
114 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
115 NES_CQP_STAG_REM_ACC_EN);
116
117 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
119 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
120
121 atomic_set(&cqp_request->refcount, 2);
122 nes_post_cqp_request(nesdev, cqp_request);
123
124 /* Wait for CQP */
125 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
126 NES_EVENT_TIMEOUT);
127 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
128 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
129 stag, ret, cqp_request->major_code, cqp_request->minor_code);
130 if ((!ret) || (cqp_request->major_code)) {
131 nes_put_cqp_request(nesdev, cqp_request);
132 kfree(nesmr);
133 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
134 if (!ret) {
135 return ERR_PTR(-ETIME);
136 } else {
137 return ERR_PTR(-ENOMEM);
138 }
139 }
140 nes_put_cqp_request(nesdev, cqp_request);
141
142 nesmr->ibmw.rkey = stag;
143 nesmr->mode = IWNES_MEMREG_TYPE_MW;
144 ibmw = &nesmr->ibmw;
145 nesmr->pbl_4k = 0;
146 nesmr->pbls_used = 0;
147
148 return ibmw;
149 }
150
151
152 /**
153 * nes_dealloc_mw
154 */
nes_dealloc_mw(struct ib_mw * ibmw)155 static int nes_dealloc_mw(struct ib_mw *ibmw)
156 {
157 struct nes_mr *nesmr = to_nesmw(ibmw);
158 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
159 struct nes_device *nesdev = nesvnic->nesdev;
160 struct nes_adapter *nesadapter = nesdev->nesadapter;
161 struct nes_hw_cqp_wqe *cqp_wqe;
162 struct nes_cqp_request *cqp_request;
163 int err = 0;
164 int ret;
165
166 /* Deallocate the window with the adapter */
167 cqp_request = nes_get_cqp_request(nesdev);
168 if (cqp_request == NULL) {
169 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
170 return -ENOMEM;
171 }
172 cqp_request->waiting = 1;
173 cqp_wqe = &cqp_request->cqp_wqe;
174 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
176 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
177
178 atomic_set(&cqp_request->refcount, 2);
179 nes_post_cqp_request(nesdev, cqp_request);
180
181 /* Wait for CQP */
182 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
183 ibmw->rkey);
184 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
185 NES_EVENT_TIMEOUT);
186 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
187 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
188 ret, cqp_request->major_code, cqp_request->minor_code);
189 if (!ret)
190 err = -ETIME;
191 else if (cqp_request->major_code)
192 err = -EIO;
193
194 nes_put_cqp_request(nesdev, cqp_request);
195
196 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
197 (ibmw->rkey & 0x0fffff00) >> 8);
198 kfree(nesmr);
199
200 return err;
201 }
202
203
204 /**
205 * nes_bind_mw
206 */
nes_bind_mw(struct ib_qp * ibqp,struct ib_mw * ibmw,struct ib_mw_bind * ibmw_bind)207 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
208 struct ib_mw_bind *ibmw_bind)
209 {
210 u64 u64temp;
211 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
212 struct nes_device *nesdev = nesvnic->nesdev;
213 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
214 struct nes_qp *nesqp = to_nesqp(ibqp);
215 struct nes_hw_qp_wqe *wqe;
216 unsigned long flags = 0;
217 u32 head;
218 u32 wqe_misc = 0;
219 u32 qsize;
220
221 if (nesqp->ibqp_state > IB_QPS_RTS)
222 return -EINVAL;
223
224 spin_lock_irqsave(&nesqp->lock, flags);
225
226 head = nesqp->hwqp.sq_head;
227 qsize = nesqp->hwqp.sq_tail;
228
229 /* Check for SQ overflow */
230 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
231 spin_unlock_irqrestore(&nesqp->lock, flags);
232 return -ENOMEM;
233 }
234
235 wqe = &nesqp->hwqp.sq_vbase[head];
236 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
237 nes_fill_init_qp_wqe(wqe, nesqp, head);
238 u64temp = ibmw_bind->wr_id;
239 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
240 wqe_misc = NES_IWARP_SQ_OP_BIND;
241
242 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
243
244 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
245 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
246
247 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
248 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
249 }
250 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
251 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
252 }
253
254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
258 ibmw_bind->length);
259 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
260 u64temp = (u64)ibmw_bind->addr;
261 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
262
263 head++;
264 if (head >= qsize)
265 head = 0;
266
267 nesqp->hwqp.sq_head = head;
268 barrier();
269
270 nes_write32(nesdev->regs+NES_WQE_ALLOC,
271 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
272
273 spin_unlock_irqrestore(&nesqp->lock, flags);
274
275 return 0;
276 }
277
278
279 /*
280 * nes_alloc_fast_mr
281 */
alloc_fast_reg_mr(struct nes_device * nesdev,struct nes_pd * nespd,u32 stag,u32 page_count)282 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
283 u32 stag, u32 page_count)
284 {
285 struct nes_hw_cqp_wqe *cqp_wqe;
286 struct nes_cqp_request *cqp_request;
287 unsigned long flags;
288 int ret;
289 struct nes_adapter *nesadapter = nesdev->nesadapter;
290 u32 opcode = 0;
291 u16 major_code;
292 u64 region_length = page_count * PAGE_SIZE;
293
294
295 cqp_request = nes_get_cqp_request(nesdev);
296 if (cqp_request == NULL) {
297 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
298 return -ENOMEM;
299 }
300 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
301 "region_length = %llu\n",
302 page_count, region_length);
303 cqp_request->waiting = 1;
304 cqp_wqe = &cqp_request->cqp_wqe;
305
306 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
307 if (nesadapter->free_4kpbl > 0) {
308 nesadapter->free_4kpbl--;
309 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
310 } else {
311 /* No 4kpbl's available: */
312 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
313 nes_debug(NES_DBG_MR, "Out of Pbls\n");
314 nes_free_cqp_request(nesdev, cqp_request);
315 return -ENOMEM;
316 }
317
318 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
319 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
320 NES_CQP_STAG_REM_ACC_EN;
321 /*
322 * The current OFED API does not support the zero based TO option.
323 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
324 * the API does not support that ability to have the MR set for local
325 * access only when created and not allow the SQ op to override. Given
326 * this the remote enable must be set here.
327 */
328
329 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
330 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
331 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
332
333 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
334 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
335 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
336 cpu_to_le32(nespd->pd_id & 0x00007fff);
337
338 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
339 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
340 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
341 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
342 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
343 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
344 barrier();
345
346 atomic_set(&cqp_request->refcount, 2);
347 nes_post_cqp_request(nesdev, cqp_request);
348
349 /* Wait for CQP */
350 ret = wait_event_timeout(cqp_request->waitq,
351 (0 != cqp_request->request_done),
352 NES_EVENT_TIMEOUT);
353
354 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
355 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
356 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
357 cqp_request->minor_code);
358 major_code = cqp_request->major_code;
359 nes_put_cqp_request(nesdev, cqp_request);
360
361 if (!ret || major_code) {
362 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
363 nesadapter->free_4kpbl++;
364 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
365 }
366
367 if (!ret)
368 return -ETIME;
369 else if (major_code)
370 return -EIO;
371 return 0;
372 }
373
374 /*
375 * nes_alloc_fast_reg_mr
376 */
nes_alloc_fast_reg_mr(struct ib_pd * ibpd,int max_page_list_len)377 static struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int max_page_list_len)
378 {
379 struct nes_pd *nespd = to_nespd(ibpd);
380 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
381 struct nes_device *nesdev = nesvnic->nesdev;
382 struct nes_adapter *nesadapter = nesdev->nesadapter;
383
384 u32 next_stag_index;
385 u8 stag_key = 0;
386 u32 driver_key = 0;
387 int err = 0;
388 u32 stag_index = 0;
389 struct nes_mr *nesmr;
390 u32 stag;
391 int ret;
392 struct ib_mr *ibmr;
393 /*
394 * Note: Set to always use a fixed length single page entry PBL. This is to allow
395 * for the fast_reg_mr operation to always know the size of the PBL.
396 */
397 if (max_page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
398 return ERR_PTR(-E2BIG);
399
400 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
401 stag_key = (u8)next_stag_index;
402 next_stag_index >>= 8;
403 next_stag_index %= nesadapter->max_mr;
404
405 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
406 nesadapter->max_mr, &stag_index,
407 &next_stag_index);
408 if (err)
409 return ERR_PTR(err);
410
411 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
412 if (!nesmr) {
413 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
414 return ERR_PTR(-ENOMEM);
415 }
416
417 stag = stag_index << 8;
418 stag |= driver_key;
419 stag += (u32)stag_key;
420
421 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
422 stag, stag_index);
423
424 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_page_list_len);
425
426 if (ret == 0) {
427 nesmr->ibmr.rkey = stag;
428 nesmr->ibmr.lkey = stag;
429 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
430 ibmr = &nesmr->ibmr;
431 } else {
432 kfree(nesmr);
433 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
434 ibmr = ERR_PTR(-ENOMEM);
435 }
436 return ibmr;
437 }
438
439 /*
440 * nes_alloc_fast_reg_page_list
441 */
nes_alloc_fast_reg_page_list(struct ib_device * ibdev,int page_list_len)442 static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list(
443 struct ib_device *ibdev,
444 int page_list_len)
445 {
446 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
447 struct nes_device *nesdev = nesvnic->nesdev;
448 struct ib_fast_reg_page_list *pifrpl;
449 struct nes_ib_fast_reg_page_list *pnesfrpl;
450
451 if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
452 return ERR_PTR(-E2BIG);
453 /*
454 * Allocate the ib_fast_reg_page_list structure, the
455 * nes_fast_bpl structure, and the PLB table.
456 */
457 pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) +
458 page_list_len * sizeof(u64), GFP_KERNEL);
459
460 if (!pnesfrpl)
461 return ERR_PTR(-ENOMEM);
462
463 pifrpl = &pnesfrpl->ibfrpl;
464 pifrpl->page_list = &pnesfrpl->pbl;
465 pifrpl->max_page_list_len = page_list_len;
466 /*
467 * Allocate the WQE PBL
468 */
469 pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev,
470 page_list_len * sizeof(u64),
471 &pnesfrpl->nes_wqe_pbl.paddr);
472
473 if (!pnesfrpl->nes_wqe_pbl.kva) {
474 kfree(pnesfrpl);
475 return ERR_PTR(-ENOMEM);
476 }
477 nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, "
478 "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, "
479 "pbl.paddr = %llx\n", pnesfrpl, &pnesfrpl->ibfrpl,
480 pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva,
481 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr);
482
483 return pifrpl;
484 }
485
486 /*
487 * nes_free_fast_reg_page_list
488 */
nes_free_fast_reg_page_list(struct ib_fast_reg_page_list * pifrpl)489 static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl)
490 {
491 struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device);
492 struct nes_device *nesdev = nesvnic->nesdev;
493 struct nes_ib_fast_reg_page_list *pnesfrpl;
494
495 pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl);
496 /*
497 * Free the WQE PBL.
498 */
499 pci_free_consistent(nesdev->pcidev,
500 pifrpl->max_page_list_len * sizeof(u64),
501 pnesfrpl->nes_wqe_pbl.kva,
502 pnesfrpl->nes_wqe_pbl.paddr);
503 /*
504 * Free the PBL structure
505 */
506 kfree(pnesfrpl);
507 }
508
509 /**
510 * nes_query_device
511 */
nes_query_device(struct ib_device * ibdev,struct ib_device_attr * props)512 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
513 {
514 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
515 struct nes_device *nesdev = nesvnic->nesdev;
516 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
517
518 memset(props, 0, sizeof(*props));
519 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
520
521 props->fw_ver = nesdev->nesadapter->firmware_version;
522 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
523 props->vendor_id = nesdev->nesadapter->vendor_id;
524 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
525 props->hw_ver = nesdev->nesadapter->hw_rev;
526 props->max_mr_size = 0x80000000;
527 props->max_qp = nesibdev->max_qp;
528 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
529 props->max_sge = nesdev->nesadapter->max_sge;
530 props->max_cq = nesibdev->max_cq;
531 props->max_cqe = nesdev->nesadapter->max_cqe;
532 props->max_mr = nesibdev->max_mr;
533 props->max_mw = nesibdev->max_mr;
534 props->max_pd = nesibdev->max_pd;
535 props->max_sge_rd = 1;
536 switch (nesdev->nesadapter->max_irrq_wr) {
537 case 0:
538 props->max_qp_rd_atom = 2;
539 break;
540 case 1:
541 props->max_qp_rd_atom = 8;
542 break;
543 case 2:
544 props->max_qp_rd_atom = 32;
545 break;
546 case 3:
547 props->max_qp_rd_atom = 64;
548 break;
549 default:
550 props->max_qp_rd_atom = 0;
551 }
552 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
553 props->atomic_cap = IB_ATOMIC_NONE;
554 props->max_map_per_fmr = 1;
555
556 return 0;
557 }
558
559
560 /**
561 * nes_query_port
562 */
nes_query_port(struct ib_device * ibdev,u8 port,struct ib_port_attr * props)563 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
564 {
565 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
566 struct net_device *netdev = nesvnic->netdev;
567
568 memset(props, 0, sizeof(*props));
569
570 props->max_mtu = IB_MTU_4096;
571
572 if (netdev->mtu >= 4096)
573 props->active_mtu = IB_MTU_4096;
574 else if (netdev->mtu >= 2048)
575 props->active_mtu = IB_MTU_2048;
576 else if (netdev->mtu >= 1024)
577 props->active_mtu = IB_MTU_1024;
578 else if (netdev->mtu >= 512)
579 props->active_mtu = IB_MTU_512;
580 else
581 props->active_mtu = IB_MTU_256;
582
583 props->lid = 1;
584 props->lmc = 0;
585 props->sm_lid = 0;
586 props->sm_sl = 0;
587 if (netif_queue_stopped(netdev))
588 props->state = IB_PORT_DOWN;
589 else if (nesvnic->linkup)
590 props->state = IB_PORT_ACTIVE;
591 else
592 props->state = IB_PORT_DOWN;
593 props->phys_state = 0;
594 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
595 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
596 props->gid_tbl_len = 1;
597 props->pkey_tbl_len = 1;
598 props->qkey_viol_cntr = 0;
599 props->active_width = IB_WIDTH_4X;
600 props->active_speed = 1;
601 props->max_msg_sz = 0x80000000;
602
603 return 0;
604 }
605
606
607 /**
608 * nes_query_pkey
609 */
nes_query_pkey(struct ib_device * ibdev,u8 port,u16 index,u16 * pkey)610 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
611 {
612 *pkey = 0;
613 return 0;
614 }
615
616
617 /**
618 * nes_query_gid
619 */
nes_query_gid(struct ib_device * ibdev,u8 port,int index,union ib_gid * gid)620 static int nes_query_gid(struct ib_device *ibdev, u8 port,
621 int index, union ib_gid *gid)
622 {
623 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
624
625 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
626 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
627
628 return 0;
629 }
630
631
632 /**
633 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
634 * of all objects associated with a particular user-mode client.
635 */
nes_alloc_ucontext(struct ib_device * ibdev,struct ib_udata * udata)636 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
637 struct ib_udata *udata)
638 {
639 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
640 struct nes_device *nesdev = nesvnic->nesdev;
641 struct nes_adapter *nesadapter = nesdev->nesadapter;
642 struct nes_alloc_ucontext_req req;
643 struct nes_alloc_ucontext_resp uresp;
644 struct nes_ucontext *nes_ucontext;
645 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
646
647
648 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
649 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
650 return ERR_PTR(-EINVAL);
651 }
652
653 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
654 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
655 req.userspace_ver, NES_ABI_USERSPACE_VER);
656 return ERR_PTR(-EINVAL);
657 }
658
659
660 memset(&uresp, 0, sizeof uresp);
661
662 uresp.max_qps = nesibdev->max_qp;
663 uresp.max_pds = nesibdev->max_pd;
664 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
665 uresp.virtwq = nesadapter->virtwq;
666 uresp.kernel_ver = NES_ABI_KERNEL_VER;
667
668 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
669 if (!nes_ucontext)
670 return ERR_PTR(-ENOMEM);
671
672 nes_ucontext->nesdev = nesdev;
673 nes_ucontext->mmap_wq_offset = uresp.max_pds;
674 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
675 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
676 PAGE_SIZE;
677
678
679 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
680 kfree(nes_ucontext);
681 return ERR_PTR(-EFAULT);
682 }
683
684 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
685 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
686 atomic_set(&nes_ucontext->usecnt, 1);
687 return &nes_ucontext->ibucontext;
688 }
689
690
691 /**
692 * nes_dealloc_ucontext
693 */
nes_dealloc_ucontext(struct ib_ucontext * context)694 static int nes_dealloc_ucontext(struct ib_ucontext *context)
695 {
696 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
697 /* struct nes_device *nesdev = nesvnic->nesdev; */
698 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
699
700 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
701 return 0;
702 kfree(nes_ucontext);
703 return 0;
704 }
705
706
707 /**
708 * nes_mmap
709 */
nes_mmap(struct ib_ucontext * context,struct vm_area_struct * vma)710 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
711 {
712 unsigned long index;
713 struct nes_vnic *nesvnic = to_nesvnic(context->device);
714 struct nes_device *nesdev = nesvnic->nesdev;
715 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
716 struct nes_ucontext *nes_ucontext;
717 struct nes_qp *nesqp;
718
719 nes_ucontext = to_nesucontext(context);
720
721
722 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
723 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
724 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
725 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
726 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
727 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
728 return -EFAULT;
729 }
730 nesqp = nes_ucontext->mmap_nesqp[index];
731 if (nesqp == NULL) {
732 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
733 return -EFAULT;
734 }
735 if (remap_pfn_range(vma, vma->vm_start,
736 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
737 vma->vm_end - vma->vm_start,
738 vma->vm_page_prot)) {
739 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
740 return -EAGAIN;
741 }
742 vma->vm_private_data = nesqp;
743 return 0;
744 } else {
745 index = vma->vm_pgoff;
746 if (!test_bit(index, nes_ucontext->allocated_doorbells))
747 return -EFAULT;
748
749 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
750 if (io_remap_pfn_range(vma, vma->vm_start,
751 (nesdev->doorbell_start +
752 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
753 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
754 return -EAGAIN;
755 vma->vm_private_data = nes_ucontext;
756 return 0;
757 }
758
759 return -ENOSYS;
760 }
761
762
763 /**
764 * nes_alloc_pd
765 */
nes_alloc_pd(struct ib_device * ibdev,struct ib_ucontext * context,struct ib_udata * udata)766 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
767 struct ib_ucontext *context, struct ib_udata *udata)
768 {
769 struct nes_pd *nespd;
770 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
771 struct nes_device *nesdev = nesvnic->nesdev;
772 struct nes_adapter *nesadapter = nesdev->nesadapter;
773 struct nes_ucontext *nesucontext;
774 struct nes_alloc_pd_resp uresp;
775 u32 pd_num = 0;
776 int err;
777
778 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
779 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
780 netdev_refcnt_read(nesvnic->netdev));
781
782 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
783 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
784 if (err) {
785 return ERR_PTR(err);
786 }
787
788 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
789 if (!nespd) {
790 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
791 return ERR_PTR(-ENOMEM);
792 }
793
794 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
795 nespd, nesvnic->nesibdev->ibdev.name);
796
797 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
798
799 if (context) {
800 nesucontext = to_nesucontext(context);
801 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
802 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
803 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
804 nespd->mmap_db_index, nespd->pd_id);
805 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
806 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
807 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
808 kfree(nespd);
809 return ERR_PTR(-ENOMEM);
810 }
811
812 uresp.pd_id = nespd->pd_id;
813 uresp.mmap_db_index = nespd->mmap_db_index;
814 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
815 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
816 kfree(nespd);
817 return ERR_PTR(-EFAULT);
818 }
819
820 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
821 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
822 nesucontext->first_free_db = nespd->mmap_db_index + 1;
823 }
824
825 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
826 return &nespd->ibpd;
827 }
828
829
830 /**
831 * nes_dealloc_pd
832 */
nes_dealloc_pd(struct ib_pd * ibpd)833 static int nes_dealloc_pd(struct ib_pd *ibpd)
834 {
835 struct nes_ucontext *nesucontext;
836 struct nes_pd *nespd = to_nespd(ibpd);
837 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
838 struct nes_device *nesdev = nesvnic->nesdev;
839 struct nes_adapter *nesadapter = nesdev->nesadapter;
840
841 if ((ibpd->uobject) && (ibpd->uobject->context)) {
842 nesucontext = to_nesucontext(ibpd->uobject->context);
843 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
844 nespd->mmap_db_index);
845 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
846 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
847 if (nesucontext->first_free_db > nespd->mmap_db_index) {
848 nesucontext->first_free_db = nespd->mmap_db_index;
849 }
850 }
851
852 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
853 nespd->pd_id, nespd);
854 nes_free_resource(nesadapter, nesadapter->allocated_pds,
855 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
856 kfree(nespd);
857
858 return 0;
859 }
860
861
862 /**
863 * nes_create_ah
864 */
nes_create_ah(struct ib_pd * pd,struct ib_ah_attr * ah_attr)865 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
866 {
867 return ERR_PTR(-ENOSYS);
868 }
869
870
871 /**
872 * nes_destroy_ah
873 */
nes_destroy_ah(struct ib_ah * ah)874 static int nes_destroy_ah(struct ib_ah *ah)
875 {
876 return -ENOSYS;
877 }
878
879
880 /**
881 * nes_get_encoded_size
882 */
nes_get_encoded_size(int * size)883 static inline u8 nes_get_encoded_size(int *size)
884 {
885 u8 encoded_size = 0;
886 if (*size <= 32) {
887 *size = 32;
888 encoded_size = 1;
889 } else if (*size <= 128) {
890 *size = 128;
891 encoded_size = 2;
892 } else if (*size <= 512) {
893 *size = 512;
894 encoded_size = 3;
895 }
896 return (encoded_size);
897 }
898
899
900
901 /**
902 * nes_setup_virt_qp
903 */
nes_setup_virt_qp(struct nes_qp * nesqp,struct nes_pbl * nespbl,struct nes_vnic * nesvnic,int sq_size,int rq_size)904 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
905 struct nes_vnic *nesvnic, int sq_size, int rq_size)
906 {
907 unsigned long flags;
908 void *mem;
909 __le64 *pbl = NULL;
910 __le64 *tpbl;
911 __le64 *pblbuffer;
912 struct nes_device *nesdev = nesvnic->nesdev;
913 struct nes_adapter *nesadapter = nesdev->nesadapter;
914 u32 pbl_entries;
915 u8 rq_pbl_entries;
916 u8 sq_pbl_entries;
917
918 pbl_entries = nespbl->pbl_size >> 3;
919 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
920 nespbl->pbl_size, pbl_entries,
921 (void *)nespbl->pbl_vbase,
922 (unsigned long) nespbl->pbl_pbase);
923 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
924 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
925 /* the first pbl to be fro the rq_vbase... */
926 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
927 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
928 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
929 if (!nespbl->page) {
930 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
931 kfree(nespbl);
932 return -ENOMEM;
933 }
934
935 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
936 nesqp->page = nespbl->page;
937 if (!nesqp->hwqp.sq_vbase) {
938 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
939 kfree(nespbl);
940 return -ENOMEM;
941 }
942
943 /* Now to get to sq.. we need to calculate how many */
944 /* PBL entries were used by the rq.. */
945 pbl += sq_pbl_entries;
946 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
947 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
948 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
949
950 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
951 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
952 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
953 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
954 if (!nesadapter->free_256pbl) {
955 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
956 nespbl->pbl_pbase);
957 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
958 kunmap(nesqp->page);
959 kfree(nespbl);
960 return -ENOMEM;
961 }
962 nesadapter->free_256pbl--;
963 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
964
965 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
966 pblbuffer = nesqp->pbl_vbase;
967 if (!nesqp->pbl_vbase) {
968 /* memory allocated during nes_reg_user_mr() */
969 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
970 nespbl->pbl_pbase);
971 kfree(nespbl);
972 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
973 nesadapter->free_256pbl++;
974 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
975 kunmap(nesqp->page);
976 return -ENOMEM;
977 }
978 memset(nesqp->pbl_vbase, 0, 256);
979 /* fill in the page address in the pbl buffer.. */
980 tpbl = pblbuffer + 16;
981 pbl = (__le64 *)nespbl->pbl_vbase;
982 while (sq_pbl_entries--)
983 *tpbl++ = *pbl++;
984 tpbl = pblbuffer;
985 while (rq_pbl_entries--)
986 *tpbl++ = *pbl++;
987
988 /* done with memory allocated during nes_reg_user_mr() */
989 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
990 nespbl->pbl_pbase);
991 kfree(nespbl);
992
993 nesqp->qp_mem_size =
994 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
995 /* Round up to a multiple of a page */
996 nesqp->qp_mem_size += PAGE_SIZE - 1;
997 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
998
999 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1000 &nesqp->hwqp.q2_pbase);
1001
1002 if (!mem) {
1003 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1004 nesqp->pbl_vbase = NULL;
1005 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1006 nesadapter->free_256pbl++;
1007 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1008 kunmap(nesqp->page);
1009 return -ENOMEM;
1010 }
1011 nesqp->sq_kmapped = 1;
1012 nesqp->hwqp.q2_vbase = mem;
1013 mem += 256;
1014 memset(nesqp->hwqp.q2_vbase, 0, 256);
1015 nesqp->nesqp_context = mem;
1016 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1017 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1018
1019 return 0;
1020 }
1021
1022
1023 /**
1024 * nes_setup_mmap_qp
1025 */
nes_setup_mmap_qp(struct nes_qp * nesqp,struct nes_vnic * nesvnic,int sq_size,int rq_size)1026 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1027 int sq_size, int rq_size)
1028 {
1029 void *mem;
1030 struct nes_device *nesdev = nesvnic->nesdev;
1031
1032 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1033 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1034 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1035 256; /* this is Q2 */
1036 /* Round up to a multiple of a page */
1037 nesqp->qp_mem_size += PAGE_SIZE - 1;
1038 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1039
1040 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1041 &nesqp->hwqp.sq_pbase);
1042 if (!mem)
1043 return -ENOMEM;
1044 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1045 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1046 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1047
1048 memset(mem, 0, nesqp->qp_mem_size);
1049
1050 nesqp->hwqp.sq_vbase = mem;
1051 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1052
1053 nesqp->hwqp.rq_vbase = mem;
1054 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1055 sizeof(struct nes_hw_qp_wqe) * sq_size;
1056 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1057
1058 nesqp->hwqp.q2_vbase = mem;
1059 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1060 sizeof(struct nes_hw_qp_wqe) * rq_size;
1061 mem += 256;
1062 memset(nesqp->hwqp.q2_vbase, 0, 256);
1063
1064 nesqp->nesqp_context = mem;
1065 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1066 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1067 return 0;
1068 }
1069
1070
1071 /**
1072 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1073 */
nes_free_qp_mem(struct nes_device * nesdev,struct nes_qp * nesqp,int virt_wqs)1074 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1075 struct nes_qp *nesqp, int virt_wqs)
1076 {
1077 unsigned long flags;
1078 struct nes_adapter *nesadapter = nesdev->nesadapter;
1079 if (!virt_wqs) {
1080 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1081 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1082 }else {
1083 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1084 nesadapter->free_256pbl++;
1085 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1086 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1087 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1088 nesqp->pbl_vbase = NULL;
1089 if (nesqp->sq_kmapped) {
1090 nesqp->sq_kmapped = 0;
1091 kunmap(nesqp->page);
1092 }
1093 }
1094 }
1095
1096
1097 /**
1098 * nes_create_qp
1099 */
nes_create_qp(struct ib_pd * ibpd,struct ib_qp_init_attr * init_attr,struct ib_udata * udata)1100 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1101 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1102 {
1103 u64 u64temp= 0;
1104 u64 u64nesqp = 0;
1105 struct nes_pd *nespd = to_nespd(ibpd);
1106 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1107 struct nes_device *nesdev = nesvnic->nesdev;
1108 struct nes_adapter *nesadapter = nesdev->nesadapter;
1109 struct nes_qp *nesqp;
1110 struct nes_cq *nescq;
1111 struct nes_ucontext *nes_ucontext;
1112 struct nes_hw_cqp_wqe *cqp_wqe;
1113 struct nes_cqp_request *cqp_request;
1114 struct nes_create_qp_req req;
1115 struct nes_create_qp_resp uresp;
1116 struct nes_pbl *nespbl = NULL;
1117 u32 qp_num = 0;
1118 u32 opcode = 0;
1119 /* u32 counter = 0; */
1120 void *mem;
1121 unsigned long flags;
1122 int ret;
1123 int err;
1124 int virt_wqs = 0;
1125 int sq_size;
1126 int rq_size;
1127 u8 sq_encoded_size;
1128 u8 rq_encoded_size;
1129 /* int counter; */
1130
1131 if (init_attr->create_flags)
1132 return ERR_PTR(-EINVAL);
1133
1134 atomic_inc(&qps_created);
1135 switch (init_attr->qp_type) {
1136 case IB_QPT_RC:
1137 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1138 init_attr->cap.max_inline_data = 0;
1139 } else {
1140 init_attr->cap.max_inline_data = 64;
1141 }
1142 sq_size = init_attr->cap.max_send_wr;
1143 rq_size = init_attr->cap.max_recv_wr;
1144
1145 /* check if the encoded sizes are OK or not... */
1146 sq_encoded_size = nes_get_encoded_size(&sq_size);
1147 rq_encoded_size = nes_get_encoded_size(&rq_size);
1148
1149 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1150 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1151 rq_size, sq_size);
1152 return ERR_PTR(-EINVAL);
1153 }
1154
1155 init_attr->cap.max_send_wr = sq_size -2;
1156 init_attr->cap.max_recv_wr = rq_size -1;
1157 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1158
1159 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1160 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1161 if (ret) {
1162 return ERR_PTR(ret);
1163 }
1164
1165 /* Need 512 (actually now 1024) byte alignment on this structure */
1166 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1167 if (!mem) {
1168 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1169 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1170 return ERR_PTR(-ENOMEM);
1171 }
1172 u64nesqp = (unsigned long)mem;
1173 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1174 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1175 u64nesqp &= ~u64temp;
1176 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1177 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1178 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1179 nesqp->allocated_buffer = mem;
1180
1181 if (udata) {
1182 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1183 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1184 kfree(nesqp->allocated_buffer);
1185 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1186 return NULL;
1187 }
1188 if (req.user_wqe_buffers) {
1189 virt_wqs = 1;
1190 }
1191 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1192 nesqp->user_mode = 1;
1193 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1194 if (virt_wqs) {
1195 err = 1;
1196 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1197 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1198 list_del(&nespbl->list);
1199 err = 0;
1200 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1201 nespbl, nespbl->user_base);
1202 break;
1203 }
1204 }
1205 if (err) {
1206 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1207 (long long unsigned int)req.user_wqe_buffers);
1208 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1209 kfree(nesqp->allocated_buffer);
1210 return ERR_PTR(-EFAULT);
1211 }
1212 }
1213
1214 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1215 nesqp->mmap_sq_db_index =
1216 find_next_zero_bit(nes_ucontext->allocated_wqs,
1217 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1218 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1219 nespd->mmap_db_index); */
1220 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1221 nes_debug(NES_DBG_QP,
1222 "db index > max user regions, failing create QP\n");
1223 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1224 if (virt_wqs) {
1225 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1226 nespbl->pbl_pbase);
1227 kfree(nespbl);
1228 }
1229 kfree(nesqp->allocated_buffer);
1230 return ERR_PTR(-ENOMEM);
1231 }
1232 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1233 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1234 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1235 } else {
1236 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1237 kfree(nesqp->allocated_buffer);
1238 return ERR_PTR(-EFAULT);
1239 }
1240 }
1241 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1242 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1243 if (err) {
1244 nes_debug(NES_DBG_QP,
1245 "error geting qp mem code = %d\n", err);
1246 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1247 kfree(nesqp->allocated_buffer);
1248 return ERR_PTR(-ENOMEM);
1249 }
1250
1251 nesqp->hwqp.sq_size = sq_size;
1252 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1253 nesqp->hwqp.sq_head = 1;
1254 nesqp->hwqp.rq_size = rq_size;
1255 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1256 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1257 (void *)nesqp->nesqp_context_pbase);
1258 */
1259 nesqp->hwqp.qp_id = qp_num;
1260 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1261 nesqp->nespd = nespd;
1262
1263 nescq = to_nescq(init_attr->send_cq);
1264 nesqp->nesscq = nescq;
1265 nescq = to_nescq(init_attr->recv_cq);
1266 nesqp->nesrcq = nescq;
1267
1268 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1269 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1270 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1271 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1272 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1273 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1274 if (!udata) {
1275 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1276 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1277 }
1278 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1279 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1280 u64temp = (u64)nesqp->hwqp.sq_pbase;
1281 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1282 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1283
1284
1285 if (!virt_wqs) {
1286 u64temp = (u64)nesqp->hwqp.sq_pbase;
1287 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1288 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1289 u64temp = (u64)nesqp->hwqp.rq_pbase;
1290 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1291 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1292 } else {
1293 u64temp = (u64)nesqp->pbl_pbase;
1294 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1295 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1296 }
1297
1298 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1299 nesvnic->next_qp_nic_index,
1300 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1301 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1302 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1303 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1304 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1305 nesvnic->next_qp_nic_index++;
1306 if ((nesvnic->next_qp_nic_index > 3) ||
1307 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1308 nesvnic->next_qp_nic_index = 0;
1309 }
1310 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1311
1312 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1313 u64temp = (u64)nesqp->hwqp.q2_pbase;
1314 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1315 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1316 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1317 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1318 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1319 NES_QPCONTEXT_ORDIRD_AAH |
1320 ((((u32)nesadapter->max_irrq_wr) <<
1321 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1322 if (disable_mpa_crc) {
1323 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1324 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1325 }
1326
1327
1328 /* Create the QP */
1329 cqp_request = nes_get_cqp_request(nesdev);
1330 if (cqp_request == NULL) {
1331 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1332 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1333 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1334 kfree(nesqp->allocated_buffer);
1335 return ERR_PTR(-ENOMEM);
1336 }
1337 cqp_request->waiting = 1;
1338 cqp_wqe = &cqp_request->cqp_wqe;
1339
1340 if (!virt_wqs) {
1341 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1342 NES_CQP_QP_IWARP_STATE_IDLE;
1343 } else {
1344 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1345 NES_CQP_QP_IWARP_STATE_IDLE;
1346 }
1347 opcode |= NES_CQP_QP_CQS_VALID;
1348 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1349 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1350 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1351
1352 u64temp = (u64)nesqp->nesqp_context_pbase;
1353 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1354
1355 atomic_set(&cqp_request->refcount, 2);
1356 nes_post_cqp_request(nesdev, cqp_request);
1357
1358 /* Wait for CQP */
1359 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1360 nesqp->hwqp.qp_id);
1361 ret = wait_event_timeout(cqp_request->waitq,
1362 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1363 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1364 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1365 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1366 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1367 cqp_request->major_code, cqp_request->minor_code);
1368 if ((!ret) || (cqp_request->major_code)) {
1369 nes_put_cqp_request(nesdev, cqp_request);
1370 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1371 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1372 kfree(nesqp->allocated_buffer);
1373 if (!ret) {
1374 return ERR_PTR(-ETIME);
1375 } else {
1376 return ERR_PTR(-EIO);
1377 }
1378 }
1379
1380 nes_put_cqp_request(nesdev, cqp_request);
1381
1382 if (ibpd->uobject) {
1383 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1384 uresp.actual_sq_size = sq_size;
1385 uresp.actual_rq_size = rq_size;
1386 uresp.qp_id = nesqp->hwqp.qp_id;
1387 uresp.nes_drv_opt = nes_drv_opt;
1388 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1389 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1390 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1391 kfree(nesqp->allocated_buffer);
1392 return ERR_PTR(-EFAULT);
1393 }
1394 }
1395
1396 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1397 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1398 spin_lock_init(&nesqp->lock);
1399 nes_add_ref(&nesqp->ibqp);
1400 break;
1401 default:
1402 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1403 return ERR_PTR(-EINVAL);
1404 }
1405
1406 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1407
1408 /* update the QP table */
1409 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1410 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1411 netdev_refcnt_read(nesvnic->netdev));
1412
1413 return &nesqp->ibqp;
1414 }
1415
1416
1417 /**
1418 * nes_clean_cq
1419 */
nes_clean_cq(struct nes_qp * nesqp,struct nes_cq * nescq)1420 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1421 {
1422 u32 cq_head;
1423 u32 lo;
1424 u32 hi;
1425 u64 u64temp;
1426 unsigned long flags = 0;
1427
1428 spin_lock_irqsave(&nescq->lock, flags);
1429
1430 cq_head = nescq->hw_cq.cq_head;
1431 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1432 rmb();
1433 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1434 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1435 u64temp = (((u64)hi) << 32) | ((u64)lo);
1436 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1437 if (u64temp == (u64)(unsigned long)nesqp) {
1438 /* Zero the context value so cqe will be ignored */
1439 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1440 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1441 }
1442
1443 if (++cq_head >= nescq->hw_cq.cq_size)
1444 cq_head = 0;
1445 }
1446
1447 spin_unlock_irqrestore(&nescq->lock, flags);
1448 }
1449
1450
1451 /**
1452 * nes_destroy_qp
1453 */
nes_destroy_qp(struct ib_qp * ibqp)1454 static int nes_destroy_qp(struct ib_qp *ibqp)
1455 {
1456 struct nes_qp *nesqp = to_nesqp(ibqp);
1457 struct nes_ucontext *nes_ucontext;
1458 struct ib_qp_attr attr;
1459 struct iw_cm_id *cm_id;
1460 struct iw_cm_event cm_event;
1461 int ret = 0;
1462
1463 atomic_inc(&sw_qps_destroyed);
1464 nesqp->destroyed = 1;
1465
1466 /* Blow away the connection if it exists. */
1467 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1468 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1469 attr.qp_state = IB_QPS_ERR;
1470 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1471 }
1472
1473 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1474 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1475 cm_id = nesqp->cm_id;
1476 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1477 cm_event.status = -ETIMEDOUT;
1478 cm_event.local_addr = cm_id->local_addr;
1479 cm_event.remote_addr = cm_id->remote_addr;
1480 cm_event.private_data = NULL;
1481 cm_event.private_data_len = 0;
1482
1483 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1484 "QP%u. cm_id = %p, refcount = %u. \n",
1485 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1486
1487 cm_id->rem_ref(cm_id);
1488 ret = cm_id->event_handler(cm_id, &cm_event);
1489 if (ret)
1490 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1491 }
1492
1493 if (nesqp->user_mode) {
1494 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1495 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1496 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1497 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1498 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1499 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1500 }
1501 }
1502 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1503 nesqp->sq_kmapped = 0;
1504 kunmap(nesqp->page);
1505 }
1506 } else {
1507 /* Clean any pending completions from the cq(s) */
1508 if (nesqp->nesscq)
1509 nes_clean_cq(nesqp, nesqp->nesscq);
1510
1511 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1512 nes_clean_cq(nesqp, nesqp->nesrcq);
1513 }
1514 nes_rem_ref(&nesqp->ibqp);
1515 return 0;
1516 }
1517
1518
1519 /**
1520 * nes_create_cq
1521 */
nes_create_cq(struct ib_device * ibdev,int entries,int comp_vector,struct ib_ucontext * context,struct ib_udata * udata)1522 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1523 int comp_vector,
1524 struct ib_ucontext *context, struct ib_udata *udata)
1525 {
1526 u64 u64temp;
1527 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1528 struct nes_device *nesdev = nesvnic->nesdev;
1529 struct nes_adapter *nesadapter = nesdev->nesadapter;
1530 struct nes_cq *nescq;
1531 struct nes_ucontext *nes_ucontext = NULL;
1532 struct nes_cqp_request *cqp_request;
1533 void *mem = NULL;
1534 struct nes_hw_cqp_wqe *cqp_wqe;
1535 struct nes_pbl *nespbl = NULL;
1536 struct nes_create_cq_req req;
1537 struct nes_create_cq_resp resp;
1538 u32 cq_num = 0;
1539 u32 opcode = 0;
1540 u32 pbl_entries = 1;
1541 int err;
1542 unsigned long flags;
1543 int ret;
1544
1545 if (entries > nesadapter->max_cqe)
1546 return ERR_PTR(-EINVAL);
1547
1548 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1549 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1550 if (err) {
1551 return ERR_PTR(err);
1552 }
1553
1554 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1555 if (!nescq) {
1556 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1557 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1558 return ERR_PTR(-ENOMEM);
1559 }
1560
1561 nescq->hw_cq.cq_size = max(entries + 1, 5);
1562 nescq->hw_cq.cq_number = cq_num;
1563 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1564
1565
1566 if (context) {
1567 nes_ucontext = to_nesucontext(context);
1568 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1569 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1570 kfree(nescq);
1571 return ERR_PTR(-EFAULT);
1572 }
1573 nesvnic->mcrq_ucontext = nes_ucontext;
1574 nes_ucontext->mcrqf = req.mcrqf;
1575 if (nes_ucontext->mcrqf) {
1576 if (nes_ucontext->mcrqf & 0x80000000)
1577 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1578 else if (nes_ucontext->mcrqf & 0x40000000)
1579 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1580 else
1581 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1582 nescq->mcrqf = nes_ucontext->mcrqf;
1583 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1584 }
1585 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1586 (unsigned long)req.user_cq_buffer, entries);
1587 err = 1;
1588 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1589 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1590 list_del(&nespbl->list);
1591 err = 0;
1592 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1593 nespbl);
1594 break;
1595 }
1596 }
1597 if (err) {
1598 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1599 kfree(nescq);
1600 return ERR_PTR(-EFAULT);
1601 }
1602
1603 pbl_entries = nespbl->pbl_size >> 3;
1604 nescq->cq_mem_size = 0;
1605 } else {
1606 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1607 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1608 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1609
1610 /* allocate the physical buffer space */
1611 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1612 &nescq->hw_cq.cq_pbase);
1613 if (!mem) {
1614 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1615 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1616 kfree(nescq);
1617 return ERR_PTR(-ENOMEM);
1618 }
1619
1620 memset(mem, 0, nescq->cq_mem_size);
1621 nescq->hw_cq.cq_vbase = mem;
1622 nescq->hw_cq.cq_head = 0;
1623 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1624 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1625 (u32)nescq->hw_cq.cq_pbase);
1626 }
1627
1628 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1629 spin_lock_init(&nescq->lock);
1630
1631 /* send CreateCQ request to CQP */
1632 cqp_request = nes_get_cqp_request(nesdev);
1633 if (cqp_request == NULL) {
1634 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1635 if (!context)
1636 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1637 nescq->hw_cq.cq_pbase);
1638 else {
1639 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1640 nespbl->pbl_vbase, nespbl->pbl_pbase);
1641 kfree(nespbl);
1642 }
1643
1644 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1645 kfree(nescq);
1646 return ERR_PTR(-ENOMEM);
1647 }
1648 cqp_request->waiting = 1;
1649 cqp_wqe = &cqp_request->cqp_wqe;
1650
1651 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1652 NES_CQP_CQ_CHK_OVERFLOW |
1653 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1654
1655 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1656
1657 if (pbl_entries != 1) {
1658 if (pbl_entries > 32) {
1659 /* use 4k pbl */
1660 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1661 if (nesadapter->free_4kpbl == 0) {
1662 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1663 nes_free_cqp_request(nesdev, cqp_request);
1664 if (!context)
1665 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1666 nescq->hw_cq.cq_pbase);
1667 else {
1668 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1669 nespbl->pbl_vbase, nespbl->pbl_pbase);
1670 kfree(nespbl);
1671 }
1672 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1673 kfree(nescq);
1674 return ERR_PTR(-ENOMEM);
1675 } else {
1676 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1677 nescq->virtual_cq = 2;
1678 nesadapter->free_4kpbl--;
1679 }
1680 } else {
1681 /* use 256 byte pbl */
1682 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1683 if (nesadapter->free_256pbl == 0) {
1684 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1685 nes_free_cqp_request(nesdev, cqp_request);
1686 if (!context)
1687 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1688 nescq->hw_cq.cq_pbase);
1689 else {
1690 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1691 nespbl->pbl_vbase, nespbl->pbl_pbase);
1692 kfree(nespbl);
1693 }
1694 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1695 kfree(nescq);
1696 return ERR_PTR(-ENOMEM);
1697 } else {
1698 opcode |= NES_CQP_CQ_VIRT;
1699 nescq->virtual_cq = 1;
1700 nesadapter->free_256pbl--;
1701 }
1702 }
1703 }
1704
1705 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1706
1707 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1708 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1709 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1710 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1711
1712 if (context) {
1713 if (pbl_entries != 1)
1714 u64temp = (u64)nespbl->pbl_pbase;
1715 else
1716 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1717 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1718 nes_ucontext->mmap_db_index[0]);
1719 } else {
1720 u64temp = (u64)nescq->hw_cq.cq_pbase;
1721 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1722 }
1723 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1724 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1725 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1726 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1727 cpu_to_le32((u32)(u64temp >> 1));
1728 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1729 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1730
1731 atomic_set(&cqp_request->refcount, 2);
1732 nes_post_cqp_request(nesdev, cqp_request);
1733
1734 /* Wait for CQP */
1735 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1736 nescq->hw_cq.cq_number);
1737 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1738 NES_EVENT_TIMEOUT * 2);
1739 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1740 nescq->hw_cq.cq_number, ret);
1741 if ((!ret) || (cqp_request->major_code)) {
1742 nes_put_cqp_request(nesdev, cqp_request);
1743 if (!context)
1744 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1745 nescq->hw_cq.cq_pbase);
1746 else {
1747 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1748 nespbl->pbl_vbase, nespbl->pbl_pbase);
1749 kfree(nespbl);
1750 }
1751 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1752 kfree(nescq);
1753 return ERR_PTR(-EIO);
1754 }
1755 nes_put_cqp_request(nesdev, cqp_request);
1756
1757 if (context) {
1758 /* free the nespbl */
1759 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1760 nespbl->pbl_pbase);
1761 kfree(nespbl);
1762 resp.cq_id = nescq->hw_cq.cq_number;
1763 resp.cq_size = nescq->hw_cq.cq_size;
1764 resp.mmap_db_index = 0;
1765 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1766 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1767 kfree(nescq);
1768 return ERR_PTR(-EFAULT);
1769 }
1770 }
1771
1772 return &nescq->ibcq;
1773 }
1774
1775
1776 /**
1777 * nes_destroy_cq
1778 */
nes_destroy_cq(struct ib_cq * ib_cq)1779 static int nes_destroy_cq(struct ib_cq *ib_cq)
1780 {
1781 struct nes_cq *nescq;
1782 struct nes_device *nesdev;
1783 struct nes_vnic *nesvnic;
1784 struct nes_adapter *nesadapter;
1785 struct nes_hw_cqp_wqe *cqp_wqe;
1786 struct nes_cqp_request *cqp_request;
1787 unsigned long flags;
1788 u32 opcode = 0;
1789 int ret;
1790
1791 if (ib_cq == NULL)
1792 return 0;
1793
1794 nescq = to_nescq(ib_cq);
1795 nesvnic = to_nesvnic(ib_cq->device);
1796 nesdev = nesvnic->nesdev;
1797 nesadapter = nesdev->nesadapter;
1798
1799 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1800
1801 /* Send DestroyCQ request to CQP */
1802 cqp_request = nes_get_cqp_request(nesdev);
1803 if (cqp_request == NULL) {
1804 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1805 return -ENOMEM;
1806 }
1807 cqp_request->waiting = 1;
1808 cqp_wqe = &cqp_request->cqp_wqe;
1809 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1810 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1811 if (nescq->virtual_cq == 1) {
1812 nesadapter->free_256pbl++;
1813 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1814 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1815 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1816 }
1817 } else if (nescq->virtual_cq == 2) {
1818 nesadapter->free_4kpbl++;
1819 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1820 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1821 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1822 }
1823 opcode |= NES_CQP_CQ_4KB_CHUNK;
1824 }
1825
1826 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1827
1828 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1829 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1830 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1831 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1832 if (!nescq->mcrqf)
1833 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1834
1835 atomic_set(&cqp_request->refcount, 2);
1836 nes_post_cqp_request(nesdev, cqp_request);
1837
1838 /* Wait for CQP */
1839 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1840 nescq->hw_cq.cq_number);
1841 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1842 NES_EVENT_TIMEOUT);
1843 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1844 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1845 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1846 cqp_request->minor_code);
1847 if (!ret) {
1848 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1849 nescq->hw_cq.cq_number);
1850 ret = -ETIME;
1851 } else if (cqp_request->major_code) {
1852 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1853 nescq->hw_cq.cq_number);
1854 ret = -EIO;
1855 } else {
1856 ret = 0;
1857 }
1858 nes_put_cqp_request(nesdev, cqp_request);
1859
1860 if (nescq->cq_mem_size)
1861 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1862 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1863 kfree(nescq);
1864
1865 return ret;
1866 }
1867
1868 /**
1869 * root_256
1870 */
root_256(struct nes_device * nesdev,struct nes_root_vpbl * root_vpbl,struct nes_root_vpbl * new_root,u16 pbl_count_4k)1871 static u32 root_256(struct nes_device *nesdev,
1872 struct nes_root_vpbl *root_vpbl,
1873 struct nes_root_vpbl *new_root,
1874 u16 pbl_count_4k)
1875 {
1876 u64 leaf_pbl;
1877 int i, j, k;
1878
1879 if (pbl_count_4k == 1) {
1880 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1881 512, &new_root->pbl_pbase);
1882
1883 if (new_root->pbl_vbase == NULL)
1884 return 0;
1885
1886 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1887 for (i = 0; i < 16; i++) {
1888 new_root->pbl_vbase[i].pa_low =
1889 cpu_to_le32((u32)leaf_pbl);
1890 new_root->pbl_vbase[i].pa_high =
1891 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1892 leaf_pbl += 256;
1893 }
1894 } else {
1895 for (i = 3; i >= 0; i--) {
1896 j = i * 16;
1897 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1898 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1899 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1900 << 32);
1901 for (k = 1; k < 16; k++) {
1902 leaf_pbl += 256;
1903 root_vpbl->pbl_vbase[j + k].pa_low =
1904 cpu_to_le32((u32)leaf_pbl);
1905 root_vpbl->pbl_vbase[j + k].pa_high =
1906 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1907 }
1908 }
1909 }
1910
1911 return 1;
1912 }
1913
1914
1915 /**
1916 * nes_reg_mr
1917 */
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)1918 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1919 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1920 dma_addr_t single_buffer, u16 pbl_count_4k,
1921 u16 residual_page_count_4k, int acc, u64 *iova_start,
1922 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1923 {
1924 struct nes_hw_cqp_wqe *cqp_wqe;
1925 struct nes_cqp_request *cqp_request;
1926 unsigned long flags;
1927 int ret;
1928 struct nes_adapter *nesadapter = nesdev->nesadapter;
1929 uint pg_cnt = 0;
1930 u16 pbl_count_256 = 0;
1931 u16 pbl_count = 0;
1932 u8 use_256_pbls = 0;
1933 u8 use_4k_pbls = 0;
1934 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1935 struct nes_root_vpbl new_root = { 0, NULL, NULL };
1936 u32 opcode = 0;
1937 u16 major_code;
1938
1939 /* Register the region with the adapter */
1940 cqp_request = nes_get_cqp_request(nesdev);
1941 if (cqp_request == NULL) {
1942 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1943 return -ENOMEM;
1944 }
1945 cqp_request->waiting = 1;
1946 cqp_wqe = &cqp_request->cqp_wqe;
1947
1948 if (pbl_count_4k) {
1949 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1950
1951 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1952 pbl_count_256 = (pg_cnt + 31) / 32;
1953 if (pg_cnt <= 32) {
1954 if (pbl_count_256 <= nesadapter->free_256pbl)
1955 use_256_pbls = 1;
1956 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1957 use_4k_pbls = 1;
1958 } else if (pg_cnt <= 2048) {
1959 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1960 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1961 use_4k_pbls = 1;
1962 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1963 use_256_pbls = 1;
1964 use_two_level = 1;
1965 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1966 use_4k_pbls = 1;
1967 }
1968 } else {
1969 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1970 use_4k_pbls = 1;
1971 }
1972
1973 if (use_256_pbls) {
1974 pbl_count = pbl_count_256;
1975 nesadapter->free_256pbl -= pbl_count + use_two_level;
1976 } else if (use_4k_pbls) {
1977 pbl_count = pbl_count_4k;
1978 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1979 } else {
1980 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1981 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1982 nes_free_cqp_request(nesdev, cqp_request);
1983 return -ENOMEM;
1984 }
1985
1986 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1987 }
1988
1989 if (use_256_pbls && use_two_level) {
1990 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1991 if (new_root.pbl_pbase != 0)
1992 root_vpbl = &new_root;
1993 } else {
1994 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1995 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1996 use_256_pbls = 0;
1997
1998 if (pbl_count_4k == 1)
1999 use_two_level = 0;
2000 pbl_count = pbl_count_4k;
2001
2002 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2003 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2004 use_4k_pbls = 1;
2005 }
2006 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2007
2008 if (use_4k_pbls == 0)
2009 return -ENOMEM;
2010 }
2011 }
2012
2013 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2014 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2015 if (acc & IB_ACCESS_LOCAL_WRITE)
2016 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2017 if (acc & IB_ACCESS_REMOTE_WRITE)
2018 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2019 if (acc & IB_ACCESS_REMOTE_READ)
2020 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2021 if (acc & IB_ACCESS_MW_BIND)
2022 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2023
2024 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2025 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2026 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2027 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2028
2029 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2030 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2031 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2032 cpu_to_le32(nespd->pd_id & 0x00007fff);
2033 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2034
2035 if (pbl_count == 0) {
2036 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2037 } else {
2038 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2039 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2040 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2041
2042 if (use_4k_pbls)
2043 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2044 }
2045 barrier();
2046
2047 atomic_set(&cqp_request->refcount, 2);
2048 nes_post_cqp_request(nesdev, cqp_request);
2049
2050 /* Wait for CQP */
2051 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2052 NES_EVENT_TIMEOUT);
2053 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2054 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2055 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2056 major_code = cqp_request->major_code;
2057 nes_put_cqp_request(nesdev, cqp_request);
2058
2059 if ((!ret || major_code) && pbl_count != 0) {
2060 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2061 if (use_256_pbls)
2062 nesadapter->free_256pbl += pbl_count + use_two_level;
2063 else if (use_4k_pbls)
2064 nesadapter->free_4kpbl += pbl_count + use_two_level;
2065 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2066 }
2067 if (new_root.pbl_pbase)
2068 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2069 new_root.pbl_pbase);
2070
2071 if (!ret)
2072 return -ETIME;
2073 else if (major_code)
2074 return -EIO;
2075
2076 *actual_pbl_cnt = pbl_count + use_two_level;
2077 *used_4k_pbls = use_4k_pbls;
2078 return 0;
2079 }
2080
2081
2082 /**
2083 * nes_reg_phys_mr
2084 */
nes_reg_phys_mr(struct ib_pd * ib_pd,struct ib_phys_buf * buffer_list,int num_phys_buf,int acc,u64 * iova_start)2085 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2086 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2087 u64 * iova_start)
2088 {
2089 u64 region_length;
2090 struct nes_pd *nespd = to_nespd(ib_pd);
2091 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2092 struct nes_device *nesdev = nesvnic->nesdev;
2093 struct nes_adapter *nesadapter = nesdev->nesadapter;
2094 struct nes_mr *nesmr;
2095 struct ib_mr *ibmr;
2096 struct nes_vpbl vpbl;
2097 struct nes_root_vpbl root_vpbl;
2098 u32 stag;
2099 u32 i;
2100 unsigned long mask;
2101 u32 stag_index = 0;
2102 u32 next_stag_index = 0;
2103 u32 driver_key = 0;
2104 u32 root_pbl_index = 0;
2105 u32 cur_pbl_index = 0;
2106 int err = 0;
2107 int ret = 0;
2108 u16 pbl_count = 0;
2109 u8 single_page = 1;
2110 u8 stag_key = 0;
2111
2112 region_length = 0;
2113 vpbl.pbl_vbase = NULL;
2114 root_vpbl.pbl_vbase = NULL;
2115 root_vpbl.pbl_pbase = 0;
2116
2117 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2118 stag_key = (u8)next_stag_index;
2119
2120 driver_key = 0;
2121
2122 next_stag_index >>= 8;
2123 next_stag_index %= nesadapter->max_mr;
2124 if (num_phys_buf > (1024*512)) {
2125 return ERR_PTR(-E2BIG);
2126 }
2127
2128 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2129 return ERR_PTR(-EINVAL);
2130
2131 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2132 &stag_index, &next_stag_index);
2133 if (err) {
2134 return ERR_PTR(err);
2135 }
2136
2137 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2138 if (!nesmr) {
2139 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2140 return ERR_PTR(-ENOMEM);
2141 }
2142
2143 for (i = 0; i < num_phys_buf; i++) {
2144
2145 if ((i & 0x01FF) == 0) {
2146 if (root_pbl_index == 1) {
2147 /* Allocate the root PBL */
2148 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2149 &root_vpbl.pbl_pbase);
2150 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2151 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2152 if (!root_vpbl.pbl_vbase) {
2153 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2154 vpbl.pbl_pbase);
2155 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2156 kfree(nesmr);
2157 return ERR_PTR(-ENOMEM);
2158 }
2159 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2160 if (!root_vpbl.leaf_vpbl) {
2161 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2162 root_vpbl.pbl_pbase);
2163 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2164 vpbl.pbl_pbase);
2165 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2166 kfree(nesmr);
2167 return ERR_PTR(-ENOMEM);
2168 }
2169 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2170 root_vpbl.pbl_vbase[0].pa_high =
2171 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2172 root_vpbl.leaf_vpbl[0] = vpbl;
2173 }
2174 /* Allocate a 4K buffer for the PBL */
2175 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2176 &vpbl.pbl_pbase);
2177 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2178 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2179 if (!vpbl.pbl_vbase) {
2180 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2181 ibmr = ERR_PTR(-ENOMEM);
2182 kfree(nesmr);
2183 goto reg_phys_err;
2184 }
2185 /* Fill in the root table */
2186 if (1 <= root_pbl_index) {
2187 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2188 cpu_to_le32((u32)vpbl.pbl_pbase);
2189 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2190 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2191 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2192 }
2193 root_pbl_index++;
2194 cur_pbl_index = 0;
2195 }
2196
2197 mask = !buffer_list[i].size;
2198 if (i != 0)
2199 mask |= buffer_list[i].addr;
2200 if (i != num_phys_buf - 1)
2201 mask |= buffer_list[i].addr + buffer_list[i].size;
2202
2203 if (mask & ~PAGE_MASK) {
2204 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2205 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2206 ibmr = ERR_PTR(-EINVAL);
2207 kfree(nesmr);
2208 goto reg_phys_err;
2209 }
2210
2211 region_length += buffer_list[i].size;
2212 if ((i != 0) && (single_page)) {
2213 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2214 single_page = 0;
2215 }
2216 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2217 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2218 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2219 }
2220
2221 stag = stag_index << 8;
2222 stag |= driver_key;
2223 stag += (u32)stag_key;
2224
2225 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2226 " length = 0x%016lX, index = 0x%08X\n",
2227 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2228
2229 /* Make the leaf PBL the root if only one PBL */
2230 if (root_pbl_index == 1) {
2231 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2232 }
2233
2234 if (single_page) {
2235 pbl_count = 0;
2236 } else {
2237 pbl_count = root_pbl_index;
2238 }
2239 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2240 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2241 &nesmr->pbls_used, &nesmr->pbl_4k);
2242
2243 if (ret == 0) {
2244 nesmr->ibmr.rkey = stag;
2245 nesmr->ibmr.lkey = stag;
2246 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2247 ibmr = &nesmr->ibmr;
2248 } else {
2249 kfree(nesmr);
2250 ibmr = ERR_PTR(-ENOMEM);
2251 }
2252
2253 reg_phys_err:
2254 /* free the resources */
2255 if (root_pbl_index == 1) {
2256 /* single PBL case */
2257 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2258 } else {
2259 for (i=0; i<root_pbl_index; i++) {
2260 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2261 root_vpbl.leaf_vpbl[i].pbl_pbase);
2262 }
2263 kfree(root_vpbl.leaf_vpbl);
2264 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2265 root_vpbl.pbl_pbase);
2266 }
2267
2268 return ibmr;
2269 }
2270
2271
2272 /**
2273 * nes_get_dma_mr
2274 */
nes_get_dma_mr(struct ib_pd * pd,int acc)2275 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2276 {
2277 struct ib_phys_buf bl;
2278 u64 kva = 0;
2279
2280 nes_debug(NES_DBG_MR, "\n");
2281
2282 bl.size = (u64)0xffffffffffULL;
2283 bl.addr = 0;
2284 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2285 }
2286
2287
2288 /**
2289 * nes_reg_user_mr
2290 */
nes_reg_user_mr(struct ib_pd * pd,u64 start,u64 length,u64 virt,int acc,struct ib_udata * udata)2291 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2292 u64 virt, int acc, struct ib_udata *udata)
2293 {
2294 u64 iova_start;
2295 __le64 *pbl;
2296 u64 region_length;
2297 dma_addr_t last_dma_addr = 0;
2298 dma_addr_t first_dma_addr = 0;
2299 struct nes_pd *nespd = to_nespd(pd);
2300 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2301 struct nes_device *nesdev = nesvnic->nesdev;
2302 struct nes_adapter *nesadapter = nesdev->nesadapter;
2303 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2304 struct ib_umem_chunk *chunk;
2305 struct nes_ucontext *nes_ucontext;
2306 struct nes_pbl *nespbl;
2307 struct nes_mr *nesmr;
2308 struct ib_umem *region;
2309 struct nes_mem_reg_req req;
2310 struct nes_vpbl vpbl;
2311 struct nes_root_vpbl root_vpbl;
2312 int nmap_index, page_index;
2313 int page_count = 0;
2314 int err, pbl_depth = 0;
2315 int chunk_pages;
2316 int ret;
2317 u32 stag;
2318 u32 stag_index = 0;
2319 u32 next_stag_index;
2320 u32 driver_key;
2321 u32 root_pbl_index = 0;
2322 u32 cur_pbl_index = 0;
2323 u32 skip_pages;
2324 u16 pbl_count;
2325 u8 single_page = 1;
2326 u8 stag_key;
2327
2328 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2329 if (IS_ERR(region)) {
2330 return (struct ib_mr *)region;
2331 }
2332
2333 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2334 " offset = %u, page size = %u.\n",
2335 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2336 region->offset, region->page_size);
2337
2338 skip_pages = ((u32)region->offset) >> 12;
2339
2340 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2341 ib_umem_release(region);
2342 return ERR_PTR(-EFAULT);
2343 }
2344 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2345
2346 switch (req.reg_type) {
2347 case IWNES_MEMREG_TYPE_MEM:
2348 pbl_depth = 0;
2349 region_length = 0;
2350 vpbl.pbl_vbase = NULL;
2351 root_vpbl.pbl_vbase = NULL;
2352 root_vpbl.pbl_pbase = 0;
2353
2354 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2355 stag_key = (u8)next_stag_index;
2356
2357 driver_key = next_stag_index & 0x70000000;
2358
2359 next_stag_index >>= 8;
2360 next_stag_index %= nesadapter->max_mr;
2361
2362 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2363 nesadapter->max_mr, &stag_index, &next_stag_index);
2364 if (err) {
2365 ib_umem_release(region);
2366 return ERR_PTR(err);
2367 }
2368
2369 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2370 if (!nesmr) {
2371 ib_umem_release(region);
2372 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2373 return ERR_PTR(-ENOMEM);
2374 }
2375 nesmr->region = region;
2376
2377 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2378 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2379 chunk->nents, chunk->nmap);
2380 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2381 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2382 ib_umem_release(region);
2383 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2384 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2385 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2386 ibmr = ERR_PTR(-EINVAL);
2387 kfree(nesmr);
2388 goto reg_user_mr_err;
2389 }
2390
2391 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2392 ib_umem_release(region);
2393 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2394 stag_index);
2395 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2396 ibmr = ERR_PTR(-EINVAL);
2397 kfree(nesmr);
2398 goto reg_user_mr_err;
2399 }
2400
2401 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2402 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2403 region_length -= skip_pages << 12;
2404 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2405 skip_pages = 0;
2406 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2407 goto enough_pages;
2408 if ((page_count&0x01FF) == 0) {
2409 if (page_count >= 1024 * 512) {
2410 ib_umem_release(region);
2411 nes_free_resource(nesadapter,
2412 nesadapter->allocated_mrs, stag_index);
2413 kfree(nesmr);
2414 ibmr = ERR_PTR(-E2BIG);
2415 goto reg_user_mr_err;
2416 }
2417 if (root_pbl_index == 1) {
2418 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2419 8192, &root_vpbl.pbl_pbase);
2420 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2421 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2422 if (!root_vpbl.pbl_vbase) {
2423 ib_umem_release(region);
2424 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2425 vpbl.pbl_pbase);
2426 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2427 stag_index);
2428 kfree(nesmr);
2429 ibmr = ERR_PTR(-ENOMEM);
2430 goto reg_user_mr_err;
2431 }
2432 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2433 GFP_KERNEL);
2434 if (!root_vpbl.leaf_vpbl) {
2435 ib_umem_release(region);
2436 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2437 root_vpbl.pbl_pbase);
2438 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2439 vpbl.pbl_pbase);
2440 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2441 stag_index);
2442 kfree(nesmr);
2443 ibmr = ERR_PTR(-ENOMEM);
2444 goto reg_user_mr_err;
2445 }
2446 root_vpbl.pbl_vbase[0].pa_low =
2447 cpu_to_le32((u32)vpbl.pbl_pbase);
2448 root_vpbl.pbl_vbase[0].pa_high =
2449 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2450 root_vpbl.leaf_vpbl[0] = vpbl;
2451 }
2452 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2453 &vpbl.pbl_pbase);
2454 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2455 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2456 if (!vpbl.pbl_vbase) {
2457 ib_umem_release(region);
2458 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2459 ibmr = ERR_PTR(-ENOMEM);
2460 kfree(nesmr);
2461 goto reg_user_mr_err;
2462 }
2463 if (1 <= root_pbl_index) {
2464 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2465 cpu_to_le32((u32)vpbl.pbl_pbase);
2466 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2467 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2468 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2469 }
2470 root_pbl_index++;
2471 cur_pbl_index = 0;
2472 }
2473 if (single_page) {
2474 if (page_count != 0) {
2475 if ((last_dma_addr+4096) !=
2476 (sg_dma_address(&chunk->page_list[nmap_index])+
2477 (page_index*4096)))
2478 single_page = 0;
2479 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2480 (page_index*4096);
2481 } else {
2482 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2483 (page_index*4096);
2484 last_dma_addr = first_dma_addr;
2485 }
2486 }
2487
2488 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2489 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2490 (page_index*4096)));
2491 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2492 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2493 (page_index*4096))) >> 32)));
2494 cur_pbl_index++;
2495 page_count++;
2496 }
2497 }
2498 }
2499 enough_pages:
2500 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2501 " stag_key=0x%08x\n",
2502 stag_index, driver_key, stag_key);
2503 stag = stag_index << 8;
2504 stag |= driver_key;
2505 stag += (u32)stag_key;
2506
2507 iova_start = virt;
2508 /* Make the leaf PBL the root if only one PBL */
2509 if (root_pbl_index == 1) {
2510 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2511 }
2512
2513 if (single_page) {
2514 pbl_count = 0;
2515 } else {
2516 pbl_count = root_pbl_index;
2517 first_dma_addr = 0;
2518 }
2519 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2520 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2521 stag, (unsigned int)iova_start,
2522 (unsigned int)region_length, stag_index,
2523 (unsigned long long)region->length, pbl_count);
2524 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2525 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2526 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2527
2528 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2529
2530 if (ret == 0) {
2531 nesmr->ibmr.rkey = stag;
2532 nesmr->ibmr.lkey = stag;
2533 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2534 ibmr = &nesmr->ibmr;
2535 } else {
2536 ib_umem_release(region);
2537 kfree(nesmr);
2538 ibmr = ERR_PTR(-ENOMEM);
2539 }
2540
2541 reg_user_mr_err:
2542 /* free the resources */
2543 if (root_pbl_index == 1) {
2544 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2545 vpbl.pbl_pbase);
2546 } else {
2547 for (page_index=0; page_index<root_pbl_index; page_index++) {
2548 pci_free_consistent(nesdev->pcidev, 4096,
2549 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2550 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2551 }
2552 kfree(root_vpbl.leaf_vpbl);
2553 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2554 root_vpbl.pbl_pbase);
2555 }
2556
2557 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2558
2559 return ibmr;
2560 case IWNES_MEMREG_TYPE_QP:
2561 case IWNES_MEMREG_TYPE_CQ:
2562 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2563 if (!nespbl) {
2564 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2565 ib_umem_release(region);
2566 return ERR_PTR(-ENOMEM);
2567 }
2568 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2569 if (!nesmr) {
2570 ib_umem_release(region);
2571 kfree(nespbl);
2572 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2573 return ERR_PTR(-ENOMEM);
2574 }
2575 nesmr->region = region;
2576 nes_ucontext = to_nesucontext(pd->uobject->context);
2577 pbl_depth = region->length >> 12;
2578 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2579 nespbl->pbl_size = pbl_depth*sizeof(u64);
2580 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2581 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2582 } else {
2583 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2584 }
2585
2586 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2587 nespbl->pbl_size, pbl_depth);
2588 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2589 &nespbl->pbl_pbase);
2590 if (!pbl) {
2591 ib_umem_release(region);
2592 kfree(nesmr);
2593 kfree(nespbl);
2594 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2595 return ERR_PTR(-ENOMEM);
2596 }
2597
2598 nespbl->pbl_vbase = (u64 *)pbl;
2599 nespbl->user_base = start;
2600 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2601 " pbl_vbase=%p user_base=0x%lx\n",
2602 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2603 (void *) nespbl->pbl_vbase, nespbl->user_base);
2604
2605 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2606 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2607 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2608 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2609 nespbl->page = sg_page(&chunk->page_list[0]);
2610 for (page_index=0; page_index<chunk_pages; page_index++) {
2611 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2612 (sg_dma_address(&chunk->page_list[nmap_index])+
2613 (page_index*4096)));
2614 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2615 (sg_dma_address(&chunk->page_list[nmap_index])+
2616 (page_index*4096)))>>32);
2617 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2618 (unsigned long long)*pbl,
2619 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2620 pbl++;
2621 }
2622 }
2623 }
2624 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2625 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2626 } else {
2627 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2628 }
2629 nesmr->ibmr.rkey = -1;
2630 nesmr->ibmr.lkey = -1;
2631 nesmr->mode = req.reg_type;
2632 return &nesmr->ibmr;
2633 }
2634
2635 ib_umem_release(region);
2636 return ERR_PTR(-ENOSYS);
2637 }
2638
2639
2640 /**
2641 * nes_dereg_mr
2642 */
nes_dereg_mr(struct ib_mr * ib_mr)2643 static int nes_dereg_mr(struct ib_mr *ib_mr)
2644 {
2645 struct nes_mr *nesmr = to_nesmr(ib_mr);
2646 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2647 struct nes_device *nesdev = nesvnic->nesdev;
2648 struct nes_adapter *nesadapter = nesdev->nesadapter;
2649 struct nes_hw_cqp_wqe *cqp_wqe;
2650 struct nes_cqp_request *cqp_request;
2651 unsigned long flags;
2652 int ret;
2653 u16 major_code;
2654 u16 minor_code;
2655
2656 if (nesmr->region) {
2657 ib_umem_release(nesmr->region);
2658 }
2659 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2660 kfree(nesmr);
2661 return 0;
2662 }
2663
2664 /* Deallocate the region with the adapter */
2665
2666 cqp_request = nes_get_cqp_request(nesdev);
2667 if (cqp_request == NULL) {
2668 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2669 return -ENOMEM;
2670 }
2671 cqp_request->waiting = 1;
2672 cqp_wqe = &cqp_request->cqp_wqe;
2673
2674 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2675 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2676 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2677 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2678 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2679
2680 atomic_set(&cqp_request->refcount, 2);
2681 nes_post_cqp_request(nesdev, cqp_request);
2682
2683 /* Wait for CQP */
2684 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2685 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2686 NES_EVENT_TIMEOUT);
2687 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2688 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2689 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2690
2691 major_code = cqp_request->major_code;
2692 minor_code = cqp_request->minor_code;
2693
2694 nes_put_cqp_request(nesdev, cqp_request);
2695
2696 if (!ret) {
2697 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2698 " ib_mr=%p, rkey = 0x%08X\n",
2699 ib_mr, ib_mr->rkey);
2700 return -ETIME;
2701 } else if (major_code) {
2702 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2703 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2704 major_code, minor_code, ib_mr, ib_mr->rkey);
2705 return -EIO;
2706 }
2707
2708 if (nesmr->pbls_used != 0) {
2709 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2710 if (nesmr->pbl_4k) {
2711 nesadapter->free_4kpbl += nesmr->pbls_used;
2712 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2713 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2714 "exceeded the max(%u)\n",
2715 nesadapter->free_4kpbl,
2716 nesadapter->max_4kpbl);
2717 } else {
2718 nesadapter->free_256pbl += nesmr->pbls_used;
2719 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2720 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2721 "exceeded the max(%u)\n",
2722 nesadapter->free_256pbl,
2723 nesadapter->max_256pbl);
2724 }
2725 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2726 }
2727 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2728 (ib_mr->rkey & 0x0fffff00) >> 8);
2729
2730 kfree(nesmr);
2731
2732 return 0;
2733 }
2734
2735
2736 /**
2737 * show_rev
2738 */
show_rev(struct device * dev,struct device_attribute * attr,char * buf)2739 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2740 char *buf)
2741 {
2742 struct nes_ib_device *nesibdev =
2743 container_of(dev, struct nes_ib_device, ibdev.dev);
2744 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2745
2746 nes_debug(NES_DBG_INIT, "\n");
2747 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2748 }
2749
2750
2751 /**
2752 * show_fw_ver
2753 */
show_fw_ver(struct device * dev,struct device_attribute * attr,char * buf)2754 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2755 char *buf)
2756 {
2757 struct nes_ib_device *nesibdev =
2758 container_of(dev, struct nes_ib_device, ibdev.dev);
2759 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2760
2761 nes_debug(NES_DBG_INIT, "\n");
2762 return sprintf(buf, "%u.%u\n",
2763 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2764 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2765 }
2766
2767
2768 /**
2769 * show_hca
2770 */
show_hca(struct device * dev,struct device_attribute * attr,char * buf)2771 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2772 char *buf)
2773 {
2774 nes_debug(NES_DBG_INIT, "\n");
2775 return sprintf(buf, "NES020\n");
2776 }
2777
2778
2779 /**
2780 * show_board
2781 */
show_board(struct device * dev,struct device_attribute * attr,char * buf)2782 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2783 char *buf)
2784 {
2785 nes_debug(NES_DBG_INIT, "\n");
2786 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2787 }
2788
2789
2790 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2791 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2792 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2793 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2794
2795 static struct device_attribute *nes_dev_attributes[] = {
2796 &dev_attr_hw_rev,
2797 &dev_attr_fw_ver,
2798 &dev_attr_hca_type,
2799 &dev_attr_board_id
2800 };
2801
2802
2803 /**
2804 * nes_query_qp
2805 */
nes_query_qp(struct ib_qp * ibqp,struct ib_qp_attr * attr,int attr_mask,struct ib_qp_init_attr * init_attr)2806 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2807 int attr_mask, struct ib_qp_init_attr *init_attr)
2808 {
2809 struct nes_qp *nesqp = to_nesqp(ibqp);
2810
2811 nes_debug(NES_DBG_QP, "\n");
2812
2813 attr->qp_access_flags = 0;
2814 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2815 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2816 attr->cap.max_recv_sge = 1;
2817 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2818 attr->cap.max_inline_data = 0;
2819 else
2820 attr->cap.max_inline_data = 64;
2821
2822 init_attr->event_handler = nesqp->ibqp.event_handler;
2823 init_attr->qp_context = nesqp->ibqp.qp_context;
2824 init_attr->send_cq = nesqp->ibqp.send_cq;
2825 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2826 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2827 init_attr->cap = attr->cap;
2828
2829 return 0;
2830 }
2831
2832
2833 /**
2834 * nes_hw_modify_qp
2835 */
nes_hw_modify_qp(struct nes_device * nesdev,struct nes_qp * nesqp,u32 next_iwarp_state,u32 termlen,u32 wait_completion)2836 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2837 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2838 {
2839 struct nes_hw_cqp_wqe *cqp_wqe;
2840 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2841 /* struct iw_cm_event cm_event; */
2842 struct nes_cqp_request *cqp_request;
2843 int ret;
2844 u16 major_code;
2845
2846 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2847 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2848
2849 cqp_request = nes_get_cqp_request(nesdev);
2850 if (cqp_request == NULL) {
2851 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2852 return -ENOMEM;
2853 }
2854 if (wait_completion) {
2855 cqp_request->waiting = 1;
2856 } else {
2857 cqp_request->waiting = 0;
2858 }
2859 cqp_wqe = &cqp_request->cqp_wqe;
2860
2861 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2862 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2863 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2864 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2865 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2866 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2867 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2868
2869 /* If sending a terminate message, fill in the length (in words) */
2870 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2871 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2872 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2873 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2874 }
2875
2876 atomic_set(&cqp_request->refcount, 2);
2877 nes_post_cqp_request(nesdev, cqp_request);
2878
2879 /* Wait for CQP */
2880 if (wait_completion) {
2881 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2882 nesqp->hwqp.qp_id); */
2883 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2884 NES_EVENT_TIMEOUT);
2885 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2886 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2887 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2888 major_code = cqp_request->major_code;
2889 if (major_code) {
2890 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2891 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2892 nesqp->hwqp.qp_id, cqp_request->major_code,
2893 cqp_request->minor_code, next_iwarp_state);
2894 }
2895
2896 nes_put_cqp_request(nesdev, cqp_request);
2897
2898 if (!ret)
2899 return -ETIME;
2900 else if (major_code)
2901 return -EIO;
2902 else
2903 return 0;
2904 } else {
2905 return 0;
2906 }
2907 }
2908
2909
2910 /**
2911 * nes_modify_qp
2912 */
nes_modify_qp(struct ib_qp * ibqp,struct ib_qp_attr * attr,int attr_mask,struct ib_udata * udata)2913 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2914 int attr_mask, struct ib_udata *udata)
2915 {
2916 struct nes_qp *nesqp = to_nesqp(ibqp);
2917 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2918 struct nes_device *nesdev = nesvnic->nesdev;
2919 /* u32 cqp_head; */
2920 /* u32 counter; */
2921 u32 next_iwarp_state = 0;
2922 int err;
2923 unsigned long qplockflags;
2924 int ret;
2925 u16 original_last_aeq;
2926 u8 issue_modify_qp = 0;
2927 u8 dont_wait = 0;
2928
2929 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2930 " iwarp_state=0x%X, refcount=%d\n",
2931 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2932 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2933
2934 spin_lock_irqsave(&nesqp->lock, qplockflags);
2935
2936 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2937 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2938 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2939 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2940
2941 if (attr_mask & IB_QP_STATE) {
2942 switch (attr->qp_state) {
2943 case IB_QPS_INIT:
2944 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2945 nesqp->hwqp.qp_id);
2946 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2947 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2948 return -EINVAL;
2949 }
2950 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2951 issue_modify_qp = 1;
2952 break;
2953 case IB_QPS_RTR:
2954 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2955 nesqp->hwqp.qp_id);
2956 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2957 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2958 return -EINVAL;
2959 }
2960 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2961 issue_modify_qp = 1;
2962 break;
2963 case IB_QPS_RTS:
2964 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2965 nesqp->hwqp.qp_id);
2966 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2967 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2968 return -EINVAL;
2969 }
2970 if (nesqp->cm_id == NULL) {
2971 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2972 nesqp->hwqp.qp_id );
2973 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2974 return -EINVAL;
2975 }
2976 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2977 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2978 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2979 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2980 issue_modify_qp = 1;
2981 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2982 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2983 nesqp->hte_added = 1;
2984 break;
2985 case IB_QPS_SQD:
2986 issue_modify_qp = 1;
2987 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2988 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2989 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2990 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2991 return 0;
2992 } else {
2993 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2994 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2995 " ignored due to current iWARP state\n",
2996 nesqp->hwqp.qp_id);
2997 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2998 return -EINVAL;
2999 }
3000 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3001 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3002 " already done based on hw state.\n",
3003 nesqp->hwqp.qp_id);
3004 issue_modify_qp = 0;
3005 }
3006 switch (nesqp->hw_iwarp_state) {
3007 case NES_AEQE_IWARP_STATE_CLOSING:
3008 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3009 case NES_AEQE_IWARP_STATE_TERMINATE:
3010 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3011 break;
3012 case NES_AEQE_IWARP_STATE_ERROR:
3013 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3014 break;
3015 default:
3016 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3017 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3018 break;
3019 }
3020 }
3021 break;
3022 case IB_QPS_SQE:
3023 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3024 nesqp->hwqp.qp_id);
3025 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3026 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3027 return -EINVAL;
3028 }
3029 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3030 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3031 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3032 issue_modify_qp = 1;
3033 break;
3034 case IB_QPS_ERR:
3035 case IB_QPS_RESET:
3036 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3037 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3038 return -EINVAL;
3039 }
3040 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3041 nesqp->hwqp.qp_id);
3042 if (nesqp->term_flags)
3043 del_timer(&nesqp->terminate_timer);
3044
3045 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3046 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3047 if (nesqp->hte_added) {
3048 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3049 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3050 nesqp->hte_added = 0;
3051 }
3052 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3053 (nesdev->iw_status) &&
3054 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3055 next_iwarp_state |= NES_CQP_QP_RESET;
3056 } else {
3057 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3058 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3059 dont_wait = 1;
3060 }
3061 issue_modify_qp = 1;
3062 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3063 break;
3064 default:
3065 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3066 return -EINVAL;
3067 break;
3068 }
3069
3070 nesqp->ibqp_state = attr->qp_state;
3071 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3072 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3073 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3074 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3075 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3076 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3077 nesqp->iwarp_state);
3078 } else {
3079 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3080 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3081 nesqp->iwarp_state);
3082 }
3083 }
3084
3085 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3086 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3087 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3088 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3089 issue_modify_qp = 1;
3090 }
3091 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3092 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3093 issue_modify_qp = 1;
3094 }
3095 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3096 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3097 issue_modify_qp = 1;
3098 }
3099 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3100 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3101 issue_modify_qp = 1;
3102 }
3103
3104 if (nesqp->user_mode) {
3105 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3106 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3107 issue_modify_qp = 1;
3108 }
3109 }
3110
3111 original_last_aeq = nesqp->last_aeq;
3112 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3113
3114 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3115
3116 ret = 0;
3117
3118
3119 if (issue_modify_qp) {
3120 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3121 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3122 if (ret)
3123 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3124 " failed for QP%u.\n",
3125 next_iwarp_state, nesqp->hwqp.qp_id);
3126
3127 }
3128
3129 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3130 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3131 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3132 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3133 original_last_aeq, nesqp->last_aeq);
3134 if ((!ret) ||
3135 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3136 (ret))) {
3137 if (dont_wait) {
3138 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3139 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3140 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3141 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3142 original_last_aeq, nesqp->last_aeq);
3143 /* this one is for the cm_disconnect thread */
3144 spin_lock_irqsave(&nesqp->lock, qplockflags);
3145 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3146 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3147 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3148 nes_cm_disconn(nesqp);
3149 } else {
3150 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3151 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3152 }
3153 } else {
3154 spin_lock_irqsave(&nesqp->lock, qplockflags);
3155 if (nesqp->cm_id) {
3156 /* These two are for the timer thread */
3157 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3158 nesqp->cm_id->add_ref(nesqp->cm_id);
3159 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3160 " need ae to finish up, original_last_aeq = 0x%04X."
3161 " last_aeq = 0x%04X, scheduling timer.\n",
3162 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3163 original_last_aeq, nesqp->last_aeq);
3164 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3165 }
3166 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3167 } else {
3168 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3169 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3170 " need ae to finish up, original_last_aeq = 0x%04X."
3171 " last_aeq = 0x%04X.\n",
3172 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3173 original_last_aeq, nesqp->last_aeq);
3174 }
3175 }
3176 } else {
3177 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3178 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3179 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3180 original_last_aeq, nesqp->last_aeq);
3181 }
3182 } else {
3183 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3184 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3185 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3186 original_last_aeq, nesqp->last_aeq);
3187 }
3188
3189 err = 0;
3190
3191 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3192 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3193
3194 return err;
3195 }
3196
3197
3198 /**
3199 * nes_muticast_attach
3200 */
nes_multicast_attach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)3201 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3202 {
3203 nes_debug(NES_DBG_INIT, "\n");
3204 return -ENOSYS;
3205 }
3206
3207
3208 /**
3209 * nes_multicast_detach
3210 */
nes_multicast_detach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)3211 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3212 {
3213 nes_debug(NES_DBG_INIT, "\n");
3214 return -ENOSYS;
3215 }
3216
3217
3218 /**
3219 * nes_process_mad
3220 */
nes_process_mad(struct ib_device * ibdev,int mad_flags,u8 port_num,struct ib_wc * in_wc,struct ib_grh * in_grh,struct ib_mad * in_mad,struct ib_mad * out_mad)3221 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3222 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3223 struct ib_mad *in_mad, struct ib_mad *out_mad)
3224 {
3225 nes_debug(NES_DBG_INIT, "\n");
3226 return -ENOSYS;
3227 }
3228
3229 static inline void
fill_wqe_sg_send(struct nes_hw_qp_wqe * wqe,struct ib_send_wr * ib_wr,u32 uselkey)3230 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3231 {
3232 int sge_index;
3233 int total_payload_length = 0;
3234 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3235 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3236 ib_wr->sg_list[sge_index].addr);
3237 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3238 ib_wr->sg_list[sge_index].length);
3239 if (uselkey)
3240 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3241 (ib_wr->sg_list[sge_index].lkey));
3242 else
3243 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3244
3245 total_payload_length += ib_wr->sg_list[sge_index].length;
3246 }
3247 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3248 total_payload_length);
3249 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3250 total_payload_length);
3251 }
3252
3253 /**
3254 * nes_post_send
3255 */
nes_post_send(struct ib_qp * ibqp,struct ib_send_wr * ib_wr,struct ib_send_wr ** bad_wr)3256 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3257 struct ib_send_wr **bad_wr)
3258 {
3259 u64 u64temp;
3260 unsigned long flags = 0;
3261 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3262 struct nes_device *nesdev = nesvnic->nesdev;
3263 struct nes_qp *nesqp = to_nesqp(ibqp);
3264 struct nes_hw_qp_wqe *wqe;
3265 int err = 0;
3266 u32 qsize = nesqp->hwqp.sq_size;
3267 u32 head;
3268 u32 wqe_misc = 0;
3269 u32 wqe_count = 0;
3270 u32 counter;
3271
3272 if (nesqp->ibqp_state > IB_QPS_RTS) {
3273 err = -EINVAL;
3274 goto out;
3275 }
3276
3277 spin_lock_irqsave(&nesqp->lock, flags);
3278
3279 head = nesqp->hwqp.sq_head;
3280
3281 while (ib_wr) {
3282 /* Check for QP error */
3283 if (nesqp->term_flags) {
3284 err = -EINVAL;
3285 break;
3286 }
3287
3288 /* Check for SQ overflow */
3289 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3290 err = -ENOMEM;
3291 break;
3292 }
3293
3294 wqe = &nesqp->hwqp.sq_vbase[head];
3295 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3296 nesqp->hwqp.qp_id, wqe, head); */
3297 nes_fill_init_qp_wqe(wqe, nesqp, head);
3298 u64temp = (u64)(ib_wr->wr_id);
3299 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3300 u64temp);
3301 switch (ib_wr->opcode) {
3302 case IB_WR_SEND:
3303 case IB_WR_SEND_WITH_INV:
3304 if (IB_WR_SEND == ib_wr->opcode) {
3305 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3306 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3307 else
3308 wqe_misc = NES_IWARP_SQ_OP_SEND;
3309 } else {
3310 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3311 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3312 else
3313 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3314
3315 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3316 ib_wr->ex.invalidate_rkey);
3317 }
3318
3319 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3320 err = -EINVAL;
3321 break;
3322 }
3323
3324 if (ib_wr->send_flags & IB_SEND_FENCE)
3325 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3326
3327 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3328 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3329 (ib_wr->sg_list[0].length <= 64)) {
3330 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3331 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3332 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3333 ib_wr->sg_list[0].length);
3334 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3335 } else {
3336 fill_wqe_sg_send(wqe, ib_wr, 1);
3337 }
3338
3339 break;
3340 case IB_WR_RDMA_WRITE:
3341 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3342 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3343 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3344 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3345 err = -EINVAL;
3346 break;
3347 }
3348
3349 if (ib_wr->send_flags & IB_SEND_FENCE)
3350 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3351
3352 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3353 ib_wr->wr.rdma.rkey);
3354 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3355 ib_wr->wr.rdma.remote_addr);
3356
3357 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3358 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3359 (ib_wr->sg_list[0].length <= 64)) {
3360 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3361 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3362 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3363 ib_wr->sg_list[0].length);
3364 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3365 } else {
3366 fill_wqe_sg_send(wqe, ib_wr, 1);
3367 }
3368
3369 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3370 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3371 break;
3372 case IB_WR_RDMA_READ:
3373 case IB_WR_RDMA_READ_WITH_INV:
3374 /* iWARP only supports 1 sge for RDMA reads */
3375 if (ib_wr->num_sge > 1) {
3376 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3377 ib_wr->num_sge);
3378 err = -EINVAL;
3379 break;
3380 }
3381 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3382 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3383 } else {
3384 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3385 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3386 ib_wr->ex.invalidate_rkey);
3387 }
3388
3389 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3390 ib_wr->wr.rdma.remote_addr);
3391 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3392 ib_wr->wr.rdma.rkey);
3393 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3394 ib_wr->sg_list->length);
3395 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3396 ib_wr->sg_list->addr);
3397 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3398 ib_wr->sg_list->lkey);
3399 break;
3400 case IB_WR_LOCAL_INV:
3401 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3402 set_wqe_32bit_value(wqe->wqe_words,
3403 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3404 ib_wr->ex.invalidate_rkey);
3405 break;
3406 case IB_WR_FAST_REG_MR:
3407 {
3408 int i;
3409 int flags = ib_wr->wr.fast_reg.access_flags;
3410 struct nes_ib_fast_reg_page_list *pnesfrpl =
3411 container_of(ib_wr->wr.fast_reg.page_list,
3412 struct nes_ib_fast_reg_page_list,
3413 ibfrpl);
3414 u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
3415 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
3416
3417 if (ib_wr->wr.fast_reg.page_list_len >
3418 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3419 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3420 err = -EINVAL;
3421 break;
3422 }
3423 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3424 set_wqe_64bit_value(wqe->wqe_words,
3425 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3426 ib_wr->wr.fast_reg.iova_start);
3427 set_wqe_32bit_value(wqe->wqe_words,
3428 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3429 ib_wr->wr.fast_reg.length);
3430 set_wqe_32bit_value(wqe->wqe_words,
3431 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3432 set_wqe_32bit_value(wqe->wqe_words,
3433 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3434 ib_wr->wr.fast_reg.rkey);
3435 /* Set page size: */
3436 if (ib_wr->wr.fast_reg.page_shift == 12) {
3437 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3438 } else if (ib_wr->wr.fast_reg.page_shift == 21) {
3439 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3440 } else {
3441 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3442 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3443 err = -EINVAL;
3444 break;
3445 }
3446 /* Set access_flags */
3447 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3448 if (flags & IB_ACCESS_LOCAL_WRITE)
3449 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3450
3451 if (flags & IB_ACCESS_REMOTE_WRITE)
3452 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3453
3454 if (flags & IB_ACCESS_REMOTE_READ)
3455 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3456
3457 if (flags & IB_ACCESS_MW_BIND)
3458 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3459
3460 /* Fill in PBL info: */
3461 if (ib_wr->wr.fast_reg.page_list_len >
3462 pnesfrpl->ibfrpl.max_page_list_len) {
3463 nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
3464 " ib_wr=%p, value=%u, max=%u\n",
3465 ib_wr, ib_wr->wr.fast_reg.page_list_len,
3466 pnesfrpl->ibfrpl.max_page_list_len);
3467 err = -EINVAL;
3468 break;
3469 }
3470
3471 set_wqe_64bit_value(wqe->wqe_words,
3472 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3473 pnesfrpl->nes_wqe_pbl.paddr);
3474
3475 set_wqe_32bit_value(wqe->wqe_words,
3476 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3477 ib_wr->wr.fast_reg.page_list_len * 8);
3478
3479 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++)
3480 dst_page_list[i] = cpu_to_le64(src_page_list[i]);
3481
3482 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %llx, "
3483 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3484 "page_list_len: %u, wqe_misc: %x\n",
3485 (unsigned long long) ib_wr->wr.fast_reg.iova_start,
3486 ib_wr->wr.fast_reg.length,
3487 ib_wr->wr.fast_reg.rkey,
3488 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr,
3489 ib_wr->wr.fast_reg.page_list_len,
3490 wqe_misc);
3491 break;
3492 }
3493 default:
3494 /* error */
3495 err = -EINVAL;
3496 break;
3497 }
3498
3499 if (err)
3500 break;
3501
3502 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3503 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3504
3505 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3506
3507 ib_wr = ib_wr->next;
3508 head++;
3509 wqe_count++;
3510 if (head >= qsize)
3511 head = 0;
3512
3513 }
3514
3515 nesqp->hwqp.sq_head = head;
3516 barrier();
3517 while (wqe_count) {
3518 counter = min(wqe_count, ((u32)255));
3519 wqe_count -= counter;
3520 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3521 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3522 }
3523
3524 spin_unlock_irqrestore(&nesqp->lock, flags);
3525
3526 out:
3527 if (err)
3528 *bad_wr = ib_wr;
3529 return err;
3530 }
3531
3532
3533 /**
3534 * nes_post_recv
3535 */
nes_post_recv(struct ib_qp * ibqp,struct ib_recv_wr * ib_wr,struct ib_recv_wr ** bad_wr)3536 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3537 struct ib_recv_wr **bad_wr)
3538 {
3539 u64 u64temp;
3540 unsigned long flags = 0;
3541 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3542 struct nes_device *nesdev = nesvnic->nesdev;
3543 struct nes_qp *nesqp = to_nesqp(ibqp);
3544 struct nes_hw_qp_wqe *wqe;
3545 int err = 0;
3546 int sge_index;
3547 u32 qsize = nesqp->hwqp.rq_size;
3548 u32 head;
3549 u32 wqe_count = 0;
3550 u32 counter;
3551 u32 total_payload_length;
3552
3553 if (nesqp->ibqp_state > IB_QPS_RTS) {
3554 err = -EINVAL;
3555 goto out;
3556 }
3557
3558 spin_lock_irqsave(&nesqp->lock, flags);
3559
3560 head = nesqp->hwqp.rq_head;
3561
3562 while (ib_wr) {
3563 /* Check for QP error */
3564 if (nesqp->term_flags) {
3565 err = -EINVAL;
3566 break;
3567 }
3568
3569 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3570 err = -EINVAL;
3571 break;
3572 }
3573 /* Check for RQ overflow */
3574 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3575 err = -ENOMEM;
3576 break;
3577 }
3578
3579 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3580 wqe = &nesqp->hwqp.rq_vbase[head];
3581
3582 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3583 nesqp->hwqp.qp_id, wqe, head); */
3584 nes_fill_init_qp_wqe(wqe, nesqp, head);
3585 u64temp = (u64)(ib_wr->wr_id);
3586 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3587 u64temp);
3588 total_payload_length = 0;
3589 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3590 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3591 ib_wr->sg_list[sge_index].addr);
3592 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3593 ib_wr->sg_list[sge_index].length);
3594 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3595 ib_wr->sg_list[sge_index].lkey);
3596
3597 total_payload_length += ib_wr->sg_list[sge_index].length;
3598 }
3599 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3600 total_payload_length);
3601
3602 ib_wr = ib_wr->next;
3603 head++;
3604 wqe_count++;
3605 if (head >= qsize)
3606 head = 0;
3607 }
3608
3609 nesqp->hwqp.rq_head = head;
3610 barrier();
3611 while (wqe_count) {
3612 counter = min(wqe_count, ((u32)255));
3613 wqe_count -= counter;
3614 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3615 }
3616
3617 spin_unlock_irqrestore(&nesqp->lock, flags);
3618
3619 out:
3620 if (err)
3621 *bad_wr = ib_wr;
3622 return err;
3623 }
3624
3625
3626 /**
3627 * nes_poll_cq
3628 */
nes_poll_cq(struct ib_cq * ibcq,int num_entries,struct ib_wc * entry)3629 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3630 {
3631 u64 u64temp;
3632 u64 wrid;
3633 unsigned long flags = 0;
3634 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3635 struct nes_device *nesdev = nesvnic->nesdev;
3636 struct nes_cq *nescq = to_nescq(ibcq);
3637 struct nes_qp *nesqp;
3638 struct nes_hw_cqe cqe;
3639 u32 head;
3640 u32 wq_tail = 0;
3641 u32 cq_size;
3642 u32 cqe_count = 0;
3643 u32 wqe_index;
3644 u32 u32temp;
3645 u32 move_cq_head = 1;
3646 u32 err_code;
3647
3648 nes_debug(NES_DBG_CQ, "\n");
3649
3650 spin_lock_irqsave(&nescq->lock, flags);
3651
3652 head = nescq->hw_cq.cq_head;
3653 cq_size = nescq->hw_cq.cq_size;
3654
3655 while (cqe_count < num_entries) {
3656 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3657 NES_CQE_VALID) == 0)
3658 break;
3659
3660 /*
3661 * Make sure we read CQ entry contents *after*
3662 * we've checked the valid bit.
3663 */
3664 rmb();
3665
3666 cqe = nescq->hw_cq.cq_vbase[head];
3667 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3668 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3669 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3670 /* parse CQE, get completion context from WQE (either rq or sq) */
3671 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3672 ((u64)u32temp);
3673
3674 if (u64temp) {
3675 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3676 memset(entry, 0, sizeof *entry);
3677 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3678 entry->status = IB_WC_SUCCESS;
3679 } else {
3680 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3681 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3682 entry->status = err_code & 0x0000ffff;
3683
3684 /* The rest of the cqe's will be marked as flushed */
3685 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3686 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3687 NES_IWARP_CQE_MINOR_FLUSH);
3688 } else
3689 entry->status = IB_WC_WR_FLUSH_ERR;
3690 }
3691
3692 entry->qp = &nesqp->ibqp;
3693 entry->src_qp = nesqp->hwqp.qp_id;
3694
3695 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3696 if (nesqp->skip_lsmm) {
3697 nesqp->skip_lsmm = 0;
3698 nesqp->hwqp.sq_tail++;
3699 }
3700
3701 /* Working on a SQ Completion*/
3702 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3703 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3704 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3705 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3706 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3707 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3708
3709 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3710 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3711 case NES_IWARP_SQ_OP_RDMAW:
3712 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3713 entry->opcode = IB_WC_RDMA_WRITE;
3714 break;
3715 case NES_IWARP_SQ_OP_RDMAR:
3716 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3717 entry->opcode = IB_WC_RDMA_READ;
3718 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3719 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3720 break;
3721 case NES_IWARP_SQ_OP_SENDINV:
3722 case NES_IWARP_SQ_OP_SENDSEINV:
3723 case NES_IWARP_SQ_OP_SEND:
3724 case NES_IWARP_SQ_OP_SENDSE:
3725 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3726 entry->opcode = IB_WC_SEND;
3727 break;
3728 case NES_IWARP_SQ_OP_LOCINV:
3729 entry->opcode = IB_WC_LOCAL_INV;
3730 break;
3731 case NES_IWARP_SQ_OP_FAST_REG:
3732 entry->opcode = IB_WC_FAST_REG_MR;
3733 break;
3734 }
3735
3736 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3737 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3738 move_cq_head = 0;
3739 wq_tail = nesqp->hwqp.sq_tail;
3740 }
3741 } else {
3742 /* Working on a RQ Completion*/
3743 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3744 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3745 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3746 entry->opcode = IB_WC_RECV;
3747
3748 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3749 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3750 move_cq_head = 0;
3751 wq_tail = nesqp->hwqp.rq_tail;
3752 }
3753 }
3754
3755 entry->wr_id = wrid;
3756 entry++;
3757 cqe_count++;
3758 }
3759
3760 if (move_cq_head) {
3761 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3762 if (++head >= cq_size)
3763 head = 0;
3764 nescq->polled_completions++;
3765
3766 if ((nescq->polled_completions > (cq_size / 2)) ||
3767 (nescq->polled_completions == 255)) {
3768 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3769 " are pending %u of %u.\n",
3770 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3771 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3772 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3773 nescq->polled_completions = 0;
3774 }
3775 } else {
3776 /* Update the wqe index and set status to flush */
3777 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3778 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3779 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3780 cpu_to_le32(wqe_index);
3781 move_cq_head = 1; /* ready for next pass */
3782 }
3783 }
3784
3785 if (nescq->polled_completions) {
3786 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3787 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3788 nescq->polled_completions = 0;
3789 }
3790
3791 nescq->hw_cq.cq_head = head;
3792 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3793 cqe_count, nescq->hw_cq.cq_number);
3794
3795 spin_unlock_irqrestore(&nescq->lock, flags);
3796
3797 return cqe_count;
3798 }
3799
3800
3801 /**
3802 * nes_req_notify_cq
3803 */
nes_req_notify_cq(struct ib_cq * ibcq,enum ib_cq_notify_flags notify_flags)3804 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3805 {
3806 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3807 struct nes_device *nesdev = nesvnic->nesdev;
3808 struct nes_cq *nescq = to_nescq(ibcq);
3809 u32 cq_arm;
3810
3811 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3812 nescq->hw_cq.cq_number);
3813
3814 cq_arm = nescq->hw_cq.cq_number;
3815 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3816 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3817 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3818 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3819 else
3820 return -EINVAL;
3821
3822 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3823 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3824
3825 return 0;
3826 }
3827
3828
3829 /**
3830 * nes_init_ofa_device
3831 */
nes_init_ofa_device(struct net_device * netdev)3832 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3833 {
3834 struct nes_ib_device *nesibdev;
3835 struct nes_vnic *nesvnic = netdev_priv(netdev);
3836 struct nes_device *nesdev = nesvnic->nesdev;
3837
3838 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3839 if (nesibdev == NULL) {
3840 return NULL;
3841 }
3842 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3843 nesibdev->ibdev.owner = THIS_MODULE;
3844
3845 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3846 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3847 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3848
3849 nesibdev->ibdev.uverbs_cmd_mask =
3850 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3851 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3852 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3853 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3854 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3855 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3856 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3857 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3858 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3859 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3860 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3861 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3862 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3863 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3864 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3865 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3866 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3867 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3868 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3869 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3870 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3871 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3872
3873 nesibdev->ibdev.phys_port_cnt = 1;
3874 nesibdev->ibdev.num_comp_vectors = 1;
3875 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3876 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3877 nesibdev->ibdev.query_device = nes_query_device;
3878 nesibdev->ibdev.query_port = nes_query_port;
3879 nesibdev->ibdev.query_pkey = nes_query_pkey;
3880 nesibdev->ibdev.query_gid = nes_query_gid;
3881 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3882 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3883 nesibdev->ibdev.mmap = nes_mmap;
3884 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3885 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3886 nesibdev->ibdev.create_ah = nes_create_ah;
3887 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3888 nesibdev->ibdev.create_qp = nes_create_qp;
3889 nesibdev->ibdev.modify_qp = nes_modify_qp;
3890 nesibdev->ibdev.query_qp = nes_query_qp;
3891 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3892 nesibdev->ibdev.create_cq = nes_create_cq;
3893 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3894 nesibdev->ibdev.poll_cq = nes_poll_cq;
3895 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3896 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3897 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3898 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3899 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3900 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3901 nesibdev->ibdev.bind_mw = nes_bind_mw;
3902
3903 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr;
3904 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
3905 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
3906
3907 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3908 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3909 nesibdev->ibdev.process_mad = nes_process_mad;
3910
3911 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3912 nesibdev->ibdev.post_send = nes_post_send;
3913 nesibdev->ibdev.post_recv = nes_post_recv;
3914
3915 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3916 if (nesibdev->ibdev.iwcm == NULL) {
3917 ib_dealloc_device(&nesibdev->ibdev);
3918 return NULL;
3919 }
3920 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3921 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3922 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3923 nesibdev->ibdev.iwcm->connect = nes_connect;
3924 nesibdev->ibdev.iwcm->accept = nes_accept;
3925 nesibdev->ibdev.iwcm->reject = nes_reject;
3926 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3927 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3928
3929 return nesibdev;
3930 }
3931
3932
3933 /**
3934 * nes_handle_delayed_event
3935 */
nes_handle_delayed_event(unsigned long data)3936 static void nes_handle_delayed_event(unsigned long data)
3937 {
3938 struct nes_vnic *nesvnic = (void *) data;
3939
3940 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3941 struct ib_event event;
3942
3943 event.device = &nesvnic->nesibdev->ibdev;
3944 if (!event.device)
3945 goto stop_timer;
3946 event.event = nesvnic->delayed_event;
3947 event.element.port_num = nesvnic->logical_port + 1;
3948 ib_dispatch_event(&event);
3949 }
3950
3951 stop_timer:
3952 nesvnic->event_timer.function = NULL;
3953 }
3954
3955
nes_port_ibevent(struct nes_vnic * nesvnic)3956 void nes_port_ibevent(struct nes_vnic *nesvnic)
3957 {
3958 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3959 struct nes_device *nesdev = nesvnic->nesdev;
3960 struct ib_event event;
3961 event.device = &nesibdev->ibdev;
3962 event.element.port_num = nesvnic->logical_port + 1;
3963 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3964
3965 if (!nesvnic->event_timer.function) {
3966 ib_dispatch_event(&event);
3967 nesvnic->last_dispatched_event = event.event;
3968 nesvnic->event_timer.function = nes_handle_delayed_event;
3969 nesvnic->event_timer.data = (unsigned long) nesvnic;
3970 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3971 add_timer(&nesvnic->event_timer);
3972 } else {
3973 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3974 }
3975 nesvnic->delayed_event = event.event;
3976 }
3977
3978
3979 /**
3980 * nes_destroy_ofa_device
3981 */
nes_destroy_ofa_device(struct nes_ib_device * nesibdev)3982 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3983 {
3984 if (nesibdev == NULL)
3985 return;
3986
3987 nes_unregister_ofa_device(nesibdev);
3988
3989 kfree(nesibdev->ibdev.iwcm);
3990 ib_dealloc_device(&nesibdev->ibdev);
3991 }
3992
3993
3994 /**
3995 * nes_register_ofa_device
3996 */
nes_register_ofa_device(struct nes_ib_device * nesibdev)3997 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3998 {
3999 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4000 struct nes_device *nesdev = nesvnic->nesdev;
4001 struct nes_adapter *nesadapter = nesdev->nesadapter;
4002 int i, ret;
4003
4004 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
4005 if (ret) {
4006 return ret;
4007 }
4008
4009 /* Get the resources allocated to this device */
4010 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
4011 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
4012 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
4013 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
4014
4015 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4016 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4017 if (ret) {
4018 while (i > 0) {
4019 i--;
4020 device_remove_file(&nesibdev->ibdev.dev,
4021 nes_dev_attributes[i]);
4022 }
4023 ib_unregister_device(&nesibdev->ibdev);
4024 return ret;
4025 }
4026 }
4027
4028 nesvnic->of_device_registered = 1;
4029
4030 return 0;
4031 }
4032
4033
4034 /**
4035 * nes_unregister_ofa_device
4036 */
nes_unregister_ofa_device(struct nes_ib_device * nesibdev)4037 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
4038 {
4039 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4040 int i;
4041
4042 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4043 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4044 }
4045
4046 if (nesvnic->of_device_registered) {
4047 ib_unregister_device(&nesibdev->ibdev);
4048 }
4049
4050 nesvnic->of_device_registered = 0;
4051 }
4052