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RDMA/nes: Get rid of ring_doorbell parameter of nes_post_cqp_request()
[linux-block.git] / drivers / infiniband / hw / nes / nes_verbs.c
CommitLineData
3c2d774c
GS		 1/*
2 * Copyright (c) 2006 - 2008 NetEffect, Inc. 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 <asm/byteorder.h>
39
40#include <rdma/ib_verbs.h>
41#include <rdma/iw_cm.h>
42#include <rdma/ib_user_verbs.h>
43
44#include "nes.h"
45
46#include <rdma/ib_umem.h>
47
48atomic_t mod_qp_timouts;
49atomic_t qps_created;
50atomic_t sw_qps_destroyed;
51
1a855fbf 52static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
3c2d774c
GS		 53
54/**
55 * nes_alloc_mw
56 */
57static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
3c2d774c
GS		 58 struct nes_pd *nespd = to_nespd(ibpd);
59 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
60 struct nes_device *nesdev = nesvnic->nesdev;
61 struct nes_adapter *nesadapter = nesdev->nesadapter;
62 struct nes_cqp_request *cqp_request;
63 struct nes_mr *nesmr;
64 struct ib_mw *ibmw;
65 struct nes_hw_cqp_wqe *cqp_wqe;
66 int ret;
67 u32 stag;
68 u32 stag_index = 0;
69 u32 next_stag_index = 0;
70 u32 driver_key = 0;
71 u8 stag_key = 0;
72
73 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
74 stag_key = (u8)next_stag_index;
75
76 driver_key = 0;
77
78 next_stag_index >>= 8;
79 next_stag_index %= nesadapter->max_mr;
80
81 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
82 nesadapter->max_mr, &stag_index, &next_stag_index);
83 if (ret) {
84 return ERR_PTR(ret);
85 }
86
87 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
88 if (!nesmr) {
89 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
90 return ERR_PTR(-ENOMEM);
91 }
92
93 stag = stag_index << 8;
94 stag |= driver_key;
95 stag += (u32)stag_key;
96
97 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
98 stag, stag_index);
99
100 /* Register the region with the adapter */
101 cqp_request = nes_get_cqp_request(nesdev);
102 if (cqp_request == NULL) {
103 kfree(nesmr);
104 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
105 return ERR_PTR(-ENOMEM);
106 }
107
108 cqp_request->waiting = 1;
109 cqp_wqe = &cqp_request->cqp_wqe;
110
111 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
112 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
113 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
114 NES_CQP_STAG_REM_ACC_EN);
115
116 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
117 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
119
120 atomic_set(&cqp_request->refcount, 2);
8294f297 121 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 122
123 /* Wait for CQP */
124 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
125 NES_EVENT_TIMEOUT);
126 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
127 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
128 stag, ret, cqp_request->major_code, cqp_request->minor_code);
129 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 130 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 131 kfree(nesmr);
132 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
133 if (!ret) {
134 return ERR_PTR(-ETIME);
135 } else {
136 return ERR_PTR(-ENOMEM);
137 }
3c2d774c 138 }
1ff66e8c 139 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 140
141 nesmr->ibmw.rkey = stag;
142 nesmr->mode = IWNES_MEMREG_TYPE_MW;
143 ibmw = &nesmr->ibmw;
144 nesmr->pbl_4k = 0;
145 nesmr->pbls_used = 0;
146
147 return ibmw;
148}
149
150
151/**
152 * nes_dealloc_mw
153 */
154static int nes_dealloc_mw(struct ib_mw *ibmw)
155{
156 struct nes_mr *nesmr = to_nesmw(ibmw);
157 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
158 struct nes_device *nesdev = nesvnic->nesdev;
159 struct nes_adapter *nesadapter = nesdev->nesadapter;
160 struct nes_hw_cqp_wqe *cqp_wqe;
161 struct nes_cqp_request *cqp_request;
162 int err = 0;
3c2d774c
GS		 163 int ret;
164
165 /* Deallocate the window with the adapter */
166 cqp_request = nes_get_cqp_request(nesdev);
167 if (cqp_request == NULL) {
168 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
169 return -ENOMEM;
170 }
171 cqp_request->waiting = 1;
172 cqp_wqe = &cqp_request->cqp_wqe;
173 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
174 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
176
177 atomic_set(&cqp_request->refcount, 2);
8294f297 178 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 179
180 /* Wait for CQP */
181 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
182 ibmw->rkey);
183 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
184 NES_EVENT_TIMEOUT);
185 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
186 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
187 ret, cqp_request->major_code, cqp_request->minor_code);
1ff66e8c
RD		 188 if (!ret)
189 err = -ETIME;
190 else if (cqp_request->major_code)
191 err = -EIO;
192
193 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 194
195 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
196 (ibmw->rkey & 0x0fffff00) >> 8);
197 kfree(nesmr);
198
199 return err;
200}
201
202
203/**
204 * nes_bind_mw
205 */
206static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
207 struct ib_mw_bind *ibmw_bind)
208{
209 u64 u64temp;
210 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
211 struct nes_device *nesdev = nesvnic->nesdev;
212 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
213 struct nes_qp *nesqp = to_nesqp(ibqp);
214 struct nes_hw_qp_wqe *wqe;
215 unsigned long flags = 0;
216 u32 head;
217 u32 wqe_misc = 0;
218 u32 qsize;
219
220 if (nesqp->ibqp_state > IB_QPS_RTS)
221 return -EINVAL;
222
223 spin_lock_irqsave(&nesqp->lock, flags);
224
225 head = nesqp->hwqp.sq_head;
226 qsize = nesqp->hwqp.sq_tail;
227
228 /* Check for SQ overflow */
229 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
230 spin_unlock_irqrestore(&nesqp->lock, flags);
231 return -EINVAL;
232 }
233
234 wqe = &nesqp->hwqp.sq_vbase[head];
235 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
236 nes_fill_init_qp_wqe(wqe, nesqp, head);
237 u64temp = ibmw_bind->wr_id;
238 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
239 wqe_misc = NES_IWARP_SQ_OP_BIND;
240
241 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
242
243 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
244 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
245
246 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
247 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
248 }
249 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
250 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
251 }
252
253 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
257 ibmw_bind->length);
258 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
259 u64temp = (u64)ibmw_bind->addr;
260 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
261
262 head++;
263 if (head >= qsize)
264 head = 0;
265
266 nesqp->hwqp.sq_head = head;
267 barrier();
268
269 nes_write32(nesdev->regs+NES_WQE_ALLOC,
270 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
271
272 spin_unlock_irqrestore(&nesqp->lock, flags);
273
274 return 0;
275}
276
277
278/**
279 * nes_alloc_fmr
280 */
281static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
282 int ibmr_access_flags,
283 struct ib_fmr_attr *ibfmr_attr)
284{
285 unsigned long flags;
286 struct nes_pd *nespd = to_nespd(ibpd);
287 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
288 struct nes_device *nesdev = nesvnic->nesdev;
289 struct nes_adapter *nesadapter = nesdev->nesadapter;
290 struct nes_fmr *nesfmr;
291 struct nes_cqp_request *cqp_request;
292 struct nes_hw_cqp_wqe *cqp_wqe;
293 int ret;
294 u32 stag;
295 u32 stag_index = 0;
296 u32 next_stag_index = 0;
297 u32 driver_key = 0;
298 u32 opcode = 0;
299 u8 stag_key = 0;
300 int i=0;
301 struct nes_vpbl vpbl;
302
303 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
304 stag_key = (u8)next_stag_index;
305
306 driver_key = 0;
307
308 next_stag_index >>= 8;
309 next_stag_index %= nesadapter->max_mr;
310
311 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
312 nesadapter->max_mr, &stag_index, &next_stag_index);
313 if (ret) {
314 goto failed_resource_alloc;
315 }
316
317 nesfmr = kzalloc(sizeof(*nesfmr), GFP_KERNEL);
318 if (!nesfmr) {
319 ret = -ENOMEM;
320 goto failed_fmr_alloc;
321 }
322
323 nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR;
324 if (ibfmr_attr->max_pages == 1) {
325 /* use zero length PBL */
326 nesfmr->nesmr.pbl_4k = 0;
327 nesfmr->nesmr.pbls_used = 0;
328 } else if (ibfmr_attr->max_pages <= 32) {
329 /* use PBL 256 */
330 nesfmr->nesmr.pbl_4k = 0;
331 nesfmr->nesmr.pbls_used = 1;
332 } else if (ibfmr_attr->max_pages <= 512) {
333 /* use 4K PBLs */
334 nesfmr->nesmr.pbl_4k = 1;
335 nesfmr->nesmr.pbls_used = 1;
336 } else {
337 /* use two level 4K PBLs */
338 /* add support for two level 256B PBLs */
339 nesfmr->nesmr.pbl_4k = 1;
340 nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages >> 9) +
341 ((ibfmr_attr->max_pages & 511) ? 1 : 0);
342 }
343 /* Register the region with the adapter */
344 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
345
346 /* track PBL resources */
347 if (nesfmr->nesmr.pbls_used != 0) {
348 if (nesfmr->nesmr.pbl_4k) {
349 if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
350 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
351 ret = -ENOMEM;
352 goto failed_vpbl_alloc;
353 } else {
354 nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
355 }
356 } else {
357 if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
358 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
359 ret = -ENOMEM;
360 goto failed_vpbl_alloc;
361 } else {
362 nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
363 }
364 }
365 }
366
367 /* one level pbl */
368 if (nesfmr->nesmr.pbls_used == 0) {
369 nesfmr->root_vpbl.pbl_vbase = NULL;
370 nes_debug(NES_DBG_MR, "zero level pbl \n");
371 } else if (nesfmr->nesmr.pbls_used == 1) {
372 /* can change it to kmalloc & dma_map_single */
373 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
374 &nesfmr->root_vpbl.pbl_pbase);
375 if (!nesfmr->root_vpbl.pbl_vbase) {
376 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
377 ret = -ENOMEM;
378 goto failed_vpbl_alloc;
379 }
380 nesfmr->leaf_pbl_cnt = 0;
381 nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n",
382 nesfmr->root_vpbl.pbl_vbase);
383 }
384 /* two level pbl */
385 else {
386 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
387 &nesfmr->root_vpbl.pbl_pbase);
388 if (!nesfmr->root_vpbl.pbl_vbase) {
389 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
390 ret = -ENOMEM;
391 goto failed_vpbl_alloc;
392 }
393
394 nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
395 if (!nesfmr->root_vpbl.leaf_vpbl) {
396 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
397 ret = -ENOMEM;
398 goto failed_leaf_vpbl_alloc;
399 }
400
401 nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
402 nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
403 " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
404 nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
405
406 for (i=0; i<nesfmr->leaf_pbl_cnt; i++)
407 nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL;
408
409 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
410 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
411 &vpbl.pbl_pbase);
412
413 if (!vpbl.pbl_vbase) {
414 ret = -ENOMEM;
415 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
416 goto failed_leaf_vpbl_pages_alloc;
417 }
418
419 nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
420 nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
421 nesfmr->root_vpbl.leaf_vpbl[i] = vpbl;
422
423 nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n",
424 nesfmr->root_vpbl.pbl_vbase[i].pa_low,
425 nesfmr->root_vpbl.pbl_vbase[i].pa_high,
426 &nesfmr->root_vpbl.leaf_vpbl[i]);
427 }
428 }
429 nesfmr->ib_qp = NULL;
430 nesfmr->access_rights =0;
431
432 stag = stag_index << 8;
433 stag |= driver_key;
434 stag += (u32)stag_key;
435
436 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
437 cqp_request = nes_get_cqp_request(nesdev);
438 if (cqp_request == NULL) {
439 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
440 ret = -ENOMEM;
441 goto failed_leaf_vpbl_pages_alloc;
442 }
443 cqp_request->waiting = 1;
444 cqp_wqe = &cqp_request->cqp_wqe;
445
446 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
447 stag, stag_index);
448
449 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
450
451 if (nesfmr->nesmr.pbl_4k == 1)
452 opcode |= NES_CQP_STAG_PBL_BLK_SIZE;
453
454 if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) {
455 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE |
456 NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN;
457 nesfmr->access_rights |=
458 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE |
459 NES_CQP_STAG_REM_ACC_EN;
460 }
461
462 if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) {
463 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ |
464 NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN;
465 nesfmr->access_rights |=
466 NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ |
467 NES_CQP_STAG_REM_ACC_EN;
468 }
469
470 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
471 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
472 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
473 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
474
475 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] =
476 cpu_to_le32((nesfmr->nesmr.pbls_used>1) ?
477 (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used);
478
479 atomic_set(&cqp_request->refcount, 2);
8294f297 480 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 481
482 /* Wait for CQP */
483 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
484 NES_EVENT_TIMEOUT);
485 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
486 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
487 stag, ret, cqp_request->major_code, cqp_request->minor_code);
488
489 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 490 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 491 ret = (!ret) ? -ETIME : -EIO;
492 goto failed_leaf_vpbl_pages_alloc;
3c2d774c 493 }
1ff66e8c 494 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 495 nesfmr->nesmr.ibfmr.lkey = stag;
496 nesfmr->nesmr.ibfmr.rkey = stag;
497 nesfmr->attr = *ibfmr_attr;
498
499 return &nesfmr->nesmr.ibfmr;
500
501 failed_leaf_vpbl_pages_alloc:
502 /* unroll all allocated pages */
503 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
504 if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) {
505 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
506 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
507 }
508 }
509 if (nesfmr->root_vpbl.leaf_vpbl)
510 kfree(nesfmr->root_vpbl.leaf_vpbl);
511
512 failed_leaf_vpbl_alloc:
513 if (nesfmr->leaf_pbl_cnt == 0) {
514 if (nesfmr->root_vpbl.pbl_vbase)
515 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
516 nesfmr->root_vpbl.pbl_pbase);
517 } else
518 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
519 nesfmr->root_vpbl.pbl_pbase);
520
521 failed_vpbl_alloc:
522 kfree(nesfmr);
523
524 failed_fmr_alloc:
525 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
526
527 failed_resource_alloc:
528 return ERR_PTR(ret);
529}
530
531
532/**
533 * nes_dealloc_fmr
534 */
535static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
536{
537 struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
538 struct nes_fmr *nesfmr = to_nesfmr(nesmr);
539 struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
540 struct nes_device *nesdev = nesvnic->nesdev;
541 struct nes_mr temp_nesmr = *nesmr;
542 int i = 0;
543
544 temp_nesmr.ibmw.device = ibfmr->device;
545 temp_nesmr.ibmw.pd = ibfmr->pd;
546 temp_nesmr.ibmw.rkey = ibfmr->rkey;
547 temp_nesmr.ibmw.uobject = NULL;
548
549 /* free the resources */
550 if (nesfmr->leaf_pbl_cnt == 0) {
551 /* single PBL case */
552 if (nesfmr->root_vpbl.pbl_vbase)
553 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
554 nesfmr->root_vpbl.pbl_pbase);
555 } else {
556 for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
557 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
558 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
559 }
560 kfree(nesfmr->root_vpbl.leaf_vpbl);
561 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
562 nesfmr->root_vpbl.pbl_pbase);
563 }
564
565 return nes_dealloc_mw(&temp_nesmr.ibmw);
566}
567
568
569/**
570 * nes_map_phys_fmr
571 */
572static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
573 int list_len, u64 iova)
574{
575 return 0;
576}
577
578
579/**
580 * nes_unmap_frm
581 */
582static int nes_unmap_fmr(struct list_head *ibfmr_list)
583{
584 return 0;
585}
586
587
588
589/**
590 * nes_query_device
591 */
592static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
593{
594 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
595 struct nes_device *nesdev = nesvnic->nesdev;
596 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
597
598 memset(props, 0, sizeof(*props));
599 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
600
601 props->fw_ver = nesdev->nesadapter->fw_ver;
602 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
603 props->vendor_id = nesdev->nesadapter->vendor_id;
604 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
605 props->hw_ver = nesdev->nesadapter->hw_rev;
606 props->max_mr_size = 0x80000000;
607 props->max_qp = nesibdev->max_qp;
608 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
609 props->max_sge = nesdev->nesadapter->max_sge;
610 props->max_cq = nesibdev->max_cq;
611 props->max_cqe = nesdev->nesadapter->max_cqe - 1;
612 props->max_mr = nesibdev->max_mr;
613 props->max_mw = nesibdev->max_mr;
614 props->max_pd = nesibdev->max_pd;
615 props->max_sge_rd = 1;
616 switch (nesdev->nesadapter->max_irrq_wr) {
617 case 0:
618 props->max_qp_rd_atom = 1;
619 break;
620 case 1:
621 props->max_qp_rd_atom = 4;
622 break;
623 case 2:
624 props->max_qp_rd_atom = 16;
625 break;
626 case 3:
627 props->max_qp_rd_atom = 32;
628 break;
629 default:
630 props->max_qp_rd_atom = 0;
631 }
632 props->max_qp_init_rd_atom = props->max_qp_wr;
633 props->atomic_cap = IB_ATOMIC_NONE;
634 props->max_map_per_fmr = 1;
635
636 return 0;
637}
638
639
640/**
641 * nes_query_port
642 */
643static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
644{
645 memset(props, 0, sizeof(*props));
646
647 props->max_mtu = IB_MTU_2048;
648 props->active_mtu = IB_MTU_2048;
649 props->lid = 1;
650 props->lmc = 0;
651 props->sm_lid = 0;
652 props->sm_sl = 0;
653 props->state = IB_PORT_ACTIVE;
654 props->phys_state = 0;
655 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
656 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
657 props->gid_tbl_len = 1;
658 props->pkey_tbl_len = 1;
659 props->qkey_viol_cntr = 0;
660 props->active_width = IB_WIDTH_4X;
661 props->active_speed = 1;
662 props->max_msg_sz = 0x80000000;
663
664 return 0;
665}
666
667
668/**
669 * nes_modify_port
670 */
671static int nes_modify_port(struct ib_device *ibdev, u8 port,
672 int port_modify_mask, struct ib_port_modify *props)
673{
674 return 0;
675}
676
677
678/**
679 * nes_query_pkey
680 */
681static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
682{
683 *pkey = 0;
684 return 0;
685}
686
687
688/**
689 * nes_query_gid
690 */
691static int nes_query_gid(struct ib_device *ibdev, u8 port,
692 int index, union ib_gid *gid)
693{
694 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
695
696 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
697 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
698
699 return 0;
700}
701
702
703/**
704 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
705 * of all objects associated with a particular user-mode client.
706 */
707static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
708 struct ib_udata *udata)
709{
710 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
711 struct nes_device *nesdev = nesvnic->nesdev;
712 struct nes_adapter *nesadapter = nesdev->nesadapter;
713 struct nes_alloc_ucontext_req req;
714 struct nes_alloc_ucontext_resp uresp;
715 struct nes_ucontext *nes_ucontext;
716 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
717
718
719 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
720 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
721 return ERR_PTR(-EINVAL);
722 }
723
724 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
725 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
726 req.userspace_ver, NES_ABI_USERSPACE_VER);
727 return ERR_PTR(-EINVAL);
728 }
729
730
731 memset(&uresp, 0, sizeof uresp);
732
733 uresp.max_qps = nesibdev->max_qp;
734 uresp.max_pds = nesibdev->max_pd;
735 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
736 uresp.virtwq = nesadapter->virtwq;
737 uresp.kernel_ver = NES_ABI_KERNEL_VER;
738
739 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
740 if (!nes_ucontext)
741 return ERR_PTR(-ENOMEM);
742
743 nes_ucontext->nesdev = nesdev;
744 nes_ucontext->mmap_wq_offset = uresp.max_pds;
745 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
746 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
747 PAGE_SIZE;
748
749
750 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
751 kfree(nes_ucontext);
752 return ERR_PTR(-EFAULT);
753 }
754
755 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
756 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
757 atomic_set(&nes_ucontext->usecnt, 1);
758 return &nes_ucontext->ibucontext;
759}
760
761
762/**
763 * nes_dealloc_ucontext
764 */
765static int nes_dealloc_ucontext(struct ib_ucontext *context)
766{
767 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
768 /* struct nes_device *nesdev = nesvnic->nesdev; */
769 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
770
771 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
772 return 0;
773 kfree(nes_ucontext);
774 return 0;
775}
776
777
778/**
779 * nes_mmap
780 */
781static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
782{
783 unsigned long index;
784 struct nes_vnic *nesvnic = to_nesvnic(context->device);
785 struct nes_device *nesdev = nesvnic->nesdev;
786 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
787 struct nes_ucontext *nes_ucontext;
788 struct nes_qp *nesqp;
789
790 nes_ucontext = to_nesucontext(context);
791
792
793 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
794 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
795 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
796 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
797 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
798 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
799 return -EFAULT;
800 }
801 nesqp = nes_ucontext->mmap_nesqp[index];
802 if (nesqp == NULL) {
803 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
804 return -EFAULT;
805 }
806 if (remap_pfn_range(vma, vma->vm_start,
807 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
808 vma->vm_end - vma->vm_start,
809 vma->vm_page_prot)) {
810 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
811 return -EAGAIN;
812 }
813 vma->vm_private_data = nesqp;
814 return 0;
815 } else {
816 index = vma->vm_pgoff;
817 if (!test_bit(index, nes_ucontext->allocated_doorbells))
818 return -EFAULT;
819
820 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
821 if (io_remap_pfn_range(vma, vma->vm_start,
822 (nesdev->doorbell_start +
823 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
824 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
825 return -EAGAIN;
826 vma->vm_private_data = nes_ucontext;
827 return 0;
828 }
829
830 return -ENOSYS;
831}
832
833
834/**
835 * nes_alloc_pd
836 */
837static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
838 struct ib_ucontext *context, struct ib_udata *udata)
839{
840 struct nes_pd *nespd;
841 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
842 struct nes_device *nesdev = nesvnic->nesdev;
843 struct nes_adapter *nesadapter = nesdev->nesadapter;
844 struct nes_ucontext *nesucontext;
845 struct nes_alloc_pd_resp uresp;
846 u32 pd_num = 0;
847 int err;
848
849 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
850 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
851 atomic_read(&nesvnic->netdev->refcnt));
852
853 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
854 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
855 if (err) {
856 return ERR_PTR(err);
857 }
858
859 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
860 if (!nespd) {
861 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
862 return ERR_PTR(-ENOMEM);
863 }
864
865 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
866 nespd, nesvnic->nesibdev->ibdev.name);
867
868 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
869
870 if (context) {
871 nesucontext = to_nesucontext(context);
872 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
873 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
874 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
875 nespd->mmap_db_index, nespd->pd_id);
65b07ec2 876 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
3c2d774c
GS		 877 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
878 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
879 kfree(nespd);
880 return ERR_PTR(-ENOMEM);
881 }
882
883 uresp.pd_id = nespd->pd_id;
884 uresp.mmap_db_index = nespd->mmap_db_index;
885 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
886 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
887 kfree(nespd);
888 return ERR_PTR(-EFAULT);
889 }
890
891 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
892 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
893 nesucontext->first_free_db = nespd->mmap_db_index + 1;
894 }
895
896 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
897 return &nespd->ibpd;
898}
899
900
901/**
902 * nes_dealloc_pd
903 */
904static int nes_dealloc_pd(struct ib_pd *ibpd)
905{
906 struct nes_ucontext *nesucontext;
907 struct nes_pd *nespd = to_nespd(ibpd);
908 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
909 struct nes_device *nesdev = nesvnic->nesdev;
910 struct nes_adapter *nesadapter = nesdev->nesadapter;
911
912 if ((ibpd->uobject) && (ibpd->uobject->context)) {
913 nesucontext = to_nesucontext(ibpd->uobject->context);
914 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
915 nespd->mmap_db_index);
916 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
917 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
918 if (nesucontext->first_free_db > nespd->mmap_db_index) {
919 nesucontext->first_free_db = nespd->mmap_db_index;
920 }
921 }
922
923 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
924 nespd->pd_id, nespd);
925 nes_free_resource(nesadapter, nesadapter->allocated_pds,
926 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
927 kfree(nespd);
928
929 return 0;
930}
931
932
933/**
934 * nes_create_ah
935 */
936static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
937{
938 return ERR_PTR(-ENOSYS);
939}
940
941
942/**
943 * nes_destroy_ah
944 */
945static int nes_destroy_ah(struct ib_ah *ah)
946{
947 return -ENOSYS;
948}
949
950
951/**
952 * nes_get_encoded_size
953 */
954static inline u8 nes_get_encoded_size(int *size)
955{
956 u8 encoded_size = 0;
957 if (*size <= 32) {
958 *size = 32;
959 encoded_size = 1;
960 } else if (*size <= 128) {
961 *size = 128;
962 encoded_size = 2;
963 } else if (*size <= 512) {
964 *size = 512;
965 encoded_size = 3;
966 }
967 return (encoded_size);
968}
969
970
971
972/**
973 * nes_setup_virt_qp
974 */
975static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
976 struct nes_vnic *nesvnic, int sq_size, int rq_size)
977{
978 unsigned long flags;
979 void *mem;
980 __le64 *pbl = NULL;
981 __le64 *tpbl;
982 __le64 *pblbuffer;
983 struct nes_device *nesdev = nesvnic->nesdev;
984 struct nes_adapter *nesadapter = nesdev->nesadapter;
985 u32 pbl_entries;
986 u8 rq_pbl_entries;
987 u8 sq_pbl_entries;
988
989 pbl_entries = nespbl->pbl_size >> 3;
71e0957c 990 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
3c2d774c
GS		 991 nespbl->pbl_size, pbl_entries,
992 (void *)nespbl->pbl_vbase,
71e0957c 993 (unsigned long) nespbl->pbl_pbase);
3c2d774c
GS		 994 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
995 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
996 /* the first pbl to be fro the rq_vbase... */
997 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
998 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
999 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1000 if (!nespbl->page) {
1001 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1002 kfree(nespbl);
1003 return -ENOMEM;
1004 }
1005
1006 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1007 nesqp->page = nespbl->page;
1008 if (!nesqp->hwqp.sq_vbase) {
1009 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1010 kfree(nespbl);
1011 return -ENOMEM;
1012 }
1013
1014 /* Now to get to sq.. we need to calculate how many */
1015 /* PBL entries were used by the rq.. */
1016 pbl += sq_pbl_entries;
1017 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1018 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1019 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1020
71e0957c
RD		 1021 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1022 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1023 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
3c2d774c
GS		 1024 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1025 if (!nesadapter->free_256pbl) {
1026 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1027 nespbl->pbl_pbase);
1028 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1029 kunmap(nesqp->page);
1030 kfree(nespbl);
1031 return -ENOMEM;
1032 }
1033 nesadapter->free_256pbl--;
1034 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1035
1036 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1037 pblbuffer = nesqp->pbl_vbase;
1038 if (!nesqp->pbl_vbase) {
1039 /* memory allocated during nes_reg_user_mr() */
1040 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1041 nespbl->pbl_pbase);
1042 kfree(nespbl);
1043 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1044 nesadapter->free_256pbl++;
1045 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1046 kunmap(nesqp->page);
1047 return -ENOMEM;
1048 }
1049 memset(nesqp->pbl_vbase, 0, 256);
1050 /* fill in the page address in the pbl buffer.. */
1051 tpbl = pblbuffer + 16;
1052 pbl = (__le64 *)nespbl->pbl_vbase;
1053 while (sq_pbl_entries--)
1054 *tpbl++ = *pbl++;
1055 tpbl = pblbuffer;
1056 while (rq_pbl_entries--)
1057 *tpbl++ = *pbl++;
1058
1059 /* done with memory allocated during nes_reg_user_mr() */
1060 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1061 nespbl->pbl_pbase);
1062 kfree(nespbl);
1063
1064 nesqp->qp_mem_size =
1065 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1066 /* Round up to a multiple of a page */
1067 nesqp->qp_mem_size += PAGE_SIZE - 1;
1068 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1069
1070 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1071 &nesqp->hwqp.q2_pbase);
1072
1073 if (!mem) {
1074 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1075 nesqp->pbl_vbase = NULL;
1076 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1077 nesadapter->free_256pbl++;
1078 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1079 kunmap(nesqp->page);
1080 return -ENOMEM;
1081 }
1082 nesqp->hwqp.q2_vbase = mem;
1083 mem += 256;
1084 memset(nesqp->hwqp.q2_vbase, 0, 256);
1085 nesqp->nesqp_context = mem;
1086 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1087 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1088
1089 return 0;
1090}
1091
1092
1093/**
1094 * nes_setup_mmap_qp
1095 */
1096static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1097 int sq_size, int rq_size)
1098{
1099 void *mem;
1100 struct nes_device *nesdev = nesvnic->nesdev;
1101
1102 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1103 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1104 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1105 256; /* this is Q2 */
1106 /* Round up to a multiple of a page */
1107 nesqp->qp_mem_size += PAGE_SIZE - 1;
1108 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1109
1110 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1111 &nesqp->hwqp.sq_pbase);
1112 if (!mem)
1113 return -ENOMEM;
1114 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1115 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1116 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1117
1118 memset(mem, 0, nesqp->qp_mem_size);
1119
1120 nesqp->hwqp.sq_vbase = mem;
1121 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1122
1123 nesqp->hwqp.rq_vbase = mem;
1124 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1125 sizeof(struct nes_hw_qp_wqe) * sq_size;
1126 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1127
1128 nesqp->hwqp.q2_vbase = mem;
1129 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1130 sizeof(struct nes_hw_qp_wqe) * rq_size;
1131 mem += 256;
1132 memset(nesqp->hwqp.q2_vbase, 0, 256);
1133
1134 nesqp->nesqp_context = mem;
1135 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1136 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1137 return 0;
1138}
1139
1140
1141/**
1142 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1143 */
1144static inline void nes_free_qp_mem(struct nes_device *nesdev,
1145 struct nes_qp *nesqp, int virt_wqs)
1146{
1147 unsigned long flags;
1148 struct nes_adapter *nesadapter = nesdev->nesadapter;
1149 if (!virt_wqs) {
1150 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1151 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1152 }else {
1153 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1154 nesadapter->free_256pbl++;
1155 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1156 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1157 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1158 nesqp->pbl_vbase = NULL;
1159 kunmap(nesqp->page);
1160 }
1161}
1162
1163
1164/**
1165 * nes_create_qp
1166 */
1167static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1168 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1169{
1170 u64 u64temp= 0;
1171 u64 u64nesqp = 0;
1172 struct nes_pd *nespd = to_nespd(ibpd);
1173 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1174 struct nes_device *nesdev = nesvnic->nesdev;
1175 struct nes_adapter *nesadapter = nesdev->nesadapter;
1176 struct nes_qp *nesqp;
1177 struct nes_cq *nescq;
1178 struct nes_ucontext *nes_ucontext;
1179 struct nes_hw_cqp_wqe *cqp_wqe;
1180 struct nes_cqp_request *cqp_request;
1181 struct nes_create_qp_req req;
1182 struct nes_create_qp_resp uresp;
1183 struct nes_pbl *nespbl = NULL;
1184 u32 qp_num = 0;
1185 u32 opcode = 0;
1186 /* u32 counter = 0; */
1187 void *mem;
1188 unsigned long flags;
1189 int ret;
1190 int err;
1191 int virt_wqs = 0;
1192 int sq_size;
1193 int rq_size;
1194 u8 sq_encoded_size;
1195 u8 rq_encoded_size;
1196 /* int counter; */
1197
b846f25a
EC		 1198 if (init_attr->create_flags)
1199 return ERR_PTR(-EINVAL);
1200
3c2d774c
GS		 1201 atomic_inc(&qps_created);
1202 switch (init_attr->qp_type) {
1203 case IB_QPT_RC:
1204 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1205 init_attr->cap.max_inline_data = 0;
1206 } else {
1207 init_attr->cap.max_inline_data = 64;
1208 }
1209 sq_size = init_attr->cap.max_send_wr;
1210 rq_size = init_attr->cap.max_recv_wr;
1211
7495ab68 1212 /* check if the encoded sizes are OK or not... */
3c2d774c
GS		 1213 sq_encoded_size = nes_get_encoded_size(&sq_size);
1214 rq_encoded_size = nes_get_encoded_size(&rq_size);
1215
1216 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1217 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1218 rq_size, sq_size);
1219 return ERR_PTR(-EINVAL);
1220 }
1221
1222 init_attr->cap.max_send_wr = sq_size -2;
1223 init_attr->cap.max_recv_wr = rq_size -1;
1224 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1225
1226 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1227 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1228 if (ret) {
1229 return ERR_PTR(ret);
1230 }
1231
1232 /* Need 512 (actually now 1024) byte alignment on this structure */
1233 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1234 if (!mem) {
1235 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1236 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1237 return ERR_PTR(-ENOMEM);
1238 }
1239 u64nesqp = (unsigned long)mem;
1240 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1241 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1242 u64nesqp &= ~u64temp;
1243 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1244 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1245 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1246 nesqp->allocated_buffer = mem;
1247
1248 if (udata) {
1249 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1250 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1251 kfree(nesqp->allocated_buffer);
1252 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1253 return NULL;
1254 }
1255 if (req.user_wqe_buffers) {
1256 virt_wqs = 1;
1257 }
1258 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1259 nesqp->user_mode = 1;
1260 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1261 if (virt_wqs) {
1262 err = 1;
1263 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1264 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1265 list_del(&nespbl->list);
1266 err = 0;
1267 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1268 nespbl, nespbl->user_base);
1269 break;
1270 }
1271 }
1272 if (err) {
1273 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1274 (long long unsigned int)req.user_wqe_buffers);
1275 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1276 kfree(nesqp->allocated_buffer);
9300c0c0 1277 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1278 }
1279 }
1280
1281 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1282 nesqp->mmap_sq_db_index =
1283 find_next_zero_bit(nes_ucontext->allocated_wqs,
1284 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1285 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1286 nespd->mmap_db_index); */
51af33e8 1287 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
3c2d774c
GS		 1288 nes_debug(NES_DBG_QP,
1289 "db index > max user regions, failing create QP\n");
1290 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1291 if (virt_wqs) {
1292 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1293 nespbl->pbl_pbase);
1294 kfree(nespbl);
1295 }
1296 kfree(nesqp->allocated_buffer);
1297 return ERR_PTR(-ENOMEM);
1298 }
1299 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1300 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1301 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1302 } else {
1303 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1304 kfree(nesqp->allocated_buffer);
1305 return ERR_PTR(-EFAULT);
1306 }
1307 }
1308 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1309 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1310 if (err) {
1311 nes_debug(NES_DBG_QP,
1312 "error geting qp mem code = %d\n", err);
1313 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1314 kfree(nesqp->allocated_buffer);
1315 return ERR_PTR(-ENOMEM);
1316 }
1317
1318 nesqp->hwqp.sq_size = sq_size;
1319 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1320 nesqp->hwqp.sq_head = 1;
1321 nesqp->hwqp.rq_size = rq_size;
1322 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1323 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1324 (void *)nesqp->nesqp_context_pbase);
1325 */
1326 nesqp->hwqp.qp_id = qp_num;
1327 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1328 nesqp->nespd = nespd;
1329
1330 nescq = to_nescq(init_attr->send_cq);
1331 nesqp->nesscq = nescq;
1332 nescq = to_nescq(init_attr->recv_cq);
1333 nesqp->nesrcq = nescq;
1334
1335 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1336 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1337 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1338 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1339 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1340 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1341 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1342 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1343 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1344 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1345 u64temp = (u64)nesqp->hwqp.sq_pbase;
1346 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1347 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1348
1349
1350 if (!virt_wqs) {
1351 u64temp = (u64)nesqp->hwqp.sq_pbase;
1352 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1353 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1354 u64temp = (u64)nesqp->hwqp.rq_pbase;
1355 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1356 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1357 } else {
1358 u64temp = (u64)nesqp->pbl_pbase;
1359 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1360 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1361 }
1362
1363 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1364 nesvnic->next_qp_nic_index,
1365 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1366 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1367 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1368 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1369 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1370 nesvnic->next_qp_nic_index++;
1371 if ((nesvnic->next_qp_nic_index > 3) ||
1372 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1373 nesvnic->next_qp_nic_index = 0;
1374 }
1375 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1376
1377 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1378 u64temp = (u64)nesqp->hwqp.q2_pbase;
1379 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1380 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1381 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1382 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1383 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1384 ((((u32)nesadapter->max_irrq_wr) <<
1385 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1386 if (disable_mpa_crc) {
1387 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1388 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1389 }
1390
1391
1392 /* Create the QP */
1393 cqp_request = nes_get_cqp_request(nesdev);
1394 if (cqp_request == NULL) {
1395 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1396 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1397 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1398 kfree(nesqp->allocated_buffer);
1399 return ERR_PTR(-ENOMEM);
1400 }
1401 cqp_request->waiting = 1;
1402 cqp_wqe = &cqp_request->cqp_wqe;
1403
1404 if (!virt_wqs) {
1405 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1406 NES_CQP_QP_IWARP_STATE_IDLE;
1407 } else {
1408 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1409 NES_CQP_QP_IWARP_STATE_IDLE;
1410 }
1411 opcode |= NES_CQP_QP_CQS_VALID;
1412 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1413 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1414 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1415
1416 u64temp = (u64)nesqp->nesqp_context_pbase;
1417 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1418
1419 atomic_set(&cqp_request->refcount, 2);
8294f297 1420 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1421
1422 /* Wait for CQP */
1423 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1424 nesqp->hwqp.qp_id);
1425 ret = wait_event_timeout(cqp_request->waitq,
1426 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1427 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1428 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1429 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1430 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1431 cqp_request->major_code, cqp_request->minor_code);
1432 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 1433 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1434 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1435 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1436 kfree(nesqp->allocated_buffer);
1437 if (!ret) {
1438 return ERR_PTR(-ETIME);
1439 } else {
1440 return ERR_PTR(-EIO);
1441 }
3c2d774c
GS		 1442 }
1443
1ff66e8c
RD		 1444 nes_put_cqp_request(nesdev, cqp_request);
1445
3c2d774c
GS		 1446 if (ibpd->uobject) {
1447 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1448 uresp.actual_sq_size = sq_size;
1449 uresp.actual_rq_size = rq_size;
1450 uresp.qp_id = nesqp->hwqp.qp_id;
1451 uresp.nes_drv_opt = nes_drv_opt;
1452 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1453 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1454 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1455 kfree(nesqp->allocated_buffer);
1456 return ERR_PTR(-EFAULT);
1457 }
1458 }
1459
1460 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1461 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1462 spin_lock_init(&nesqp->lock);
1463 init_waitqueue_head(&nesqp->state_waitq);
1464 init_waitqueue_head(&nesqp->kick_waitq);
1465 nes_add_ref(&nesqp->ibqp);
1466 break;
1467 default:
1468 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1469 return ERR_PTR(-EINVAL);
1470 break;
1471 }
1472
1473 /* update the QP table */
1474 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1475 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1476 atomic_read(&nesvnic->netdev->refcnt));
1477
1478 return &nesqp->ibqp;
1479}
1480
1481
1482/**
1483 * nes_destroy_qp
1484 */
1485static int nes_destroy_qp(struct ib_qp *ibqp)
1486{
1487 struct nes_qp *nesqp = to_nesqp(ibqp);
1488 /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
1489 struct nes_ucontext *nes_ucontext;
1490 struct ib_qp_attr attr;
1491 struct iw_cm_id *cm_id;
1492 struct iw_cm_event cm_event;
1493 int ret;
1494
1495 atomic_inc(&sw_qps_destroyed);
1496 nesqp->destroyed = 1;
1497
1498 /* Blow away the connection if it exists. */
1499 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1500 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1501 attr.qp_state = IB_QPS_ERR;
1502 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1503 }
1504
1505 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1506 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1507 cm_id = nesqp->cm_id;
1508 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1509 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1510 cm_event.local_addr = cm_id->local_addr;
1511 cm_event.remote_addr = cm_id->remote_addr;
1512 cm_event.private_data = NULL;
1513 cm_event.private_data_len = 0;
1514
1515 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1516 "QP%u. cm_id = %p, refcount = %u. \n",
1517 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1518
1519 cm_id->rem_ref(cm_id);
1520 ret = cm_id->event_handler(cm_id, &cm_event);
1521 if (ret)
1522 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1523 }
1524
1525
1526 if (nesqp->user_mode) {
1527 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1528 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1529 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1530 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1531 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1532 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1533 }
1534 }
1535 if (nesqp->pbl_pbase)
1536 kunmap(nesqp->page);
1537 }
1538
1539 nes_rem_ref(&nesqp->ibqp);
1540 return 0;
1541}
1542
1543
1544/**
1545 * nes_create_cq
1546 */
1547static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1548 int comp_vector,
1549 struct ib_ucontext *context, struct ib_udata *udata)
1550{
1551 u64 u64temp;
1552 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1553 struct nes_device *nesdev = nesvnic->nesdev;
1554 struct nes_adapter *nesadapter = nesdev->nesadapter;
1555 struct nes_cq *nescq;
1556 struct nes_ucontext *nes_ucontext = NULL;
1557 struct nes_cqp_request *cqp_request;
1558 void *mem = NULL;
1559 struct nes_hw_cqp_wqe *cqp_wqe;
1560 struct nes_pbl *nespbl = NULL;
1561 struct nes_create_cq_req req;
1562 struct nes_create_cq_resp resp;
1563 u32 cq_num = 0;
1564 u32 opcode = 0;
1565 u32 pbl_entries = 1;
1566 int err;
1567 unsigned long flags;
1568 int ret;
1569
1570 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1571 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1572 if (err) {
1573 return ERR_PTR(err);
1574 }
1575
1576 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1577 if (!nescq) {
1578 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1579 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1580 return ERR_PTR(-ENOMEM);
1581 }
1582
1583 nescq->hw_cq.cq_size = max(entries + 1, 5);
1584 nescq->hw_cq.cq_number = cq_num;
1585 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1586
1587
1588 if (context) {
1589 nes_ucontext = to_nesucontext(context);
1590 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1591 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1592 kfree(nescq);
1593 return ERR_PTR(-EFAULT);
1594 }
1595 nesvnic->mcrq_ucontext = nes_ucontext;
1596 nes_ucontext->mcrqf = req.mcrqf;
1597 if (nes_ucontext->mcrqf) {
1598 if (nes_ucontext->mcrqf & 0x80000000)
1599 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 12 + (nes_ucontext->mcrqf & 0xf) - 1;
1600 else if (nes_ucontext->mcrqf & 0x40000000)
1601 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1602 else
1603 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1604 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1605 }
1606 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1607 (unsigned long)req.user_cq_buffer, entries);
9300c0c0 1608 err = 1;
3c2d774c
GS		 1609 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1610 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1611 list_del(&nespbl->list);
1612 err = 0;
1613 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1614 nespbl);
1615 break;
1616 }
1617 }
1618 if (err) {
1619 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1620 kfree(nescq);
9300c0c0 1621 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1622 }
1623
1624 pbl_entries = nespbl->pbl_size >> 3;
1625 nescq->cq_mem_size = 0;
1626 } else {
1627 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1628 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1629 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1630
1631 /* allocate the physical buffer space */
1632 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1633 &nescq->hw_cq.cq_pbase);
1634 if (!mem) {
1635 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1636 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1637 kfree(nescq);
1638 return ERR_PTR(-ENOMEM);
1639 }
1640
1641 memset(mem, 0, nescq->cq_mem_size);
1642 nescq->hw_cq.cq_vbase = mem;
1643 nescq->hw_cq.cq_head = 0;
1644 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1645 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1646 (u32)nescq->hw_cq.cq_pbase);
1647 }
1648
1649 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1650 spin_lock_init(&nescq->lock);
1651
1652 /* send CreateCQ request to CQP */
1653 cqp_request = nes_get_cqp_request(nesdev);
1654 if (cqp_request == NULL) {
1655 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1656 if (!context)
1657 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1658 nescq->hw_cq.cq_pbase);
1659 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1660 kfree(nescq);
1661 return ERR_PTR(-ENOMEM);
1662 }
1663 cqp_request->waiting = 1;
1664 cqp_wqe = &cqp_request->cqp_wqe;
1665
1666 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1667 NES_CQP_CQ_CHK_OVERFLOW |
1668 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1669
1670 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1671
1672 if (pbl_entries != 1) {
1673 if (pbl_entries > 32) {
1674 /* use 4k pbl */
1675 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1676 if (nesadapter->free_4kpbl == 0) {
1677 if (cqp_request->dynamic) {
1678 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1679 kfree(cqp_request);
1680 } else {
1681 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1682 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1683 }
1684 if (!context)
1685 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1686 nescq->hw_cq.cq_pbase);
1687 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1688 kfree(nescq);
1689 return ERR_PTR(-ENOMEM);
1690 } else {
1691 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1692 nescq->virtual_cq = 2;
1693 nesadapter->free_4kpbl--;
1694 }
1695 } else {
1696 /* use 256 byte pbl */
1697 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1698 if (nesadapter->free_256pbl == 0) {
1699 if (cqp_request->dynamic) {
1700 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1701 kfree(cqp_request);
1702 } else {
1703 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1704 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1705 }
1706 if (!context)
1707 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1708 nescq->hw_cq.cq_pbase);
1709 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1710 kfree(nescq);
1711 return ERR_PTR(-ENOMEM);
1712 } else {
1713 opcode |= NES_CQP_CQ_VIRT;
1714 nescq->virtual_cq = 1;
1715 nesadapter->free_256pbl--;
1716 }
1717 }
1718 }
1719
1720 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1721
1722 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1723 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1724 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1725 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1726
1727 if (context) {
1728 if (pbl_entries != 1)
1729 u64temp = (u64)nespbl->pbl_pbase;
1730 else
1731 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1732 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1733 nes_ucontext->mmap_db_index[0]);
1734 } else {
1735 u64temp = (u64)nescq->hw_cq.cq_pbase;
1736 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1737 }
1738 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1739 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1740 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1741 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1742 cpu_to_le32((u32)(u64temp >> 1));
1743 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1744 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1745
1746 atomic_set(&cqp_request->refcount, 2);
8294f297 1747 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1748
1749 /* Wait for CQP */
1750 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1751 nescq->hw_cq.cq_number);
1752 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1753 NES_EVENT_TIMEOUT * 2);
1754 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1755 nescq->hw_cq.cq_number, ret);
1756 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 1757 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1758 if (!context)
1759 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1760 nescq->hw_cq.cq_pbase);
1761 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1762 kfree(nescq);
1763 return ERR_PTR(-EIO);
3c2d774c 1764 }
1ff66e8c 1765 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1766
1767 if (context) {
1768 /* free the nespbl */
1769 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1770 nespbl->pbl_pbase);
1771 kfree(nespbl);
1772 resp.cq_id = nescq->hw_cq.cq_number;
1773 resp.cq_size = nescq->hw_cq.cq_size;
1774 resp.mmap_db_index = 0;
1775 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1776 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1777 kfree(nescq);
1778 return ERR_PTR(-EFAULT);
1779 }
1780 }
1781
1782 return &nescq->ibcq;
1783}
1784
1785
1786/**
1787 * nes_destroy_cq
1788 */
1789static int nes_destroy_cq(struct ib_cq *ib_cq)
1790{
1791 struct nes_cq *nescq;
1792 struct nes_device *nesdev;
1793 struct nes_vnic *nesvnic;
1794 struct nes_adapter *nesadapter;
1795 struct nes_hw_cqp_wqe *cqp_wqe;
1796 struct nes_cqp_request *cqp_request;
1797 unsigned long flags;
1798 u32 opcode = 0;
1799 int ret;
1800
1801 if (ib_cq == NULL)
1802 return 0;
1803
1804 nescq = to_nescq(ib_cq);
1805 nesvnic = to_nesvnic(ib_cq->device);
1806 nesdev = nesvnic->nesdev;
1807 nesadapter = nesdev->nesadapter;
1808
1809 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1810
1811 /* Send DestroyCQ request to CQP */
1812 cqp_request = nes_get_cqp_request(nesdev);
1813 if (cqp_request == NULL) {
1814 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1815 return -ENOMEM;
1816 }
1817 cqp_request->waiting = 1;
1818 cqp_wqe = &cqp_request->cqp_wqe;
1819 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1820 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1821 if (nescq->virtual_cq == 1) {
1822 nesadapter->free_256pbl++;
1823 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1824 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
33718363 1825 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
3c2d774c
GS		 1826 }
1827 } else if (nescq->virtual_cq == 2) {
1828 nesadapter->free_4kpbl++;
1829 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1830 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
33718363 1831 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
3c2d774c
GS		 1832 }
1833 opcode |= NES_CQP_CQ_4KB_CHUNK;
1834 }
1835
1836 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1837
1838 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1839 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1840 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1841 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1842 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1843 atomic_set(&cqp_request->refcount, 2);
8294f297 1844 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1845
1846 /* Wait for CQP */
1847 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1848 nescq->hw_cq.cq_number);
1849 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1850 NES_EVENT_TIMEOUT);
1851 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1852 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1853 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1854 cqp_request->minor_code);
1ff66e8c
RD		 1855 if (!ret) {
1856 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
3c2d774c 1857 nescq->hw_cq.cq_number);
1ff66e8c
RD		 1858 ret = -ETIME;
1859 } else if (cqp_request->major_code) {
1860 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
3c2d774c 1861 nescq->hw_cq.cq_number);
1ff66e8c 1862 ret = -EIO;
3c2d774c
GS		 1863 } else {
1864 ret = 0;
3c2d774c 1865 }
1ff66e8c 1866 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1867
1868 if (nescq->cq_mem_size)
1869 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
31d1e340 1870 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
3c2d774c
GS		 1871 kfree(nescq);
1872
1873 return ret;
1874}
1875
1876
1877/**
1878 * nes_reg_mr
1879 */
1880static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1881 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1882 dma_addr_t single_buffer, u16 pbl_count, u16 residual_page_count,
1883 int acc, u64 *iova_start)
1884{
1885 struct nes_hw_cqp_wqe *cqp_wqe;
1886 struct nes_cqp_request *cqp_request;
1887 unsigned long flags;
1888 int ret;
1889 struct nes_adapter *nesadapter = nesdev->nesadapter;
1890 /* int count; */
1891 u32 opcode = 0;
1892 u16 major_code;
1893
1894 /* Register the region with the adapter */
1895 cqp_request = nes_get_cqp_request(nesdev);
1896 if (cqp_request == NULL) {
1897 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1898 return -ENOMEM;
1899 }
1900 cqp_request->waiting = 1;
1901 cqp_wqe = &cqp_request->cqp_wqe;
1902
1903 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1904 /* track PBL resources */
1905 if (pbl_count != 0) {
1906 if (pbl_count > 1) {
1907 /* Two level PBL */
1908 if ((pbl_count+1) > nesadapter->free_4kpbl) {
1909 nes_debug(NES_DBG_MR, "Out of 4KB Pbls for two level request.\n");
1910 if (cqp_request->dynamic) {
1911 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1912 kfree(cqp_request);
1913 } else {
1914 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1915 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1916 }
1917 return -ENOMEM;
1918 } else {
1919 nesadapter->free_4kpbl -= pbl_count+1;
1920 }
1921 } else if (residual_page_count > 32) {
1922 if (pbl_count > nesadapter->free_4kpbl) {
1923 nes_debug(NES_DBG_MR, "Out of 4KB Pbls.\n");
1924 if (cqp_request->dynamic) {
1925 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1926 kfree(cqp_request);
1927 } else {
1928 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1929 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1930 }
1931 return -ENOMEM;
1932 } else {
1933 nesadapter->free_4kpbl -= pbl_count;
1934 }
1935 } else {
1936 if (pbl_count > nesadapter->free_256pbl) {
1937 nes_debug(NES_DBG_MR, "Out of 256B Pbls.\n");
1938 if (cqp_request->dynamic) {
1939 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1940 kfree(cqp_request);
1941 } else {
1942 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1943 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1944 }
1945 return -ENOMEM;
1946 } else {
1947 nesadapter->free_256pbl -= pbl_count;
1948 }
1949 }
1950 }
1951
1952 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1953
1954 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
1955 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
1956 if (acc & IB_ACCESS_LOCAL_WRITE)
1957 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
1958 if (acc & IB_ACCESS_REMOTE_WRITE)
1959 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
1960 if (acc & IB_ACCESS_REMOTE_READ)
1961 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
1962 if (acc & IB_ACCESS_MW_BIND)
1963 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
1964
1965 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1966 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1967 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
1968 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
1969
1970 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
1971 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
1972 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
1973 cpu_to_le32(nespd->pd_id & 0x00007fff);
1974 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
1975
1976 if (pbl_count == 0) {
1977 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
1978 } else {
1979 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
1980 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
1981 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX,
1982 (((pbl_count - 1) * 4096) + (residual_page_count*8)));
1983
1984 if ((pbl_count > 1) || (residual_page_count > 32))
1985 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
1986 }
1987 barrier();
1988
1989 atomic_set(&cqp_request->refcount, 2);
8294f297 1990 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1991
1992 /* Wait for CQP */
1993 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1994 NES_EVENT_TIMEOUT);
1995 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
1996 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1997 stag, ret, cqp_request->major_code, cqp_request->minor_code);
1998 major_code = cqp_request->major_code;
1ff66e8c
RD		 1999 nes_put_cqp_request(nesdev, cqp_request);
2000
3c2d774c
GS		 2001 if (!ret)
2002 return -ETIME;
2003 else if (major_code)
2004 return -EIO;
2005 else
2006 return 0;
2007
2008 return 0;
2009}
2010
2011
2012/**
2013 * nes_reg_phys_mr
2014 */
2015static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2016 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2017 u64 * iova_start)
2018{
2019 u64 region_length;
2020 struct nes_pd *nespd = to_nespd(ib_pd);
2021 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2022 struct nes_device *nesdev = nesvnic->nesdev;
2023 struct nes_adapter *nesadapter = nesdev->nesadapter;
2024 struct nes_mr *nesmr;
2025 struct ib_mr *ibmr;
2026 struct nes_vpbl vpbl;
2027 struct nes_root_vpbl root_vpbl;
2028 u32 stag;
2029 u32 i;
2030 u32 stag_index = 0;
2031 u32 next_stag_index = 0;
2032 u32 driver_key = 0;
2033 u32 root_pbl_index = 0;
2034 u32 cur_pbl_index = 0;
2035 int err = 0, pbl_depth = 0;
2036 int ret = 0;
2037 u16 pbl_count = 0;
2038 u8 single_page = 1;
2039 u8 stag_key = 0;
2040
2041 pbl_depth = 0;
2042 region_length = 0;
2043 vpbl.pbl_vbase = NULL;
2044 root_vpbl.pbl_vbase = NULL;
2045 root_vpbl.pbl_pbase = 0;
2046
2047 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2048 stag_key = (u8)next_stag_index;
2049
2050 driver_key = 0;
2051
2052 next_stag_index >>= 8;
2053 next_stag_index %= nesadapter->max_mr;
2054 if (num_phys_buf > (1024*512)) {
2055 return ERR_PTR(-E2BIG);
2056 }
2057
2058 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2059 &stag_index, &next_stag_index);
2060 if (err) {
2061 return ERR_PTR(err);
2062 }
2063
2064 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2065 if (!nesmr) {
2066 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2067 return ERR_PTR(-ENOMEM);
2068 }
2069
2070 for (i = 0; i < num_phys_buf; i++) {
2071
2072 if ((i & 0x01FF) == 0) {
2073 if (root_pbl_index == 1) {
2074 /* Allocate the root PBL */
2075 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2076 &root_vpbl.pbl_pbase);
2077 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2078 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2079 if (!root_vpbl.pbl_vbase) {
2080 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2081 vpbl.pbl_pbase);
2082 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2083 kfree(nesmr);
2084 return ERR_PTR(-ENOMEM);
2085 }
2086 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2087 if (!root_vpbl.leaf_vpbl) {
2088 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2089 root_vpbl.pbl_pbase);
2090 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2091 vpbl.pbl_pbase);
2092 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2093 kfree(nesmr);
2094 return ERR_PTR(-ENOMEM);
2095 }
2096 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2097 root_vpbl.pbl_vbase[0].pa_high =
2098 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2099 root_vpbl.leaf_vpbl[0] = vpbl;
2100 }
2101 /* Allocate a 4K buffer for the PBL */
2102 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2103 &vpbl.pbl_pbase);
2104 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2105 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2106 if (!vpbl.pbl_vbase) {
2107 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2108 ibmr = ERR_PTR(-ENOMEM);
2109 kfree(nesmr);
2110 goto reg_phys_err;
2111 }
2112 /* Fill in the root table */
2113 if (1 <= root_pbl_index) {
2114 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2115 cpu_to_le32((u32)vpbl.pbl_pbase);
2116 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2117 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2118 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2119 }
2120 root_pbl_index++;
2121 cur_pbl_index = 0;
2122 }
2123 if (buffer_list[i].addr & ~PAGE_MASK) {
2124 /* TODO: Unwind allocated buffers */
2125 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2126 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2127 (unsigned int) buffer_list[i].addr);
2128 ibmr = ERR_PTR(-EINVAL);
2129 kfree(nesmr);
2130 goto reg_phys_err;
2131 }
2132
2133 if (!buffer_list[i].size) {
2134 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2135 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2136 ibmr = ERR_PTR(-EINVAL);
2137 kfree(nesmr);
2138 goto reg_phys_err;
2139 }
2140
2141 region_length += buffer_list[i].size;
2142 if ((i != 0) && (single_page)) {
2143 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2144 single_page = 0;
2145 }
2146 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr);
2147 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2148 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2149 }
2150
2151 stag = stag_index << 8;
2152 stag |= driver_key;
2153 stag += (u32)stag_key;
2154
2155 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2156 " length = 0x%016lX, index = 0x%08X\n",
2157 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2158
2159 region_length -= (*iova_start)&PAGE_MASK;
2160
2161 /* Make the leaf PBL the root if only one PBL */
2162 if (root_pbl_index == 1) {
2163 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2164 }
2165
2166 if (single_page) {
2167 pbl_count = 0;
2168 } else {
2169 pbl_count = root_pbl_index;
2170 }
2171 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2172 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start);
2173
2174 if (ret == 0) {
2175 nesmr->ibmr.rkey = stag;
2176 nesmr->ibmr.lkey = stag;
2177 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2178 ibmr = &nesmr->ibmr;
2179 nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
2180 nesmr->pbls_used = pbl_count;
2181 if (pbl_count > 1) {
2182 nesmr->pbls_used++;
2183 }
2184 } else {
2185 kfree(nesmr);
2186 ibmr = ERR_PTR(-ENOMEM);
2187 }
2188
2189 reg_phys_err:
2190 /* free the resources */
2191 if (root_pbl_index == 1) {
2192 /* single PBL case */
2193 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2194 } else {
2195 for (i=0; i<root_pbl_index; i++) {
2196 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2197 root_vpbl.leaf_vpbl[i].pbl_pbase);
2198 }
2199 kfree(root_vpbl.leaf_vpbl);
2200 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2201 root_vpbl.pbl_pbase);
2202 }
2203
2204 return ibmr;
2205}
2206
2207
2208/**
2209 * nes_get_dma_mr
2210 */
2211static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2212{
2213 struct ib_phys_buf bl;
2214 u64 kva = 0;
2215
2216 nes_debug(NES_DBG_MR, "\n");
2217
2218 bl.size = (u64)0xffffffffffULL;
2219 bl.addr = 0;
2220 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2221}
2222
2223
2224/**
2225 * nes_reg_user_mr
2226 */
2227static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2228 u64 virt, int acc, struct ib_udata *udata)
2229{
2230 u64 iova_start;
2231 __le64 *pbl;
2232 u64 region_length;
2233 dma_addr_t last_dma_addr = 0;
2234 dma_addr_t first_dma_addr = 0;
2235 struct nes_pd *nespd = to_nespd(pd);
2236 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2237 struct nes_device *nesdev = nesvnic->nesdev;
2238 struct nes_adapter *nesadapter = nesdev->nesadapter;
2239 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2240 struct ib_umem_chunk *chunk;
2241 struct nes_ucontext *nes_ucontext;
2242 struct nes_pbl *nespbl;
2243 struct nes_mr *nesmr;
2244 struct ib_umem *region;
2245 struct nes_mem_reg_req req;
2246 struct nes_vpbl vpbl;
2247 struct nes_root_vpbl root_vpbl;
2248 int nmap_index, page_index;
2249 int page_count = 0;
2250 int err, pbl_depth = 0;
2251 int chunk_pages;
2252 int ret;
2253 u32 stag;
2254 u32 stag_index = 0;
2255 u32 next_stag_index;
2256 u32 driver_key;
2257 u32 root_pbl_index = 0;
2258 u32 cur_pbl_index = 0;
2259 u32 skip_pages;
2260 u16 pbl_count;
2261 u8 single_page = 1;
2262 u8 stag_key;
2263
cb9fbc5c 2264 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
3c2d774c
GS		 2265 if (IS_ERR(region)) {
2266 return (struct ib_mr *)region;
2267 }
2268
2269 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2270 " offset = %u, page size = %u.\n",
2271 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2272 region->offset, region->page_size);
2273
2274 skip_pages = ((u32)region->offset) >> 12;
2275
2276 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2277 return ERR_PTR(-EFAULT);
2278 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2279
2280 switch (req.reg_type) {
2281 case IWNES_MEMREG_TYPE_MEM:
2282 pbl_depth = 0;
2283 region_length = 0;
2284 vpbl.pbl_vbase = NULL;
2285 root_vpbl.pbl_vbase = NULL;
2286 root_vpbl.pbl_pbase = 0;
2287
2288 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2289 stag_key = (u8)next_stag_index;
2290
2291 driver_key = next_stag_index & 0x70000000;
2292
2293 next_stag_index >>= 8;
2294 next_stag_index %= nesadapter->max_mr;
2295
2296 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2297 nesadapter->max_mr, &stag_index, &next_stag_index);
2298 if (err) {
2299 ib_umem_release(region);
2300 return ERR_PTR(err);
2301 }
2302
2303 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2304 if (!nesmr) {
2305 ib_umem_release(region);
2306 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2307 return ERR_PTR(-ENOMEM);
2308 }
2309 nesmr->region = region;
2310
2311 list_for_each_entry(chunk, &region->chunk_list, list) {
2312 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2313 chunk->nents, chunk->nmap);
2314 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2315 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2316 ib_umem_release(region);
2317 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2318 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2319 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2320 ibmr = ERR_PTR(-EINVAL);
2321 kfree(nesmr);
2322 goto reg_user_mr_err;
2323 }
2324
2325 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2326 ib_umem_release(region);
2327 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2328 stag_index);
2329 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2330 ibmr = ERR_PTR(-EINVAL);
2331 kfree(nesmr);
2332 goto reg_user_mr_err;
2333 }
2334
2335 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2336 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2337 region_length -= skip_pages << 12;
2338 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2339 skip_pages = 0;
2340 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2341 goto enough_pages;
2342 if ((page_count&0x01FF) == 0) {
24797a34 2343 if (page_count >= 1024 * 512) {
3c2d774c 2344 ib_umem_release(region);
3c2d774c
GS		 2345 nes_free_resource(nesadapter,
2346 nesadapter->allocated_mrs, stag_index);
2347 kfree(nesmr);
2348 ibmr = ERR_PTR(-E2BIG);
2349 goto reg_user_mr_err;
2350 }
2351 if (root_pbl_index == 1) {
2352 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2353 8192, &root_vpbl.pbl_pbase);
2354 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2355 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2356 if (!root_vpbl.pbl_vbase) {
2357 ib_umem_release(region);
2358 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2359 vpbl.pbl_pbase);
2360 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2361 stag_index);
2362 kfree(nesmr);
2363 ibmr = ERR_PTR(-ENOMEM);
2364 goto reg_user_mr_err;
2365 }
2366 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2367 GFP_KERNEL);
2368 if (!root_vpbl.leaf_vpbl) {
2369 ib_umem_release(region);
2370 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2371 root_vpbl.pbl_pbase);
2372 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2373 vpbl.pbl_pbase);
2374 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2375 stag_index);
2376 kfree(nesmr);
2377 ibmr = ERR_PTR(-ENOMEM);
2378 goto reg_user_mr_err;
2379 }
2380 root_vpbl.pbl_vbase[0].pa_low =
2381 cpu_to_le32((u32)vpbl.pbl_pbase);
2382 root_vpbl.pbl_vbase[0].pa_high =
2383 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2384 root_vpbl.leaf_vpbl[0] = vpbl;
2385 }
2386 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2387 &vpbl.pbl_pbase);
2388 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2389 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2390 if (!vpbl.pbl_vbase) {
2391 ib_umem_release(region);
2392 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2393 ibmr = ERR_PTR(-ENOMEM);
2394 kfree(nesmr);
2395 goto reg_user_mr_err;
2396 }
2397 if (1 <= root_pbl_index) {
2398 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2399 cpu_to_le32((u32)vpbl.pbl_pbase);
2400 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2401 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2402 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2403 }
2404 root_pbl_index++;
2405 cur_pbl_index = 0;
2406 }
2407 if (single_page) {
2408 if (page_count != 0) {
2409 if ((last_dma_addr+4096) !=
2410 (sg_dma_address(&chunk->page_list[nmap_index])+
2411 (page_index*4096)))
2412 single_page = 0;
2413 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2414 (page_index*4096);
2415 } else {
2416 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2417 (page_index*4096);
2418 last_dma_addr = first_dma_addr;
2419 }
2420 }
2421
2422 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2423 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2424 (page_index*4096)));
2425 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2426 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2427 (page_index*4096))) >> 32)));
2428 cur_pbl_index++;
2429 page_count++;
2430 }
2431 }
2432 }
2433 enough_pages:
2434 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2435 " stag_key=0x%08x\n",
2436 stag_index, driver_key, stag_key);
2437 stag = stag_index << 8;
2438 stag |= driver_key;
2439 stag += (u32)stag_key;
2440 if (stag == 0) {
2441 stag = 1;
2442 }
2443
2444 iova_start = virt;
2445 /* Make the leaf PBL the root if only one PBL */
2446 if (root_pbl_index == 1) {
2447 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2448 }
2449
2450 if (single_page) {
2451 pbl_count = 0;
2452 } else {
2453 pbl_count = root_pbl_index;
2454 first_dma_addr = 0;
2455 }
2456 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2457 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2458 stag, (unsigned int)iova_start,
2459 (unsigned int)region_length, stag_index,
2460 (unsigned long long)region->length, pbl_count);
2461 ret = nes_reg_mr( nesdev, nespd, stag, region->length, &root_vpbl,
2462 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc, &iova_start);
2463
2464 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2465
2466 if (ret == 0) {
2467 nesmr->ibmr.rkey = stag;
2468 nesmr->ibmr.lkey = stag;
2469 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2470 ibmr = &nesmr->ibmr;
2471 nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
2472 nesmr->pbls_used = pbl_count;
2473 if (pbl_count > 1) {
2474 nesmr->pbls_used++;
2475 }
2476 } else {
2477 ib_umem_release(region);
2478 kfree(nesmr);
2479 ibmr = ERR_PTR(-ENOMEM);
2480 }
2481
2482 reg_user_mr_err:
2483 /* free the resources */
2484 if (root_pbl_index == 1) {
2485 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2486 vpbl.pbl_pbase);
2487 } else {
2488 for (page_index=0; page_index<root_pbl_index; page_index++) {
2489 pci_free_consistent(nesdev->pcidev, 4096,
2490 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2491 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2492 }
2493 kfree(root_vpbl.leaf_vpbl);
2494 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2495 root_vpbl.pbl_pbase);
2496 }
2497
2498 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2499
2500 return ibmr;
2501 break;
2502 case IWNES_MEMREG_TYPE_QP:
2503 case IWNES_MEMREG_TYPE_CQ:
2504 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2505 if (!nespbl) {
2506 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2507 ib_umem_release(region);
2508 return ERR_PTR(-ENOMEM);
2509 }
2510 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2511 if (!nesmr) {
2512 ib_umem_release(region);
2513 kfree(nespbl);
2514 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2515 return ERR_PTR(-ENOMEM);
2516 }
2517 nesmr->region = region;
2518 nes_ucontext = to_nesucontext(pd->uobject->context);
2519 pbl_depth = region->length >> 12;
2520 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2521 nespbl->pbl_size = pbl_depth*sizeof(u64);
2522 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2523 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2524 } else {
2525 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2526 }
2527
2528 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2529 nespbl->pbl_size, pbl_depth);
2530 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2531 &nespbl->pbl_pbase);
2532 if (!pbl) {
2533 ib_umem_release(region);
2534 kfree(nesmr);
2535 kfree(nespbl);
2536 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2537 return ERR_PTR(-ENOMEM);
2538 }
2539
2540 nespbl->pbl_vbase = (u64 *)pbl;
2541 nespbl->user_base = start;
71e0957c 2542 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
3c2d774c 2543 " pbl_vbase=%p user_base=0x%lx\n",
71e0957c
RD		 2544 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2545 (void *) nespbl->pbl_vbase, nespbl->user_base);
3c2d774c
GS		 2546
2547 list_for_each_entry(chunk, &region->chunk_list, list) {
2548 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2549 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2550 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2551 nespbl->page = sg_page(&chunk->page_list[0]);
2552 for (page_index=0; page_index<chunk_pages; page_index++) {
2553 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2554 (sg_dma_address(&chunk->page_list[nmap_index])+
2555 (page_index*4096)));
2556 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2557 (sg_dma_address(&chunk->page_list[nmap_index])+
2558 (page_index*4096)))>>32);
2559 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2560 (unsigned long long)*pbl,
2561 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2562 pbl++;
2563 }
2564 }
2565 }
2566 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2567 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2568 } else {
2569 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2570 }
2571 nesmr->ibmr.rkey = -1;
2572 nesmr->ibmr.lkey = -1;
2573 nesmr->mode = req.reg_type;
2574 return &nesmr->ibmr;
2575 break;
2576 }
2577
2578 return ERR_PTR(-ENOSYS);
2579}
2580
2581
2582/**
2583 * nes_dereg_mr
2584 */
2585static int nes_dereg_mr(struct ib_mr *ib_mr)
2586{
2587 struct nes_mr *nesmr = to_nesmr(ib_mr);
2588 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2589 struct nes_device *nesdev = nesvnic->nesdev;
2590 struct nes_adapter *nesadapter = nesdev->nesadapter;
2591 struct nes_hw_cqp_wqe *cqp_wqe;
2592 struct nes_cqp_request *cqp_request;
2593 unsigned long flags;
2594 int ret;
2595 u16 major_code;
2596 u16 minor_code;
2597
2598 if (nesmr->region) {
2599 ib_umem_release(nesmr->region);
2600 }
2601 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2602 kfree(nesmr);
2603 return 0;
2604 }
2605
2606 /* Deallocate the region with the adapter */
2607
2608 cqp_request = nes_get_cqp_request(nesdev);
2609 if (cqp_request == NULL) {
2610 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2611 return -ENOMEM;
2612 }
2613 cqp_request->waiting = 1;
2614 cqp_wqe = &cqp_request->cqp_wqe;
2615
2616 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2617 if (nesmr->pbls_used != 0) {
2618 if (nesmr->pbl_4k) {
2619 nesadapter->free_4kpbl += nesmr->pbls_used;
2620 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
2621 printk(KERN_ERR PFX "free 4KB PBLs(%u) has exceeded the max(%u)\n",
2622 nesadapter->free_4kpbl, nesadapter->max_4kpbl);
2623 }
2624 } else {
2625 nesadapter->free_256pbl += nesmr->pbls_used;
2626 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
2627 printk(KERN_ERR PFX "free 256B PBLs(%u) has exceeded the max(%u)\n",
2628 nesadapter->free_256pbl, nesadapter->max_256pbl);
2629 }
2630 }
2631 }
2632
2633 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2634 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2635 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2636 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2637 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2638 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2639
2640 atomic_set(&cqp_request->refcount, 2);
8294f297 2641 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 2642
2643 /* Wait for CQP */
2644 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2645 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2646 NES_EVENT_TIMEOUT);
2647 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2648 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2649 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2650
2651 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2652 (ib_mr->rkey & 0x0fffff00) >> 8);
2653
2654 kfree(nesmr);
2655
2656 major_code = cqp_request->major_code;
2657 minor_code = cqp_request->minor_code;
1ff66e8c
RD		 2658
2659 nes_put_cqp_request(nesdev, cqp_request);
2660
3c2d774c
GS		 2661 if (!ret) {
2662 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2663 " ib_mr=%p, rkey = 0x%08X\n",
2664 ib_mr, ib_mr->rkey);
2665 return -ETIME;
2666 } else if (major_code) {
2667 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2668 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2669 major_code, minor_code, ib_mr, ib_mr->rkey);
2670 return -EIO;
2671 } else
2672 return 0;
2673}
2674
2675
2676/**
2677 * show_rev
2678 */
f4e91eb4
TJ		 2679static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2680 char *buf)
3c2d774c
GS		 2681{
2682 struct nes_ib_device *nesibdev =
f4e91eb4 2683 container_of(dev, struct nes_ib_device, ibdev.dev);
3c2d774c
GS		 2684 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2685
2686 nes_debug(NES_DBG_INIT, "\n");
2687 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2688}
2689
2690
2691/**
2692 * show_fw_ver
2693 */
f4e91eb4
TJ		 2694static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2695 char *buf)
3c2d774c
GS		 2696{
2697 struct nes_ib_device *nesibdev =
f4e91eb4 2698 container_of(dev, struct nes_ib_device, ibdev.dev);
3c2d774c
GS		 2699 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2700
2701 nes_debug(NES_DBG_INIT, "\n");
2702 return sprintf(buf, "%x.%x.%x\n",
2703 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 32),
2704 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 16) & 0xffff,
2705 (int)(nesvnic->nesdev->nesadapter->fw_ver & 0xffff));
2706}
2707
2708
2709/**
2710 * show_hca
2711 */
f4e91eb4
TJ		 2712static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2713 char *buf)
3c2d774c
GS		 2714{
2715 nes_debug(NES_DBG_INIT, "\n");
2716 return sprintf(buf, "NES020\n");
2717}
2718
2719
2720/**
2721 * show_board
2722 */
f4e91eb4
TJ		 2723static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2724 char *buf)
3c2d774c
GS		 2725{
2726 nes_debug(NES_DBG_INIT, "\n");
2727 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2728}
2729
2730
f4e91eb4
TJ		 2731static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2732static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2733static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2734static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
3c2d774c 2735
f4e91eb4
TJ		 2736static struct device_attribute *nes_dev_attributes[] = {
2737 &dev_attr_hw_rev,
2738 &dev_attr_fw_ver,
2739 &dev_attr_hca_type,
2740 &dev_attr_board_id
3c2d774c
GS		 2741};
2742
2743
2744/**
2745 * nes_query_qp
2746 */
2747static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2748 int attr_mask, struct ib_qp_init_attr *init_attr)
2749{
2750 struct nes_qp *nesqp = to_nesqp(ibqp);
2751
2752 nes_debug(NES_DBG_QP, "\n");
2753
2754 attr->qp_access_flags = 0;
2755 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2756 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2757 attr->cap.max_recv_sge = 1;
2758 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2759 init_attr->cap.max_inline_data = 0;
2760 } else {
2761 init_attr->cap.max_inline_data = 64;
2762 }
2763
2764 init_attr->event_handler = nesqp->ibqp.event_handler;
2765 init_attr->qp_context = nesqp->ibqp.qp_context;
2766 init_attr->send_cq = nesqp->ibqp.send_cq;
2767 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2768 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2769 init_attr->cap = attr->cap;
2770
2771 return 0;
2772}
2773
2774
2775/**
2776 * nes_hw_modify_qp
2777 */
2778int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2779 u32 next_iwarp_state, u32 wait_completion)
2780{
2781 struct nes_hw_cqp_wqe *cqp_wqe;
2782 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2783 /* struct iw_cm_event cm_event; */
2784 struct nes_cqp_request *cqp_request;
3c2d774c
GS		 2785 int ret;
2786 u16 major_code;
2787
2788 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2789 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2790
2791 cqp_request = nes_get_cqp_request(nesdev);
2792 if (cqp_request == NULL) {
2793 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2794 return -ENOMEM;
2795 }
2796 if (wait_completion) {
2797 cqp_request->waiting = 1;
2798 } else {
2799 cqp_request->waiting = 0;
2800 }
2801 cqp_wqe = &cqp_request->cqp_wqe;
2802
2803 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2804 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2805 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2806 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2807 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2808 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2809 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2810
2811 atomic_set(&cqp_request->refcount, 2);
8294f297 2812 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 2813
2814 /* Wait for CQP */
2815 if (wait_completion) {
2816 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2817 nesqp->hwqp.qp_id); */
2818 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2819 NES_EVENT_TIMEOUT);
2820 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2821 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2822 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2823 major_code = cqp_request->major_code;
2824 if (major_code) {
2825 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2826 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2827 nesqp->hwqp.qp_id, cqp_request->major_code,
2828 cqp_request->minor_code, next_iwarp_state);
2829 }
1ff66e8c
RD		 2830
2831 nes_put_cqp_request(nesdev, cqp_request);
2832
3c2d774c
GS		 2833 if (!ret)
2834 return -ETIME;
2835 else if (major_code)
2836 return -EIO;
2837 else
2838 return 0;
2839 } else {
2840 return 0;
2841 }
2842}
2843
2844
2845/**
2846 * nes_modify_qp
2847 */
2848int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2849 int attr_mask, struct ib_udata *udata)
2850{
2851 struct nes_qp *nesqp = to_nesqp(ibqp);
2852 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2853 struct nes_device *nesdev = nesvnic->nesdev;
2854 /* u32 cqp_head; */
2855 /* u32 counter; */
2856 u32 next_iwarp_state = 0;
2857 int err;
2858 unsigned long qplockflags;
2859 int ret;
2860 u16 original_last_aeq;
2861 u8 issue_modify_qp = 0;
2862 u8 issue_disconnect = 0;
2863 u8 dont_wait = 0;
2864
2865 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2866 " iwarp_state=0x%X, refcount=%d\n",
2867 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2868 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2869
2870 nes_add_ref(&nesqp->ibqp);
2871 spin_lock_irqsave(&nesqp->lock, qplockflags);
2872
2873 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2874 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2875 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2876 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2877
2878 if (attr_mask & IB_QP_STATE) {
2879 switch (attr->qp_state) {
2880 case IB_QPS_INIT:
2881 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2882 nesqp->hwqp.qp_id);
2883 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2884 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2885 nes_rem_ref(&nesqp->ibqp);
2886 return -EINVAL;
2887 }
2888 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2889 issue_modify_qp = 1;
2890 break;
2891 case IB_QPS_RTR:
2892 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2893 nesqp->hwqp.qp_id);
2894 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2895 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2896 nes_rem_ref(&nesqp->ibqp);
2897 return -EINVAL;
2898 }
2899 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2900 issue_modify_qp = 1;
2901 break;
2902 case IB_QPS_RTS:
2903 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2904 nesqp->hwqp.qp_id);
2905 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2906 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2907 nes_rem_ref(&nesqp->ibqp);
2908 return -EINVAL;
2909 }
2910 if (nesqp->cm_id == NULL) {
2911 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2912 nesqp->hwqp.qp_id );
2913 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2914 nes_rem_ref(&nesqp->ibqp);
2915 return -EINVAL;
2916 }
2917 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2918 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2919 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2920 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2921 issue_modify_qp = 1;
2922 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2923 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2924 nesqp->hte_added = 1;
2925 break;
2926 case IB_QPS_SQD:
2927 issue_modify_qp = 1;
2928 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2929 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2930 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2931 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2932 nes_rem_ref(&nesqp->ibqp);
2933 return 0;
2934 } else {
2935 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2936 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2937 " ignored due to current iWARP state\n",
2938 nesqp->hwqp.qp_id);
2939 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2940 nes_rem_ref(&nesqp->ibqp);
2941 return -EINVAL;
2942 }
2943 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
2944 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2945 " already done based on hw state.\n",
2946 nesqp->hwqp.qp_id);
2947 issue_modify_qp = 0;
2948 nesqp->in_disconnect = 0;
2949 }
2950 switch (nesqp->hw_iwarp_state) {
2951 case NES_AEQE_IWARP_STATE_CLOSING:
2952 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2953 case NES_AEQE_IWARP_STATE_TERMINATE:
2954 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2955 break;
2956 case NES_AEQE_IWARP_STATE_ERROR:
2957 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2958 break;
2959 default:
2960 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2961 nesqp->in_disconnect = 1;
2962 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
2963 break;
2964 }
2965 }
2966 break;
2967 case IB_QPS_SQE:
2968 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
2969 nesqp->hwqp.qp_id);
2970 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
2971 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2972 nes_rem_ref(&nesqp->ibqp);
2973 return -EINVAL;
2974 }
2975 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2976 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2977 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
2978 issue_modify_qp = 1;
2979 nesqp->in_disconnect = 1;
2980 break;
2981 case IB_QPS_ERR:
2982 case IB_QPS_RESET:
2983 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
2984 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2985 nes_rem_ref(&nesqp->ibqp);
2986 return -EINVAL;
2987 }
2988 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
2989 nesqp->hwqp.qp_id);
2990 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2991 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2992 if (nesqp->hte_added) {
2993 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
2994 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
2995 nesqp->hte_added = 0;
2996 }
2997 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
2998 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
2999 next_iwarp_state |= NES_CQP_QP_RESET;
3000 nesqp->in_disconnect = 1;
3001 } else {
3002 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3003 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3004 dont_wait = 1;
3005 }
3006 issue_modify_qp = 1;
3007 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3008 break;
3009 default:
3010 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3011 nes_rem_ref(&nesqp->ibqp);
3012 return -EINVAL;
3013 break;
3014 }
3015
3016 nesqp->ibqp_state = attr->qp_state;
3017 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3018 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3019 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3020 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3021 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3022 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3023 nesqp->iwarp_state);
3024 issue_disconnect = 1;
3025 } else {
3026 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3027 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3028 nesqp->iwarp_state);
3029 }
3030 }
3031
3032 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3033 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3034 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3035 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3036 issue_modify_qp = 1;
3037 }
3038 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3039 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3040 issue_modify_qp = 1;
3041 }
3042 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3043 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3044 issue_modify_qp = 1;
3045 }
3046 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3047 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3048 issue_modify_qp = 1;
3049 }
3050
3051 if (nesqp->user_mode) {
3052 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3053 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3054 issue_modify_qp = 1;
3055 }
3056 }
3057
3058 original_last_aeq = nesqp->last_aeq;
3059 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3060
3061 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3062
3063 ret = 0;
3064
3065
3066 if (issue_modify_qp) {
3067 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3068 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
3069 if (ret)
3070 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3071 " failed for QP%u.\n",
3072 next_iwarp_state, nesqp->hwqp.qp_id);
3073
3074 }
3075
3076 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3077 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3078 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3079 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3080 original_last_aeq, nesqp->last_aeq);
3081 if ((!ret) ||
3082 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3083 (ret))) {
3084 if (dont_wait) {
3085 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3086 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3087 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3088 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3089 original_last_aeq, nesqp->last_aeq);
3090 /* this one is for the cm_disconnect thread */
3091 nes_add_ref(&nesqp->ibqp);
3092 spin_lock_irqsave(&nesqp->lock, qplockflags);
3093 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3094 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3095 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3096 nes_cm_disconn(nesqp);
3097 } else {
3098 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3099 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3100 nes_rem_ref(&nesqp->ibqp);
3101 }
3102 } else {
3103 spin_lock_irqsave(&nesqp->lock, qplockflags);
3104 if (nesqp->cm_id) {
3105 /* These two are for the timer thread */
3106 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3107 nes_add_ref(&nesqp->ibqp);
3108 nesqp->cm_id->add_ref(nesqp->cm_id);
3109 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3110 " need ae to finish up, original_last_aeq = 0x%04X."
3111 " last_aeq = 0x%04X, scheduling timer.\n",
3112 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3113 original_last_aeq, nesqp->last_aeq);
3114 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3115 }
3116 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3117 } else {
3118 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3119 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3120 " need ae to finish up, original_last_aeq = 0x%04X."
3121 " last_aeq = 0x%04X.\n",
3122 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3123 original_last_aeq, nesqp->last_aeq);
3124 }
3125 }
3126 } else {
3127 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3128 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3129 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3130 original_last_aeq, nesqp->last_aeq);
3131 nes_rem_ref(&nesqp->ibqp);
3132 }
3133 } else {
3134 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3135 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3136 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3137 original_last_aeq, nesqp->last_aeq);
3138 nes_rem_ref(&nesqp->ibqp);
3139 }
3140
3141 err = 0;
3142
3143 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3144 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3145
3146 return err;
3147}
3148
3149
3150/**
3151 * nes_muticast_attach
3152 */
3153static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3154{
3155 nes_debug(NES_DBG_INIT, "\n");
3156 return -ENOSYS;
3157}
3158
3159
3160/**
3161 * nes_multicast_detach
3162 */
3163static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3164{
3165 nes_debug(NES_DBG_INIT, "\n");
3166 return -ENOSYS;
3167}
3168
3169
3170/**
3171 * nes_process_mad
3172 */
3173static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3174 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3175 struct ib_mad *in_mad, struct ib_mad *out_mad)
3176{
3177 nes_debug(NES_DBG_INIT, "\n");
3178 return -ENOSYS;
3179}
3180
3181static inline void
3182fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3183{
3184 int sge_index;
3185 int total_payload_length = 0;
3186 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3187 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3188 ib_wr->sg_list[sge_index].addr);
3189 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3190 ib_wr->sg_list[sge_index].length);
3191 if (uselkey)
3192 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3193 (ib_wr->sg_list[sge_index].lkey));
3194 else
3195 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3196
3197 total_payload_length += ib_wr->sg_list[sge_index].length;
3198 }
3199 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3200 total_payload_length);
3201 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3202 total_payload_length);
3203}
3204
3205/**
3206 * nes_post_send
3207 */
3208static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3209 struct ib_send_wr **bad_wr)
3210{
3211 u64 u64temp;
3212 unsigned long flags = 0;
3213 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3214 struct nes_device *nesdev = nesvnic->nesdev;
3215 struct nes_qp *nesqp = to_nesqp(ibqp);
3216 struct nes_hw_qp_wqe *wqe;
3217 int err;
3218 u32 qsize = nesqp->hwqp.sq_size;
3219 u32 head;
3220 u32 wqe_misc;
3221 u32 wqe_count;
3222 u32 counter;
3223 u32 total_payload_length;
3224
3225 err = 0;
3226 wqe_misc = 0;
3227 wqe_count = 0;
3228 total_payload_length = 0;
3229
3230 if (nesqp->ibqp_state > IB_QPS_RTS)
3231 return -EINVAL;
3232
3233 spin_lock_irqsave(&nesqp->lock, flags);
3234
3235 head = nesqp->hwqp.sq_head;
3236
3237 while (ib_wr) {
3238 /* Check for SQ overflow */
3239 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3240 err = -EINVAL;
3241 break;
3242 }
3243
3244 wqe = &nesqp->hwqp.sq_vbase[head];
3245 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3246 nesqp->hwqp.qp_id, wqe, head); */
3247 nes_fill_init_qp_wqe(wqe, nesqp, head);
3248 u64temp = (u64)(ib_wr->wr_id);
3249 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3250 u64temp);
3251 switch (ib_wr->opcode) {
3252 case IB_WR_SEND:
3253 if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3254 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3255 } else {
3256 wqe_misc = NES_IWARP_SQ_OP_SEND;
3257 }
3258 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3259 err = -EINVAL;
3260 break;
3261 }
3262 if (ib_wr->send_flags & IB_SEND_FENCE) {
3263 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3264 }
3265 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3266 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3267 (ib_wr->sg_list[0].length <= 64)) {
3268 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3269 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3270 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3271 ib_wr->sg_list[0].length);
3272 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3273 } else {
3274 fill_wqe_sg_send(wqe, ib_wr, 1);
3275 }
3276
3277 break;
3278 case IB_WR_RDMA_WRITE:
3279 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3280 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3281 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3282 ib_wr->num_sge,
3283 nesdev->nesadapter->max_sge);
3284 err = -EINVAL;
3285 break;
3286 }
3287 if (ib_wr->send_flags & IB_SEND_FENCE) {
3288 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3289 }
3290
3291 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3292 ib_wr->wr.rdma.rkey);
3293 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3294 ib_wr->wr.rdma.remote_addr);
3295
3296 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3297 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3298 (ib_wr->sg_list[0].length <= 64)) {
3299 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3300 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3301 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3302 ib_wr->sg_list[0].length);
3303 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3304 } else {
3305 fill_wqe_sg_send(wqe, ib_wr, 1);
3306 }
3307 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3308 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3309 break;
3310 case IB_WR_RDMA_READ:
3311 /* iWARP only supports 1 sge for RDMA reads */
3312 if (ib_wr->num_sge > 1) {
3313 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3314 ib_wr->num_sge);
3315 err = -EINVAL;
3316 break;
3317 }
3318 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3319 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3320 ib_wr->wr.rdma.remote_addr);
3321 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3322 ib_wr->wr.rdma.rkey);
3323 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3324 ib_wr->sg_list->length);
3325 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3326 ib_wr->sg_list->addr);
3327 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3328 ib_wr->sg_list->lkey);
3329 break;
3330 default:
3331 /* error */
3332 err = -EINVAL;
3333 break;
3334 }
3335
3336 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3337 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3338 }
3339 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3340
3341 ib_wr = ib_wr->next;
3342 head++;
3343 wqe_count++;
3344 if (head >= qsize)
3345 head = 0;
3346
3347 }
3348
3349 nesqp->hwqp.sq_head = head;
3350 barrier();
3351 while (wqe_count) {
3352 counter = min(wqe_count, ((u32)255));
3353 wqe_count -= counter;
3354 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3355 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3356 }
3357
3358 spin_unlock_irqrestore(&nesqp->lock, flags);
3359
3360 if (err)
3361 *bad_wr = ib_wr;
3362 return err;
3363}
3364
3365
3366/**
3367 * nes_post_recv
3368 */
3369static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3370 struct ib_recv_wr **bad_wr)
3371{
3372 u64 u64temp;
3373 unsigned long flags = 0;
3374 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3375 struct nes_device *nesdev = nesvnic->nesdev;
3376 struct nes_qp *nesqp = to_nesqp(ibqp);
3377 struct nes_hw_qp_wqe *wqe;
3378 int err = 0;
3379 int sge_index;
3380 u32 qsize = nesqp->hwqp.rq_size;
3381 u32 head;
3382 u32 wqe_count = 0;
3383 u32 counter;
3384 u32 total_payload_length;
3385
3386 if (nesqp->ibqp_state > IB_QPS_RTS)
3387 return -EINVAL;
3388
3389 spin_lock_irqsave(&nesqp->lock, flags);
3390
3391 head = nesqp->hwqp.rq_head;
3392
3393 while (ib_wr) {
3394 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3395 err = -EINVAL;
3396 break;
3397 }
3398 /* Check for RQ overflow */
3399 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3400 err = -EINVAL;
3401 break;
3402 }
3403
3404 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3405 wqe = &nesqp->hwqp.rq_vbase[head];
3406
3407 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3408 nesqp->hwqp.qp_id, wqe, head); */
3409 nes_fill_init_qp_wqe(wqe, nesqp, head);
3410 u64temp = (u64)(ib_wr->wr_id);
3411 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3412 u64temp);
3413 total_payload_length = 0;
3414 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3415 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3416 ib_wr->sg_list[sge_index].addr);
3417 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3418 ib_wr->sg_list[sge_index].length);
3419 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3420 ib_wr->sg_list[sge_index].lkey);
3421
3422 total_payload_length += ib_wr->sg_list[sge_index].length;
3423 }
3424 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3425 total_payload_length);
3426
3427 ib_wr = ib_wr->next;
3428 head++;
3429 wqe_count++;
3430 if (head >= qsize)
3431 head = 0;
3432 }
3433
3434 nesqp->hwqp.rq_head = head;
3435 barrier();
3436 while (wqe_count) {
3437 counter = min(wqe_count, ((u32)255));
3438 wqe_count -= counter;
3439 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3440 }
3441
3442 spin_unlock_irqrestore(&nesqp->lock, flags);
3443
3444 if (err)
3445 *bad_wr = ib_wr;
3446 return err;
3447}
3448
3449
3450/**
3451 * nes_poll_cq
3452 */
3453static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3454{
3455 u64 u64temp;
3456 u64 wrid;
3457 /* u64 u64temp; */
3458 unsigned long flags = 0;
3459 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3460 struct nes_device *nesdev = nesvnic->nesdev;
3461 struct nes_cq *nescq = to_nescq(ibcq);
3462 struct nes_qp *nesqp;
3463 struct nes_hw_cqe cqe;
3464 u32 head;
3465 u32 wq_tail;
3466 u32 cq_size;
3467 u32 cqe_count = 0;
3468 u32 wqe_index;
3469 u32 u32temp;
3470 /* u32 counter; */
3471
3472 nes_debug(NES_DBG_CQ, "\n");
3473
3474 spin_lock_irqsave(&nescq->lock, flags);
3475
3476 head = nescq->hw_cq.cq_head;
3477 cq_size = nescq->hw_cq.cq_size;
3478
3479 while (cqe_count < num_entries) {
3480 if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3481 NES_CQE_VALID) {
31d1e340
RD		 3482 /*
3483 * Make sure we read CQ entry contents *after*
3484 * we've checked the valid bit.
3485 */
3486 rmb();
3487
3c2d774c
GS		 3488 cqe = nescq->hw_cq.cq_vbase[head];
3489 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3490 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3491 wqe_index = u32temp &
3492 (nesdev->nesadapter->max_qp_wr - 1);
3493 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3494 /* parse CQE, get completion context from WQE (either rq or sq */
3495 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3496 ((u64)u32temp);
3497 nesqp = *((struct nes_qp **)&u64temp);
3498 memset(entry, 0, sizeof *entry);
3499 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3500 entry->status = IB_WC_SUCCESS;
3501 } else {
3502 entry->status = IB_WC_WR_FLUSH_ERR;
3503 }
3504
3505 entry->qp = &nesqp->ibqp;
3506 entry->src_qp = nesqp->hwqp.qp_id;
3507
3508 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3509 if (nesqp->skip_lsmm) {
3510 nesqp->skip_lsmm = 0;
3511 wq_tail = nesqp->hwqp.sq_tail++;
3512 }
3513
3514 /* Working on a SQ Completion*/
3515 wq_tail = wqe_index;
3516 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3517 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3518 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3519 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3520 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3521 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3522 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3523
3524 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3525 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3526 case NES_IWARP_SQ_OP_RDMAW:
3527 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3528 entry->opcode = IB_WC_RDMA_WRITE;
3529 break;
3530 case NES_IWARP_SQ_OP_RDMAR:
3531 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3532 entry->opcode = IB_WC_RDMA_READ;
3533 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3534 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3535 break;
3536 case NES_IWARP_SQ_OP_SENDINV:
3537 case NES_IWARP_SQ_OP_SENDSEINV:
3538 case NES_IWARP_SQ_OP_SEND:
3539 case NES_IWARP_SQ_OP_SENDSE:
3540 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3541 entry->opcode = IB_WC_SEND;
3542 break;
3543 }
3544 } else {
3545 /* Working on a RQ Completion*/
3546 wq_tail = wqe_index;
3547 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3548 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3549 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3550 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3551 entry->opcode = IB_WC_RECV;
3552 }
3553 entry->wr_id = wrid;
3554
3555 if (++head >= cq_size)
3556 head = 0;
3557 cqe_count++;
3558 nescq->polled_completions++;
3559 if ((nescq->polled_completions > (cq_size / 2)) ||
3560 (nescq->polled_completions == 255)) {
3561 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3562 " are pending %u of %u.\n",
3563 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3564 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3565 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3566 nescq->polled_completions = 0;
3567 }
3568 entry++;
3569 } else
3570 break;
3571 }
3572
3573 if (nescq->polled_completions) {
3574 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3575 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3576 nescq->polled_completions = 0;
3577 }
3578
3579 nescq->hw_cq.cq_head = head;
3580 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3581 cqe_count, nescq->hw_cq.cq_number);
3582
3583 spin_unlock_irqrestore(&nescq->lock, flags);
3584
3585 return cqe_count;
3586}
3587
3588
3589/**
3590 * nes_req_notify_cq
3591 */
3592static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3593 {
3594 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3595 struct nes_device *nesdev = nesvnic->nesdev;
3596 struct nes_cq *nescq = to_nescq(ibcq);
3597 u32 cq_arm;
3598
3599 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3600 nescq->hw_cq.cq_number);
3601
3602 cq_arm = nescq->hw_cq.cq_number;
3603 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3604 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3605 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3606 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3607 else
3608 return -EINVAL;
3609
3610 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3611 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3612
3613 return 0;
3614}
3615
3616
3617/**
3618 * nes_init_ofa_device
3619 */
3620struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3621{
3622 struct nes_ib_device *nesibdev;
3623 struct nes_vnic *nesvnic = netdev_priv(netdev);
3624 struct nes_device *nesdev = nesvnic->nesdev;
3625
3626 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3627 if (nesibdev == NULL) {
3628 return NULL;
3629 }
3630 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3631 nesibdev->ibdev.owner = THIS_MODULE;
3632
3633 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3634 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3635 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3636
3637 nesibdev->ibdev.uverbs_cmd_mask =
3638 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3639 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3640 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3641 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3642 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3643 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3644 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3645 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3646 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3647 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3648 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3649 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3650 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3651 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3652 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3653 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3654 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3655 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3656 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3657 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3658 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3659 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3660
3661 nesibdev->ibdev.phys_port_cnt = 1;
3662 nesibdev->ibdev.num_comp_vectors = 1;
3663 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
f4e91eb4 3664 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3c2d774c
GS		 3665 nesibdev->ibdev.query_device = nes_query_device;
3666 nesibdev->ibdev.query_port = nes_query_port;
3667 nesibdev->ibdev.modify_port = nes_modify_port;
3668 nesibdev->ibdev.query_pkey = nes_query_pkey;
3669 nesibdev->ibdev.query_gid = nes_query_gid;
3670 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3671 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3672 nesibdev->ibdev.mmap = nes_mmap;
3673 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3674 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3675 nesibdev->ibdev.create_ah = nes_create_ah;
3676 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3677 nesibdev->ibdev.create_qp = nes_create_qp;
3678 nesibdev->ibdev.modify_qp = nes_modify_qp;
3679 nesibdev->ibdev.query_qp = nes_query_qp;
3680 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3681 nesibdev->ibdev.create_cq = nes_create_cq;
3682 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3683 nesibdev->ibdev.poll_cq = nes_poll_cq;
3684 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3685 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3686 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3687 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3688 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3689 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3690 nesibdev->ibdev.bind_mw = nes_bind_mw;
3691
3692 nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3693 nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3694 nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3695 nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3696
3697 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3698 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3699 nesibdev->ibdev.process_mad = nes_process_mad;
3700
3701 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3702 nesibdev->ibdev.post_send = nes_post_send;
3703 nesibdev->ibdev.post_recv = nes_post_recv;
3704
3705 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3706 if (nesibdev->ibdev.iwcm == NULL) {
3707 ib_dealloc_device(&nesibdev->ibdev);
3708 return NULL;
3709 }
3710 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3711 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3712 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3713 nesibdev->ibdev.iwcm->connect = nes_connect;
3714 nesibdev->ibdev.iwcm->accept = nes_accept;
3715 nesibdev->ibdev.iwcm->reject = nes_reject;
3716 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3717 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3718
3719 return nesibdev;
3720}
3721
3722
3723/**
3724 * nes_destroy_ofa_device
3725 */
3726void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3727{
3728 if (nesibdev == NULL)
3729 return;
3730
3731 nes_unregister_ofa_device(nesibdev);
3732
3733 kfree(nesibdev->ibdev.iwcm);
3734 ib_dealloc_device(&nesibdev->ibdev);
3735}
3736
3737
3738/**
3739 * nes_register_ofa_device
3740 */
3741int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3742{
3743 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3744 struct nes_device *nesdev = nesvnic->nesdev;
3745 struct nes_adapter *nesadapter = nesdev->nesadapter;
3746 int i, ret;
3747
3748 ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3749 if (ret) {
3750 return ret;
3751 }
3752
3753 /* Get the resources allocated to this device */
3754 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3755 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3756 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3757 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3758
f4e91eb4
TJ		 3759 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3760 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3c2d774c
GS		 3761 if (ret) {
3762 while (i > 0) {
3763 i--;
f4e91eb4
TJ		 3764 device_remove_file(&nesibdev->ibdev.dev,
3765 nes_dev_attributes[i]);
3c2d774c
GS		 3766 }
3767 ib_unregister_device(&nesibdev->ibdev);
3768 return ret;
3769 }
3770 }
3771
3772 nesvnic->of_device_registered = 1;
3773
3774 return 0;
3775}
3776
3777
3778/**
3779 * nes_unregister_ofa_device
3780 */
1a855fbf 3781static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3c2d774c
GS		 3782{
3783 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3784 int i;
3785
f4e91eb4
TJ		 3786 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3787 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3c2d774c
GS		 3788 }
3789
3790 if (nesvnic->of_device_registered) {
3791 ib_unregister_device(&nesibdev->ibdev);
3792 }
3793
3794 nesvnic->of_device_registered = 0;
3795}
Linux 6.x block layer and io_uring tree(s)