2 * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
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>
40 #include <rdma/ib_verbs.h>
41 #include <rdma/iw_cm.h>
42 #include <rdma/ib_user_verbs.h>
46 #include <rdma/ib_umem.h>
48 atomic_t mod_qp_timouts;
50 atomic_t sw_qps_destroyed;
52 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
57 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
59 struct nes_pd *nespd = to_nespd(ibpd);
60 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
61 struct nes_device *nesdev = nesvnic->nesdev;
62 struct nes_adapter *nesadapter = nesdev->nesadapter;
63 struct nes_cqp_request *cqp_request;
66 struct nes_hw_cqp_wqe *cqp_wqe;
70 u32 next_stag_index = 0;
74 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
75 stag_key = (u8)next_stag_index;
79 next_stag_index >>= 8;
80 next_stag_index %= nesadapter->max_mr;
82 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
83 nesadapter->max_mr, &stag_index, &next_stag_index);
88 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
90 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
91 return ERR_PTR(-ENOMEM);
94 stag = stag_index << 8;
96 stag += (u32)stag_key;
98 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
101 /* Register the region with the adapter */
102 cqp_request = nes_get_cqp_request(nesdev);
103 if (cqp_request == NULL) {
105 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
106 return ERR_PTR(-ENOMEM);
109 cqp_request->waiting = 1;
110 cqp_wqe = &cqp_request->cqp_wqe;
112 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
113 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
114 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
115 NES_CQP_STAG_REM_ACC_EN);
117 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
119 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
121 atomic_set(&cqp_request->refcount, 2);
122 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
125 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
127 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
128 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
129 stag, ret, cqp_request->major_code, cqp_request->minor_code);
130 if ((!ret) || (cqp_request->major_code)) {
131 if (atomic_dec_and_test(&cqp_request->refcount)) {
132 if (cqp_request->dynamic) {
135 spin_lock_irqsave(&nesdev->cqp.lock, flags);
136 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
137 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
141 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
143 return ERR_PTR(-ETIME);
145 return ERR_PTR(-ENOMEM);
148 if (atomic_dec_and_test(&cqp_request->refcount)) {
149 if (cqp_request->dynamic) {
152 spin_lock_irqsave(&nesdev->cqp.lock, flags);
153 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
154 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
159 nesmr->ibmw.rkey = stag;
160 nesmr->mode = IWNES_MEMREG_TYPE_MW;
163 nesmr->pbls_used = 0;
172 static int nes_dealloc_mw(struct ib_mw *ibmw)
174 struct nes_mr *nesmr = to_nesmw(ibmw);
175 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
176 struct nes_device *nesdev = nesvnic->nesdev;
177 struct nes_adapter *nesadapter = nesdev->nesadapter;
178 struct nes_hw_cqp_wqe *cqp_wqe;
179 struct nes_cqp_request *cqp_request;
184 /* Deallocate the window with the adapter */
185 cqp_request = nes_get_cqp_request(nesdev);
186 if (cqp_request == NULL) {
187 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
190 cqp_request->waiting = 1;
191 cqp_wqe = &cqp_request->cqp_wqe;
192 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
193 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
194 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
196 atomic_set(&cqp_request->refcount, 2);
197 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
200 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
202 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
204 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
205 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
206 ret, cqp_request->major_code, cqp_request->minor_code);
207 if ((!ret) || (cqp_request->major_code)) {
208 if (atomic_dec_and_test(&cqp_request->refcount)) {
209 if (cqp_request->dynamic) {
212 spin_lock_irqsave(&nesdev->cqp.lock, flags);
213 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
214 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
223 if (atomic_dec_and_test(&cqp_request->refcount)) {
224 if (cqp_request->dynamic) {
227 spin_lock_irqsave(&nesdev->cqp.lock, flags);
228 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
229 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
234 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
235 (ibmw->rkey & 0x0fffff00) >> 8);
245 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
246 struct ib_mw_bind *ibmw_bind)
249 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
250 struct nes_device *nesdev = nesvnic->nesdev;
251 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
252 struct nes_qp *nesqp = to_nesqp(ibqp);
253 struct nes_hw_qp_wqe *wqe;
254 unsigned long flags = 0;
259 if (nesqp->ibqp_state > IB_QPS_RTS)
262 spin_lock_irqsave(&nesqp->lock, flags);
264 head = nesqp->hwqp.sq_head;
265 qsize = nesqp->hwqp.sq_tail;
267 /* Check for SQ overflow */
268 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
269 spin_unlock_irqrestore(&nesqp->lock, flags);
273 wqe = &nesqp->hwqp.sq_vbase[head];
274 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
275 nes_fill_init_qp_wqe(wqe, nesqp, head);
276 u64temp = ibmw_bind->wr_id;
277 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
278 wqe_misc = NES_IWARP_SQ_OP_BIND;
280 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
282 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
283 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
285 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
286 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
288 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
289 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
292 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
293 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
294 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
295 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
297 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
298 u64temp = (u64)ibmw_bind->addr;
299 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
305 nesqp->hwqp.sq_head = head;
308 nes_write32(nesdev->regs+NES_WQE_ALLOC,
309 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
311 spin_unlock_irqrestore(&nesqp->lock, flags);
320 static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
321 int ibmr_access_flags,
322 struct ib_fmr_attr *ibfmr_attr)
325 struct nes_pd *nespd = to_nespd(ibpd);
326 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
327 struct nes_device *nesdev = nesvnic->nesdev;
328 struct nes_adapter *nesadapter = nesdev->nesadapter;
329 struct nes_fmr *nesfmr;
330 struct nes_cqp_request *cqp_request;
331 struct nes_hw_cqp_wqe *cqp_wqe;
335 u32 next_stag_index = 0;
340 struct nes_vpbl vpbl;
342 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
343 stag_key = (u8)next_stag_index;
347 next_stag_index >>= 8;
348 next_stag_index %= nesadapter->max_mr;
350 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
351 nesadapter->max_mr, &stag_index, &next_stag_index);
353 goto failed_resource_alloc;
356 nesfmr = kzalloc(sizeof(*nesfmr), GFP_KERNEL);
359 goto failed_fmr_alloc;
362 nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR;
363 if (ibfmr_attr->max_pages == 1) {
364 /* use zero length PBL */
365 nesfmr->nesmr.pbl_4k = 0;
366 nesfmr->nesmr.pbls_used = 0;
367 } else if (ibfmr_attr->max_pages <= 32) {
369 nesfmr->nesmr.pbl_4k = 0;
370 nesfmr->nesmr.pbls_used = 1;
371 } else if (ibfmr_attr->max_pages <= 512) {
373 nesfmr->nesmr.pbl_4k = 1;
374 nesfmr->nesmr.pbls_used = 1;
376 /* use two level 4K PBLs */
377 /* add support for two level 256B PBLs */
378 nesfmr->nesmr.pbl_4k = 1;
379 nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages >> 9) +
380 ((ibfmr_attr->max_pages & 511) ? 1 : 0);
382 /* Register the region with the adapter */
383 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
385 /* track PBL resources */
386 if (nesfmr->nesmr.pbls_used != 0) {
387 if (nesfmr->nesmr.pbl_4k) {
388 if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
389 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
391 goto failed_vpbl_alloc;
393 nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
396 if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
397 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
399 goto failed_vpbl_alloc;
401 nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
407 if (nesfmr->nesmr.pbls_used == 0) {
408 nesfmr->root_vpbl.pbl_vbase = NULL;
409 nes_debug(NES_DBG_MR, "zero level pbl \n");
410 } else if (nesfmr->nesmr.pbls_used == 1) {
411 /* can change it to kmalloc & dma_map_single */
412 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
413 &nesfmr->root_vpbl.pbl_pbase);
414 if (!nesfmr->root_vpbl.pbl_vbase) {
415 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
417 goto failed_vpbl_alloc;
419 nesfmr->leaf_pbl_cnt = 0;
420 nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n",
421 nesfmr->root_vpbl.pbl_vbase);
425 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
426 &nesfmr->root_vpbl.pbl_pbase);
427 if (!nesfmr->root_vpbl.pbl_vbase) {
428 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
430 goto failed_vpbl_alloc;
433 nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
434 if (!nesfmr->root_vpbl.leaf_vpbl) {
435 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
437 goto failed_leaf_vpbl_alloc;
440 nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
441 nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
442 " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
443 nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
445 for (i=0; i<nesfmr->leaf_pbl_cnt; i++)
446 nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL;
448 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
449 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
452 if (!vpbl.pbl_vbase) {
454 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
455 goto failed_leaf_vpbl_pages_alloc;
458 nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
459 nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
460 nesfmr->root_vpbl.leaf_vpbl[i] = vpbl;
462 nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n",
463 nesfmr->root_vpbl.pbl_vbase[i].pa_low,
464 nesfmr->root_vpbl.pbl_vbase[i].pa_high,
465 &nesfmr->root_vpbl.leaf_vpbl[i]);
468 nesfmr->ib_qp = NULL;
469 nesfmr->access_rights =0;
471 stag = stag_index << 8;
473 stag += (u32)stag_key;
475 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
476 cqp_request = nes_get_cqp_request(nesdev);
477 if (cqp_request == NULL) {
478 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
480 goto failed_leaf_vpbl_pages_alloc;
482 cqp_request->waiting = 1;
483 cqp_wqe = &cqp_request->cqp_wqe;
485 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
488 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
490 if (nesfmr->nesmr.pbl_4k == 1)
491 opcode |= NES_CQP_STAG_PBL_BLK_SIZE;
493 if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) {
494 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE |
495 NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN;
496 nesfmr->access_rights |=
497 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE |
498 NES_CQP_STAG_REM_ACC_EN;
501 if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) {
502 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ |
503 NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN;
504 nesfmr->access_rights |=
505 NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ |
506 NES_CQP_STAG_REM_ACC_EN;
509 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
510 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
511 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
512 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
514 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] =
515 cpu_to_le32((nesfmr->nesmr.pbls_used>1) ?
516 (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used);
518 atomic_set(&cqp_request->refcount, 2);
519 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
522 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
524 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
525 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
526 stag, ret, cqp_request->major_code, cqp_request->minor_code);
528 if ((!ret) || (cqp_request->major_code)) {
529 if (atomic_dec_and_test(&cqp_request->refcount)) {
530 if (cqp_request->dynamic) {
533 spin_lock_irqsave(&nesdev->cqp.lock, flags);
534 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
535 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
538 ret = (!ret) ? -ETIME : -EIO;
539 goto failed_leaf_vpbl_pages_alloc;
541 if (atomic_dec_and_test(&cqp_request->refcount)) {
542 if (cqp_request->dynamic) {
545 spin_lock_irqsave(&nesdev->cqp.lock, flags);
546 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
547 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
552 nesfmr->nesmr.ibfmr.lkey = stag;
553 nesfmr->nesmr.ibfmr.rkey = stag;
554 nesfmr->attr = *ibfmr_attr;
556 return &nesfmr->nesmr.ibfmr;
558 failed_leaf_vpbl_pages_alloc:
559 /* unroll all allocated pages */
560 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
561 if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) {
562 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
563 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
566 if (nesfmr->root_vpbl.leaf_vpbl)
567 kfree(nesfmr->root_vpbl.leaf_vpbl);
569 failed_leaf_vpbl_alloc:
570 if (nesfmr->leaf_pbl_cnt == 0) {
571 if (nesfmr->root_vpbl.pbl_vbase)
572 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
573 nesfmr->root_vpbl.pbl_pbase);
575 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
576 nesfmr->root_vpbl.pbl_pbase);
582 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
584 failed_resource_alloc:
592 static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
594 struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
595 struct nes_fmr *nesfmr = to_nesfmr(nesmr);
596 struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
597 struct nes_device *nesdev = nesvnic->nesdev;
598 struct nes_mr temp_nesmr = *nesmr;
601 temp_nesmr.ibmw.device = ibfmr->device;
602 temp_nesmr.ibmw.pd = ibfmr->pd;
603 temp_nesmr.ibmw.rkey = ibfmr->rkey;
604 temp_nesmr.ibmw.uobject = NULL;
606 /* free the resources */
607 if (nesfmr->leaf_pbl_cnt == 0) {
608 /* single PBL case */
609 if (nesfmr->root_vpbl.pbl_vbase)
610 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
611 nesfmr->root_vpbl.pbl_pbase);
613 for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
614 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
615 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
617 kfree(nesfmr->root_vpbl.leaf_vpbl);
618 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
619 nesfmr->root_vpbl.pbl_pbase);
622 return nes_dealloc_mw(&temp_nesmr.ibmw);
629 static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
630 int list_len, u64 iova)
639 static int nes_unmap_fmr(struct list_head *ibfmr_list)
649 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
651 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
652 struct nes_device *nesdev = nesvnic->nesdev;
653 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
655 memset(props, 0, sizeof(*props));
656 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
658 props->fw_ver = nesdev->nesadapter->fw_ver;
659 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
660 props->vendor_id = nesdev->nesadapter->vendor_id;
661 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
662 props->hw_ver = nesdev->nesadapter->hw_rev;
663 props->max_mr_size = 0x80000000;
664 props->max_qp = nesibdev->max_qp;
665 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
666 props->max_sge = nesdev->nesadapter->max_sge;
667 props->max_cq = nesibdev->max_cq;
668 props->max_cqe = nesdev->nesadapter->max_cqe - 1;
669 props->max_mr = nesibdev->max_mr;
670 props->max_mw = nesibdev->max_mr;
671 props->max_pd = nesibdev->max_pd;
672 props->max_sge_rd = 1;
673 switch (nesdev->nesadapter->max_irrq_wr) {
675 props->max_qp_rd_atom = 1;
678 props->max_qp_rd_atom = 4;
681 props->max_qp_rd_atom = 16;
684 props->max_qp_rd_atom = 32;
687 props->max_qp_rd_atom = 0;
689 props->max_qp_init_rd_atom = props->max_qp_wr;
690 props->atomic_cap = IB_ATOMIC_NONE;
691 props->max_map_per_fmr = 1;
700 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
702 memset(props, 0, sizeof(*props));
704 props->max_mtu = IB_MTU_2048;
705 props->active_mtu = IB_MTU_2048;
710 props->state = IB_PORT_ACTIVE;
711 props->phys_state = 0;
712 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
713 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
714 props->gid_tbl_len = 1;
715 props->pkey_tbl_len = 1;
716 props->qkey_viol_cntr = 0;
717 props->active_width = IB_WIDTH_4X;
718 props->active_speed = 1;
719 props->max_msg_sz = 0x80000000;
728 static int nes_modify_port(struct ib_device *ibdev, u8 port,
729 int port_modify_mask, struct ib_port_modify *props)
738 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
748 static int nes_query_gid(struct ib_device *ibdev, u8 port,
749 int index, union ib_gid *gid)
751 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
753 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
754 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
761 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
762 * of all objects associated with a particular user-mode client.
764 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
765 struct ib_udata *udata)
767 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
768 struct nes_device *nesdev = nesvnic->nesdev;
769 struct nes_adapter *nesadapter = nesdev->nesadapter;
770 struct nes_alloc_ucontext_req req;
771 struct nes_alloc_ucontext_resp uresp;
772 struct nes_ucontext *nes_ucontext;
773 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
776 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
777 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
778 return ERR_PTR(-EINVAL);
781 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
782 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
783 req.userspace_ver, NES_ABI_USERSPACE_VER);
784 return ERR_PTR(-EINVAL);
788 memset(&uresp, 0, sizeof uresp);
790 uresp.max_qps = nesibdev->max_qp;
791 uresp.max_pds = nesibdev->max_pd;
792 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
793 uresp.virtwq = nesadapter->virtwq;
794 uresp.kernel_ver = NES_ABI_KERNEL_VER;
796 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
798 return ERR_PTR(-ENOMEM);
800 nes_ucontext->nesdev = nesdev;
801 nes_ucontext->mmap_wq_offset = uresp.max_pds;
802 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
803 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
807 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
809 return ERR_PTR(-EFAULT);
812 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
813 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
814 atomic_set(&nes_ucontext->usecnt, 1);
815 return &nes_ucontext->ibucontext;
820 * nes_dealloc_ucontext
822 static int nes_dealloc_ucontext(struct ib_ucontext *context)
824 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
825 /* struct nes_device *nesdev = nesvnic->nesdev; */
826 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
828 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
838 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
841 struct nes_vnic *nesvnic = to_nesvnic(context->device);
842 struct nes_device *nesdev = nesvnic->nesdev;
843 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
844 struct nes_ucontext *nes_ucontext;
845 struct nes_qp *nesqp;
847 nes_ucontext = to_nesucontext(context);
850 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
851 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
852 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
853 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
854 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
855 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
858 nesqp = nes_ucontext->mmap_nesqp[index];
860 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
863 if (remap_pfn_range(vma, vma->vm_start,
864 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
865 vma->vm_end - vma->vm_start,
866 vma->vm_page_prot)) {
867 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
870 vma->vm_private_data = nesqp;
873 index = vma->vm_pgoff;
874 if (!test_bit(index, nes_ucontext->allocated_doorbells))
877 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
878 if (io_remap_pfn_range(vma, vma->vm_start,
879 (nesdev->doorbell_start +
880 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
881 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
883 vma->vm_private_data = nes_ucontext;
894 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
895 struct ib_ucontext *context, struct ib_udata *udata)
897 struct nes_pd *nespd;
898 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
899 struct nes_device *nesdev = nesvnic->nesdev;
900 struct nes_adapter *nesadapter = nesdev->nesadapter;
901 struct nes_ucontext *nesucontext;
902 struct nes_alloc_pd_resp uresp;
906 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
907 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
908 atomic_read(&nesvnic->netdev->refcnt));
910 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
911 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
916 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
918 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
919 return ERR_PTR(-ENOMEM);
922 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
923 nespd, nesvnic->nesibdev->ibdev.name);
925 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
928 nesucontext = to_nesucontext(context);
929 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
930 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
931 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
932 nespd->mmap_db_index, nespd->pd_id);
933 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
934 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
935 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
937 return ERR_PTR(-ENOMEM);
940 uresp.pd_id = nespd->pd_id;
941 uresp.mmap_db_index = nespd->mmap_db_index;
942 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
943 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
945 return ERR_PTR(-EFAULT);
948 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
949 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
950 nesucontext->first_free_db = nespd->mmap_db_index + 1;
953 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
961 static int nes_dealloc_pd(struct ib_pd *ibpd)
963 struct nes_ucontext *nesucontext;
964 struct nes_pd *nespd = to_nespd(ibpd);
965 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
966 struct nes_device *nesdev = nesvnic->nesdev;
967 struct nes_adapter *nesadapter = nesdev->nesadapter;
969 if ((ibpd->uobject) && (ibpd->uobject->context)) {
970 nesucontext = to_nesucontext(ibpd->uobject->context);
971 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
972 nespd->mmap_db_index);
973 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
974 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
975 if (nesucontext->first_free_db > nespd->mmap_db_index) {
976 nesucontext->first_free_db = nespd->mmap_db_index;
980 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
981 nespd->pd_id, nespd);
982 nes_free_resource(nesadapter, nesadapter->allocated_pds,
983 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
993 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
995 return ERR_PTR(-ENOSYS);
1002 static int nes_destroy_ah(struct ib_ah *ah)
1009 * nes_get_encoded_size
1011 static inline u8 nes_get_encoded_size(int *size)
1013 u8 encoded_size = 0;
1017 } else if (*size <= 128) {
1020 } else if (*size <= 512) {
1024 return (encoded_size);
1032 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
1033 struct nes_vnic *nesvnic, int sq_size, int rq_size)
1035 unsigned long flags;
1040 struct nes_device *nesdev = nesvnic->nesdev;
1041 struct nes_adapter *nesadapter = nesdev->nesadapter;
1046 pbl_entries = nespbl->pbl_size >> 3;
1047 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
1048 nespbl->pbl_size, pbl_entries,
1049 (void *)nespbl->pbl_vbase,
1050 (unsigned long) nespbl->pbl_pbase);
1051 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
1052 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
1053 /* the first pbl to be fro the rq_vbase... */
1054 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1055 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1056 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1057 if (!nespbl->page) {
1058 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1063 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1064 nesqp->page = nespbl->page;
1065 if (!nesqp->hwqp.sq_vbase) {
1066 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1071 /* Now to get to sq.. we need to calculate how many */
1072 /* PBL entries were used by the rq.. */
1073 pbl += sq_pbl_entries;
1074 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1075 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1076 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1078 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1079 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1080 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
1081 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1082 if (!nesadapter->free_256pbl) {
1083 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1085 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1086 kunmap(nesqp->page);
1090 nesadapter->free_256pbl--;
1091 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1093 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1094 pblbuffer = nesqp->pbl_vbase;
1095 if (!nesqp->pbl_vbase) {
1096 /* memory allocated during nes_reg_user_mr() */
1097 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1100 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1101 nesadapter->free_256pbl++;
1102 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1103 kunmap(nesqp->page);
1106 memset(nesqp->pbl_vbase, 0, 256);
1107 /* fill in the page address in the pbl buffer.. */
1108 tpbl = pblbuffer + 16;
1109 pbl = (__le64 *)nespbl->pbl_vbase;
1110 while (sq_pbl_entries--)
1113 while (rq_pbl_entries--)
1116 /* done with memory allocated during nes_reg_user_mr() */
1117 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1121 nesqp->qp_mem_size =
1122 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1123 /* Round up to a multiple of a page */
1124 nesqp->qp_mem_size += PAGE_SIZE - 1;
1125 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1127 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1128 &nesqp->hwqp.q2_pbase);
1131 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1132 nesqp->pbl_vbase = NULL;
1133 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1134 nesadapter->free_256pbl++;
1135 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1136 kunmap(nesqp->page);
1139 nesqp->hwqp.q2_vbase = mem;
1141 memset(nesqp->hwqp.q2_vbase, 0, 256);
1142 nesqp->nesqp_context = mem;
1143 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1144 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1153 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1154 int sq_size, int rq_size)
1157 struct nes_device *nesdev = nesvnic->nesdev;
1159 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1160 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1161 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1162 256; /* this is Q2 */
1163 /* Round up to a multiple of a page */
1164 nesqp->qp_mem_size += PAGE_SIZE - 1;
1165 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1167 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1168 &nesqp->hwqp.sq_pbase);
1171 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1172 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1173 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1175 memset(mem, 0, nesqp->qp_mem_size);
1177 nesqp->hwqp.sq_vbase = mem;
1178 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1180 nesqp->hwqp.rq_vbase = mem;
1181 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1182 sizeof(struct nes_hw_qp_wqe) * sq_size;
1183 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1185 nesqp->hwqp.q2_vbase = mem;
1186 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1187 sizeof(struct nes_hw_qp_wqe) * rq_size;
1189 memset(nesqp->hwqp.q2_vbase, 0, 256);
1191 nesqp->nesqp_context = mem;
1192 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1193 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1199 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1201 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1202 struct nes_qp *nesqp, int virt_wqs)
1204 unsigned long flags;
1205 struct nes_adapter *nesadapter = nesdev->nesadapter;
1207 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1208 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1210 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1211 nesadapter->free_256pbl++;
1212 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1213 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1214 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1215 nesqp->pbl_vbase = NULL;
1216 kunmap(nesqp->page);
1224 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1225 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1229 struct nes_pd *nespd = to_nespd(ibpd);
1230 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1231 struct nes_device *nesdev = nesvnic->nesdev;
1232 struct nes_adapter *nesadapter = nesdev->nesadapter;
1233 struct nes_qp *nesqp;
1234 struct nes_cq *nescq;
1235 struct nes_ucontext *nes_ucontext;
1236 struct nes_hw_cqp_wqe *cqp_wqe;
1237 struct nes_cqp_request *cqp_request;
1238 struct nes_create_qp_req req;
1239 struct nes_create_qp_resp uresp;
1240 struct nes_pbl *nespbl = NULL;
1243 /* u32 counter = 0; */
1245 unsigned long flags;
1255 atomic_inc(&qps_created);
1256 switch (init_attr->qp_type) {
1258 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1259 init_attr->cap.max_inline_data = 0;
1261 init_attr->cap.max_inline_data = 64;
1263 sq_size = init_attr->cap.max_send_wr;
1264 rq_size = init_attr->cap.max_recv_wr;
1266 // check if the encoded sizes are OK or not...
1267 sq_encoded_size = nes_get_encoded_size(&sq_size);
1268 rq_encoded_size = nes_get_encoded_size(&rq_size);
1270 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1271 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1273 return ERR_PTR(-EINVAL);
1276 init_attr->cap.max_send_wr = sq_size -2;
1277 init_attr->cap.max_recv_wr = rq_size -1;
1278 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1280 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1281 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1283 return ERR_PTR(ret);
1286 /* Need 512 (actually now 1024) byte alignment on this structure */
1287 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1289 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1290 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1291 return ERR_PTR(-ENOMEM);
1293 u64nesqp = (unsigned long)mem;
1294 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1295 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1296 u64nesqp &= ~u64temp;
1297 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1298 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1299 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1300 nesqp->allocated_buffer = mem;
1303 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1304 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1305 kfree(nesqp->allocated_buffer);
1306 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1309 if (req.user_wqe_buffers) {
1312 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1313 nesqp->user_mode = 1;
1314 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1317 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1318 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1319 list_del(&nespbl->list);
1321 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1322 nespbl, nespbl->user_base);
1327 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1328 (long long unsigned int)req.user_wqe_buffers);
1329 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1330 kfree(nesqp->allocated_buffer);
1331 return ERR_PTR(-EFAULT);
1335 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1336 nesqp->mmap_sq_db_index =
1337 find_next_zero_bit(nes_ucontext->allocated_wqs,
1338 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1339 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1340 nespd->mmap_db_index); */
1341 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1342 nes_debug(NES_DBG_QP,
1343 "db index > max user regions, failing create QP\n");
1344 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1346 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1350 kfree(nesqp->allocated_buffer);
1351 return ERR_PTR(-ENOMEM);
1353 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1354 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1355 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1357 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1358 kfree(nesqp->allocated_buffer);
1359 return ERR_PTR(-EFAULT);
1362 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1363 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1365 nes_debug(NES_DBG_QP,
1366 "error geting qp mem code = %d\n", err);
1367 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1368 kfree(nesqp->allocated_buffer);
1369 return ERR_PTR(-ENOMEM);
1372 nesqp->hwqp.sq_size = sq_size;
1373 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1374 nesqp->hwqp.sq_head = 1;
1375 nesqp->hwqp.rq_size = rq_size;
1376 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1377 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1378 (void *)nesqp->nesqp_context_pbase);
1380 nesqp->hwqp.qp_id = qp_num;
1381 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1382 nesqp->nespd = nespd;
1384 nescq = to_nescq(init_attr->send_cq);
1385 nesqp->nesscq = nescq;
1386 nescq = to_nescq(init_attr->recv_cq);
1387 nesqp->nesrcq = nescq;
1389 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1390 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1391 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1392 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1393 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1394 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1395 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1396 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1397 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1398 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1399 u64temp = (u64)nesqp->hwqp.sq_pbase;
1400 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1401 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1405 u64temp = (u64)nesqp->hwqp.sq_pbase;
1406 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1407 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1408 u64temp = (u64)nesqp->hwqp.rq_pbase;
1409 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1410 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1412 u64temp = (u64)nesqp->pbl_pbase;
1413 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1414 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1417 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1418 nesvnic->next_qp_nic_index,
1419 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1420 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1421 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1422 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1423 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1424 nesvnic->next_qp_nic_index++;
1425 if ((nesvnic->next_qp_nic_index > 3) ||
1426 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1427 nesvnic->next_qp_nic_index = 0;
1429 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1431 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1432 u64temp = (u64)nesqp->hwqp.q2_pbase;
1433 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1434 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1435 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1436 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1437 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1438 ((((u32)nesadapter->max_irrq_wr) <<
1439 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1440 if (disable_mpa_crc) {
1441 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1442 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1447 cqp_request = nes_get_cqp_request(nesdev);
1448 if (cqp_request == NULL) {
1449 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1450 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1451 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1452 kfree(nesqp->allocated_buffer);
1453 return ERR_PTR(-ENOMEM);
1455 cqp_request->waiting = 1;
1456 cqp_wqe = &cqp_request->cqp_wqe;
1459 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1460 NES_CQP_QP_IWARP_STATE_IDLE;
1462 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1463 NES_CQP_QP_IWARP_STATE_IDLE;
1465 opcode |= NES_CQP_QP_CQS_VALID;
1466 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1467 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1468 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1470 u64temp = (u64)nesqp->nesqp_context_pbase;
1471 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1473 atomic_set(&cqp_request->refcount, 2);
1474 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
1477 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1479 ret = wait_event_timeout(cqp_request->waitq,
1480 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1481 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1482 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1483 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1484 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1485 cqp_request->major_code, cqp_request->minor_code);
1486 if ((!ret) || (cqp_request->major_code)) {
1487 if (atomic_dec_and_test(&cqp_request->refcount)) {
1488 if (cqp_request->dynamic) {
1491 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1492 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1493 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1496 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1497 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1498 kfree(nesqp->allocated_buffer);
1500 return ERR_PTR(-ETIME);
1502 return ERR_PTR(-EIO);
1505 if (atomic_dec_and_test(&cqp_request->refcount)) {
1506 if (cqp_request->dynamic) {
1509 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1510 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1511 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1516 if (ibpd->uobject) {
1517 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1518 uresp.actual_sq_size = sq_size;
1519 uresp.actual_rq_size = rq_size;
1520 uresp.qp_id = nesqp->hwqp.qp_id;
1521 uresp.nes_drv_opt = nes_drv_opt;
1522 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1523 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1524 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1525 kfree(nesqp->allocated_buffer);
1526 return ERR_PTR(-EFAULT);
1530 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1531 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1532 spin_lock_init(&nesqp->lock);
1533 init_waitqueue_head(&nesqp->state_waitq);
1534 init_waitqueue_head(&nesqp->kick_waitq);
1535 nes_add_ref(&nesqp->ibqp);
1538 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1539 return ERR_PTR(-EINVAL);
1543 /* update the QP table */
1544 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1545 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1546 atomic_read(&nesvnic->netdev->refcnt));
1548 return &nesqp->ibqp;
1555 static int nes_destroy_qp(struct ib_qp *ibqp)
1557 struct nes_qp *nesqp = to_nesqp(ibqp);
1558 /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
1559 struct nes_ucontext *nes_ucontext;
1560 struct ib_qp_attr attr;
1561 struct iw_cm_id *cm_id;
1562 struct iw_cm_event cm_event;
1565 atomic_inc(&sw_qps_destroyed);
1566 nesqp->destroyed = 1;
1568 /* Blow away the connection if it exists. */
1569 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1570 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1571 attr.qp_state = IB_QPS_ERR;
1572 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1575 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1576 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1577 cm_id = nesqp->cm_id;
1578 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1579 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1580 cm_event.local_addr = cm_id->local_addr;
1581 cm_event.remote_addr = cm_id->remote_addr;
1582 cm_event.private_data = NULL;
1583 cm_event.private_data_len = 0;
1585 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1586 "QP%u. cm_id = %p, refcount = %u. \n",
1587 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1589 cm_id->rem_ref(cm_id);
1590 ret = cm_id->event_handler(cm_id, &cm_event);
1592 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1596 if (nesqp->user_mode) {
1597 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1598 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1599 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1600 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1601 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1602 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1605 if (nesqp->pbl_pbase)
1606 kunmap(nesqp->page);
1609 nes_rem_ref(&nesqp->ibqp);
1617 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1619 struct ib_ucontext *context, struct ib_udata *udata)
1622 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1623 struct nes_device *nesdev = nesvnic->nesdev;
1624 struct nes_adapter *nesadapter = nesdev->nesadapter;
1625 struct nes_cq *nescq;
1626 struct nes_ucontext *nes_ucontext = NULL;
1627 struct nes_cqp_request *cqp_request;
1629 struct nes_hw_cqp_wqe *cqp_wqe;
1630 struct nes_pbl *nespbl = NULL;
1631 struct nes_create_cq_req req;
1632 struct nes_create_cq_resp resp;
1635 u32 pbl_entries = 1;
1637 unsigned long flags;
1640 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1641 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1643 return ERR_PTR(err);
1646 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1648 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1649 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1650 return ERR_PTR(-ENOMEM);
1653 nescq->hw_cq.cq_size = max(entries + 1, 5);
1654 nescq->hw_cq.cq_number = cq_num;
1655 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1659 nes_ucontext = to_nesucontext(context);
1660 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1661 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1663 return ERR_PTR(-EFAULT);
1665 nesvnic->mcrq_ucontext = nes_ucontext;
1666 nes_ucontext->mcrqf = req.mcrqf;
1667 if (nes_ucontext->mcrqf) {
1668 if (nes_ucontext->mcrqf & 0x80000000)
1669 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 12 + (nes_ucontext->mcrqf & 0xf) - 1;
1670 else if (nes_ucontext->mcrqf & 0x40000000)
1671 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1673 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1674 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1676 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1677 (unsigned long)req.user_cq_buffer, entries);
1679 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1680 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1681 list_del(&nespbl->list);
1683 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1689 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1691 return ERR_PTR(-EFAULT);
1694 pbl_entries = nespbl->pbl_size >> 3;
1695 nescq->cq_mem_size = 0;
1697 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1698 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1699 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1701 /* allocate the physical buffer space */
1702 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1703 &nescq->hw_cq.cq_pbase);
1705 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1706 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1708 return ERR_PTR(-ENOMEM);
1711 memset(mem, 0, nescq->cq_mem_size);
1712 nescq->hw_cq.cq_vbase = mem;
1713 nescq->hw_cq.cq_head = 0;
1714 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1715 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1716 (u32)nescq->hw_cq.cq_pbase);
1719 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1720 spin_lock_init(&nescq->lock);
1722 /* send CreateCQ request to CQP */
1723 cqp_request = nes_get_cqp_request(nesdev);
1724 if (cqp_request == NULL) {
1725 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1727 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1728 nescq->hw_cq.cq_pbase);
1729 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1731 return ERR_PTR(-ENOMEM);
1733 cqp_request->waiting = 1;
1734 cqp_wqe = &cqp_request->cqp_wqe;
1736 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1737 NES_CQP_CQ_CHK_OVERFLOW |
1738 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1740 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1742 if (pbl_entries != 1) {
1743 if (pbl_entries > 32) {
1745 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1746 if (nesadapter->free_4kpbl == 0) {
1747 if (cqp_request->dynamic) {
1748 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1751 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1752 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1755 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1756 nescq->hw_cq.cq_pbase);
1757 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1759 return ERR_PTR(-ENOMEM);
1761 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1762 nescq->virtual_cq = 2;
1763 nesadapter->free_4kpbl--;
1766 /* use 256 byte pbl */
1767 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1768 if (nesadapter->free_256pbl == 0) {
1769 if (cqp_request->dynamic) {
1770 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1773 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1774 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1777 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1778 nescq->hw_cq.cq_pbase);
1779 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1781 return ERR_PTR(-ENOMEM);
1783 opcode |= NES_CQP_CQ_VIRT;
1784 nescq->virtual_cq = 1;
1785 nesadapter->free_256pbl--;
1790 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1792 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1793 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1794 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1795 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1798 if (pbl_entries != 1)
1799 u64temp = (u64)nespbl->pbl_pbase;
1801 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1802 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1803 nes_ucontext->mmap_db_index[0]);
1805 u64temp = (u64)nescq->hw_cq.cq_pbase;
1806 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1808 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1809 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1810 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1811 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1812 cpu_to_le32((u32)(u64temp >> 1));
1813 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1814 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1816 atomic_set(&cqp_request->refcount, 2);
1817 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
1820 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1821 nescq->hw_cq.cq_number);
1822 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1823 NES_EVENT_TIMEOUT * 2);
1824 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1825 nescq->hw_cq.cq_number, ret);
1826 if ((!ret) || (cqp_request->major_code)) {
1827 if (atomic_dec_and_test(&cqp_request->refcount)) {
1828 if (cqp_request->dynamic) {
1831 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1832 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1833 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1837 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1838 nescq->hw_cq.cq_pbase);
1839 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1841 return ERR_PTR(-EIO);
1843 if (atomic_dec_and_test(&cqp_request->refcount)) {
1844 if (cqp_request->dynamic) {
1847 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1848 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1849 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1855 /* free the nespbl */
1856 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1859 resp.cq_id = nescq->hw_cq.cq_number;
1860 resp.cq_size = nescq->hw_cq.cq_size;
1861 resp.mmap_db_index = 0;
1862 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1863 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1865 return ERR_PTR(-EFAULT);
1869 return &nescq->ibcq;
1876 static int nes_destroy_cq(struct ib_cq *ib_cq)
1878 struct nes_cq *nescq;
1879 struct nes_device *nesdev;
1880 struct nes_vnic *nesvnic;
1881 struct nes_adapter *nesadapter;
1882 struct nes_hw_cqp_wqe *cqp_wqe;
1883 struct nes_cqp_request *cqp_request;
1884 unsigned long flags;
1891 nescq = to_nescq(ib_cq);
1892 nesvnic = to_nesvnic(ib_cq->device);
1893 nesdev = nesvnic->nesdev;
1894 nesadapter = nesdev->nesadapter;
1896 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1898 /* Send DestroyCQ request to CQP */
1899 cqp_request = nes_get_cqp_request(nesdev);
1900 if (cqp_request == NULL) {
1901 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1904 cqp_request->waiting = 1;
1905 cqp_wqe = &cqp_request->cqp_wqe;
1906 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1907 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1908 if (nescq->virtual_cq == 1) {
1909 nesadapter->free_256pbl++;
1910 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1911 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1912 __FUNCTION__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1914 } else if (nescq->virtual_cq == 2) {
1915 nesadapter->free_4kpbl++;
1916 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1917 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1918 __FUNCTION__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1920 opcode |= NES_CQP_CQ_4KB_CHUNK;
1923 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1925 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1926 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1927 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1928 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1929 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1930 atomic_set(&cqp_request->refcount, 2);
1931 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
1934 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1935 nescq->hw_cq.cq_number);
1936 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1938 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1939 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1940 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1941 cqp_request->minor_code);
1942 if ((!ret) || (cqp_request->major_code)) {
1943 if (atomic_dec_and_test(&cqp_request->refcount)) {
1944 if (cqp_request->dynamic) {
1947 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1948 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1949 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1953 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1954 nescq->hw_cq.cq_number);
1957 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1958 nescq->hw_cq.cq_number);
1963 if (atomic_dec_and_test(&cqp_request->refcount)) {
1964 if (cqp_request->dynamic) {
1967 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1968 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
1969 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1974 if (nescq->cq_mem_size)
1975 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1976 (void *)nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1986 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1987 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1988 dma_addr_t single_buffer, u16 pbl_count, u16 residual_page_count,
1989 int acc, u64 *iova_start)
1991 struct nes_hw_cqp_wqe *cqp_wqe;
1992 struct nes_cqp_request *cqp_request;
1993 unsigned long flags;
1995 struct nes_adapter *nesadapter = nesdev->nesadapter;
2000 /* Register the region with the adapter */
2001 cqp_request = nes_get_cqp_request(nesdev);
2002 if (cqp_request == NULL) {
2003 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2006 cqp_request->waiting = 1;
2007 cqp_wqe = &cqp_request->cqp_wqe;
2009 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2010 /* track PBL resources */
2011 if (pbl_count != 0) {
2012 if (pbl_count > 1) {
2014 if ((pbl_count+1) > nesadapter->free_4kpbl) {
2015 nes_debug(NES_DBG_MR, "Out of 4KB Pbls for two level request.\n");
2016 if (cqp_request->dynamic) {
2017 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2020 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2021 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2025 nesadapter->free_4kpbl -= pbl_count+1;
2027 } else if (residual_page_count > 32) {
2028 if (pbl_count > nesadapter->free_4kpbl) {
2029 nes_debug(NES_DBG_MR, "Out of 4KB Pbls.\n");
2030 if (cqp_request->dynamic) {
2031 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2034 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2035 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2039 nesadapter->free_4kpbl -= pbl_count;
2042 if (pbl_count > nesadapter->free_256pbl) {
2043 nes_debug(NES_DBG_MR, "Out of 256B Pbls.\n");
2044 if (cqp_request->dynamic) {
2045 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2048 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2049 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2053 nesadapter->free_256pbl -= pbl_count;
2058 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2060 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2061 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2062 if (acc & IB_ACCESS_LOCAL_WRITE)
2063 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2064 if (acc & IB_ACCESS_REMOTE_WRITE)
2065 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2066 if (acc & IB_ACCESS_REMOTE_READ)
2067 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2068 if (acc & IB_ACCESS_MW_BIND)
2069 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2071 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2072 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2073 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2074 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2076 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2077 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2078 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2079 cpu_to_le32(nespd->pd_id & 0x00007fff);
2080 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2082 if (pbl_count == 0) {
2083 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2085 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2086 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2087 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX,
2088 (((pbl_count - 1) * 4096) + (residual_page_count*8)));
2090 if ((pbl_count > 1) || (residual_page_count > 32))
2091 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2095 atomic_set(&cqp_request->refcount, 2);
2096 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
2099 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2101 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2102 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2103 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2104 major_code = cqp_request->major_code;
2105 if (atomic_dec_and_test(&cqp_request->refcount)) {
2106 if (cqp_request->dynamic) {
2109 spin_lock_irqsave(&nesdev->cqp.lock, flags);
2110 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2111 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
2116 else if (major_code)
2128 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2129 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2133 struct nes_pd *nespd = to_nespd(ib_pd);
2134 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2135 struct nes_device *nesdev = nesvnic->nesdev;
2136 struct nes_adapter *nesadapter = nesdev->nesadapter;
2137 struct nes_mr *nesmr;
2139 struct nes_vpbl vpbl;
2140 struct nes_root_vpbl root_vpbl;
2144 u32 next_stag_index = 0;
2146 u32 root_pbl_index = 0;
2147 u32 cur_pbl_index = 0;
2148 int err = 0, pbl_depth = 0;
2156 vpbl.pbl_vbase = NULL;
2157 root_vpbl.pbl_vbase = NULL;
2158 root_vpbl.pbl_pbase = 0;
2160 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2161 stag_key = (u8)next_stag_index;
2165 next_stag_index >>= 8;
2166 next_stag_index %= nesadapter->max_mr;
2167 if (num_phys_buf > (1024*512)) {
2168 return ERR_PTR(-E2BIG);
2171 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2172 &stag_index, &next_stag_index);
2174 return ERR_PTR(err);
2177 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2179 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2180 return ERR_PTR(-ENOMEM);
2183 for (i = 0; i < num_phys_buf; i++) {
2185 if ((i & 0x01FF) == 0) {
2186 if (root_pbl_index == 1) {
2187 /* Allocate the root PBL */
2188 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2189 &root_vpbl.pbl_pbase);
2190 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2191 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2192 if (!root_vpbl.pbl_vbase) {
2193 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2195 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2197 return ERR_PTR(-ENOMEM);
2199 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2200 if (!root_vpbl.leaf_vpbl) {
2201 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2202 root_vpbl.pbl_pbase);
2203 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2205 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2207 return ERR_PTR(-ENOMEM);
2209 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2210 root_vpbl.pbl_vbase[0].pa_high =
2211 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2212 root_vpbl.leaf_vpbl[0] = vpbl;
2214 /* Allocate a 4K buffer for the PBL */
2215 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2217 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2218 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2219 if (!vpbl.pbl_vbase) {
2220 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2221 ibmr = ERR_PTR(-ENOMEM);
2225 /* Fill in the root table */
2226 if (1 <= root_pbl_index) {
2227 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2228 cpu_to_le32((u32)vpbl.pbl_pbase);
2229 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2230 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2231 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2236 if (buffer_list[i].addr & ~PAGE_MASK) {
2237 /* TODO: Unwind allocated buffers */
2238 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2239 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2240 (unsigned int) buffer_list[i].addr);
2241 ibmr = ERR_PTR(-EINVAL);
2246 if (!buffer_list[i].size) {
2247 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2248 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2249 ibmr = ERR_PTR(-EINVAL);
2254 region_length += buffer_list[i].size;
2255 if ((i != 0) && (single_page)) {
2256 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2259 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr);
2260 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2261 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2264 stag = stag_index << 8;
2266 stag += (u32)stag_key;
2268 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2269 " length = 0x%016lX, index = 0x%08X\n",
2270 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2272 region_length -= (*iova_start)&PAGE_MASK;
2274 /* Make the leaf PBL the root if only one PBL */
2275 if (root_pbl_index == 1) {
2276 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2282 pbl_count = root_pbl_index;
2284 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2285 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start);
2288 nesmr->ibmr.rkey = stag;
2289 nesmr->ibmr.lkey = stag;
2290 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2291 ibmr = &nesmr->ibmr;
2292 nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
2293 nesmr->pbls_used = pbl_count;
2294 if (pbl_count > 1) {
2299 ibmr = ERR_PTR(-ENOMEM);
2303 /* free the resources */
2304 if (root_pbl_index == 1) {
2305 /* single PBL case */
2306 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2308 for (i=0; i<root_pbl_index; i++) {
2309 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2310 root_vpbl.leaf_vpbl[i].pbl_pbase);
2312 kfree(root_vpbl.leaf_vpbl);
2313 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2314 root_vpbl.pbl_pbase);
2324 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2326 struct ib_phys_buf bl;
2329 nes_debug(NES_DBG_MR, "\n");
2331 bl.size = (u64)0xffffffffffULL;
2333 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2340 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2341 u64 virt, int acc, struct ib_udata *udata)
2346 dma_addr_t last_dma_addr = 0;
2347 dma_addr_t first_dma_addr = 0;
2348 struct nes_pd *nespd = to_nespd(pd);
2349 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2350 struct nes_device *nesdev = nesvnic->nesdev;
2351 struct nes_adapter *nesadapter = nesdev->nesadapter;
2352 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2353 struct ib_umem_chunk *chunk;
2354 struct nes_ucontext *nes_ucontext;
2355 struct nes_pbl *nespbl;
2356 struct nes_mr *nesmr;
2357 struct ib_umem *region;
2358 struct nes_mem_reg_req req;
2359 struct nes_vpbl vpbl;
2360 struct nes_root_vpbl root_vpbl;
2361 int nmap_index, page_index;
2363 int err, pbl_depth = 0;
2368 u32 next_stag_index;
2370 u32 root_pbl_index = 0;
2371 u32 cur_pbl_index = 0;
2377 region = ib_umem_get(pd->uobject->context, start, length, acc);
2378 if (IS_ERR(region)) {
2379 return (struct ib_mr *)region;
2382 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2383 " offset = %u, page size = %u.\n",
2384 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2385 region->offset, region->page_size);
2387 skip_pages = ((u32)region->offset) >> 12;
2389 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2390 return ERR_PTR(-EFAULT);
2391 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2393 switch (req.reg_type) {
2394 case IWNES_MEMREG_TYPE_MEM:
2397 vpbl.pbl_vbase = NULL;
2398 root_vpbl.pbl_vbase = NULL;
2399 root_vpbl.pbl_pbase = 0;
2401 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2402 stag_key = (u8)next_stag_index;
2404 driver_key = next_stag_index & 0x70000000;
2406 next_stag_index >>= 8;
2407 next_stag_index %= nesadapter->max_mr;
2409 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2410 nesadapter->max_mr, &stag_index, &next_stag_index);
2412 ib_umem_release(region);
2413 return ERR_PTR(err);
2416 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2418 ib_umem_release(region);
2419 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2420 return ERR_PTR(-ENOMEM);
2422 nesmr->region = region;
2424 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2425 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2426 chunk->nents, chunk->nmap);
2427 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2428 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2429 ib_umem_release(region);
2430 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2431 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2432 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2433 ibmr = ERR_PTR(-EINVAL);
2435 goto reg_user_mr_err;
2438 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2439 ib_umem_release(region);
2440 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2442 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2443 ibmr = ERR_PTR(-EINVAL);
2445 goto reg_user_mr_err;
2448 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2449 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2450 region_length -= skip_pages << 12;
2451 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2453 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2455 if ((page_count&0x01FF) == 0) {
2456 if (page_count>(1024*512)) {
2457 ib_umem_release(region);
2458 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2460 nes_free_resource(nesadapter,
2461 nesadapter->allocated_mrs, stag_index);
2463 ibmr = ERR_PTR(-E2BIG);
2464 goto reg_user_mr_err;
2466 if (root_pbl_index == 1) {
2467 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2468 8192, &root_vpbl.pbl_pbase);
2469 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2470 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2471 if (!root_vpbl.pbl_vbase) {
2472 ib_umem_release(region);
2473 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2475 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2478 ibmr = ERR_PTR(-ENOMEM);
2479 goto reg_user_mr_err;
2481 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2483 if (!root_vpbl.leaf_vpbl) {
2484 ib_umem_release(region);
2485 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2486 root_vpbl.pbl_pbase);
2487 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2489 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2492 ibmr = ERR_PTR(-ENOMEM);
2493 goto reg_user_mr_err;
2495 root_vpbl.pbl_vbase[0].pa_low =
2496 cpu_to_le32((u32)vpbl.pbl_pbase);
2497 root_vpbl.pbl_vbase[0].pa_high =
2498 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2499 root_vpbl.leaf_vpbl[0] = vpbl;
2501 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2503 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2504 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2505 if (!vpbl.pbl_vbase) {
2506 ib_umem_release(region);
2507 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2508 ibmr = ERR_PTR(-ENOMEM);
2510 goto reg_user_mr_err;
2512 if (1 <= root_pbl_index) {
2513 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2514 cpu_to_le32((u32)vpbl.pbl_pbase);
2515 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2516 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2517 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2523 if (page_count != 0) {
2524 if ((last_dma_addr+4096) !=
2525 (sg_dma_address(&chunk->page_list[nmap_index])+
2528 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2531 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2533 last_dma_addr = first_dma_addr;
2537 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2538 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2539 (page_index*4096)));
2540 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2541 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2542 (page_index*4096))) >> 32)));
2549 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2550 " stag_key=0x%08x\n",
2551 stag_index, driver_key, stag_key);
2552 stag = stag_index << 8;
2554 stag += (u32)stag_key;
2560 /* Make the leaf PBL the root if only one PBL */
2561 if (root_pbl_index == 1) {
2562 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2568 pbl_count = root_pbl_index;
2571 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2572 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2573 stag, (unsigned int)iova_start,
2574 (unsigned int)region_length, stag_index,
2575 (unsigned long long)region->length, pbl_count);
2576 ret = nes_reg_mr( nesdev, nespd, stag, region->length, &root_vpbl,
2577 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc, &iova_start);
2579 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2582 nesmr->ibmr.rkey = stag;
2583 nesmr->ibmr.lkey = stag;
2584 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2585 ibmr = &nesmr->ibmr;
2586 nesmr->pbl_4k = ((pbl_count > 1) || (cur_pbl_index > 32)) ? 1 : 0;
2587 nesmr->pbls_used = pbl_count;
2588 if (pbl_count > 1) {
2592 ib_umem_release(region);
2594 ibmr = ERR_PTR(-ENOMEM);
2598 /* free the resources */
2599 if (root_pbl_index == 1) {
2600 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2603 for (page_index=0; page_index<root_pbl_index; page_index++) {
2604 pci_free_consistent(nesdev->pcidev, 4096,
2605 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2606 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2608 kfree(root_vpbl.leaf_vpbl);
2609 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2610 root_vpbl.pbl_pbase);
2613 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2617 case IWNES_MEMREG_TYPE_QP:
2618 case IWNES_MEMREG_TYPE_CQ:
2619 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2621 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2622 ib_umem_release(region);
2623 return ERR_PTR(-ENOMEM);
2625 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2627 ib_umem_release(region);
2629 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2630 return ERR_PTR(-ENOMEM);
2632 nesmr->region = region;
2633 nes_ucontext = to_nesucontext(pd->uobject->context);
2634 pbl_depth = region->length >> 12;
2635 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2636 nespbl->pbl_size = pbl_depth*sizeof(u64);
2637 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2638 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2640 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2643 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2644 nespbl->pbl_size, pbl_depth);
2645 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2646 &nespbl->pbl_pbase);
2648 ib_umem_release(region);
2651 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2652 return ERR_PTR(-ENOMEM);
2655 nespbl->pbl_vbase = (u64 *)pbl;
2656 nespbl->user_base = start;
2657 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2658 " pbl_vbase=%p user_base=0x%lx\n",
2659 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2660 (void *) nespbl->pbl_vbase, nespbl->user_base);
2662 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2663 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2664 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2665 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2666 nespbl->page = sg_page(&chunk->page_list[0]);
2667 for (page_index=0; page_index<chunk_pages; page_index++) {
2668 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2669 (sg_dma_address(&chunk->page_list[nmap_index])+
2670 (page_index*4096)));
2671 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2672 (sg_dma_address(&chunk->page_list[nmap_index])+
2673 (page_index*4096)))>>32);
2674 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2675 (unsigned long long)*pbl,
2676 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2681 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2682 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2684 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2686 nesmr->ibmr.rkey = -1;
2687 nesmr->ibmr.lkey = -1;
2688 nesmr->mode = req.reg_type;
2689 return &nesmr->ibmr;
2693 return ERR_PTR(-ENOSYS);
2700 static int nes_dereg_mr(struct ib_mr *ib_mr)
2702 struct nes_mr *nesmr = to_nesmr(ib_mr);
2703 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2704 struct nes_device *nesdev = nesvnic->nesdev;
2705 struct nes_adapter *nesadapter = nesdev->nesadapter;
2706 struct nes_hw_cqp_wqe *cqp_wqe;
2707 struct nes_cqp_request *cqp_request;
2708 unsigned long flags;
2713 if (nesmr->region) {
2714 ib_umem_release(nesmr->region);
2716 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2721 /* Deallocate the region with the adapter */
2723 cqp_request = nes_get_cqp_request(nesdev);
2724 if (cqp_request == NULL) {
2725 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2728 cqp_request->waiting = 1;
2729 cqp_wqe = &cqp_request->cqp_wqe;
2731 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2732 if (nesmr->pbls_used != 0) {
2733 if (nesmr->pbl_4k) {
2734 nesadapter->free_4kpbl += nesmr->pbls_used;
2735 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
2736 printk(KERN_ERR PFX "free 4KB PBLs(%u) has exceeded the max(%u)\n",
2737 nesadapter->free_4kpbl, nesadapter->max_4kpbl);
2740 nesadapter->free_256pbl += nesmr->pbls_used;
2741 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
2742 printk(KERN_ERR PFX "free 256B PBLs(%u) has exceeded the max(%u)\n",
2743 nesadapter->free_256pbl, nesadapter->max_256pbl);
2748 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2749 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2750 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2751 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2752 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2753 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2755 atomic_set(&cqp_request->refcount, 2);
2756 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
2759 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2760 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2762 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2763 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2764 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2766 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2767 (ib_mr->rkey & 0x0fffff00) >> 8);
2771 major_code = cqp_request->major_code;
2772 minor_code = cqp_request->minor_code;
2773 if (atomic_dec_and_test(&cqp_request->refcount)) {
2774 if (cqp_request->dynamic) {
2777 spin_lock_irqsave(&nesdev->cqp.lock, flags);
2778 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2779 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
2783 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2784 " ib_mr=%p, rkey = 0x%08X\n",
2785 ib_mr, ib_mr->rkey);
2787 } else if (major_code) {
2788 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2789 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2790 major_code, minor_code, ib_mr, ib_mr->rkey);
2800 static ssize_t show_rev(struct class_device *cdev, char *buf)
2802 struct nes_ib_device *nesibdev =
2803 container_of(cdev, struct nes_ib_device, ibdev.class_dev);
2804 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2806 nes_debug(NES_DBG_INIT, "\n");
2807 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2814 static ssize_t show_fw_ver(struct class_device *cdev, char *buf)
2816 struct nes_ib_device *nesibdev =
2817 container_of(cdev, struct nes_ib_device, ibdev.class_dev);
2818 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2820 nes_debug(NES_DBG_INIT, "\n");
2821 return sprintf(buf, "%x.%x.%x\n",
2822 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 32),
2823 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 16) & 0xffff,
2824 (int)(nesvnic->nesdev->nesadapter->fw_ver & 0xffff));
2831 static ssize_t show_hca(struct class_device *cdev, char *buf)
2833 nes_debug(NES_DBG_INIT, "\n");
2834 return sprintf(buf, "NES020\n");
2841 static ssize_t show_board(struct class_device *cdev, char *buf)
2843 nes_debug(NES_DBG_INIT, "\n");
2844 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2848 static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2849 static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2850 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2851 static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2853 static struct class_device_attribute *nes_class_attributes[] = {
2854 &class_device_attr_hw_rev,
2855 &class_device_attr_fw_ver,
2856 &class_device_attr_hca_type,
2857 &class_device_attr_board_id
2864 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2865 int attr_mask, struct ib_qp_init_attr *init_attr)
2867 struct nes_qp *nesqp = to_nesqp(ibqp);
2869 nes_debug(NES_DBG_QP, "\n");
2871 attr->qp_access_flags = 0;
2872 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2873 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2874 attr->cap.max_recv_sge = 1;
2875 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2876 init_attr->cap.max_inline_data = 0;
2878 init_attr->cap.max_inline_data = 64;
2881 init_attr->event_handler = nesqp->ibqp.event_handler;
2882 init_attr->qp_context = nesqp->ibqp.qp_context;
2883 init_attr->send_cq = nesqp->ibqp.send_cq;
2884 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2885 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2886 init_attr->cap = attr->cap;
2895 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2896 u32 next_iwarp_state, u32 wait_completion)
2898 struct nes_hw_cqp_wqe *cqp_wqe;
2899 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2900 /* struct iw_cm_event cm_event; */
2901 struct nes_cqp_request *cqp_request;
2902 unsigned long flags;
2906 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2907 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2909 cqp_request = nes_get_cqp_request(nesdev);
2910 if (cqp_request == NULL) {
2911 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2914 if (wait_completion) {
2915 cqp_request->waiting = 1;
2917 cqp_request->waiting = 0;
2919 cqp_wqe = &cqp_request->cqp_wqe;
2921 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2922 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2923 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2924 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2925 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2926 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2927 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2929 atomic_set(&cqp_request->refcount, 2);
2930 nes_post_cqp_request(nesdev, cqp_request, NES_CQP_REQUEST_RING_DOORBELL);
2933 if (wait_completion) {
2934 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2935 nesqp->hwqp.qp_id); */
2936 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2938 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2939 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2940 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2941 major_code = cqp_request->major_code;
2943 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2944 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2945 nesqp->hwqp.qp_id, cqp_request->major_code,
2946 cqp_request->minor_code, next_iwarp_state);
2948 if (atomic_dec_and_test(&cqp_request->refcount)) {
2949 if (cqp_request->dynamic) {
2952 spin_lock_irqsave(&nesdev->cqp.lock, flags);
2953 list_add_tail(&cqp_request->list, &nesdev->cqp_avail_reqs);
2954 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
2959 else if (major_code)
2972 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2973 int attr_mask, struct ib_udata *udata)
2975 struct nes_qp *nesqp = to_nesqp(ibqp);
2976 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2977 struct nes_device *nesdev = nesvnic->nesdev;
2980 u32 next_iwarp_state = 0;
2982 unsigned long qplockflags;
2984 u16 original_last_aeq;
2985 u8 issue_modify_qp = 0;
2986 u8 issue_disconnect = 0;
2989 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2990 " iwarp_state=0x%X, refcount=%d\n",
2991 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2992 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2994 nes_add_ref(&nesqp->ibqp);
2995 spin_lock_irqsave(&nesqp->lock, qplockflags);
2997 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2998 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2999 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
3000 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
3002 if (attr_mask & IB_QP_STATE) {
3003 switch (attr->qp_state) {
3005 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
3007 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3008 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3009 nes_rem_ref(&nesqp->ibqp);
3012 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3013 issue_modify_qp = 1;
3016 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
3018 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3019 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3020 nes_rem_ref(&nesqp->ibqp);
3023 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3024 issue_modify_qp = 1;
3027 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
3029 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
3030 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3031 nes_rem_ref(&nesqp->ibqp);
3034 if (nesqp->cm_id == NULL) {
3035 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
3036 nesqp->hwqp.qp_id );
3037 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3038 nes_rem_ref(&nesqp->ibqp);
3041 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
3042 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
3043 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3044 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3045 issue_modify_qp = 1;
3046 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3047 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3048 nesqp->hte_added = 1;
3051 issue_modify_qp = 1;
3052 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3053 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3054 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3055 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3056 nes_rem_ref(&nesqp->ibqp);
3059 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3060 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3061 " ignored due to current iWARP state\n",
3063 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3064 nes_rem_ref(&nesqp->ibqp);
3067 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3068 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3069 " already done based on hw state.\n",
3071 issue_modify_qp = 0;
3072 nesqp->in_disconnect = 0;
3074 switch (nesqp->hw_iwarp_state) {
3075 case NES_AEQE_IWARP_STATE_CLOSING:
3076 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3077 case NES_AEQE_IWARP_STATE_TERMINATE:
3078 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3080 case NES_AEQE_IWARP_STATE_ERROR:
3081 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3084 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3085 nesqp->in_disconnect = 1;
3086 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3092 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3094 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3095 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3096 nes_rem_ref(&nesqp->ibqp);
3099 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3100 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3101 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3102 issue_modify_qp = 1;
3103 nesqp->in_disconnect = 1;
3107 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3108 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3109 nes_rem_ref(&nesqp->ibqp);
3112 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3114 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3115 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3116 if (nesqp->hte_added) {
3117 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3118 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3119 nesqp->hte_added = 0;
3121 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3122 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3123 next_iwarp_state |= NES_CQP_QP_RESET;
3124 nesqp->in_disconnect = 1;
3126 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3127 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3130 issue_modify_qp = 1;
3131 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3134 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3135 nes_rem_ref(&nesqp->ibqp);
3140 nesqp->ibqp_state = attr->qp_state;
3141 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3142 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3143 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3144 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3145 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3146 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3147 nesqp->iwarp_state);
3148 issue_disconnect = 1;
3150 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3151 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3152 nesqp->iwarp_state);
3156 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3157 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3158 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3159 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3160 issue_modify_qp = 1;
3162 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3163 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3164 issue_modify_qp = 1;
3166 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3167 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3168 issue_modify_qp = 1;
3170 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3171 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3172 issue_modify_qp = 1;
3175 if (nesqp->user_mode) {
3176 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3177 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3178 issue_modify_qp = 1;
3182 original_last_aeq = nesqp->last_aeq;
3183 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3185 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3190 if (issue_modify_qp) {
3191 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3192 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
3194 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3195 " failed for QP%u.\n",
3196 next_iwarp_state, nesqp->hwqp.qp_id);
3200 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3201 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3202 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3203 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3204 original_last_aeq, nesqp->last_aeq);
3206 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3209 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3210 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3211 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3212 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3213 original_last_aeq, nesqp->last_aeq);
3214 /* this one is for the cm_disconnect thread */
3215 nes_add_ref(&nesqp->ibqp);
3216 spin_lock_irqsave(&nesqp->lock, qplockflags);
3217 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3218 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3219 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3220 nes_cm_disconn(nesqp);
3222 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3223 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3224 nes_rem_ref(&nesqp->ibqp);
3227 spin_lock_irqsave(&nesqp->lock, qplockflags);
3229 /* These two are for the timer thread */
3230 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3231 nes_add_ref(&nesqp->ibqp);
3232 nesqp->cm_id->add_ref(nesqp->cm_id);
3233 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3234 " need ae to finish up, original_last_aeq = 0x%04X."
3235 " last_aeq = 0x%04X, scheduling timer.\n",
3236 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3237 original_last_aeq, nesqp->last_aeq);
3238 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3240 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3242 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3243 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3244 " need ae to finish up, original_last_aeq = 0x%04X."
3245 " last_aeq = 0x%04X.\n",
3246 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3247 original_last_aeq, nesqp->last_aeq);
3251 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3252 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3253 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3254 original_last_aeq, nesqp->last_aeq);
3255 nes_rem_ref(&nesqp->ibqp);
3258 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3259 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3260 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3261 original_last_aeq, nesqp->last_aeq);
3262 nes_rem_ref(&nesqp->ibqp);
3267 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3268 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3275 * nes_muticast_attach
3277 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3279 nes_debug(NES_DBG_INIT, "\n");
3285 * nes_multicast_detach
3287 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3289 nes_debug(NES_DBG_INIT, "\n");
3297 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3298 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3299 struct ib_mad *in_mad, struct ib_mad *out_mad)
3301 nes_debug(NES_DBG_INIT, "\n");
3306 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3309 int total_payload_length = 0;
3310 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3311 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3312 ib_wr->sg_list[sge_index].addr);
3313 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3314 ib_wr->sg_list[sge_index].length);
3316 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3317 (ib_wr->sg_list[sge_index].lkey));
3319 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3321 total_payload_length += ib_wr->sg_list[sge_index].length;
3323 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3324 total_payload_length);
3325 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3326 total_payload_length);
3332 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3333 struct ib_send_wr **bad_wr)
3336 unsigned long flags = 0;
3337 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3338 struct nes_device *nesdev = nesvnic->nesdev;
3339 struct nes_qp *nesqp = to_nesqp(ibqp);
3340 struct nes_hw_qp_wqe *wqe;
3342 u32 qsize = nesqp->hwqp.sq_size;
3347 u32 total_payload_length;
3352 total_payload_length = 0;
3354 if (nesqp->ibqp_state > IB_QPS_RTS)
3357 spin_lock_irqsave(&nesqp->lock, flags);
3359 head = nesqp->hwqp.sq_head;
3362 /* Check for SQ overflow */
3363 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3368 wqe = &nesqp->hwqp.sq_vbase[head];
3369 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3370 nesqp->hwqp.qp_id, wqe, head); */
3371 nes_fill_init_qp_wqe(wqe, nesqp, head);
3372 u64temp = (u64)(ib_wr->wr_id);
3373 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3375 switch (ib_wr->opcode) {
3377 if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3378 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3380 wqe_misc = NES_IWARP_SQ_OP_SEND;
3382 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3386 if (ib_wr->send_flags & IB_SEND_FENCE) {
3387 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3389 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3390 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3391 (ib_wr->sg_list[0].length <= 64)) {
3392 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3393 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3394 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3395 ib_wr->sg_list[0].length);
3396 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3398 fill_wqe_sg_send(wqe, ib_wr, 1);
3402 case IB_WR_RDMA_WRITE:
3403 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3404 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3405 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3407 nesdev->nesadapter->max_sge);
3411 if (ib_wr->send_flags & IB_SEND_FENCE) {
3412 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3415 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3416 ib_wr->wr.rdma.rkey);
3417 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3418 ib_wr->wr.rdma.remote_addr);
3420 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3421 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3422 (ib_wr->sg_list[0].length <= 64)) {
3423 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3424 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3425 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3426 ib_wr->sg_list[0].length);
3427 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3429 fill_wqe_sg_send(wqe, ib_wr, 1);
3431 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3432 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3434 case IB_WR_RDMA_READ:
3435 /* iWARP only supports 1 sge for RDMA reads */
3436 if (ib_wr->num_sge > 1) {
3437 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3442 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3443 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3444 ib_wr->wr.rdma.remote_addr);
3445 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3446 ib_wr->wr.rdma.rkey);
3447 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3448 ib_wr->sg_list->length);
3449 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3450 ib_wr->sg_list->addr);
3451 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3452 ib_wr->sg_list->lkey);
3460 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3461 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3463 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3465 ib_wr = ib_wr->next;
3473 nesqp->hwqp.sq_head = head;
3476 counter = min(wqe_count, ((u32)255));
3477 wqe_count -= counter;
3478 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3479 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3482 spin_unlock_irqrestore(&nesqp->lock, flags);
3493 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3494 struct ib_recv_wr **bad_wr)
3497 unsigned long flags = 0;
3498 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3499 struct nes_device *nesdev = nesvnic->nesdev;
3500 struct nes_qp *nesqp = to_nesqp(ibqp);
3501 struct nes_hw_qp_wqe *wqe;
3504 u32 qsize = nesqp->hwqp.rq_size;
3508 u32 total_payload_length;
3510 if (nesqp->ibqp_state > IB_QPS_RTS)
3513 spin_lock_irqsave(&nesqp->lock, flags);
3515 head = nesqp->hwqp.rq_head;
3518 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3522 /* Check for RQ overflow */
3523 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3528 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3529 wqe = &nesqp->hwqp.rq_vbase[head];
3531 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3532 nesqp->hwqp.qp_id, wqe, head); */
3533 nes_fill_init_qp_wqe(wqe, nesqp, head);
3534 u64temp = (u64)(ib_wr->wr_id);
3535 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3537 total_payload_length = 0;
3538 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3539 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3540 ib_wr->sg_list[sge_index].addr);
3541 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3542 ib_wr->sg_list[sge_index].length);
3543 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3544 ib_wr->sg_list[sge_index].lkey);
3546 total_payload_length += ib_wr->sg_list[sge_index].length;
3548 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3549 total_payload_length);
3551 ib_wr = ib_wr->next;
3558 nesqp->hwqp.rq_head = head;
3561 counter = min(wqe_count, ((u32)255));
3562 wqe_count -= counter;
3563 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3566 spin_unlock_irqrestore(&nesqp->lock, flags);
3577 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3582 unsigned long flags = 0;
3583 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3584 struct nes_device *nesdev = nesvnic->nesdev;
3585 struct nes_cq *nescq = to_nescq(ibcq);
3586 struct nes_qp *nesqp;
3587 struct nes_hw_cqe cqe;
3596 nes_debug(NES_DBG_CQ, "\n");
3598 spin_lock_irqsave(&nescq->lock, flags);
3600 head = nescq->hw_cq.cq_head;
3601 cq_size = nescq->hw_cq.cq_size;
3603 while (cqe_count < num_entries) {
3604 if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3606 cqe = nescq->hw_cq.cq_vbase[head];
3607 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3608 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3609 wqe_index = u32temp &
3610 (nesdev->nesadapter->max_qp_wr - 1);
3611 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3612 /* parse CQE, get completion context from WQE (either rq or sq */
3613 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3615 nesqp = *((struct nes_qp **)&u64temp);
3616 memset(entry, 0, sizeof *entry);
3617 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3618 entry->status = IB_WC_SUCCESS;
3620 entry->status = IB_WC_WR_FLUSH_ERR;
3623 entry->qp = &nesqp->ibqp;
3624 entry->src_qp = nesqp->hwqp.qp_id;
3626 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3627 if (nesqp->skip_lsmm) {
3628 nesqp->skip_lsmm = 0;
3629 wq_tail = nesqp->hwqp.sq_tail++;
3632 /* Working on a SQ Completion*/
3633 wq_tail = wqe_index;
3634 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3635 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3636 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3637 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3638 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3639 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3640 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3642 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3643 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3644 case NES_IWARP_SQ_OP_RDMAW:
3645 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3646 entry->opcode = IB_WC_RDMA_WRITE;
3648 case NES_IWARP_SQ_OP_RDMAR:
3649 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3650 entry->opcode = IB_WC_RDMA_READ;
3651 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3652 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3654 case NES_IWARP_SQ_OP_SENDINV:
3655 case NES_IWARP_SQ_OP_SENDSEINV:
3656 case NES_IWARP_SQ_OP_SEND:
3657 case NES_IWARP_SQ_OP_SENDSE:
3658 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3659 entry->opcode = IB_WC_SEND;
3663 /* Working on a RQ Completion*/
3664 wq_tail = wqe_index;
3665 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3666 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3667 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3668 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3669 entry->opcode = IB_WC_RECV;
3671 entry->wr_id = wrid;
3673 if (++head >= cq_size)
3676 nescq->polled_completions++;
3677 if ((nescq->polled_completions > (cq_size / 2)) ||
3678 (nescq->polled_completions == 255)) {
3679 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3680 " are pending %u of %u.\n",
3681 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3682 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3683 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3684 nescq->polled_completions = 0;
3691 if (nescq->polled_completions) {
3692 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3693 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3694 nescq->polled_completions = 0;
3697 nescq->hw_cq.cq_head = head;
3698 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3699 cqe_count, nescq->hw_cq.cq_number);
3701 spin_unlock_irqrestore(&nescq->lock, flags);
3710 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3712 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3713 struct nes_device *nesdev = nesvnic->nesdev;
3714 struct nes_cq *nescq = to_nescq(ibcq);
3717 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3718 nescq->hw_cq.cq_number);
3720 cq_arm = nescq->hw_cq.cq_number;
3721 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3722 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3723 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3724 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3728 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3729 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3736 * nes_init_ofa_device
3738 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3740 struct nes_ib_device *nesibdev;
3741 struct nes_vnic *nesvnic = netdev_priv(netdev);
3742 struct nes_device *nesdev = nesvnic->nesdev;
3744 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3745 if (nesibdev == NULL) {
3748 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3749 nesibdev->ibdev.owner = THIS_MODULE;
3751 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3752 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3753 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3755 nesibdev->ibdev.uverbs_cmd_mask =
3756 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3757 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3758 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3759 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3760 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3761 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3762 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3763 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3764 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3765 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3766 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3767 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3768 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3769 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3770 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3771 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3772 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3773 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3774 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3775 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3776 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3777 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3779 nesibdev->ibdev.phys_port_cnt = 1;
3780 nesibdev->ibdev.num_comp_vectors = 1;
3781 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3782 nesibdev->ibdev.class_dev.dev = &nesdev->pcidev->dev;
3783 nesibdev->ibdev.query_device = nes_query_device;
3784 nesibdev->ibdev.query_port = nes_query_port;
3785 nesibdev->ibdev.modify_port = nes_modify_port;
3786 nesibdev->ibdev.query_pkey = nes_query_pkey;
3787 nesibdev->ibdev.query_gid = nes_query_gid;
3788 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3789 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3790 nesibdev->ibdev.mmap = nes_mmap;
3791 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3792 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3793 nesibdev->ibdev.create_ah = nes_create_ah;
3794 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3795 nesibdev->ibdev.create_qp = nes_create_qp;
3796 nesibdev->ibdev.modify_qp = nes_modify_qp;
3797 nesibdev->ibdev.query_qp = nes_query_qp;
3798 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3799 nesibdev->ibdev.create_cq = nes_create_cq;
3800 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3801 nesibdev->ibdev.poll_cq = nes_poll_cq;
3802 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3803 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3804 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3805 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3806 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3807 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3808 nesibdev->ibdev.bind_mw = nes_bind_mw;
3810 nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3811 nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3812 nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3813 nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3815 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3816 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3817 nesibdev->ibdev.process_mad = nes_process_mad;
3819 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3820 nesibdev->ibdev.post_send = nes_post_send;
3821 nesibdev->ibdev.post_recv = nes_post_recv;
3823 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3824 if (nesibdev->ibdev.iwcm == NULL) {
3825 ib_dealloc_device(&nesibdev->ibdev);
3828 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3829 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3830 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3831 nesibdev->ibdev.iwcm->connect = nes_connect;
3832 nesibdev->ibdev.iwcm->accept = nes_accept;
3833 nesibdev->ibdev.iwcm->reject = nes_reject;
3834 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3835 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3842 * nes_destroy_ofa_device
3844 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3846 if (nesibdev == NULL)
3849 nes_unregister_ofa_device(nesibdev);
3851 kfree(nesibdev->ibdev.iwcm);
3852 ib_dealloc_device(&nesibdev->ibdev);
3857 * nes_register_ofa_device
3859 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3861 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3862 struct nes_device *nesdev = nesvnic->nesdev;
3863 struct nes_adapter *nesadapter = nesdev->nesadapter;
3866 ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3871 /* Get the resources allocated to this device */
3872 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3873 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3874 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3875 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3877 for (i = 0; i < ARRAY_SIZE(nes_class_attributes); ++i) {
3878 ret = class_device_create_file(&nesibdev->ibdev.class_dev, nes_class_attributes[i]);
3882 class_device_remove_file(&nesibdev->ibdev.class_dev,
3883 nes_class_attributes[i]);
3885 ib_unregister_device(&nesibdev->ibdev);
3890 nesvnic->of_device_registered = 1;
3897 * nes_unregister_ofa_device
3899 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3901 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3904 for (i = 0; i < ARRAY_SIZE(nes_class_attributes); ++i) {
3905 class_device_remove_file(&nesibdev->ibdev.class_dev, nes_class_attributes[i]);
3908 if (nesvnic->of_device_registered) {
3909 ib_unregister_device(&nesibdev->ibdev);
3912 nesvnic->of_device_registered = 0;