2 * Copyright (c) 2006 - 2009 Intel-NE, 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) {
58 struct nes_pd *nespd = to_nespd(ibpd);
59 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
60 struct nes_device *nesdev = nesvnic->nesdev;
61 struct nes_adapter *nesadapter = nesdev->nesadapter;
62 struct nes_cqp_request *cqp_request;
65 struct nes_hw_cqp_wqe *cqp_wqe;
69 u32 next_stag_index = 0;
73 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
74 stag_key = (u8)next_stag_index;
78 next_stag_index >>= 8;
79 next_stag_index %= nesadapter->max_mr;
81 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
82 nesadapter->max_mr, &stag_index, &next_stag_index);
87 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
89 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
90 return ERR_PTR(-ENOMEM);
93 stag = stag_index << 8;
95 stag += (u32)stag_key;
97 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
100 /* Register the region with the adapter */
101 cqp_request = nes_get_cqp_request(nesdev);
102 if (cqp_request == NULL) {
104 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
105 return ERR_PTR(-ENOMEM);
108 cqp_request->waiting = 1;
109 cqp_wqe = &cqp_request->cqp_wqe;
111 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
112 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
113 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
114 NES_CQP_STAG_REM_ACC_EN);
116 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
117 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
120 atomic_set(&cqp_request->refcount, 2);
121 nes_post_cqp_request(nesdev, cqp_request);
124 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
126 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
127 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
128 stag, ret, cqp_request->major_code, cqp_request->minor_code);
129 if ((!ret) || (cqp_request->major_code)) {
130 nes_put_cqp_request(nesdev, cqp_request);
132 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
134 return ERR_PTR(-ETIME);
136 return ERR_PTR(-ENOMEM);
139 nes_put_cqp_request(nesdev, cqp_request);
141 nesmr->ibmw.rkey = stag;
142 nesmr->mode = IWNES_MEMREG_TYPE_MW;
145 nesmr->pbls_used = 0;
154 static int nes_dealloc_mw(struct ib_mw *ibmw)
156 struct nes_mr *nesmr = to_nesmw(ibmw);
157 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
158 struct nes_device *nesdev = nesvnic->nesdev;
159 struct nes_adapter *nesadapter = nesdev->nesadapter;
160 struct nes_hw_cqp_wqe *cqp_wqe;
161 struct nes_cqp_request *cqp_request;
165 /* Deallocate the window with the adapter */
166 cqp_request = nes_get_cqp_request(nesdev);
167 if (cqp_request == NULL) {
168 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
171 cqp_request->waiting = 1;
172 cqp_wqe = &cqp_request->cqp_wqe;
173 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
174 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
177 atomic_set(&cqp_request->refcount, 2);
178 nes_post_cqp_request(nesdev, cqp_request);
181 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
183 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
185 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
186 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
187 ret, cqp_request->major_code, cqp_request->minor_code);
190 else if (cqp_request->major_code)
193 nes_put_cqp_request(nesdev, cqp_request);
195 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
196 (ibmw->rkey & 0x0fffff00) >> 8);
206 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
207 struct ib_mw_bind *ibmw_bind)
210 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
211 struct nes_device *nesdev = nesvnic->nesdev;
212 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
213 struct nes_qp *nesqp = to_nesqp(ibqp);
214 struct nes_hw_qp_wqe *wqe;
215 unsigned long flags = 0;
220 if (nesqp->ibqp_state > IB_QPS_RTS)
223 spin_lock_irqsave(&nesqp->lock, flags);
225 head = nesqp->hwqp.sq_head;
226 qsize = nesqp->hwqp.sq_tail;
228 /* Check for SQ overflow */
229 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
230 spin_unlock_irqrestore(&nesqp->lock, flags);
234 wqe = &nesqp->hwqp.sq_vbase[head];
235 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
236 nes_fill_init_qp_wqe(wqe, nesqp, head);
237 u64temp = ibmw_bind->wr_id;
238 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
239 wqe_misc = NES_IWARP_SQ_OP_BIND;
241 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
243 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
244 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
246 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
247 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
249 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
250 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
253 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
258 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
259 u64temp = (u64)ibmw_bind->addr;
260 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
266 nesqp->hwqp.sq_head = head;
269 nes_write32(nesdev->regs+NES_WQE_ALLOC,
270 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
272 spin_unlock_irqrestore(&nesqp->lock, flags);
281 static struct ib_fmr *nes_alloc_fmr(struct ib_pd *ibpd,
282 int ibmr_access_flags,
283 struct ib_fmr_attr *ibfmr_attr)
286 struct nes_pd *nespd = to_nespd(ibpd);
287 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
288 struct nes_device *nesdev = nesvnic->nesdev;
289 struct nes_adapter *nesadapter = nesdev->nesadapter;
290 struct nes_fmr *nesfmr;
291 struct nes_cqp_request *cqp_request;
292 struct nes_hw_cqp_wqe *cqp_wqe;
296 u32 next_stag_index = 0;
301 struct nes_vpbl vpbl;
303 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
304 stag_key = (u8)next_stag_index;
308 next_stag_index >>= 8;
309 next_stag_index %= nesadapter->max_mr;
311 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
312 nesadapter->max_mr, &stag_index, &next_stag_index);
314 goto failed_resource_alloc;
317 nesfmr = kzalloc(sizeof(*nesfmr), GFP_KERNEL);
320 goto failed_fmr_alloc;
323 nesfmr->nesmr.mode = IWNES_MEMREG_TYPE_FMR;
324 if (ibfmr_attr->max_pages == 1) {
325 /* use zero length PBL */
326 nesfmr->nesmr.pbl_4k = 0;
327 nesfmr->nesmr.pbls_used = 0;
328 } else if (ibfmr_attr->max_pages <= 32) {
330 nesfmr->nesmr.pbl_4k = 0;
331 nesfmr->nesmr.pbls_used = 1;
332 } else if (ibfmr_attr->max_pages <= 512) {
334 nesfmr->nesmr.pbl_4k = 1;
335 nesfmr->nesmr.pbls_used = 1;
337 /* use two level 4K PBLs */
338 /* add support for two level 256B PBLs */
339 nesfmr->nesmr.pbl_4k = 1;
340 nesfmr->nesmr.pbls_used = 1 + (ibfmr_attr->max_pages >> 9) +
341 ((ibfmr_attr->max_pages & 511) ? 1 : 0);
343 /* Register the region with the adapter */
344 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
346 /* track PBL resources */
347 if (nesfmr->nesmr.pbls_used != 0) {
348 if (nesfmr->nesmr.pbl_4k) {
349 if (nesfmr->nesmr.pbls_used > nesadapter->free_4kpbl) {
350 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
352 goto failed_vpbl_avail;
354 nesadapter->free_4kpbl -= nesfmr->nesmr.pbls_used;
357 if (nesfmr->nesmr.pbls_used > nesadapter->free_256pbl) {
358 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
360 goto failed_vpbl_avail;
362 nesadapter->free_256pbl -= nesfmr->nesmr.pbls_used;
368 if (nesfmr->nesmr.pbls_used == 0) {
369 nesfmr->root_vpbl.pbl_vbase = NULL;
370 nes_debug(NES_DBG_MR, "zero level pbl \n");
371 } else if (nesfmr->nesmr.pbls_used == 1) {
372 /* can change it to kmalloc & dma_map_single */
373 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
374 &nesfmr->root_vpbl.pbl_pbase);
375 if (!nesfmr->root_vpbl.pbl_vbase) {
376 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
378 goto failed_vpbl_alloc;
380 nesfmr->leaf_pbl_cnt = 0;
381 nes_debug(NES_DBG_MR, "one level pbl, root_vpbl.pbl_vbase=%p \n",
382 nesfmr->root_vpbl.pbl_vbase);
386 nesfmr->root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
387 &nesfmr->root_vpbl.pbl_pbase);
388 if (!nesfmr->root_vpbl.pbl_vbase) {
389 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
391 goto failed_vpbl_alloc;
394 nesfmr->leaf_pbl_cnt = nesfmr->nesmr.pbls_used-1;
395 nesfmr->root_vpbl.leaf_vpbl = kzalloc(sizeof(*nesfmr->root_vpbl.leaf_vpbl)*1024, GFP_ATOMIC);
396 if (!nesfmr->root_vpbl.leaf_vpbl) {
397 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
399 goto failed_leaf_vpbl_alloc;
402 nes_debug(NES_DBG_MR, "two level pbl, root_vpbl.pbl_vbase=%p"
403 " leaf_pbl_cnt=%d root_vpbl.leaf_vpbl=%p\n",
404 nesfmr->root_vpbl.pbl_vbase, nesfmr->leaf_pbl_cnt, nesfmr->root_vpbl.leaf_vpbl);
406 for (i=0; i<nesfmr->leaf_pbl_cnt; i++)
407 nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase = NULL;
409 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
410 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
413 if (!vpbl.pbl_vbase) {
415 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
416 goto failed_leaf_vpbl_pages_alloc;
419 nesfmr->root_vpbl.pbl_vbase[i].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
420 nesfmr->root_vpbl.pbl_vbase[i].pa_high = cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
421 nesfmr->root_vpbl.leaf_vpbl[i] = vpbl;
423 nes_debug(NES_DBG_MR, "pbase_low=0x%x, pbase_high=0x%x, vpbl=%p\n",
424 nesfmr->root_vpbl.pbl_vbase[i].pa_low,
425 nesfmr->root_vpbl.pbl_vbase[i].pa_high,
426 &nesfmr->root_vpbl.leaf_vpbl[i]);
429 nesfmr->ib_qp = NULL;
430 nesfmr->access_rights =0;
432 stag = stag_index << 8;
434 stag += (u32)stag_key;
436 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
437 cqp_request = nes_get_cqp_request(nesdev);
438 if (cqp_request == NULL) {
439 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
441 goto failed_leaf_vpbl_pages_alloc;
443 cqp_request->waiting = 1;
444 cqp_wqe = &cqp_request->cqp_wqe;
446 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
449 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
451 if (nesfmr->nesmr.pbl_4k == 1)
452 opcode |= NES_CQP_STAG_PBL_BLK_SIZE;
454 if (ibmr_access_flags & IB_ACCESS_REMOTE_WRITE) {
455 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE |
456 NES_CQP_STAG_RIGHTS_LOCAL_WRITE | NES_CQP_STAG_REM_ACC_EN;
457 nesfmr->access_rights |=
458 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_RIGHTS_LOCAL_WRITE |
459 NES_CQP_STAG_REM_ACC_EN;
462 if (ibmr_access_flags & IB_ACCESS_REMOTE_READ) {
463 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ |
464 NES_CQP_STAG_RIGHTS_LOCAL_READ | NES_CQP_STAG_REM_ACC_EN;
465 nesfmr->access_rights |=
466 NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_RIGHTS_LOCAL_READ |
467 NES_CQP_STAG_REM_ACC_EN;
470 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
471 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
472 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
473 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
475 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] =
476 cpu_to_le32((nesfmr->nesmr.pbls_used>1) ?
477 (nesfmr->nesmr.pbls_used-1) : nesfmr->nesmr.pbls_used);
479 atomic_set(&cqp_request->refcount, 2);
480 nes_post_cqp_request(nesdev, cqp_request);
483 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
485 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
486 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
487 stag, ret, cqp_request->major_code, cqp_request->minor_code);
489 if ((!ret) || (cqp_request->major_code)) {
490 nes_put_cqp_request(nesdev, cqp_request);
491 ret = (!ret) ? -ETIME : -EIO;
492 goto failed_leaf_vpbl_pages_alloc;
494 nes_put_cqp_request(nesdev, cqp_request);
495 nesfmr->nesmr.ibfmr.lkey = stag;
496 nesfmr->nesmr.ibfmr.rkey = stag;
497 nesfmr->attr = *ibfmr_attr;
499 return &nesfmr->nesmr.ibfmr;
501 failed_leaf_vpbl_pages_alloc:
502 /* unroll all allocated pages */
503 for (i=0; i<nesfmr->leaf_pbl_cnt; i++) {
504 if (nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase) {
505 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
506 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
509 if (nesfmr->root_vpbl.leaf_vpbl)
510 kfree(nesfmr->root_vpbl.leaf_vpbl);
512 failed_leaf_vpbl_alloc:
513 if (nesfmr->leaf_pbl_cnt == 0) {
514 if (nesfmr->root_vpbl.pbl_vbase)
515 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
516 nesfmr->root_vpbl.pbl_pbase);
518 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
519 nesfmr->root_vpbl.pbl_pbase);
522 if (nesfmr->nesmr.pbls_used != 0) {
523 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
524 if (nesfmr->nesmr.pbl_4k)
525 nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
527 nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
528 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
535 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
537 failed_resource_alloc:
545 static int nes_dealloc_fmr(struct ib_fmr *ibfmr)
548 struct nes_mr *nesmr = to_nesmr_from_ibfmr(ibfmr);
549 struct nes_fmr *nesfmr = to_nesfmr(nesmr);
550 struct nes_vnic *nesvnic = to_nesvnic(ibfmr->device);
551 struct nes_device *nesdev = nesvnic->nesdev;
552 struct nes_adapter *nesadapter = nesdev->nesadapter;
556 /* free the resources */
557 if (nesfmr->leaf_pbl_cnt == 0) {
558 /* single PBL case */
559 if (nesfmr->root_vpbl.pbl_vbase)
560 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.pbl_vbase,
561 nesfmr->root_vpbl.pbl_pbase);
563 for (i = 0; i < nesfmr->leaf_pbl_cnt; i++) {
564 pci_free_consistent(nesdev->pcidev, 4096, nesfmr->root_vpbl.leaf_vpbl[i].pbl_vbase,
565 nesfmr->root_vpbl.leaf_vpbl[i].pbl_pbase);
567 kfree(nesfmr->root_vpbl.leaf_vpbl);
568 pci_free_consistent(nesdev->pcidev, 8192, nesfmr->root_vpbl.pbl_vbase,
569 nesfmr->root_vpbl.pbl_pbase);
571 nesmr->ibmw.device = ibfmr->device;
572 nesmr->ibmw.pd = ibfmr->pd;
573 nesmr->ibmw.rkey = ibfmr->rkey;
574 nesmr->ibmw.uobject = NULL;
576 rc = nes_dealloc_mw(&nesmr->ibmw);
578 if ((rc == 0) && (nesfmr->nesmr.pbls_used != 0)) {
579 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
580 if (nesfmr->nesmr.pbl_4k) {
581 nesadapter->free_4kpbl += nesfmr->nesmr.pbls_used;
582 WARN_ON(nesadapter->free_4kpbl > nesadapter->max_4kpbl);
584 nesadapter->free_256pbl += nesfmr->nesmr.pbls_used;
585 WARN_ON(nesadapter->free_256pbl > nesadapter->max_256pbl);
587 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
597 static int nes_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
598 int list_len, u64 iova)
607 static int nes_unmap_fmr(struct list_head *ibfmr_list)
617 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
619 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
620 struct nes_device *nesdev = nesvnic->nesdev;
621 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
623 memset(props, 0, sizeof(*props));
624 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
626 props->fw_ver = nesdev->nesadapter->fw_ver;
627 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
628 props->vendor_id = nesdev->nesadapter->vendor_id;
629 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
630 props->hw_ver = nesdev->nesadapter->hw_rev;
631 props->max_mr_size = 0x80000000;
632 props->max_qp = nesibdev->max_qp;
633 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
634 props->max_sge = nesdev->nesadapter->max_sge;
635 props->max_cq = nesibdev->max_cq;
636 props->max_cqe = nesdev->nesadapter->max_cqe - 1;
637 props->max_mr = nesibdev->max_mr;
638 props->max_mw = nesibdev->max_mr;
639 props->max_pd = nesibdev->max_pd;
640 props->max_sge_rd = 1;
641 switch (nesdev->nesadapter->max_irrq_wr) {
643 props->max_qp_rd_atom = 1;
646 props->max_qp_rd_atom = 4;
649 props->max_qp_rd_atom = 16;
652 props->max_qp_rd_atom = 32;
655 props->max_qp_rd_atom = 0;
657 props->max_qp_init_rd_atom = props->max_qp_wr;
658 props->atomic_cap = IB_ATOMIC_NONE;
659 props->max_map_per_fmr = 1;
668 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
670 memset(props, 0, sizeof(*props));
672 props->max_mtu = IB_MTU_2048;
673 props->active_mtu = IB_MTU_2048;
678 props->state = IB_PORT_ACTIVE;
679 props->phys_state = 0;
680 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
681 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
682 props->gid_tbl_len = 1;
683 props->pkey_tbl_len = 1;
684 props->qkey_viol_cntr = 0;
685 props->active_width = IB_WIDTH_4X;
686 props->active_speed = 1;
687 props->max_msg_sz = 0x80000000;
696 static int nes_modify_port(struct ib_device *ibdev, u8 port,
697 int port_modify_mask, struct ib_port_modify *props)
706 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
716 static int nes_query_gid(struct ib_device *ibdev, u8 port,
717 int index, union ib_gid *gid)
719 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
721 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
722 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
729 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
730 * of all objects associated with a particular user-mode client.
732 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
733 struct ib_udata *udata)
735 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
736 struct nes_device *nesdev = nesvnic->nesdev;
737 struct nes_adapter *nesadapter = nesdev->nesadapter;
738 struct nes_alloc_ucontext_req req;
739 struct nes_alloc_ucontext_resp uresp;
740 struct nes_ucontext *nes_ucontext;
741 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
744 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
745 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
746 return ERR_PTR(-EINVAL);
749 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
750 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
751 req.userspace_ver, NES_ABI_USERSPACE_VER);
752 return ERR_PTR(-EINVAL);
756 memset(&uresp, 0, sizeof uresp);
758 uresp.max_qps = nesibdev->max_qp;
759 uresp.max_pds = nesibdev->max_pd;
760 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
761 uresp.virtwq = nesadapter->virtwq;
762 uresp.kernel_ver = NES_ABI_KERNEL_VER;
764 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
766 return ERR_PTR(-ENOMEM);
768 nes_ucontext->nesdev = nesdev;
769 nes_ucontext->mmap_wq_offset = uresp.max_pds;
770 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
771 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
775 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
777 return ERR_PTR(-EFAULT);
780 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
781 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
782 atomic_set(&nes_ucontext->usecnt, 1);
783 return &nes_ucontext->ibucontext;
788 * nes_dealloc_ucontext
790 static int nes_dealloc_ucontext(struct ib_ucontext *context)
792 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
793 /* struct nes_device *nesdev = nesvnic->nesdev; */
794 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
796 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
806 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
809 struct nes_vnic *nesvnic = to_nesvnic(context->device);
810 struct nes_device *nesdev = nesvnic->nesdev;
811 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
812 struct nes_ucontext *nes_ucontext;
813 struct nes_qp *nesqp;
815 nes_ucontext = to_nesucontext(context);
818 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
819 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
820 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
821 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
822 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
823 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
826 nesqp = nes_ucontext->mmap_nesqp[index];
828 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
831 if (remap_pfn_range(vma, vma->vm_start,
832 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
833 vma->vm_end - vma->vm_start,
834 vma->vm_page_prot)) {
835 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
838 vma->vm_private_data = nesqp;
841 index = vma->vm_pgoff;
842 if (!test_bit(index, nes_ucontext->allocated_doorbells))
845 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
846 if (io_remap_pfn_range(vma, vma->vm_start,
847 (nesdev->doorbell_start +
848 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
849 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
851 vma->vm_private_data = nes_ucontext;
862 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
863 struct ib_ucontext *context, struct ib_udata *udata)
865 struct nes_pd *nespd;
866 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
867 struct nes_device *nesdev = nesvnic->nesdev;
868 struct nes_adapter *nesadapter = nesdev->nesadapter;
869 struct nes_ucontext *nesucontext;
870 struct nes_alloc_pd_resp uresp;
874 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
875 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
876 atomic_read(&nesvnic->netdev->refcnt));
878 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
879 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
884 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
886 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
887 return ERR_PTR(-ENOMEM);
890 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
891 nespd, nesvnic->nesibdev->ibdev.name);
893 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
896 nesucontext = to_nesucontext(context);
897 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
898 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
899 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
900 nespd->mmap_db_index, nespd->pd_id);
901 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
902 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
903 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
905 return ERR_PTR(-ENOMEM);
908 uresp.pd_id = nespd->pd_id;
909 uresp.mmap_db_index = nespd->mmap_db_index;
910 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
911 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
913 return ERR_PTR(-EFAULT);
916 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
917 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
918 nesucontext->first_free_db = nespd->mmap_db_index + 1;
921 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
929 static int nes_dealloc_pd(struct ib_pd *ibpd)
931 struct nes_ucontext *nesucontext;
932 struct nes_pd *nespd = to_nespd(ibpd);
933 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
934 struct nes_device *nesdev = nesvnic->nesdev;
935 struct nes_adapter *nesadapter = nesdev->nesadapter;
937 if ((ibpd->uobject) && (ibpd->uobject->context)) {
938 nesucontext = to_nesucontext(ibpd->uobject->context);
939 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
940 nespd->mmap_db_index);
941 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
942 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
943 if (nesucontext->first_free_db > nespd->mmap_db_index) {
944 nesucontext->first_free_db = nespd->mmap_db_index;
948 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
949 nespd->pd_id, nespd);
950 nes_free_resource(nesadapter, nesadapter->allocated_pds,
951 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
961 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
963 return ERR_PTR(-ENOSYS);
970 static int nes_destroy_ah(struct ib_ah *ah)
977 * nes_get_encoded_size
979 static inline u8 nes_get_encoded_size(int *size)
985 } else if (*size <= 128) {
988 } else if (*size <= 512) {
992 return (encoded_size);
1000 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
1001 struct nes_vnic *nesvnic, int sq_size, int rq_size)
1003 unsigned long flags;
1008 struct nes_device *nesdev = nesvnic->nesdev;
1009 struct nes_adapter *nesadapter = nesdev->nesadapter;
1014 pbl_entries = nespbl->pbl_size >> 3;
1015 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
1016 nespbl->pbl_size, pbl_entries,
1017 (void *)nespbl->pbl_vbase,
1018 (unsigned long) nespbl->pbl_pbase);
1019 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
1020 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
1021 /* the first pbl to be fro the rq_vbase... */
1022 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1023 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
1024 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1025 if (!nespbl->page) {
1026 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
1031 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
1032 nesqp->page = nespbl->page;
1033 if (!nesqp->hwqp.sq_vbase) {
1034 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
1039 /* Now to get to sq.. we need to calculate how many */
1040 /* PBL entries were used by the rq.. */
1041 pbl += sq_pbl_entries;
1042 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
1043 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
1044 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
1046 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
1047 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
1048 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
1049 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1050 if (!nesadapter->free_256pbl) {
1051 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1053 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1054 kunmap(nesqp->page);
1058 nesadapter->free_256pbl--;
1059 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1061 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
1062 pblbuffer = nesqp->pbl_vbase;
1063 if (!nesqp->pbl_vbase) {
1064 /* memory allocated during nes_reg_user_mr() */
1065 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1068 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1069 nesadapter->free_256pbl++;
1070 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1071 kunmap(nesqp->page);
1074 memset(nesqp->pbl_vbase, 0, 256);
1075 /* fill in the page address in the pbl buffer.. */
1076 tpbl = pblbuffer + 16;
1077 pbl = (__le64 *)nespbl->pbl_vbase;
1078 while (sq_pbl_entries--)
1081 while (rq_pbl_entries--)
1084 /* done with memory allocated during nes_reg_user_mr() */
1085 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1089 nesqp->qp_mem_size =
1090 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1091 /* Round up to a multiple of a page */
1092 nesqp->qp_mem_size += PAGE_SIZE - 1;
1093 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1095 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1096 &nesqp->hwqp.q2_pbase);
1099 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1100 nesqp->pbl_vbase = NULL;
1101 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1102 nesadapter->free_256pbl++;
1103 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1104 kunmap(nesqp->page);
1107 nesqp->hwqp.q2_vbase = mem;
1109 memset(nesqp->hwqp.q2_vbase, 0, 256);
1110 nesqp->nesqp_context = mem;
1111 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1112 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1121 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1122 int sq_size, int rq_size)
1125 struct nes_device *nesdev = nesvnic->nesdev;
1127 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1128 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1129 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1130 256; /* this is Q2 */
1131 /* Round up to a multiple of a page */
1132 nesqp->qp_mem_size += PAGE_SIZE - 1;
1133 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1135 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1136 &nesqp->hwqp.sq_pbase);
1139 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1140 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1141 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1143 memset(mem, 0, nesqp->qp_mem_size);
1145 nesqp->hwqp.sq_vbase = mem;
1146 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1148 nesqp->hwqp.rq_vbase = mem;
1149 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1150 sizeof(struct nes_hw_qp_wqe) * sq_size;
1151 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1153 nesqp->hwqp.q2_vbase = mem;
1154 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1155 sizeof(struct nes_hw_qp_wqe) * rq_size;
1157 memset(nesqp->hwqp.q2_vbase, 0, 256);
1159 nesqp->nesqp_context = mem;
1160 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1161 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1167 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1169 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1170 struct nes_qp *nesqp, int virt_wqs)
1172 unsigned long flags;
1173 struct nes_adapter *nesadapter = nesdev->nesadapter;
1175 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1176 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1178 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1179 nesadapter->free_256pbl++;
1180 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1181 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1182 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1183 nesqp->pbl_vbase = NULL;
1184 kunmap(nesqp->page);
1192 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1193 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1197 struct nes_pd *nespd = to_nespd(ibpd);
1198 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1199 struct nes_device *nesdev = nesvnic->nesdev;
1200 struct nes_adapter *nesadapter = nesdev->nesadapter;
1201 struct nes_qp *nesqp;
1202 struct nes_cq *nescq;
1203 struct nes_ucontext *nes_ucontext;
1204 struct nes_hw_cqp_wqe *cqp_wqe;
1205 struct nes_cqp_request *cqp_request;
1206 struct nes_create_qp_req req;
1207 struct nes_create_qp_resp uresp;
1208 struct nes_pbl *nespbl = NULL;
1211 /* u32 counter = 0; */
1213 unsigned long flags;
1223 if (init_attr->create_flags)
1224 return ERR_PTR(-EINVAL);
1226 atomic_inc(&qps_created);
1227 switch (init_attr->qp_type) {
1229 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1230 init_attr->cap.max_inline_data = 0;
1232 init_attr->cap.max_inline_data = 64;
1234 sq_size = init_attr->cap.max_send_wr;
1235 rq_size = init_attr->cap.max_recv_wr;
1237 /* check if the encoded sizes are OK or not... */
1238 sq_encoded_size = nes_get_encoded_size(&sq_size);
1239 rq_encoded_size = nes_get_encoded_size(&rq_size);
1241 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1242 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1244 return ERR_PTR(-EINVAL);
1247 init_attr->cap.max_send_wr = sq_size -2;
1248 init_attr->cap.max_recv_wr = rq_size -1;
1249 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1251 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1252 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1254 return ERR_PTR(ret);
1257 /* Need 512 (actually now 1024) byte alignment on this structure */
1258 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1260 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1261 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1262 return ERR_PTR(-ENOMEM);
1264 u64nesqp = (unsigned long)mem;
1265 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1266 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1267 u64nesqp &= ~u64temp;
1268 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1269 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1270 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1271 nesqp->allocated_buffer = mem;
1274 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1275 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1276 kfree(nesqp->allocated_buffer);
1277 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1280 if (req.user_wqe_buffers) {
1283 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1284 nesqp->user_mode = 1;
1285 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1288 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1289 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1290 list_del(&nespbl->list);
1292 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1293 nespbl, nespbl->user_base);
1298 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1299 (long long unsigned int)req.user_wqe_buffers);
1300 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1301 kfree(nesqp->allocated_buffer);
1302 return ERR_PTR(-EFAULT);
1306 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1307 nesqp->mmap_sq_db_index =
1308 find_next_zero_bit(nes_ucontext->allocated_wqs,
1309 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1310 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1311 nespd->mmap_db_index); */
1312 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1313 nes_debug(NES_DBG_QP,
1314 "db index > max user regions, failing create QP\n");
1315 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1317 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1321 kfree(nesqp->allocated_buffer);
1322 return ERR_PTR(-ENOMEM);
1324 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1325 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1326 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1328 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1329 kfree(nesqp->allocated_buffer);
1330 return ERR_PTR(-EFAULT);
1333 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1334 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1336 nes_debug(NES_DBG_QP,
1337 "error geting qp mem code = %d\n", err);
1338 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1339 kfree(nesqp->allocated_buffer);
1340 return ERR_PTR(-ENOMEM);
1343 nesqp->hwqp.sq_size = sq_size;
1344 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1345 nesqp->hwqp.sq_head = 1;
1346 nesqp->hwqp.rq_size = rq_size;
1347 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1348 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1349 (void *)nesqp->nesqp_context_pbase);
1351 nesqp->hwqp.qp_id = qp_num;
1352 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1353 nesqp->nespd = nespd;
1355 nescq = to_nescq(init_attr->send_cq);
1356 nesqp->nesscq = nescq;
1357 nescq = to_nescq(init_attr->recv_cq);
1358 nesqp->nesrcq = nescq;
1360 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1361 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1362 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1363 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1364 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1365 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1366 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1367 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1368 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1369 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1370 u64temp = (u64)nesqp->hwqp.sq_pbase;
1371 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1372 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1376 u64temp = (u64)nesqp->hwqp.sq_pbase;
1377 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1378 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1379 u64temp = (u64)nesqp->hwqp.rq_pbase;
1380 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1381 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1383 u64temp = (u64)nesqp->pbl_pbase;
1384 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1385 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1388 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1389 nesvnic->next_qp_nic_index,
1390 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1391 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1392 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1393 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1394 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1395 nesvnic->next_qp_nic_index++;
1396 if ((nesvnic->next_qp_nic_index > 3) ||
1397 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1398 nesvnic->next_qp_nic_index = 0;
1400 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1402 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1403 u64temp = (u64)nesqp->hwqp.q2_pbase;
1404 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1405 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1406 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1407 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1408 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1409 ((((u32)nesadapter->max_irrq_wr) <<
1410 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1411 if (disable_mpa_crc) {
1412 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1413 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1418 cqp_request = nes_get_cqp_request(nesdev);
1419 if (cqp_request == NULL) {
1420 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1421 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1422 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1423 kfree(nesqp->allocated_buffer);
1424 return ERR_PTR(-ENOMEM);
1426 cqp_request->waiting = 1;
1427 cqp_wqe = &cqp_request->cqp_wqe;
1430 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1431 NES_CQP_QP_IWARP_STATE_IDLE;
1433 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1434 NES_CQP_QP_IWARP_STATE_IDLE;
1436 opcode |= NES_CQP_QP_CQS_VALID;
1437 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1438 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1439 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1441 u64temp = (u64)nesqp->nesqp_context_pbase;
1442 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1444 atomic_set(&cqp_request->refcount, 2);
1445 nes_post_cqp_request(nesdev, cqp_request);
1448 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1450 ret = wait_event_timeout(cqp_request->waitq,
1451 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1452 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1453 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1454 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1455 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1456 cqp_request->major_code, cqp_request->minor_code);
1457 if ((!ret) || (cqp_request->major_code)) {
1458 nes_put_cqp_request(nesdev, cqp_request);
1459 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1460 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1461 kfree(nesqp->allocated_buffer);
1463 return ERR_PTR(-ETIME);
1465 return ERR_PTR(-EIO);
1469 nes_put_cqp_request(nesdev, cqp_request);
1471 if (ibpd->uobject) {
1472 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1473 uresp.actual_sq_size = sq_size;
1474 uresp.actual_rq_size = rq_size;
1475 uresp.qp_id = nesqp->hwqp.qp_id;
1476 uresp.nes_drv_opt = nes_drv_opt;
1477 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1478 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1479 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1480 kfree(nesqp->allocated_buffer);
1481 return ERR_PTR(-EFAULT);
1485 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1486 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1487 spin_lock_init(&nesqp->lock);
1488 init_waitqueue_head(&nesqp->state_waitq);
1489 init_waitqueue_head(&nesqp->kick_waitq);
1490 nes_add_ref(&nesqp->ibqp);
1493 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1494 return ERR_PTR(-EINVAL);
1497 /* update the QP table */
1498 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1499 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1500 atomic_read(&nesvnic->netdev->refcnt));
1502 return &nesqp->ibqp;
1509 static int nes_destroy_qp(struct ib_qp *ibqp)
1511 struct nes_qp *nesqp = to_nesqp(ibqp);
1512 /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
1513 struct nes_ucontext *nes_ucontext;
1514 struct ib_qp_attr attr;
1515 struct iw_cm_id *cm_id;
1516 struct iw_cm_event cm_event;
1519 atomic_inc(&sw_qps_destroyed);
1520 nesqp->destroyed = 1;
1522 /* Blow away the connection if it exists. */
1523 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1524 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1525 attr.qp_state = IB_QPS_ERR;
1526 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1529 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1530 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1531 cm_id = nesqp->cm_id;
1532 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1533 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1534 cm_event.local_addr = cm_id->local_addr;
1535 cm_event.remote_addr = cm_id->remote_addr;
1536 cm_event.private_data = NULL;
1537 cm_event.private_data_len = 0;
1539 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1540 "QP%u. cm_id = %p, refcount = %u. \n",
1541 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1543 cm_id->rem_ref(cm_id);
1544 ret = cm_id->event_handler(cm_id, &cm_event);
1546 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1550 if (nesqp->user_mode) {
1551 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1552 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1553 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1554 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1555 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1556 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1559 if (nesqp->pbl_pbase)
1560 kunmap(nesqp->page);
1563 nes_rem_ref(&nesqp->ibqp);
1571 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1573 struct ib_ucontext *context, struct ib_udata *udata)
1576 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1577 struct nes_device *nesdev = nesvnic->nesdev;
1578 struct nes_adapter *nesadapter = nesdev->nesadapter;
1579 struct nes_cq *nescq;
1580 struct nes_ucontext *nes_ucontext = NULL;
1581 struct nes_cqp_request *cqp_request;
1583 struct nes_hw_cqp_wqe *cqp_wqe;
1584 struct nes_pbl *nespbl = NULL;
1585 struct nes_create_cq_req req;
1586 struct nes_create_cq_resp resp;
1589 u32 pbl_entries = 1;
1591 unsigned long flags;
1594 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1595 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1597 return ERR_PTR(err);
1600 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1602 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1603 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1604 return ERR_PTR(-ENOMEM);
1607 nescq->hw_cq.cq_size = max(entries + 1, 5);
1608 nescq->hw_cq.cq_number = cq_num;
1609 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1613 nes_ucontext = to_nesucontext(context);
1614 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1615 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1617 return ERR_PTR(-EFAULT);
1619 nesvnic->mcrq_ucontext = nes_ucontext;
1620 nes_ucontext->mcrqf = req.mcrqf;
1621 if (nes_ucontext->mcrqf) {
1622 if (nes_ucontext->mcrqf & 0x80000000)
1623 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1624 else if (nes_ucontext->mcrqf & 0x40000000)
1625 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1627 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1628 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1630 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1631 (unsigned long)req.user_cq_buffer, entries);
1633 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1634 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1635 list_del(&nespbl->list);
1637 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1643 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1645 return ERR_PTR(-EFAULT);
1648 pbl_entries = nespbl->pbl_size >> 3;
1649 nescq->cq_mem_size = 0;
1651 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1652 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1653 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1655 /* allocate the physical buffer space */
1656 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1657 &nescq->hw_cq.cq_pbase);
1659 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1660 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1662 return ERR_PTR(-ENOMEM);
1665 memset(mem, 0, nescq->cq_mem_size);
1666 nescq->hw_cq.cq_vbase = mem;
1667 nescq->hw_cq.cq_head = 0;
1668 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1669 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1670 (u32)nescq->hw_cq.cq_pbase);
1673 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1674 spin_lock_init(&nescq->lock);
1676 /* send CreateCQ request to CQP */
1677 cqp_request = nes_get_cqp_request(nesdev);
1678 if (cqp_request == NULL) {
1679 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1681 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1682 nescq->hw_cq.cq_pbase);
1683 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1685 return ERR_PTR(-ENOMEM);
1687 cqp_request->waiting = 1;
1688 cqp_wqe = &cqp_request->cqp_wqe;
1690 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1691 NES_CQP_CQ_CHK_OVERFLOW |
1692 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1694 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1696 if (pbl_entries != 1) {
1697 if (pbl_entries > 32) {
1699 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1700 if (nesadapter->free_4kpbl == 0) {
1701 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1702 nes_free_cqp_request(nesdev, cqp_request);
1704 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1705 nescq->hw_cq.cq_pbase);
1706 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1708 return ERR_PTR(-ENOMEM);
1710 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1711 nescq->virtual_cq = 2;
1712 nesadapter->free_4kpbl--;
1715 /* use 256 byte pbl */
1716 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1717 if (nesadapter->free_256pbl == 0) {
1718 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1719 nes_free_cqp_request(nesdev, cqp_request);
1721 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1722 nescq->hw_cq.cq_pbase);
1723 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1725 return ERR_PTR(-ENOMEM);
1727 opcode |= NES_CQP_CQ_VIRT;
1728 nescq->virtual_cq = 1;
1729 nesadapter->free_256pbl--;
1734 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1736 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1737 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1738 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1739 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1742 if (pbl_entries != 1)
1743 u64temp = (u64)nespbl->pbl_pbase;
1745 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1746 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1747 nes_ucontext->mmap_db_index[0]);
1749 u64temp = (u64)nescq->hw_cq.cq_pbase;
1750 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1752 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1753 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1754 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1755 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1756 cpu_to_le32((u32)(u64temp >> 1));
1757 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1758 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1760 atomic_set(&cqp_request->refcount, 2);
1761 nes_post_cqp_request(nesdev, cqp_request);
1764 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1765 nescq->hw_cq.cq_number);
1766 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1767 NES_EVENT_TIMEOUT * 2);
1768 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1769 nescq->hw_cq.cq_number, ret);
1770 if ((!ret) || (cqp_request->major_code)) {
1771 nes_put_cqp_request(nesdev, cqp_request);
1773 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1774 nescq->hw_cq.cq_pbase);
1775 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1777 return ERR_PTR(-EIO);
1779 nes_put_cqp_request(nesdev, cqp_request);
1782 /* free the nespbl */
1783 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1786 resp.cq_id = nescq->hw_cq.cq_number;
1787 resp.cq_size = nescq->hw_cq.cq_size;
1788 resp.mmap_db_index = 0;
1789 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1790 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1792 return ERR_PTR(-EFAULT);
1796 return &nescq->ibcq;
1803 static int nes_destroy_cq(struct ib_cq *ib_cq)
1805 struct nes_cq *nescq;
1806 struct nes_device *nesdev;
1807 struct nes_vnic *nesvnic;
1808 struct nes_adapter *nesadapter;
1809 struct nes_hw_cqp_wqe *cqp_wqe;
1810 struct nes_cqp_request *cqp_request;
1811 unsigned long flags;
1818 nescq = to_nescq(ib_cq);
1819 nesvnic = to_nesvnic(ib_cq->device);
1820 nesdev = nesvnic->nesdev;
1821 nesadapter = nesdev->nesadapter;
1823 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1825 /* Send DestroyCQ request to CQP */
1826 cqp_request = nes_get_cqp_request(nesdev);
1827 if (cqp_request == NULL) {
1828 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1831 cqp_request->waiting = 1;
1832 cqp_wqe = &cqp_request->cqp_wqe;
1833 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1834 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1835 if (nescq->virtual_cq == 1) {
1836 nesadapter->free_256pbl++;
1837 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1838 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1839 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1841 } else if (nescq->virtual_cq == 2) {
1842 nesadapter->free_4kpbl++;
1843 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1844 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1845 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1847 opcode |= NES_CQP_CQ_4KB_CHUNK;
1850 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1852 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1853 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1854 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1855 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1856 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1857 atomic_set(&cqp_request->refcount, 2);
1858 nes_post_cqp_request(nesdev, cqp_request);
1861 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1862 nescq->hw_cq.cq_number);
1863 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1865 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1866 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1867 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1868 cqp_request->minor_code);
1870 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1871 nescq->hw_cq.cq_number);
1873 } else if (cqp_request->major_code) {
1874 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1875 nescq->hw_cq.cq_number);
1880 nes_put_cqp_request(nesdev, cqp_request);
1882 if (nescq->cq_mem_size)
1883 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1884 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1893 static u32 root_256(struct nes_device *nesdev,
1894 struct nes_root_vpbl *root_vpbl,
1895 struct nes_root_vpbl *new_root,
1902 if (pbl_count_4k == 1) {
1903 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1904 512, &new_root->pbl_pbase);
1906 if (new_root->pbl_vbase == NULL)
1909 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1910 for (i = 0; i < 16; i++) {
1911 new_root->pbl_vbase[i].pa_low =
1912 cpu_to_le32((u32)leaf_pbl);
1913 new_root->pbl_vbase[i].pa_high =
1914 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1918 for (i = 3; i >= 0; i--) {
1920 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1921 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1922 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1924 for (k = 1; k < 16; k++) {
1926 root_vpbl->pbl_vbase[j + k].pa_low =
1927 cpu_to_le32((u32)leaf_pbl);
1928 root_vpbl->pbl_vbase[j + k].pa_high =
1929 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1941 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1942 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1943 dma_addr_t single_buffer, u16 pbl_count_4k,
1944 u16 residual_page_count_4k, int acc, u64 *iova_start,
1945 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1947 struct nes_hw_cqp_wqe *cqp_wqe;
1948 struct nes_cqp_request *cqp_request;
1949 unsigned long flags;
1951 struct nes_adapter *nesadapter = nesdev->nesadapter;
1955 u8 use_256_pbls = 0;
1957 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1958 struct nes_root_vpbl new_root = {0, 0, 0};
1962 /* Register the region with the adapter */
1963 cqp_request = nes_get_cqp_request(nesdev);
1964 if (cqp_request == NULL) {
1965 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1968 cqp_request->waiting = 1;
1969 cqp_wqe = &cqp_request->cqp_wqe;
1972 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1974 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1975 pbl_count_256 = (pg_cnt + 31) / 32;
1977 if (pbl_count_256 <= nesadapter->free_256pbl)
1979 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1981 } else if (pg_cnt <= 2048) {
1982 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1983 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1985 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1988 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1992 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1997 pbl_count = pbl_count_256;
1998 nesadapter->free_256pbl -= pbl_count + use_two_level;
1999 } else if (use_4k_pbls) {
2000 pbl_count = pbl_count_4k;
2001 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2003 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2004 nes_debug(NES_DBG_MR, "Out of Pbls\n");
2005 nes_free_cqp_request(nesdev, cqp_request);
2009 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2012 if (use_256_pbls && use_two_level) {
2013 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k, pbl_count_256) == 1) {
2014 if (new_root.pbl_pbase != 0)
2015 root_vpbl = &new_root;
2017 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2018 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2021 if (pbl_count_4k == 1)
2023 pbl_count = pbl_count_4k;
2025 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2026 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2029 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2031 if (use_4k_pbls == 0)
2036 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2037 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2038 if (acc & IB_ACCESS_LOCAL_WRITE)
2039 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2040 if (acc & IB_ACCESS_REMOTE_WRITE)
2041 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2042 if (acc & IB_ACCESS_REMOTE_READ)
2043 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2044 if (acc & IB_ACCESS_MW_BIND)
2045 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2047 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2048 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2049 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2050 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2052 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2053 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2054 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2055 cpu_to_le32(nespd->pd_id & 0x00007fff);
2056 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2058 if (pbl_count == 0) {
2059 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2061 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2062 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2063 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2066 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2070 atomic_set(&cqp_request->refcount, 2);
2071 nes_post_cqp_request(nesdev, cqp_request);
2074 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2076 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2077 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2078 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2079 major_code = cqp_request->major_code;
2080 nes_put_cqp_request(nesdev, cqp_request);
2082 if ((!ret || major_code) && pbl_count != 0) {
2083 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2085 nesadapter->free_256pbl += pbl_count + use_two_level;
2086 else if (use_4k_pbls)
2087 nesadapter->free_4kpbl += pbl_count + use_two_level;
2088 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2090 if (new_root.pbl_pbase)
2091 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2092 new_root.pbl_pbase);
2096 else if (major_code)
2099 *actual_pbl_cnt = pbl_count + use_two_level;
2100 *used_4k_pbls = use_4k_pbls;
2108 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2109 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2113 struct nes_pd *nespd = to_nespd(ib_pd);
2114 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2115 struct nes_device *nesdev = nesvnic->nesdev;
2116 struct nes_adapter *nesadapter = nesdev->nesadapter;
2117 struct nes_mr *nesmr;
2119 struct nes_vpbl vpbl;
2120 struct nes_root_vpbl root_vpbl;
2124 u32 next_stag_index = 0;
2126 u32 root_pbl_index = 0;
2127 u32 cur_pbl_index = 0;
2128 int err = 0, pbl_depth = 0;
2136 vpbl.pbl_vbase = NULL;
2137 root_vpbl.pbl_vbase = NULL;
2138 root_vpbl.pbl_pbase = 0;
2140 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2141 stag_key = (u8)next_stag_index;
2145 next_stag_index >>= 8;
2146 next_stag_index %= nesadapter->max_mr;
2147 if (num_phys_buf > (1024*512)) {
2148 return ERR_PTR(-E2BIG);
2151 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2152 &stag_index, &next_stag_index);
2154 return ERR_PTR(err);
2157 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2159 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2160 return ERR_PTR(-ENOMEM);
2163 for (i = 0; i < num_phys_buf; i++) {
2165 if ((i & 0x01FF) == 0) {
2166 if (root_pbl_index == 1) {
2167 /* Allocate the root PBL */
2168 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2169 &root_vpbl.pbl_pbase);
2170 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2171 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2172 if (!root_vpbl.pbl_vbase) {
2173 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2175 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2177 return ERR_PTR(-ENOMEM);
2179 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2180 if (!root_vpbl.leaf_vpbl) {
2181 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2182 root_vpbl.pbl_pbase);
2183 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2185 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2187 return ERR_PTR(-ENOMEM);
2189 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2190 root_vpbl.pbl_vbase[0].pa_high =
2191 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2192 root_vpbl.leaf_vpbl[0] = vpbl;
2194 /* Allocate a 4K buffer for the PBL */
2195 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2197 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2198 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2199 if (!vpbl.pbl_vbase) {
2200 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2201 ibmr = ERR_PTR(-ENOMEM);
2205 /* Fill in the root table */
2206 if (1 <= root_pbl_index) {
2207 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2208 cpu_to_le32((u32)vpbl.pbl_pbase);
2209 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2210 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2211 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2216 if (buffer_list[i].addr & ~PAGE_MASK) {
2217 /* TODO: Unwind allocated buffers */
2218 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2219 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2220 (unsigned int) buffer_list[i].addr);
2221 ibmr = ERR_PTR(-EINVAL);
2226 if (!buffer_list[i].size) {
2227 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2228 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2229 ibmr = ERR_PTR(-EINVAL);
2234 region_length += buffer_list[i].size;
2235 if ((i != 0) && (single_page)) {
2236 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2239 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr);
2240 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2241 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2244 stag = stag_index << 8;
2246 stag += (u32)stag_key;
2248 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2249 " length = 0x%016lX, index = 0x%08X\n",
2250 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2252 region_length -= (*iova_start)&PAGE_MASK;
2254 /* Make the leaf PBL the root if only one PBL */
2255 if (root_pbl_index == 1) {
2256 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2262 pbl_count = root_pbl_index;
2264 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2265 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2266 &nesmr->pbls_used, &nesmr->pbl_4k);
2269 nesmr->ibmr.rkey = stag;
2270 nesmr->ibmr.lkey = stag;
2271 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2272 ibmr = &nesmr->ibmr;
2275 ibmr = ERR_PTR(-ENOMEM);
2279 /* free the resources */
2280 if (root_pbl_index == 1) {
2281 /* single PBL case */
2282 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2284 for (i=0; i<root_pbl_index; i++) {
2285 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2286 root_vpbl.leaf_vpbl[i].pbl_pbase);
2288 kfree(root_vpbl.leaf_vpbl);
2289 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2290 root_vpbl.pbl_pbase);
2300 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2302 struct ib_phys_buf bl;
2305 nes_debug(NES_DBG_MR, "\n");
2307 bl.size = (u64)0xffffffffffULL;
2309 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2316 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2317 u64 virt, int acc, struct ib_udata *udata)
2322 dma_addr_t last_dma_addr = 0;
2323 dma_addr_t first_dma_addr = 0;
2324 struct nes_pd *nespd = to_nespd(pd);
2325 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2326 struct nes_device *nesdev = nesvnic->nesdev;
2327 struct nes_adapter *nesadapter = nesdev->nesadapter;
2328 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2329 struct ib_umem_chunk *chunk;
2330 struct nes_ucontext *nes_ucontext;
2331 struct nes_pbl *nespbl;
2332 struct nes_mr *nesmr;
2333 struct ib_umem *region;
2334 struct nes_mem_reg_req req;
2335 struct nes_vpbl vpbl;
2336 struct nes_root_vpbl root_vpbl;
2337 int nmap_index, page_index;
2339 int err, pbl_depth = 0;
2344 u32 next_stag_index;
2346 u32 root_pbl_index = 0;
2347 u32 cur_pbl_index = 0;
2353 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2354 if (IS_ERR(region)) {
2355 return (struct ib_mr *)region;
2358 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2359 " offset = %u, page size = %u.\n",
2360 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2361 region->offset, region->page_size);
2363 skip_pages = ((u32)region->offset) >> 12;
2365 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2366 return ERR_PTR(-EFAULT);
2367 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2369 switch (req.reg_type) {
2370 case IWNES_MEMREG_TYPE_MEM:
2373 vpbl.pbl_vbase = NULL;
2374 root_vpbl.pbl_vbase = NULL;
2375 root_vpbl.pbl_pbase = 0;
2377 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2378 stag_key = (u8)next_stag_index;
2380 driver_key = next_stag_index & 0x70000000;
2382 next_stag_index >>= 8;
2383 next_stag_index %= nesadapter->max_mr;
2385 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2386 nesadapter->max_mr, &stag_index, &next_stag_index);
2388 ib_umem_release(region);
2389 return ERR_PTR(err);
2392 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2394 ib_umem_release(region);
2395 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2396 return ERR_PTR(-ENOMEM);
2398 nesmr->region = region;
2400 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2401 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2402 chunk->nents, chunk->nmap);
2403 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2404 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2405 ib_umem_release(region);
2406 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2407 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2408 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2409 ibmr = ERR_PTR(-EINVAL);
2411 goto reg_user_mr_err;
2414 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2415 ib_umem_release(region);
2416 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2418 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2419 ibmr = ERR_PTR(-EINVAL);
2421 goto reg_user_mr_err;
2424 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2425 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2426 region_length -= skip_pages << 12;
2427 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2429 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2431 if ((page_count&0x01FF) == 0) {
2432 if (page_count >= 1024 * 512) {
2433 ib_umem_release(region);
2434 nes_free_resource(nesadapter,
2435 nesadapter->allocated_mrs, stag_index);
2437 ibmr = ERR_PTR(-E2BIG);
2438 goto reg_user_mr_err;
2440 if (root_pbl_index == 1) {
2441 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2442 8192, &root_vpbl.pbl_pbase);
2443 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2444 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2445 if (!root_vpbl.pbl_vbase) {
2446 ib_umem_release(region);
2447 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2449 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2452 ibmr = ERR_PTR(-ENOMEM);
2453 goto reg_user_mr_err;
2455 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2457 if (!root_vpbl.leaf_vpbl) {
2458 ib_umem_release(region);
2459 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2460 root_vpbl.pbl_pbase);
2461 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2463 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2466 ibmr = ERR_PTR(-ENOMEM);
2467 goto reg_user_mr_err;
2469 root_vpbl.pbl_vbase[0].pa_low =
2470 cpu_to_le32((u32)vpbl.pbl_pbase);
2471 root_vpbl.pbl_vbase[0].pa_high =
2472 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2473 root_vpbl.leaf_vpbl[0] = vpbl;
2475 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2477 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2478 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2479 if (!vpbl.pbl_vbase) {
2480 ib_umem_release(region);
2481 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2482 ibmr = ERR_PTR(-ENOMEM);
2484 goto reg_user_mr_err;
2486 if (1 <= root_pbl_index) {
2487 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2488 cpu_to_le32((u32)vpbl.pbl_pbase);
2489 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2490 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2491 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2497 if (page_count != 0) {
2498 if ((last_dma_addr+4096) !=
2499 (sg_dma_address(&chunk->page_list[nmap_index])+
2502 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2505 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2507 last_dma_addr = first_dma_addr;
2511 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2512 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2513 (page_index*4096)));
2514 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2515 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2516 (page_index*4096))) >> 32)));
2523 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2524 " stag_key=0x%08x\n",
2525 stag_index, driver_key, stag_key);
2526 stag = stag_index << 8;
2528 stag += (u32)stag_key;
2534 /* Make the leaf PBL the root if only one PBL */
2535 if (root_pbl_index == 1) {
2536 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2542 pbl_count = root_pbl_index;
2545 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2546 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2547 stag, (unsigned int)iova_start,
2548 (unsigned int)region_length, stag_index,
2549 (unsigned long long)region->length, pbl_count);
2550 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2551 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2552 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2554 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2557 nesmr->ibmr.rkey = stag;
2558 nesmr->ibmr.lkey = stag;
2559 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2560 ibmr = &nesmr->ibmr;
2562 ib_umem_release(region);
2564 ibmr = ERR_PTR(-ENOMEM);
2568 /* free the resources */
2569 if (root_pbl_index == 1) {
2570 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2573 for (page_index=0; page_index<root_pbl_index; page_index++) {
2574 pci_free_consistent(nesdev->pcidev, 4096,
2575 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2576 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2578 kfree(root_vpbl.leaf_vpbl);
2579 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2580 root_vpbl.pbl_pbase);
2583 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2586 case IWNES_MEMREG_TYPE_QP:
2587 case IWNES_MEMREG_TYPE_CQ:
2588 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2590 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2591 ib_umem_release(region);
2592 return ERR_PTR(-ENOMEM);
2594 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2596 ib_umem_release(region);
2598 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2599 return ERR_PTR(-ENOMEM);
2601 nesmr->region = region;
2602 nes_ucontext = to_nesucontext(pd->uobject->context);
2603 pbl_depth = region->length >> 12;
2604 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2605 nespbl->pbl_size = pbl_depth*sizeof(u64);
2606 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2607 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2609 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2612 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2613 nespbl->pbl_size, pbl_depth);
2614 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2615 &nespbl->pbl_pbase);
2617 ib_umem_release(region);
2620 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2621 return ERR_PTR(-ENOMEM);
2624 nespbl->pbl_vbase = (u64 *)pbl;
2625 nespbl->user_base = start;
2626 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2627 " pbl_vbase=%p user_base=0x%lx\n",
2628 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2629 (void *) nespbl->pbl_vbase, nespbl->user_base);
2631 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2632 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2633 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2634 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2635 nespbl->page = sg_page(&chunk->page_list[0]);
2636 for (page_index=0; page_index<chunk_pages; page_index++) {
2637 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2638 (sg_dma_address(&chunk->page_list[nmap_index])+
2639 (page_index*4096)));
2640 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2641 (sg_dma_address(&chunk->page_list[nmap_index])+
2642 (page_index*4096)))>>32);
2643 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2644 (unsigned long long)*pbl,
2645 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2650 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2651 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2653 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2655 nesmr->ibmr.rkey = -1;
2656 nesmr->ibmr.lkey = -1;
2657 nesmr->mode = req.reg_type;
2658 return &nesmr->ibmr;
2661 return ERR_PTR(-ENOSYS);
2668 static int nes_dereg_mr(struct ib_mr *ib_mr)
2670 struct nes_mr *nesmr = to_nesmr(ib_mr);
2671 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2672 struct nes_device *nesdev = nesvnic->nesdev;
2673 struct nes_adapter *nesadapter = nesdev->nesadapter;
2674 struct nes_hw_cqp_wqe *cqp_wqe;
2675 struct nes_cqp_request *cqp_request;
2676 unsigned long flags;
2681 if (nesmr->region) {
2682 ib_umem_release(nesmr->region);
2684 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2689 /* Deallocate the region with the adapter */
2691 cqp_request = nes_get_cqp_request(nesdev);
2692 if (cqp_request == NULL) {
2693 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2696 cqp_request->waiting = 1;
2697 cqp_wqe = &cqp_request->cqp_wqe;
2699 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2700 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2701 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2702 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2703 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2705 atomic_set(&cqp_request->refcount, 2);
2706 nes_post_cqp_request(nesdev, cqp_request);
2709 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2710 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2712 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2713 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2714 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2716 major_code = cqp_request->major_code;
2717 minor_code = cqp_request->minor_code;
2719 nes_put_cqp_request(nesdev, cqp_request);
2722 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2723 " ib_mr=%p, rkey = 0x%08X\n",
2724 ib_mr, ib_mr->rkey);
2726 } else if (major_code) {
2727 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2728 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2729 major_code, minor_code, ib_mr, ib_mr->rkey);
2733 if (nesmr->pbls_used != 0) {
2734 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2735 if (nesmr->pbl_4k) {
2736 nesadapter->free_4kpbl += nesmr->pbls_used;
2737 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2738 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2739 "exceeded the max(%u)\n",
2740 nesadapter->free_4kpbl,
2741 nesadapter->max_4kpbl);
2743 nesadapter->free_256pbl += nesmr->pbls_used;
2744 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2745 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2746 "exceeded the max(%u)\n",
2747 nesadapter->free_256pbl,
2748 nesadapter->max_256pbl);
2750 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2752 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2753 (ib_mr->rkey & 0x0fffff00) >> 8);
2764 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2767 struct nes_ib_device *nesibdev =
2768 container_of(dev, struct nes_ib_device, ibdev.dev);
2769 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2771 nes_debug(NES_DBG_INIT, "\n");
2772 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2779 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2782 struct nes_ib_device *nesibdev =
2783 container_of(dev, struct nes_ib_device, ibdev.dev);
2784 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2786 nes_debug(NES_DBG_INIT, "\n");
2787 return sprintf(buf, "%x.%x.%x\n",
2788 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 32),
2789 (int)(nesvnic->nesdev->nesadapter->fw_ver >> 16) & 0xffff,
2790 (int)(nesvnic->nesdev->nesadapter->fw_ver & 0xffff));
2797 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2800 nes_debug(NES_DBG_INIT, "\n");
2801 return sprintf(buf, "NES020\n");
2808 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2811 nes_debug(NES_DBG_INIT, "\n");
2812 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2816 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2817 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2818 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2819 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2821 static struct device_attribute *nes_dev_attributes[] = {
2832 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2833 int attr_mask, struct ib_qp_init_attr *init_attr)
2835 struct nes_qp *nesqp = to_nesqp(ibqp);
2837 nes_debug(NES_DBG_QP, "\n");
2839 attr->qp_access_flags = 0;
2840 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2841 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2842 attr->cap.max_recv_sge = 1;
2843 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2844 init_attr->cap.max_inline_data = 0;
2846 init_attr->cap.max_inline_data = 64;
2849 init_attr->event_handler = nesqp->ibqp.event_handler;
2850 init_attr->qp_context = nesqp->ibqp.qp_context;
2851 init_attr->send_cq = nesqp->ibqp.send_cq;
2852 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2853 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2854 init_attr->cap = attr->cap;
2863 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2864 u32 next_iwarp_state, u32 wait_completion)
2866 struct nes_hw_cqp_wqe *cqp_wqe;
2867 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2868 /* struct iw_cm_event cm_event; */
2869 struct nes_cqp_request *cqp_request;
2873 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2874 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2876 cqp_request = nes_get_cqp_request(nesdev);
2877 if (cqp_request == NULL) {
2878 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2881 if (wait_completion) {
2882 cqp_request->waiting = 1;
2884 cqp_request->waiting = 0;
2886 cqp_wqe = &cqp_request->cqp_wqe;
2888 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2889 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2890 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2891 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2892 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2893 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2894 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2896 atomic_set(&cqp_request->refcount, 2);
2897 nes_post_cqp_request(nesdev, cqp_request);
2900 if (wait_completion) {
2901 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2902 nesqp->hwqp.qp_id); */
2903 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2905 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2906 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2907 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2908 major_code = cqp_request->major_code;
2910 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2911 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2912 nesqp->hwqp.qp_id, cqp_request->major_code,
2913 cqp_request->minor_code, next_iwarp_state);
2916 nes_put_cqp_request(nesdev, cqp_request);
2920 else if (major_code)
2933 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2934 int attr_mask, struct ib_udata *udata)
2936 struct nes_qp *nesqp = to_nesqp(ibqp);
2937 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2938 struct nes_device *nesdev = nesvnic->nesdev;
2941 u32 next_iwarp_state = 0;
2943 unsigned long qplockflags;
2945 u16 original_last_aeq;
2946 u8 issue_modify_qp = 0;
2947 u8 issue_disconnect = 0;
2950 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2951 " iwarp_state=0x%X, refcount=%d\n",
2952 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2953 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2955 spin_lock_irqsave(&nesqp->lock, qplockflags);
2957 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2958 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2959 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2960 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2962 if (attr_mask & IB_QP_STATE) {
2963 switch (attr->qp_state) {
2965 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2967 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2968 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2971 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2972 issue_modify_qp = 1;
2975 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2977 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2978 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2981 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2982 issue_modify_qp = 1;
2985 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2987 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2988 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2991 if (nesqp->cm_id == NULL) {
2992 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2993 nesqp->hwqp.qp_id );
2994 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2997 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2998 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2999 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3000 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3001 issue_modify_qp = 1;
3002 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3003 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3004 nesqp->hte_added = 1;
3007 issue_modify_qp = 1;
3008 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3009 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3010 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3011 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3014 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3015 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3016 " ignored due to current iWARP state\n",
3018 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3021 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3022 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3023 " already done based on hw state.\n",
3025 issue_modify_qp = 0;
3026 nesqp->in_disconnect = 0;
3028 switch (nesqp->hw_iwarp_state) {
3029 case NES_AEQE_IWARP_STATE_CLOSING:
3030 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3031 case NES_AEQE_IWARP_STATE_TERMINATE:
3032 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3034 case NES_AEQE_IWARP_STATE_ERROR:
3035 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3038 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3039 nesqp->in_disconnect = 1;
3040 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3046 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3048 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3049 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3052 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3053 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3054 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3055 issue_modify_qp = 1;
3056 nesqp->in_disconnect = 1;
3060 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3061 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3064 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3066 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3067 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3068 if (nesqp->hte_added) {
3069 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3070 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3071 nesqp->hte_added = 0;
3073 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3074 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3075 next_iwarp_state |= NES_CQP_QP_RESET;
3076 nesqp->in_disconnect = 1;
3078 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3079 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3082 issue_modify_qp = 1;
3083 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3086 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3091 nesqp->ibqp_state = attr->qp_state;
3092 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3093 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3094 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3095 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3096 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3097 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3098 nesqp->iwarp_state);
3099 issue_disconnect = 1;
3101 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3102 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3103 nesqp->iwarp_state);
3107 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3108 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3109 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3110 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3111 issue_modify_qp = 1;
3113 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3114 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3115 issue_modify_qp = 1;
3117 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3118 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3119 issue_modify_qp = 1;
3121 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3122 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3123 issue_modify_qp = 1;
3126 if (nesqp->user_mode) {
3127 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3128 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3129 issue_modify_qp = 1;
3133 original_last_aeq = nesqp->last_aeq;
3134 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3136 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3141 if (issue_modify_qp) {
3142 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3143 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
3145 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3146 " failed for QP%u.\n",
3147 next_iwarp_state, nesqp->hwqp.qp_id);
3151 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3152 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3153 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3154 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3155 original_last_aeq, nesqp->last_aeq);
3157 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3160 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3161 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3162 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3163 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3164 original_last_aeq, nesqp->last_aeq);
3165 /* this one is for the cm_disconnect thread */
3166 spin_lock_irqsave(&nesqp->lock, qplockflags);
3167 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3168 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3169 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3170 nes_cm_disconn(nesqp);
3172 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3173 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3176 spin_lock_irqsave(&nesqp->lock, qplockflags);
3178 /* These two are for the timer thread */
3179 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3180 nesqp->cm_id->add_ref(nesqp->cm_id);
3181 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3182 " need ae to finish up, original_last_aeq = 0x%04X."
3183 " last_aeq = 0x%04X, scheduling timer.\n",
3184 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3185 original_last_aeq, nesqp->last_aeq);
3186 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3188 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3190 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3191 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3192 " need ae to finish up, original_last_aeq = 0x%04X."
3193 " last_aeq = 0x%04X.\n",
3194 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3195 original_last_aeq, nesqp->last_aeq);
3199 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3200 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3201 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3202 original_last_aeq, nesqp->last_aeq);
3205 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3206 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3207 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3208 original_last_aeq, nesqp->last_aeq);
3213 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3214 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3221 * nes_muticast_attach
3223 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3225 nes_debug(NES_DBG_INIT, "\n");
3231 * nes_multicast_detach
3233 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3235 nes_debug(NES_DBG_INIT, "\n");
3243 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3244 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3245 struct ib_mad *in_mad, struct ib_mad *out_mad)
3247 nes_debug(NES_DBG_INIT, "\n");
3252 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3255 int total_payload_length = 0;
3256 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3257 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3258 ib_wr->sg_list[sge_index].addr);
3259 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3260 ib_wr->sg_list[sge_index].length);
3262 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3263 (ib_wr->sg_list[sge_index].lkey));
3265 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3267 total_payload_length += ib_wr->sg_list[sge_index].length;
3269 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3270 total_payload_length);
3271 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3272 total_payload_length);
3278 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3279 struct ib_send_wr **bad_wr)
3282 unsigned long flags = 0;
3283 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3284 struct nes_device *nesdev = nesvnic->nesdev;
3285 struct nes_qp *nesqp = to_nesqp(ibqp);
3286 struct nes_hw_qp_wqe *wqe;
3288 u32 qsize = nesqp->hwqp.sq_size;
3293 u32 total_payload_length;
3298 total_payload_length = 0;
3300 if (nesqp->ibqp_state > IB_QPS_RTS)
3303 spin_lock_irqsave(&nesqp->lock, flags);
3305 head = nesqp->hwqp.sq_head;
3308 /* Check for SQ overflow */
3309 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3314 wqe = &nesqp->hwqp.sq_vbase[head];
3315 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3316 nesqp->hwqp.qp_id, wqe, head); */
3317 nes_fill_init_qp_wqe(wqe, nesqp, head);
3318 u64temp = (u64)(ib_wr->wr_id);
3319 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3321 switch (ib_wr->opcode) {
3323 if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3324 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3326 wqe_misc = NES_IWARP_SQ_OP_SEND;
3328 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3332 if (ib_wr->send_flags & IB_SEND_FENCE) {
3333 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3335 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3336 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3337 (ib_wr->sg_list[0].length <= 64)) {
3338 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3339 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3340 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3341 ib_wr->sg_list[0].length);
3342 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3344 fill_wqe_sg_send(wqe, ib_wr, 1);
3348 case IB_WR_RDMA_WRITE:
3349 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3350 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3351 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3353 nesdev->nesadapter->max_sge);
3357 if (ib_wr->send_flags & IB_SEND_FENCE) {
3358 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3361 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3362 ib_wr->wr.rdma.rkey);
3363 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3364 ib_wr->wr.rdma.remote_addr);
3366 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3367 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3368 (ib_wr->sg_list[0].length <= 64)) {
3369 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3370 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3371 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3372 ib_wr->sg_list[0].length);
3373 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3375 fill_wqe_sg_send(wqe, ib_wr, 1);
3377 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3378 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3380 case IB_WR_RDMA_READ:
3381 /* iWARP only supports 1 sge for RDMA reads */
3382 if (ib_wr->num_sge > 1) {
3383 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3388 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3389 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3390 ib_wr->wr.rdma.remote_addr);
3391 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3392 ib_wr->wr.rdma.rkey);
3393 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3394 ib_wr->sg_list->length);
3395 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3396 ib_wr->sg_list->addr);
3397 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3398 ib_wr->sg_list->lkey);
3406 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3407 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3409 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3411 ib_wr = ib_wr->next;
3419 nesqp->hwqp.sq_head = head;
3422 counter = min(wqe_count, ((u32)255));
3423 wqe_count -= counter;
3424 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3425 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3428 spin_unlock_irqrestore(&nesqp->lock, flags);
3439 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3440 struct ib_recv_wr **bad_wr)
3443 unsigned long flags = 0;
3444 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3445 struct nes_device *nesdev = nesvnic->nesdev;
3446 struct nes_qp *nesqp = to_nesqp(ibqp);
3447 struct nes_hw_qp_wqe *wqe;
3450 u32 qsize = nesqp->hwqp.rq_size;
3454 u32 total_payload_length;
3456 if (nesqp->ibqp_state > IB_QPS_RTS)
3459 spin_lock_irqsave(&nesqp->lock, flags);
3461 head = nesqp->hwqp.rq_head;
3464 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3468 /* Check for RQ overflow */
3469 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3474 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3475 wqe = &nesqp->hwqp.rq_vbase[head];
3477 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3478 nesqp->hwqp.qp_id, wqe, head); */
3479 nes_fill_init_qp_wqe(wqe, nesqp, head);
3480 u64temp = (u64)(ib_wr->wr_id);
3481 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3483 total_payload_length = 0;
3484 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3485 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3486 ib_wr->sg_list[sge_index].addr);
3487 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3488 ib_wr->sg_list[sge_index].length);
3489 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3490 ib_wr->sg_list[sge_index].lkey);
3492 total_payload_length += ib_wr->sg_list[sge_index].length;
3494 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3495 total_payload_length);
3497 ib_wr = ib_wr->next;
3504 nesqp->hwqp.rq_head = head;
3507 counter = min(wqe_count, ((u32)255));
3508 wqe_count -= counter;
3509 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3512 spin_unlock_irqrestore(&nesqp->lock, flags);
3523 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3528 unsigned long flags = 0;
3529 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3530 struct nes_device *nesdev = nesvnic->nesdev;
3531 struct nes_cq *nescq = to_nescq(ibcq);
3532 struct nes_qp *nesqp;
3533 struct nes_hw_cqe cqe;
3542 nes_debug(NES_DBG_CQ, "\n");
3544 spin_lock_irqsave(&nescq->lock, flags);
3546 head = nescq->hw_cq.cq_head;
3547 cq_size = nescq->hw_cq.cq_size;
3549 while (cqe_count < num_entries) {
3550 if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3553 * Make sure we read CQ entry contents *after*
3554 * we've checked the valid bit.
3558 cqe = nescq->hw_cq.cq_vbase[head];
3559 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3560 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3561 wqe_index = u32temp &
3562 (nesdev->nesadapter->max_qp_wr - 1);
3563 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3564 /* parse CQE, get completion context from WQE (either rq or sq */
3565 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3567 nesqp = *((struct nes_qp **)&u64temp);
3568 memset(entry, 0, sizeof *entry);
3569 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3570 entry->status = IB_WC_SUCCESS;
3572 entry->status = IB_WC_WR_FLUSH_ERR;
3575 entry->qp = &nesqp->ibqp;
3576 entry->src_qp = nesqp->hwqp.qp_id;
3578 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3579 if (nesqp->skip_lsmm) {
3580 nesqp->skip_lsmm = 0;
3581 wq_tail = nesqp->hwqp.sq_tail++;
3584 /* Working on a SQ Completion*/
3585 wq_tail = wqe_index;
3586 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3587 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3588 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3589 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3590 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3591 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3592 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3594 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3595 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3596 case NES_IWARP_SQ_OP_RDMAW:
3597 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3598 entry->opcode = IB_WC_RDMA_WRITE;
3600 case NES_IWARP_SQ_OP_RDMAR:
3601 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3602 entry->opcode = IB_WC_RDMA_READ;
3603 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3604 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3606 case NES_IWARP_SQ_OP_SENDINV:
3607 case NES_IWARP_SQ_OP_SENDSEINV:
3608 case NES_IWARP_SQ_OP_SEND:
3609 case NES_IWARP_SQ_OP_SENDSE:
3610 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3611 entry->opcode = IB_WC_SEND;
3615 /* Working on a RQ Completion*/
3616 wq_tail = wqe_index;
3617 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3618 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3619 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3620 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3621 entry->opcode = IB_WC_RECV;
3623 entry->wr_id = wrid;
3625 if (++head >= cq_size)
3628 nescq->polled_completions++;
3629 if ((nescq->polled_completions > (cq_size / 2)) ||
3630 (nescq->polled_completions == 255)) {
3631 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3632 " are pending %u of %u.\n",
3633 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3634 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3635 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3636 nescq->polled_completions = 0;
3643 if (nescq->polled_completions) {
3644 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3645 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3646 nescq->polled_completions = 0;
3649 nescq->hw_cq.cq_head = head;
3650 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3651 cqe_count, nescq->hw_cq.cq_number);
3653 spin_unlock_irqrestore(&nescq->lock, flags);
3662 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3664 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3665 struct nes_device *nesdev = nesvnic->nesdev;
3666 struct nes_cq *nescq = to_nescq(ibcq);
3669 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3670 nescq->hw_cq.cq_number);
3672 cq_arm = nescq->hw_cq.cq_number;
3673 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3674 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3675 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3676 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3680 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3681 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3688 * nes_init_ofa_device
3690 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3692 struct nes_ib_device *nesibdev;
3693 struct nes_vnic *nesvnic = netdev_priv(netdev);
3694 struct nes_device *nesdev = nesvnic->nesdev;
3696 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3697 if (nesibdev == NULL) {
3700 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3701 nesibdev->ibdev.owner = THIS_MODULE;
3703 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3704 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3705 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3707 nesibdev->ibdev.uverbs_cmd_mask =
3708 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3709 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3710 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3711 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3712 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3713 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3714 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3715 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3716 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3717 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3718 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3719 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3720 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3721 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3722 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3723 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3724 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3725 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3726 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3727 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3728 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3729 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3731 nesibdev->ibdev.phys_port_cnt = 1;
3732 nesibdev->ibdev.num_comp_vectors = 1;
3733 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3734 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3735 nesibdev->ibdev.query_device = nes_query_device;
3736 nesibdev->ibdev.query_port = nes_query_port;
3737 nesibdev->ibdev.modify_port = nes_modify_port;
3738 nesibdev->ibdev.query_pkey = nes_query_pkey;
3739 nesibdev->ibdev.query_gid = nes_query_gid;
3740 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3741 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3742 nesibdev->ibdev.mmap = nes_mmap;
3743 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3744 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3745 nesibdev->ibdev.create_ah = nes_create_ah;
3746 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3747 nesibdev->ibdev.create_qp = nes_create_qp;
3748 nesibdev->ibdev.modify_qp = nes_modify_qp;
3749 nesibdev->ibdev.query_qp = nes_query_qp;
3750 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3751 nesibdev->ibdev.create_cq = nes_create_cq;
3752 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3753 nesibdev->ibdev.poll_cq = nes_poll_cq;
3754 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3755 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3756 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3757 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3758 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3759 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3760 nesibdev->ibdev.bind_mw = nes_bind_mw;
3762 nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3763 nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3764 nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3765 nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3767 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3768 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3769 nesibdev->ibdev.process_mad = nes_process_mad;
3771 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3772 nesibdev->ibdev.post_send = nes_post_send;
3773 nesibdev->ibdev.post_recv = nes_post_recv;
3775 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3776 if (nesibdev->ibdev.iwcm == NULL) {
3777 ib_dealloc_device(&nesibdev->ibdev);
3780 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3781 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3782 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3783 nesibdev->ibdev.iwcm->connect = nes_connect;
3784 nesibdev->ibdev.iwcm->accept = nes_accept;
3785 nesibdev->ibdev.iwcm->reject = nes_reject;
3786 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3787 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3794 * nes_destroy_ofa_device
3796 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3798 if (nesibdev == NULL)
3801 nes_unregister_ofa_device(nesibdev);
3803 kfree(nesibdev->ibdev.iwcm);
3804 ib_dealloc_device(&nesibdev->ibdev);
3809 * nes_register_ofa_device
3811 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3813 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3814 struct nes_device *nesdev = nesvnic->nesdev;
3815 struct nes_adapter *nesadapter = nesdev->nesadapter;
3818 ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3823 /* Get the resources allocated to this device */
3824 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3825 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3826 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3827 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3829 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3830 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3834 device_remove_file(&nesibdev->ibdev.dev,
3835 nes_dev_attributes[i]);
3837 ib_unregister_device(&nesibdev->ibdev);
3842 nesvnic->of_device_registered = 1;
3849 * nes_unregister_ofa_device
3851 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3853 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3856 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3857 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3860 if (nesvnic->of_device_registered) {
3861 ib_unregister_device(&nesibdev->ibdev);
3864 nesvnic->of_device_registered = 0;