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_rd_atom;
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);
1367 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1368 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1370 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1371 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1372 u64temp = (u64)nesqp->hwqp.sq_pbase;
1373 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1374 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1378 u64temp = (u64)nesqp->hwqp.sq_pbase;
1379 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1380 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1381 u64temp = (u64)nesqp->hwqp.rq_pbase;
1382 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1383 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1385 u64temp = (u64)nesqp->pbl_pbase;
1386 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1387 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1390 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1391 nesvnic->next_qp_nic_index,
1392 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1393 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1394 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1395 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1396 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1397 nesvnic->next_qp_nic_index++;
1398 if ((nesvnic->next_qp_nic_index > 3) ||
1399 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1400 nesvnic->next_qp_nic_index = 0;
1402 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1404 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1405 u64temp = (u64)nesqp->hwqp.q2_pbase;
1406 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1407 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1408 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1409 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1410 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1411 ((((u32)nesadapter->max_irrq_wr) <<
1412 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1413 if (disable_mpa_crc) {
1414 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1415 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1420 cqp_request = nes_get_cqp_request(nesdev);
1421 if (cqp_request == NULL) {
1422 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1423 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1424 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1425 kfree(nesqp->allocated_buffer);
1426 return ERR_PTR(-ENOMEM);
1428 cqp_request->waiting = 1;
1429 cqp_wqe = &cqp_request->cqp_wqe;
1432 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1433 NES_CQP_QP_IWARP_STATE_IDLE;
1435 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1436 NES_CQP_QP_IWARP_STATE_IDLE;
1438 opcode |= NES_CQP_QP_CQS_VALID;
1439 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1440 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1441 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1443 u64temp = (u64)nesqp->nesqp_context_pbase;
1444 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1446 atomic_set(&cqp_request->refcount, 2);
1447 nes_post_cqp_request(nesdev, cqp_request);
1450 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1452 ret = wait_event_timeout(cqp_request->waitq,
1453 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1454 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1455 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1456 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1457 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1458 cqp_request->major_code, cqp_request->minor_code);
1459 if ((!ret) || (cqp_request->major_code)) {
1460 nes_put_cqp_request(nesdev, cqp_request);
1461 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1462 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1463 kfree(nesqp->allocated_buffer);
1465 return ERR_PTR(-ETIME);
1467 return ERR_PTR(-EIO);
1471 nes_put_cqp_request(nesdev, cqp_request);
1473 if (ibpd->uobject) {
1474 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1475 uresp.actual_sq_size = sq_size;
1476 uresp.actual_rq_size = rq_size;
1477 uresp.qp_id = nesqp->hwqp.qp_id;
1478 uresp.nes_drv_opt = nes_drv_opt;
1479 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1480 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1481 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1482 kfree(nesqp->allocated_buffer);
1483 return ERR_PTR(-EFAULT);
1487 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1488 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1489 spin_lock_init(&nesqp->lock);
1490 init_waitqueue_head(&nesqp->state_waitq);
1491 init_waitqueue_head(&nesqp->kick_waitq);
1492 nes_add_ref(&nesqp->ibqp);
1495 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1496 return ERR_PTR(-EINVAL);
1499 /* update the QP table */
1500 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1501 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1502 atomic_read(&nesvnic->netdev->refcnt));
1504 return &nesqp->ibqp;
1511 static int nes_destroy_qp(struct ib_qp *ibqp)
1513 struct nes_qp *nesqp = to_nesqp(ibqp);
1514 /* struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); */
1515 struct nes_ucontext *nes_ucontext;
1516 struct ib_qp_attr attr;
1517 struct iw_cm_id *cm_id;
1518 struct iw_cm_event cm_event;
1521 atomic_inc(&sw_qps_destroyed);
1522 nesqp->destroyed = 1;
1524 /* Blow away the connection if it exists. */
1525 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1526 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1527 attr.qp_state = IB_QPS_ERR;
1528 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1531 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1532 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1533 cm_id = nesqp->cm_id;
1534 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1535 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1536 cm_event.local_addr = cm_id->local_addr;
1537 cm_event.remote_addr = cm_id->remote_addr;
1538 cm_event.private_data = NULL;
1539 cm_event.private_data_len = 0;
1541 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1542 "QP%u. cm_id = %p, refcount = %u. \n",
1543 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1545 cm_id->rem_ref(cm_id);
1546 ret = cm_id->event_handler(cm_id, &cm_event);
1548 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1552 if (nesqp->user_mode) {
1553 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1554 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1555 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1556 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1557 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1558 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1561 if (nesqp->pbl_pbase)
1562 kunmap(nesqp->page);
1565 nes_rem_ref(&nesqp->ibqp);
1573 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1575 struct ib_ucontext *context, struct ib_udata *udata)
1578 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1579 struct nes_device *nesdev = nesvnic->nesdev;
1580 struct nes_adapter *nesadapter = nesdev->nesadapter;
1581 struct nes_cq *nescq;
1582 struct nes_ucontext *nes_ucontext = NULL;
1583 struct nes_cqp_request *cqp_request;
1585 struct nes_hw_cqp_wqe *cqp_wqe;
1586 struct nes_pbl *nespbl = NULL;
1587 struct nes_create_cq_req req;
1588 struct nes_create_cq_resp resp;
1591 u32 pbl_entries = 1;
1593 unsigned long flags;
1596 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1597 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1599 return ERR_PTR(err);
1602 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1604 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1605 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1606 return ERR_PTR(-ENOMEM);
1609 nescq->hw_cq.cq_size = max(entries + 1, 5);
1610 nescq->hw_cq.cq_number = cq_num;
1611 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1615 nes_ucontext = to_nesucontext(context);
1616 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1617 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1619 return ERR_PTR(-EFAULT);
1621 nesvnic->mcrq_ucontext = nes_ucontext;
1622 nes_ucontext->mcrqf = req.mcrqf;
1623 if (nes_ucontext->mcrqf) {
1624 if (nes_ucontext->mcrqf & 0x80000000)
1625 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1626 else if (nes_ucontext->mcrqf & 0x40000000)
1627 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1629 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1630 nescq->mcrqf = nes_ucontext->mcrqf;
1631 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1633 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1634 (unsigned long)req.user_cq_buffer, entries);
1636 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1637 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1638 list_del(&nespbl->list);
1640 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1646 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1648 return ERR_PTR(-EFAULT);
1651 pbl_entries = nespbl->pbl_size >> 3;
1652 nescq->cq_mem_size = 0;
1654 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1655 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1656 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1658 /* allocate the physical buffer space */
1659 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1660 &nescq->hw_cq.cq_pbase);
1662 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1663 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1665 return ERR_PTR(-ENOMEM);
1668 memset(mem, 0, nescq->cq_mem_size);
1669 nescq->hw_cq.cq_vbase = mem;
1670 nescq->hw_cq.cq_head = 0;
1671 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1672 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1673 (u32)nescq->hw_cq.cq_pbase);
1676 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1677 spin_lock_init(&nescq->lock);
1679 /* send CreateCQ request to CQP */
1680 cqp_request = nes_get_cqp_request(nesdev);
1681 if (cqp_request == NULL) {
1682 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1684 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1685 nescq->hw_cq.cq_pbase);
1687 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1688 nespbl->pbl_vbase, nespbl->pbl_pbase);
1692 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1694 return ERR_PTR(-ENOMEM);
1696 cqp_request->waiting = 1;
1697 cqp_wqe = &cqp_request->cqp_wqe;
1699 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1700 NES_CQP_CQ_CHK_OVERFLOW |
1701 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1703 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1705 if (pbl_entries != 1) {
1706 if (pbl_entries > 32) {
1708 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1709 if (nesadapter->free_4kpbl == 0) {
1710 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1711 nes_free_cqp_request(nesdev, cqp_request);
1713 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1714 nescq->hw_cq.cq_pbase);
1716 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1717 nespbl->pbl_vbase, nespbl->pbl_pbase);
1720 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1722 return ERR_PTR(-ENOMEM);
1724 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1725 nescq->virtual_cq = 2;
1726 nesadapter->free_4kpbl--;
1729 /* use 256 byte pbl */
1730 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1731 if (nesadapter->free_256pbl == 0) {
1732 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1733 nes_free_cqp_request(nesdev, cqp_request);
1735 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1736 nescq->hw_cq.cq_pbase);
1738 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1739 nespbl->pbl_vbase, nespbl->pbl_pbase);
1742 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1744 return ERR_PTR(-ENOMEM);
1746 opcode |= NES_CQP_CQ_VIRT;
1747 nescq->virtual_cq = 1;
1748 nesadapter->free_256pbl--;
1753 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1755 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1756 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1757 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1758 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1761 if (pbl_entries != 1)
1762 u64temp = (u64)nespbl->pbl_pbase;
1764 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1765 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1766 nes_ucontext->mmap_db_index[0]);
1768 u64temp = (u64)nescq->hw_cq.cq_pbase;
1769 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1771 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1772 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1773 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1774 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1775 cpu_to_le32((u32)(u64temp >> 1));
1776 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1777 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1779 atomic_set(&cqp_request->refcount, 2);
1780 nes_post_cqp_request(nesdev, cqp_request);
1783 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1784 nescq->hw_cq.cq_number);
1785 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1786 NES_EVENT_TIMEOUT * 2);
1787 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1788 nescq->hw_cq.cq_number, ret);
1789 if ((!ret) || (cqp_request->major_code)) {
1790 nes_put_cqp_request(nesdev, cqp_request);
1792 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1793 nescq->hw_cq.cq_pbase);
1795 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1796 nespbl->pbl_vbase, nespbl->pbl_pbase);
1799 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1801 return ERR_PTR(-EIO);
1803 nes_put_cqp_request(nesdev, cqp_request);
1806 /* free the nespbl */
1807 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1810 resp.cq_id = nescq->hw_cq.cq_number;
1811 resp.cq_size = nescq->hw_cq.cq_size;
1812 resp.mmap_db_index = 0;
1813 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1814 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1816 return ERR_PTR(-EFAULT);
1820 return &nescq->ibcq;
1827 static int nes_destroy_cq(struct ib_cq *ib_cq)
1829 struct nes_cq *nescq;
1830 struct nes_device *nesdev;
1831 struct nes_vnic *nesvnic;
1832 struct nes_adapter *nesadapter;
1833 struct nes_hw_cqp_wqe *cqp_wqe;
1834 struct nes_cqp_request *cqp_request;
1835 unsigned long flags;
1842 nescq = to_nescq(ib_cq);
1843 nesvnic = to_nesvnic(ib_cq->device);
1844 nesdev = nesvnic->nesdev;
1845 nesadapter = nesdev->nesadapter;
1847 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1849 /* Send DestroyCQ request to CQP */
1850 cqp_request = nes_get_cqp_request(nesdev);
1851 if (cqp_request == NULL) {
1852 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1855 cqp_request->waiting = 1;
1856 cqp_wqe = &cqp_request->cqp_wqe;
1857 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1858 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1859 if (nescq->virtual_cq == 1) {
1860 nesadapter->free_256pbl++;
1861 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1862 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1863 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1865 } else if (nescq->virtual_cq == 2) {
1866 nesadapter->free_4kpbl++;
1867 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1868 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1869 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1871 opcode |= NES_CQP_CQ_4KB_CHUNK;
1874 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1876 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1877 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1878 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1879 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1881 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1883 atomic_set(&cqp_request->refcount, 2);
1884 nes_post_cqp_request(nesdev, cqp_request);
1887 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1888 nescq->hw_cq.cq_number);
1889 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1891 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1892 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1893 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1894 cqp_request->minor_code);
1896 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1897 nescq->hw_cq.cq_number);
1899 } else if (cqp_request->major_code) {
1900 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1901 nescq->hw_cq.cq_number);
1906 nes_put_cqp_request(nesdev, cqp_request);
1908 if (nescq->cq_mem_size)
1909 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1910 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1919 static u32 root_256(struct nes_device *nesdev,
1920 struct nes_root_vpbl *root_vpbl,
1921 struct nes_root_vpbl *new_root,
1927 if (pbl_count_4k == 1) {
1928 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1929 512, &new_root->pbl_pbase);
1931 if (new_root->pbl_vbase == NULL)
1934 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1935 for (i = 0; i < 16; i++) {
1936 new_root->pbl_vbase[i].pa_low =
1937 cpu_to_le32((u32)leaf_pbl);
1938 new_root->pbl_vbase[i].pa_high =
1939 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1943 for (i = 3; i >= 0; i--) {
1945 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1946 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1947 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1949 for (k = 1; k < 16; k++) {
1951 root_vpbl->pbl_vbase[j + k].pa_low =
1952 cpu_to_le32((u32)leaf_pbl);
1953 root_vpbl->pbl_vbase[j + k].pa_high =
1954 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1966 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1967 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1968 dma_addr_t single_buffer, u16 pbl_count_4k,
1969 u16 residual_page_count_4k, int acc, u64 *iova_start,
1970 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1972 struct nes_hw_cqp_wqe *cqp_wqe;
1973 struct nes_cqp_request *cqp_request;
1974 unsigned long flags;
1976 struct nes_adapter *nesadapter = nesdev->nesadapter;
1978 u16 pbl_count_256 = 0;
1980 u8 use_256_pbls = 0;
1982 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1983 struct nes_root_vpbl new_root = {0, 0, 0};
1987 /* Register the region with the adapter */
1988 cqp_request = nes_get_cqp_request(nesdev);
1989 if (cqp_request == NULL) {
1990 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1993 cqp_request->waiting = 1;
1994 cqp_wqe = &cqp_request->cqp_wqe;
1997 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1999 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
2000 pbl_count_256 = (pg_cnt + 31) / 32;
2002 if (pbl_count_256 <= nesadapter->free_256pbl)
2004 else if (pbl_count_4k <= nesadapter->free_4kpbl)
2006 } else if (pg_cnt <= 2048) {
2007 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
2008 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
2010 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
2013 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2017 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
2022 pbl_count = pbl_count_256;
2023 nesadapter->free_256pbl -= pbl_count + use_two_level;
2024 } else if (use_4k_pbls) {
2025 pbl_count = pbl_count_4k;
2026 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2028 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2029 nes_debug(NES_DBG_MR, "Out of Pbls\n");
2030 nes_free_cqp_request(nesdev, cqp_request);
2034 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2037 if (use_256_pbls && use_two_level) {
2038 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
2039 if (new_root.pbl_pbase != 0)
2040 root_vpbl = &new_root;
2042 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2043 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2046 if (pbl_count_4k == 1)
2048 pbl_count = pbl_count_4k;
2050 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2051 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2054 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2056 if (use_4k_pbls == 0)
2061 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2062 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2063 if (acc & IB_ACCESS_LOCAL_WRITE)
2064 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2065 if (acc & IB_ACCESS_REMOTE_WRITE)
2066 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2067 if (acc & IB_ACCESS_REMOTE_READ)
2068 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2069 if (acc & IB_ACCESS_MW_BIND)
2070 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2072 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2073 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2074 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2075 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2077 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2078 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2079 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2080 cpu_to_le32(nespd->pd_id & 0x00007fff);
2081 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2083 if (pbl_count == 0) {
2084 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2086 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2087 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2088 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2091 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2095 atomic_set(&cqp_request->refcount, 2);
2096 nes_post_cqp_request(nesdev, cqp_request);
2099 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2101 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2102 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2103 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2104 major_code = cqp_request->major_code;
2105 nes_put_cqp_request(nesdev, cqp_request);
2107 if ((!ret || major_code) && pbl_count != 0) {
2108 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2110 nesadapter->free_256pbl += pbl_count + use_two_level;
2111 else if (use_4k_pbls)
2112 nesadapter->free_4kpbl += pbl_count + use_two_level;
2113 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2115 if (new_root.pbl_pbase)
2116 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2117 new_root.pbl_pbase);
2121 else if (major_code)
2124 *actual_pbl_cnt = pbl_count + use_two_level;
2125 *used_4k_pbls = use_4k_pbls;
2133 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2134 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2138 struct nes_pd *nespd = to_nespd(ib_pd);
2139 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2140 struct nes_device *nesdev = nesvnic->nesdev;
2141 struct nes_adapter *nesadapter = nesdev->nesadapter;
2142 struct nes_mr *nesmr;
2144 struct nes_vpbl vpbl;
2145 struct nes_root_vpbl root_vpbl;
2150 u32 next_stag_index = 0;
2152 u32 root_pbl_index = 0;
2153 u32 cur_pbl_index = 0;
2154 int err = 0, pbl_depth = 0;
2162 vpbl.pbl_vbase = NULL;
2163 root_vpbl.pbl_vbase = NULL;
2164 root_vpbl.pbl_pbase = 0;
2166 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2167 stag_key = (u8)next_stag_index;
2171 next_stag_index >>= 8;
2172 next_stag_index %= nesadapter->max_mr;
2173 if (num_phys_buf > (1024*512)) {
2174 return ERR_PTR(-E2BIG);
2177 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2178 return ERR_PTR(-EINVAL);
2180 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2181 &stag_index, &next_stag_index);
2183 return ERR_PTR(err);
2186 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2188 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2189 return ERR_PTR(-ENOMEM);
2192 for (i = 0; i < num_phys_buf; i++) {
2194 if ((i & 0x01FF) == 0) {
2195 if (root_pbl_index == 1) {
2196 /* Allocate the root PBL */
2197 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2198 &root_vpbl.pbl_pbase);
2199 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2200 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2201 if (!root_vpbl.pbl_vbase) {
2202 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2204 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2206 return ERR_PTR(-ENOMEM);
2208 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2209 if (!root_vpbl.leaf_vpbl) {
2210 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2211 root_vpbl.pbl_pbase);
2212 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2214 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2216 return ERR_PTR(-ENOMEM);
2218 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2219 root_vpbl.pbl_vbase[0].pa_high =
2220 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2221 root_vpbl.leaf_vpbl[0] = vpbl;
2223 /* Allocate a 4K buffer for the PBL */
2224 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2226 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2227 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2228 if (!vpbl.pbl_vbase) {
2229 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2230 ibmr = ERR_PTR(-ENOMEM);
2234 /* Fill in the root table */
2235 if (1 <= root_pbl_index) {
2236 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2237 cpu_to_le32((u32)vpbl.pbl_pbase);
2238 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2239 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2240 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2246 mask = !buffer_list[i].size;
2248 mask |= buffer_list[i].addr;
2249 if (i != num_phys_buf - 1)
2250 mask |= buffer_list[i].addr + buffer_list[i].size;
2252 if (mask & ~PAGE_MASK) {
2253 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2254 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2255 ibmr = ERR_PTR(-EINVAL);
2260 region_length += buffer_list[i].size;
2261 if ((i != 0) && (single_page)) {
2262 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2265 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2266 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2267 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2270 stag = stag_index << 8;
2272 stag += (u32)stag_key;
2274 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2275 " length = 0x%016lX, index = 0x%08X\n",
2276 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2278 /* Make the leaf PBL the root if only one PBL */
2279 if (root_pbl_index == 1) {
2280 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2286 pbl_count = root_pbl_index;
2288 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2289 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2290 &nesmr->pbls_used, &nesmr->pbl_4k);
2293 nesmr->ibmr.rkey = stag;
2294 nesmr->ibmr.lkey = stag;
2295 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2296 ibmr = &nesmr->ibmr;
2299 ibmr = ERR_PTR(-ENOMEM);
2303 /* free the resources */
2304 if (root_pbl_index == 1) {
2305 /* single PBL case */
2306 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2308 for (i=0; i<root_pbl_index; i++) {
2309 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2310 root_vpbl.leaf_vpbl[i].pbl_pbase);
2312 kfree(root_vpbl.leaf_vpbl);
2313 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2314 root_vpbl.pbl_pbase);
2324 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2326 struct ib_phys_buf bl;
2329 nes_debug(NES_DBG_MR, "\n");
2331 bl.size = (u64)0xffffffffffULL;
2333 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2340 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2341 u64 virt, int acc, struct ib_udata *udata)
2346 dma_addr_t last_dma_addr = 0;
2347 dma_addr_t first_dma_addr = 0;
2348 struct nes_pd *nespd = to_nespd(pd);
2349 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2350 struct nes_device *nesdev = nesvnic->nesdev;
2351 struct nes_adapter *nesadapter = nesdev->nesadapter;
2352 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2353 struct ib_umem_chunk *chunk;
2354 struct nes_ucontext *nes_ucontext;
2355 struct nes_pbl *nespbl;
2356 struct nes_mr *nesmr;
2357 struct ib_umem *region;
2358 struct nes_mem_reg_req req;
2359 struct nes_vpbl vpbl;
2360 struct nes_root_vpbl root_vpbl;
2361 int nmap_index, page_index;
2363 int err, pbl_depth = 0;
2368 u32 next_stag_index;
2370 u32 root_pbl_index = 0;
2371 u32 cur_pbl_index = 0;
2377 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2378 if (IS_ERR(region)) {
2379 return (struct ib_mr *)region;
2382 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2383 " offset = %u, page size = %u.\n",
2384 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2385 region->offset, region->page_size);
2387 skip_pages = ((u32)region->offset) >> 12;
2389 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2390 return ERR_PTR(-EFAULT);
2391 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2393 switch (req.reg_type) {
2394 case IWNES_MEMREG_TYPE_MEM:
2397 vpbl.pbl_vbase = NULL;
2398 root_vpbl.pbl_vbase = NULL;
2399 root_vpbl.pbl_pbase = 0;
2401 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2402 stag_key = (u8)next_stag_index;
2404 driver_key = next_stag_index & 0x70000000;
2406 next_stag_index >>= 8;
2407 next_stag_index %= nesadapter->max_mr;
2409 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2410 nesadapter->max_mr, &stag_index, &next_stag_index);
2412 ib_umem_release(region);
2413 return ERR_PTR(err);
2416 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2418 ib_umem_release(region);
2419 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2420 return ERR_PTR(-ENOMEM);
2422 nesmr->region = region;
2424 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2425 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2426 chunk->nents, chunk->nmap);
2427 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2428 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2429 ib_umem_release(region);
2430 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2431 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2432 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2433 ibmr = ERR_PTR(-EINVAL);
2435 goto reg_user_mr_err;
2438 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2439 ib_umem_release(region);
2440 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2442 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2443 ibmr = ERR_PTR(-EINVAL);
2445 goto reg_user_mr_err;
2448 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2449 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2450 region_length -= skip_pages << 12;
2451 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2453 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2455 if ((page_count&0x01FF) == 0) {
2456 if (page_count >= 1024 * 512) {
2457 ib_umem_release(region);
2458 nes_free_resource(nesadapter,
2459 nesadapter->allocated_mrs, stag_index);
2461 ibmr = ERR_PTR(-E2BIG);
2462 goto reg_user_mr_err;
2464 if (root_pbl_index == 1) {
2465 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2466 8192, &root_vpbl.pbl_pbase);
2467 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2468 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2469 if (!root_vpbl.pbl_vbase) {
2470 ib_umem_release(region);
2471 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2473 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2476 ibmr = ERR_PTR(-ENOMEM);
2477 goto reg_user_mr_err;
2479 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2481 if (!root_vpbl.leaf_vpbl) {
2482 ib_umem_release(region);
2483 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2484 root_vpbl.pbl_pbase);
2485 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2487 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2490 ibmr = ERR_PTR(-ENOMEM);
2491 goto reg_user_mr_err;
2493 root_vpbl.pbl_vbase[0].pa_low =
2494 cpu_to_le32((u32)vpbl.pbl_pbase);
2495 root_vpbl.pbl_vbase[0].pa_high =
2496 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2497 root_vpbl.leaf_vpbl[0] = vpbl;
2499 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2501 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2502 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2503 if (!vpbl.pbl_vbase) {
2504 ib_umem_release(region);
2505 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2506 ibmr = ERR_PTR(-ENOMEM);
2508 goto reg_user_mr_err;
2510 if (1 <= root_pbl_index) {
2511 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2512 cpu_to_le32((u32)vpbl.pbl_pbase);
2513 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2514 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2515 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2521 if (page_count != 0) {
2522 if ((last_dma_addr+4096) !=
2523 (sg_dma_address(&chunk->page_list[nmap_index])+
2526 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2529 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2531 last_dma_addr = first_dma_addr;
2535 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2536 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2537 (page_index*4096)));
2538 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2539 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2540 (page_index*4096))) >> 32)));
2547 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2548 " stag_key=0x%08x\n",
2549 stag_index, driver_key, stag_key);
2550 stag = stag_index << 8;
2552 stag += (u32)stag_key;
2558 /* Make the leaf PBL the root if only one PBL */
2559 if (root_pbl_index == 1) {
2560 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2566 pbl_count = root_pbl_index;
2569 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2570 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2571 stag, (unsigned int)iova_start,
2572 (unsigned int)region_length, stag_index,
2573 (unsigned long long)region->length, pbl_count);
2574 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2575 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2576 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2578 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2581 nesmr->ibmr.rkey = stag;
2582 nesmr->ibmr.lkey = stag;
2583 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2584 ibmr = &nesmr->ibmr;
2586 ib_umem_release(region);
2588 ibmr = ERR_PTR(-ENOMEM);
2592 /* free the resources */
2593 if (root_pbl_index == 1) {
2594 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2597 for (page_index=0; page_index<root_pbl_index; page_index++) {
2598 pci_free_consistent(nesdev->pcidev, 4096,
2599 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2600 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2602 kfree(root_vpbl.leaf_vpbl);
2603 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2604 root_vpbl.pbl_pbase);
2607 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2610 case IWNES_MEMREG_TYPE_QP:
2611 case IWNES_MEMREG_TYPE_CQ:
2612 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2614 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2615 ib_umem_release(region);
2616 return ERR_PTR(-ENOMEM);
2618 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2620 ib_umem_release(region);
2622 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2623 return ERR_PTR(-ENOMEM);
2625 nesmr->region = region;
2626 nes_ucontext = to_nesucontext(pd->uobject->context);
2627 pbl_depth = region->length >> 12;
2628 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2629 nespbl->pbl_size = pbl_depth*sizeof(u64);
2630 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2631 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2633 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2636 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2637 nespbl->pbl_size, pbl_depth);
2638 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2639 &nespbl->pbl_pbase);
2641 ib_umem_release(region);
2644 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2645 return ERR_PTR(-ENOMEM);
2648 nespbl->pbl_vbase = (u64 *)pbl;
2649 nespbl->user_base = start;
2650 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2651 " pbl_vbase=%p user_base=0x%lx\n",
2652 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2653 (void *) nespbl->pbl_vbase, nespbl->user_base);
2655 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2656 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2657 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2658 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2659 nespbl->page = sg_page(&chunk->page_list[0]);
2660 for (page_index=0; page_index<chunk_pages; page_index++) {
2661 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2662 (sg_dma_address(&chunk->page_list[nmap_index])+
2663 (page_index*4096)));
2664 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2665 (sg_dma_address(&chunk->page_list[nmap_index])+
2666 (page_index*4096)))>>32);
2667 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2668 (unsigned long long)*pbl,
2669 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2674 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2675 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2677 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2679 nesmr->ibmr.rkey = -1;
2680 nesmr->ibmr.lkey = -1;
2681 nesmr->mode = req.reg_type;
2682 return &nesmr->ibmr;
2685 return ERR_PTR(-ENOSYS);
2692 static int nes_dereg_mr(struct ib_mr *ib_mr)
2694 struct nes_mr *nesmr = to_nesmr(ib_mr);
2695 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2696 struct nes_device *nesdev = nesvnic->nesdev;
2697 struct nes_adapter *nesadapter = nesdev->nesadapter;
2698 struct nes_hw_cqp_wqe *cqp_wqe;
2699 struct nes_cqp_request *cqp_request;
2700 unsigned long flags;
2705 if (nesmr->region) {
2706 ib_umem_release(nesmr->region);
2708 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2713 /* Deallocate the region with the adapter */
2715 cqp_request = nes_get_cqp_request(nesdev);
2716 if (cqp_request == NULL) {
2717 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2720 cqp_request->waiting = 1;
2721 cqp_wqe = &cqp_request->cqp_wqe;
2723 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2724 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2725 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2726 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2727 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2729 atomic_set(&cqp_request->refcount, 2);
2730 nes_post_cqp_request(nesdev, cqp_request);
2733 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2734 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2736 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2737 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2738 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2740 major_code = cqp_request->major_code;
2741 minor_code = cqp_request->minor_code;
2743 nes_put_cqp_request(nesdev, cqp_request);
2746 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2747 " ib_mr=%p, rkey = 0x%08X\n",
2748 ib_mr, ib_mr->rkey);
2750 } else if (major_code) {
2751 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2752 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2753 major_code, minor_code, ib_mr, ib_mr->rkey);
2757 if (nesmr->pbls_used != 0) {
2758 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2759 if (nesmr->pbl_4k) {
2760 nesadapter->free_4kpbl += nesmr->pbls_used;
2761 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2762 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2763 "exceeded the max(%u)\n",
2764 nesadapter->free_4kpbl,
2765 nesadapter->max_4kpbl);
2767 nesadapter->free_256pbl += nesmr->pbls_used;
2768 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2769 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2770 "exceeded the max(%u)\n",
2771 nesadapter->free_256pbl,
2772 nesadapter->max_256pbl);
2774 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2776 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2777 (ib_mr->rkey & 0x0fffff00) >> 8);
2788 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2791 struct nes_ib_device *nesibdev =
2792 container_of(dev, struct nes_ib_device, ibdev.dev);
2793 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2795 nes_debug(NES_DBG_INIT, "\n");
2796 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2803 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2806 struct nes_ib_device *nesibdev =
2807 container_of(dev, struct nes_ib_device, ibdev.dev);
2808 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2810 nes_debug(NES_DBG_INIT, "\n");
2811 return sprintf(buf, "%u.%u\n",
2812 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2813 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2820 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2823 nes_debug(NES_DBG_INIT, "\n");
2824 return sprintf(buf, "NES020\n");
2831 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2834 nes_debug(NES_DBG_INIT, "\n");
2835 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2839 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2840 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2841 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2842 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2844 static struct device_attribute *nes_dev_attributes[] = {
2855 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2856 int attr_mask, struct ib_qp_init_attr *init_attr)
2858 struct nes_qp *nesqp = to_nesqp(ibqp);
2860 nes_debug(NES_DBG_QP, "\n");
2862 attr->qp_access_flags = 0;
2863 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2864 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2865 attr->cap.max_recv_sge = 1;
2866 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
2867 init_attr->cap.max_inline_data = 0;
2869 init_attr->cap.max_inline_data = 64;
2872 init_attr->event_handler = nesqp->ibqp.event_handler;
2873 init_attr->qp_context = nesqp->ibqp.qp_context;
2874 init_attr->send_cq = nesqp->ibqp.send_cq;
2875 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2876 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2877 init_attr->cap = attr->cap;
2886 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2887 u32 next_iwarp_state, u32 wait_completion)
2889 struct nes_hw_cqp_wqe *cqp_wqe;
2890 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2891 /* struct iw_cm_event cm_event; */
2892 struct nes_cqp_request *cqp_request;
2896 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2897 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2899 cqp_request = nes_get_cqp_request(nesdev);
2900 if (cqp_request == NULL) {
2901 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2904 if (wait_completion) {
2905 cqp_request->waiting = 1;
2907 cqp_request->waiting = 0;
2909 cqp_wqe = &cqp_request->cqp_wqe;
2911 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2912 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2913 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2914 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2915 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2916 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2917 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2919 atomic_set(&cqp_request->refcount, 2);
2920 nes_post_cqp_request(nesdev, cqp_request);
2923 if (wait_completion) {
2924 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2925 nesqp->hwqp.qp_id); */
2926 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2928 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2929 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2930 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2931 major_code = cqp_request->major_code;
2933 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2934 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2935 nesqp->hwqp.qp_id, cqp_request->major_code,
2936 cqp_request->minor_code, next_iwarp_state);
2939 nes_put_cqp_request(nesdev, cqp_request);
2943 else if (major_code)
2956 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2957 int attr_mask, struct ib_udata *udata)
2959 struct nes_qp *nesqp = to_nesqp(ibqp);
2960 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2961 struct nes_device *nesdev = nesvnic->nesdev;
2964 u32 next_iwarp_state = 0;
2966 unsigned long qplockflags;
2968 u16 original_last_aeq;
2969 u8 issue_modify_qp = 0;
2970 u8 issue_disconnect = 0;
2973 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2974 " iwarp_state=0x%X, refcount=%d\n",
2975 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2976 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2978 spin_lock_irqsave(&nesqp->lock, qplockflags);
2980 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2981 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2982 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2983 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2985 if (attr_mask & IB_QP_STATE) {
2986 switch (attr->qp_state) {
2988 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2990 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2991 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2994 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2995 issue_modify_qp = 1;
2998 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
3000 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
3001 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3004 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
3005 issue_modify_qp = 1;
3008 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
3010 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
3011 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3014 if (nesqp->cm_id == NULL) {
3015 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
3016 nesqp->hwqp.qp_id );
3017 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3020 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
3021 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
3022 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3023 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3024 issue_modify_qp = 1;
3025 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3026 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3027 nesqp->hte_added = 1;
3030 issue_modify_qp = 1;
3031 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3032 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3033 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3034 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3037 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3038 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3039 " ignored due to current iWARP state\n",
3041 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3044 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3045 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3046 " already done based on hw state.\n",
3048 issue_modify_qp = 0;
3049 nesqp->in_disconnect = 0;
3051 switch (nesqp->hw_iwarp_state) {
3052 case NES_AEQE_IWARP_STATE_CLOSING:
3053 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3054 case NES_AEQE_IWARP_STATE_TERMINATE:
3055 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3057 case NES_AEQE_IWARP_STATE_ERROR:
3058 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3061 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3062 nesqp->in_disconnect = 1;
3063 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3069 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3071 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3072 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3075 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3076 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3077 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3078 issue_modify_qp = 1;
3079 nesqp->in_disconnect = 1;
3083 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3084 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3087 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3089 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3090 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3091 if (nesqp->hte_added) {
3092 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3093 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3094 nesqp->hte_added = 0;
3096 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3097 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3098 next_iwarp_state |= NES_CQP_QP_RESET;
3099 nesqp->in_disconnect = 1;
3101 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3102 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3105 issue_modify_qp = 1;
3106 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3109 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3114 nesqp->ibqp_state = attr->qp_state;
3115 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3116 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3117 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3118 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3119 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3120 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3121 nesqp->iwarp_state);
3122 issue_disconnect = 1;
3124 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3125 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3126 nesqp->iwarp_state);
3130 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3131 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3132 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3133 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3134 issue_modify_qp = 1;
3136 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3137 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3138 issue_modify_qp = 1;
3140 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3141 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3142 issue_modify_qp = 1;
3144 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3145 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3146 issue_modify_qp = 1;
3149 if (nesqp->user_mode) {
3150 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3151 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3152 issue_modify_qp = 1;
3156 original_last_aeq = nesqp->last_aeq;
3157 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3159 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3164 if (issue_modify_qp) {
3165 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3166 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 1);
3168 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3169 " failed for QP%u.\n",
3170 next_iwarp_state, nesqp->hwqp.qp_id);
3174 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3175 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3176 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3177 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3178 original_last_aeq, nesqp->last_aeq);
3180 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3183 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3184 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3185 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3186 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3187 original_last_aeq, nesqp->last_aeq);
3188 /* this one is for the cm_disconnect thread */
3189 spin_lock_irqsave(&nesqp->lock, qplockflags);
3190 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3191 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3192 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3193 nes_cm_disconn(nesqp);
3195 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3196 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3199 spin_lock_irqsave(&nesqp->lock, qplockflags);
3201 /* These two are for the timer thread */
3202 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3203 nesqp->cm_id->add_ref(nesqp->cm_id);
3204 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3205 " need ae to finish up, original_last_aeq = 0x%04X."
3206 " last_aeq = 0x%04X, scheduling timer.\n",
3207 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3208 original_last_aeq, nesqp->last_aeq);
3209 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3211 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3213 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3214 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3215 " need ae to finish up, original_last_aeq = 0x%04X."
3216 " last_aeq = 0x%04X.\n",
3217 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3218 original_last_aeq, nesqp->last_aeq);
3222 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3223 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3224 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3225 original_last_aeq, nesqp->last_aeq);
3228 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3229 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3230 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3231 original_last_aeq, nesqp->last_aeq);
3236 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3237 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3244 * nes_muticast_attach
3246 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3248 nes_debug(NES_DBG_INIT, "\n");
3254 * nes_multicast_detach
3256 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3258 nes_debug(NES_DBG_INIT, "\n");
3266 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3267 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3268 struct ib_mad *in_mad, struct ib_mad *out_mad)
3270 nes_debug(NES_DBG_INIT, "\n");
3275 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3278 int total_payload_length = 0;
3279 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3280 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3281 ib_wr->sg_list[sge_index].addr);
3282 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3283 ib_wr->sg_list[sge_index].length);
3285 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3286 (ib_wr->sg_list[sge_index].lkey));
3288 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3290 total_payload_length += ib_wr->sg_list[sge_index].length;
3292 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3293 total_payload_length);
3294 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3295 total_payload_length);
3301 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3302 struct ib_send_wr **bad_wr)
3305 unsigned long flags = 0;
3306 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3307 struct nes_device *nesdev = nesvnic->nesdev;
3308 struct nes_qp *nesqp = to_nesqp(ibqp);
3309 struct nes_hw_qp_wqe *wqe;
3311 u32 qsize = nesqp->hwqp.sq_size;
3316 u32 total_payload_length;
3321 total_payload_length = 0;
3323 if (nesqp->ibqp_state > IB_QPS_RTS)
3326 spin_lock_irqsave(&nesqp->lock, flags);
3328 head = nesqp->hwqp.sq_head;
3331 /* Check for SQ overflow */
3332 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3337 wqe = &nesqp->hwqp.sq_vbase[head];
3338 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3339 nesqp->hwqp.qp_id, wqe, head); */
3340 nes_fill_init_qp_wqe(wqe, nesqp, head);
3341 u64temp = (u64)(ib_wr->wr_id);
3342 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3344 switch (ib_wr->opcode) {
3346 if (ib_wr->send_flags & IB_SEND_SOLICITED) {
3347 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3349 wqe_misc = NES_IWARP_SQ_OP_SEND;
3351 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3355 if (ib_wr->send_flags & IB_SEND_FENCE) {
3356 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3358 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3359 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3360 (ib_wr->sg_list[0].length <= 64)) {
3361 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3362 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3363 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3364 ib_wr->sg_list[0].length);
3365 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3367 fill_wqe_sg_send(wqe, ib_wr, 1);
3371 case IB_WR_RDMA_WRITE:
3372 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3373 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3374 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3376 nesdev->nesadapter->max_sge);
3380 if (ib_wr->send_flags & IB_SEND_FENCE) {
3381 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3384 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3385 ib_wr->wr.rdma.rkey);
3386 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3387 ib_wr->wr.rdma.remote_addr);
3389 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3390 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3391 (ib_wr->sg_list[0].length <= 64)) {
3392 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3393 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3394 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3395 ib_wr->sg_list[0].length);
3396 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3398 fill_wqe_sg_send(wqe, ib_wr, 1);
3400 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3401 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3403 case IB_WR_RDMA_READ:
3404 /* iWARP only supports 1 sge for RDMA reads */
3405 if (ib_wr->num_sge > 1) {
3406 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3411 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3412 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3413 ib_wr->wr.rdma.remote_addr);
3414 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3415 ib_wr->wr.rdma.rkey);
3416 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3417 ib_wr->sg_list->length);
3418 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3419 ib_wr->sg_list->addr);
3420 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3421 ib_wr->sg_list->lkey);
3429 if (ib_wr->send_flags & IB_SEND_SIGNALED) {
3430 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3432 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3434 ib_wr = ib_wr->next;
3442 nesqp->hwqp.sq_head = head;
3445 counter = min(wqe_count, ((u32)255));
3446 wqe_count -= counter;
3447 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3448 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3451 spin_unlock_irqrestore(&nesqp->lock, flags);
3462 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3463 struct ib_recv_wr **bad_wr)
3466 unsigned long flags = 0;
3467 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3468 struct nes_device *nesdev = nesvnic->nesdev;
3469 struct nes_qp *nesqp = to_nesqp(ibqp);
3470 struct nes_hw_qp_wqe *wqe;
3473 u32 qsize = nesqp->hwqp.rq_size;
3477 u32 total_payload_length;
3479 if (nesqp->ibqp_state > IB_QPS_RTS)
3482 spin_lock_irqsave(&nesqp->lock, flags);
3484 head = nesqp->hwqp.rq_head;
3487 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3491 /* Check for RQ overflow */
3492 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3497 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3498 wqe = &nesqp->hwqp.rq_vbase[head];
3500 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3501 nesqp->hwqp.qp_id, wqe, head); */
3502 nes_fill_init_qp_wqe(wqe, nesqp, head);
3503 u64temp = (u64)(ib_wr->wr_id);
3504 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3506 total_payload_length = 0;
3507 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3508 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3509 ib_wr->sg_list[sge_index].addr);
3510 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3511 ib_wr->sg_list[sge_index].length);
3512 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3513 ib_wr->sg_list[sge_index].lkey);
3515 total_payload_length += ib_wr->sg_list[sge_index].length;
3517 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3518 total_payload_length);
3520 ib_wr = ib_wr->next;
3527 nesqp->hwqp.rq_head = head;
3530 counter = min(wqe_count, ((u32)255));
3531 wqe_count -= counter;
3532 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3535 spin_unlock_irqrestore(&nesqp->lock, flags);
3546 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3551 unsigned long flags = 0;
3552 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3553 struct nes_device *nesdev = nesvnic->nesdev;
3554 struct nes_cq *nescq = to_nescq(ibcq);
3555 struct nes_qp *nesqp;
3556 struct nes_hw_cqe cqe;
3565 nes_debug(NES_DBG_CQ, "\n");
3567 spin_lock_irqsave(&nescq->lock, flags);
3569 head = nescq->hw_cq.cq_head;
3570 cq_size = nescq->hw_cq.cq_size;
3572 while (cqe_count < num_entries) {
3573 if (le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3576 * Make sure we read CQ entry contents *after*
3577 * we've checked the valid bit.
3581 cqe = nescq->hw_cq.cq_vbase[head];
3582 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3583 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3584 wqe_index = u32temp &
3585 (nesdev->nesadapter->max_qp_wr - 1);
3586 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3587 /* parse CQE, get completion context from WQE (either rq or sq */
3588 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3590 nesqp = *((struct nes_qp **)&u64temp);
3591 memset(entry, 0, sizeof *entry);
3592 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3593 entry->status = IB_WC_SUCCESS;
3595 entry->status = IB_WC_WR_FLUSH_ERR;
3598 entry->qp = &nesqp->ibqp;
3599 entry->src_qp = nesqp->hwqp.qp_id;
3601 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3602 if (nesqp->skip_lsmm) {
3603 nesqp->skip_lsmm = 0;
3604 wq_tail = nesqp->hwqp.sq_tail++;
3607 /* Working on a SQ Completion*/
3608 wq_tail = wqe_index;
3609 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3610 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3611 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3612 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wq_tail].
3613 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3614 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3615 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3617 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3618 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3619 case NES_IWARP_SQ_OP_RDMAW:
3620 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3621 entry->opcode = IB_WC_RDMA_WRITE;
3623 case NES_IWARP_SQ_OP_RDMAR:
3624 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3625 entry->opcode = IB_WC_RDMA_READ;
3626 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wq_tail].
3627 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3629 case NES_IWARP_SQ_OP_SENDINV:
3630 case NES_IWARP_SQ_OP_SENDSEINV:
3631 case NES_IWARP_SQ_OP_SEND:
3632 case NES_IWARP_SQ_OP_SENDSE:
3633 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3634 entry->opcode = IB_WC_SEND;
3638 /* Working on a RQ Completion*/
3639 wq_tail = wqe_index;
3640 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3641 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3642 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3643 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wq_tail].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3644 entry->opcode = IB_WC_RECV;
3646 entry->wr_id = wrid;
3648 if (++head >= cq_size)
3651 nescq->polled_completions++;
3652 if ((nescq->polled_completions > (cq_size / 2)) ||
3653 (nescq->polled_completions == 255)) {
3654 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3655 " are pending %u of %u.\n",
3656 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3657 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3658 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3659 nescq->polled_completions = 0;
3666 if (nescq->polled_completions) {
3667 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3668 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3669 nescq->polled_completions = 0;
3672 nescq->hw_cq.cq_head = head;
3673 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3674 cqe_count, nescq->hw_cq.cq_number);
3676 spin_unlock_irqrestore(&nescq->lock, flags);
3685 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3687 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3688 struct nes_device *nesdev = nesvnic->nesdev;
3689 struct nes_cq *nescq = to_nescq(ibcq);
3692 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3693 nescq->hw_cq.cq_number);
3695 cq_arm = nescq->hw_cq.cq_number;
3696 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3697 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3698 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3699 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3703 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3704 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3711 * nes_init_ofa_device
3713 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3715 struct nes_ib_device *nesibdev;
3716 struct nes_vnic *nesvnic = netdev_priv(netdev);
3717 struct nes_device *nesdev = nesvnic->nesdev;
3719 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3720 if (nesibdev == NULL) {
3723 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3724 nesibdev->ibdev.owner = THIS_MODULE;
3726 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3727 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3728 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3730 nesibdev->ibdev.uverbs_cmd_mask =
3731 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3732 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3733 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3734 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3735 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3736 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3737 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3738 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3739 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3740 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3741 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3742 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3743 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3744 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3745 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3746 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3747 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3748 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3749 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3750 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3751 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3752 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3754 nesibdev->ibdev.phys_port_cnt = 1;
3755 nesibdev->ibdev.num_comp_vectors = 1;
3756 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3757 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3758 nesibdev->ibdev.query_device = nes_query_device;
3759 nesibdev->ibdev.query_port = nes_query_port;
3760 nesibdev->ibdev.modify_port = nes_modify_port;
3761 nesibdev->ibdev.query_pkey = nes_query_pkey;
3762 nesibdev->ibdev.query_gid = nes_query_gid;
3763 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3764 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3765 nesibdev->ibdev.mmap = nes_mmap;
3766 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3767 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3768 nesibdev->ibdev.create_ah = nes_create_ah;
3769 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3770 nesibdev->ibdev.create_qp = nes_create_qp;
3771 nesibdev->ibdev.modify_qp = nes_modify_qp;
3772 nesibdev->ibdev.query_qp = nes_query_qp;
3773 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3774 nesibdev->ibdev.create_cq = nes_create_cq;
3775 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3776 nesibdev->ibdev.poll_cq = nes_poll_cq;
3777 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3778 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3779 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3780 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3781 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3782 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3783 nesibdev->ibdev.bind_mw = nes_bind_mw;
3785 nesibdev->ibdev.alloc_fmr = nes_alloc_fmr;
3786 nesibdev->ibdev.unmap_fmr = nes_unmap_fmr;
3787 nesibdev->ibdev.dealloc_fmr = nes_dealloc_fmr;
3788 nesibdev->ibdev.map_phys_fmr = nes_map_phys_fmr;
3790 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3791 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3792 nesibdev->ibdev.process_mad = nes_process_mad;
3794 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3795 nesibdev->ibdev.post_send = nes_post_send;
3796 nesibdev->ibdev.post_recv = nes_post_recv;
3798 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3799 if (nesibdev->ibdev.iwcm == NULL) {
3800 ib_dealloc_device(&nesibdev->ibdev);
3803 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3804 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3805 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3806 nesibdev->ibdev.iwcm->connect = nes_connect;
3807 nesibdev->ibdev.iwcm->accept = nes_accept;
3808 nesibdev->ibdev.iwcm->reject = nes_reject;
3809 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3810 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3817 * nes_destroy_ofa_device
3819 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3821 if (nesibdev == NULL)
3824 nes_unregister_ofa_device(nesibdev);
3826 kfree(nesibdev->ibdev.iwcm);
3827 ib_dealloc_device(&nesibdev->ibdev);
3832 * nes_register_ofa_device
3834 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3836 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3837 struct nes_device *nesdev = nesvnic->nesdev;
3838 struct nes_adapter *nesadapter = nesdev->nesadapter;
3841 ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3846 /* Get the resources allocated to this device */
3847 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3848 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3849 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3850 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3852 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3853 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3857 device_remove_file(&nesibdev->ibdev.dev,
3858 nes_dev_attributes[i]);
3860 ib_unregister_device(&nesibdev->ibdev);
3865 nesvnic->of_device_registered = 1;
3872 * nes_unregister_ofa_device
3874 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3876 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3879 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3880 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3883 if (nesvnic->of_device_registered) {
3884 ib_unregister_device(&nesibdev->ibdev);
3887 nesvnic->of_device_registered = 0;