2 * Copyright (c) 2006 - 2011 Intel Corporation. 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 <linux/slab.h>
39 #include <asm/byteorder.h>
41 #include <rdma/ib_verbs.h>
42 #include <rdma/iw_cm.h>
43 #include <rdma/ib_user_verbs.h>
47 #include <rdma/ib_umem.h>
49 atomic_t mod_qp_timouts;
51 atomic_t sw_qps_destroyed;
53 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
54 static int nes_dereg_mr(struct ib_mr *ib_mr);
59 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type,
60 struct ib_udata *udata)
62 struct nes_pd *nespd = to_nespd(ibpd);
63 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
64 struct nes_device *nesdev = nesvnic->nesdev;
65 struct nes_adapter *nesadapter = nesdev->nesadapter;
66 struct nes_cqp_request *cqp_request;
69 struct nes_hw_cqp_wqe *cqp_wqe;
73 u32 next_stag_index = 0;
77 if (type != IB_MW_TYPE_1)
78 return ERR_PTR(-EINVAL);
80 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
81 stag_key = (u8)next_stag_index;
85 next_stag_index >>= 8;
86 next_stag_index %= nesadapter->max_mr;
88 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
89 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_MW);
94 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
96 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
97 return ERR_PTR(-ENOMEM);
100 stag = stag_index << 8;
102 stag += (u32)stag_key;
104 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
107 /* Register the region with the adapter */
108 cqp_request = nes_get_cqp_request(nesdev);
109 if (cqp_request == NULL) {
111 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
112 return ERR_PTR(-ENOMEM);
115 cqp_request->waiting = 1;
116 cqp_wqe = &cqp_request->cqp_wqe;
118 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
119 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
120 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
121 NES_CQP_STAG_REM_ACC_EN);
123 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
124 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
125 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
127 atomic_set(&cqp_request->refcount, 2);
128 nes_post_cqp_request(nesdev, cqp_request);
131 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
133 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
134 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
135 stag, ret, cqp_request->major_code, cqp_request->minor_code);
136 if ((!ret) || (cqp_request->major_code)) {
137 nes_put_cqp_request(nesdev, cqp_request);
139 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
141 return ERR_PTR(-ETIME);
143 return ERR_PTR(-ENOMEM);
146 nes_put_cqp_request(nesdev, cqp_request);
148 nesmr->ibmw.rkey = stag;
149 nesmr->mode = IWNES_MEMREG_TYPE_MW;
152 nesmr->pbls_used = 0;
161 static int nes_dealloc_mw(struct ib_mw *ibmw)
163 struct nes_mr *nesmr = to_nesmw(ibmw);
164 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
165 struct nes_device *nesdev = nesvnic->nesdev;
166 struct nes_adapter *nesadapter = nesdev->nesadapter;
167 struct nes_hw_cqp_wqe *cqp_wqe;
168 struct nes_cqp_request *cqp_request;
172 /* Deallocate the window with the adapter */
173 cqp_request = nes_get_cqp_request(nesdev);
174 if (cqp_request == NULL) {
175 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
178 cqp_request->waiting = 1;
179 cqp_wqe = &cqp_request->cqp_wqe;
180 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
181 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
182 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
184 atomic_set(&cqp_request->refcount, 2);
185 nes_post_cqp_request(nesdev, cqp_request);
188 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
190 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
192 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
193 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
194 ret, cqp_request->major_code, cqp_request->minor_code);
197 else if (cqp_request->major_code)
200 nes_put_cqp_request(nesdev, cqp_request);
202 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
203 (ibmw->rkey & 0x0fffff00) >> 8);
213 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
214 u32 stag, u32 page_count)
216 struct nes_hw_cqp_wqe *cqp_wqe;
217 struct nes_cqp_request *cqp_request;
220 struct nes_adapter *nesadapter = nesdev->nesadapter;
223 u64 region_length = page_count * PAGE_SIZE;
226 cqp_request = nes_get_cqp_request(nesdev);
227 if (cqp_request == NULL) {
228 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
231 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
232 "region_length = %llu\n",
233 page_count, region_length);
234 cqp_request->waiting = 1;
235 cqp_wqe = &cqp_request->cqp_wqe;
237 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
238 if (nesadapter->free_4kpbl > 0) {
239 nesadapter->free_4kpbl--;
240 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
242 /* No 4kpbl's available: */
243 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
244 nes_debug(NES_DBG_MR, "Out of Pbls\n");
245 nes_free_cqp_request(nesdev, cqp_request);
249 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
250 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
251 NES_CQP_STAG_REM_ACC_EN;
253 * The current OFED API does not support the zero based TO option.
254 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
255 * the API does not support that ability to have the MR set for local
256 * access only when created and not allow the SQ op to override. Given
257 * this the remote enable must be set here.
260 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
261 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
262 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
264 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
265 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
266 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
267 cpu_to_le32(nespd->pd_id & 0x00007fff);
269 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
270 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
271 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
272 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
273 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
274 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
277 atomic_set(&cqp_request->refcount, 2);
278 nes_post_cqp_request(nesdev, cqp_request);
281 ret = wait_event_timeout(cqp_request->waitq,
282 (0 != cqp_request->request_done),
285 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
286 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
287 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
288 cqp_request->minor_code);
289 major_code = cqp_request->major_code;
290 nes_put_cqp_request(nesdev, cqp_request);
292 if (!ret || major_code) {
293 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
294 nesadapter->free_4kpbl++;
295 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
308 static struct ib_mr *nes_alloc_mr(struct ib_pd *ibpd,
309 enum ib_mr_type mr_type,
312 struct nes_pd *nespd = to_nespd(ibpd);
313 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
314 struct nes_device *nesdev = nesvnic->nesdev;
315 struct nes_adapter *nesadapter = nesdev->nesadapter;
322 struct nes_mr *nesmr;
327 if (mr_type != IB_MR_TYPE_MEM_REG)
328 return ERR_PTR(-EINVAL);
330 if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
331 return ERR_PTR(-E2BIG);
334 * Note: Set to always use a fixed length single page entry PBL. This is to allow
335 * for the fast_reg_mr operation to always know the size of the PBL.
337 if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
338 return ERR_PTR(-E2BIG);
340 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
341 stag_key = (u8)next_stag_index;
342 next_stag_index >>= 8;
343 next_stag_index %= nesadapter->max_mr;
345 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
346 nesadapter->max_mr, &stag_index,
347 &next_stag_index, NES_RESOURCE_FAST_MR);
351 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
353 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
354 return ERR_PTR(-ENOMEM);
357 stag = stag_index << 8;
359 stag += (u32)stag_key;
361 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
364 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_num_sg);
367 nesmr->ibmr.rkey = stag;
368 nesmr->ibmr.lkey = stag;
369 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
373 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
374 return ERR_PTR(-ENOMEM);
377 nesmr->pages = pci_alloc_consistent(nesdev->pcidev,
378 max_num_sg * sizeof(u64),
383 nesmr->max_pages = max_num_sg;
390 return ERR_PTR(-ENOMEM);
393 static int nes_set_page(struct ib_mr *ibmr, u64 addr)
395 struct nes_mr *nesmr = to_nesmr(ibmr);
397 if (unlikely(nesmr->npages == nesmr->max_pages))
400 nesmr->pages[nesmr->npages++] = cpu_to_le64(addr);
405 static int nes_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
406 int sg_nents, unsigned int *sg_offset)
408 struct nes_mr *nesmr = to_nesmr(ibmr);
412 return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, nes_set_page);
418 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
419 struct ib_udata *uhw)
421 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
422 struct nes_device *nesdev = nesvnic->nesdev;
423 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
425 if (uhw->inlen || uhw->outlen)
428 memset(props, 0, sizeof(*props));
429 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
431 props->fw_ver = nesdev->nesadapter->firmware_version;
432 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
433 props->vendor_id = nesdev->nesadapter->vendor_id;
434 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
435 props->hw_ver = nesdev->nesadapter->hw_rev;
436 props->max_mr_size = 0x80000000;
437 props->max_qp = nesibdev->max_qp;
438 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
439 props->max_sge = nesdev->nesadapter->max_sge;
440 props->max_cq = nesibdev->max_cq;
441 props->max_cqe = nesdev->nesadapter->max_cqe;
442 props->max_mr = nesibdev->max_mr;
443 props->max_mw = nesibdev->max_mr;
444 props->max_pd = nesibdev->max_pd;
445 props->max_sge_rd = 1;
446 switch (nesdev->nesadapter->max_irrq_wr) {
448 props->max_qp_rd_atom = 2;
451 props->max_qp_rd_atom = 8;
454 props->max_qp_rd_atom = 32;
457 props->max_qp_rd_atom = 64;
460 props->max_qp_rd_atom = 0;
462 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
463 props->atomic_cap = IB_ATOMIC_NONE;
464 props->max_map_per_fmr = 1;
473 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
475 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
476 struct net_device *netdev = nesvnic->netdev;
478 memset(props, 0, sizeof(*props));
480 props->max_mtu = IB_MTU_4096;
482 if (netdev->mtu >= 4096)
483 props->active_mtu = IB_MTU_4096;
484 else if (netdev->mtu >= 2048)
485 props->active_mtu = IB_MTU_2048;
486 else if (netdev->mtu >= 1024)
487 props->active_mtu = IB_MTU_1024;
488 else if (netdev->mtu >= 512)
489 props->active_mtu = IB_MTU_512;
491 props->active_mtu = IB_MTU_256;
497 if (netif_queue_stopped(netdev))
498 props->state = IB_PORT_DOWN;
499 else if (nesvnic->linkup)
500 props->state = IB_PORT_ACTIVE;
502 props->state = IB_PORT_DOWN;
503 props->phys_state = 0;
504 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
505 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
506 props->gid_tbl_len = 1;
507 props->pkey_tbl_len = 1;
508 props->qkey_viol_cntr = 0;
509 props->active_width = IB_WIDTH_4X;
510 props->active_speed = IB_SPEED_SDR;
511 props->max_msg_sz = 0x80000000;
519 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
529 static int nes_query_gid(struct ib_device *ibdev, u8 port,
530 int index, union ib_gid *gid)
532 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
534 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
535 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
542 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
543 * of all objects associated with a particular user-mode client.
545 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
546 struct ib_udata *udata)
548 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
549 struct nes_device *nesdev = nesvnic->nesdev;
550 struct nes_adapter *nesadapter = nesdev->nesadapter;
551 struct nes_alloc_ucontext_req req;
552 struct nes_alloc_ucontext_resp uresp;
553 struct nes_ucontext *nes_ucontext;
554 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
557 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
558 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
559 return ERR_PTR(-EINVAL);
562 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
563 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
564 req.userspace_ver, NES_ABI_USERSPACE_VER);
565 return ERR_PTR(-EINVAL);
569 memset(&uresp, 0, sizeof uresp);
571 uresp.max_qps = nesibdev->max_qp;
572 uresp.max_pds = nesibdev->max_pd;
573 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
574 uresp.virtwq = nesadapter->virtwq;
575 uresp.kernel_ver = NES_ABI_KERNEL_VER;
577 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
579 return ERR_PTR(-ENOMEM);
581 nes_ucontext->nesdev = nesdev;
582 nes_ucontext->mmap_wq_offset = uresp.max_pds;
583 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
584 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
588 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
590 return ERR_PTR(-EFAULT);
593 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
594 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
595 atomic_set(&nes_ucontext->usecnt, 1);
596 return &nes_ucontext->ibucontext;
601 * nes_dealloc_ucontext
603 static int nes_dealloc_ucontext(struct ib_ucontext *context)
605 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
606 /* struct nes_device *nesdev = nesvnic->nesdev; */
607 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
609 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
619 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
622 struct nes_vnic *nesvnic = to_nesvnic(context->device);
623 struct nes_device *nesdev = nesvnic->nesdev;
624 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
625 struct nes_ucontext *nes_ucontext;
626 struct nes_qp *nesqp;
628 nes_ucontext = to_nesucontext(context);
631 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
632 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
633 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
634 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
635 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
636 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
639 nesqp = nes_ucontext->mmap_nesqp[index];
641 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
644 if (remap_pfn_range(vma, vma->vm_start,
645 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
646 vma->vm_end - vma->vm_start,
647 vma->vm_page_prot)) {
648 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
651 vma->vm_private_data = nesqp;
654 index = vma->vm_pgoff;
655 if (!test_bit(index, nes_ucontext->allocated_doorbells))
658 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
659 if (io_remap_pfn_range(vma, vma->vm_start,
660 (nesdev->doorbell_start +
661 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
662 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
664 vma->vm_private_data = nes_ucontext;
675 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
676 struct ib_ucontext *context, struct ib_udata *udata)
678 struct nes_pd *nespd;
679 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
680 struct nes_device *nesdev = nesvnic->nesdev;
681 struct nes_adapter *nesadapter = nesdev->nesadapter;
682 struct nes_ucontext *nesucontext;
683 struct nes_alloc_pd_resp uresp;
687 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
688 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
689 netdev_refcnt_read(nesvnic->netdev));
691 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
692 nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
697 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
699 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
700 return ERR_PTR(-ENOMEM);
703 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
704 nespd, nesvnic->nesibdev->ibdev.name);
706 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
709 nesucontext = to_nesucontext(context);
710 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
711 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
712 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
713 nespd->mmap_db_index, nespd->pd_id);
714 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
715 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
716 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
718 return ERR_PTR(-ENOMEM);
721 uresp.pd_id = nespd->pd_id;
722 uresp.mmap_db_index = nespd->mmap_db_index;
723 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
724 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
726 return ERR_PTR(-EFAULT);
729 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
730 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
731 nesucontext->first_free_db = nespd->mmap_db_index + 1;
734 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
742 static int nes_dealloc_pd(struct ib_pd *ibpd)
744 struct nes_ucontext *nesucontext;
745 struct nes_pd *nespd = to_nespd(ibpd);
746 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
747 struct nes_device *nesdev = nesvnic->nesdev;
748 struct nes_adapter *nesadapter = nesdev->nesadapter;
750 if ((ibpd->uobject) && (ibpd->uobject->context)) {
751 nesucontext = to_nesucontext(ibpd->uobject->context);
752 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
753 nespd->mmap_db_index);
754 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
755 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
756 if (nesucontext->first_free_db > nespd->mmap_db_index) {
757 nesucontext->first_free_db = nespd->mmap_db_index;
761 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
762 nespd->pd_id, nespd);
763 nes_free_resource(nesadapter, nesadapter->allocated_pds,
764 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
774 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr,
775 struct ib_udata *udata)
777 return ERR_PTR(-ENOSYS);
784 static int nes_destroy_ah(struct ib_ah *ah)
791 * nes_get_encoded_size
793 static inline u8 nes_get_encoded_size(int *size)
799 } else if (*size <= 128) {
802 } else if (*size <= 512) {
806 return (encoded_size);
814 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
815 struct nes_vnic *nesvnic, int sq_size, int rq_size)
822 struct nes_device *nesdev = nesvnic->nesdev;
823 struct nes_adapter *nesadapter = nesdev->nesadapter;
828 pbl_entries = nespbl->pbl_size >> 3;
829 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
830 nespbl->pbl_size, pbl_entries,
831 (void *)nespbl->pbl_vbase,
832 (unsigned long) nespbl->pbl_pbase);
833 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
834 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
835 /* the first pbl to be fro the rq_vbase... */
836 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
837 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
838 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
840 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
845 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
846 nesqp->page = nespbl->page;
847 if (!nesqp->hwqp.sq_vbase) {
848 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
853 /* Now to get to sq.. we need to calculate how many */
854 /* PBL entries were used by the rq.. */
855 pbl += sq_pbl_entries;
856 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
857 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
858 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
860 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
861 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
862 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
863 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
864 if (!nesadapter->free_256pbl) {
865 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
867 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
872 nesadapter->free_256pbl--;
873 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
875 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
876 pblbuffer = nesqp->pbl_vbase;
877 if (!nesqp->pbl_vbase) {
878 /* memory allocated during nes_reg_user_mr() */
879 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
882 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
883 nesadapter->free_256pbl++;
884 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
888 memset(nesqp->pbl_vbase, 0, 256);
889 /* fill in the page address in the pbl buffer.. */
890 tpbl = pblbuffer + 16;
891 pbl = (__le64 *)nespbl->pbl_vbase;
892 while (sq_pbl_entries--)
895 while (rq_pbl_entries--)
898 /* done with memory allocated during nes_reg_user_mr() */
899 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
904 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
905 /* Round up to a multiple of a page */
906 nesqp->qp_mem_size += PAGE_SIZE - 1;
907 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
909 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
910 &nesqp->hwqp.q2_pbase);
913 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
914 nesqp->pbl_vbase = NULL;
915 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
916 nesadapter->free_256pbl++;
917 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
921 nesqp->sq_kmapped = 1;
922 nesqp->hwqp.q2_vbase = mem;
924 memset(nesqp->hwqp.q2_vbase, 0, 256);
925 nesqp->nesqp_context = mem;
926 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
927 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
936 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
937 int sq_size, int rq_size)
940 struct nes_device *nesdev = nesvnic->nesdev;
942 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
943 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
944 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
945 256; /* this is Q2 */
946 /* Round up to a multiple of a page */
947 nesqp->qp_mem_size += PAGE_SIZE - 1;
948 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
950 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
951 &nesqp->hwqp.sq_pbase);
954 nes_debug(NES_DBG_QP, "PCI consistent memory for "
955 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
956 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
958 memset(mem, 0, nesqp->qp_mem_size);
960 nesqp->hwqp.sq_vbase = mem;
961 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
963 nesqp->hwqp.rq_vbase = mem;
964 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
965 sizeof(struct nes_hw_qp_wqe) * sq_size;
966 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
968 nesqp->hwqp.q2_vbase = mem;
969 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
970 sizeof(struct nes_hw_qp_wqe) * rq_size;
972 memset(nesqp->hwqp.q2_vbase, 0, 256);
974 nesqp->nesqp_context = mem;
975 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
976 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
982 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
984 static void nes_free_qp_mem(struct nes_device *nesdev,
985 struct nes_qp *nesqp, int virt_wqs)
988 struct nes_adapter *nesadapter = nesdev->nesadapter;
990 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
991 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
993 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
994 nesadapter->free_256pbl++;
995 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
996 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
997 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
998 nesqp->pbl_vbase = NULL;
999 if (nesqp->sq_kmapped) {
1000 nesqp->sq_kmapped = 0;
1001 kunmap(nesqp->page);
1010 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1011 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1015 struct nes_pd *nespd = to_nespd(ibpd);
1016 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1017 struct nes_device *nesdev = nesvnic->nesdev;
1018 struct nes_adapter *nesadapter = nesdev->nesadapter;
1019 struct nes_qp *nesqp;
1020 struct nes_cq *nescq;
1021 struct nes_ucontext *nes_ucontext;
1022 struct nes_hw_cqp_wqe *cqp_wqe;
1023 struct nes_cqp_request *cqp_request;
1024 struct nes_create_qp_req req;
1025 struct nes_create_qp_resp uresp;
1026 struct nes_pbl *nespbl = NULL;
1029 /* u32 counter = 0; */
1031 unsigned long flags;
1041 if (init_attr->create_flags)
1042 return ERR_PTR(-EINVAL);
1044 atomic_inc(&qps_created);
1045 switch (init_attr->qp_type) {
1047 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1048 init_attr->cap.max_inline_data = 0;
1050 init_attr->cap.max_inline_data = 64;
1052 sq_size = init_attr->cap.max_send_wr;
1053 rq_size = init_attr->cap.max_recv_wr;
1055 /* check if the encoded sizes are OK or not... */
1056 sq_encoded_size = nes_get_encoded_size(&sq_size);
1057 rq_encoded_size = nes_get_encoded_size(&rq_size);
1059 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1060 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1062 return ERR_PTR(-EINVAL);
1065 init_attr->cap.max_send_wr = sq_size -2;
1066 init_attr->cap.max_recv_wr = rq_size -1;
1067 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1069 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1070 nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
1072 return ERR_PTR(ret);
1075 /* Need 512 (actually now 1024) byte alignment on this structure */
1076 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1078 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1079 return ERR_PTR(-ENOMEM);
1081 u64nesqp = (unsigned long)mem;
1082 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1083 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1084 u64nesqp &= ~u64temp;
1085 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1086 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1087 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1088 nesqp->allocated_buffer = mem;
1091 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1092 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1093 kfree(nesqp->allocated_buffer);
1094 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1095 return ERR_PTR(-EFAULT);
1097 if (req.user_wqe_buffers) {
1100 if (req.user_qp_buffer)
1101 nesqp->nesuqp_addr = req.user_qp_buffer;
1102 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1103 nesqp->user_mode = 1;
1104 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1107 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1108 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1109 list_del(&nespbl->list);
1111 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1112 nespbl, nespbl->user_base);
1117 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1118 (long long unsigned int)req.user_wqe_buffers);
1119 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1120 kfree(nesqp->allocated_buffer);
1121 return ERR_PTR(-EFAULT);
1125 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1126 nesqp->mmap_sq_db_index =
1127 find_next_zero_bit(nes_ucontext->allocated_wqs,
1128 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1129 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1130 nespd->mmap_db_index); */
1131 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1132 nes_debug(NES_DBG_QP,
1133 "db index > max user regions, failing create QP\n");
1134 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1136 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1140 kfree(nesqp->allocated_buffer);
1141 return ERR_PTR(-ENOMEM);
1143 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1144 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1145 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1147 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1148 kfree(nesqp->allocated_buffer);
1149 return ERR_PTR(-EFAULT);
1152 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1153 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1155 nes_debug(NES_DBG_QP,
1156 "error geting qp mem code = %d\n", err);
1157 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1158 kfree(nesqp->allocated_buffer);
1159 return ERR_PTR(-ENOMEM);
1162 nesqp->hwqp.sq_size = sq_size;
1163 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1164 nesqp->hwqp.sq_head = 1;
1165 nesqp->hwqp.rq_size = rq_size;
1166 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1167 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1168 (void *)nesqp->nesqp_context_pbase);
1170 nesqp->hwqp.qp_id = qp_num;
1171 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1172 nesqp->nespd = nespd;
1174 nescq = to_nescq(init_attr->send_cq);
1175 nesqp->nesscq = nescq;
1176 nescq = to_nescq(init_attr->recv_cq);
1177 nesqp->nesrcq = nescq;
1179 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1180 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1181 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1182 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1183 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1184 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1186 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1187 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1189 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1190 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1191 u64temp = (u64)nesqp->hwqp.sq_pbase;
1192 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1193 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1197 u64temp = (u64)nesqp->hwqp.sq_pbase;
1198 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1199 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1200 u64temp = (u64)nesqp->hwqp.rq_pbase;
1201 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1202 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1204 u64temp = (u64)nesqp->pbl_pbase;
1205 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1206 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1209 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1210 nesvnic->next_qp_nic_index,
1211 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1212 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1213 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1214 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1215 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1216 nesvnic->next_qp_nic_index++;
1217 if ((nesvnic->next_qp_nic_index > 3) ||
1218 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1219 nesvnic->next_qp_nic_index = 0;
1221 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1223 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1224 u64temp = (u64)nesqp->hwqp.q2_pbase;
1225 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1226 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1227 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1228 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1229 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1230 NES_QPCONTEXT_ORDIRD_AAH |
1231 ((((u32)nesadapter->max_irrq_wr) <<
1232 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1233 if (disable_mpa_crc) {
1234 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1235 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1240 cqp_request = nes_get_cqp_request(nesdev);
1241 if (cqp_request == NULL) {
1242 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1243 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1244 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1245 kfree(nesqp->allocated_buffer);
1246 return ERR_PTR(-ENOMEM);
1248 cqp_request->waiting = 1;
1249 cqp_wqe = &cqp_request->cqp_wqe;
1252 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1253 NES_CQP_QP_IWARP_STATE_IDLE;
1255 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1256 NES_CQP_QP_IWARP_STATE_IDLE;
1258 opcode |= NES_CQP_QP_CQS_VALID;
1259 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1260 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1261 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1263 u64temp = (u64)nesqp->nesqp_context_pbase;
1264 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1266 atomic_set(&cqp_request->refcount, 2);
1267 nes_post_cqp_request(nesdev, cqp_request);
1270 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1272 ret = wait_event_timeout(cqp_request->waitq,
1273 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1274 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1275 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1276 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1277 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1278 cqp_request->major_code, cqp_request->minor_code);
1279 if ((!ret) || (cqp_request->major_code)) {
1280 nes_put_cqp_request(nesdev, cqp_request);
1281 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1282 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1283 kfree(nesqp->allocated_buffer);
1285 return ERR_PTR(-ETIME);
1287 return ERR_PTR(-EIO);
1291 nes_put_cqp_request(nesdev, cqp_request);
1293 if (ibpd->uobject) {
1294 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1295 uresp.mmap_rq_db_index = 0;
1296 uresp.actual_sq_size = sq_size;
1297 uresp.actual_rq_size = rq_size;
1298 uresp.qp_id = nesqp->hwqp.qp_id;
1299 uresp.nes_drv_opt = nes_drv_opt;
1300 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1301 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1302 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1303 kfree(nesqp->allocated_buffer);
1304 return ERR_PTR(-EFAULT);
1308 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1309 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1310 spin_lock_init(&nesqp->lock);
1311 nes_add_ref(&nesqp->ibqp);
1314 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1315 return ERR_PTR(-EINVAL);
1317 init_completion(&nesqp->sq_drained);
1318 init_completion(&nesqp->rq_drained);
1320 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1321 init_timer(&nesqp->terminate_timer);
1322 nesqp->terminate_timer.function = nes_terminate_timeout;
1323 nesqp->terminate_timer.data = (unsigned long)nesqp;
1325 /* update the QP table */
1326 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1327 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1328 netdev_refcnt_read(nesvnic->netdev));
1330 return &nesqp->ibqp;
1336 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1342 unsigned long flags = 0;
1344 spin_lock_irqsave(&nescq->lock, flags);
1346 cq_head = nescq->hw_cq.cq_head;
1347 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1349 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1350 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1351 u64temp = (((u64)hi) << 32) | ((u64)lo);
1352 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1353 if (u64temp == (u64)(unsigned long)nesqp) {
1354 /* Zero the context value so cqe will be ignored */
1355 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1356 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1359 if (++cq_head >= nescq->hw_cq.cq_size)
1363 spin_unlock_irqrestore(&nescq->lock, flags);
1370 static int nes_destroy_qp(struct ib_qp *ibqp)
1372 struct nes_qp *nesqp = to_nesqp(ibqp);
1373 struct nes_ucontext *nes_ucontext;
1374 struct ib_qp_attr attr;
1375 struct iw_cm_id *cm_id;
1376 struct iw_cm_event cm_event;
1379 atomic_inc(&sw_qps_destroyed);
1380 nesqp->destroyed = 1;
1382 /* Blow away the connection if it exists. */
1383 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1384 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1385 attr.qp_state = IB_QPS_ERR;
1386 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1389 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1390 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1391 cm_id = nesqp->cm_id;
1392 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1393 cm_event.status = -ETIMEDOUT;
1394 cm_event.local_addr = cm_id->local_addr;
1395 cm_event.remote_addr = cm_id->remote_addr;
1396 cm_event.private_data = NULL;
1397 cm_event.private_data_len = 0;
1399 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1400 "QP%u. cm_id = %p, refcount = %u. \n",
1401 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1403 cm_id->rem_ref(cm_id);
1404 ret = cm_id->event_handler(cm_id, &cm_event);
1406 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1409 if (nesqp->user_mode) {
1410 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1411 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1412 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1413 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1414 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1415 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1418 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1419 nesqp->sq_kmapped = 0;
1420 kunmap(nesqp->page);
1423 /* Clean any pending completions from the cq(s) */
1425 nes_clean_cq(nesqp, nesqp->nesscq);
1427 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1428 nes_clean_cq(nesqp, nesqp->nesrcq);
1430 nes_rem_ref(&nesqp->ibqp);
1438 static struct ib_cq *nes_create_cq(struct ib_device *ibdev,
1439 const struct ib_cq_init_attr *attr,
1440 struct ib_ucontext *context,
1441 struct ib_udata *udata)
1443 int entries = attr->cqe;
1445 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1446 struct nes_device *nesdev = nesvnic->nesdev;
1447 struct nes_adapter *nesadapter = nesdev->nesadapter;
1448 struct nes_cq *nescq;
1449 struct nes_ucontext *nes_ucontext = NULL;
1450 struct nes_cqp_request *cqp_request;
1452 struct nes_hw_cqp_wqe *cqp_wqe;
1453 struct nes_pbl *nespbl = NULL;
1454 struct nes_create_cq_req req;
1455 struct nes_create_cq_resp resp;
1458 u32 pbl_entries = 1;
1460 unsigned long flags;
1464 return ERR_PTR(-EINVAL);
1466 if (entries > nesadapter->max_cqe)
1467 return ERR_PTR(-EINVAL);
1469 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1470 nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
1472 return ERR_PTR(err);
1475 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1477 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1478 return ERR_PTR(-ENOMEM);
1481 nescq->hw_cq.cq_size = max(entries + 1, 5);
1482 nescq->hw_cq.cq_number = cq_num;
1483 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1487 nes_ucontext = to_nesucontext(context);
1488 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1489 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1491 return ERR_PTR(-EFAULT);
1493 nesvnic->mcrq_ucontext = nes_ucontext;
1494 nes_ucontext->mcrqf = req.mcrqf;
1495 if (nes_ucontext->mcrqf) {
1496 if (nes_ucontext->mcrqf & 0x80000000)
1497 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1498 else if (nes_ucontext->mcrqf & 0x40000000)
1499 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1501 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1502 nescq->mcrqf = nes_ucontext->mcrqf;
1503 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1505 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1506 (unsigned long)req.user_cq_buffer, entries);
1508 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1509 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1510 list_del(&nespbl->list);
1512 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1518 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1520 return ERR_PTR(-EFAULT);
1523 pbl_entries = nespbl->pbl_size >> 3;
1524 nescq->cq_mem_size = 0;
1526 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1527 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1528 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1530 /* allocate the physical buffer space */
1531 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1532 &nescq->hw_cq.cq_pbase);
1534 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1535 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1537 return ERR_PTR(-ENOMEM);
1540 nescq->hw_cq.cq_vbase = mem;
1541 nescq->hw_cq.cq_head = 0;
1542 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1543 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1544 (u32)nescq->hw_cq.cq_pbase);
1547 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1548 spin_lock_init(&nescq->lock);
1550 /* send CreateCQ request to CQP */
1551 cqp_request = nes_get_cqp_request(nesdev);
1552 if (cqp_request == NULL) {
1553 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1555 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1556 nescq->hw_cq.cq_pbase);
1558 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1559 nespbl->pbl_vbase, nespbl->pbl_pbase);
1563 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1565 return ERR_PTR(-ENOMEM);
1567 cqp_request->waiting = 1;
1568 cqp_wqe = &cqp_request->cqp_wqe;
1570 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1571 NES_CQP_CQ_CHK_OVERFLOW |
1572 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1574 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1576 if (pbl_entries != 1) {
1577 if (pbl_entries > 32) {
1579 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1580 if (nesadapter->free_4kpbl == 0) {
1581 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1582 nes_free_cqp_request(nesdev, cqp_request);
1584 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1585 nescq->hw_cq.cq_pbase);
1587 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1588 nespbl->pbl_vbase, nespbl->pbl_pbase);
1591 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1593 return ERR_PTR(-ENOMEM);
1595 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1596 nescq->virtual_cq = 2;
1597 nesadapter->free_4kpbl--;
1600 /* use 256 byte pbl */
1601 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1602 if (nesadapter->free_256pbl == 0) {
1603 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1604 nes_free_cqp_request(nesdev, cqp_request);
1606 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1607 nescq->hw_cq.cq_pbase);
1609 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1610 nespbl->pbl_vbase, nespbl->pbl_pbase);
1613 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1615 return ERR_PTR(-ENOMEM);
1617 opcode |= NES_CQP_CQ_VIRT;
1618 nescq->virtual_cq = 1;
1619 nesadapter->free_256pbl--;
1624 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1626 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1627 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1628 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1629 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1632 if (pbl_entries != 1)
1633 u64temp = (u64)nespbl->pbl_pbase;
1635 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1636 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1637 nes_ucontext->mmap_db_index[0]);
1639 u64temp = (u64)nescq->hw_cq.cq_pbase;
1640 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1642 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1643 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1644 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1645 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1646 cpu_to_le32((u32)(u64temp >> 1));
1647 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1648 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1650 atomic_set(&cqp_request->refcount, 2);
1651 nes_post_cqp_request(nesdev, cqp_request);
1654 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1655 nescq->hw_cq.cq_number);
1656 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1657 NES_EVENT_TIMEOUT * 2);
1658 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1659 nescq->hw_cq.cq_number, ret);
1660 if ((!ret) || (cqp_request->major_code)) {
1661 nes_put_cqp_request(nesdev, cqp_request);
1663 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1664 nescq->hw_cq.cq_pbase);
1666 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1667 nespbl->pbl_vbase, nespbl->pbl_pbase);
1670 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1672 return ERR_PTR(-EIO);
1674 nes_put_cqp_request(nesdev, cqp_request);
1677 /* free the nespbl */
1678 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1681 resp.cq_id = nescq->hw_cq.cq_number;
1682 resp.cq_size = nescq->hw_cq.cq_size;
1683 resp.mmap_db_index = 0;
1684 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
1685 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1687 return ERR_PTR(-EFAULT);
1691 return &nescq->ibcq;
1698 static int nes_destroy_cq(struct ib_cq *ib_cq)
1700 struct nes_cq *nescq;
1701 struct nes_device *nesdev;
1702 struct nes_vnic *nesvnic;
1703 struct nes_adapter *nesadapter;
1704 struct nes_hw_cqp_wqe *cqp_wqe;
1705 struct nes_cqp_request *cqp_request;
1706 unsigned long flags;
1713 nescq = to_nescq(ib_cq);
1714 nesvnic = to_nesvnic(ib_cq->device);
1715 nesdev = nesvnic->nesdev;
1716 nesadapter = nesdev->nesadapter;
1718 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1720 /* Send DestroyCQ request to CQP */
1721 cqp_request = nes_get_cqp_request(nesdev);
1722 if (cqp_request == NULL) {
1723 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1726 cqp_request->waiting = 1;
1727 cqp_wqe = &cqp_request->cqp_wqe;
1728 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1729 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1730 if (nescq->virtual_cq == 1) {
1731 nesadapter->free_256pbl++;
1732 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1733 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1734 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1736 } else if (nescq->virtual_cq == 2) {
1737 nesadapter->free_4kpbl++;
1738 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1739 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1740 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1742 opcode |= NES_CQP_CQ_4KB_CHUNK;
1745 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1747 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1748 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1749 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1750 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1752 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1754 atomic_set(&cqp_request->refcount, 2);
1755 nes_post_cqp_request(nesdev, cqp_request);
1758 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1759 nescq->hw_cq.cq_number);
1760 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1762 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1763 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1764 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1765 cqp_request->minor_code);
1767 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1768 nescq->hw_cq.cq_number);
1770 } else if (cqp_request->major_code) {
1771 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1772 nescq->hw_cq.cq_number);
1777 nes_put_cqp_request(nesdev, cqp_request);
1779 if (nescq->cq_mem_size)
1780 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1781 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1790 static u32 root_256(struct nes_device *nesdev,
1791 struct nes_root_vpbl *root_vpbl,
1792 struct nes_root_vpbl *new_root,
1798 if (pbl_count_4k == 1) {
1799 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1800 512, &new_root->pbl_pbase);
1802 if (new_root->pbl_vbase == NULL)
1805 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1806 for (i = 0; i < 16; i++) {
1807 new_root->pbl_vbase[i].pa_low =
1808 cpu_to_le32((u32)leaf_pbl);
1809 new_root->pbl_vbase[i].pa_high =
1810 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1814 for (i = 3; i >= 0; i--) {
1816 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1817 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1818 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1820 for (k = 1; k < 16; k++) {
1822 root_vpbl->pbl_vbase[j + k].pa_low =
1823 cpu_to_le32((u32)leaf_pbl);
1824 root_vpbl->pbl_vbase[j + k].pa_high =
1825 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1837 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1838 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1839 dma_addr_t single_buffer, u16 pbl_count_4k,
1840 u16 residual_page_count_4k, int acc, u64 *iova_start,
1841 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1843 struct nes_hw_cqp_wqe *cqp_wqe;
1844 struct nes_cqp_request *cqp_request;
1845 unsigned long flags;
1847 struct nes_adapter *nesadapter = nesdev->nesadapter;
1849 u16 pbl_count_256 = 0;
1851 u8 use_256_pbls = 0;
1853 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1854 struct nes_root_vpbl new_root = { 0, NULL, NULL };
1858 /* Register the region with the adapter */
1859 cqp_request = nes_get_cqp_request(nesdev);
1860 if (cqp_request == NULL) {
1861 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1864 cqp_request->waiting = 1;
1865 cqp_wqe = &cqp_request->cqp_wqe;
1868 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1870 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1871 pbl_count_256 = (pg_cnt + 31) / 32;
1873 if (pbl_count_256 <= nesadapter->free_256pbl)
1875 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1877 } else if (pg_cnt <= 2048) {
1878 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1879 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1881 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1884 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1888 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1893 pbl_count = pbl_count_256;
1894 nesadapter->free_256pbl -= pbl_count + use_two_level;
1895 } else if (use_4k_pbls) {
1896 pbl_count = pbl_count_4k;
1897 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1899 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1900 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1901 nes_free_cqp_request(nesdev, cqp_request);
1905 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1908 if (use_256_pbls && use_two_level) {
1909 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1910 if (new_root.pbl_pbase != 0)
1911 root_vpbl = &new_root;
1913 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1914 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1917 if (pbl_count_4k == 1)
1919 pbl_count = pbl_count_4k;
1921 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1922 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1925 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1927 if (use_4k_pbls == 0)
1932 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
1933 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
1934 if (acc & IB_ACCESS_LOCAL_WRITE)
1935 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
1936 if (acc & IB_ACCESS_REMOTE_WRITE)
1937 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
1938 if (acc & IB_ACCESS_REMOTE_READ)
1939 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
1940 if (acc & IB_ACCESS_MW_BIND)
1941 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
1943 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1944 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1945 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
1946 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
1948 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
1949 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
1950 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
1951 cpu_to_le32(nespd->pd_id & 0x00007fff);
1952 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
1954 if (pbl_count == 0) {
1955 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
1957 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
1958 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
1959 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
1962 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
1966 atomic_set(&cqp_request->refcount, 2);
1967 nes_post_cqp_request(nesdev, cqp_request);
1970 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1972 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
1973 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1974 stag, ret, cqp_request->major_code, cqp_request->minor_code);
1975 major_code = cqp_request->major_code;
1976 nes_put_cqp_request(nesdev, cqp_request);
1978 if ((!ret || major_code) && pbl_count != 0) {
1979 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1981 nesadapter->free_256pbl += pbl_count + use_two_level;
1982 else if (use_4k_pbls)
1983 nesadapter->free_4kpbl += pbl_count + use_two_level;
1984 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1986 if (new_root.pbl_pbase)
1987 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
1988 new_root.pbl_pbase);
1992 else if (major_code)
1995 *actual_pbl_cnt = pbl_count + use_two_level;
1996 *used_4k_pbls = use_4k_pbls;
2004 struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd, u64 addr, u64 size,
2005 int acc, u64 *iova_start)
2008 struct nes_pd *nespd = to_nespd(ib_pd);
2009 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2010 struct nes_device *nesdev = nesvnic->nesdev;
2011 struct nes_adapter *nesadapter = nesdev->nesadapter;
2012 struct nes_mr *nesmr;
2014 struct nes_vpbl vpbl;
2015 struct nes_root_vpbl root_vpbl;
2019 u32 next_stag_index = 0;
2028 vpbl.pbl_vbase = NULL;
2029 root_vpbl.pbl_vbase = NULL;
2030 root_vpbl.pbl_pbase = 0;
2032 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2033 stag_key = (u8)next_stag_index;
2037 next_stag_index >>= 8;
2038 next_stag_index %= nesadapter->max_mr;
2040 if ((addr ^ *iova_start) & ~PAGE_MASK)
2041 return ERR_PTR(-EINVAL);
2043 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2044 &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
2046 return ERR_PTR(err);
2049 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2051 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2052 return ERR_PTR(-ENOMEM);
2055 /* Allocate a 4K buffer for the PBL */
2056 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2058 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2059 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2060 if (!vpbl.pbl_vbase) {
2061 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2062 ibmr = ERR_PTR(-ENOMEM);
2070 if (mask & ~PAGE_MASK) {
2071 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2072 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2073 ibmr = ERR_PTR(-EINVAL);
2078 region_length += size;
2079 vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)addr & PAGE_MASK);
2080 vpbl.pbl_vbase[0].pa_high = cpu_to_le32((u32)((((u64)addr) >> 32)));
2082 stag = stag_index << 8;
2084 stag += (u32)stag_key;
2086 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2087 " length = 0x%016lX, index = 0x%08X\n",
2088 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2090 /* Make the leaf PBL the root if only one PBL */
2091 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2098 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2099 addr, pbl_count, 1, acc, iova_start,
2100 &nesmr->pbls_used, &nesmr->pbl_4k);
2103 nesmr->ibmr.rkey = stag;
2104 nesmr->ibmr.lkey = stag;
2105 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2106 ibmr = &nesmr->ibmr;
2109 ibmr = ERR_PTR(-ENOMEM);
2113 /* single PBL case */
2114 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2122 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2126 nes_debug(NES_DBG_MR, "\n");
2128 return nes_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva);
2134 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2135 u64 virt, int acc, struct ib_udata *udata)
2140 dma_addr_t last_dma_addr = 0;
2141 dma_addr_t first_dma_addr = 0;
2142 struct nes_pd *nespd = to_nespd(pd);
2143 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2144 struct nes_device *nesdev = nesvnic->nesdev;
2145 struct nes_adapter *nesadapter = nesdev->nesadapter;
2146 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2147 struct scatterlist *sg;
2148 struct nes_ucontext *nes_ucontext;
2149 struct nes_pbl *nespbl;
2150 struct nes_mr *nesmr;
2151 struct ib_umem *region;
2152 struct nes_mem_reg_req req;
2153 struct nes_vpbl vpbl;
2154 struct nes_root_vpbl root_vpbl;
2155 int entry, page_index;
2157 int err, pbl_depth = 0;
2162 u32 next_stag_index;
2164 u32 root_pbl_index = 0;
2165 u32 cur_pbl_index = 0;
2172 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2173 if (IS_ERR(region)) {
2174 return (struct ib_mr *)region;
2177 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2178 " offset = %u, page size = %u.\n",
2179 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2180 ib_umem_offset(region), region->page_size);
2182 skip_pages = ((u32)ib_umem_offset(region)) >> 12;
2184 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2185 ib_umem_release(region);
2186 return ERR_PTR(-EFAULT);
2188 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2190 switch (req.reg_type) {
2191 case IWNES_MEMREG_TYPE_MEM:
2194 vpbl.pbl_vbase = NULL;
2195 root_vpbl.pbl_vbase = NULL;
2196 root_vpbl.pbl_pbase = 0;
2198 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2199 stag_key = (u8)next_stag_index;
2201 driver_key = next_stag_index & 0x70000000;
2203 next_stag_index >>= 8;
2204 next_stag_index %= nesadapter->max_mr;
2206 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2207 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
2209 ib_umem_release(region);
2210 return ERR_PTR(err);
2213 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2215 ib_umem_release(region);
2216 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2217 return ERR_PTR(-ENOMEM);
2219 nesmr->region = region;
2221 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2222 if (sg_dma_address(sg) & ~PAGE_MASK) {
2223 ib_umem_release(region);
2224 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2225 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2226 (unsigned int) sg_dma_address(sg));
2227 ibmr = ERR_PTR(-EINVAL);
2229 goto reg_user_mr_err;
2232 if (!sg_dma_len(sg)) {
2233 ib_umem_release(region);
2234 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2236 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2237 ibmr = ERR_PTR(-EINVAL);
2239 goto reg_user_mr_err;
2242 region_length += sg_dma_len(sg);
2243 chunk_pages = sg_dma_len(sg) >> 12;
2244 region_length -= skip_pages << 12;
2245 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2247 if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
2249 if ((page_count&0x01FF) == 0) {
2250 if (page_count >= 1024 * 512) {
2251 ib_umem_release(region);
2252 nes_free_resource(nesadapter,
2253 nesadapter->allocated_mrs, stag_index);
2255 ibmr = ERR_PTR(-E2BIG);
2256 goto reg_user_mr_err;
2258 if (root_pbl_index == 1) {
2259 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2260 8192, &root_vpbl.pbl_pbase);
2261 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2262 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2263 if (!root_vpbl.pbl_vbase) {
2264 ib_umem_release(region);
2265 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2267 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2270 ibmr = ERR_PTR(-ENOMEM);
2271 goto reg_user_mr_err;
2273 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2275 if (!root_vpbl.leaf_vpbl) {
2276 ib_umem_release(region);
2277 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2278 root_vpbl.pbl_pbase);
2279 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2281 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2284 ibmr = ERR_PTR(-ENOMEM);
2285 goto reg_user_mr_err;
2287 root_vpbl.pbl_vbase[0].pa_low =
2288 cpu_to_le32((u32)vpbl.pbl_pbase);
2289 root_vpbl.pbl_vbase[0].pa_high =
2290 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2291 root_vpbl.leaf_vpbl[0] = vpbl;
2293 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2295 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2296 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2297 if (!vpbl.pbl_vbase) {
2298 ib_umem_release(region);
2299 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2300 ibmr = ERR_PTR(-ENOMEM);
2302 goto reg_user_mr_err;
2304 if (1 <= root_pbl_index) {
2305 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2306 cpu_to_le32((u32)vpbl.pbl_pbase);
2307 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2308 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2309 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2315 if (page_count != 0) {
2316 if ((last_dma_addr+4096) !=
2317 (sg_dma_address(sg)+
2320 last_dma_addr = sg_dma_address(sg)+
2323 first_dma_addr = sg_dma_address(sg)+
2325 last_dma_addr = first_dma_addr;
2329 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2330 cpu_to_le32((u32)(sg_dma_address(sg)+
2331 (page_index*4096)));
2332 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2333 cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2334 (page_index*4096))) >> 32)));
2341 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2342 " stag_key=0x%08x\n",
2343 stag_index, driver_key, stag_key);
2344 stag = stag_index << 8;
2346 stag += (u32)stag_key;
2349 /* Make the leaf PBL the root if only one PBL */
2350 if (root_pbl_index == 1) {
2351 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2357 pbl_count = root_pbl_index;
2360 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2361 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2362 stag, (unsigned int)iova_start,
2363 (unsigned int)region_length, stag_index,
2364 (unsigned long long)region->length, pbl_count);
2365 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2366 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2367 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2369 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2372 nesmr->ibmr.rkey = stag;
2373 nesmr->ibmr.lkey = stag;
2374 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2375 ibmr = &nesmr->ibmr;
2377 ib_umem_release(region);
2379 ibmr = ERR_PTR(-ENOMEM);
2383 /* free the resources */
2384 if (root_pbl_index == 1) {
2385 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2388 for (page_index=0; page_index<root_pbl_index; page_index++) {
2389 pci_free_consistent(nesdev->pcidev, 4096,
2390 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2391 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2393 kfree(root_vpbl.leaf_vpbl);
2394 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2395 root_vpbl.pbl_pbase);
2398 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2401 case IWNES_MEMREG_TYPE_QP:
2402 case IWNES_MEMREG_TYPE_CQ:
2403 if (!region->length) {
2404 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2405 ib_umem_release(region);
2406 return ERR_PTR(-EINVAL);
2408 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2410 ib_umem_release(region);
2411 return ERR_PTR(-ENOMEM);
2413 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2415 ib_umem_release(region);
2417 return ERR_PTR(-ENOMEM);
2419 nesmr->region = region;
2420 nes_ucontext = to_nesucontext(pd->uobject->context);
2421 pbl_depth = region->length >> 12;
2422 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2423 nespbl->pbl_size = pbl_depth*sizeof(u64);
2424 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2425 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2427 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2430 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2431 nespbl->pbl_size, pbl_depth);
2432 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2433 &nespbl->pbl_pbase);
2435 ib_umem_release(region);
2438 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2439 return ERR_PTR(-ENOMEM);
2442 nespbl->pbl_vbase = (u64 *)pbl;
2443 nespbl->user_base = start;
2444 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2445 " pbl_vbase=%p user_base=0x%lx\n",
2446 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2447 (void *) nespbl->pbl_vbase, nespbl->user_base);
2449 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2450 chunk_pages = sg_dma_len(sg) >> 12;
2451 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2453 nespbl->page = sg_page(sg);
2457 for (page_index = 0; page_index < chunk_pages; page_index++) {
2458 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2459 (sg_dma_address(sg)+
2460 (page_index*4096)));
2461 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2462 (sg_dma_address(sg)+
2463 (page_index*4096)))>>32);
2464 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2465 (unsigned long long)*pbl,
2466 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2471 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2472 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2474 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2476 nesmr->ibmr.rkey = -1;
2477 nesmr->ibmr.lkey = -1;
2478 nesmr->mode = req.reg_type;
2479 return &nesmr->ibmr;
2482 ib_umem_release(region);
2483 return ERR_PTR(-ENOSYS);
2490 static int nes_dereg_mr(struct ib_mr *ib_mr)
2492 struct nes_mr *nesmr = to_nesmr(ib_mr);
2493 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2494 struct nes_device *nesdev = nesvnic->nesdev;
2495 struct nes_adapter *nesadapter = nesdev->nesadapter;
2496 struct nes_hw_cqp_wqe *cqp_wqe;
2497 struct nes_cqp_request *cqp_request;
2498 unsigned long flags;
2505 pci_free_consistent(nesdev->pcidev,
2506 nesmr->max_pages * sizeof(u64),
2510 if (nesmr->region) {
2511 ib_umem_release(nesmr->region);
2513 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2518 /* Deallocate the region with the adapter */
2520 cqp_request = nes_get_cqp_request(nesdev);
2521 if (cqp_request == NULL) {
2522 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2525 cqp_request->waiting = 1;
2526 cqp_wqe = &cqp_request->cqp_wqe;
2528 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2529 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2530 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2531 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2532 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2534 atomic_set(&cqp_request->refcount, 2);
2535 nes_post_cqp_request(nesdev, cqp_request);
2538 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2539 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2541 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2542 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2543 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2545 major_code = cqp_request->major_code;
2546 minor_code = cqp_request->minor_code;
2548 nes_put_cqp_request(nesdev, cqp_request);
2551 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2552 " ib_mr=%p, rkey = 0x%08X\n",
2553 ib_mr, ib_mr->rkey);
2555 } else if (major_code) {
2556 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2557 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2558 major_code, minor_code, ib_mr, ib_mr->rkey);
2562 if (nesmr->pbls_used != 0) {
2563 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2564 if (nesmr->pbl_4k) {
2565 nesadapter->free_4kpbl += nesmr->pbls_used;
2566 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2567 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2568 "exceeded the max(%u)\n",
2569 nesadapter->free_4kpbl,
2570 nesadapter->max_4kpbl);
2572 nesadapter->free_256pbl += nesmr->pbls_used;
2573 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2574 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2575 "exceeded the max(%u)\n",
2576 nesadapter->free_256pbl,
2577 nesadapter->max_256pbl);
2579 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2581 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2582 (ib_mr->rkey & 0x0fffff00) >> 8);
2593 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2596 struct nes_ib_device *nesibdev =
2597 container_of(dev, struct nes_ib_device, ibdev.dev);
2598 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2600 nes_debug(NES_DBG_INIT, "\n");
2601 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2608 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2611 nes_debug(NES_DBG_INIT, "\n");
2612 return sprintf(buf, "NES020\n");
2619 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2622 nes_debug(NES_DBG_INIT, "\n");
2623 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2627 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2628 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2629 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2631 static struct device_attribute *nes_dev_attributes[] = {
2641 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2642 int attr_mask, struct ib_qp_init_attr *init_attr)
2644 struct nes_qp *nesqp = to_nesqp(ibqp);
2646 nes_debug(NES_DBG_QP, "\n");
2648 attr->qp_access_flags = 0;
2649 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2650 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2651 attr->cap.max_recv_sge = 1;
2652 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2653 attr->cap.max_inline_data = 0;
2655 attr->cap.max_inline_data = 64;
2657 init_attr->event_handler = nesqp->ibqp.event_handler;
2658 init_attr->qp_context = nesqp->ibqp.qp_context;
2659 init_attr->send_cq = nesqp->ibqp.send_cq;
2660 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2661 init_attr->srq = nesqp->ibqp.srq;
2662 init_attr->cap = attr->cap;
2671 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2672 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2674 struct nes_hw_cqp_wqe *cqp_wqe;
2675 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2676 /* struct iw_cm_event cm_event; */
2677 struct nes_cqp_request *cqp_request;
2681 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2682 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2684 cqp_request = nes_get_cqp_request(nesdev);
2685 if (cqp_request == NULL) {
2686 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2689 if (wait_completion) {
2690 cqp_request->waiting = 1;
2692 cqp_request->waiting = 0;
2694 cqp_wqe = &cqp_request->cqp_wqe;
2696 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2697 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2698 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2699 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2700 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2701 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2702 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2704 /* If sending a terminate message, fill in the length (in words) */
2705 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2706 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2707 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2708 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2711 atomic_set(&cqp_request->refcount, 2);
2712 nes_post_cqp_request(nesdev, cqp_request);
2715 if (wait_completion) {
2716 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2717 nesqp->hwqp.qp_id); */
2718 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2720 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2721 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2722 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2723 major_code = cqp_request->major_code;
2725 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2726 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2727 nesqp->hwqp.qp_id, cqp_request->major_code,
2728 cqp_request->minor_code, next_iwarp_state);
2731 nes_put_cqp_request(nesdev, cqp_request);
2735 else if (major_code)
2748 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2749 int attr_mask, struct ib_udata *udata)
2751 struct nes_qp *nesqp = to_nesqp(ibqp);
2752 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2753 struct nes_device *nesdev = nesvnic->nesdev;
2756 u32 next_iwarp_state = 0;
2758 unsigned long qplockflags;
2760 u16 original_last_aeq;
2761 u8 issue_modify_qp = 0;
2764 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2765 " iwarp_state=0x%X, refcount=%d\n",
2766 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2767 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2769 spin_lock_irqsave(&nesqp->lock, qplockflags);
2771 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2772 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2773 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2774 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2776 if (attr_mask & IB_QP_STATE) {
2777 switch (attr->qp_state) {
2779 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2781 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2782 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2785 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2786 issue_modify_qp = 1;
2789 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2791 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2792 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2795 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2796 issue_modify_qp = 1;
2799 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2801 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2802 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2805 if (nesqp->cm_id == NULL) {
2806 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2807 nesqp->hwqp.qp_id );
2808 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2811 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2812 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2813 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2814 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2815 issue_modify_qp = 1;
2816 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2817 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2818 nesqp->hte_added = 1;
2821 issue_modify_qp = 1;
2822 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2823 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2824 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2825 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2828 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2829 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2830 " ignored due to current iWARP state\n",
2832 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2835 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
2836 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2837 " already done based on hw state.\n",
2839 issue_modify_qp = 0;
2841 switch (nesqp->hw_iwarp_state) {
2842 case NES_AEQE_IWARP_STATE_CLOSING:
2843 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2845 case NES_AEQE_IWARP_STATE_TERMINATE:
2846 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2848 case NES_AEQE_IWARP_STATE_ERROR:
2849 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2852 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2853 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
2859 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
2861 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
2862 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2865 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2866 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2867 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
2868 issue_modify_qp = 1;
2872 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
2873 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2876 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
2878 if (nesqp->term_flags)
2879 del_timer(&nesqp->terminate_timer);
2881 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2882 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2883 if (nesqp->hte_added) {
2884 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
2885 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
2886 nesqp->hte_added = 0;
2888 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
2889 (nesdev->iw_status) &&
2890 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
2891 next_iwarp_state |= NES_CQP_QP_RESET;
2893 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
2894 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
2897 issue_modify_qp = 1;
2898 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
2901 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2906 nesqp->ibqp_state = attr->qp_state;
2907 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
2908 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
2909 nesqp->iwarp_state);
2912 if (attr_mask & IB_QP_ACCESS_FLAGS) {
2913 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
2914 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2915 NES_QPCONTEXT_MISC_RDMA_READ_EN);
2916 issue_modify_qp = 1;
2918 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
2919 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
2920 issue_modify_qp = 1;
2922 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
2923 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
2924 issue_modify_qp = 1;
2926 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
2927 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
2928 issue_modify_qp = 1;
2931 if (nesqp->user_mode) {
2932 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2933 NES_QPCONTEXT_MISC_RDMA_READ_EN);
2934 issue_modify_qp = 1;
2938 original_last_aeq = nesqp->last_aeq;
2939 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2941 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
2946 if (issue_modify_qp) {
2947 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
2948 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
2950 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
2951 " failed for QP%u.\n",
2952 next_iwarp_state, nesqp->hwqp.qp_id);
2956 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
2957 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
2958 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2959 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2960 original_last_aeq, nesqp->last_aeq);
2961 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
2963 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
2964 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
2965 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2966 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2967 original_last_aeq, nesqp->last_aeq);
2968 /* this one is for the cm_disconnect thread */
2969 spin_lock_irqsave(&nesqp->lock, qplockflags);
2970 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
2971 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
2972 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2973 nes_cm_disconn(nesqp);
2975 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
2976 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2979 spin_lock_irqsave(&nesqp->lock, qplockflags);
2981 /* These two are for the timer thread */
2982 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
2983 nesqp->cm_id->add_ref(nesqp->cm_id);
2984 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
2985 " need ae to finish up, original_last_aeq = 0x%04X."
2986 " last_aeq = 0x%04X, scheduling timer.\n",
2987 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2988 original_last_aeq, nesqp->last_aeq);
2989 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
2991 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2993 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2994 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
2995 " need ae to finish up, original_last_aeq = 0x%04X."
2996 " last_aeq = 0x%04X.\n",
2997 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2998 original_last_aeq, nesqp->last_aeq);
3002 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3003 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3004 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3005 original_last_aeq, nesqp->last_aeq);
3008 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3009 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3010 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3011 original_last_aeq, nesqp->last_aeq);
3016 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3017 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3024 * nes_muticast_attach
3026 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3028 nes_debug(NES_DBG_INIT, "\n");
3034 * nes_multicast_detach
3036 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3038 nes_debug(NES_DBG_INIT, "\n");
3046 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3047 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
3048 const struct ib_mad_hdr *in, size_t in_mad_size,
3049 struct ib_mad_hdr *out, size_t *out_mad_size,
3050 u16 *out_mad_pkey_index)
3052 nes_debug(NES_DBG_INIT, "\n");
3057 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3060 int total_payload_length = 0;
3061 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3062 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3063 ib_wr->sg_list[sge_index].addr);
3064 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3065 ib_wr->sg_list[sge_index].length);
3067 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3068 (ib_wr->sg_list[sge_index].lkey));
3070 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3072 total_payload_length += ib_wr->sg_list[sge_index].length;
3074 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3075 total_payload_length);
3076 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3077 total_payload_length);
3083 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3084 struct ib_send_wr **bad_wr)
3087 unsigned long flags = 0;
3088 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3089 struct nes_device *nesdev = nesvnic->nesdev;
3090 struct nes_qp *nesqp = to_nesqp(ibqp);
3091 struct nes_hw_qp_wqe *wqe;
3093 u32 qsize = nesqp->hwqp.sq_size;
3099 if (nesqp->ibqp_state > IB_QPS_RTS) {
3104 spin_lock_irqsave(&nesqp->lock, flags);
3106 head = nesqp->hwqp.sq_head;
3109 /* Check for QP error */
3110 if (nesqp->term_flags) {
3115 /* Check for SQ overflow */
3116 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3121 wqe = &nesqp->hwqp.sq_vbase[head];
3122 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3123 nesqp->hwqp.qp_id, wqe, head); */
3124 nes_fill_init_qp_wqe(wqe, nesqp, head);
3125 u64temp = (u64)(ib_wr->wr_id);
3126 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3128 switch (ib_wr->opcode) {
3130 case IB_WR_SEND_WITH_INV:
3131 if (IB_WR_SEND == ib_wr->opcode) {
3132 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3133 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3135 wqe_misc = NES_IWARP_SQ_OP_SEND;
3137 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3138 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3140 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3142 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3143 ib_wr->ex.invalidate_rkey);
3146 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3151 if (ib_wr->send_flags & IB_SEND_FENCE)
3152 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3154 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3155 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3156 (ib_wr->sg_list[0].length <= 64)) {
3157 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3158 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3159 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3160 ib_wr->sg_list[0].length);
3161 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3163 fill_wqe_sg_send(wqe, ib_wr, 1);
3167 case IB_WR_RDMA_WRITE:
3168 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3169 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3170 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3171 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3176 if (ib_wr->send_flags & IB_SEND_FENCE)
3177 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3179 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3180 rdma_wr(ib_wr)->rkey);
3181 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3182 rdma_wr(ib_wr)->remote_addr);
3184 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3185 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3186 (ib_wr->sg_list[0].length <= 64)) {
3187 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3188 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3189 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3190 ib_wr->sg_list[0].length);
3191 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3193 fill_wqe_sg_send(wqe, ib_wr, 1);
3196 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3197 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3199 case IB_WR_RDMA_READ:
3200 case IB_WR_RDMA_READ_WITH_INV:
3201 /* iWARP only supports 1 sge for RDMA reads */
3202 if (ib_wr->num_sge > 1) {
3203 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3208 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3209 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3211 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3212 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3213 ib_wr->ex.invalidate_rkey);
3216 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3217 rdma_wr(ib_wr)->remote_addr);
3218 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3219 rdma_wr(ib_wr)->rkey);
3220 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3221 ib_wr->sg_list->length);
3222 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3223 ib_wr->sg_list->addr);
3224 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3225 ib_wr->sg_list->lkey);
3227 case IB_WR_LOCAL_INV:
3228 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3229 set_wqe_32bit_value(wqe->wqe_words,
3230 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3231 ib_wr->ex.invalidate_rkey);
3235 struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
3236 int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
3237 int flags = reg_wr(ib_wr)->access;
3239 if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3240 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3244 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3245 set_wqe_64bit_value(wqe->wqe_words,
3246 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3248 set_wqe_32bit_value(wqe->wqe_words,
3249 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3251 set_wqe_32bit_value(wqe->wqe_words,
3252 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3253 set_wqe_32bit_value(wqe->wqe_words,
3254 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3255 reg_wr(ib_wr)->key);
3257 if (page_shift == 12) {
3258 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3259 } else if (page_shift == 21) {
3260 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3262 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3263 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3268 /* Set access_flags */
3269 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3270 if (flags & IB_ACCESS_LOCAL_WRITE)
3271 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3273 if (flags & IB_ACCESS_REMOTE_WRITE)
3274 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3276 if (flags & IB_ACCESS_REMOTE_READ)
3277 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3279 if (flags & IB_ACCESS_MW_BIND)
3280 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3282 /* Fill in PBL info: */
3283 set_wqe_64bit_value(wqe->wqe_words,
3284 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3287 set_wqe_32bit_value(wqe->wqe_words,
3288 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3291 nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
3292 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3293 "page_list_len: %u, wqe_misc: %x\n",
3294 (unsigned long long) mr->ibmr.iova,
3297 (unsigned long long) mr->paddr,
3311 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3312 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3314 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3316 ib_wr = ib_wr->next;
3324 nesqp->hwqp.sq_head = head;
3327 counter = min(wqe_count, ((u32)255));
3328 wqe_count -= counter;
3329 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3330 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3333 spin_unlock_irqrestore(&nesqp->lock, flags);
3345 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3346 struct ib_recv_wr **bad_wr)
3349 unsigned long flags = 0;
3350 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3351 struct nes_device *nesdev = nesvnic->nesdev;
3352 struct nes_qp *nesqp = to_nesqp(ibqp);
3353 struct nes_hw_qp_wqe *wqe;
3356 u32 qsize = nesqp->hwqp.rq_size;
3360 u32 total_payload_length;
3362 if (nesqp->ibqp_state > IB_QPS_RTS) {
3367 spin_lock_irqsave(&nesqp->lock, flags);
3369 head = nesqp->hwqp.rq_head;
3372 /* Check for QP error */
3373 if (nesqp->term_flags) {
3378 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3382 /* Check for RQ overflow */
3383 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3388 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3389 wqe = &nesqp->hwqp.rq_vbase[head];
3391 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3392 nesqp->hwqp.qp_id, wqe, head); */
3393 nes_fill_init_qp_wqe(wqe, nesqp, head);
3394 u64temp = (u64)(ib_wr->wr_id);
3395 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3397 total_payload_length = 0;
3398 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3399 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3400 ib_wr->sg_list[sge_index].addr);
3401 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3402 ib_wr->sg_list[sge_index].length);
3403 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3404 ib_wr->sg_list[sge_index].lkey);
3406 total_payload_length += ib_wr->sg_list[sge_index].length;
3408 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3409 total_payload_length);
3411 ib_wr = ib_wr->next;
3418 nesqp->hwqp.rq_head = head;
3421 counter = min(wqe_count, ((u32)255));
3422 wqe_count -= counter;
3423 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3426 spin_unlock_irqrestore(&nesqp->lock, flags);
3435 * nes_drain_sq - drain sq
3436 * @ibqp: pointer to ibqp
3438 static void nes_drain_sq(struct ib_qp *ibqp)
3440 struct nes_qp *nesqp = to_nesqp(ibqp);
3442 if (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)
3443 wait_for_completion(&nesqp->sq_drained);
3447 * nes_drain_rq - drain rq
3448 * @ibqp: pointer to ibqp
3450 static void nes_drain_rq(struct ib_qp *ibqp)
3452 struct nes_qp *nesqp = to_nesqp(ibqp);
3454 if (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)
3455 wait_for_completion(&nesqp->rq_drained);
3461 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3465 unsigned long flags = 0;
3466 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3467 struct nes_device *nesdev = nesvnic->nesdev;
3468 struct nes_cq *nescq = to_nescq(ibcq);
3469 struct nes_qp *nesqp;
3470 struct nes_hw_cqe cqe;
3477 u32 move_cq_head = 1;
3480 nes_debug(NES_DBG_CQ, "\n");
3482 spin_lock_irqsave(&nescq->lock, flags);
3484 head = nescq->hw_cq.cq_head;
3485 cq_size = nescq->hw_cq.cq_size;
3487 while (cqe_count < num_entries) {
3488 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3489 NES_CQE_VALID) == 0)
3493 * Make sure we read CQ entry contents *after*
3494 * we've checked the valid bit.
3498 cqe = nescq->hw_cq.cq_vbase[head];
3499 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3500 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3501 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3502 /* parse CQE, get completion context from WQE (either rq or sq) */
3503 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3507 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3508 memset(entry, 0, sizeof *entry);
3509 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3510 entry->status = IB_WC_SUCCESS;
3512 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3513 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3514 entry->status = err_code & 0x0000ffff;
3516 /* The rest of the cqe's will be marked as flushed */
3517 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3518 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3519 NES_IWARP_CQE_MINOR_FLUSH);
3521 entry->status = IB_WC_WR_FLUSH_ERR;
3524 entry->qp = &nesqp->ibqp;
3525 entry->src_qp = nesqp->hwqp.qp_id;
3527 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3528 if (nesqp->skip_lsmm) {
3529 nesqp->skip_lsmm = 0;
3530 nesqp->hwqp.sq_tail++;
3533 /* Working on a SQ Completion*/
3534 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3535 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3536 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3537 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3538 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3539 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3541 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3542 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3543 case NES_IWARP_SQ_OP_RDMAW:
3544 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3545 entry->opcode = IB_WC_RDMA_WRITE;
3547 case NES_IWARP_SQ_OP_RDMAR:
3548 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3549 entry->opcode = IB_WC_RDMA_READ;
3550 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3551 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3553 case NES_IWARP_SQ_OP_SENDINV:
3554 case NES_IWARP_SQ_OP_SENDSEINV:
3555 case NES_IWARP_SQ_OP_SEND:
3556 case NES_IWARP_SQ_OP_SENDSE:
3557 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3558 entry->opcode = IB_WC_SEND;
3560 case NES_IWARP_SQ_OP_LOCINV:
3561 entry->opcode = IB_WC_LOCAL_INV;
3563 case NES_IWARP_SQ_OP_FAST_REG:
3564 entry->opcode = IB_WC_REG_MR;
3568 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3569 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3571 wq_tail = nesqp->hwqp.sq_tail;
3574 /* Working on a RQ Completion*/
3575 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3576 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3577 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3578 entry->opcode = IB_WC_RECV;
3580 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3581 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3583 wq_tail = nesqp->hwqp.rq_tail;
3587 if (nesqp->iwarp_state > NES_CQP_QP_IWARP_STATE_RTS) {
3588 if (nesqp->hwqp.sq_tail == nesqp->hwqp.sq_head)
3589 complete(&nesqp->sq_drained);
3590 if (nesqp->hwqp.rq_tail == nesqp->hwqp.rq_head)
3591 complete(&nesqp->rq_drained);
3594 entry->wr_id = wrid;
3600 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3601 if (++head >= cq_size)
3603 nescq->polled_completions++;
3605 if ((nescq->polled_completions > (cq_size / 2)) ||
3606 (nescq->polled_completions == 255)) {
3607 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3608 " are pending %u of %u.\n",
3609 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3610 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3611 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3612 nescq->polled_completions = 0;
3615 /* Update the wqe index and set status to flush */
3616 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3617 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3618 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3619 cpu_to_le32(wqe_index);
3620 move_cq_head = 1; /* ready for next pass */
3624 if (nescq->polled_completions) {
3625 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3626 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3627 nescq->polled_completions = 0;
3630 nescq->hw_cq.cq_head = head;
3631 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3632 cqe_count, nescq->hw_cq.cq_number);
3634 spin_unlock_irqrestore(&nescq->lock, flags);
3643 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3645 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3646 struct nes_device *nesdev = nesvnic->nesdev;
3647 struct nes_cq *nescq = to_nescq(ibcq);
3650 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3651 nescq->hw_cq.cq_number);
3653 cq_arm = nescq->hw_cq.cq_number;
3654 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3655 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3656 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3657 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3661 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3662 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3667 static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3668 struct ib_port_immutable *immutable)
3670 struct ib_port_attr attr;
3673 err = nes_query_port(ibdev, port_num, &attr);
3677 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3678 immutable->gid_tbl_len = attr.gid_tbl_len;
3679 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
3684 static void get_dev_fw_str(struct ib_device *dev, char *str,
3687 struct nes_ib_device *nesibdev =
3688 container_of(dev, struct nes_ib_device, ibdev);
3689 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3691 nes_debug(NES_DBG_INIT, "\n");
3692 snprintf(str, str_len, "%u.%u",
3693 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
3694 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
3698 * nes_init_ofa_device
3700 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3702 struct nes_ib_device *nesibdev;
3703 struct nes_vnic *nesvnic = netdev_priv(netdev);
3704 struct nes_device *nesdev = nesvnic->nesdev;
3706 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3707 if (nesibdev == NULL) {
3710 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3711 nesibdev->ibdev.owner = THIS_MODULE;
3713 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3714 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3715 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3717 nesibdev->ibdev.uverbs_cmd_mask =
3718 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3719 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3720 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3721 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3722 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3723 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3724 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3725 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3726 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3727 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3728 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3729 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3730 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3731 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3732 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3733 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3734 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3735 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3736 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3737 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3738 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3739 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3741 nesibdev->ibdev.phys_port_cnt = 1;
3742 nesibdev->ibdev.num_comp_vectors = 1;
3743 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3744 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3745 nesibdev->ibdev.query_device = nes_query_device;
3746 nesibdev->ibdev.query_port = nes_query_port;
3747 nesibdev->ibdev.query_pkey = nes_query_pkey;
3748 nesibdev->ibdev.query_gid = nes_query_gid;
3749 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3750 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3751 nesibdev->ibdev.mmap = nes_mmap;
3752 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3753 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3754 nesibdev->ibdev.create_ah = nes_create_ah;
3755 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3756 nesibdev->ibdev.create_qp = nes_create_qp;
3757 nesibdev->ibdev.modify_qp = nes_modify_qp;
3758 nesibdev->ibdev.query_qp = nes_query_qp;
3759 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3760 nesibdev->ibdev.create_cq = nes_create_cq;
3761 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3762 nesibdev->ibdev.poll_cq = nes_poll_cq;
3763 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3764 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3765 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3766 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3767 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3769 nesibdev->ibdev.alloc_mr = nes_alloc_mr;
3770 nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
3772 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3773 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3774 nesibdev->ibdev.process_mad = nes_process_mad;
3776 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3777 nesibdev->ibdev.post_send = nes_post_send;
3778 nesibdev->ibdev.post_recv = nes_post_recv;
3779 nesibdev->ibdev.drain_sq = nes_drain_sq;
3780 nesibdev->ibdev.drain_rq = nes_drain_rq;
3782 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3783 if (nesibdev->ibdev.iwcm == NULL) {
3784 ib_dealloc_device(&nesibdev->ibdev);
3787 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3788 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3789 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3790 nesibdev->ibdev.iwcm->connect = nes_connect;
3791 nesibdev->ibdev.iwcm->accept = nes_accept;
3792 nesibdev->ibdev.iwcm->reject = nes_reject;
3793 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3794 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3795 nesibdev->ibdev.get_port_immutable = nes_port_immutable;
3796 nesibdev->ibdev.get_dev_fw_str = get_dev_fw_str;
3797 memcpy(nesibdev->ibdev.iwcm->ifname, netdev->name,
3798 sizeof(nesibdev->ibdev.iwcm->ifname));
3805 * nes_handle_delayed_event
3807 static void nes_handle_delayed_event(unsigned long data)
3809 struct nes_vnic *nesvnic = (void *) data;
3811 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3812 struct ib_event event;
3814 event.device = &nesvnic->nesibdev->ibdev;
3817 event.event = nesvnic->delayed_event;
3818 event.element.port_num = nesvnic->logical_port + 1;
3819 ib_dispatch_event(&event);
3823 nesvnic->event_timer.function = NULL;
3827 void nes_port_ibevent(struct nes_vnic *nesvnic)
3829 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3830 struct nes_device *nesdev = nesvnic->nesdev;
3831 struct ib_event event;
3832 event.device = &nesibdev->ibdev;
3833 event.element.port_num = nesvnic->logical_port + 1;
3834 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3836 if (!nesvnic->event_timer.function) {
3837 ib_dispatch_event(&event);
3838 nesvnic->last_dispatched_event = event.event;
3839 nesvnic->event_timer.function = nes_handle_delayed_event;
3840 nesvnic->event_timer.data = (unsigned long) nesvnic;
3841 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3842 add_timer(&nesvnic->event_timer);
3844 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3846 nesvnic->delayed_event = event.event;
3851 * nes_destroy_ofa_device
3853 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3855 if (nesibdev == NULL)
3858 nes_unregister_ofa_device(nesibdev);
3860 kfree(nesibdev->ibdev.iwcm);
3861 ib_dealloc_device(&nesibdev->ibdev);
3866 * nes_register_ofa_device
3868 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3870 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3871 struct nes_device *nesdev = nesvnic->nesdev;
3872 struct nes_adapter *nesadapter = nesdev->nesadapter;
3875 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3880 /* Get the resources allocated to this device */
3881 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3882 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3883 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3884 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3886 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3887 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3891 device_remove_file(&nesibdev->ibdev.dev,
3892 nes_dev_attributes[i]);
3894 ib_unregister_device(&nesibdev->ibdev);
3899 nesvnic->of_device_registered = 1;
3906 * nes_unregister_ofa_device
3908 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3910 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3913 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3914 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3917 if (nesvnic->of_device_registered) {
3918 ib_unregister_device(&nesibdev->ibdev);
3921 nesvnic->of_device_registered = 0;