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)
776 return ERR_PTR(-ENOSYS);
783 static int nes_destroy_ah(struct ib_ah *ah)
790 * nes_get_encoded_size
792 static inline u8 nes_get_encoded_size(int *size)
798 } else if (*size <= 128) {
801 } else if (*size <= 512) {
805 return (encoded_size);
813 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
814 struct nes_vnic *nesvnic, int sq_size, int rq_size)
821 struct nes_device *nesdev = nesvnic->nesdev;
822 struct nes_adapter *nesadapter = nesdev->nesadapter;
827 pbl_entries = nespbl->pbl_size >> 3;
828 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
829 nespbl->pbl_size, pbl_entries,
830 (void *)nespbl->pbl_vbase,
831 (unsigned long) nespbl->pbl_pbase);
832 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
833 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
834 /* the first pbl to be fro the rq_vbase... */
835 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
836 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
837 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
839 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
844 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
845 nesqp->page = nespbl->page;
846 if (!nesqp->hwqp.sq_vbase) {
847 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
852 /* Now to get to sq.. we need to calculate how many */
853 /* PBL entries were used by the rq.. */
854 pbl += sq_pbl_entries;
855 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
856 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
857 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
859 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
860 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
861 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
862 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
863 if (!nesadapter->free_256pbl) {
864 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
866 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
871 nesadapter->free_256pbl--;
872 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
874 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
875 pblbuffer = nesqp->pbl_vbase;
876 if (!nesqp->pbl_vbase) {
877 /* memory allocated during nes_reg_user_mr() */
878 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
881 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
882 nesadapter->free_256pbl++;
883 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
887 memset(nesqp->pbl_vbase, 0, 256);
888 /* fill in the page address in the pbl buffer.. */
889 tpbl = pblbuffer + 16;
890 pbl = (__le64 *)nespbl->pbl_vbase;
891 while (sq_pbl_entries--)
894 while (rq_pbl_entries--)
897 /* done with memory allocated during nes_reg_user_mr() */
898 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
903 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
904 /* Round up to a multiple of a page */
905 nesqp->qp_mem_size += PAGE_SIZE - 1;
906 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
908 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
909 &nesqp->hwqp.q2_pbase);
912 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
913 nesqp->pbl_vbase = NULL;
914 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
915 nesadapter->free_256pbl++;
916 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
920 nesqp->sq_kmapped = 1;
921 nesqp->hwqp.q2_vbase = mem;
923 memset(nesqp->hwqp.q2_vbase, 0, 256);
924 nesqp->nesqp_context = mem;
925 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
926 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
935 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
936 int sq_size, int rq_size)
939 struct nes_device *nesdev = nesvnic->nesdev;
941 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
942 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
943 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
944 256; /* this is Q2 */
945 /* Round up to a multiple of a page */
946 nesqp->qp_mem_size += PAGE_SIZE - 1;
947 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
949 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
950 &nesqp->hwqp.sq_pbase);
953 nes_debug(NES_DBG_QP, "PCI consistent memory for "
954 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
955 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
957 memset(mem, 0, nesqp->qp_mem_size);
959 nesqp->hwqp.sq_vbase = mem;
960 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
962 nesqp->hwqp.rq_vbase = mem;
963 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
964 sizeof(struct nes_hw_qp_wqe) * sq_size;
965 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
967 nesqp->hwqp.q2_vbase = mem;
968 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
969 sizeof(struct nes_hw_qp_wqe) * rq_size;
971 memset(nesqp->hwqp.q2_vbase, 0, 256);
973 nesqp->nesqp_context = mem;
974 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
975 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
981 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
983 static void nes_free_qp_mem(struct nes_device *nesdev,
984 struct nes_qp *nesqp, int virt_wqs)
987 struct nes_adapter *nesadapter = nesdev->nesadapter;
989 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
990 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
992 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
993 nesadapter->free_256pbl++;
994 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
995 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
996 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
997 nesqp->pbl_vbase = NULL;
998 if (nesqp->sq_kmapped) {
999 nesqp->sq_kmapped = 0;
1000 kunmap(nesqp->page);
1009 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1010 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1014 struct nes_pd *nespd = to_nespd(ibpd);
1015 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1016 struct nes_device *nesdev = nesvnic->nesdev;
1017 struct nes_adapter *nesadapter = nesdev->nesadapter;
1018 struct nes_qp *nesqp;
1019 struct nes_cq *nescq;
1020 struct nes_ucontext *nes_ucontext;
1021 struct nes_hw_cqp_wqe *cqp_wqe;
1022 struct nes_cqp_request *cqp_request;
1023 struct nes_create_qp_req req;
1024 struct nes_create_qp_resp uresp;
1025 struct nes_pbl *nespbl = NULL;
1028 /* u32 counter = 0; */
1030 unsigned long flags;
1040 if (init_attr->create_flags)
1041 return ERR_PTR(-EINVAL);
1043 atomic_inc(&qps_created);
1044 switch (init_attr->qp_type) {
1046 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1047 init_attr->cap.max_inline_data = 0;
1049 init_attr->cap.max_inline_data = 64;
1051 sq_size = init_attr->cap.max_send_wr;
1052 rq_size = init_attr->cap.max_recv_wr;
1054 /* check if the encoded sizes are OK or not... */
1055 sq_encoded_size = nes_get_encoded_size(&sq_size);
1056 rq_encoded_size = nes_get_encoded_size(&rq_size);
1058 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1059 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1061 return ERR_PTR(-EINVAL);
1064 init_attr->cap.max_send_wr = sq_size -2;
1065 init_attr->cap.max_recv_wr = rq_size -1;
1066 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1068 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1069 nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
1071 return ERR_PTR(ret);
1074 /* Need 512 (actually now 1024) byte alignment on this structure */
1075 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1077 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1078 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
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 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1479 return ERR_PTR(-ENOMEM);
1482 nescq->hw_cq.cq_size = max(entries + 1, 5);
1483 nescq->hw_cq.cq_number = cq_num;
1484 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1488 nes_ucontext = to_nesucontext(context);
1489 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1490 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1492 return ERR_PTR(-EFAULT);
1494 nesvnic->mcrq_ucontext = nes_ucontext;
1495 nes_ucontext->mcrqf = req.mcrqf;
1496 if (nes_ucontext->mcrqf) {
1497 if (nes_ucontext->mcrqf & 0x80000000)
1498 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1499 else if (nes_ucontext->mcrqf & 0x40000000)
1500 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1502 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1503 nescq->mcrqf = nes_ucontext->mcrqf;
1504 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1506 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1507 (unsigned long)req.user_cq_buffer, entries);
1509 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1510 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1511 list_del(&nespbl->list);
1513 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1519 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1521 return ERR_PTR(-EFAULT);
1524 pbl_entries = nespbl->pbl_size >> 3;
1525 nescq->cq_mem_size = 0;
1527 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1528 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1529 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1531 /* allocate the physical buffer space */
1532 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1533 &nescq->hw_cq.cq_pbase);
1535 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1536 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1538 return ERR_PTR(-ENOMEM);
1541 nescq->hw_cq.cq_vbase = mem;
1542 nescq->hw_cq.cq_head = 0;
1543 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1544 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1545 (u32)nescq->hw_cq.cq_pbase);
1548 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1549 spin_lock_init(&nescq->lock);
1551 /* send CreateCQ request to CQP */
1552 cqp_request = nes_get_cqp_request(nesdev);
1553 if (cqp_request == NULL) {
1554 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1556 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1557 nescq->hw_cq.cq_pbase);
1559 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1560 nespbl->pbl_vbase, nespbl->pbl_pbase);
1564 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1566 return ERR_PTR(-ENOMEM);
1568 cqp_request->waiting = 1;
1569 cqp_wqe = &cqp_request->cqp_wqe;
1571 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1572 NES_CQP_CQ_CHK_OVERFLOW |
1573 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1575 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1577 if (pbl_entries != 1) {
1578 if (pbl_entries > 32) {
1580 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1581 if (nesadapter->free_4kpbl == 0) {
1582 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1583 nes_free_cqp_request(nesdev, cqp_request);
1585 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1586 nescq->hw_cq.cq_pbase);
1588 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1589 nespbl->pbl_vbase, nespbl->pbl_pbase);
1592 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1594 return ERR_PTR(-ENOMEM);
1596 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1597 nescq->virtual_cq = 2;
1598 nesadapter->free_4kpbl--;
1601 /* use 256 byte pbl */
1602 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1603 if (nesadapter->free_256pbl == 0) {
1604 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1605 nes_free_cqp_request(nesdev, cqp_request);
1607 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1608 nescq->hw_cq.cq_pbase);
1610 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1611 nespbl->pbl_vbase, nespbl->pbl_pbase);
1614 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1616 return ERR_PTR(-ENOMEM);
1618 opcode |= NES_CQP_CQ_VIRT;
1619 nescq->virtual_cq = 1;
1620 nesadapter->free_256pbl--;
1625 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1627 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1628 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1629 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1630 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1633 if (pbl_entries != 1)
1634 u64temp = (u64)nespbl->pbl_pbase;
1636 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1637 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1638 nes_ucontext->mmap_db_index[0]);
1640 u64temp = (u64)nescq->hw_cq.cq_pbase;
1641 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1643 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1644 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1645 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1646 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1647 cpu_to_le32((u32)(u64temp >> 1));
1648 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1649 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1651 atomic_set(&cqp_request->refcount, 2);
1652 nes_post_cqp_request(nesdev, cqp_request);
1655 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1656 nescq->hw_cq.cq_number);
1657 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1658 NES_EVENT_TIMEOUT * 2);
1659 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1660 nescq->hw_cq.cq_number, ret);
1661 if ((!ret) || (cqp_request->major_code)) {
1662 nes_put_cqp_request(nesdev, cqp_request);
1664 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1665 nescq->hw_cq.cq_pbase);
1667 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1668 nespbl->pbl_vbase, nespbl->pbl_pbase);
1671 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1673 return ERR_PTR(-EIO);
1675 nes_put_cqp_request(nesdev, cqp_request);
1678 /* free the nespbl */
1679 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1682 resp.cq_id = nescq->hw_cq.cq_number;
1683 resp.cq_size = nescq->hw_cq.cq_size;
1684 resp.mmap_db_index = 0;
1685 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
1686 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1688 return ERR_PTR(-EFAULT);
1692 return &nescq->ibcq;
1699 static int nes_destroy_cq(struct ib_cq *ib_cq)
1701 struct nes_cq *nescq;
1702 struct nes_device *nesdev;
1703 struct nes_vnic *nesvnic;
1704 struct nes_adapter *nesadapter;
1705 struct nes_hw_cqp_wqe *cqp_wqe;
1706 struct nes_cqp_request *cqp_request;
1707 unsigned long flags;
1714 nescq = to_nescq(ib_cq);
1715 nesvnic = to_nesvnic(ib_cq->device);
1716 nesdev = nesvnic->nesdev;
1717 nesadapter = nesdev->nesadapter;
1719 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1721 /* Send DestroyCQ request to CQP */
1722 cqp_request = nes_get_cqp_request(nesdev);
1723 if (cqp_request == NULL) {
1724 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1727 cqp_request->waiting = 1;
1728 cqp_wqe = &cqp_request->cqp_wqe;
1729 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1730 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1731 if (nescq->virtual_cq == 1) {
1732 nesadapter->free_256pbl++;
1733 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1734 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1735 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1737 } else if (nescq->virtual_cq == 2) {
1738 nesadapter->free_4kpbl++;
1739 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1740 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1741 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1743 opcode |= NES_CQP_CQ_4KB_CHUNK;
1746 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1748 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1749 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1750 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1751 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1753 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1755 atomic_set(&cqp_request->refcount, 2);
1756 nes_post_cqp_request(nesdev, cqp_request);
1759 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1760 nescq->hw_cq.cq_number);
1761 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1763 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1764 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1765 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1766 cqp_request->minor_code);
1768 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1769 nescq->hw_cq.cq_number);
1771 } else if (cqp_request->major_code) {
1772 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1773 nescq->hw_cq.cq_number);
1778 nes_put_cqp_request(nesdev, cqp_request);
1780 if (nescq->cq_mem_size)
1781 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1782 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1791 static u32 root_256(struct nes_device *nesdev,
1792 struct nes_root_vpbl *root_vpbl,
1793 struct nes_root_vpbl *new_root,
1799 if (pbl_count_4k == 1) {
1800 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1801 512, &new_root->pbl_pbase);
1803 if (new_root->pbl_vbase == NULL)
1806 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1807 for (i = 0; i < 16; i++) {
1808 new_root->pbl_vbase[i].pa_low =
1809 cpu_to_le32((u32)leaf_pbl);
1810 new_root->pbl_vbase[i].pa_high =
1811 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1815 for (i = 3; i >= 0; i--) {
1817 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1818 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1819 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1821 for (k = 1; k < 16; k++) {
1823 root_vpbl->pbl_vbase[j + k].pa_low =
1824 cpu_to_le32((u32)leaf_pbl);
1825 root_vpbl->pbl_vbase[j + k].pa_high =
1826 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1838 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1839 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1840 dma_addr_t single_buffer, u16 pbl_count_4k,
1841 u16 residual_page_count_4k, int acc, u64 *iova_start,
1842 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1844 struct nes_hw_cqp_wqe *cqp_wqe;
1845 struct nes_cqp_request *cqp_request;
1846 unsigned long flags;
1848 struct nes_adapter *nesadapter = nesdev->nesadapter;
1850 u16 pbl_count_256 = 0;
1852 u8 use_256_pbls = 0;
1854 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1855 struct nes_root_vpbl new_root = { 0, NULL, NULL };
1859 /* Register the region with the adapter */
1860 cqp_request = nes_get_cqp_request(nesdev);
1861 if (cqp_request == NULL) {
1862 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1865 cqp_request->waiting = 1;
1866 cqp_wqe = &cqp_request->cqp_wqe;
1869 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1871 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1872 pbl_count_256 = (pg_cnt + 31) / 32;
1874 if (pbl_count_256 <= nesadapter->free_256pbl)
1876 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1878 } else if (pg_cnt <= 2048) {
1879 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1880 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1882 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1885 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1889 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1894 pbl_count = pbl_count_256;
1895 nesadapter->free_256pbl -= pbl_count + use_two_level;
1896 } else if (use_4k_pbls) {
1897 pbl_count = pbl_count_4k;
1898 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1900 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1901 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1902 nes_free_cqp_request(nesdev, cqp_request);
1906 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1909 if (use_256_pbls && use_two_level) {
1910 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1911 if (new_root.pbl_pbase != 0)
1912 root_vpbl = &new_root;
1914 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1915 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1918 if (pbl_count_4k == 1)
1920 pbl_count = pbl_count_4k;
1922 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1923 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1926 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1928 if (use_4k_pbls == 0)
1933 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
1934 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
1935 if (acc & IB_ACCESS_LOCAL_WRITE)
1936 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
1937 if (acc & IB_ACCESS_REMOTE_WRITE)
1938 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
1939 if (acc & IB_ACCESS_REMOTE_READ)
1940 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
1941 if (acc & IB_ACCESS_MW_BIND)
1942 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
1944 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1945 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1946 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
1947 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
1949 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
1950 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
1951 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
1952 cpu_to_le32(nespd->pd_id & 0x00007fff);
1953 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
1955 if (pbl_count == 0) {
1956 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
1958 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
1959 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
1960 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
1963 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
1967 atomic_set(&cqp_request->refcount, 2);
1968 nes_post_cqp_request(nesdev, cqp_request);
1971 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1973 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
1974 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1975 stag, ret, cqp_request->major_code, cqp_request->minor_code);
1976 major_code = cqp_request->major_code;
1977 nes_put_cqp_request(nesdev, cqp_request);
1979 if ((!ret || major_code) && pbl_count != 0) {
1980 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1982 nesadapter->free_256pbl += pbl_count + use_two_level;
1983 else if (use_4k_pbls)
1984 nesadapter->free_4kpbl += pbl_count + use_two_level;
1985 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1987 if (new_root.pbl_pbase)
1988 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
1989 new_root.pbl_pbase);
1993 else if (major_code)
1996 *actual_pbl_cnt = pbl_count + use_two_level;
1997 *used_4k_pbls = use_4k_pbls;
2005 struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd, u64 addr, u64 size,
2006 int acc, u64 *iova_start)
2009 struct nes_pd *nespd = to_nespd(ib_pd);
2010 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2011 struct nes_device *nesdev = nesvnic->nesdev;
2012 struct nes_adapter *nesadapter = nesdev->nesadapter;
2013 struct nes_mr *nesmr;
2015 struct nes_vpbl vpbl;
2016 struct nes_root_vpbl root_vpbl;
2020 u32 next_stag_index = 0;
2029 vpbl.pbl_vbase = NULL;
2030 root_vpbl.pbl_vbase = NULL;
2031 root_vpbl.pbl_pbase = 0;
2033 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2034 stag_key = (u8)next_stag_index;
2038 next_stag_index >>= 8;
2039 next_stag_index %= nesadapter->max_mr;
2041 if ((addr ^ *iova_start) & ~PAGE_MASK)
2042 return ERR_PTR(-EINVAL);
2044 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2045 &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
2047 return ERR_PTR(err);
2050 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2052 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2053 return ERR_PTR(-ENOMEM);
2056 /* Allocate a 4K buffer for the PBL */
2057 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2059 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2060 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2061 if (!vpbl.pbl_vbase) {
2062 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2063 ibmr = ERR_PTR(-ENOMEM);
2071 if (mask & ~PAGE_MASK) {
2072 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2073 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2074 ibmr = ERR_PTR(-EINVAL);
2079 region_length += size;
2080 vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)addr & PAGE_MASK);
2081 vpbl.pbl_vbase[0].pa_high = cpu_to_le32((u32)((((u64)addr) >> 32)));
2083 stag = stag_index << 8;
2085 stag += (u32)stag_key;
2087 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2088 " length = 0x%016lX, index = 0x%08X\n",
2089 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2091 /* Make the leaf PBL the root if only one PBL */
2092 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2099 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2100 addr, pbl_count, 1, acc, iova_start,
2101 &nesmr->pbls_used, &nesmr->pbl_4k);
2104 nesmr->ibmr.rkey = stag;
2105 nesmr->ibmr.lkey = stag;
2106 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2107 ibmr = &nesmr->ibmr;
2110 ibmr = ERR_PTR(-ENOMEM);
2114 /* single PBL case */
2115 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2123 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2127 nes_debug(NES_DBG_MR, "\n");
2129 return nes_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva);
2135 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2136 u64 virt, int acc, struct ib_udata *udata)
2141 dma_addr_t last_dma_addr = 0;
2142 dma_addr_t first_dma_addr = 0;
2143 struct nes_pd *nespd = to_nespd(pd);
2144 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2145 struct nes_device *nesdev = nesvnic->nesdev;
2146 struct nes_adapter *nesadapter = nesdev->nesadapter;
2147 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2148 struct scatterlist *sg;
2149 struct nes_ucontext *nes_ucontext;
2150 struct nes_pbl *nespbl;
2151 struct nes_mr *nesmr;
2152 struct ib_umem *region;
2153 struct nes_mem_reg_req req;
2154 struct nes_vpbl vpbl;
2155 struct nes_root_vpbl root_vpbl;
2156 int entry, page_index;
2158 int err, pbl_depth = 0;
2163 u32 next_stag_index;
2165 u32 root_pbl_index = 0;
2166 u32 cur_pbl_index = 0;
2173 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2174 if (IS_ERR(region)) {
2175 return (struct ib_mr *)region;
2178 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2179 " offset = %u, page size = %u.\n",
2180 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2181 ib_umem_offset(region), region->page_size);
2183 skip_pages = ((u32)ib_umem_offset(region)) >> 12;
2185 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2186 ib_umem_release(region);
2187 return ERR_PTR(-EFAULT);
2189 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2191 switch (req.reg_type) {
2192 case IWNES_MEMREG_TYPE_MEM:
2195 vpbl.pbl_vbase = NULL;
2196 root_vpbl.pbl_vbase = NULL;
2197 root_vpbl.pbl_pbase = 0;
2199 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2200 stag_key = (u8)next_stag_index;
2202 driver_key = next_stag_index & 0x70000000;
2204 next_stag_index >>= 8;
2205 next_stag_index %= nesadapter->max_mr;
2207 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2208 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
2210 ib_umem_release(region);
2211 return ERR_PTR(err);
2214 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2216 ib_umem_release(region);
2217 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2218 return ERR_PTR(-ENOMEM);
2220 nesmr->region = region;
2222 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2223 if (sg_dma_address(sg) & ~PAGE_MASK) {
2224 ib_umem_release(region);
2225 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2226 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2227 (unsigned int) sg_dma_address(sg));
2228 ibmr = ERR_PTR(-EINVAL);
2230 goto reg_user_mr_err;
2233 if (!sg_dma_len(sg)) {
2234 ib_umem_release(region);
2235 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2237 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2238 ibmr = ERR_PTR(-EINVAL);
2240 goto reg_user_mr_err;
2243 region_length += sg_dma_len(sg);
2244 chunk_pages = sg_dma_len(sg) >> 12;
2245 region_length -= skip_pages << 12;
2246 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2248 if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
2250 if ((page_count&0x01FF) == 0) {
2251 if (page_count >= 1024 * 512) {
2252 ib_umem_release(region);
2253 nes_free_resource(nesadapter,
2254 nesadapter->allocated_mrs, stag_index);
2256 ibmr = ERR_PTR(-E2BIG);
2257 goto reg_user_mr_err;
2259 if (root_pbl_index == 1) {
2260 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2261 8192, &root_vpbl.pbl_pbase);
2262 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2263 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2264 if (!root_vpbl.pbl_vbase) {
2265 ib_umem_release(region);
2266 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2268 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2271 ibmr = ERR_PTR(-ENOMEM);
2272 goto reg_user_mr_err;
2274 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2276 if (!root_vpbl.leaf_vpbl) {
2277 ib_umem_release(region);
2278 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2279 root_vpbl.pbl_pbase);
2280 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2282 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2285 ibmr = ERR_PTR(-ENOMEM);
2286 goto reg_user_mr_err;
2288 root_vpbl.pbl_vbase[0].pa_low =
2289 cpu_to_le32((u32)vpbl.pbl_pbase);
2290 root_vpbl.pbl_vbase[0].pa_high =
2291 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2292 root_vpbl.leaf_vpbl[0] = vpbl;
2294 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2296 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2297 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2298 if (!vpbl.pbl_vbase) {
2299 ib_umem_release(region);
2300 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2301 ibmr = ERR_PTR(-ENOMEM);
2303 goto reg_user_mr_err;
2305 if (1 <= root_pbl_index) {
2306 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2307 cpu_to_le32((u32)vpbl.pbl_pbase);
2308 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2309 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2310 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2316 if (page_count != 0) {
2317 if ((last_dma_addr+4096) !=
2318 (sg_dma_address(sg)+
2321 last_dma_addr = sg_dma_address(sg)+
2324 first_dma_addr = sg_dma_address(sg)+
2326 last_dma_addr = first_dma_addr;
2330 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2331 cpu_to_le32((u32)(sg_dma_address(sg)+
2332 (page_index*4096)));
2333 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2334 cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2335 (page_index*4096))) >> 32)));
2342 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2343 " stag_key=0x%08x\n",
2344 stag_index, driver_key, stag_key);
2345 stag = stag_index << 8;
2347 stag += (u32)stag_key;
2350 /* Make the leaf PBL the root if only one PBL */
2351 if (root_pbl_index == 1) {
2352 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2358 pbl_count = root_pbl_index;
2361 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2362 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2363 stag, (unsigned int)iova_start,
2364 (unsigned int)region_length, stag_index,
2365 (unsigned long long)region->length, pbl_count);
2366 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2367 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2368 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2370 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2373 nesmr->ibmr.rkey = stag;
2374 nesmr->ibmr.lkey = stag;
2375 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2376 ibmr = &nesmr->ibmr;
2378 ib_umem_release(region);
2380 ibmr = ERR_PTR(-ENOMEM);
2384 /* free the resources */
2385 if (root_pbl_index == 1) {
2386 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2389 for (page_index=0; page_index<root_pbl_index; page_index++) {
2390 pci_free_consistent(nesdev->pcidev, 4096,
2391 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2392 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2394 kfree(root_vpbl.leaf_vpbl);
2395 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2396 root_vpbl.pbl_pbase);
2399 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2402 case IWNES_MEMREG_TYPE_QP:
2403 case IWNES_MEMREG_TYPE_CQ:
2404 if (!region->length) {
2405 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2406 ib_umem_release(region);
2407 return ERR_PTR(-EINVAL);
2409 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2411 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2412 ib_umem_release(region);
2413 return ERR_PTR(-ENOMEM);
2415 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2417 ib_umem_release(region);
2419 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2420 return ERR_PTR(-ENOMEM);
2422 nesmr->region = region;
2423 nes_ucontext = to_nesucontext(pd->uobject->context);
2424 pbl_depth = region->length >> 12;
2425 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2426 nespbl->pbl_size = pbl_depth*sizeof(u64);
2427 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2428 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2430 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2433 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2434 nespbl->pbl_size, pbl_depth);
2435 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2436 &nespbl->pbl_pbase);
2438 ib_umem_release(region);
2441 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2442 return ERR_PTR(-ENOMEM);
2445 nespbl->pbl_vbase = (u64 *)pbl;
2446 nespbl->user_base = start;
2447 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2448 " pbl_vbase=%p user_base=0x%lx\n",
2449 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2450 (void *) nespbl->pbl_vbase, nespbl->user_base);
2452 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2453 chunk_pages = sg_dma_len(sg) >> 12;
2454 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2456 nespbl->page = sg_page(sg);
2460 for (page_index = 0; page_index < chunk_pages; page_index++) {
2461 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2462 (sg_dma_address(sg)+
2463 (page_index*4096)));
2464 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2465 (sg_dma_address(sg)+
2466 (page_index*4096)))>>32);
2467 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2468 (unsigned long long)*pbl,
2469 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2474 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2475 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2477 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2479 nesmr->ibmr.rkey = -1;
2480 nesmr->ibmr.lkey = -1;
2481 nesmr->mode = req.reg_type;
2482 return &nesmr->ibmr;
2485 ib_umem_release(region);
2486 return ERR_PTR(-ENOSYS);
2493 static int nes_dereg_mr(struct ib_mr *ib_mr)
2495 struct nes_mr *nesmr = to_nesmr(ib_mr);
2496 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2497 struct nes_device *nesdev = nesvnic->nesdev;
2498 struct nes_adapter *nesadapter = nesdev->nesadapter;
2499 struct nes_hw_cqp_wqe *cqp_wqe;
2500 struct nes_cqp_request *cqp_request;
2501 unsigned long flags;
2508 pci_free_consistent(nesdev->pcidev,
2509 nesmr->max_pages * sizeof(u64),
2513 if (nesmr->region) {
2514 ib_umem_release(nesmr->region);
2516 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2521 /* Deallocate the region with the adapter */
2523 cqp_request = nes_get_cqp_request(nesdev);
2524 if (cqp_request == NULL) {
2525 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2528 cqp_request->waiting = 1;
2529 cqp_wqe = &cqp_request->cqp_wqe;
2531 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2532 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2533 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2534 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2535 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2537 atomic_set(&cqp_request->refcount, 2);
2538 nes_post_cqp_request(nesdev, cqp_request);
2541 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2542 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2544 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2545 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2546 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2548 major_code = cqp_request->major_code;
2549 minor_code = cqp_request->minor_code;
2551 nes_put_cqp_request(nesdev, cqp_request);
2554 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2555 " ib_mr=%p, rkey = 0x%08X\n",
2556 ib_mr, ib_mr->rkey);
2558 } else if (major_code) {
2559 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2560 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2561 major_code, minor_code, ib_mr, ib_mr->rkey);
2565 if (nesmr->pbls_used != 0) {
2566 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2567 if (nesmr->pbl_4k) {
2568 nesadapter->free_4kpbl += nesmr->pbls_used;
2569 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2570 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2571 "exceeded the max(%u)\n",
2572 nesadapter->free_4kpbl,
2573 nesadapter->max_4kpbl);
2575 nesadapter->free_256pbl += nesmr->pbls_used;
2576 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2577 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2578 "exceeded the max(%u)\n",
2579 nesadapter->free_256pbl,
2580 nesadapter->max_256pbl);
2582 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2584 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2585 (ib_mr->rkey & 0x0fffff00) >> 8);
2596 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2599 struct nes_ib_device *nesibdev =
2600 container_of(dev, struct nes_ib_device, ibdev.dev);
2601 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2603 nes_debug(NES_DBG_INIT, "\n");
2604 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2611 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2614 struct nes_ib_device *nesibdev =
2615 container_of(dev, struct nes_ib_device, ibdev.dev);
2616 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2618 nes_debug(NES_DBG_INIT, "\n");
2619 return sprintf(buf, "%u.%u\n",
2620 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2621 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2628 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2631 nes_debug(NES_DBG_INIT, "\n");
2632 return sprintf(buf, "NES020\n");
2639 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2642 nes_debug(NES_DBG_INIT, "\n");
2643 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2647 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2648 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2649 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2650 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2652 static struct device_attribute *nes_dev_attributes[] = {
2663 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2664 int attr_mask, struct ib_qp_init_attr *init_attr)
2666 struct nes_qp *nesqp = to_nesqp(ibqp);
2668 nes_debug(NES_DBG_QP, "\n");
2670 attr->qp_access_flags = 0;
2671 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2672 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2673 attr->cap.max_recv_sge = 1;
2674 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2675 attr->cap.max_inline_data = 0;
2677 attr->cap.max_inline_data = 64;
2679 init_attr->event_handler = nesqp->ibqp.event_handler;
2680 init_attr->qp_context = nesqp->ibqp.qp_context;
2681 init_attr->send_cq = nesqp->ibqp.send_cq;
2682 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2683 init_attr->srq = nesqp->ibqp.srq;
2684 init_attr->cap = attr->cap;
2693 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2694 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2696 struct nes_hw_cqp_wqe *cqp_wqe;
2697 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2698 /* struct iw_cm_event cm_event; */
2699 struct nes_cqp_request *cqp_request;
2703 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2704 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2706 cqp_request = nes_get_cqp_request(nesdev);
2707 if (cqp_request == NULL) {
2708 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2711 if (wait_completion) {
2712 cqp_request->waiting = 1;
2714 cqp_request->waiting = 0;
2716 cqp_wqe = &cqp_request->cqp_wqe;
2718 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2719 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2720 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2721 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2722 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2723 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2724 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2726 /* If sending a terminate message, fill in the length (in words) */
2727 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2728 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2729 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2730 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2733 atomic_set(&cqp_request->refcount, 2);
2734 nes_post_cqp_request(nesdev, cqp_request);
2737 if (wait_completion) {
2738 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2739 nesqp->hwqp.qp_id); */
2740 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2742 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2743 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2744 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2745 major_code = cqp_request->major_code;
2747 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2748 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2749 nesqp->hwqp.qp_id, cqp_request->major_code,
2750 cqp_request->minor_code, next_iwarp_state);
2753 nes_put_cqp_request(nesdev, cqp_request);
2757 else if (major_code)
2770 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2771 int attr_mask, struct ib_udata *udata)
2773 struct nes_qp *nesqp = to_nesqp(ibqp);
2774 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2775 struct nes_device *nesdev = nesvnic->nesdev;
2778 u32 next_iwarp_state = 0;
2780 unsigned long qplockflags;
2782 u16 original_last_aeq;
2783 u8 issue_modify_qp = 0;
2786 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2787 " iwarp_state=0x%X, refcount=%d\n",
2788 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2789 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2791 spin_lock_irqsave(&nesqp->lock, qplockflags);
2793 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2794 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2795 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2796 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2798 if (attr_mask & IB_QP_STATE) {
2799 switch (attr->qp_state) {
2801 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2803 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2804 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2807 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2808 issue_modify_qp = 1;
2811 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2813 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2814 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2817 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2818 issue_modify_qp = 1;
2821 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2823 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2824 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2827 if (nesqp->cm_id == NULL) {
2828 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2829 nesqp->hwqp.qp_id );
2830 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2833 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2834 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2835 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2836 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2837 issue_modify_qp = 1;
2838 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2839 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2840 nesqp->hte_added = 1;
2843 issue_modify_qp = 1;
2844 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2845 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2846 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2847 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2850 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2851 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2852 " ignored due to current iWARP state\n",
2854 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2857 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
2858 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2859 " already done based on hw state.\n",
2861 issue_modify_qp = 0;
2863 switch (nesqp->hw_iwarp_state) {
2864 case NES_AEQE_IWARP_STATE_CLOSING:
2865 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2867 case NES_AEQE_IWARP_STATE_TERMINATE:
2868 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2870 case NES_AEQE_IWARP_STATE_ERROR:
2871 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2874 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2875 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
2881 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
2883 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
2884 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2887 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2888 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2889 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
2890 issue_modify_qp = 1;
2894 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
2895 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2898 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
2900 if (nesqp->term_flags)
2901 del_timer(&nesqp->terminate_timer);
2903 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2904 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2905 if (nesqp->hte_added) {
2906 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
2907 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
2908 nesqp->hte_added = 0;
2910 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
2911 (nesdev->iw_status) &&
2912 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
2913 next_iwarp_state |= NES_CQP_QP_RESET;
2915 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
2916 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
2919 issue_modify_qp = 1;
2920 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
2923 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2928 nesqp->ibqp_state = attr->qp_state;
2929 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
2930 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
2931 nesqp->iwarp_state);
2934 if (attr_mask & IB_QP_ACCESS_FLAGS) {
2935 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
2936 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2937 NES_QPCONTEXT_MISC_RDMA_READ_EN);
2938 issue_modify_qp = 1;
2940 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
2941 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
2942 issue_modify_qp = 1;
2944 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
2945 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
2946 issue_modify_qp = 1;
2948 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
2949 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
2950 issue_modify_qp = 1;
2953 if (nesqp->user_mode) {
2954 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2955 NES_QPCONTEXT_MISC_RDMA_READ_EN);
2956 issue_modify_qp = 1;
2960 original_last_aeq = nesqp->last_aeq;
2961 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2963 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
2968 if (issue_modify_qp) {
2969 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
2970 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
2972 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
2973 " failed for QP%u.\n",
2974 next_iwarp_state, nesqp->hwqp.qp_id);
2978 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
2979 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
2980 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2981 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2982 original_last_aeq, nesqp->last_aeq);
2983 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
2985 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
2986 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
2987 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2988 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2989 original_last_aeq, nesqp->last_aeq);
2990 /* this one is for the cm_disconnect thread */
2991 spin_lock_irqsave(&nesqp->lock, qplockflags);
2992 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
2993 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
2994 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2995 nes_cm_disconn(nesqp);
2997 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
2998 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3001 spin_lock_irqsave(&nesqp->lock, qplockflags);
3003 /* These two are for the timer thread */
3004 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3005 nesqp->cm_id->add_ref(nesqp->cm_id);
3006 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3007 " need ae to finish up, original_last_aeq = 0x%04X."
3008 " last_aeq = 0x%04X, scheduling timer.\n",
3009 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3010 original_last_aeq, nesqp->last_aeq);
3011 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3013 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3015 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3016 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3017 " need ae to finish up, original_last_aeq = 0x%04X."
3018 " last_aeq = 0x%04X.\n",
3019 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3020 original_last_aeq, nesqp->last_aeq);
3024 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3025 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3026 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3027 original_last_aeq, nesqp->last_aeq);
3030 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3031 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3032 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3033 original_last_aeq, nesqp->last_aeq);
3038 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3039 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3046 * nes_muticast_attach
3048 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3050 nes_debug(NES_DBG_INIT, "\n");
3056 * nes_multicast_detach
3058 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3060 nes_debug(NES_DBG_INIT, "\n");
3068 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3069 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
3070 const struct ib_mad_hdr *in, size_t in_mad_size,
3071 struct ib_mad_hdr *out, size_t *out_mad_size,
3072 u16 *out_mad_pkey_index)
3074 nes_debug(NES_DBG_INIT, "\n");
3079 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3082 int total_payload_length = 0;
3083 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3084 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3085 ib_wr->sg_list[sge_index].addr);
3086 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3087 ib_wr->sg_list[sge_index].length);
3089 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3090 (ib_wr->sg_list[sge_index].lkey));
3092 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3094 total_payload_length += ib_wr->sg_list[sge_index].length;
3096 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3097 total_payload_length);
3098 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3099 total_payload_length);
3105 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3106 struct ib_send_wr **bad_wr)
3109 unsigned long flags = 0;
3110 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3111 struct nes_device *nesdev = nesvnic->nesdev;
3112 struct nes_qp *nesqp = to_nesqp(ibqp);
3113 struct nes_hw_qp_wqe *wqe;
3115 u32 qsize = nesqp->hwqp.sq_size;
3121 if (nesqp->ibqp_state > IB_QPS_RTS) {
3126 spin_lock_irqsave(&nesqp->lock, flags);
3128 head = nesqp->hwqp.sq_head;
3131 /* Check for QP error */
3132 if (nesqp->term_flags) {
3137 /* Check for SQ overflow */
3138 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3143 wqe = &nesqp->hwqp.sq_vbase[head];
3144 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3145 nesqp->hwqp.qp_id, wqe, head); */
3146 nes_fill_init_qp_wqe(wqe, nesqp, head);
3147 u64temp = (u64)(ib_wr->wr_id);
3148 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3150 switch (ib_wr->opcode) {
3152 case IB_WR_SEND_WITH_INV:
3153 if (IB_WR_SEND == ib_wr->opcode) {
3154 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3155 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3157 wqe_misc = NES_IWARP_SQ_OP_SEND;
3159 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3160 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3162 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3164 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3165 ib_wr->ex.invalidate_rkey);
3168 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3173 if (ib_wr->send_flags & IB_SEND_FENCE)
3174 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3176 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3177 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3178 (ib_wr->sg_list[0].length <= 64)) {
3179 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3180 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3181 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3182 ib_wr->sg_list[0].length);
3183 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3185 fill_wqe_sg_send(wqe, ib_wr, 1);
3189 case IB_WR_RDMA_WRITE:
3190 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3191 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3192 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3193 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3198 if (ib_wr->send_flags & IB_SEND_FENCE)
3199 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3201 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3202 rdma_wr(ib_wr)->rkey);
3203 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3204 rdma_wr(ib_wr)->remote_addr);
3206 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3207 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3208 (ib_wr->sg_list[0].length <= 64)) {
3209 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3210 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3211 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3212 ib_wr->sg_list[0].length);
3213 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3215 fill_wqe_sg_send(wqe, ib_wr, 1);
3218 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3219 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3221 case IB_WR_RDMA_READ:
3222 case IB_WR_RDMA_READ_WITH_INV:
3223 /* iWARP only supports 1 sge for RDMA reads */
3224 if (ib_wr->num_sge > 1) {
3225 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3230 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3231 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3233 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3234 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3235 ib_wr->ex.invalidate_rkey);
3238 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3239 rdma_wr(ib_wr)->remote_addr);
3240 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3241 rdma_wr(ib_wr)->rkey);
3242 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3243 ib_wr->sg_list->length);
3244 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3245 ib_wr->sg_list->addr);
3246 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3247 ib_wr->sg_list->lkey);
3249 case IB_WR_LOCAL_INV:
3250 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3251 set_wqe_32bit_value(wqe->wqe_words,
3252 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3253 ib_wr->ex.invalidate_rkey);
3257 struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
3258 int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
3259 int flags = reg_wr(ib_wr)->access;
3261 if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3262 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3266 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3267 set_wqe_64bit_value(wqe->wqe_words,
3268 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3270 set_wqe_32bit_value(wqe->wqe_words,
3271 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3273 set_wqe_32bit_value(wqe->wqe_words,
3274 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3275 set_wqe_32bit_value(wqe->wqe_words,
3276 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3277 reg_wr(ib_wr)->key);
3279 if (page_shift == 12) {
3280 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3281 } else if (page_shift == 21) {
3282 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3284 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3285 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3290 /* Set access_flags */
3291 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3292 if (flags & IB_ACCESS_LOCAL_WRITE)
3293 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3295 if (flags & IB_ACCESS_REMOTE_WRITE)
3296 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3298 if (flags & IB_ACCESS_REMOTE_READ)
3299 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3301 if (flags & IB_ACCESS_MW_BIND)
3302 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3304 /* Fill in PBL info: */
3305 set_wqe_64bit_value(wqe->wqe_words,
3306 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3309 set_wqe_32bit_value(wqe->wqe_words,
3310 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3313 nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
3314 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3315 "page_list_len: %u, wqe_misc: %x\n",
3316 (unsigned long long) mr->ibmr.iova,
3319 (unsigned long long) mr->paddr,
3333 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3334 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3336 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3338 ib_wr = ib_wr->next;
3346 nesqp->hwqp.sq_head = head;
3349 counter = min(wqe_count, ((u32)255));
3350 wqe_count -= counter;
3351 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3352 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3355 spin_unlock_irqrestore(&nesqp->lock, flags);
3367 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3368 struct ib_recv_wr **bad_wr)
3371 unsigned long flags = 0;
3372 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3373 struct nes_device *nesdev = nesvnic->nesdev;
3374 struct nes_qp *nesqp = to_nesqp(ibqp);
3375 struct nes_hw_qp_wqe *wqe;
3378 u32 qsize = nesqp->hwqp.rq_size;
3382 u32 total_payload_length;
3384 if (nesqp->ibqp_state > IB_QPS_RTS) {
3389 spin_lock_irqsave(&nesqp->lock, flags);
3391 head = nesqp->hwqp.rq_head;
3394 /* Check for QP error */
3395 if (nesqp->term_flags) {
3400 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3404 /* Check for RQ overflow */
3405 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3410 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3411 wqe = &nesqp->hwqp.rq_vbase[head];
3413 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3414 nesqp->hwqp.qp_id, wqe, head); */
3415 nes_fill_init_qp_wqe(wqe, nesqp, head);
3416 u64temp = (u64)(ib_wr->wr_id);
3417 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3419 total_payload_length = 0;
3420 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3421 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3422 ib_wr->sg_list[sge_index].addr);
3423 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3424 ib_wr->sg_list[sge_index].length);
3425 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3426 ib_wr->sg_list[sge_index].lkey);
3428 total_payload_length += ib_wr->sg_list[sge_index].length;
3430 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3431 total_payload_length);
3433 ib_wr = ib_wr->next;
3440 nesqp->hwqp.rq_head = head;
3443 counter = min(wqe_count, ((u32)255));
3444 wqe_count -= counter;
3445 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3448 spin_unlock_irqrestore(&nesqp->lock, flags);
3457 * nes_drain_sq - drain sq
3458 * @ibqp: pointer to ibqp
3460 static void nes_drain_sq(struct ib_qp *ibqp)
3462 struct nes_qp *nesqp = to_nesqp(ibqp);
3464 if (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)
3465 wait_for_completion(&nesqp->sq_drained);
3469 * nes_drain_rq - drain rq
3470 * @ibqp: pointer to ibqp
3472 static void nes_drain_rq(struct ib_qp *ibqp)
3474 struct nes_qp *nesqp = to_nesqp(ibqp);
3476 if (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)
3477 wait_for_completion(&nesqp->rq_drained);
3483 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3487 unsigned long flags = 0;
3488 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3489 struct nes_device *nesdev = nesvnic->nesdev;
3490 struct nes_cq *nescq = to_nescq(ibcq);
3491 struct nes_qp *nesqp;
3492 struct nes_hw_cqe cqe;
3499 u32 move_cq_head = 1;
3502 nes_debug(NES_DBG_CQ, "\n");
3504 spin_lock_irqsave(&nescq->lock, flags);
3506 head = nescq->hw_cq.cq_head;
3507 cq_size = nescq->hw_cq.cq_size;
3509 while (cqe_count < num_entries) {
3510 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3511 NES_CQE_VALID) == 0)
3515 * Make sure we read CQ entry contents *after*
3516 * we've checked the valid bit.
3520 cqe = nescq->hw_cq.cq_vbase[head];
3521 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3522 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3523 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3524 /* parse CQE, get completion context from WQE (either rq or sq) */
3525 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3529 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3530 memset(entry, 0, sizeof *entry);
3531 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3532 entry->status = IB_WC_SUCCESS;
3534 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3535 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3536 entry->status = err_code & 0x0000ffff;
3538 /* The rest of the cqe's will be marked as flushed */
3539 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3540 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3541 NES_IWARP_CQE_MINOR_FLUSH);
3543 entry->status = IB_WC_WR_FLUSH_ERR;
3546 entry->qp = &nesqp->ibqp;
3547 entry->src_qp = nesqp->hwqp.qp_id;
3549 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3550 if (nesqp->skip_lsmm) {
3551 nesqp->skip_lsmm = 0;
3552 nesqp->hwqp.sq_tail++;
3555 /* Working on a SQ Completion*/
3556 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3557 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3558 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3559 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3560 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3561 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3563 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3564 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3565 case NES_IWARP_SQ_OP_RDMAW:
3566 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3567 entry->opcode = IB_WC_RDMA_WRITE;
3569 case NES_IWARP_SQ_OP_RDMAR:
3570 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3571 entry->opcode = IB_WC_RDMA_READ;
3572 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3573 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3575 case NES_IWARP_SQ_OP_SENDINV:
3576 case NES_IWARP_SQ_OP_SENDSEINV:
3577 case NES_IWARP_SQ_OP_SEND:
3578 case NES_IWARP_SQ_OP_SENDSE:
3579 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3580 entry->opcode = IB_WC_SEND;
3582 case NES_IWARP_SQ_OP_LOCINV:
3583 entry->opcode = IB_WC_LOCAL_INV;
3585 case NES_IWARP_SQ_OP_FAST_REG:
3586 entry->opcode = IB_WC_REG_MR;
3590 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3591 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3593 wq_tail = nesqp->hwqp.sq_tail;
3596 /* Working on a RQ Completion*/
3597 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3598 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3599 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3600 entry->opcode = IB_WC_RECV;
3602 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3603 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3605 wq_tail = nesqp->hwqp.rq_tail;
3609 if (nesqp->iwarp_state > NES_CQP_QP_IWARP_STATE_RTS) {
3610 if (nesqp->hwqp.sq_tail == nesqp->hwqp.sq_head)
3611 complete(&nesqp->sq_drained);
3612 if (nesqp->hwqp.rq_tail == nesqp->hwqp.rq_head)
3613 complete(&nesqp->rq_drained);
3616 entry->wr_id = wrid;
3622 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3623 if (++head >= cq_size)
3625 nescq->polled_completions++;
3627 if ((nescq->polled_completions > (cq_size / 2)) ||
3628 (nescq->polled_completions == 255)) {
3629 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3630 " are pending %u of %u.\n",
3631 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3632 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3633 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3634 nescq->polled_completions = 0;
3637 /* Update the wqe index and set status to flush */
3638 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3639 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3640 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3641 cpu_to_le32(wqe_index);
3642 move_cq_head = 1; /* ready for next pass */
3646 if (nescq->polled_completions) {
3647 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3648 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3649 nescq->polled_completions = 0;
3652 nescq->hw_cq.cq_head = head;
3653 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3654 cqe_count, nescq->hw_cq.cq_number);
3656 spin_unlock_irqrestore(&nescq->lock, flags);
3665 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3667 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3668 struct nes_device *nesdev = nesvnic->nesdev;
3669 struct nes_cq *nescq = to_nescq(ibcq);
3672 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3673 nescq->hw_cq.cq_number);
3675 cq_arm = nescq->hw_cq.cq_number;
3676 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3677 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3678 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3679 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3683 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3684 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3689 static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3690 struct ib_port_immutable *immutable)
3692 struct ib_port_attr attr;
3695 err = nes_query_port(ibdev, port_num, &attr);
3699 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3700 immutable->gid_tbl_len = attr.gid_tbl_len;
3701 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
3707 * nes_init_ofa_device
3709 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3711 struct nes_ib_device *nesibdev;
3712 struct nes_vnic *nesvnic = netdev_priv(netdev);
3713 struct nes_device *nesdev = nesvnic->nesdev;
3715 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3716 if (nesibdev == NULL) {
3719 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3720 nesibdev->ibdev.owner = THIS_MODULE;
3722 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3723 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3724 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3726 nesibdev->ibdev.uverbs_cmd_mask =
3727 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3728 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3729 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3730 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3731 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3732 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3733 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3734 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3735 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3736 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3737 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3738 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3739 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3740 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3741 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3742 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3743 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3744 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3745 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3746 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3747 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3748 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3750 nesibdev->ibdev.phys_port_cnt = 1;
3751 nesibdev->ibdev.num_comp_vectors = 1;
3752 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3753 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3754 nesibdev->ibdev.query_device = nes_query_device;
3755 nesibdev->ibdev.query_port = nes_query_port;
3756 nesibdev->ibdev.query_pkey = nes_query_pkey;
3757 nesibdev->ibdev.query_gid = nes_query_gid;
3758 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3759 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3760 nesibdev->ibdev.mmap = nes_mmap;
3761 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3762 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3763 nesibdev->ibdev.create_ah = nes_create_ah;
3764 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3765 nesibdev->ibdev.create_qp = nes_create_qp;
3766 nesibdev->ibdev.modify_qp = nes_modify_qp;
3767 nesibdev->ibdev.query_qp = nes_query_qp;
3768 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3769 nesibdev->ibdev.create_cq = nes_create_cq;
3770 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3771 nesibdev->ibdev.poll_cq = nes_poll_cq;
3772 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3773 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3774 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3775 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3776 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3778 nesibdev->ibdev.alloc_mr = nes_alloc_mr;
3779 nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
3781 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3782 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3783 nesibdev->ibdev.process_mad = nes_process_mad;
3785 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3786 nesibdev->ibdev.post_send = nes_post_send;
3787 nesibdev->ibdev.post_recv = nes_post_recv;
3788 nesibdev->ibdev.drain_sq = nes_drain_sq;
3789 nesibdev->ibdev.drain_rq = nes_drain_rq;
3791 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3792 if (nesibdev->ibdev.iwcm == NULL) {
3793 ib_dealloc_device(&nesibdev->ibdev);
3796 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3797 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3798 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3799 nesibdev->ibdev.iwcm->connect = nes_connect;
3800 nesibdev->ibdev.iwcm->accept = nes_accept;
3801 nesibdev->ibdev.iwcm->reject = nes_reject;
3802 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3803 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3804 nesibdev->ibdev.get_port_immutable = nes_port_immutable;
3805 memcpy(nesibdev->ibdev.iwcm->ifname, netdev->name,
3806 sizeof(nesibdev->ibdev.iwcm->ifname));
3813 * nes_handle_delayed_event
3815 static void nes_handle_delayed_event(unsigned long data)
3817 struct nes_vnic *nesvnic = (void *) data;
3819 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3820 struct ib_event event;
3822 event.device = &nesvnic->nesibdev->ibdev;
3825 event.event = nesvnic->delayed_event;
3826 event.element.port_num = nesvnic->logical_port + 1;
3827 ib_dispatch_event(&event);
3831 nesvnic->event_timer.function = NULL;
3835 void nes_port_ibevent(struct nes_vnic *nesvnic)
3837 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3838 struct nes_device *nesdev = nesvnic->nesdev;
3839 struct ib_event event;
3840 event.device = &nesibdev->ibdev;
3841 event.element.port_num = nesvnic->logical_port + 1;
3842 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3844 if (!nesvnic->event_timer.function) {
3845 ib_dispatch_event(&event);
3846 nesvnic->last_dispatched_event = event.event;
3847 nesvnic->event_timer.function = nes_handle_delayed_event;
3848 nesvnic->event_timer.data = (unsigned long) nesvnic;
3849 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3850 add_timer(&nesvnic->event_timer);
3852 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3854 nesvnic->delayed_event = event.event;
3859 * nes_destroy_ofa_device
3861 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3863 if (nesibdev == NULL)
3866 nes_unregister_ofa_device(nesibdev);
3868 kfree(nesibdev->ibdev.iwcm);
3869 ib_dealloc_device(&nesibdev->ibdev);
3874 * nes_register_ofa_device
3876 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3878 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3879 struct nes_device *nesdev = nesvnic->nesdev;
3880 struct nes_adapter *nesadapter = nesdev->nesadapter;
3883 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3888 /* Get the resources allocated to this device */
3889 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3890 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3891 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3892 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3894 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3895 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3899 device_remove_file(&nesibdev->ibdev.dev,
3900 nes_dev_attributes[i]);
3902 ib_unregister_device(&nesibdev->ibdev);
3907 nesvnic->of_device_registered = 1;
3914 * nes_unregister_ofa_device
3916 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3918 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3921 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3922 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3925 if (nesvnic->of_device_registered) {
3926 ib_unregister_device(&nesibdev->ibdev);
3929 nesvnic->of_device_registered = 0;