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 /* props being zeroed by the caller, avoid zeroing it here */
480 props->max_mtu = IB_MTU_4096;
481 props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
487 if (netif_queue_stopped(netdev))
488 props->state = IB_PORT_DOWN;
489 else if (nesvnic->linkup)
490 props->state = IB_PORT_ACTIVE;
492 props->state = IB_PORT_DOWN;
493 props->phys_state = 0;
494 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
495 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
496 props->gid_tbl_len = 1;
497 props->pkey_tbl_len = 1;
498 props->qkey_viol_cntr = 0;
499 props->active_width = IB_WIDTH_4X;
500 props->active_speed = IB_SPEED_SDR;
501 props->max_msg_sz = 0x80000000;
509 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
519 static int nes_query_gid(struct ib_device *ibdev, u8 port,
520 int index, union ib_gid *gid)
522 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
524 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
525 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
532 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
533 * of all objects associated with a particular user-mode client.
535 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
536 struct ib_udata *udata)
538 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
539 struct nes_device *nesdev = nesvnic->nesdev;
540 struct nes_adapter *nesadapter = nesdev->nesadapter;
541 struct nes_alloc_ucontext_req req;
542 struct nes_alloc_ucontext_resp uresp;
543 struct nes_ucontext *nes_ucontext;
544 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
547 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
548 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
549 return ERR_PTR(-EINVAL);
552 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
553 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
554 req.userspace_ver, NES_ABI_USERSPACE_VER);
555 return ERR_PTR(-EINVAL);
559 memset(&uresp, 0, sizeof uresp);
561 uresp.max_qps = nesibdev->max_qp;
562 uresp.max_pds = nesibdev->max_pd;
563 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
564 uresp.virtwq = nesadapter->virtwq;
565 uresp.kernel_ver = NES_ABI_KERNEL_VER;
567 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
569 return ERR_PTR(-ENOMEM);
571 nes_ucontext->nesdev = nesdev;
572 nes_ucontext->mmap_wq_offset = uresp.max_pds;
573 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
574 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
578 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
580 return ERR_PTR(-EFAULT);
583 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
584 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
585 atomic_set(&nes_ucontext->usecnt, 1);
586 return &nes_ucontext->ibucontext;
591 * nes_dealloc_ucontext
593 static int nes_dealloc_ucontext(struct ib_ucontext *context)
595 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
596 /* struct nes_device *nesdev = nesvnic->nesdev; */
597 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
599 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
609 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
612 struct nes_vnic *nesvnic = to_nesvnic(context->device);
613 struct nes_device *nesdev = nesvnic->nesdev;
614 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
615 struct nes_ucontext *nes_ucontext;
616 struct nes_qp *nesqp;
618 nes_ucontext = to_nesucontext(context);
621 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
622 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
623 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
624 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
625 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
626 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
629 nesqp = nes_ucontext->mmap_nesqp[index];
631 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
634 if (remap_pfn_range(vma, vma->vm_start,
635 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
636 vma->vm_end - vma->vm_start,
637 vma->vm_page_prot)) {
638 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
641 vma->vm_private_data = nesqp;
644 index = vma->vm_pgoff;
645 if (!test_bit(index, nes_ucontext->allocated_doorbells))
648 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
649 if (io_remap_pfn_range(vma, vma->vm_start,
650 (nesdev->doorbell_start +
651 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
652 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
654 vma->vm_private_data = nes_ucontext;
665 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
666 struct ib_ucontext *context, struct ib_udata *udata)
668 struct nes_pd *nespd;
669 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
670 struct nes_device *nesdev = nesvnic->nesdev;
671 struct nes_adapter *nesadapter = nesdev->nesadapter;
672 struct nes_ucontext *nesucontext;
673 struct nes_alloc_pd_resp uresp;
677 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
678 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
679 netdev_refcnt_read(nesvnic->netdev));
681 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
682 nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
687 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
689 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
690 return ERR_PTR(-ENOMEM);
693 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
694 nespd, nesvnic->nesibdev->ibdev.name);
696 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
699 nesucontext = to_nesucontext(context);
700 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
701 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
702 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
703 nespd->mmap_db_index, nespd->pd_id);
704 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
705 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
706 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
708 return ERR_PTR(-ENOMEM);
711 uresp.pd_id = nespd->pd_id;
712 uresp.mmap_db_index = nespd->mmap_db_index;
713 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
714 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
716 return ERR_PTR(-EFAULT);
719 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
720 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
721 nesucontext->first_free_db = nespd->mmap_db_index + 1;
724 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
732 static int nes_dealloc_pd(struct ib_pd *ibpd)
734 struct nes_ucontext *nesucontext;
735 struct nes_pd *nespd = to_nespd(ibpd);
736 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
737 struct nes_device *nesdev = nesvnic->nesdev;
738 struct nes_adapter *nesadapter = nesdev->nesadapter;
740 if ((ibpd->uobject) && (ibpd->uobject->context)) {
741 nesucontext = to_nesucontext(ibpd->uobject->context);
742 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
743 nespd->mmap_db_index);
744 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
745 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
746 if (nesucontext->first_free_db > nespd->mmap_db_index) {
747 nesucontext->first_free_db = nespd->mmap_db_index;
751 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
752 nespd->pd_id, nespd);
753 nes_free_resource(nesadapter, nesadapter->allocated_pds,
754 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
764 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr,
765 struct ib_udata *udata)
767 return ERR_PTR(-ENOSYS);
774 static int nes_destroy_ah(struct ib_ah *ah)
781 * nes_get_encoded_size
783 static inline u8 nes_get_encoded_size(int *size)
789 } else if (*size <= 128) {
792 } else if (*size <= 512) {
796 return (encoded_size);
804 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
805 struct nes_vnic *nesvnic, int sq_size, int rq_size)
812 struct nes_device *nesdev = nesvnic->nesdev;
813 struct nes_adapter *nesadapter = nesdev->nesadapter;
818 pbl_entries = nespbl->pbl_size >> 3;
819 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
820 nespbl->pbl_size, pbl_entries,
821 (void *)nespbl->pbl_vbase,
822 (unsigned long) nespbl->pbl_pbase);
823 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
824 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
825 /* the first pbl to be fro the rq_vbase... */
826 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
827 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
828 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
830 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
835 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
836 nesqp->page = nespbl->page;
837 if (!nesqp->hwqp.sq_vbase) {
838 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
843 /* Now to get to sq.. we need to calculate how many */
844 /* PBL entries were used by the rq.. */
845 pbl += sq_pbl_entries;
846 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
847 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
848 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
850 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
851 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
852 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
853 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
854 if (!nesadapter->free_256pbl) {
855 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
857 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
862 nesadapter->free_256pbl--;
863 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
865 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
866 pblbuffer = nesqp->pbl_vbase;
867 if (!nesqp->pbl_vbase) {
868 /* memory allocated during nes_reg_user_mr() */
869 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
872 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
873 nesadapter->free_256pbl++;
874 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
878 memset(nesqp->pbl_vbase, 0, 256);
879 /* fill in the page address in the pbl buffer.. */
880 tpbl = pblbuffer + 16;
881 pbl = (__le64 *)nespbl->pbl_vbase;
882 while (sq_pbl_entries--)
885 while (rq_pbl_entries--)
888 /* done with memory allocated during nes_reg_user_mr() */
889 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
894 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
895 /* Round up to a multiple of a page */
896 nesqp->qp_mem_size += PAGE_SIZE - 1;
897 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
899 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
900 &nesqp->hwqp.q2_pbase);
903 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
904 nesqp->pbl_vbase = NULL;
905 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
906 nesadapter->free_256pbl++;
907 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
911 nesqp->sq_kmapped = 1;
912 nesqp->hwqp.q2_vbase = mem;
914 memset(nesqp->hwqp.q2_vbase, 0, 256);
915 nesqp->nesqp_context = mem;
916 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
917 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
926 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
927 int sq_size, int rq_size)
930 struct nes_device *nesdev = nesvnic->nesdev;
932 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
933 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
934 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
935 256; /* this is Q2 */
936 /* Round up to a multiple of a page */
937 nesqp->qp_mem_size += PAGE_SIZE - 1;
938 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
940 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
941 &nesqp->hwqp.sq_pbase);
944 nes_debug(NES_DBG_QP, "PCI consistent memory for "
945 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
946 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
948 memset(mem, 0, nesqp->qp_mem_size);
950 nesqp->hwqp.sq_vbase = mem;
951 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
953 nesqp->hwqp.rq_vbase = mem;
954 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
955 sizeof(struct nes_hw_qp_wqe) * sq_size;
956 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
958 nesqp->hwqp.q2_vbase = mem;
959 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
960 sizeof(struct nes_hw_qp_wqe) * rq_size;
962 memset(nesqp->hwqp.q2_vbase, 0, 256);
964 nesqp->nesqp_context = mem;
965 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
966 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
972 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
974 static void nes_free_qp_mem(struct nes_device *nesdev,
975 struct nes_qp *nesqp, int virt_wqs)
978 struct nes_adapter *nesadapter = nesdev->nesadapter;
980 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
981 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
983 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
984 nesadapter->free_256pbl++;
985 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
986 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
987 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
988 nesqp->pbl_vbase = NULL;
989 if (nesqp->sq_kmapped) {
990 nesqp->sq_kmapped = 0;
1000 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1001 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1005 struct nes_pd *nespd = to_nespd(ibpd);
1006 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1007 struct nes_device *nesdev = nesvnic->nesdev;
1008 struct nes_adapter *nesadapter = nesdev->nesadapter;
1009 struct nes_qp *nesqp;
1010 struct nes_cq *nescq;
1011 struct nes_ucontext *nes_ucontext;
1012 struct nes_hw_cqp_wqe *cqp_wqe;
1013 struct nes_cqp_request *cqp_request;
1014 struct nes_create_qp_req req;
1015 struct nes_create_qp_resp uresp;
1016 struct nes_pbl *nespbl = NULL;
1019 /* u32 counter = 0; */
1021 unsigned long flags;
1031 if (init_attr->create_flags)
1032 return ERR_PTR(-EINVAL);
1034 atomic_inc(&qps_created);
1035 switch (init_attr->qp_type) {
1037 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1038 init_attr->cap.max_inline_data = 0;
1040 init_attr->cap.max_inline_data = 64;
1042 sq_size = init_attr->cap.max_send_wr;
1043 rq_size = init_attr->cap.max_recv_wr;
1045 /* check if the encoded sizes are OK or not... */
1046 sq_encoded_size = nes_get_encoded_size(&sq_size);
1047 rq_encoded_size = nes_get_encoded_size(&rq_size);
1049 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1050 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1052 return ERR_PTR(-EINVAL);
1055 init_attr->cap.max_send_wr = sq_size -2;
1056 init_attr->cap.max_recv_wr = rq_size -1;
1057 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1059 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1060 nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
1062 return ERR_PTR(ret);
1065 /* Need 512 (actually now 1024) byte alignment on this structure */
1066 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1068 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1069 return ERR_PTR(-ENOMEM);
1071 u64nesqp = (unsigned long)mem;
1072 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1073 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1074 u64nesqp &= ~u64temp;
1075 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1076 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1077 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1078 nesqp->allocated_buffer = mem;
1081 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1082 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1083 kfree(nesqp->allocated_buffer);
1084 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1085 return ERR_PTR(-EFAULT);
1087 if (req.user_wqe_buffers) {
1090 if (req.user_qp_buffer)
1091 nesqp->nesuqp_addr = req.user_qp_buffer;
1092 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1093 nesqp->user_mode = 1;
1094 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1097 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1098 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1099 list_del(&nespbl->list);
1101 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1102 nespbl, nespbl->user_base);
1107 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1108 (long long unsigned int)req.user_wqe_buffers);
1109 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1110 kfree(nesqp->allocated_buffer);
1111 return ERR_PTR(-EFAULT);
1115 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1116 nesqp->mmap_sq_db_index =
1117 find_next_zero_bit(nes_ucontext->allocated_wqs,
1118 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1119 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1120 nespd->mmap_db_index); */
1121 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1122 nes_debug(NES_DBG_QP,
1123 "db index > max user regions, failing create QP\n");
1124 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1126 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1130 kfree(nesqp->allocated_buffer);
1131 return ERR_PTR(-ENOMEM);
1133 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1134 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1135 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1137 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1138 kfree(nesqp->allocated_buffer);
1139 return ERR_PTR(-EFAULT);
1142 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1143 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1145 nes_debug(NES_DBG_QP,
1146 "error geting qp mem code = %d\n", err);
1147 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1148 kfree(nesqp->allocated_buffer);
1149 return ERR_PTR(-ENOMEM);
1152 nesqp->hwqp.sq_size = sq_size;
1153 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1154 nesqp->hwqp.sq_head = 1;
1155 nesqp->hwqp.rq_size = rq_size;
1156 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1157 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1158 (void *)nesqp->nesqp_context_pbase);
1160 nesqp->hwqp.qp_id = qp_num;
1161 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1162 nesqp->nespd = nespd;
1164 nescq = to_nescq(init_attr->send_cq);
1165 nesqp->nesscq = nescq;
1166 nescq = to_nescq(init_attr->recv_cq);
1167 nesqp->nesrcq = nescq;
1169 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1170 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1171 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1172 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1173 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1174 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1176 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1177 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1179 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1180 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1181 u64temp = (u64)nesqp->hwqp.sq_pbase;
1182 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1183 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1187 u64temp = (u64)nesqp->hwqp.sq_pbase;
1188 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1189 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1190 u64temp = (u64)nesqp->hwqp.rq_pbase;
1191 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1192 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1194 u64temp = (u64)nesqp->pbl_pbase;
1195 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1196 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1199 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1200 nesvnic->next_qp_nic_index,
1201 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1202 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1203 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1204 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1205 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1206 nesvnic->next_qp_nic_index++;
1207 if ((nesvnic->next_qp_nic_index > 3) ||
1208 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1209 nesvnic->next_qp_nic_index = 0;
1211 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1213 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1214 u64temp = (u64)nesqp->hwqp.q2_pbase;
1215 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1216 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1217 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1218 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1219 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1220 NES_QPCONTEXT_ORDIRD_AAH |
1221 ((((u32)nesadapter->max_irrq_wr) <<
1222 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1223 if (disable_mpa_crc) {
1224 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1225 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1230 cqp_request = nes_get_cqp_request(nesdev);
1231 if (cqp_request == NULL) {
1232 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1233 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1234 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1235 kfree(nesqp->allocated_buffer);
1236 return ERR_PTR(-ENOMEM);
1238 cqp_request->waiting = 1;
1239 cqp_wqe = &cqp_request->cqp_wqe;
1242 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1243 NES_CQP_QP_IWARP_STATE_IDLE;
1245 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1246 NES_CQP_QP_IWARP_STATE_IDLE;
1248 opcode |= NES_CQP_QP_CQS_VALID;
1249 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1250 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1251 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1253 u64temp = (u64)nesqp->nesqp_context_pbase;
1254 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1256 atomic_set(&cqp_request->refcount, 2);
1257 nes_post_cqp_request(nesdev, cqp_request);
1260 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1262 ret = wait_event_timeout(cqp_request->waitq,
1263 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1264 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1265 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1266 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1267 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1268 cqp_request->major_code, cqp_request->minor_code);
1269 if ((!ret) || (cqp_request->major_code)) {
1270 nes_put_cqp_request(nesdev, cqp_request);
1271 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1272 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1273 kfree(nesqp->allocated_buffer);
1275 return ERR_PTR(-ETIME);
1277 return ERR_PTR(-EIO);
1281 nes_put_cqp_request(nesdev, cqp_request);
1283 if (ibpd->uobject) {
1284 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1285 uresp.mmap_rq_db_index = 0;
1286 uresp.actual_sq_size = sq_size;
1287 uresp.actual_rq_size = rq_size;
1288 uresp.qp_id = nesqp->hwqp.qp_id;
1289 uresp.nes_drv_opt = nes_drv_opt;
1290 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1291 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1292 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1293 kfree(nesqp->allocated_buffer);
1294 return ERR_PTR(-EFAULT);
1298 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1299 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1300 spin_lock_init(&nesqp->lock);
1301 nes_add_ref(&nesqp->ibqp);
1304 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1305 return ERR_PTR(-EINVAL);
1307 init_completion(&nesqp->sq_drained);
1308 init_completion(&nesqp->rq_drained);
1310 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1311 setup_timer(&nesqp->terminate_timer, nes_terminate_timeout,
1312 (unsigned long)nesqp);
1314 /* update the QP table */
1315 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1316 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1317 netdev_refcnt_read(nesvnic->netdev));
1319 return &nesqp->ibqp;
1325 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1331 unsigned long flags = 0;
1333 spin_lock_irqsave(&nescq->lock, flags);
1335 cq_head = nescq->hw_cq.cq_head;
1336 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1338 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1339 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1340 u64temp = (((u64)hi) << 32) | ((u64)lo);
1341 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1342 if (u64temp == (u64)(unsigned long)nesqp) {
1343 /* Zero the context value so cqe will be ignored */
1344 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1345 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1348 if (++cq_head >= nescq->hw_cq.cq_size)
1352 spin_unlock_irqrestore(&nescq->lock, flags);
1359 static int nes_destroy_qp(struct ib_qp *ibqp)
1361 struct nes_qp *nesqp = to_nesqp(ibqp);
1362 struct nes_ucontext *nes_ucontext;
1363 struct ib_qp_attr attr;
1364 struct iw_cm_id *cm_id;
1365 struct iw_cm_event cm_event;
1368 atomic_inc(&sw_qps_destroyed);
1369 nesqp->destroyed = 1;
1371 /* Blow away the connection if it exists. */
1372 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1373 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1374 attr.qp_state = IB_QPS_ERR;
1375 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1378 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1379 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1380 cm_id = nesqp->cm_id;
1381 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1382 cm_event.status = -ETIMEDOUT;
1383 cm_event.local_addr = cm_id->local_addr;
1384 cm_event.remote_addr = cm_id->remote_addr;
1385 cm_event.private_data = NULL;
1386 cm_event.private_data_len = 0;
1388 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1389 "QP%u. cm_id = %p, refcount = %u. \n",
1390 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1392 cm_id->rem_ref(cm_id);
1393 ret = cm_id->event_handler(cm_id, &cm_event);
1395 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1398 if (nesqp->user_mode) {
1399 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1400 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1401 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1402 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1403 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1404 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1407 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1408 nesqp->sq_kmapped = 0;
1409 kunmap(nesqp->page);
1412 /* Clean any pending completions from the cq(s) */
1414 nes_clean_cq(nesqp, nesqp->nesscq);
1416 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1417 nes_clean_cq(nesqp, nesqp->nesrcq);
1419 nes_rem_ref(&nesqp->ibqp);
1427 static struct ib_cq *nes_create_cq(struct ib_device *ibdev,
1428 const struct ib_cq_init_attr *attr,
1429 struct ib_ucontext *context,
1430 struct ib_udata *udata)
1432 int entries = attr->cqe;
1434 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1435 struct nes_device *nesdev = nesvnic->nesdev;
1436 struct nes_adapter *nesadapter = nesdev->nesadapter;
1437 struct nes_cq *nescq;
1438 struct nes_ucontext *nes_ucontext = NULL;
1439 struct nes_cqp_request *cqp_request;
1441 struct nes_hw_cqp_wqe *cqp_wqe;
1442 struct nes_pbl *nespbl = NULL;
1443 struct nes_create_cq_req req;
1444 struct nes_create_cq_resp resp;
1447 u32 pbl_entries = 1;
1449 unsigned long flags;
1453 return ERR_PTR(-EINVAL);
1455 if (entries > nesadapter->max_cqe)
1456 return ERR_PTR(-EINVAL);
1458 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1459 nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
1461 return ERR_PTR(err);
1464 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1466 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1467 return ERR_PTR(-ENOMEM);
1470 nescq->hw_cq.cq_size = max(entries + 1, 5);
1471 nescq->hw_cq.cq_number = cq_num;
1472 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1476 nes_ucontext = to_nesucontext(context);
1477 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1478 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1480 return ERR_PTR(-EFAULT);
1482 nesvnic->mcrq_ucontext = nes_ucontext;
1483 nes_ucontext->mcrqf = req.mcrqf;
1484 if (nes_ucontext->mcrqf) {
1485 if (nes_ucontext->mcrqf & 0x80000000)
1486 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1487 else if (nes_ucontext->mcrqf & 0x40000000)
1488 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1490 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1491 nescq->mcrqf = nes_ucontext->mcrqf;
1492 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1494 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1495 (unsigned long)req.user_cq_buffer, entries);
1497 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1498 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1499 list_del(&nespbl->list);
1501 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1507 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1509 return ERR_PTR(-EFAULT);
1512 pbl_entries = nespbl->pbl_size >> 3;
1513 nescq->cq_mem_size = 0;
1515 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1516 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1517 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1519 /* allocate the physical buffer space */
1520 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1521 &nescq->hw_cq.cq_pbase);
1523 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1524 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1526 return ERR_PTR(-ENOMEM);
1529 nescq->hw_cq.cq_vbase = mem;
1530 nescq->hw_cq.cq_head = 0;
1531 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1532 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1533 (u32)nescq->hw_cq.cq_pbase);
1536 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1537 spin_lock_init(&nescq->lock);
1539 /* send CreateCQ request to CQP */
1540 cqp_request = nes_get_cqp_request(nesdev);
1541 if (cqp_request == NULL) {
1542 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1544 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1545 nescq->hw_cq.cq_pbase);
1547 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1548 nespbl->pbl_vbase, nespbl->pbl_pbase);
1552 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1554 return ERR_PTR(-ENOMEM);
1556 cqp_request->waiting = 1;
1557 cqp_wqe = &cqp_request->cqp_wqe;
1559 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1560 NES_CQP_CQ_CHK_OVERFLOW |
1561 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1563 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1565 if (pbl_entries != 1) {
1566 if (pbl_entries > 32) {
1568 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1569 if (nesadapter->free_4kpbl == 0) {
1570 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1571 nes_free_cqp_request(nesdev, cqp_request);
1573 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1574 nescq->hw_cq.cq_pbase);
1576 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1577 nespbl->pbl_vbase, nespbl->pbl_pbase);
1580 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1582 return ERR_PTR(-ENOMEM);
1584 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1585 nescq->virtual_cq = 2;
1586 nesadapter->free_4kpbl--;
1589 /* use 256 byte pbl */
1590 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1591 if (nesadapter->free_256pbl == 0) {
1592 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1593 nes_free_cqp_request(nesdev, cqp_request);
1595 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1596 nescq->hw_cq.cq_pbase);
1598 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1599 nespbl->pbl_vbase, nespbl->pbl_pbase);
1602 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1604 return ERR_PTR(-ENOMEM);
1606 opcode |= NES_CQP_CQ_VIRT;
1607 nescq->virtual_cq = 1;
1608 nesadapter->free_256pbl--;
1613 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1615 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1616 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1617 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1618 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1621 if (pbl_entries != 1)
1622 u64temp = (u64)nespbl->pbl_pbase;
1624 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1625 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1626 nes_ucontext->mmap_db_index[0]);
1628 u64temp = (u64)nescq->hw_cq.cq_pbase;
1629 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1631 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1632 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1633 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1634 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1635 cpu_to_le32((u32)(u64temp >> 1));
1636 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1637 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1639 atomic_set(&cqp_request->refcount, 2);
1640 nes_post_cqp_request(nesdev, cqp_request);
1643 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1644 nescq->hw_cq.cq_number);
1645 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1646 NES_EVENT_TIMEOUT * 2);
1647 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1648 nescq->hw_cq.cq_number, ret);
1649 if ((!ret) || (cqp_request->major_code)) {
1650 nes_put_cqp_request(nesdev, cqp_request);
1652 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1653 nescq->hw_cq.cq_pbase);
1655 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1656 nespbl->pbl_vbase, nespbl->pbl_pbase);
1659 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1661 return ERR_PTR(-EIO);
1663 nes_put_cqp_request(nesdev, cqp_request);
1666 /* free the nespbl */
1667 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1670 resp.cq_id = nescq->hw_cq.cq_number;
1671 resp.cq_size = nescq->hw_cq.cq_size;
1672 resp.mmap_db_index = 0;
1673 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
1674 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1676 return ERR_PTR(-EFAULT);
1680 return &nescq->ibcq;
1687 static int nes_destroy_cq(struct ib_cq *ib_cq)
1689 struct nes_cq *nescq;
1690 struct nes_device *nesdev;
1691 struct nes_vnic *nesvnic;
1692 struct nes_adapter *nesadapter;
1693 struct nes_hw_cqp_wqe *cqp_wqe;
1694 struct nes_cqp_request *cqp_request;
1695 unsigned long flags;
1702 nescq = to_nescq(ib_cq);
1703 nesvnic = to_nesvnic(ib_cq->device);
1704 nesdev = nesvnic->nesdev;
1705 nesadapter = nesdev->nesadapter;
1707 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1709 /* Send DestroyCQ request to CQP */
1710 cqp_request = nes_get_cqp_request(nesdev);
1711 if (cqp_request == NULL) {
1712 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1715 cqp_request->waiting = 1;
1716 cqp_wqe = &cqp_request->cqp_wqe;
1717 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1718 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1719 if (nescq->virtual_cq == 1) {
1720 nesadapter->free_256pbl++;
1721 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1722 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1723 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1725 } else if (nescq->virtual_cq == 2) {
1726 nesadapter->free_4kpbl++;
1727 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1728 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1729 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1731 opcode |= NES_CQP_CQ_4KB_CHUNK;
1734 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1736 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1737 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1738 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1739 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1741 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1743 atomic_set(&cqp_request->refcount, 2);
1744 nes_post_cqp_request(nesdev, cqp_request);
1747 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1748 nescq->hw_cq.cq_number);
1749 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1751 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1752 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1753 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1754 cqp_request->minor_code);
1756 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1757 nescq->hw_cq.cq_number);
1759 } else if (cqp_request->major_code) {
1760 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1761 nescq->hw_cq.cq_number);
1766 nes_put_cqp_request(nesdev, cqp_request);
1768 if (nescq->cq_mem_size)
1769 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1770 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1779 static u32 root_256(struct nes_device *nesdev,
1780 struct nes_root_vpbl *root_vpbl,
1781 struct nes_root_vpbl *new_root,
1787 if (pbl_count_4k == 1) {
1788 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1789 512, &new_root->pbl_pbase);
1791 if (new_root->pbl_vbase == NULL)
1794 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1795 for (i = 0; i < 16; i++) {
1796 new_root->pbl_vbase[i].pa_low =
1797 cpu_to_le32((u32)leaf_pbl);
1798 new_root->pbl_vbase[i].pa_high =
1799 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1803 for (i = 3; i >= 0; i--) {
1805 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1806 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1807 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1809 for (k = 1; k < 16; k++) {
1811 root_vpbl->pbl_vbase[j + k].pa_low =
1812 cpu_to_le32((u32)leaf_pbl);
1813 root_vpbl->pbl_vbase[j + k].pa_high =
1814 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1826 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1827 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1828 dma_addr_t single_buffer, u16 pbl_count_4k,
1829 u16 residual_page_count_4k, int acc, u64 *iova_start,
1830 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1832 struct nes_hw_cqp_wqe *cqp_wqe;
1833 struct nes_cqp_request *cqp_request;
1834 unsigned long flags;
1836 struct nes_adapter *nesadapter = nesdev->nesadapter;
1838 u16 pbl_count_256 = 0;
1840 u8 use_256_pbls = 0;
1842 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1843 struct nes_root_vpbl new_root = { 0, NULL, NULL };
1847 /* Register the region with the adapter */
1848 cqp_request = nes_get_cqp_request(nesdev);
1849 if (cqp_request == NULL) {
1850 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1853 cqp_request->waiting = 1;
1854 cqp_wqe = &cqp_request->cqp_wqe;
1857 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1859 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1860 pbl_count_256 = (pg_cnt + 31) / 32;
1862 if (pbl_count_256 <= nesadapter->free_256pbl)
1864 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1866 } else if (pg_cnt <= 2048) {
1867 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1868 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1870 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1873 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1877 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1882 pbl_count = pbl_count_256;
1883 nesadapter->free_256pbl -= pbl_count + use_two_level;
1884 } else if (use_4k_pbls) {
1885 pbl_count = pbl_count_4k;
1886 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1888 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1889 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1890 nes_free_cqp_request(nesdev, cqp_request);
1894 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1897 if (use_256_pbls && use_two_level) {
1898 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
1899 if (new_root.pbl_pbase != 0)
1900 root_vpbl = &new_root;
1902 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1903 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1906 if (pbl_count_4k == 1)
1908 pbl_count = pbl_count_4k;
1910 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1911 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1914 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1916 if (use_4k_pbls == 0)
1921 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
1922 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
1923 if (acc & IB_ACCESS_LOCAL_WRITE)
1924 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
1925 if (acc & IB_ACCESS_REMOTE_WRITE)
1926 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
1927 if (acc & IB_ACCESS_REMOTE_READ)
1928 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
1929 if (acc & IB_ACCESS_MW_BIND)
1930 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
1932 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1933 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1934 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
1935 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
1937 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
1938 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
1939 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
1940 cpu_to_le32(nespd->pd_id & 0x00007fff);
1941 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
1943 if (pbl_count == 0) {
1944 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
1946 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
1947 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
1948 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
1951 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
1955 atomic_set(&cqp_request->refcount, 2);
1956 nes_post_cqp_request(nesdev, cqp_request);
1959 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1961 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
1962 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1963 stag, ret, cqp_request->major_code, cqp_request->minor_code);
1964 major_code = cqp_request->major_code;
1965 nes_put_cqp_request(nesdev, cqp_request);
1967 if ((!ret || major_code) && pbl_count != 0) {
1968 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1970 nesadapter->free_256pbl += pbl_count + use_two_level;
1971 else if (use_4k_pbls)
1972 nesadapter->free_4kpbl += pbl_count + use_two_level;
1973 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1975 if (new_root.pbl_pbase)
1976 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
1977 new_root.pbl_pbase);
1981 else if (major_code)
1984 *actual_pbl_cnt = pbl_count + use_two_level;
1985 *used_4k_pbls = use_4k_pbls;
1993 struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd, u64 addr, u64 size,
1994 int acc, u64 *iova_start)
1997 struct nes_pd *nespd = to_nespd(ib_pd);
1998 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
1999 struct nes_device *nesdev = nesvnic->nesdev;
2000 struct nes_adapter *nesadapter = nesdev->nesadapter;
2001 struct nes_mr *nesmr;
2003 struct nes_vpbl vpbl;
2004 struct nes_root_vpbl root_vpbl;
2008 u32 next_stag_index = 0;
2017 vpbl.pbl_vbase = NULL;
2018 root_vpbl.pbl_vbase = NULL;
2019 root_vpbl.pbl_pbase = 0;
2021 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2022 stag_key = (u8)next_stag_index;
2026 next_stag_index >>= 8;
2027 next_stag_index %= nesadapter->max_mr;
2029 if ((addr ^ *iova_start) & ~PAGE_MASK)
2030 return ERR_PTR(-EINVAL);
2032 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2033 &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
2035 return ERR_PTR(err);
2038 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2040 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2041 return ERR_PTR(-ENOMEM);
2044 /* Allocate a 4K buffer for the PBL */
2045 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2047 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2048 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2049 if (!vpbl.pbl_vbase) {
2050 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2051 ibmr = ERR_PTR(-ENOMEM);
2059 if (mask & ~PAGE_MASK) {
2060 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2061 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2062 ibmr = ERR_PTR(-EINVAL);
2067 region_length += size;
2068 vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)addr & PAGE_MASK);
2069 vpbl.pbl_vbase[0].pa_high = cpu_to_le32((u32)((((u64)addr) >> 32)));
2071 stag = stag_index << 8;
2073 stag += (u32)stag_key;
2075 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2076 " length = 0x%016lX, index = 0x%08X\n",
2077 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2079 /* Make the leaf PBL the root if only one PBL */
2080 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2087 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2088 addr, pbl_count, 1, acc, iova_start,
2089 &nesmr->pbls_used, &nesmr->pbl_4k);
2092 nesmr->ibmr.rkey = stag;
2093 nesmr->ibmr.lkey = stag;
2094 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2095 ibmr = &nesmr->ibmr;
2098 ibmr = ERR_PTR(-ENOMEM);
2102 /* single PBL case */
2103 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2111 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2115 nes_debug(NES_DBG_MR, "\n");
2117 return nes_reg_phys_mr(pd, 0, 0xffffffffffULL, acc, &kva);
2123 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2124 u64 virt, int acc, struct ib_udata *udata)
2129 dma_addr_t last_dma_addr = 0;
2130 dma_addr_t first_dma_addr = 0;
2131 struct nes_pd *nespd = to_nespd(pd);
2132 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2133 struct nes_device *nesdev = nesvnic->nesdev;
2134 struct nes_adapter *nesadapter = nesdev->nesadapter;
2135 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2136 struct scatterlist *sg;
2137 struct nes_ucontext *nes_ucontext;
2138 struct nes_pbl *nespbl;
2139 struct nes_mr *nesmr;
2140 struct ib_umem *region;
2141 struct nes_mem_reg_req req;
2142 struct nes_vpbl vpbl;
2143 struct nes_root_vpbl root_vpbl;
2144 int entry, page_index;
2146 int err, pbl_depth = 0;
2151 u32 next_stag_index;
2153 u32 root_pbl_index = 0;
2154 u32 cur_pbl_index = 0;
2161 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2162 if (IS_ERR(region)) {
2163 return (struct ib_mr *)region;
2166 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2167 " offset = %u, page size = %lu.\n",
2168 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2169 ib_umem_offset(region), BIT(region->page_shift));
2171 skip_pages = ((u32)ib_umem_offset(region)) >> 12;
2173 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2174 ib_umem_release(region);
2175 return ERR_PTR(-EFAULT);
2177 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2179 switch (req.reg_type) {
2180 case IWNES_MEMREG_TYPE_MEM:
2183 vpbl.pbl_vbase = NULL;
2184 root_vpbl.pbl_vbase = NULL;
2185 root_vpbl.pbl_pbase = 0;
2187 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2188 stag_key = (u8)next_stag_index;
2190 driver_key = next_stag_index & 0x70000000;
2192 next_stag_index >>= 8;
2193 next_stag_index %= nesadapter->max_mr;
2195 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2196 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
2198 ib_umem_release(region);
2199 return ERR_PTR(err);
2202 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2204 ib_umem_release(region);
2205 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2206 return ERR_PTR(-ENOMEM);
2208 nesmr->region = region;
2210 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2211 if (sg_dma_address(sg) & ~PAGE_MASK) {
2212 ib_umem_release(region);
2213 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2214 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2215 (unsigned int) sg_dma_address(sg));
2216 ibmr = ERR_PTR(-EINVAL);
2218 goto reg_user_mr_err;
2221 if (!sg_dma_len(sg)) {
2222 ib_umem_release(region);
2223 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2225 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2226 ibmr = ERR_PTR(-EINVAL);
2228 goto reg_user_mr_err;
2231 region_length += sg_dma_len(sg);
2232 chunk_pages = sg_dma_len(sg) >> 12;
2233 region_length -= skip_pages << 12;
2234 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2236 if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
2238 if ((page_count&0x01FF) == 0) {
2239 if (page_count >= 1024 * 512) {
2240 ib_umem_release(region);
2241 nes_free_resource(nesadapter,
2242 nesadapter->allocated_mrs, stag_index);
2244 ibmr = ERR_PTR(-E2BIG);
2245 goto reg_user_mr_err;
2247 if (root_pbl_index == 1) {
2248 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2249 8192, &root_vpbl.pbl_pbase);
2250 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2251 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2252 if (!root_vpbl.pbl_vbase) {
2253 ib_umem_release(region);
2254 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2256 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2259 ibmr = ERR_PTR(-ENOMEM);
2260 goto reg_user_mr_err;
2262 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2264 if (!root_vpbl.leaf_vpbl) {
2265 ib_umem_release(region);
2266 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2267 root_vpbl.pbl_pbase);
2268 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2270 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2273 ibmr = ERR_PTR(-ENOMEM);
2274 goto reg_user_mr_err;
2276 root_vpbl.pbl_vbase[0].pa_low =
2277 cpu_to_le32((u32)vpbl.pbl_pbase);
2278 root_vpbl.pbl_vbase[0].pa_high =
2279 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2280 root_vpbl.leaf_vpbl[0] = vpbl;
2282 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2284 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2285 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2286 if (!vpbl.pbl_vbase) {
2287 ib_umem_release(region);
2288 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2289 ibmr = ERR_PTR(-ENOMEM);
2291 goto reg_user_mr_err;
2293 if (1 <= root_pbl_index) {
2294 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2295 cpu_to_le32((u32)vpbl.pbl_pbase);
2296 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2297 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2298 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2304 if (page_count != 0) {
2305 if ((last_dma_addr+4096) !=
2306 (sg_dma_address(sg)+
2309 last_dma_addr = sg_dma_address(sg)+
2312 first_dma_addr = sg_dma_address(sg)+
2314 last_dma_addr = first_dma_addr;
2318 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2319 cpu_to_le32((u32)(sg_dma_address(sg)+
2320 (page_index*4096)));
2321 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2322 cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2323 (page_index*4096))) >> 32)));
2330 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2331 " stag_key=0x%08x\n",
2332 stag_index, driver_key, stag_key);
2333 stag = stag_index << 8;
2335 stag += (u32)stag_key;
2338 /* Make the leaf PBL the root if only one PBL */
2339 if (root_pbl_index == 1) {
2340 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2346 pbl_count = root_pbl_index;
2349 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2350 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2351 stag, (unsigned int)iova_start,
2352 (unsigned int)region_length, stag_index,
2353 (unsigned long long)region->length, pbl_count);
2354 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2355 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2356 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2358 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2361 nesmr->ibmr.rkey = stag;
2362 nesmr->ibmr.lkey = stag;
2363 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2364 ibmr = &nesmr->ibmr;
2366 ib_umem_release(region);
2368 ibmr = ERR_PTR(-ENOMEM);
2372 /* free the resources */
2373 if (root_pbl_index == 1) {
2374 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2377 for (page_index=0; page_index<root_pbl_index; page_index++) {
2378 pci_free_consistent(nesdev->pcidev, 4096,
2379 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2380 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2382 kfree(root_vpbl.leaf_vpbl);
2383 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2384 root_vpbl.pbl_pbase);
2387 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2390 case IWNES_MEMREG_TYPE_QP:
2391 case IWNES_MEMREG_TYPE_CQ:
2392 if (!region->length) {
2393 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2394 ib_umem_release(region);
2395 return ERR_PTR(-EINVAL);
2397 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2399 ib_umem_release(region);
2400 return ERR_PTR(-ENOMEM);
2402 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2404 ib_umem_release(region);
2406 return ERR_PTR(-ENOMEM);
2408 nesmr->region = region;
2409 nes_ucontext = to_nesucontext(pd->uobject->context);
2410 pbl_depth = region->length >> 12;
2411 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2412 nespbl->pbl_size = pbl_depth*sizeof(u64);
2413 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2414 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2416 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2419 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2420 nespbl->pbl_size, pbl_depth);
2421 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2422 &nespbl->pbl_pbase);
2424 ib_umem_release(region);
2427 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2428 return ERR_PTR(-ENOMEM);
2431 nespbl->pbl_vbase = (u64 *)pbl;
2432 nespbl->user_base = start;
2433 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2434 " pbl_vbase=%p user_base=0x%lx\n",
2435 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2436 (void *) nespbl->pbl_vbase, nespbl->user_base);
2438 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2439 chunk_pages = sg_dma_len(sg) >> 12;
2440 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2442 nespbl->page = sg_page(sg);
2446 for (page_index = 0; page_index < chunk_pages; page_index++) {
2447 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2448 (sg_dma_address(sg)+
2449 (page_index*4096)));
2450 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2451 (sg_dma_address(sg)+
2452 (page_index*4096)))>>32);
2453 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2454 (unsigned long long)*pbl,
2455 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2460 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2461 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2463 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2465 nesmr->ibmr.rkey = -1;
2466 nesmr->ibmr.lkey = -1;
2467 nesmr->mode = req.reg_type;
2468 return &nesmr->ibmr;
2471 ib_umem_release(region);
2472 return ERR_PTR(-ENOSYS);
2479 static int nes_dereg_mr(struct ib_mr *ib_mr)
2481 struct nes_mr *nesmr = to_nesmr(ib_mr);
2482 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2483 struct nes_device *nesdev = nesvnic->nesdev;
2484 struct nes_adapter *nesadapter = nesdev->nesadapter;
2485 struct nes_hw_cqp_wqe *cqp_wqe;
2486 struct nes_cqp_request *cqp_request;
2487 unsigned long flags;
2494 pci_free_consistent(nesdev->pcidev,
2495 nesmr->max_pages * sizeof(u64),
2499 if (nesmr->region) {
2500 ib_umem_release(nesmr->region);
2502 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2507 /* Deallocate the region with the adapter */
2509 cqp_request = nes_get_cqp_request(nesdev);
2510 if (cqp_request == NULL) {
2511 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2514 cqp_request->waiting = 1;
2515 cqp_wqe = &cqp_request->cqp_wqe;
2517 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2518 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2519 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2520 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2521 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2523 atomic_set(&cqp_request->refcount, 2);
2524 nes_post_cqp_request(nesdev, cqp_request);
2527 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2528 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2530 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2531 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2532 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2534 major_code = cqp_request->major_code;
2535 minor_code = cqp_request->minor_code;
2537 nes_put_cqp_request(nesdev, cqp_request);
2540 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2541 " ib_mr=%p, rkey = 0x%08X\n",
2542 ib_mr, ib_mr->rkey);
2544 } else if (major_code) {
2545 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2546 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2547 major_code, minor_code, ib_mr, ib_mr->rkey);
2551 if (nesmr->pbls_used != 0) {
2552 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2553 if (nesmr->pbl_4k) {
2554 nesadapter->free_4kpbl += nesmr->pbls_used;
2555 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2556 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2557 "exceeded the max(%u)\n",
2558 nesadapter->free_4kpbl,
2559 nesadapter->max_4kpbl);
2561 nesadapter->free_256pbl += nesmr->pbls_used;
2562 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2563 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2564 "exceeded the max(%u)\n",
2565 nesadapter->free_256pbl,
2566 nesadapter->max_256pbl);
2568 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2570 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2571 (ib_mr->rkey & 0x0fffff00) >> 8);
2582 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2585 struct nes_ib_device *nesibdev =
2586 container_of(dev, struct nes_ib_device, ibdev.dev);
2587 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2589 nes_debug(NES_DBG_INIT, "\n");
2590 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2597 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2600 nes_debug(NES_DBG_INIT, "\n");
2601 return sprintf(buf, "NES020\n");
2608 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2611 nes_debug(NES_DBG_INIT, "\n");
2612 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2616 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2617 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2618 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2620 static struct device_attribute *nes_dev_attributes[] = {
2630 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2631 int attr_mask, struct ib_qp_init_attr *init_attr)
2633 struct nes_qp *nesqp = to_nesqp(ibqp);
2635 nes_debug(NES_DBG_QP, "\n");
2637 attr->qp_access_flags = 0;
2638 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2639 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2640 attr->cap.max_recv_sge = 1;
2641 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2642 attr->cap.max_inline_data = 0;
2644 attr->cap.max_inline_data = 64;
2646 init_attr->event_handler = nesqp->ibqp.event_handler;
2647 init_attr->qp_context = nesqp->ibqp.qp_context;
2648 init_attr->send_cq = nesqp->ibqp.send_cq;
2649 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2650 init_attr->srq = nesqp->ibqp.srq;
2651 init_attr->cap = attr->cap;
2660 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2661 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2663 struct nes_hw_cqp_wqe *cqp_wqe;
2664 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2665 /* struct iw_cm_event cm_event; */
2666 struct nes_cqp_request *cqp_request;
2670 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2671 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2673 cqp_request = nes_get_cqp_request(nesdev);
2674 if (cqp_request == NULL) {
2675 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2678 if (wait_completion) {
2679 cqp_request->waiting = 1;
2681 cqp_request->waiting = 0;
2683 cqp_wqe = &cqp_request->cqp_wqe;
2685 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2686 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2687 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2688 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2689 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2690 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2691 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2693 /* If sending a terminate message, fill in the length (in words) */
2694 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2695 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2696 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2697 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2700 atomic_set(&cqp_request->refcount, 2);
2701 nes_post_cqp_request(nesdev, cqp_request);
2704 if (wait_completion) {
2705 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2706 nesqp->hwqp.qp_id); */
2707 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2709 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2710 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2711 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2712 major_code = cqp_request->major_code;
2714 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2715 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2716 nesqp->hwqp.qp_id, cqp_request->major_code,
2717 cqp_request->minor_code, next_iwarp_state);
2720 nes_put_cqp_request(nesdev, cqp_request);
2724 else if (major_code)
2737 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2738 int attr_mask, struct ib_udata *udata)
2740 struct nes_qp *nesqp = to_nesqp(ibqp);
2741 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2742 struct nes_device *nesdev = nesvnic->nesdev;
2745 u32 next_iwarp_state = 0;
2747 unsigned long qplockflags;
2749 u16 original_last_aeq;
2750 u8 issue_modify_qp = 0;
2753 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2754 " iwarp_state=0x%X, refcount=%d\n",
2755 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2756 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2758 spin_lock_irqsave(&nesqp->lock, qplockflags);
2760 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2761 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2762 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2763 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2765 if (attr_mask & IB_QP_STATE) {
2766 switch (attr->qp_state) {
2768 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2770 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2771 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2774 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2775 issue_modify_qp = 1;
2778 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2780 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2781 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2784 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2785 issue_modify_qp = 1;
2788 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2790 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2791 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2794 if (nesqp->cm_id == NULL) {
2795 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2796 nesqp->hwqp.qp_id );
2797 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2800 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2801 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2802 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2803 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2804 issue_modify_qp = 1;
2805 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2806 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2807 nesqp->hte_added = 1;
2810 issue_modify_qp = 1;
2811 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2812 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2813 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2814 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2817 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2818 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2819 " ignored due to current iWARP state\n",
2821 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2824 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
2825 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2826 " already done based on hw state.\n",
2828 issue_modify_qp = 0;
2830 switch (nesqp->hw_iwarp_state) {
2831 case NES_AEQE_IWARP_STATE_CLOSING:
2832 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2834 case NES_AEQE_IWARP_STATE_TERMINATE:
2835 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2837 case NES_AEQE_IWARP_STATE_ERROR:
2838 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2841 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
2842 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
2848 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
2850 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
2851 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2854 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2855 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2856 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
2857 issue_modify_qp = 1;
2861 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
2862 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2865 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
2867 if (nesqp->term_flags)
2868 del_timer(&nesqp->terminate_timer);
2870 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2871 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2872 if (nesqp->hte_added) {
2873 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
2874 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
2875 nesqp->hte_added = 0;
2877 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
2878 (nesdev->iw_status) &&
2879 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
2880 next_iwarp_state |= NES_CQP_QP_RESET;
2882 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
2883 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
2886 issue_modify_qp = 1;
2887 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
2890 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2895 nesqp->ibqp_state = attr->qp_state;
2896 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
2897 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
2898 nesqp->iwarp_state);
2901 if (attr_mask & IB_QP_ACCESS_FLAGS) {
2902 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
2903 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2904 NES_QPCONTEXT_MISC_RDMA_READ_EN);
2905 issue_modify_qp = 1;
2907 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
2908 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
2909 issue_modify_qp = 1;
2911 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
2912 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
2913 issue_modify_qp = 1;
2915 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
2916 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
2917 issue_modify_qp = 1;
2920 if (nesqp->user_mode) {
2921 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
2922 NES_QPCONTEXT_MISC_RDMA_READ_EN);
2923 issue_modify_qp = 1;
2927 original_last_aeq = nesqp->last_aeq;
2928 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2930 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
2935 if (issue_modify_qp) {
2936 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
2937 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
2939 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
2940 " failed for QP%u.\n",
2941 next_iwarp_state, nesqp->hwqp.qp_id);
2945 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
2946 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
2947 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2948 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2949 original_last_aeq, nesqp->last_aeq);
2950 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
2952 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
2953 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
2954 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2955 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2956 original_last_aeq, nesqp->last_aeq);
2957 /* this one is for the cm_disconnect thread */
2958 spin_lock_irqsave(&nesqp->lock, qplockflags);
2959 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
2960 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
2961 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2962 nes_cm_disconn(nesqp);
2964 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
2965 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2968 spin_lock_irqsave(&nesqp->lock, qplockflags);
2970 /* These two are for the timer thread */
2971 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
2972 nesqp->cm_id->add_ref(nesqp->cm_id);
2973 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
2974 " need ae to finish up, original_last_aeq = 0x%04X."
2975 " last_aeq = 0x%04X, scheduling timer.\n",
2976 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2977 original_last_aeq, nesqp->last_aeq);
2978 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
2980 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2982 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2983 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
2984 " need ae to finish up, original_last_aeq = 0x%04X."
2985 " last_aeq = 0x%04X.\n",
2986 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2987 original_last_aeq, nesqp->last_aeq);
2991 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
2992 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2993 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
2994 original_last_aeq, nesqp->last_aeq);
2997 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
2998 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
2999 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3000 original_last_aeq, nesqp->last_aeq);
3005 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3006 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3013 * nes_muticast_attach
3015 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3017 nes_debug(NES_DBG_INIT, "\n");
3023 * nes_multicast_detach
3025 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3027 nes_debug(NES_DBG_INIT, "\n");
3035 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3036 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
3037 const struct ib_mad_hdr *in, size_t in_mad_size,
3038 struct ib_mad_hdr *out, size_t *out_mad_size,
3039 u16 *out_mad_pkey_index)
3041 nes_debug(NES_DBG_INIT, "\n");
3046 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3049 int total_payload_length = 0;
3050 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3051 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3052 ib_wr->sg_list[sge_index].addr);
3053 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3054 ib_wr->sg_list[sge_index].length);
3056 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3057 (ib_wr->sg_list[sge_index].lkey));
3059 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3061 total_payload_length += ib_wr->sg_list[sge_index].length;
3063 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3064 total_payload_length);
3065 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3066 total_payload_length);
3072 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3073 struct ib_send_wr **bad_wr)
3076 unsigned long flags = 0;
3077 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3078 struct nes_device *nesdev = nesvnic->nesdev;
3079 struct nes_qp *nesqp = to_nesqp(ibqp);
3080 struct nes_hw_qp_wqe *wqe;
3082 u32 qsize = nesqp->hwqp.sq_size;
3088 if (nesqp->ibqp_state > IB_QPS_RTS) {
3093 spin_lock_irqsave(&nesqp->lock, flags);
3095 head = nesqp->hwqp.sq_head;
3098 /* Check for QP error */
3099 if (nesqp->term_flags) {
3104 /* Check for SQ overflow */
3105 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3110 wqe = &nesqp->hwqp.sq_vbase[head];
3111 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3112 nesqp->hwqp.qp_id, wqe, head); */
3113 nes_fill_init_qp_wqe(wqe, nesqp, head);
3114 u64temp = (u64)(ib_wr->wr_id);
3115 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3117 switch (ib_wr->opcode) {
3119 case IB_WR_SEND_WITH_INV:
3120 if (IB_WR_SEND == ib_wr->opcode) {
3121 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3122 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3124 wqe_misc = NES_IWARP_SQ_OP_SEND;
3126 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3127 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3129 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3131 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3132 ib_wr->ex.invalidate_rkey);
3135 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3140 if (ib_wr->send_flags & IB_SEND_FENCE)
3141 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3143 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3144 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3145 (ib_wr->sg_list[0].length <= 64)) {
3146 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3147 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3148 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3149 ib_wr->sg_list[0].length);
3150 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3152 fill_wqe_sg_send(wqe, ib_wr, 1);
3156 case IB_WR_RDMA_WRITE:
3157 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3158 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3159 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3160 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3165 if (ib_wr->send_flags & IB_SEND_FENCE)
3166 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3168 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3169 rdma_wr(ib_wr)->rkey);
3170 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3171 rdma_wr(ib_wr)->remote_addr);
3173 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3174 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3175 (ib_wr->sg_list[0].length <= 64)) {
3176 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3177 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3178 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3179 ib_wr->sg_list[0].length);
3180 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3182 fill_wqe_sg_send(wqe, ib_wr, 1);
3185 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3186 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3188 case IB_WR_RDMA_READ:
3189 case IB_WR_RDMA_READ_WITH_INV:
3190 /* iWARP only supports 1 sge for RDMA reads */
3191 if (ib_wr->num_sge > 1) {
3192 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3197 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3198 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3200 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3201 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3202 ib_wr->ex.invalidate_rkey);
3205 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3206 rdma_wr(ib_wr)->remote_addr);
3207 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3208 rdma_wr(ib_wr)->rkey);
3209 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3210 ib_wr->sg_list->length);
3211 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3212 ib_wr->sg_list->addr);
3213 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3214 ib_wr->sg_list->lkey);
3216 case IB_WR_LOCAL_INV:
3217 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3218 set_wqe_32bit_value(wqe->wqe_words,
3219 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3220 ib_wr->ex.invalidate_rkey);
3224 struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
3225 int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
3226 int flags = reg_wr(ib_wr)->access;
3228 if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3229 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3233 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3234 set_wqe_64bit_value(wqe->wqe_words,
3235 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3237 set_wqe_32bit_value(wqe->wqe_words,
3238 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3240 set_wqe_32bit_value(wqe->wqe_words,
3241 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3242 set_wqe_32bit_value(wqe->wqe_words,
3243 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3244 reg_wr(ib_wr)->key);
3246 if (page_shift == 12) {
3247 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3248 } else if (page_shift == 21) {
3249 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3251 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3252 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3257 /* Set access_flags */
3258 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3259 if (flags & IB_ACCESS_LOCAL_WRITE)
3260 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3262 if (flags & IB_ACCESS_REMOTE_WRITE)
3263 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3265 if (flags & IB_ACCESS_REMOTE_READ)
3266 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3268 if (flags & IB_ACCESS_MW_BIND)
3269 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3271 /* Fill in PBL info: */
3272 set_wqe_64bit_value(wqe->wqe_words,
3273 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3276 set_wqe_32bit_value(wqe->wqe_words,
3277 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3280 nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
3281 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3282 "page_list_len: %u, wqe_misc: %x\n",
3283 (unsigned long long) mr->ibmr.iova,
3286 (unsigned long long) mr->paddr,
3300 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3301 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3303 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3305 ib_wr = ib_wr->next;
3313 nesqp->hwqp.sq_head = head;
3316 counter = min(wqe_count, ((u32)255));
3317 wqe_count -= counter;
3318 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3319 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3322 spin_unlock_irqrestore(&nesqp->lock, flags);
3334 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3335 struct ib_recv_wr **bad_wr)
3338 unsigned long flags = 0;
3339 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3340 struct nes_device *nesdev = nesvnic->nesdev;
3341 struct nes_qp *nesqp = to_nesqp(ibqp);
3342 struct nes_hw_qp_wqe *wqe;
3345 u32 qsize = nesqp->hwqp.rq_size;
3349 u32 total_payload_length;
3351 if (nesqp->ibqp_state > IB_QPS_RTS) {
3356 spin_lock_irqsave(&nesqp->lock, flags);
3358 head = nesqp->hwqp.rq_head;
3361 /* Check for QP error */
3362 if (nesqp->term_flags) {
3367 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3371 /* Check for RQ overflow */
3372 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3377 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3378 wqe = &nesqp->hwqp.rq_vbase[head];
3380 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3381 nesqp->hwqp.qp_id, wqe, head); */
3382 nes_fill_init_qp_wqe(wqe, nesqp, head);
3383 u64temp = (u64)(ib_wr->wr_id);
3384 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3386 total_payload_length = 0;
3387 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3388 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3389 ib_wr->sg_list[sge_index].addr);
3390 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3391 ib_wr->sg_list[sge_index].length);
3392 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3393 ib_wr->sg_list[sge_index].lkey);
3395 total_payload_length += ib_wr->sg_list[sge_index].length;
3397 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3398 total_payload_length);
3400 ib_wr = ib_wr->next;
3407 nesqp->hwqp.rq_head = head;
3410 counter = min(wqe_count, ((u32)255));
3411 wqe_count -= counter;
3412 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3415 spin_unlock_irqrestore(&nesqp->lock, flags);
3424 * nes_drain_sq - drain sq
3425 * @ibqp: pointer to ibqp
3427 static void nes_drain_sq(struct ib_qp *ibqp)
3429 struct nes_qp *nesqp = to_nesqp(ibqp);
3431 if (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)
3432 wait_for_completion(&nesqp->sq_drained);
3436 * nes_drain_rq - drain rq
3437 * @ibqp: pointer to ibqp
3439 static void nes_drain_rq(struct ib_qp *ibqp)
3441 struct nes_qp *nesqp = to_nesqp(ibqp);
3443 if (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)
3444 wait_for_completion(&nesqp->rq_drained);
3450 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3454 unsigned long flags = 0;
3455 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3456 struct nes_device *nesdev = nesvnic->nesdev;
3457 struct nes_cq *nescq = to_nescq(ibcq);
3458 struct nes_qp *nesqp;
3459 struct nes_hw_cqe cqe;
3466 u32 move_cq_head = 1;
3469 nes_debug(NES_DBG_CQ, "\n");
3471 spin_lock_irqsave(&nescq->lock, flags);
3473 head = nescq->hw_cq.cq_head;
3474 cq_size = nescq->hw_cq.cq_size;
3476 while (cqe_count < num_entries) {
3477 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3478 NES_CQE_VALID) == 0)
3482 * Make sure we read CQ entry contents *after*
3483 * we've checked the valid bit.
3487 cqe = nescq->hw_cq.cq_vbase[head];
3488 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3489 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3490 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3491 /* parse CQE, get completion context from WQE (either rq or sq) */
3492 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3496 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3497 memset(entry, 0, sizeof *entry);
3498 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3499 entry->status = IB_WC_SUCCESS;
3501 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3502 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3503 entry->status = err_code & 0x0000ffff;
3505 /* The rest of the cqe's will be marked as flushed */
3506 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3507 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3508 NES_IWARP_CQE_MINOR_FLUSH);
3510 entry->status = IB_WC_WR_FLUSH_ERR;
3513 entry->qp = &nesqp->ibqp;
3514 entry->src_qp = nesqp->hwqp.qp_id;
3516 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3517 if (nesqp->skip_lsmm) {
3518 nesqp->skip_lsmm = 0;
3519 nesqp->hwqp.sq_tail++;
3522 /* Working on a SQ Completion*/
3523 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3524 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3525 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3526 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3527 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3528 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3530 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3531 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3532 case NES_IWARP_SQ_OP_RDMAW:
3533 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3534 entry->opcode = IB_WC_RDMA_WRITE;
3536 case NES_IWARP_SQ_OP_RDMAR:
3537 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3538 entry->opcode = IB_WC_RDMA_READ;
3539 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3540 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3542 case NES_IWARP_SQ_OP_SENDINV:
3543 case NES_IWARP_SQ_OP_SENDSEINV:
3544 case NES_IWARP_SQ_OP_SEND:
3545 case NES_IWARP_SQ_OP_SENDSE:
3546 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3547 entry->opcode = IB_WC_SEND;
3549 case NES_IWARP_SQ_OP_LOCINV:
3550 entry->opcode = IB_WC_LOCAL_INV;
3552 case NES_IWARP_SQ_OP_FAST_REG:
3553 entry->opcode = IB_WC_REG_MR;
3557 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3558 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3560 wq_tail = nesqp->hwqp.sq_tail;
3563 /* Working on a RQ Completion*/
3564 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3565 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3566 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3567 entry->opcode = IB_WC_RECV;
3569 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3570 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3572 wq_tail = nesqp->hwqp.rq_tail;
3576 if (nesqp->iwarp_state > NES_CQP_QP_IWARP_STATE_RTS) {
3577 if (nesqp->hwqp.sq_tail == nesqp->hwqp.sq_head)
3578 complete(&nesqp->sq_drained);
3579 if (nesqp->hwqp.rq_tail == nesqp->hwqp.rq_head)
3580 complete(&nesqp->rq_drained);
3583 entry->wr_id = wrid;
3589 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3590 if (++head >= cq_size)
3592 nescq->polled_completions++;
3594 if ((nescq->polled_completions > (cq_size / 2)) ||
3595 (nescq->polled_completions == 255)) {
3596 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3597 " are pending %u of %u.\n",
3598 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3599 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3600 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3601 nescq->polled_completions = 0;
3604 /* Update the wqe index and set status to flush */
3605 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3606 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3607 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3608 cpu_to_le32(wqe_index);
3609 move_cq_head = 1; /* ready for next pass */
3613 if (nescq->polled_completions) {
3614 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3615 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3616 nescq->polled_completions = 0;
3619 nescq->hw_cq.cq_head = head;
3620 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3621 cqe_count, nescq->hw_cq.cq_number);
3623 spin_unlock_irqrestore(&nescq->lock, flags);
3632 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3634 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3635 struct nes_device *nesdev = nesvnic->nesdev;
3636 struct nes_cq *nescq = to_nescq(ibcq);
3639 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3640 nescq->hw_cq.cq_number);
3642 cq_arm = nescq->hw_cq.cq_number;
3643 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3644 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3645 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3646 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3650 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3651 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3656 static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3657 struct ib_port_immutable *immutable)
3659 struct ib_port_attr attr;
3662 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
3664 err = nes_query_port(ibdev, port_num, &attr);
3668 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3669 immutable->gid_tbl_len = attr.gid_tbl_len;
3674 static void get_dev_fw_str(struct ib_device *dev, char *str,
3677 struct nes_ib_device *nesibdev =
3678 container_of(dev, struct nes_ib_device, ibdev);
3679 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3681 nes_debug(NES_DBG_INIT, "\n");
3682 snprintf(str, str_len, "%u.%u",
3683 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
3684 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
3688 * nes_init_ofa_device
3690 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3692 struct nes_ib_device *nesibdev;
3693 struct nes_vnic *nesvnic = netdev_priv(netdev);
3694 struct nes_device *nesdev = nesvnic->nesdev;
3696 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3697 if (nesibdev == NULL) {
3700 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3701 nesibdev->ibdev.owner = THIS_MODULE;
3703 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3704 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3705 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3707 nesibdev->ibdev.uverbs_cmd_mask =
3708 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3709 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3710 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3711 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3712 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3713 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3714 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3715 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3716 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3717 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3718 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3719 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3720 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3721 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3722 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3723 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3724 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3725 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3726 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3727 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3728 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3729 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3731 nesibdev->ibdev.phys_port_cnt = 1;
3732 nesibdev->ibdev.num_comp_vectors = 1;
3733 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3734 nesibdev->ibdev.query_device = nes_query_device;
3735 nesibdev->ibdev.query_port = nes_query_port;
3736 nesibdev->ibdev.query_pkey = nes_query_pkey;
3737 nesibdev->ibdev.query_gid = nes_query_gid;
3738 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3739 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3740 nesibdev->ibdev.mmap = nes_mmap;
3741 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3742 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3743 nesibdev->ibdev.create_ah = nes_create_ah;
3744 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3745 nesibdev->ibdev.create_qp = nes_create_qp;
3746 nesibdev->ibdev.modify_qp = nes_modify_qp;
3747 nesibdev->ibdev.query_qp = nes_query_qp;
3748 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3749 nesibdev->ibdev.create_cq = nes_create_cq;
3750 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3751 nesibdev->ibdev.poll_cq = nes_poll_cq;
3752 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3753 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3754 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3755 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3756 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3758 nesibdev->ibdev.alloc_mr = nes_alloc_mr;
3759 nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
3761 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3762 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3763 nesibdev->ibdev.process_mad = nes_process_mad;
3765 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3766 nesibdev->ibdev.post_send = nes_post_send;
3767 nesibdev->ibdev.post_recv = nes_post_recv;
3768 nesibdev->ibdev.drain_sq = nes_drain_sq;
3769 nesibdev->ibdev.drain_rq = nes_drain_rq;
3771 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3772 if (nesibdev->ibdev.iwcm == NULL) {
3773 ib_dealloc_device(&nesibdev->ibdev);
3776 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3777 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3778 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3779 nesibdev->ibdev.iwcm->connect = nes_connect;
3780 nesibdev->ibdev.iwcm->accept = nes_accept;
3781 nesibdev->ibdev.iwcm->reject = nes_reject;
3782 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3783 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3784 nesibdev->ibdev.get_port_immutable = nes_port_immutable;
3785 nesibdev->ibdev.get_dev_fw_str = get_dev_fw_str;
3786 memcpy(nesibdev->ibdev.iwcm->ifname, netdev->name,
3787 sizeof(nesibdev->ibdev.iwcm->ifname));
3794 * nes_handle_delayed_event
3796 static void nes_handle_delayed_event(unsigned long data)
3798 struct nes_vnic *nesvnic = (void *) data;
3800 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3801 struct ib_event event;
3803 event.device = &nesvnic->nesibdev->ibdev;
3806 event.event = nesvnic->delayed_event;
3807 event.element.port_num = nesvnic->logical_port + 1;
3808 ib_dispatch_event(&event);
3812 nesvnic->event_timer.function = NULL;
3816 void nes_port_ibevent(struct nes_vnic *nesvnic)
3818 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3819 struct nes_device *nesdev = nesvnic->nesdev;
3820 struct ib_event event;
3821 event.device = &nesibdev->ibdev;
3822 event.element.port_num = nesvnic->logical_port + 1;
3823 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
3825 if (!nesvnic->event_timer.function) {
3826 ib_dispatch_event(&event);
3827 nesvnic->last_dispatched_event = event.event;
3828 nesvnic->event_timer.function = nes_handle_delayed_event;
3829 nesvnic->event_timer.data = (unsigned long) nesvnic;
3830 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3831 add_timer(&nesvnic->event_timer);
3833 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3835 nesvnic->delayed_event = event.event;
3840 * nes_destroy_ofa_device
3842 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3844 if (nesibdev == NULL)
3847 nes_unregister_ofa_device(nesibdev);
3849 kfree(nesibdev->ibdev.iwcm);
3850 ib_dealloc_device(&nesibdev->ibdev);
3855 * nes_register_ofa_device
3857 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3859 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3860 struct nes_device *nesdev = nesvnic->nesdev;
3861 struct nes_adapter *nesadapter = nesdev->nesadapter;
3864 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3869 /* Get the resources allocated to this device */
3870 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3871 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3872 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3873 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3875 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3876 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3880 device_remove_file(&nesibdev->ibdev.dev,
3881 nes_dev_attributes[i]);
3883 ib_unregister_device(&nesibdev->ibdev);
3888 nesvnic->of_device_registered = 1;
3895 * nes_unregister_ofa_device
3897 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3899 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3902 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3903 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3906 if (nesvnic->of_device_registered) {
3907 ib_unregister_device(&nesibdev->ibdev);
3910 nesvnic->of_device_registered = 0;