2 * Copyright (c) 2006 - 2009 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);
58 static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) {
59 struct nes_pd *nespd = to_nespd(ibpd);
60 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
61 struct nes_device *nesdev = nesvnic->nesdev;
62 struct nes_adapter *nesadapter = nesdev->nesadapter;
63 struct nes_cqp_request *cqp_request;
66 struct nes_hw_cqp_wqe *cqp_wqe;
70 u32 next_stag_index = 0;
74 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
75 stag_key = (u8)next_stag_index;
79 next_stag_index >>= 8;
80 next_stag_index %= nesadapter->max_mr;
82 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
83 nesadapter->max_mr, &stag_index, &next_stag_index);
88 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
90 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
91 return ERR_PTR(-ENOMEM);
94 stag = stag_index << 8;
96 stag += (u32)stag_key;
98 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
101 /* Register the region with the adapter */
102 cqp_request = nes_get_cqp_request(nesdev);
103 if (cqp_request == NULL) {
105 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
106 return ERR_PTR(-ENOMEM);
109 cqp_request->waiting = 1;
110 cqp_wqe = &cqp_request->cqp_wqe;
112 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
113 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
114 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
115 NES_CQP_STAG_REM_ACC_EN);
117 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
119 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
121 atomic_set(&cqp_request->refcount, 2);
122 nes_post_cqp_request(nesdev, cqp_request);
125 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
127 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
128 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
129 stag, ret, cqp_request->major_code, cqp_request->minor_code);
130 if ((!ret) || (cqp_request->major_code)) {
131 nes_put_cqp_request(nesdev, cqp_request);
133 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
135 return ERR_PTR(-ETIME);
137 return ERR_PTR(-ENOMEM);
140 nes_put_cqp_request(nesdev, cqp_request);
142 nesmr->ibmw.rkey = stag;
143 nesmr->mode = IWNES_MEMREG_TYPE_MW;
146 nesmr->pbls_used = 0;
155 static int nes_dealloc_mw(struct ib_mw *ibmw)
157 struct nes_mr *nesmr = to_nesmw(ibmw);
158 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
159 struct nes_device *nesdev = nesvnic->nesdev;
160 struct nes_adapter *nesadapter = nesdev->nesadapter;
161 struct nes_hw_cqp_wqe *cqp_wqe;
162 struct nes_cqp_request *cqp_request;
166 /* Deallocate the window with the adapter */
167 cqp_request = nes_get_cqp_request(nesdev);
168 if (cqp_request == NULL) {
169 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
172 cqp_request->waiting = 1;
173 cqp_wqe = &cqp_request->cqp_wqe;
174 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
176 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
178 atomic_set(&cqp_request->refcount, 2);
179 nes_post_cqp_request(nesdev, cqp_request);
182 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
184 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
186 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
187 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
188 ret, cqp_request->major_code, cqp_request->minor_code);
191 else if (cqp_request->major_code)
194 nes_put_cqp_request(nesdev, cqp_request);
196 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
197 (ibmw->rkey & 0x0fffff00) >> 8);
207 static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
208 struct ib_mw_bind *ibmw_bind)
211 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
212 struct nes_device *nesdev = nesvnic->nesdev;
213 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
214 struct nes_qp *nesqp = to_nesqp(ibqp);
215 struct nes_hw_qp_wqe *wqe;
216 unsigned long flags = 0;
221 if (nesqp->ibqp_state > IB_QPS_RTS)
224 spin_lock_irqsave(&nesqp->lock, flags);
226 head = nesqp->hwqp.sq_head;
227 qsize = nesqp->hwqp.sq_tail;
229 /* Check for SQ overflow */
230 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
231 spin_unlock_irqrestore(&nesqp->lock, flags);
235 wqe = &nesqp->hwqp.sq_vbase[head];
236 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
237 nes_fill_init_qp_wqe(wqe, nesqp, head);
238 u64temp = ibmw_bind->wr_id;
239 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
240 wqe_misc = NES_IWARP_SQ_OP_BIND;
242 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
244 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
245 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
247 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) {
248 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
250 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) {
251 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey);
256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
259 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
260 u64temp = (u64)ibmw_bind->addr;
261 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
267 nesqp->hwqp.sq_head = head;
270 nes_write32(nesdev->regs+NES_WQE_ALLOC,
271 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
273 spin_unlock_irqrestore(&nesqp->lock, flags);
282 static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
283 u32 stag, u32 page_count)
285 struct nes_hw_cqp_wqe *cqp_wqe;
286 struct nes_cqp_request *cqp_request;
289 struct nes_adapter *nesadapter = nesdev->nesadapter;
292 u64 region_length = page_count * PAGE_SIZE;
295 cqp_request = nes_get_cqp_request(nesdev);
296 if (cqp_request == NULL) {
297 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
300 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
301 "region_length = %llu\n",
302 page_count, region_length);
303 cqp_request->waiting = 1;
304 cqp_wqe = &cqp_request->cqp_wqe;
306 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
307 if (nesadapter->free_4kpbl > 0) {
308 nesadapter->free_4kpbl--;
309 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
311 /* No 4kpbl's available: */
312 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
313 nes_debug(NES_DBG_MR, "Out of Pbls\n");
314 nes_free_cqp_request(nesdev, cqp_request);
318 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
319 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
320 NES_CQP_STAG_REM_ACC_EN;
322 * The current OFED API does not support the zero based TO option.
323 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
324 * the API does not support that ability to have the MR set for local
325 * access only when created and not allow the SQ op to override. Given
326 * this the remote enable must be set here.
329 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
330 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
331 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
333 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
334 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
335 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
336 cpu_to_le32(nespd->pd_id & 0x00007fff);
338 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
339 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
340 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
341 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
342 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
343 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
346 atomic_set(&cqp_request->refcount, 2);
347 nes_post_cqp_request(nesdev, cqp_request);
350 ret = wait_event_timeout(cqp_request->waitq,
351 (0 != cqp_request->request_done),
354 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
355 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
356 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
357 cqp_request->minor_code);
358 major_code = cqp_request->major_code;
359 nes_put_cqp_request(nesdev, cqp_request);
361 if (!ret || major_code) {
362 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
363 nesadapter->free_4kpbl++;
364 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
375 * nes_alloc_fast_reg_mr
377 struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int max_page_list_len)
379 struct nes_pd *nespd = to_nespd(ibpd);
380 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
381 struct nes_device *nesdev = nesvnic->nesdev;
382 struct nes_adapter *nesadapter = nesdev->nesadapter;
389 struct nes_mr *nesmr;
394 * Note: Set to always use a fixed length single page entry PBL. This is to allow
395 * for the fast_reg_mr operation to always know the size of the PBL.
397 if (max_page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
398 return ERR_PTR(-E2BIG);
400 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
401 stag_key = (u8)next_stag_index;
402 next_stag_index >>= 8;
403 next_stag_index %= nesadapter->max_mr;
405 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
406 nesadapter->max_mr, &stag_index,
411 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
413 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
414 return ERR_PTR(-ENOMEM);
417 stag = stag_index << 8;
419 stag += (u32)stag_key;
421 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
424 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_page_list_len);
427 nesmr->ibmr.rkey = stag;
428 nesmr->ibmr.lkey = stag;
429 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
433 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
434 ibmr = ERR_PTR(-ENOMEM);
440 * nes_alloc_fast_reg_page_list
442 static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list(
443 struct ib_device *ibdev,
446 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
447 struct nes_device *nesdev = nesvnic->nesdev;
448 struct ib_fast_reg_page_list *pifrpl;
449 struct nes_ib_fast_reg_page_list *pnesfrpl;
451 if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
452 return ERR_PTR(-E2BIG);
454 * Allocate the ib_fast_reg_page_list structure, the
455 * nes_fast_bpl structure, and the PLB table.
457 pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) +
458 page_list_len * sizeof(u64), GFP_KERNEL);
461 return ERR_PTR(-ENOMEM);
463 pifrpl = &pnesfrpl->ibfrpl;
464 pifrpl->page_list = &pnesfrpl->pbl;
465 pifrpl->max_page_list_len = page_list_len;
467 * Allocate the WQE PBL
469 pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev,
470 page_list_len * sizeof(u64),
471 &pnesfrpl->nes_wqe_pbl.paddr);
473 if (!pnesfrpl->nes_wqe_pbl.kva) {
475 return ERR_PTR(-ENOMEM);
477 nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, "
478 "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, "
479 "pbl.paddr= %p\n", pnesfrpl, &pnesfrpl->ibfrpl,
480 pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva,
481 (void *)pnesfrpl->nes_wqe_pbl.paddr);
487 * nes_free_fast_reg_page_list
489 static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl)
491 struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device);
492 struct nes_device *nesdev = nesvnic->nesdev;
493 struct nes_ib_fast_reg_page_list *pnesfrpl;
495 pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl);
499 pci_free_consistent(nesdev->pcidev,
500 pifrpl->max_page_list_len * sizeof(u64),
501 pnesfrpl->nes_wqe_pbl.kva,
502 pnesfrpl->nes_wqe_pbl.paddr);
504 * Free the PBL structure
512 static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
514 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
515 struct nes_device *nesdev = nesvnic->nesdev;
516 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
518 memset(props, 0, sizeof(*props));
519 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
521 props->fw_ver = nesdev->nesadapter->fw_ver;
522 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
523 props->vendor_id = nesdev->nesadapter->vendor_id;
524 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
525 props->hw_ver = nesdev->nesadapter->hw_rev;
526 props->max_mr_size = 0x80000000;
527 props->max_qp = nesibdev->max_qp;
528 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
529 props->max_sge = nesdev->nesadapter->max_sge;
530 props->max_cq = nesibdev->max_cq;
531 props->max_cqe = nesdev->nesadapter->max_cqe;
532 props->max_mr = nesibdev->max_mr;
533 props->max_mw = nesibdev->max_mr;
534 props->max_pd = nesibdev->max_pd;
535 props->max_sge_rd = 1;
536 switch (nesdev->nesadapter->max_irrq_wr) {
538 props->max_qp_rd_atom = 2;
541 props->max_qp_rd_atom = 8;
544 props->max_qp_rd_atom = 32;
547 props->max_qp_rd_atom = 64;
550 props->max_qp_rd_atom = 0;
552 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
553 props->atomic_cap = IB_ATOMIC_NONE;
554 props->max_map_per_fmr = 1;
563 static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
565 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
566 struct net_device *netdev = nesvnic->netdev;
568 memset(props, 0, sizeof(*props));
570 props->max_mtu = IB_MTU_4096;
572 if (netdev->mtu >= 4096)
573 props->active_mtu = IB_MTU_4096;
574 else if (netdev->mtu >= 2048)
575 props->active_mtu = IB_MTU_2048;
576 else if (netdev->mtu >= 1024)
577 props->active_mtu = IB_MTU_1024;
578 else if (netdev->mtu >= 512)
579 props->active_mtu = IB_MTU_512;
581 props->active_mtu = IB_MTU_256;
588 props->state = IB_PORT_ACTIVE;
590 props->state = IB_PORT_DOWN;
591 props->phys_state = 0;
592 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
593 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
594 props->gid_tbl_len = 1;
595 props->pkey_tbl_len = 1;
596 props->qkey_viol_cntr = 0;
597 props->active_width = IB_WIDTH_4X;
598 props->active_speed = 1;
599 props->max_msg_sz = 0x80000000;
608 static int nes_modify_port(struct ib_device *ibdev, u8 port,
609 int port_modify_mask, struct ib_port_modify *props)
618 static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
628 static int nes_query_gid(struct ib_device *ibdev, u8 port,
629 int index, union ib_gid *gid)
631 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
633 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
634 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
641 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
642 * of all objects associated with a particular user-mode client.
644 static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
645 struct ib_udata *udata)
647 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
648 struct nes_device *nesdev = nesvnic->nesdev;
649 struct nes_adapter *nesadapter = nesdev->nesadapter;
650 struct nes_alloc_ucontext_req req;
651 struct nes_alloc_ucontext_resp uresp;
652 struct nes_ucontext *nes_ucontext;
653 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
656 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
657 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
658 return ERR_PTR(-EINVAL);
661 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
662 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
663 req.userspace_ver, NES_ABI_USERSPACE_VER);
664 return ERR_PTR(-EINVAL);
668 memset(&uresp, 0, sizeof uresp);
670 uresp.max_qps = nesibdev->max_qp;
671 uresp.max_pds = nesibdev->max_pd;
672 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
673 uresp.virtwq = nesadapter->virtwq;
674 uresp.kernel_ver = NES_ABI_KERNEL_VER;
676 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
678 return ERR_PTR(-ENOMEM);
680 nes_ucontext->nesdev = nesdev;
681 nes_ucontext->mmap_wq_offset = uresp.max_pds;
682 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
683 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
687 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
689 return ERR_PTR(-EFAULT);
692 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
693 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
694 atomic_set(&nes_ucontext->usecnt, 1);
695 return &nes_ucontext->ibucontext;
700 * nes_dealloc_ucontext
702 static int nes_dealloc_ucontext(struct ib_ucontext *context)
704 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
705 /* struct nes_device *nesdev = nesvnic->nesdev; */
706 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
708 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
718 static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
721 struct nes_vnic *nesvnic = to_nesvnic(context->device);
722 struct nes_device *nesdev = nesvnic->nesdev;
723 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
724 struct nes_ucontext *nes_ucontext;
725 struct nes_qp *nesqp;
727 nes_ucontext = to_nesucontext(context);
730 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
731 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
732 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
733 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
734 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
735 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
738 nesqp = nes_ucontext->mmap_nesqp[index];
740 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
743 if (remap_pfn_range(vma, vma->vm_start,
744 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
745 vma->vm_end - vma->vm_start,
746 vma->vm_page_prot)) {
747 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
750 vma->vm_private_data = nesqp;
753 index = vma->vm_pgoff;
754 if (!test_bit(index, nes_ucontext->allocated_doorbells))
757 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
758 if (io_remap_pfn_range(vma, vma->vm_start,
759 (nesdev->doorbell_start +
760 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
761 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
763 vma->vm_private_data = nes_ucontext;
774 static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
775 struct ib_ucontext *context, struct ib_udata *udata)
777 struct nes_pd *nespd;
778 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
779 struct nes_device *nesdev = nesvnic->nesdev;
780 struct nes_adapter *nesadapter = nesdev->nesadapter;
781 struct nes_ucontext *nesucontext;
782 struct nes_alloc_pd_resp uresp;
786 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
787 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
788 atomic_read(&nesvnic->netdev->refcnt));
790 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
791 nesadapter->max_pd, &pd_num, &nesadapter->next_pd);
796 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
798 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
799 return ERR_PTR(-ENOMEM);
802 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
803 nespd, nesvnic->nesibdev->ibdev.name);
805 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
808 nesucontext = to_nesucontext(context);
809 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
810 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
811 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
812 nespd->mmap_db_index, nespd->pd_id);
813 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
814 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
815 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
817 return ERR_PTR(-ENOMEM);
820 uresp.pd_id = nespd->pd_id;
821 uresp.mmap_db_index = nespd->mmap_db_index;
822 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
823 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
825 return ERR_PTR(-EFAULT);
828 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
829 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
830 nesucontext->first_free_db = nespd->mmap_db_index + 1;
833 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
841 static int nes_dealloc_pd(struct ib_pd *ibpd)
843 struct nes_ucontext *nesucontext;
844 struct nes_pd *nespd = to_nespd(ibpd);
845 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
846 struct nes_device *nesdev = nesvnic->nesdev;
847 struct nes_adapter *nesadapter = nesdev->nesadapter;
849 if ((ibpd->uobject) && (ibpd->uobject->context)) {
850 nesucontext = to_nesucontext(ibpd->uobject->context);
851 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
852 nespd->mmap_db_index);
853 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
854 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
855 if (nesucontext->first_free_db > nespd->mmap_db_index) {
856 nesucontext->first_free_db = nespd->mmap_db_index;
860 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
861 nespd->pd_id, nespd);
862 nes_free_resource(nesadapter, nesadapter->allocated_pds,
863 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
873 static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
875 return ERR_PTR(-ENOSYS);
882 static int nes_destroy_ah(struct ib_ah *ah)
889 * nes_get_encoded_size
891 static inline u8 nes_get_encoded_size(int *size)
897 } else if (*size <= 128) {
900 } else if (*size <= 512) {
904 return (encoded_size);
912 static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
913 struct nes_vnic *nesvnic, int sq_size, int rq_size)
920 struct nes_device *nesdev = nesvnic->nesdev;
921 struct nes_adapter *nesadapter = nesdev->nesadapter;
926 pbl_entries = nespbl->pbl_size >> 3;
927 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
928 nespbl->pbl_size, pbl_entries,
929 (void *)nespbl->pbl_vbase,
930 (unsigned long) nespbl->pbl_pbase);
931 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
932 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
933 /* the first pbl to be fro the rq_vbase... */
934 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
935 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
936 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
938 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
943 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
944 nesqp->page = nespbl->page;
945 if (!nesqp->hwqp.sq_vbase) {
946 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
951 /* Now to get to sq.. we need to calculate how many */
952 /* PBL entries were used by the rq.. */
953 pbl += sq_pbl_entries;
954 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
955 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
956 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
958 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
959 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
960 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
961 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
962 if (!nesadapter->free_256pbl) {
963 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
965 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
970 nesadapter->free_256pbl--;
971 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
973 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
974 pblbuffer = nesqp->pbl_vbase;
975 if (!nesqp->pbl_vbase) {
976 /* memory allocated during nes_reg_user_mr() */
977 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
980 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
981 nesadapter->free_256pbl++;
982 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
986 memset(nesqp->pbl_vbase, 0, 256);
987 /* fill in the page address in the pbl buffer.. */
988 tpbl = pblbuffer + 16;
989 pbl = (__le64 *)nespbl->pbl_vbase;
990 while (sq_pbl_entries--)
993 while (rq_pbl_entries--)
996 /* done with memory allocated during nes_reg_user_mr() */
997 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1001 nesqp->qp_mem_size =
1002 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1003 /* Round up to a multiple of a page */
1004 nesqp->qp_mem_size += PAGE_SIZE - 1;
1005 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1007 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1008 &nesqp->hwqp.q2_pbase);
1011 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1012 nesqp->pbl_vbase = NULL;
1013 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1014 nesadapter->free_256pbl++;
1015 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1016 kunmap(nesqp->page);
1019 nesqp->sq_kmapped = 1;
1020 nesqp->hwqp.q2_vbase = mem;
1022 memset(nesqp->hwqp.q2_vbase, 0, 256);
1023 nesqp->nesqp_context = mem;
1024 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1025 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1034 static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1035 int sq_size, int rq_size)
1038 struct nes_device *nesdev = nesvnic->nesdev;
1040 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1041 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1042 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1043 256; /* this is Q2 */
1044 /* Round up to a multiple of a page */
1045 nesqp->qp_mem_size += PAGE_SIZE - 1;
1046 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1048 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1049 &nesqp->hwqp.sq_pbase);
1052 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1053 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1054 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1056 memset(mem, 0, nesqp->qp_mem_size);
1058 nesqp->hwqp.sq_vbase = mem;
1059 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1061 nesqp->hwqp.rq_vbase = mem;
1062 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1063 sizeof(struct nes_hw_qp_wqe) * sq_size;
1064 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1066 nesqp->hwqp.q2_vbase = mem;
1067 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1068 sizeof(struct nes_hw_qp_wqe) * rq_size;
1070 memset(nesqp->hwqp.q2_vbase, 0, 256);
1072 nesqp->nesqp_context = mem;
1073 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1074 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1080 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1082 static inline void nes_free_qp_mem(struct nes_device *nesdev,
1083 struct nes_qp *nesqp, int virt_wqs)
1085 unsigned long flags;
1086 struct nes_adapter *nesadapter = nesdev->nesadapter;
1088 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1089 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1091 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1092 nesadapter->free_256pbl++;
1093 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1094 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1095 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1096 nesqp->pbl_vbase = NULL;
1097 if (nesqp->sq_kmapped) {
1098 nesqp->sq_kmapped = 0;
1099 kunmap(nesqp->page);
1108 static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1109 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1113 struct nes_pd *nespd = to_nespd(ibpd);
1114 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1115 struct nes_device *nesdev = nesvnic->nesdev;
1116 struct nes_adapter *nesadapter = nesdev->nesadapter;
1117 struct nes_qp *nesqp;
1118 struct nes_cq *nescq;
1119 struct nes_ucontext *nes_ucontext;
1120 struct nes_hw_cqp_wqe *cqp_wqe;
1121 struct nes_cqp_request *cqp_request;
1122 struct nes_create_qp_req req;
1123 struct nes_create_qp_resp uresp;
1124 struct nes_pbl *nespbl = NULL;
1127 /* u32 counter = 0; */
1129 unsigned long flags;
1139 if (init_attr->create_flags)
1140 return ERR_PTR(-EINVAL);
1142 atomic_inc(&qps_created);
1143 switch (init_attr->qp_type) {
1145 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1146 init_attr->cap.max_inline_data = 0;
1148 init_attr->cap.max_inline_data = 64;
1150 sq_size = init_attr->cap.max_send_wr;
1151 rq_size = init_attr->cap.max_recv_wr;
1153 /* check if the encoded sizes are OK or not... */
1154 sq_encoded_size = nes_get_encoded_size(&sq_size);
1155 rq_encoded_size = nes_get_encoded_size(&rq_size);
1157 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1158 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1160 return ERR_PTR(-EINVAL);
1163 init_attr->cap.max_send_wr = sq_size -2;
1164 init_attr->cap.max_recv_wr = rq_size -1;
1165 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1167 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
1168 nesadapter->max_qp, &qp_num, &nesadapter->next_qp);
1170 return ERR_PTR(ret);
1173 /* Need 512 (actually now 1024) byte alignment on this structure */
1174 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1176 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1177 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1178 return ERR_PTR(-ENOMEM);
1180 u64nesqp = (unsigned long)mem;
1181 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1182 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1183 u64nesqp &= ~u64temp;
1184 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1185 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1186 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1187 nesqp->allocated_buffer = mem;
1190 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1191 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1192 kfree(nesqp->allocated_buffer);
1193 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1196 if (req.user_wqe_buffers) {
1199 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1200 nesqp->user_mode = 1;
1201 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1204 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1205 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1206 list_del(&nespbl->list);
1208 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1209 nespbl, nespbl->user_base);
1214 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1215 (long long unsigned int)req.user_wqe_buffers);
1216 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1217 kfree(nesqp->allocated_buffer);
1218 return ERR_PTR(-EFAULT);
1222 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1223 nesqp->mmap_sq_db_index =
1224 find_next_zero_bit(nes_ucontext->allocated_wqs,
1225 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1226 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1227 nespd->mmap_db_index); */
1228 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
1229 nes_debug(NES_DBG_QP,
1230 "db index > max user regions, failing create QP\n");
1231 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1233 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1237 kfree(nesqp->allocated_buffer);
1238 return ERR_PTR(-ENOMEM);
1240 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1241 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1242 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1244 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1245 kfree(nesqp->allocated_buffer);
1246 return ERR_PTR(-EFAULT);
1249 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1250 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1252 nes_debug(NES_DBG_QP,
1253 "error geting qp mem code = %d\n", err);
1254 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1255 kfree(nesqp->allocated_buffer);
1256 return ERR_PTR(-ENOMEM);
1259 nesqp->hwqp.sq_size = sq_size;
1260 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1261 nesqp->hwqp.sq_head = 1;
1262 nesqp->hwqp.rq_size = rq_size;
1263 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1264 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1265 (void *)nesqp->nesqp_context_pbase);
1267 nesqp->hwqp.qp_id = qp_num;
1268 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1269 nesqp->nespd = nespd;
1271 nescq = to_nescq(init_attr->send_cq);
1272 nesqp->nesscq = nescq;
1273 nescq = to_nescq(init_attr->recv_cq);
1274 nesqp->nesrcq = nescq;
1276 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1277 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1278 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1279 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1280 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1281 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
1283 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1284 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
1286 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1287 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1288 u64temp = (u64)nesqp->hwqp.sq_pbase;
1289 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1290 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1294 u64temp = (u64)nesqp->hwqp.sq_pbase;
1295 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1296 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1297 u64temp = (u64)nesqp->hwqp.rq_pbase;
1298 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1299 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1301 u64temp = (u64)nesqp->pbl_pbase;
1302 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1303 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1306 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1307 nesvnic->next_qp_nic_index,
1308 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1309 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1310 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1311 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1312 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1313 nesvnic->next_qp_nic_index++;
1314 if ((nesvnic->next_qp_nic_index > 3) ||
1315 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1316 nesvnic->next_qp_nic_index = 0;
1318 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1320 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1321 u64temp = (u64)nesqp->hwqp.q2_pbase;
1322 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1323 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1324 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1325 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1326 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
1327 NES_QPCONTEXT_ORDIRD_AAH |
1328 ((((u32)nesadapter->max_irrq_wr) <<
1329 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1330 if (disable_mpa_crc) {
1331 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1332 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1337 cqp_request = nes_get_cqp_request(nesdev);
1338 if (cqp_request == NULL) {
1339 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1340 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1341 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1342 kfree(nesqp->allocated_buffer);
1343 return ERR_PTR(-ENOMEM);
1345 cqp_request->waiting = 1;
1346 cqp_wqe = &cqp_request->cqp_wqe;
1349 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1350 NES_CQP_QP_IWARP_STATE_IDLE;
1352 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1353 NES_CQP_QP_IWARP_STATE_IDLE;
1355 opcode |= NES_CQP_QP_CQS_VALID;
1356 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1357 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1358 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1360 u64temp = (u64)nesqp->nesqp_context_pbase;
1361 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1363 atomic_set(&cqp_request->refcount, 2);
1364 nes_post_cqp_request(nesdev, cqp_request);
1367 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1369 ret = wait_event_timeout(cqp_request->waitq,
1370 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1371 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1372 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1373 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1374 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1375 cqp_request->major_code, cqp_request->minor_code);
1376 if ((!ret) || (cqp_request->major_code)) {
1377 nes_put_cqp_request(nesdev, cqp_request);
1378 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1379 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1380 kfree(nesqp->allocated_buffer);
1382 return ERR_PTR(-ETIME);
1384 return ERR_PTR(-EIO);
1388 nes_put_cqp_request(nesdev, cqp_request);
1390 if (ibpd->uobject) {
1391 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
1392 uresp.actual_sq_size = sq_size;
1393 uresp.actual_rq_size = rq_size;
1394 uresp.qp_id = nesqp->hwqp.qp_id;
1395 uresp.nes_drv_opt = nes_drv_opt;
1396 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1397 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1398 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1399 kfree(nesqp->allocated_buffer);
1400 return ERR_PTR(-EFAULT);
1404 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1405 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1406 spin_lock_init(&nesqp->lock);
1407 nes_add_ref(&nesqp->ibqp);
1410 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1411 return ERR_PTR(-EINVAL);
1414 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
1416 /* update the QP table */
1417 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1418 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
1419 atomic_read(&nesvnic->netdev->refcnt));
1421 return &nesqp->ibqp;
1428 static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1434 unsigned long flags = 0;
1436 spin_lock_irqsave(&nescq->lock, flags);
1438 cq_head = nescq->hw_cq.cq_head;
1439 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1441 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1442 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1443 u64temp = (((u64)hi) << 32) | ((u64)lo);
1444 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1445 if (u64temp == (u64)(unsigned long)nesqp) {
1446 /* Zero the context value so cqe will be ignored */
1447 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1448 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1451 if (++cq_head >= nescq->hw_cq.cq_size)
1455 spin_unlock_irqrestore(&nescq->lock, flags);
1462 static int nes_destroy_qp(struct ib_qp *ibqp)
1464 struct nes_qp *nesqp = to_nesqp(ibqp);
1465 struct nes_ucontext *nes_ucontext;
1466 struct ib_qp_attr attr;
1467 struct iw_cm_id *cm_id;
1468 struct iw_cm_event cm_event;
1471 atomic_inc(&sw_qps_destroyed);
1472 nesqp->destroyed = 1;
1474 /* Blow away the connection if it exists. */
1475 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1476 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1477 attr.qp_state = IB_QPS_ERR;
1478 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1481 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1482 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1483 cm_id = nesqp->cm_id;
1484 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
1485 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT;
1486 cm_event.local_addr = cm_id->local_addr;
1487 cm_event.remote_addr = cm_id->remote_addr;
1488 cm_event.private_data = NULL;
1489 cm_event.private_data_len = 0;
1491 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1492 "QP%u. cm_id = %p, refcount = %u. \n",
1493 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1495 cm_id->rem_ref(cm_id);
1496 ret = cm_id->event_handler(cm_id, &cm_event);
1498 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1501 if (nesqp->user_mode) {
1502 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1503 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1504 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1505 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1506 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1507 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1510 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1511 nesqp->sq_kmapped = 0;
1512 kunmap(nesqp->page);
1515 /* Clean any pending completions from the cq(s) */
1517 nes_clean_cq(nesqp, nesqp->nesscq);
1519 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1520 nes_clean_cq(nesqp, nesqp->nesrcq);
1523 nes_rem_ref(&nesqp->ibqp);
1531 static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1533 struct ib_ucontext *context, struct ib_udata *udata)
1536 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1537 struct nes_device *nesdev = nesvnic->nesdev;
1538 struct nes_adapter *nesadapter = nesdev->nesadapter;
1539 struct nes_cq *nescq;
1540 struct nes_ucontext *nes_ucontext = NULL;
1541 struct nes_cqp_request *cqp_request;
1543 struct nes_hw_cqp_wqe *cqp_wqe;
1544 struct nes_pbl *nespbl = NULL;
1545 struct nes_create_cq_req req;
1546 struct nes_create_cq_resp resp;
1549 u32 pbl_entries = 1;
1551 unsigned long flags;
1554 if (entries > nesadapter->max_cqe)
1555 return ERR_PTR(-EINVAL);
1557 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
1558 nesadapter->max_cq, &cq_num, &nesadapter->next_cq);
1560 return ERR_PTR(err);
1563 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1565 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1566 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1567 return ERR_PTR(-ENOMEM);
1570 nescq->hw_cq.cq_size = max(entries + 1, 5);
1571 nescq->hw_cq.cq_number = cq_num;
1572 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1576 nes_ucontext = to_nesucontext(context);
1577 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1578 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1580 return ERR_PTR(-EFAULT);
1582 nesvnic->mcrq_ucontext = nes_ucontext;
1583 nes_ucontext->mcrqf = req.mcrqf;
1584 if (nes_ucontext->mcrqf) {
1585 if (nes_ucontext->mcrqf & 0x80000000)
1586 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
1587 else if (nes_ucontext->mcrqf & 0x40000000)
1588 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1590 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
1591 nescq->mcrqf = nes_ucontext->mcrqf;
1592 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1594 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1595 (unsigned long)req.user_cq_buffer, entries);
1597 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1598 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1599 list_del(&nespbl->list);
1601 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1607 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1609 return ERR_PTR(-EFAULT);
1612 pbl_entries = nespbl->pbl_size >> 3;
1613 nescq->cq_mem_size = 0;
1615 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1616 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1617 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1619 /* allocate the physical buffer space */
1620 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1621 &nescq->hw_cq.cq_pbase);
1623 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1624 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1626 return ERR_PTR(-ENOMEM);
1629 memset(mem, 0, nescq->cq_mem_size);
1630 nescq->hw_cq.cq_vbase = mem;
1631 nescq->hw_cq.cq_head = 0;
1632 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1633 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1634 (u32)nescq->hw_cq.cq_pbase);
1637 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1638 spin_lock_init(&nescq->lock);
1640 /* send CreateCQ request to CQP */
1641 cqp_request = nes_get_cqp_request(nesdev);
1642 if (cqp_request == NULL) {
1643 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1645 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1646 nescq->hw_cq.cq_pbase);
1648 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1649 nespbl->pbl_vbase, nespbl->pbl_pbase);
1653 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1655 return ERR_PTR(-ENOMEM);
1657 cqp_request->waiting = 1;
1658 cqp_wqe = &cqp_request->cqp_wqe;
1660 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1661 NES_CQP_CQ_CHK_OVERFLOW |
1662 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1664 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1666 if (pbl_entries != 1) {
1667 if (pbl_entries > 32) {
1669 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1670 if (nesadapter->free_4kpbl == 0) {
1671 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1672 nes_free_cqp_request(nesdev, cqp_request);
1674 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1675 nescq->hw_cq.cq_pbase);
1677 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1678 nespbl->pbl_vbase, nespbl->pbl_pbase);
1681 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1683 return ERR_PTR(-ENOMEM);
1685 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1686 nescq->virtual_cq = 2;
1687 nesadapter->free_4kpbl--;
1690 /* use 256 byte pbl */
1691 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1692 if (nesadapter->free_256pbl == 0) {
1693 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1694 nes_free_cqp_request(nesdev, cqp_request);
1696 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1697 nescq->hw_cq.cq_pbase);
1699 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1700 nespbl->pbl_vbase, nespbl->pbl_pbase);
1703 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1705 return ERR_PTR(-ENOMEM);
1707 opcode |= NES_CQP_CQ_VIRT;
1708 nescq->virtual_cq = 1;
1709 nesadapter->free_256pbl--;
1714 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1716 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1717 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1718 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1719 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1722 if (pbl_entries != 1)
1723 u64temp = (u64)nespbl->pbl_pbase;
1725 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1726 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1727 nes_ucontext->mmap_db_index[0]);
1729 u64temp = (u64)nescq->hw_cq.cq_pbase;
1730 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1732 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1733 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1734 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1735 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1736 cpu_to_le32((u32)(u64temp >> 1));
1737 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1738 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1740 atomic_set(&cqp_request->refcount, 2);
1741 nes_post_cqp_request(nesdev, cqp_request);
1744 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1745 nescq->hw_cq.cq_number);
1746 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1747 NES_EVENT_TIMEOUT * 2);
1748 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1749 nescq->hw_cq.cq_number, ret);
1750 if ((!ret) || (cqp_request->major_code)) {
1751 nes_put_cqp_request(nesdev, cqp_request);
1753 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1754 nescq->hw_cq.cq_pbase);
1756 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1757 nespbl->pbl_vbase, nespbl->pbl_pbase);
1760 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1762 return ERR_PTR(-EIO);
1764 nes_put_cqp_request(nesdev, cqp_request);
1767 /* free the nespbl */
1768 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1771 resp.cq_id = nescq->hw_cq.cq_number;
1772 resp.cq_size = nescq->hw_cq.cq_size;
1773 resp.mmap_db_index = 0;
1774 if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
1775 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1777 return ERR_PTR(-EFAULT);
1781 return &nescq->ibcq;
1788 static int nes_destroy_cq(struct ib_cq *ib_cq)
1790 struct nes_cq *nescq;
1791 struct nes_device *nesdev;
1792 struct nes_vnic *nesvnic;
1793 struct nes_adapter *nesadapter;
1794 struct nes_hw_cqp_wqe *cqp_wqe;
1795 struct nes_cqp_request *cqp_request;
1796 unsigned long flags;
1803 nescq = to_nescq(ib_cq);
1804 nesvnic = to_nesvnic(ib_cq->device);
1805 nesdev = nesvnic->nesdev;
1806 nesadapter = nesdev->nesadapter;
1808 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1810 /* Send DestroyCQ request to CQP */
1811 cqp_request = nes_get_cqp_request(nesdev);
1812 if (cqp_request == NULL) {
1813 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1816 cqp_request->waiting = 1;
1817 cqp_wqe = &cqp_request->cqp_wqe;
1818 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1819 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1820 if (nescq->virtual_cq == 1) {
1821 nesadapter->free_256pbl++;
1822 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1823 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
1824 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
1826 } else if (nescq->virtual_cq == 2) {
1827 nesadapter->free_4kpbl++;
1828 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1829 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
1830 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
1832 opcode |= NES_CQP_CQ_4KB_CHUNK;
1835 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1837 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1838 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1839 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1840 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
1842 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1844 atomic_set(&cqp_request->refcount, 2);
1845 nes_post_cqp_request(nesdev, cqp_request);
1848 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1849 nescq->hw_cq.cq_number);
1850 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1852 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1853 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1854 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1855 cqp_request->minor_code);
1857 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
1858 nescq->hw_cq.cq_number);
1860 } else if (cqp_request->major_code) {
1861 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
1862 nescq->hw_cq.cq_number);
1867 nes_put_cqp_request(nesdev, cqp_request);
1869 if (nescq->cq_mem_size)
1870 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
1871 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
1880 static u32 root_256(struct nes_device *nesdev,
1881 struct nes_root_vpbl *root_vpbl,
1882 struct nes_root_vpbl *new_root,
1888 if (pbl_count_4k == 1) {
1889 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1890 512, &new_root->pbl_pbase);
1892 if (new_root->pbl_vbase == NULL)
1895 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1896 for (i = 0; i < 16; i++) {
1897 new_root->pbl_vbase[i].pa_low =
1898 cpu_to_le32((u32)leaf_pbl);
1899 new_root->pbl_vbase[i].pa_high =
1900 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1904 for (i = 3; i >= 0; i--) {
1906 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1907 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1908 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1910 for (k = 1; k < 16; k++) {
1912 root_vpbl->pbl_vbase[j + k].pa_low =
1913 cpu_to_le32((u32)leaf_pbl);
1914 root_vpbl->pbl_vbase[j + k].pa_high =
1915 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1927 static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1928 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
1929 dma_addr_t single_buffer, u16 pbl_count_4k,
1930 u16 residual_page_count_4k, int acc, u64 *iova_start,
1931 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
1933 struct nes_hw_cqp_wqe *cqp_wqe;
1934 struct nes_cqp_request *cqp_request;
1935 unsigned long flags;
1937 struct nes_adapter *nesadapter = nesdev->nesadapter;
1939 u16 pbl_count_256 = 0;
1941 u8 use_256_pbls = 0;
1943 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
1944 struct nes_root_vpbl new_root = {0, 0, 0};
1948 /* Register the region with the adapter */
1949 cqp_request = nes_get_cqp_request(nesdev);
1950 if (cqp_request == NULL) {
1951 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1954 cqp_request->waiting = 1;
1955 cqp_wqe = &cqp_request->cqp_wqe;
1958 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1960 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1961 pbl_count_256 = (pg_cnt + 31) / 32;
1963 if (pbl_count_256 <= nesadapter->free_256pbl)
1965 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1967 } else if (pg_cnt <= 2048) {
1968 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1969 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1971 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1974 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1978 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1983 pbl_count = pbl_count_256;
1984 nesadapter->free_256pbl -= pbl_count + use_two_level;
1985 } else if (use_4k_pbls) {
1986 pbl_count = pbl_count_4k;
1987 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1989 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1990 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1991 nes_free_cqp_request(nesdev, cqp_request);
1995 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1998 if (use_256_pbls && use_two_level) {
1999 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
2000 if (new_root.pbl_pbase != 0)
2001 root_vpbl = &new_root;
2003 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2004 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2007 if (pbl_count_4k == 1)
2009 pbl_count = pbl_count_4k;
2011 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2012 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2015 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2017 if (use_4k_pbls == 0)
2022 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2023 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2024 if (acc & IB_ACCESS_LOCAL_WRITE)
2025 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2026 if (acc & IB_ACCESS_REMOTE_WRITE)
2027 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2028 if (acc & IB_ACCESS_REMOTE_READ)
2029 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2030 if (acc & IB_ACCESS_MW_BIND)
2031 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2033 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2034 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2035 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2036 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2038 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2039 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2040 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2041 cpu_to_le32(nespd->pd_id & 0x00007fff);
2042 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2044 if (pbl_count == 0) {
2045 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2047 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2048 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
2049 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
2052 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2056 atomic_set(&cqp_request->refcount, 2);
2057 nes_post_cqp_request(nesdev, cqp_request);
2060 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2062 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2063 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2064 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2065 major_code = cqp_request->major_code;
2066 nes_put_cqp_request(nesdev, cqp_request);
2068 if ((!ret || major_code) && pbl_count != 0) {
2069 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2071 nesadapter->free_256pbl += pbl_count + use_two_level;
2072 else if (use_4k_pbls)
2073 nesadapter->free_4kpbl += pbl_count + use_two_level;
2074 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2076 if (new_root.pbl_pbase)
2077 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2078 new_root.pbl_pbase);
2082 else if (major_code)
2085 *actual_pbl_cnt = pbl_count + use_two_level;
2086 *used_4k_pbls = use_4k_pbls;
2094 static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2095 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2099 struct nes_pd *nespd = to_nespd(ib_pd);
2100 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2101 struct nes_device *nesdev = nesvnic->nesdev;
2102 struct nes_adapter *nesadapter = nesdev->nesadapter;
2103 struct nes_mr *nesmr;
2105 struct nes_vpbl vpbl;
2106 struct nes_root_vpbl root_vpbl;
2111 u32 next_stag_index = 0;
2113 u32 root_pbl_index = 0;
2114 u32 cur_pbl_index = 0;
2115 int err = 0, pbl_depth = 0;
2123 vpbl.pbl_vbase = NULL;
2124 root_vpbl.pbl_vbase = NULL;
2125 root_vpbl.pbl_pbase = 0;
2127 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2128 stag_key = (u8)next_stag_index;
2132 next_stag_index >>= 8;
2133 next_stag_index %= nesadapter->max_mr;
2134 if (num_phys_buf > (1024*512)) {
2135 return ERR_PTR(-E2BIG);
2138 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2139 return ERR_PTR(-EINVAL);
2141 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
2142 &stag_index, &next_stag_index);
2144 return ERR_PTR(err);
2147 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2149 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2150 return ERR_PTR(-ENOMEM);
2153 for (i = 0; i < num_phys_buf; i++) {
2155 if ((i & 0x01FF) == 0) {
2156 if (root_pbl_index == 1) {
2157 /* Allocate the root PBL */
2158 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2159 &root_vpbl.pbl_pbase);
2160 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2161 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2162 if (!root_vpbl.pbl_vbase) {
2163 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2165 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2167 return ERR_PTR(-ENOMEM);
2169 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2170 if (!root_vpbl.leaf_vpbl) {
2171 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2172 root_vpbl.pbl_pbase);
2173 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2175 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2177 return ERR_PTR(-ENOMEM);
2179 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2180 root_vpbl.pbl_vbase[0].pa_high =
2181 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2182 root_vpbl.leaf_vpbl[0] = vpbl;
2184 /* Allocate a 4K buffer for the PBL */
2185 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2187 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2188 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2189 if (!vpbl.pbl_vbase) {
2190 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2191 ibmr = ERR_PTR(-ENOMEM);
2195 /* Fill in the root table */
2196 if (1 <= root_pbl_index) {
2197 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2198 cpu_to_le32((u32)vpbl.pbl_pbase);
2199 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2200 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2201 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2207 mask = !buffer_list[i].size;
2209 mask |= buffer_list[i].addr;
2210 if (i != num_phys_buf - 1)
2211 mask |= buffer_list[i].addr + buffer_list[i].size;
2213 if (mask & ~PAGE_MASK) {
2214 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2215 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
2216 ibmr = ERR_PTR(-EINVAL);
2221 region_length += buffer_list[i].size;
2222 if ((i != 0) && (single_page)) {
2223 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2226 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
2227 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2228 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2231 stag = stag_index << 8;
2233 stag += (u32)stag_key;
2235 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2236 " length = 0x%016lX, index = 0x%08X\n",
2237 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2239 /* Make the leaf PBL the root if only one PBL */
2240 if (root_pbl_index == 1) {
2241 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2247 pbl_count = root_pbl_index;
2249 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
2250 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2251 &nesmr->pbls_used, &nesmr->pbl_4k);
2254 nesmr->ibmr.rkey = stag;
2255 nesmr->ibmr.lkey = stag;
2256 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2257 ibmr = &nesmr->ibmr;
2260 ibmr = ERR_PTR(-ENOMEM);
2264 /* free the resources */
2265 if (root_pbl_index == 1) {
2266 /* single PBL case */
2267 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2269 for (i=0; i<root_pbl_index; i++) {
2270 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2271 root_vpbl.leaf_vpbl[i].pbl_pbase);
2273 kfree(root_vpbl.leaf_vpbl);
2274 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2275 root_vpbl.pbl_pbase);
2285 static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2287 struct ib_phys_buf bl;
2290 nes_debug(NES_DBG_MR, "\n");
2292 bl.size = (u64)0xffffffffffULL;
2294 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2301 static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2302 u64 virt, int acc, struct ib_udata *udata)
2307 dma_addr_t last_dma_addr = 0;
2308 dma_addr_t first_dma_addr = 0;
2309 struct nes_pd *nespd = to_nespd(pd);
2310 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2311 struct nes_device *nesdev = nesvnic->nesdev;
2312 struct nes_adapter *nesadapter = nesdev->nesadapter;
2313 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2314 struct ib_umem_chunk *chunk;
2315 struct nes_ucontext *nes_ucontext;
2316 struct nes_pbl *nespbl;
2317 struct nes_mr *nesmr;
2318 struct ib_umem *region;
2319 struct nes_mem_reg_req req;
2320 struct nes_vpbl vpbl;
2321 struct nes_root_vpbl root_vpbl;
2322 int nmap_index, page_index;
2324 int err, pbl_depth = 0;
2329 u32 next_stag_index;
2331 u32 root_pbl_index = 0;
2332 u32 cur_pbl_index = 0;
2338 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
2339 if (IS_ERR(region)) {
2340 return (struct ib_mr *)region;
2343 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2344 " offset = %u, page size = %u.\n",
2345 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2346 region->offset, region->page_size);
2348 skip_pages = ((u32)region->offset) >> 12;
2350 if (ib_copy_from_udata(&req, udata, sizeof(req)))
2351 return ERR_PTR(-EFAULT);
2352 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2354 switch (req.reg_type) {
2355 case IWNES_MEMREG_TYPE_MEM:
2358 vpbl.pbl_vbase = NULL;
2359 root_vpbl.pbl_vbase = NULL;
2360 root_vpbl.pbl_pbase = 0;
2362 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2363 stag_key = (u8)next_stag_index;
2365 driver_key = next_stag_index & 0x70000000;
2367 next_stag_index >>= 8;
2368 next_stag_index %= nesadapter->max_mr;
2370 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
2371 nesadapter->max_mr, &stag_index, &next_stag_index);
2373 ib_umem_release(region);
2374 return ERR_PTR(err);
2377 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2379 ib_umem_release(region);
2380 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2381 return ERR_PTR(-ENOMEM);
2383 nesmr->region = region;
2385 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2386 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2387 chunk->nents, chunk->nmap);
2388 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2389 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2390 ib_umem_release(region);
2391 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2392 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2393 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2394 ibmr = ERR_PTR(-EINVAL);
2396 goto reg_user_mr_err;
2399 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2400 ib_umem_release(region);
2401 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2403 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2404 ibmr = ERR_PTR(-EINVAL);
2406 goto reg_user_mr_err;
2409 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2410 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2411 region_length -= skip_pages << 12;
2412 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2414 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2416 if ((page_count&0x01FF) == 0) {
2417 if (page_count >= 1024 * 512) {
2418 ib_umem_release(region);
2419 nes_free_resource(nesadapter,
2420 nesadapter->allocated_mrs, stag_index);
2422 ibmr = ERR_PTR(-E2BIG);
2423 goto reg_user_mr_err;
2425 if (root_pbl_index == 1) {
2426 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2427 8192, &root_vpbl.pbl_pbase);
2428 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2429 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2430 if (!root_vpbl.pbl_vbase) {
2431 ib_umem_release(region);
2432 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2434 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2437 ibmr = ERR_PTR(-ENOMEM);
2438 goto reg_user_mr_err;
2440 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2442 if (!root_vpbl.leaf_vpbl) {
2443 ib_umem_release(region);
2444 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2445 root_vpbl.pbl_pbase);
2446 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2448 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2451 ibmr = ERR_PTR(-ENOMEM);
2452 goto reg_user_mr_err;
2454 root_vpbl.pbl_vbase[0].pa_low =
2455 cpu_to_le32((u32)vpbl.pbl_pbase);
2456 root_vpbl.pbl_vbase[0].pa_high =
2457 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2458 root_vpbl.leaf_vpbl[0] = vpbl;
2460 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2462 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2463 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2464 if (!vpbl.pbl_vbase) {
2465 ib_umem_release(region);
2466 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2467 ibmr = ERR_PTR(-ENOMEM);
2469 goto reg_user_mr_err;
2471 if (1 <= root_pbl_index) {
2472 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2473 cpu_to_le32((u32)vpbl.pbl_pbase);
2474 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2475 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2476 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2482 if (page_count != 0) {
2483 if ((last_dma_addr+4096) !=
2484 (sg_dma_address(&chunk->page_list[nmap_index])+
2487 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2490 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2492 last_dma_addr = first_dma_addr;
2496 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2497 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2498 (page_index*4096)));
2499 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2500 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2501 (page_index*4096))) >> 32)));
2508 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2509 " stag_key=0x%08x\n",
2510 stag_index, driver_key, stag_key);
2511 stag = stag_index << 8;
2513 stag += (u32)stag_key;
2516 /* Make the leaf PBL the root if only one PBL */
2517 if (root_pbl_index == 1) {
2518 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2524 pbl_count = root_pbl_index;
2527 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2528 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2529 stag, (unsigned int)iova_start,
2530 (unsigned int)region_length, stag_index,
2531 (unsigned long long)region->length, pbl_count);
2532 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2533 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2534 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
2536 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2539 nesmr->ibmr.rkey = stag;
2540 nesmr->ibmr.lkey = stag;
2541 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2542 ibmr = &nesmr->ibmr;
2544 ib_umem_release(region);
2546 ibmr = ERR_PTR(-ENOMEM);
2550 /* free the resources */
2551 if (root_pbl_index == 1) {
2552 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2555 for (page_index=0; page_index<root_pbl_index; page_index++) {
2556 pci_free_consistent(nesdev->pcidev, 4096,
2557 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2558 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2560 kfree(root_vpbl.leaf_vpbl);
2561 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2562 root_vpbl.pbl_pbase);
2565 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2568 case IWNES_MEMREG_TYPE_QP:
2569 case IWNES_MEMREG_TYPE_CQ:
2570 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2572 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2573 ib_umem_release(region);
2574 return ERR_PTR(-ENOMEM);
2576 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2578 ib_umem_release(region);
2580 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2581 return ERR_PTR(-ENOMEM);
2583 nesmr->region = region;
2584 nes_ucontext = to_nesucontext(pd->uobject->context);
2585 pbl_depth = region->length >> 12;
2586 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2587 nespbl->pbl_size = pbl_depth*sizeof(u64);
2588 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2589 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2591 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2594 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2595 nespbl->pbl_size, pbl_depth);
2596 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2597 &nespbl->pbl_pbase);
2599 ib_umem_release(region);
2602 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2603 return ERR_PTR(-ENOMEM);
2606 nespbl->pbl_vbase = (u64 *)pbl;
2607 nespbl->user_base = start;
2608 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
2609 " pbl_vbase=%p user_base=0x%lx\n",
2610 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2611 (void *) nespbl->pbl_vbase, nespbl->user_base);
2613 list_for_each_entry(chunk, ®ion->chunk_list, list) {
2614 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2615 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2616 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2617 nespbl->page = sg_page(&chunk->page_list[0]);
2618 for (page_index=0; page_index<chunk_pages; page_index++) {
2619 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2620 (sg_dma_address(&chunk->page_list[nmap_index])+
2621 (page_index*4096)));
2622 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2623 (sg_dma_address(&chunk->page_list[nmap_index])+
2624 (page_index*4096)))>>32);
2625 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2626 (unsigned long long)*pbl,
2627 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2632 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2633 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2635 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2637 nesmr->ibmr.rkey = -1;
2638 nesmr->ibmr.lkey = -1;
2639 nesmr->mode = req.reg_type;
2640 return &nesmr->ibmr;
2643 return ERR_PTR(-ENOSYS);
2650 static int nes_dereg_mr(struct ib_mr *ib_mr)
2652 struct nes_mr *nesmr = to_nesmr(ib_mr);
2653 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2654 struct nes_device *nesdev = nesvnic->nesdev;
2655 struct nes_adapter *nesadapter = nesdev->nesadapter;
2656 struct nes_hw_cqp_wqe *cqp_wqe;
2657 struct nes_cqp_request *cqp_request;
2658 unsigned long flags;
2663 if (nesmr->region) {
2664 ib_umem_release(nesmr->region);
2666 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2671 /* Deallocate the region with the adapter */
2673 cqp_request = nes_get_cqp_request(nesdev);
2674 if (cqp_request == NULL) {
2675 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2678 cqp_request->waiting = 1;
2679 cqp_wqe = &cqp_request->cqp_wqe;
2681 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2682 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2683 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2684 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2685 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2687 atomic_set(&cqp_request->refcount, 2);
2688 nes_post_cqp_request(nesdev, cqp_request);
2691 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2692 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2694 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2695 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2696 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2698 major_code = cqp_request->major_code;
2699 minor_code = cqp_request->minor_code;
2701 nes_put_cqp_request(nesdev, cqp_request);
2704 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2705 " ib_mr=%p, rkey = 0x%08X\n",
2706 ib_mr, ib_mr->rkey);
2708 } else if (major_code) {
2709 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2710 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2711 major_code, minor_code, ib_mr, ib_mr->rkey);
2715 if (nesmr->pbls_used != 0) {
2716 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2717 if (nesmr->pbl_4k) {
2718 nesadapter->free_4kpbl += nesmr->pbls_used;
2719 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2720 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2721 "exceeded the max(%u)\n",
2722 nesadapter->free_4kpbl,
2723 nesadapter->max_4kpbl);
2725 nesadapter->free_256pbl += nesmr->pbls_used;
2726 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2727 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2728 "exceeded the max(%u)\n",
2729 nesadapter->free_256pbl,
2730 nesadapter->max_256pbl);
2732 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2734 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2735 (ib_mr->rkey & 0x0fffff00) >> 8);
2746 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2749 struct nes_ib_device *nesibdev =
2750 container_of(dev, struct nes_ib_device, ibdev.dev);
2751 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2753 nes_debug(NES_DBG_INIT, "\n");
2754 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2761 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2764 struct nes_ib_device *nesibdev =
2765 container_of(dev, struct nes_ib_device, ibdev.dev);
2766 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2768 nes_debug(NES_DBG_INIT, "\n");
2769 return sprintf(buf, "%u.%u\n",
2770 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2771 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
2778 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2781 nes_debug(NES_DBG_INIT, "\n");
2782 return sprintf(buf, "NES020\n");
2789 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2792 nes_debug(NES_DBG_INIT, "\n");
2793 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2797 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2798 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2799 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2800 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
2802 static struct device_attribute *nes_dev_attributes[] = {
2813 static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2814 int attr_mask, struct ib_qp_init_attr *init_attr)
2816 struct nes_qp *nesqp = to_nesqp(ibqp);
2818 nes_debug(NES_DBG_QP, "\n");
2820 attr->qp_access_flags = 0;
2821 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2822 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2823 attr->cap.max_recv_sge = 1;
2824 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2825 attr->cap.max_inline_data = 0;
2827 attr->cap.max_inline_data = 64;
2829 init_attr->event_handler = nesqp->ibqp.event_handler;
2830 init_attr->qp_context = nesqp->ibqp.qp_context;
2831 init_attr->send_cq = nesqp->ibqp.send_cq;
2832 init_attr->recv_cq = nesqp->ibqp.recv_cq;
2833 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq;
2834 init_attr->cap = attr->cap;
2843 int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
2844 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
2846 struct nes_hw_cqp_wqe *cqp_wqe;
2847 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2848 /* struct iw_cm_event cm_event; */
2849 struct nes_cqp_request *cqp_request;
2853 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2854 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2856 cqp_request = nes_get_cqp_request(nesdev);
2857 if (cqp_request == NULL) {
2858 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2861 if (wait_completion) {
2862 cqp_request->waiting = 1;
2864 cqp_request->waiting = 0;
2866 cqp_wqe = &cqp_request->cqp_wqe;
2868 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2869 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2870 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2871 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2872 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2873 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2874 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2876 /* If sending a terminate message, fill in the length (in words) */
2877 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2878 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2879 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2880 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2883 atomic_set(&cqp_request->refcount, 2);
2884 nes_post_cqp_request(nesdev, cqp_request);
2887 if (wait_completion) {
2888 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2889 nesqp->hwqp.qp_id); */
2890 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2892 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2893 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2894 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2895 major_code = cqp_request->major_code;
2897 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2898 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2899 nesqp->hwqp.qp_id, cqp_request->major_code,
2900 cqp_request->minor_code, next_iwarp_state);
2903 nes_put_cqp_request(nesdev, cqp_request);
2907 else if (major_code)
2920 int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2921 int attr_mask, struct ib_udata *udata)
2923 struct nes_qp *nesqp = to_nesqp(ibqp);
2924 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2925 struct nes_device *nesdev = nesvnic->nesdev;
2928 u32 next_iwarp_state = 0;
2930 unsigned long qplockflags;
2932 u16 original_last_aeq;
2933 u8 issue_modify_qp = 0;
2934 u8 issue_disconnect = 0;
2937 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2938 " iwarp_state=0x%X, refcount=%d\n",
2939 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2940 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2942 spin_lock_irqsave(&nesqp->lock, qplockflags);
2944 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2945 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2946 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2947 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2949 if (attr_mask & IB_QP_STATE) {
2950 switch (attr->qp_state) {
2952 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2954 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2955 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2958 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2959 issue_modify_qp = 1;
2962 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2964 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2965 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2968 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2969 issue_modify_qp = 1;
2972 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2974 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2975 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2978 if (nesqp->cm_id == NULL) {
2979 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2980 nesqp->hwqp.qp_id );
2981 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
2984 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2985 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2986 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2987 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2988 issue_modify_qp = 1;
2989 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2990 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2991 nesqp->hte_added = 1;
2994 issue_modify_qp = 1;
2995 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2996 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2997 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2998 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3001 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3002 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3003 " ignored due to current iWARP state\n",
3005 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3008 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3009 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3010 " already done based on hw state.\n",
3012 issue_modify_qp = 0;
3014 switch (nesqp->hw_iwarp_state) {
3015 case NES_AEQE_IWARP_STATE_CLOSING:
3016 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3017 case NES_AEQE_IWARP_STATE_TERMINATE:
3018 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3020 case NES_AEQE_IWARP_STATE_ERROR:
3021 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3024 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3025 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3031 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3033 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3034 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3037 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3038 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3039 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3040 issue_modify_qp = 1;
3044 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3045 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3048 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3050 if (nesqp->term_flags)
3051 del_timer(&nesqp->terminate_timer);
3053 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3054 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3055 if (nesqp->hte_added) {
3056 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3057 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3058 nesqp->hte_added = 0;
3060 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
3061 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3062 next_iwarp_state |= NES_CQP_QP_RESET;
3064 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3065 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3068 issue_modify_qp = 1;
3069 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3072 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3077 nesqp->ibqp_state = attr->qp_state;
3078 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) ==
3079 (u32)NES_CQP_QP_IWARP_STATE_RTS) &&
3080 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) >
3081 (u32)NES_CQP_QP_IWARP_STATE_RTS)) {
3082 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3083 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3084 nesqp->iwarp_state);
3085 issue_disconnect = 1;
3087 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3088 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3089 nesqp->iwarp_state);
3093 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3094 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3095 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3096 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3097 issue_modify_qp = 1;
3099 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3100 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3101 issue_modify_qp = 1;
3103 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3104 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3105 issue_modify_qp = 1;
3107 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3108 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3109 issue_modify_qp = 1;
3112 if (nesqp->user_mode) {
3113 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3114 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3115 issue_modify_qp = 1;
3119 original_last_aeq = nesqp->last_aeq;
3120 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3122 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3127 if (issue_modify_qp) {
3128 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
3129 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3131 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3132 " failed for QP%u.\n",
3133 next_iwarp_state, nesqp->hwqp.qp_id);
3137 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3138 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3139 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3140 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3141 original_last_aeq, nesqp->last_aeq);
3143 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3146 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3147 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3148 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3149 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3150 original_last_aeq, nesqp->last_aeq);
3151 /* this one is for the cm_disconnect thread */
3152 spin_lock_irqsave(&nesqp->lock, qplockflags);
3153 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3154 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3155 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3156 nes_cm_disconn(nesqp);
3158 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3159 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3162 spin_lock_irqsave(&nesqp->lock, qplockflags);
3164 /* These two are for the timer thread */
3165 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3166 nesqp->cm_id->add_ref(nesqp->cm_id);
3167 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3168 " need ae to finish up, original_last_aeq = 0x%04X."
3169 " last_aeq = 0x%04X, scheduling timer.\n",
3170 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3171 original_last_aeq, nesqp->last_aeq);
3172 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3174 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3176 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3177 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3178 " need ae to finish up, original_last_aeq = 0x%04X."
3179 " last_aeq = 0x%04X.\n",
3180 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3181 original_last_aeq, nesqp->last_aeq);
3185 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3186 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3187 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3188 original_last_aeq, nesqp->last_aeq);
3191 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3192 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3193 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3194 original_last_aeq, nesqp->last_aeq);
3199 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3200 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3207 * nes_muticast_attach
3209 static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3211 nes_debug(NES_DBG_INIT, "\n");
3217 * nes_multicast_detach
3219 static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3221 nes_debug(NES_DBG_INIT, "\n");
3229 static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3230 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3231 struct ib_mad *in_mad, struct ib_mad *out_mad)
3233 nes_debug(NES_DBG_INIT, "\n");
3238 fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3241 int total_payload_length = 0;
3242 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3243 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3244 ib_wr->sg_list[sge_index].addr);
3245 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3246 ib_wr->sg_list[sge_index].length);
3248 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3249 (ib_wr->sg_list[sge_index].lkey));
3251 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3253 total_payload_length += ib_wr->sg_list[sge_index].length;
3255 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3256 total_payload_length);
3257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3258 total_payload_length);
3264 static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3265 struct ib_send_wr **bad_wr)
3268 unsigned long flags = 0;
3269 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3270 struct nes_device *nesdev = nesvnic->nesdev;
3271 struct nes_qp *nesqp = to_nesqp(ibqp);
3272 struct nes_hw_qp_wqe *wqe;
3274 u32 qsize = nesqp->hwqp.sq_size;
3280 if (nesqp->ibqp_state > IB_QPS_RTS) {
3285 spin_lock_irqsave(&nesqp->lock, flags);
3287 head = nesqp->hwqp.sq_head;
3290 /* Check for QP error */
3291 if (nesqp->term_flags) {
3296 /* Check for SQ overflow */
3297 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
3302 wqe = &nesqp->hwqp.sq_vbase[head];
3303 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3304 nesqp->hwqp.qp_id, wqe, head); */
3305 nes_fill_init_qp_wqe(wqe, nesqp, head);
3306 u64temp = (u64)(ib_wr->wr_id);
3307 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3309 switch (ib_wr->opcode) {
3311 case IB_WR_SEND_WITH_INV:
3312 if (IB_WR_SEND == ib_wr->opcode) {
3313 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3314 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3316 wqe_misc = NES_IWARP_SQ_OP_SEND;
3318 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3319 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3321 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3323 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3324 ib_wr->ex.invalidate_rkey);
3327 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3332 if (ib_wr->send_flags & IB_SEND_FENCE)
3333 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3335 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3336 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3337 (ib_wr->sg_list[0].length <= 64)) {
3338 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3339 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3340 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3341 ib_wr->sg_list[0].length);
3342 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3344 fill_wqe_sg_send(wqe, ib_wr, 1);
3348 case IB_WR_RDMA_WRITE:
3349 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3350 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3351 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3352 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3357 if (ib_wr->send_flags & IB_SEND_FENCE)
3358 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3360 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3361 ib_wr->wr.rdma.rkey);
3362 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3363 ib_wr->wr.rdma.remote_addr);
3365 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3366 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3367 (ib_wr->sg_list[0].length <= 64)) {
3368 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3369 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3370 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3371 ib_wr->sg_list[0].length);
3372 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3374 fill_wqe_sg_send(wqe, ib_wr, 1);
3377 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3378 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3380 case IB_WR_RDMA_READ:
3381 case IB_WR_RDMA_READ_WITH_INV:
3382 /* iWARP only supports 1 sge for RDMA reads */
3383 if (ib_wr->num_sge > 1) {
3384 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3389 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3390 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3392 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3393 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3394 ib_wr->ex.invalidate_rkey);
3397 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3398 ib_wr->wr.rdma.remote_addr);
3399 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3400 ib_wr->wr.rdma.rkey);
3401 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3402 ib_wr->sg_list->length);
3403 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3404 ib_wr->sg_list->addr);
3405 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3406 ib_wr->sg_list->lkey);
3408 case IB_WR_LOCAL_INV:
3409 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3410 set_wqe_32bit_value(wqe->wqe_words,
3411 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3412 ib_wr->ex.invalidate_rkey);
3414 case IB_WR_FAST_REG_MR:
3417 int flags = ib_wr->wr.fast_reg.access_flags;
3418 struct nes_ib_fast_reg_page_list *pnesfrpl =
3419 container_of(ib_wr->wr.fast_reg.page_list,
3420 struct nes_ib_fast_reg_page_list,
3422 u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
3423 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
3425 if (ib_wr->wr.fast_reg.page_list_len >
3426 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3427 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3431 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3432 set_wqe_64bit_value(wqe->wqe_words,
3433 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3434 ib_wr->wr.fast_reg.iova_start);
3435 set_wqe_32bit_value(wqe->wqe_words,
3436 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3437 ib_wr->wr.fast_reg.length);
3438 set_wqe_32bit_value(wqe->wqe_words,
3439 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3440 ib_wr->wr.fast_reg.rkey);
3441 /* Set page size: */
3442 if (ib_wr->wr.fast_reg.page_shift == 12) {
3443 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3444 } else if (ib_wr->wr.fast_reg.page_shift == 21) {
3445 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3447 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3448 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3452 /* Set access_flags */
3453 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3454 if (flags & IB_ACCESS_LOCAL_WRITE)
3455 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3457 if (flags & IB_ACCESS_REMOTE_WRITE)
3458 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3460 if (flags & IB_ACCESS_REMOTE_READ)
3461 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3463 if (flags & IB_ACCESS_MW_BIND)
3464 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3466 /* Fill in PBL info: */
3467 if (ib_wr->wr.fast_reg.page_list_len >
3468 pnesfrpl->ibfrpl.max_page_list_len) {
3469 nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
3470 " ib_wr=%p, value=%u, max=%u\n",
3471 ib_wr, ib_wr->wr.fast_reg.page_list_len,
3472 pnesfrpl->ibfrpl.max_page_list_len);
3477 set_wqe_64bit_value(wqe->wqe_words,
3478 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3479 pnesfrpl->nes_wqe_pbl.paddr);
3481 set_wqe_32bit_value(wqe->wqe_words,
3482 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3483 ib_wr->wr.fast_reg.page_list_len * 8);
3485 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++)
3486 dst_page_list[i] = cpu_to_le64(src_page_list[i]);
3488 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %p, "
3489 "length: %d, rkey: %0x, pgl_paddr: %p, "
3490 "page_list_len: %u, wqe_misc: %x\n",
3491 (void *)ib_wr->wr.fast_reg.iova_start,
3492 ib_wr->wr.fast_reg.length,
3493 ib_wr->wr.fast_reg.rkey,
3494 (void *)pnesfrpl->nes_wqe_pbl.paddr,
3495 ib_wr->wr.fast_reg.page_list_len,
3508 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3509 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
3511 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3513 ib_wr = ib_wr->next;
3521 nesqp->hwqp.sq_head = head;
3524 counter = min(wqe_count, ((u32)255));
3525 wqe_count -= counter;
3526 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3527 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3530 spin_unlock_irqrestore(&nesqp->lock, flags);
3542 static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3543 struct ib_recv_wr **bad_wr)
3546 unsigned long flags = 0;
3547 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3548 struct nes_device *nesdev = nesvnic->nesdev;
3549 struct nes_qp *nesqp = to_nesqp(ibqp);
3550 struct nes_hw_qp_wqe *wqe;
3553 u32 qsize = nesqp->hwqp.rq_size;
3557 u32 total_payload_length;
3559 if (nesqp->ibqp_state > IB_QPS_RTS) {
3564 spin_lock_irqsave(&nesqp->lock, flags);
3566 head = nesqp->hwqp.rq_head;
3569 /* Check for QP error */
3570 if (nesqp->term_flags) {
3575 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3579 /* Check for RQ overflow */
3580 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
3585 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3586 wqe = &nesqp->hwqp.rq_vbase[head];
3588 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3589 nesqp->hwqp.qp_id, wqe, head); */
3590 nes_fill_init_qp_wqe(wqe, nesqp, head);
3591 u64temp = (u64)(ib_wr->wr_id);
3592 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3594 total_payload_length = 0;
3595 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3596 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3597 ib_wr->sg_list[sge_index].addr);
3598 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3599 ib_wr->sg_list[sge_index].length);
3600 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3601 ib_wr->sg_list[sge_index].lkey);
3603 total_payload_length += ib_wr->sg_list[sge_index].length;
3605 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3606 total_payload_length);
3608 ib_wr = ib_wr->next;
3615 nesqp->hwqp.rq_head = head;
3618 counter = min(wqe_count, ((u32)255));
3619 wqe_count -= counter;
3620 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3623 spin_unlock_irqrestore(&nesqp->lock, flags);
3635 static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3639 unsigned long flags = 0;
3640 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3641 struct nes_device *nesdev = nesvnic->nesdev;
3642 struct nes_cq *nescq = to_nescq(ibcq);
3643 struct nes_qp *nesqp;
3644 struct nes_hw_cqe cqe;
3651 u32 move_cq_head = 1;
3654 nes_debug(NES_DBG_CQ, "\n");
3656 spin_lock_irqsave(&nescq->lock, flags);
3658 head = nescq->hw_cq.cq_head;
3659 cq_size = nescq->hw_cq.cq_size;
3661 while (cqe_count < num_entries) {
3662 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3663 NES_CQE_VALID) == 0)
3667 * Make sure we read CQ entry contents *after*
3668 * we've checked the valid bit.
3672 cqe = nescq->hw_cq.cq_vbase[head];
3673 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3674 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3675 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3676 /* parse CQE, get completion context from WQE (either rq or sq) */
3677 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3681 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3682 memset(entry, 0, sizeof *entry);
3683 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3684 entry->status = IB_WC_SUCCESS;
3686 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3687 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3688 entry->status = err_code & 0x0000ffff;
3690 /* The rest of the cqe's will be marked as flushed */
3691 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3692 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3693 NES_IWARP_CQE_MINOR_FLUSH);
3695 entry->status = IB_WC_WR_FLUSH_ERR;
3698 entry->qp = &nesqp->ibqp;
3699 entry->src_qp = nesqp->hwqp.qp_id;
3701 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3702 if (nesqp->skip_lsmm) {
3703 nesqp->skip_lsmm = 0;
3704 nesqp->hwqp.sq_tail++;
3707 /* Working on a SQ Completion*/
3708 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3709 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
3710 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3711 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
3712 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3713 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3715 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3716 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3717 case NES_IWARP_SQ_OP_RDMAW:
3718 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3719 entry->opcode = IB_WC_RDMA_WRITE;
3721 case NES_IWARP_SQ_OP_RDMAR:
3722 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3723 entry->opcode = IB_WC_RDMA_READ;
3724 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3725 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3727 case NES_IWARP_SQ_OP_SENDINV:
3728 case NES_IWARP_SQ_OP_SENDSEINV:
3729 case NES_IWARP_SQ_OP_SEND:
3730 case NES_IWARP_SQ_OP_SENDSE:
3731 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3732 entry->opcode = IB_WC_SEND;
3734 case NES_IWARP_SQ_OP_LOCINV:
3735 entry->opcode = IB_WR_LOCAL_INV;
3737 case NES_IWARP_SQ_OP_FAST_REG:
3738 entry->opcode = IB_WC_FAST_REG_MR;
3742 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3743 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3745 wq_tail = nesqp->hwqp.sq_tail;
3748 /* Working on a RQ Completion*/
3749 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
3750 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3751 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3752 entry->opcode = IB_WC_RECV;
3754 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3755 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3757 wq_tail = nesqp->hwqp.rq_tail;
3761 entry->wr_id = wrid;
3767 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3768 if (++head >= cq_size)
3770 nescq->polled_completions++;
3772 if ((nescq->polled_completions > (cq_size / 2)) ||
3773 (nescq->polled_completions == 255)) {
3774 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
3775 " are pending %u of %u.\n",
3776 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
3777 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3778 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3779 nescq->polled_completions = 0;
3782 /* Update the wqe index and set status to flush */
3783 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3784 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3785 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3786 cpu_to_le32(wqe_index);
3787 move_cq_head = 1; /* ready for next pass */
3791 if (nescq->polled_completions) {
3792 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3793 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3794 nescq->polled_completions = 0;
3797 nescq->hw_cq.cq_head = head;
3798 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3799 cqe_count, nescq->hw_cq.cq_number);
3801 spin_unlock_irqrestore(&nescq->lock, flags);
3810 static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3812 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3813 struct nes_device *nesdev = nesvnic->nesdev;
3814 struct nes_cq *nescq = to_nescq(ibcq);
3817 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3818 nescq->hw_cq.cq_number);
3820 cq_arm = nescq->hw_cq.cq_number;
3821 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3822 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3823 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3824 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3828 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3829 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3836 * nes_init_ofa_device
3838 struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3840 struct nes_ib_device *nesibdev;
3841 struct nes_vnic *nesvnic = netdev_priv(netdev);
3842 struct nes_device *nesdev = nesvnic->nesdev;
3844 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3845 if (nesibdev == NULL) {
3848 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3849 nesibdev->ibdev.owner = THIS_MODULE;
3851 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3852 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3853 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3855 nesibdev->ibdev.uverbs_cmd_mask =
3856 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3857 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3858 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3859 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3860 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3861 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3862 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3863 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3864 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3865 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3866 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3867 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3868 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3869 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3870 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3871 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3872 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3873 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3874 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3875 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3876 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3877 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3879 nesibdev->ibdev.phys_port_cnt = 1;
3880 nesibdev->ibdev.num_comp_vectors = 1;
3881 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
3882 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3883 nesibdev->ibdev.query_device = nes_query_device;
3884 nesibdev->ibdev.query_port = nes_query_port;
3885 nesibdev->ibdev.modify_port = nes_modify_port;
3886 nesibdev->ibdev.query_pkey = nes_query_pkey;
3887 nesibdev->ibdev.query_gid = nes_query_gid;
3888 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3889 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3890 nesibdev->ibdev.mmap = nes_mmap;
3891 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3892 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3893 nesibdev->ibdev.create_ah = nes_create_ah;
3894 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3895 nesibdev->ibdev.create_qp = nes_create_qp;
3896 nesibdev->ibdev.modify_qp = nes_modify_qp;
3897 nesibdev->ibdev.query_qp = nes_query_qp;
3898 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3899 nesibdev->ibdev.create_cq = nes_create_cq;
3900 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3901 nesibdev->ibdev.poll_cq = nes_poll_cq;
3902 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3903 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3904 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3905 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3906 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3907 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3908 nesibdev->ibdev.bind_mw = nes_bind_mw;
3910 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr;
3911 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
3912 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
3914 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3915 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3916 nesibdev->ibdev.process_mad = nes_process_mad;
3918 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3919 nesibdev->ibdev.post_send = nes_post_send;
3920 nesibdev->ibdev.post_recv = nes_post_recv;
3922 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3923 if (nesibdev->ibdev.iwcm == NULL) {
3924 ib_dealloc_device(&nesibdev->ibdev);
3927 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3928 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3929 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3930 nesibdev->ibdev.iwcm->connect = nes_connect;
3931 nesibdev->ibdev.iwcm->accept = nes_accept;
3932 nesibdev->ibdev.iwcm->reject = nes_reject;
3933 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3934 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3941 * nes_destroy_ofa_device
3943 void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3945 if (nesibdev == NULL)
3948 nes_unregister_ofa_device(nesibdev);
3950 kfree(nesibdev->ibdev.iwcm);
3951 ib_dealloc_device(&nesibdev->ibdev);
3956 * nes_register_ofa_device
3958 int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3960 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3961 struct nes_device *nesdev = nesvnic->nesdev;
3962 struct nes_adapter *nesadapter = nesdev->nesadapter;
3965 ret = ib_register_device(&nesvnic->nesibdev->ibdev);
3970 /* Get the resources allocated to this device */
3971 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3972 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3973 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3974 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3976 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3977 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3981 device_remove_file(&nesibdev->ibdev.dev,
3982 nes_dev_attributes[i]);
3984 ib_unregister_device(&nesibdev->ibdev);
3989 nesvnic->of_device_registered = 1;
3996 * nes_unregister_ofa_device
3998 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
4000 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4003 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4004 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
4007 if (nesvnic->of_device_registered) {
4008 ib_unregister_device(&nesibdev->ibdev);
4011 nesvnic->of_device_registered = 0;