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Linux 3.14-rc4
[deliverable/linux.git] / drivers / infiniband / hw / nes / nes_verbs.c
CommitLineData
3c2d774c 1/*
c5488c57 2 * Copyright (c) 2006 - 2011 Intel Corporation. All rights reserved.
3c2d774c
GS		 3 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 *
32 */
33
34#include <linux/module.h>
35#include <linux/moduleparam.h>
36#include <linux/random.h>
37#include <linux/highmem.h>
5a0e3ad6 38#include <linux/slab.h>
3c2d774c
GS		 39#include <asm/byteorder.h>
40
41#include <rdma/ib_verbs.h>
42#include <rdma/iw_cm.h>
43#include <rdma/ib_user_verbs.h>
44
45#include "nes.h"
46
47#include <rdma/ib_umem.h>
48
49atomic_t mod_qp_timouts;
50atomic_t qps_created;
51atomic_t sw_qps_destroyed;
52
1a855fbf 53static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
3c2d774c
GS		 54
55/**
56 * nes_alloc_mw
57 */
7083e42e
SM		 58static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type)
59{
3c2d774c
GS		 60 struct nes_pd *nespd = to_nespd(ibpd);
61 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
62 struct nes_device *nesdev = nesvnic->nesdev;
63 struct nes_adapter *nesadapter = nesdev->nesadapter;
64 struct nes_cqp_request *cqp_request;
65 struct nes_mr *nesmr;
66 struct ib_mw *ibmw;
67 struct nes_hw_cqp_wqe *cqp_wqe;
68 int ret;
69 u32 stag;
70 u32 stag_index = 0;
71 u32 next_stag_index = 0;
72 u32 driver_key = 0;
73 u8 stag_key = 0;
74
7083e42e
SM		 75 if (type != IB_MW_TYPE_1)
76 return ERR_PTR(-EINVAL);
77
3c2d774c
GS		 78 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
79 stag_key = (u8)next_stag_index;
80
81 driver_key = 0;
82
83 next_stag_index >>= 8;
84 next_stag_index %= nesadapter->max_mr;
85
86 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
81821644 87 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_MW);
3c2d774c
GS		 88 if (ret) {
89 return ERR_PTR(ret);
90 }
91
92 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
93 if (!nesmr) {
94 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
95 return ERR_PTR(-ENOMEM);
96 }
97
98 stag = stag_index << 8;
99 stag |= driver_key;
100 stag += (u32)stag_key;
101
102 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
103 stag, stag_index);
104
105 /* Register the region with the adapter */
106 cqp_request = nes_get_cqp_request(nesdev);
107 if (cqp_request == NULL) {
108 kfree(nesmr);
109 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
110 return ERR_PTR(-ENOMEM);
111 }
112
113 cqp_request->waiting = 1;
114 cqp_wqe = &cqp_request->cqp_wqe;
115
116 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
117 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
118 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
119 NES_CQP_STAG_REM_ACC_EN);
120
121 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
122 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
123 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
124
125 atomic_set(&cqp_request->refcount, 2);
8294f297 126 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 127
128 /* Wait for CQP */
129 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
130 NES_EVENT_TIMEOUT);
131 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
132 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
133 stag, ret, cqp_request->major_code, cqp_request->minor_code);
134 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 135 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 136 kfree(nesmr);
137 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
138 if (!ret) {
139 return ERR_PTR(-ETIME);
140 } else {
141 return ERR_PTR(-ENOMEM);
142 }
3c2d774c 143 }
1ff66e8c 144 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 145
146 nesmr->ibmw.rkey = stag;
147 nesmr->mode = IWNES_MEMREG_TYPE_MW;
148 ibmw = &nesmr->ibmw;
149 nesmr->pbl_4k = 0;
150 nesmr->pbls_used = 0;
151
152 return ibmw;
153}
154
155
156/**
157 * nes_dealloc_mw
158 */
159static int nes_dealloc_mw(struct ib_mw *ibmw)
160{
161 struct nes_mr *nesmr = to_nesmw(ibmw);
162 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
163 struct nes_device *nesdev = nesvnic->nesdev;
164 struct nes_adapter *nesadapter = nesdev->nesadapter;
165 struct nes_hw_cqp_wqe *cqp_wqe;
166 struct nes_cqp_request *cqp_request;
167 int err = 0;
3c2d774c
GS		 168 int ret;
169
170 /* Deallocate the window with the adapter */
171 cqp_request = nes_get_cqp_request(nesdev);
172 if (cqp_request == NULL) {
173 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
174 return -ENOMEM;
175 }
176 cqp_request->waiting = 1;
177 cqp_wqe = &cqp_request->cqp_wqe;
178 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
179 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
180 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
181
182 atomic_set(&cqp_request->refcount, 2);
8294f297 183 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 184
185 /* Wait for CQP */
186 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
187 ibmw->rkey);
188 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
189 NES_EVENT_TIMEOUT);
190 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
191 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
192 ret, cqp_request->major_code, cqp_request->minor_code);
1ff66e8c
RD		 193 if (!ret)
194 err = -ETIME;
195 else if (cqp_request->major_code)
196 err = -EIO;
197
198 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 199
200 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
201 (ibmw->rkey & 0x0fffff00) >> 8);
202 kfree(nesmr);
203
204 return err;
205}
206
207
208/**
209 * nes_bind_mw
210 */
211static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw,
212 struct ib_mw_bind *ibmw_bind)
213{
214 u64 u64temp;
215 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
216 struct nes_device *nesdev = nesvnic->nesdev;
217 /* struct nes_mr *nesmr = to_nesmw(ibmw); */
218 struct nes_qp *nesqp = to_nesqp(ibqp);
219 struct nes_hw_qp_wqe *wqe;
220 unsigned long flags = 0;
221 u32 head;
222 u32 wqe_misc = 0;
223 u32 qsize;
224
225 if (nesqp->ibqp_state > IB_QPS_RTS)
226 return -EINVAL;
227
5880ff19 228 spin_lock_irqsave(&nesqp->lock, flags);
3c2d774c
GS		 229
230 head = nesqp->hwqp.sq_head;
231 qsize = nesqp->hwqp.sq_tail;
232
233 /* Check for SQ overflow */
234 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
5880ff19 235 spin_unlock_irqrestore(&nesqp->lock, flags);
831d06cf 236 return -ENOMEM;
3c2d774c
GS		 237 }
238
239 wqe = &nesqp->hwqp.sq_vbase[head];
240 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */
241 nes_fill_init_qp_wqe(wqe, nesqp, head);
242 u64temp = ibmw_bind->wr_id;
243 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp);
244 wqe_misc = NES_IWARP_SQ_OP_BIND;
245
246 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
247
248 if (ibmw_bind->send_flags & IB_SEND_SIGNALED)
249 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
250
7083e42e 251 if (ibmw_bind->bind_info.mw_access_flags & IB_ACCESS_REMOTE_WRITE)
3c2d774c 252 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE;
7083e42e 253 if (ibmw_bind->bind_info.mw_access_flags & IB_ACCESS_REMOTE_READ)
3c2d774c 254 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ;
3c2d774c
GS		 255
256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc);
7083e42e
SM		 257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX,
258 ibmw_bind->bind_info.mr->lkey);
3c2d774c
GS		 259 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey);
260 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX,
7083e42e 261 ibmw_bind->bind_info.length);
3c2d774c 262 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0;
7083e42e 263 u64temp = (u64)ibmw_bind->bind_info.addr;
3c2d774c
GS		 264 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp);
265
266 head++;
267 if (head >= qsize)
268 head = 0;
269
270 nesqp->hwqp.sq_head = head;
271 barrier();
272
273 nes_write32(nesdev->regs+NES_WQE_ALLOC,
274 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id);
275
5880ff19 276 spin_unlock_irqrestore(&nesqp->lock, flags);
3c2d774c
GS		 277
278 return 0;
279}
280
281
e293a26f
CT		 282/*
283 * nes_alloc_fast_mr
3c2d774c 284 */
e293a26f
CT		 285static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
286 u32 stag, u32 page_count)
3c2d774c 287{
3c2d774c 288 struct nes_hw_cqp_wqe *cqp_wqe;
e293a26f
CT		 289 struct nes_cqp_request *cqp_request;
290 unsigned long flags;
3c2d774c 291 int ret;
e293a26f 292 struct nes_adapter *nesadapter = nesdev->nesadapter;
3c2d774c 293 u32 opcode = 0;
e293a26f
CT		 294 u16 major_code;
295 u64 region_length = page_count * PAGE_SIZE;
3c2d774c 296
3c2d774c 297
3c2d774c
GS		 298 cqp_request = nes_get_cqp_request(nesdev);
299 if (cqp_request == NULL) {
300 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
e293a26f 301 return -ENOMEM;
3c2d774c 302 }
e293a26f
CT		 303 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
304 "region_length = %llu\n",
305 page_count, region_length);
3c2d774c
GS		 306 cqp_request->waiting = 1;
307 cqp_wqe = &cqp_request->cqp_wqe;
308
e293a26f
CT		 309 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
310 if (nesadapter->free_4kpbl > 0) {
311 nesadapter->free_4kpbl--;
312 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
313 } else {
314 /* No 4kpbl's available: */
315 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
316 nes_debug(NES_DBG_MR, "Out of Pbls\n");
317 nes_free_cqp_request(nesdev, cqp_request);
318 return -ENOMEM;
3c2d774c
GS		 319 }
320
e293a26f
CT		 321 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
322 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
323 NES_CQP_STAG_REM_ACC_EN;
324 /*
325 * The current OFED API does not support the zero based TO option.
326 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
327 * the API does not support that ability to have the MR set for local
328 * access only when created and not allow the SQ op to override. Given
329 * this the remote enable must be set here.
330 */
3c2d774c
GS		 331
332 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
333 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
e293a26f 334 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
3c2d774c 335
e293a26f
CT		 336 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
337 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
338 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
339 cpu_to_le32(nespd->pd_id & 0x00007fff);
340
341 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
342 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
343 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
344 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
345 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
346 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
347 barrier();
3c2d774c
GS		 348
349 atomic_set(&cqp_request->refcount, 2);
8294f297 350 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 351
352 /* Wait for CQP */
e293a26f
CT		 353 ret = wait_event_timeout(cqp_request->waitq,
354 (0 != cqp_request->request_done),
355 NES_EVENT_TIMEOUT);
356
357 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
358 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
359 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
360 cqp_request->minor_code);
361 major_code = cqp_request->major_code;
1ff66e8c 362 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c 363
e293a26f 364 if (!ret || major_code) {
35c6d694 365 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
e293a26f 366 nesadapter->free_4kpbl++;
35c6d694
CT		 367 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
368 }
369
e293a26f
CT		 370 if (!ret)
371 return -ETIME;
372 else if (major_code)
373 return -EIO;
374 return 0;
3c2d774c
GS		 375}
376
e293a26f
CT		 377/*
378 * nes_alloc_fast_reg_mr
3c2d774c 379 */
53978b46 380static struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int max_page_list_len)
3c2d774c 381{
e293a26f
CT		 382 struct nes_pd *nespd = to_nespd(ibpd);
383 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
3c2d774c 384 struct nes_device *nesdev = nesvnic->nesdev;
35c6d694 385 struct nes_adapter *nesadapter = nesdev->nesadapter;
3c2d774c 386
e293a26f
CT		 387 u32 next_stag_index;
388 u8 stag_key = 0;
389 u32 driver_key = 0;
390 int err = 0;
391 u32 stag_index = 0;
392 struct nes_mr *nesmr;
393 u32 stag;
394 int ret;
395 struct ib_mr *ibmr;
396/*
397 * Note: Set to always use a fixed length single page entry PBL. This is to allow
398 * for the fast_reg_mr operation to always know the size of the PBL.
399 */
400 if (max_page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
401 return ERR_PTR(-E2BIG);
35c6d694 402
e293a26f
CT		 403 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
404 stag_key = (u8)next_stag_index;
405 next_stag_index >>= 8;
406 next_stag_index %= nesadapter->max_mr;
dae5d13a 407
e293a26f
CT		 408 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
409 nesadapter->max_mr, &stag_index,
81821644 410 &next_stag_index, NES_RESOURCE_FAST_MR);
e293a26f
CT		 411 if (err)
412 return ERR_PTR(err);
413
414 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
415 if (!nesmr) {
416 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
417 return ERR_PTR(-ENOMEM);
35c6d694 418 }
3c2d774c 419
e293a26f
CT		 420 stag = stag_index << 8;
421 stag |= driver_key;
422 stag += (u32)stag_key;
3c2d774c 423
e293a26f
CT		 424 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
425 stag, stag_index);
3c2d774c 426
e293a26f
CT		 427 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_page_list_len);
428
429 if (ret == 0) {
430 nesmr->ibmr.rkey = stag;
431 nesmr->ibmr.lkey = stag;
432 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
433 ibmr = &nesmr->ibmr;
434 } else {
435 kfree(nesmr);
436 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
437 ibmr = ERR_PTR(-ENOMEM);
438 }
439 return ibmr;
440}
441
442/*
443 * nes_alloc_fast_reg_page_list
3c2d774c 444 */
e293a26f
CT		 445static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list(
446 struct ib_device *ibdev,
447 int page_list_len)
3c2d774c 448{
e293a26f
CT		 449 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
450 struct nes_device *nesdev = nesvnic->nesdev;
451 struct ib_fast_reg_page_list *pifrpl;
452 struct nes_ib_fast_reg_page_list *pnesfrpl;
3c2d774c 453
e293a26f
CT		 454 if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
455 return ERR_PTR(-E2BIG);
456 /*
457 * Allocate the ib_fast_reg_page_list structure, the
458 * nes_fast_bpl structure, and the PLB table.
459 */
460 pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) +
461 page_list_len * sizeof(u64), GFP_KERNEL);
462
463 if (!pnesfrpl)
464 return ERR_PTR(-ENOMEM);
3c2d774c 465
e293a26f
CT		 466 pifrpl = &pnesfrpl->ibfrpl;
467 pifrpl->page_list = &pnesfrpl->pbl;
468 pifrpl->max_page_list_len = page_list_len;
469 /*
470 * Allocate the WQE PBL
471 */
472 pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev,
473 page_list_len * sizeof(u64),
474 &pnesfrpl->nes_wqe_pbl.paddr);
475
476 if (!pnesfrpl->nes_wqe_pbl.kva) {
477 kfree(pnesfrpl);
478 return ERR_PTR(-ENOMEM);
479 }
480 nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, "
481 "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, "
183ae74b 482 "pbl.paddr = %llx\n", pnesfrpl, &pnesfrpl->ibfrpl,
e293a26f 483 pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva,
183ae74b 484 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr);
e293a26f
CT		 485
486 return pifrpl;
487}
488
489/*
490 * nes_free_fast_reg_page_list
3c2d774c 491 */
e293a26f 492static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl)
3c2d774c 493{
e293a26f
CT		 494 struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device);
495 struct nes_device *nesdev = nesvnic->nesdev;
496 struct nes_ib_fast_reg_page_list *pnesfrpl;
497
498 pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl);
499 /*
500 * Free the WQE PBL.
501 */
502 pci_free_consistent(nesdev->pcidev,
503 pifrpl->max_page_list_len * sizeof(u64),
504 pnesfrpl->nes_wqe_pbl.kva,
505 pnesfrpl->nes_wqe_pbl.paddr);
506 /*
507 * Free the PBL structure
508 */
509 kfree(pnesfrpl);
3c2d774c
GS		 510}
511
3c2d774c
GS		 512/**
513 * nes_query_device
514 */
515static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
516{
517 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
518 struct nes_device *nesdev = nesvnic->nesdev;
519 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
520
521 memset(props, 0, sizeof(*props));
522 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
523
ff0380ce 524 props->fw_ver = nesdev->nesadapter->firmware_version;
3c2d774c
GS		 525 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
526 props->vendor_id = nesdev->nesadapter->vendor_id;
527 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
528 props->hw_ver = nesdev->nesadapter->hw_rev;
529 props->max_mr_size = 0x80000000;
530 props->max_qp = nesibdev->max_qp;
531 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
532 props->max_sge = nesdev->nesadapter->max_sge;
533 props->max_cq = nesibdev->max_cq;
5924aea6 534 props->max_cqe = nesdev->nesadapter->max_cqe;
3c2d774c
GS		 535 props->max_mr = nesibdev->max_mr;
536 props->max_mw = nesibdev->max_mr;
537 props->max_pd = nesibdev->max_pd;
538 props->max_sge_rd = 1;
539 switch (nesdev->nesadapter->max_irrq_wr) {
540 case 0:
8ac7f6e1 541 props->max_qp_rd_atom = 2;
3c2d774c
GS		 542 break;
543 case 1:
8ac7f6e1 544 props->max_qp_rd_atom = 8;
3c2d774c
GS		 545 break;
546 case 2:
8ac7f6e1 547 props->max_qp_rd_atom = 32;
3c2d774c
GS		 548 break;
549 case 3:
8ac7f6e1 550 props->max_qp_rd_atom = 64;
3c2d774c
GS		 551 break;
552 default:
553 props->max_qp_rd_atom = 0;
554 }
66388d67 555 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
3c2d774c
GS		 556 props->atomic_cap = IB_ATOMIC_NONE;
557 props->max_map_per_fmr = 1;
558
559 return 0;
560}
561
562
563/**
564 * nes_query_port
565 */
566static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
567{
cd1d3f7a
CT		 568 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
569 struct net_device *netdev = nesvnic->netdev;
570
3c2d774c
GS		 571 memset(props, 0, sizeof(*props));
572
cd1d3f7a
CT		 573 props->max_mtu = IB_MTU_4096;
574
575 if (netdev->mtu >= 4096)
576 props->active_mtu = IB_MTU_4096;
577 else if (netdev->mtu >= 2048)
578 props->active_mtu = IB_MTU_2048;
579 else if (netdev->mtu >= 1024)
580 props->active_mtu = IB_MTU_1024;
581 else if (netdev->mtu >= 512)
582 props->active_mtu = IB_MTU_512;
583 else
584 props->active_mtu = IB_MTU_256;
585
3c2d774c
GS		 586 props->lid = 1;
587 props->lmc = 0;
588 props->sm_lid = 0;
589 props->sm_sl = 0;
29327721
CT		 590 if (netif_queue_stopped(netdev))
591 props->state = IB_PORT_DOWN;
592 else if (nesvnic->linkup)
cd1d3f7a
CT		 593 props->state = IB_PORT_ACTIVE;
594 else
595 props->state = IB_PORT_DOWN;
3c2d774c
GS		 596 props->phys_state = 0;
597 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
598 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
599 props->gid_tbl_len = 1;
600 props->pkey_tbl_len = 1;
601 props->qkey_viol_cntr = 0;
602 props->active_width = IB_WIDTH_4X;
2e96691c 603 props->active_speed = IB_SPEED_SDR;
3c2d774c
GS		 604 props->max_msg_sz = 0x80000000;
605
606 return 0;
607}
608
609
3c2d774c
GS		 610/**
611 * nes_query_pkey
612 */
613static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
614{
615 *pkey = 0;
616 return 0;
617}
618
619
620/**
621 * nes_query_gid
622 */
623static int nes_query_gid(struct ib_device *ibdev, u8 port,
624 int index, union ib_gid *gid)
625{
626 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
627
628 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
629 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
630
631 return 0;
632}
633
634
635/**
636 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
637 * of all objects associated with a particular user-mode client.
638 */
639static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
640 struct ib_udata *udata)
641{
642 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
643 struct nes_device *nesdev = nesvnic->nesdev;
644 struct nes_adapter *nesadapter = nesdev->nesadapter;
645 struct nes_alloc_ucontext_req req;
646 struct nes_alloc_ucontext_resp uresp;
647 struct nes_ucontext *nes_ucontext;
648 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
649
650
651 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
652 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
653 return ERR_PTR(-EINVAL);
654 }
655
656 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
657 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
658 req.userspace_ver, NES_ABI_USERSPACE_VER);
659 return ERR_PTR(-EINVAL);
660 }
661
662
663 memset(&uresp, 0, sizeof uresp);
664
665 uresp.max_qps = nesibdev->max_qp;
666 uresp.max_pds = nesibdev->max_pd;
667 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
668 uresp.virtwq = nesadapter->virtwq;
669 uresp.kernel_ver = NES_ABI_KERNEL_VER;
670
671 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
672 if (!nes_ucontext)
673 return ERR_PTR(-ENOMEM);
674
675 nes_ucontext->nesdev = nesdev;
676 nes_ucontext->mmap_wq_offset = uresp.max_pds;
677 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
678 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
679 PAGE_SIZE;
680
681
682 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
683 kfree(nes_ucontext);
684 return ERR_PTR(-EFAULT);
685 }
686
687 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
688 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
689 atomic_set(&nes_ucontext->usecnt, 1);
690 return &nes_ucontext->ibucontext;
691}
692
693
694/**
695 * nes_dealloc_ucontext
696 */
697static int nes_dealloc_ucontext(struct ib_ucontext *context)
698{
699 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
700 /* struct nes_device *nesdev = nesvnic->nesdev; */
701 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
702
703 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
704 return 0;
705 kfree(nes_ucontext);
706 return 0;
707}
708
709
710/**
711 * nes_mmap
712 */
713static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
714{
715 unsigned long index;
716 struct nes_vnic *nesvnic = to_nesvnic(context->device);
717 struct nes_device *nesdev = nesvnic->nesdev;
718 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
719 struct nes_ucontext *nes_ucontext;
720 struct nes_qp *nesqp;
721
722 nes_ucontext = to_nesucontext(context);
723
724
725 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
726 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
727 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
728 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
729 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
730 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
731 return -EFAULT;
732 }
733 nesqp = nes_ucontext->mmap_nesqp[index];
734 if (nesqp == NULL) {
735 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
736 return -EFAULT;
737 }
738 if (remap_pfn_range(vma, vma->vm_start,
739 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
740 vma->vm_end - vma->vm_start,
741 vma->vm_page_prot)) {
742 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
743 return -EAGAIN;
744 }
745 vma->vm_private_data = nesqp;
746 return 0;
747 } else {
748 index = vma->vm_pgoff;
749 if (!test_bit(index, nes_ucontext->allocated_doorbells))
750 return -EFAULT;
751
752 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
753 if (io_remap_pfn_range(vma, vma->vm_start,
754 (nesdev->doorbell_start +
755 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
756 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
757 return -EAGAIN;
758 vma->vm_private_data = nes_ucontext;
759 return 0;
760 }
761
762 return -ENOSYS;
763}
764
765
766/**
767 * nes_alloc_pd
768 */
769static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
770 struct ib_ucontext *context, struct ib_udata *udata)
771{
772 struct nes_pd *nespd;
773 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
774 struct nes_device *nesdev = nesvnic->nesdev;
775 struct nes_adapter *nesadapter = nesdev->nesadapter;
776 struct nes_ucontext *nesucontext;
777 struct nes_alloc_pd_resp uresp;
778 u32 pd_num = 0;
779 int err;
780
781 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
782 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
29b4433d 783 netdev_refcnt_read(nesvnic->netdev));
3c2d774c
GS		 784
785 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
81821644 786 nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
3c2d774c
GS		 787 if (err) {
788 return ERR_PTR(err);
789 }
790
791 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
792 if (!nespd) {
793 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
794 return ERR_PTR(-ENOMEM);
795 }
796
797 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
798 nespd, nesvnic->nesibdev->ibdev.name);
799
800 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
801
802 if (context) {
803 nesucontext = to_nesucontext(context);
804 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
805 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
806 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
807 nespd->mmap_db_index, nespd->pd_id);
65b07ec2 808 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
3c2d774c
GS		 809 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
810 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
811 kfree(nespd);
812 return ERR_PTR(-ENOMEM);
813 }
814
815 uresp.pd_id = nespd->pd_id;
816 uresp.mmap_db_index = nespd->mmap_db_index;
817 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
818 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
819 kfree(nespd);
820 return ERR_PTR(-EFAULT);
821 }
822
823 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
824 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
825 nesucontext->first_free_db = nespd->mmap_db_index + 1;
826 }
827
828 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
829 return &nespd->ibpd;
830}
831
832
833/**
834 * nes_dealloc_pd
835 */
836static int nes_dealloc_pd(struct ib_pd *ibpd)
837{
838 struct nes_ucontext *nesucontext;
839 struct nes_pd *nespd = to_nespd(ibpd);
840 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
841 struct nes_device *nesdev = nesvnic->nesdev;
842 struct nes_adapter *nesadapter = nesdev->nesadapter;
843
844 if ((ibpd->uobject) && (ibpd->uobject->context)) {
845 nesucontext = to_nesucontext(ibpd->uobject->context);
846 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
847 nespd->mmap_db_index);
848 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
849 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
850 if (nesucontext->first_free_db > nespd->mmap_db_index) {
851 nesucontext->first_free_db = nespd->mmap_db_index;
852 }
853 }
854
855 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
856 nespd->pd_id, nespd);
857 nes_free_resource(nesadapter, nesadapter->allocated_pds,
858 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
859 kfree(nespd);
860
861 return 0;
862}
863
864
865/**
866 * nes_create_ah
867 */
868static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
869{
870 return ERR_PTR(-ENOSYS);
871}
872
873
874/**
875 * nes_destroy_ah
876 */
877static int nes_destroy_ah(struct ib_ah *ah)
878{
879 return -ENOSYS;
880}
881
882
883/**
884 * nes_get_encoded_size
885 */
886static inline u8 nes_get_encoded_size(int *size)
887{
888 u8 encoded_size = 0;
889 if (*size <= 32) {
890 *size = 32;
891 encoded_size = 1;
892 } else if (*size <= 128) {
893 *size = 128;
894 encoded_size = 2;
895 } else if (*size <= 512) {
896 *size = 512;
897 encoded_size = 3;
898 }
899 return (encoded_size);
900}
901
902
903
904/**
905 * nes_setup_virt_qp
906 */
907static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
908 struct nes_vnic *nesvnic, int sq_size, int rq_size)
909{
910 unsigned long flags;
911 void *mem;
912 __le64 *pbl = NULL;
913 __le64 *tpbl;
914 __le64 *pblbuffer;
915 struct nes_device *nesdev = nesvnic->nesdev;
916 struct nes_adapter *nesadapter = nesdev->nesadapter;
917 u32 pbl_entries;
918 u8 rq_pbl_entries;
919 u8 sq_pbl_entries;
920
921 pbl_entries = nespbl->pbl_size >> 3;
71e0957c 922 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
3c2d774c
GS		 923 nespbl->pbl_size, pbl_entries,
924 (void *)nespbl->pbl_vbase,
71e0957c 925 (unsigned long) nespbl->pbl_pbase);
3c2d774c
GS		 926 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
927 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
928 /* the first pbl to be fro the rq_vbase... */
929 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
930 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
931 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
932 if (!nespbl->page) {
933 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
934 kfree(nespbl);
935 return -ENOMEM;
936 }
937
938 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
939 nesqp->page = nespbl->page;
940 if (!nesqp->hwqp.sq_vbase) {
941 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
942 kfree(nespbl);
943 return -ENOMEM;
944 }
945
946 /* Now to get to sq.. we need to calculate how many */
947 /* PBL entries were used by the rq.. */
948 pbl += sq_pbl_entries;
949 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
950 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
951 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
952
71e0957c
RD		 953 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
954 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
955 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
3c2d774c
GS		 956 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
957 if (!nesadapter->free_256pbl) {
958 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
959 nespbl->pbl_pbase);
960 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
961 kunmap(nesqp->page);
962 kfree(nespbl);
963 return -ENOMEM;
964 }
965 nesadapter->free_256pbl--;
966 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
967
968 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
969 pblbuffer = nesqp->pbl_vbase;
970 if (!nesqp->pbl_vbase) {
971 /* memory allocated during nes_reg_user_mr() */
972 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
973 nespbl->pbl_pbase);
974 kfree(nespbl);
975 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
976 nesadapter->free_256pbl++;
977 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
978 kunmap(nesqp->page);
979 return -ENOMEM;
980 }
981 memset(nesqp->pbl_vbase, 0, 256);
982 /* fill in the page address in the pbl buffer.. */
983 tpbl = pblbuffer + 16;
984 pbl = (__le64 *)nespbl->pbl_vbase;
985 while (sq_pbl_entries--)
986 *tpbl++ = *pbl++;
987 tpbl = pblbuffer;
988 while (rq_pbl_entries--)
989 *tpbl++ = *pbl++;
990
991 /* done with memory allocated during nes_reg_user_mr() */
992 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
993 nespbl->pbl_pbase);
994 kfree(nespbl);
995
996 nesqp->qp_mem_size =
997 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
998 /* Round up to a multiple of a page */
999 nesqp->qp_mem_size += PAGE_SIZE - 1;
1000 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1001
1002 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1003 &nesqp->hwqp.q2_pbase);
1004
1005 if (!mem) {
1006 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1007 nesqp->pbl_vbase = NULL;
1008 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1009 nesadapter->free_256pbl++;
1010 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1011 kunmap(nesqp->page);
1012 return -ENOMEM;
1013 }
d2fa9b26 1014 nesqp->sq_kmapped = 1;
3c2d774c
GS		 1015 nesqp->hwqp.q2_vbase = mem;
1016 mem += 256;
1017 memset(nesqp->hwqp.q2_vbase, 0, 256);
1018 nesqp->nesqp_context = mem;
1019 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1020 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1021
1022 return 0;
1023}
1024
1025
1026/**
1027 * nes_setup_mmap_qp
1028 */
1029static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1030 int sq_size, int rq_size)
1031{
1032 void *mem;
1033 struct nes_device *nesdev = nesvnic->nesdev;
1034
1035 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1036 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1037 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1038 256; /* this is Q2 */
1039 /* Round up to a multiple of a page */
1040 nesqp->qp_mem_size += PAGE_SIZE - 1;
1041 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1042
1043 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1044 &nesqp->hwqp.sq_pbase);
1045 if (!mem)
1046 return -ENOMEM;
1047 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1048 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1049 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1050
1051 memset(mem, 0, nesqp->qp_mem_size);
1052
1053 nesqp->hwqp.sq_vbase = mem;
1054 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1055
1056 nesqp->hwqp.rq_vbase = mem;
1057 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1058 sizeof(struct nes_hw_qp_wqe) * sq_size;
1059 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1060
1061 nesqp->hwqp.q2_vbase = mem;
1062 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1063 sizeof(struct nes_hw_qp_wqe) * rq_size;
1064 mem += 256;
1065 memset(nesqp->hwqp.q2_vbase, 0, 256);
1066
1067 nesqp->nesqp_context = mem;
1068 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1069 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1070 return 0;
1071}
1072
1073
1074/**
1075 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1076 */
1077static inline void nes_free_qp_mem(struct nes_device *nesdev,
1078 struct nes_qp *nesqp, int virt_wqs)
1079{
1080 unsigned long flags;
1081 struct nes_adapter *nesadapter = nesdev->nesadapter;
1082 if (!virt_wqs) {
1083 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1084 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1085 }else {
1086 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1087 nesadapter->free_256pbl++;
1088 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1089 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1090 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1091 nesqp->pbl_vbase = NULL;
d2fa9b26
FL		 1092 if (nesqp->sq_kmapped) {
1093 nesqp->sq_kmapped = 0;
1094 kunmap(nesqp->page);
1095 }
3c2d774c
GS		 1096 }
1097}
1098
1099
1100/**
1101 * nes_create_qp
1102 */
1103static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1104 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1105{
1106 u64 u64temp= 0;
1107 u64 u64nesqp = 0;
1108 struct nes_pd *nespd = to_nespd(ibpd);
1109 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1110 struct nes_device *nesdev = nesvnic->nesdev;
1111 struct nes_adapter *nesadapter = nesdev->nesadapter;
1112 struct nes_qp *nesqp;
1113 struct nes_cq *nescq;
1114 struct nes_ucontext *nes_ucontext;
1115 struct nes_hw_cqp_wqe *cqp_wqe;
1116 struct nes_cqp_request *cqp_request;
1117 struct nes_create_qp_req req;
1118 struct nes_create_qp_resp uresp;
1119 struct nes_pbl *nespbl = NULL;
1120 u32 qp_num = 0;
1121 u32 opcode = 0;
1122 /* u32 counter = 0; */
1123 void *mem;
1124 unsigned long flags;
1125 int ret;
1126 int err;
1127 int virt_wqs = 0;
1128 int sq_size;
1129 int rq_size;
1130 u8 sq_encoded_size;
1131 u8 rq_encoded_size;
1132 /* int counter; */
1133
b846f25a
EC		 1134 if (init_attr->create_flags)
1135 return ERR_PTR(-EINVAL);
1136
3c2d774c
GS		 1137 atomic_inc(&qps_created);
1138 switch (init_attr->qp_type) {
1139 case IB_QPT_RC:
1140 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1141 init_attr->cap.max_inline_data = 0;
1142 } else {
1143 init_attr->cap.max_inline_data = 64;
1144 }
1145 sq_size = init_attr->cap.max_send_wr;
1146 rq_size = init_attr->cap.max_recv_wr;
1147
7495ab68 1148 /* check if the encoded sizes are OK or not... */
3c2d774c
GS		 1149 sq_encoded_size = nes_get_encoded_size(&sq_size);
1150 rq_encoded_size = nes_get_encoded_size(&rq_size);
1151
1152 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1153 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1154 rq_size, sq_size);
1155 return ERR_PTR(-EINVAL);
1156 }
1157
1158 init_attr->cap.max_send_wr = sq_size -2;
1159 init_attr->cap.max_recv_wr = rq_size -1;
1160 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1161
1162 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
81821644 1163 nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
3c2d774c
GS		 1164 if (ret) {
1165 return ERR_PTR(ret);
1166 }
1167
1168 /* Need 512 (actually now 1024) byte alignment on this structure */
1169 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1170 if (!mem) {
1171 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1172 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1173 return ERR_PTR(-ENOMEM);
1174 }
1175 u64nesqp = (unsigned long)mem;
1176 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1177 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1178 u64nesqp &= ~u64temp;
1179 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1180 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1181 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1182 nesqp->allocated_buffer = mem;
1183
1184 if (udata) {
1185 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1186 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1187 kfree(nesqp->allocated_buffer);
1188 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
1189 return NULL;
1190 }
1191 if (req.user_wqe_buffers) {
1192 virt_wqs = 1;
1193 }
1194 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1195 nesqp->user_mode = 1;
1196 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1197 if (virt_wqs) {
1198 err = 1;
1199 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1200 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1201 list_del(&nespbl->list);
1202 err = 0;
1203 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1204 nespbl, nespbl->user_base);
1205 break;
1206 }
1207 }
1208 if (err) {
1209 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1210 (long long unsigned int)req.user_wqe_buffers);
1211 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1212 kfree(nesqp->allocated_buffer);
9300c0c0 1213 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1214 }
1215 }
1216
1217 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1218 nesqp->mmap_sq_db_index =
1219 find_next_zero_bit(nes_ucontext->allocated_wqs,
1220 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1221 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1222 nespd->mmap_db_index); */
51af33e8 1223 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
3c2d774c
GS		 1224 nes_debug(NES_DBG_QP,
1225 "db index > max user regions, failing create QP\n");
1226 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1227 if (virt_wqs) {
1228 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1229 nespbl->pbl_pbase);
1230 kfree(nespbl);
1231 }
1232 kfree(nesqp->allocated_buffer);
1233 return ERR_PTR(-ENOMEM);
1234 }
1235 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1236 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1237 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1238 } else {
1239 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1240 kfree(nesqp->allocated_buffer);
1241 return ERR_PTR(-EFAULT);
1242 }
1243 }
1244 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1245 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1246 if (err) {
1247 nes_debug(NES_DBG_QP,
1248 "error geting qp mem code = %d\n", err);
1249 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1250 kfree(nesqp->allocated_buffer);
1251 return ERR_PTR(-ENOMEM);
1252 }
1253
1254 nesqp->hwqp.sq_size = sq_size;
1255 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1256 nesqp->hwqp.sq_head = 1;
1257 nesqp->hwqp.rq_size = rq_size;
1258 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1259 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1260 (void *)nesqp->nesqp_context_pbase);
1261 */
1262 nesqp->hwqp.qp_id = qp_num;
1263 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1264 nesqp->nespd = nespd;
1265
1266 nescq = to_nescq(init_attr->send_cq);
1267 nesqp->nesscq = nescq;
1268 nescq = to_nescq(init_attr->recv_cq);
1269 nesqp->nesrcq = nescq;
1270
1271 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1272 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1273 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1274 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1275 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1276 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
c12e56ef 1277 if (!udata) {
3c2d774c
GS		 1278 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1279 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
c12e56ef 1280 }
3c2d774c
GS		 1281 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1282 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1283 u64temp = (u64)nesqp->hwqp.sq_pbase;
1284 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1285 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1286
1287
1288 if (!virt_wqs) {
1289 u64temp = (u64)nesqp->hwqp.sq_pbase;
1290 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1291 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1292 u64temp = (u64)nesqp->hwqp.rq_pbase;
1293 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1294 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1295 } else {
1296 u64temp = (u64)nesqp->pbl_pbase;
1297 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1298 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1299 }
1300
1301 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1302 nesvnic->next_qp_nic_index,
1303 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1304 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1305 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1306 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1307 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1308 nesvnic->next_qp_nic_index++;
1309 if ((nesvnic->next_qp_nic_index > 3) ||
1310 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1311 nesvnic->next_qp_nic_index = 0;
1312 }
1313 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1314
1315 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1316 u64temp = (u64)nesqp->hwqp.q2_pbase;
1317 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1318 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1319 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1320 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1321 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
883c6992 1322 NES_QPCONTEXT_ORDIRD_AAH |
3c2d774c
GS		 1323 ((((u32)nesadapter->max_irrq_wr) <<
1324 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1325 if (disable_mpa_crc) {
1326 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1327 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1328 }
1329
1330
1331 /* Create the QP */
1332 cqp_request = nes_get_cqp_request(nesdev);
1333 if (cqp_request == NULL) {
1334 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1335 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1336 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1337 kfree(nesqp->allocated_buffer);
1338 return ERR_PTR(-ENOMEM);
1339 }
1340 cqp_request->waiting = 1;
1341 cqp_wqe = &cqp_request->cqp_wqe;
1342
1343 if (!virt_wqs) {
1344 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1345 NES_CQP_QP_IWARP_STATE_IDLE;
1346 } else {
1347 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1348 NES_CQP_QP_IWARP_STATE_IDLE;
1349 }
1350 opcode |= NES_CQP_QP_CQS_VALID;
1351 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1352 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1353 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1354
1355 u64temp = (u64)nesqp->nesqp_context_pbase;
1356 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1357
1358 atomic_set(&cqp_request->refcount, 2);
8294f297 1359 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1360
1361 /* Wait for CQP */
1362 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1363 nesqp->hwqp.qp_id);
1364 ret = wait_event_timeout(cqp_request->waitq,
1365 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1366 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1367 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1368 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1369 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1370 cqp_request->major_code, cqp_request->minor_code);
1371 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 1372 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1373 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1374 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1375 kfree(nesqp->allocated_buffer);
1376 if (!ret) {
1377 return ERR_PTR(-ETIME);
1378 } else {
1379 return ERR_PTR(-EIO);
1380 }
3c2d774c
GS		 1381 }
1382
1ff66e8c
RD		 1383 nes_put_cqp_request(nesdev, cqp_request);
1384
3c2d774c
GS		 1385 if (ibpd->uobject) {
1386 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
60429630 1387 uresp.mmap_rq_db_index = 0;
3c2d774c
GS		 1388 uresp.actual_sq_size = sq_size;
1389 uresp.actual_rq_size = rq_size;
1390 uresp.qp_id = nesqp->hwqp.qp_id;
1391 uresp.nes_drv_opt = nes_drv_opt;
1392 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1393 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1394 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1395 kfree(nesqp->allocated_buffer);
1396 return ERR_PTR(-EFAULT);
1397 }
1398 }
1399
1400 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1401 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1402 spin_lock_init(&nesqp->lock);
3c2d774c
GS		 1403 nes_add_ref(&nesqp->ibqp);
1404 break;
1405 default:
1406 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1407 return ERR_PTR(-EINVAL);
3c2d774c
GS		 1408 }
1409
d14152da 1410 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
7bfcfa51
TN		 1411 init_timer(&nesqp->terminate_timer);
1412 nesqp->terminate_timer.function = nes_terminate_timeout;
1413 nesqp->terminate_timer.data = (unsigned long)nesqp;
d14152da 1414
3c2d774c
GS		 1415 /* update the QP table */
1416 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1417 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
29b4433d 1418 netdev_refcnt_read(nesvnic->netdev));
3c2d774c
GS		 1419
1420 return &nesqp->ibqp;
1421}
1422
5ee21fe0
DW		 1423/**
1424 * nes_clean_cq
1425 */
1426static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1427{
1428 u32 cq_head;
1429 u32 lo;
1430 u32 hi;
1431 u64 u64temp;
1432 unsigned long flags = 0;
1433
1434 spin_lock_irqsave(&nescq->lock, flags);
1435
1436 cq_head = nescq->hw_cq.cq_head;
1437 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1438 rmb();
1439 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1440 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1441 u64temp = (((u64)hi) << 32) | ((u64)lo);
1442 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1443 if (u64temp == (u64)(unsigned long)nesqp) {
1444 /* Zero the context value so cqe will be ignored */
1445 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1446 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1447 }
1448
1449 if (++cq_head >= nescq->hw_cq.cq_size)
1450 cq_head = 0;
1451 }
1452
1453 spin_unlock_irqrestore(&nescq->lock, flags);
1454}
1455
1456
3c2d774c
GS		 1457/**
1458 * nes_destroy_qp
1459 */
1460static int nes_destroy_qp(struct ib_qp *ibqp)
1461{
1462 struct nes_qp *nesqp = to_nesqp(ibqp);
3c2d774c
GS		 1463 struct nes_ucontext *nes_ucontext;
1464 struct ib_qp_attr attr;
1465 struct iw_cm_id *cm_id;
1466 struct iw_cm_event cm_event;
0f0bee8b 1467 int ret = 0;
3c2d774c
GS		 1468
1469 atomic_inc(&sw_qps_destroyed);
1470 nesqp->destroyed = 1;
1471
1472 /* Blow away the connection if it exists. */
1473 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1474 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1475 attr.qp_state = IB_QPS_ERR;
1476 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1477 }
1478
1479 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1480 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1481 cm_id = nesqp->cm_id;
1482 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
d0c49bf3 1483 cm_event.status = -ETIMEDOUT;
3c2d774c
GS		 1484 cm_event.local_addr = cm_id->local_addr;
1485 cm_event.remote_addr = cm_id->remote_addr;
1486 cm_event.private_data = NULL;
1487 cm_event.private_data_len = 0;
1488
1489 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1490 "QP%u. cm_id = %p, refcount = %u. \n",
1491 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1492
1493 cm_id->rem_ref(cm_id);
1494 ret = cm_id->event_handler(cm_id, &cm_event);
1495 if (ret)
1496 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1497 }
1498
3c2d774c
GS		 1499 if (nesqp->user_mode) {
1500 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1501 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1502 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1503 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1504 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1505 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1506 }
1507 }
d2fa9b26
FL		 1508 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1509 nesqp->sq_kmapped = 0;
3c2d774c 1510 kunmap(nesqp->page);
d2fa9b26 1511 }
5ee21fe0
DW		 1512 } else {
1513 /* Clean any pending completions from the cq(s) */
1514 if (nesqp->nesscq)
1515 nes_clean_cq(nesqp, nesqp->nesscq);
1516
1517 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1518 nes_clean_cq(nesqp, nesqp->nesrcq);
3c2d774c 1519 }
3c2d774c
GS		 1520 nes_rem_ref(&nesqp->ibqp);
1521 return 0;
1522}
1523
1524
1525/**
1526 * nes_create_cq
1527 */
1528static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries,
1529 int comp_vector,
1530 struct ib_ucontext *context, struct ib_udata *udata)
1531{
1532 u64 u64temp;
1533 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1534 struct nes_device *nesdev = nesvnic->nesdev;
1535 struct nes_adapter *nesadapter = nesdev->nesadapter;
1536 struct nes_cq *nescq;
1537 struct nes_ucontext *nes_ucontext = NULL;
1538 struct nes_cqp_request *cqp_request;
1539 void *mem = NULL;
1540 struct nes_hw_cqp_wqe *cqp_wqe;
1541 struct nes_pbl *nespbl = NULL;
1542 struct nes_create_cq_req req;
1543 struct nes_create_cq_resp resp;
1544 u32 cq_num = 0;
1545 u32 opcode = 0;
1546 u32 pbl_entries = 1;
1547 int err;
1548 unsigned long flags;
1549 int ret;
1550
5924aea6
CT		 1551 if (entries > nesadapter->max_cqe)
1552 return ERR_PTR(-EINVAL);
1553
3c2d774c 1554 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
81821644 1555 nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
3c2d774c
GS		 1556 if (err) {
1557 return ERR_PTR(err);
1558 }
1559
1560 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1561 if (!nescq) {
1562 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1563 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1564 return ERR_PTR(-ENOMEM);
1565 }
1566
1567 nescq->hw_cq.cq_size = max(entries + 1, 5);
1568 nescq->hw_cq.cq_number = cq_num;
1569 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1570
1571
1572 if (context) {
1573 nes_ucontext = to_nesucontext(context);
1574 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1575 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1576 kfree(nescq);
1577 return ERR_PTR(-EFAULT);
1578 }
1579 nesvnic->mcrq_ucontext = nes_ucontext;
1580 nes_ucontext->mcrqf = req.mcrqf;
1581 if (nes_ucontext->mcrqf) {
1582 if (nes_ucontext->mcrqf & 0x80000000)
2e369544 1583 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
3c2d774c
GS		 1584 else if (nes_ucontext->mcrqf & 0x40000000)
1585 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1586 else
1587 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
5d1af5c8 1588 nescq->mcrqf = nes_ucontext->mcrqf;
3c2d774c
GS		 1589 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1590 }
1591 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1592 (unsigned long)req.user_cq_buffer, entries);
9300c0c0 1593 err = 1;
3c2d774c
GS		 1594 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1595 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1596 list_del(&nespbl->list);
1597 err = 0;
1598 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1599 nespbl);
1600 break;
1601 }
1602 }
1603 if (err) {
1604 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1605 kfree(nescq);
9300c0c0 1606 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1607 }
1608
1609 pbl_entries = nespbl->pbl_size >> 3;
1610 nescq->cq_mem_size = 0;
1611 } else {
1612 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1613 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1614 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1615
1616 /* allocate the physical buffer space */
1617 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1618 &nescq->hw_cq.cq_pbase);
1619 if (!mem) {
1620 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1621 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1622 kfree(nescq);
1623 return ERR_PTR(-ENOMEM);
1624 }
1625
1626 memset(mem, 0, nescq->cq_mem_size);
1627 nescq->hw_cq.cq_vbase = mem;
1628 nescq->hw_cq.cq_head = 0;
1629 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1630 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1631 (u32)nescq->hw_cq.cq_pbase);
1632 }
1633
1634 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1635 spin_lock_init(&nescq->lock);
1636
1637 /* send CreateCQ request to CQP */
1638 cqp_request = nes_get_cqp_request(nesdev);
1639 if (cqp_request == NULL) {
1640 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1641 if (!context)
1642 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1643 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1644 else {
1645 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1646 nespbl->pbl_vbase, nespbl->pbl_pbase);
1647 kfree(nespbl);
1648 }
1649
3c2d774c
GS		 1650 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1651 kfree(nescq);
1652 return ERR_PTR(-ENOMEM);
1653 }
1654 cqp_request->waiting = 1;
1655 cqp_wqe = &cqp_request->cqp_wqe;
1656
1657 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1658 NES_CQP_CQ_CHK_OVERFLOW |
1659 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1660
1661 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1662
1663 if (pbl_entries != 1) {
1664 if (pbl_entries > 32) {
1665 /* use 4k pbl */
1666 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1667 if (nesadapter->free_4kpbl == 0) {
c5d321e5
FL		 1668 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1669 nes_free_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1670 if (!context)
1671 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1672 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1673 else {
1674 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1675 nespbl->pbl_vbase, nespbl->pbl_pbase);
1676 kfree(nespbl);
1677 }
3c2d774c
GS		 1678 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1679 kfree(nescq);
1680 return ERR_PTR(-ENOMEM);
1681 } else {
1682 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1683 nescq->virtual_cq = 2;
1684 nesadapter->free_4kpbl--;
1685 }
1686 } else {
1687 /* use 256 byte pbl */
1688 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1689 if (nesadapter->free_256pbl == 0) {
c5d321e5
FL		 1690 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1691 nes_free_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1692 if (!context)
1693 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1694 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1695 else {
1696 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1697 nespbl->pbl_vbase, nespbl->pbl_pbase);
1698 kfree(nespbl);
1699 }
3c2d774c
GS		 1700 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1701 kfree(nescq);
1702 return ERR_PTR(-ENOMEM);
1703 } else {
1704 opcode |= NES_CQP_CQ_VIRT;
1705 nescq->virtual_cq = 1;
1706 nesadapter->free_256pbl--;
1707 }
1708 }
1709 }
1710
1711 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1712
1713 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1714 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1715 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1716 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1717
1718 if (context) {
1719 if (pbl_entries != 1)
1720 u64temp = (u64)nespbl->pbl_pbase;
1721 else
1722 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1723 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1724 nes_ucontext->mmap_db_index[0]);
1725 } else {
1726 u64temp = (u64)nescq->hw_cq.cq_pbase;
1727 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1728 }
1729 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1730 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1731 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1732 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1733 cpu_to_le32((u32)(u64temp >> 1));
1734 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1735 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1736
1737 atomic_set(&cqp_request->refcount, 2);
8294f297 1738 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1739
1740 /* Wait for CQP */
1741 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1742 nescq->hw_cq.cq_number);
1743 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1744 NES_EVENT_TIMEOUT * 2);
1745 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1746 nescq->hw_cq.cq_number, ret);
1747 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 1748 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1749 if (!context)
1750 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1751 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1752 else {
1753 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1754 nespbl->pbl_vbase, nespbl->pbl_pbase);
1755 kfree(nespbl);
1756 }
3c2d774c
GS		 1757 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1758 kfree(nescq);
1759 return ERR_PTR(-EIO);
3c2d774c 1760 }
1ff66e8c 1761 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1762
1763 if (context) {
1764 /* free the nespbl */
1765 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1766 nespbl->pbl_pbase);
1767 kfree(nespbl);
1768 resp.cq_id = nescq->hw_cq.cq_number;
1769 resp.cq_size = nescq->hw_cq.cq_size;
1770 resp.mmap_db_index = 0;
60429630 1771 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
3c2d774c
GS		 1772 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1773 kfree(nescq);
1774 return ERR_PTR(-EFAULT);
1775 }
1776 }
1777
1778 return &nescq->ibcq;
1779}
1780
1781
1782/**
1783 * nes_destroy_cq
1784 */
1785static int nes_destroy_cq(struct ib_cq *ib_cq)
1786{
1787 struct nes_cq *nescq;
1788 struct nes_device *nesdev;
1789 struct nes_vnic *nesvnic;
1790 struct nes_adapter *nesadapter;
1791 struct nes_hw_cqp_wqe *cqp_wqe;
1792 struct nes_cqp_request *cqp_request;
1793 unsigned long flags;
1794 u32 opcode = 0;
1795 int ret;
1796
1797 if (ib_cq == NULL)
1798 return 0;
1799
1800 nescq = to_nescq(ib_cq);
1801 nesvnic = to_nesvnic(ib_cq->device);
1802 nesdev = nesvnic->nesdev;
1803 nesadapter = nesdev->nesadapter;
1804
1805 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1806
1807 /* Send DestroyCQ request to CQP */
1808 cqp_request = nes_get_cqp_request(nesdev);
1809 if (cqp_request == NULL) {
1810 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1811 return -ENOMEM;
1812 }
1813 cqp_request->waiting = 1;
1814 cqp_wqe = &cqp_request->cqp_wqe;
1815 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1816 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1817 if (nescq->virtual_cq == 1) {
1818 nesadapter->free_256pbl++;
1819 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1820 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
33718363 1821 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
3c2d774c
GS		 1822 }
1823 } else if (nescq->virtual_cq == 2) {
1824 nesadapter->free_4kpbl++;
1825 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1826 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
33718363 1827 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
3c2d774c
GS		 1828 }
1829 opcode |= NES_CQP_CQ_4KB_CHUNK;
1830 }
1831
1832 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1833
1834 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1835 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1836 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1837 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
5d1af5c8
MW		 1838 if (!nescq->mcrqf)
1839 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1840
3c2d774c 1841 atomic_set(&cqp_request->refcount, 2);
8294f297 1842 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1843
1844 /* Wait for CQP */
1845 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1846 nescq->hw_cq.cq_number);
1847 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1848 NES_EVENT_TIMEOUT);
1849 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1850 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1851 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1852 cqp_request->minor_code);
1ff66e8c
RD		 1853 if (!ret) {
1854 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
3c2d774c 1855 nescq->hw_cq.cq_number);
1ff66e8c
RD		 1856 ret = -ETIME;
1857 } else if (cqp_request->major_code) {
1858 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
3c2d774c 1859 nescq->hw_cq.cq_number);
1ff66e8c 1860 ret = -EIO;
3c2d774c
GS		 1861 } else {
1862 ret = 0;
3c2d774c 1863 }
1ff66e8c 1864 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1865
1866 if (nescq->cq_mem_size)
1867 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
31d1e340 1868 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
3c2d774c
GS		 1869 kfree(nescq);
1870
1871 return ret;
1872}
1873
0145f341
DW		 1874/**
1875 * root_256
1876 */
1877static u32 root_256(struct nes_device *nesdev,
1878 struct nes_root_vpbl *root_vpbl,
1879 struct nes_root_vpbl *new_root,
cc005fa2 1880 u16 pbl_count_4k)
0145f341
DW		 1881{
1882 u64 leaf_pbl;
1883 int i, j, k;
1884
1885 if (pbl_count_4k == 1) {
1886 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1887 512, &new_root->pbl_pbase);
1888
1889 if (new_root->pbl_vbase == NULL)
1890 return 0;
1891
1892 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1893 for (i = 0; i < 16; i++) {
1894 new_root->pbl_vbase[i].pa_low =
1895 cpu_to_le32((u32)leaf_pbl);
1896 new_root->pbl_vbase[i].pa_high =
1897 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1898 leaf_pbl += 256;
1899 }
1900 } else {
1901 for (i = 3; i >= 0; i--) {
1902 j = i * 16;
1903 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1904 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1905 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1906 << 32);
1907 for (k = 1; k < 16; k++) {
1908 leaf_pbl += 256;
1909 root_vpbl->pbl_vbase[j + k].pa_low =
1910 cpu_to_le32((u32)leaf_pbl);
1911 root_vpbl->pbl_vbase[j + k].pa_high =
1912 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1913 }
1914 }
1915 }
1916
1917 return 1;
1918}
1919
3c2d774c
GS		 1920
1921/**
1922 * nes_reg_mr
1923 */
1924static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1925 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
0145f341
DW		 1926 dma_addr_t single_buffer, u16 pbl_count_4k,
1927 u16 residual_page_count_4k, int acc, u64 *iova_start,
1928 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
3c2d774c
GS		 1929{
1930 struct nes_hw_cqp_wqe *cqp_wqe;
1931 struct nes_cqp_request *cqp_request;
1932 unsigned long flags;
1933 int ret;
1934 struct nes_adapter *nesadapter = nesdev->nesadapter;
0145f341 1935 uint pg_cnt = 0;
1af9222b 1936 u16 pbl_count_256 = 0;
0145f341
DW		 1937 u16 pbl_count = 0;
1938 u8 use_256_pbls = 0;
1939 u8 use_4k_pbls = 0;
1940 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
812d8672 1941 struct nes_root_vpbl new_root = { 0, NULL, NULL };
3c2d774c
GS		 1942 u32 opcode = 0;
1943 u16 major_code;
1944
1945 /* Register the region with the adapter */
1946 cqp_request = nes_get_cqp_request(nesdev);
1947 if (cqp_request == NULL) {
1948 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1949 return -ENOMEM;
1950 }
1951 cqp_request->waiting = 1;
1952 cqp_wqe = &cqp_request->cqp_wqe;
1953
0145f341
DW		 1954 if (pbl_count_4k) {
1955 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1956
1957 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1958 pbl_count_256 = (pg_cnt + 31) / 32;
1959 if (pg_cnt <= 32) {
1960 if (pbl_count_256 <= nesadapter->free_256pbl)
1961 use_256_pbls = 1;
1962 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1963 use_4k_pbls = 1;
1964 } else if (pg_cnt <= 2048) {
1965 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1966 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1967 use_4k_pbls = 1;
1968 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1969 use_256_pbls = 1;
1970 use_two_level = 1;
1971 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1972 use_4k_pbls = 1;
3c2d774c
GS		 1973 }
1974 } else {
0145f341
DW		 1975 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1976 use_4k_pbls = 1;
3c2d774c 1977 }
0145f341
DW		 1978
1979 if (use_256_pbls) {
1980 pbl_count = pbl_count_256;
1981 nesadapter->free_256pbl -= pbl_count + use_two_level;
1982 } else if (use_4k_pbls) {
1983 pbl_count = pbl_count_4k;
1984 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1985 } else {
1986 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1987 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1988 nes_free_cqp_request(nesdev, cqp_request);
1989 return -ENOMEM;
1990 }
1991
1992 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
3c2d774c
GS		 1993 }
1994
0145f341 1995 if (use_256_pbls && use_two_level) {
cc005fa2 1996 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
0145f341
DW		 1997 if (new_root.pbl_pbase != 0)
1998 root_vpbl = &new_root;
1999 } else {
2000 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2001 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2002 use_256_pbls = 0;
2003
2004 if (pbl_count_4k == 1)
2005 use_two_level = 0;
2006 pbl_count = pbl_count_4k;
2007
2008 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2009 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2010 use_4k_pbls = 1;
2011 }
2012 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2013
2014 if (use_4k_pbls == 0)
2015 return -ENOMEM;
2016 }
2017 }
3c2d774c
GS		 2018
2019 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2020 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2021 if (acc & IB_ACCESS_LOCAL_WRITE)
2022 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2023 if (acc & IB_ACCESS_REMOTE_WRITE)
2024 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2025 if (acc & IB_ACCESS_REMOTE_READ)
2026 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2027 if (acc & IB_ACCESS_MW_BIND)
2028 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2029
2030 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2031 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2032 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2033 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2034
2035 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2036 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2037 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2038 cpu_to_le32(nespd->pd_id & 0x00007fff);
2039 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2040
2041 if (pbl_count == 0) {
2042 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2043 } else {
2044 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2045 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
0145f341 2046 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
3c2d774c 2047
0145f341 2048 if (use_4k_pbls)
3c2d774c
GS		 2049 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2050 }
2051 barrier();
2052
2053 atomic_set(&cqp_request->refcount, 2);
8294f297 2054 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 2055
2056 /* Wait for CQP */
2057 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2058 NES_EVENT_TIMEOUT);
2059 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2060 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2061 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2062 major_code = cqp_request->major_code;
1ff66e8c
RD		 2063 nes_put_cqp_request(nesdev, cqp_request);
2064
dae5d13a
DW		 2065 if ((!ret || major_code) && pbl_count != 0) {
2066 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
0145f341
DW		 2067 if (use_256_pbls)
2068 nesadapter->free_256pbl += pbl_count + use_two_level;
2069 else if (use_4k_pbls)
2070 nesadapter->free_4kpbl += pbl_count + use_two_level;
dae5d13a
DW		 2071 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2072 }
0145f341
DW		 2073 if (new_root.pbl_pbase)
2074 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2075 new_root.pbl_pbase);
2076
3c2d774c
GS		 2077 if (!ret)
2078 return -ETIME;
2079 else if (major_code)
2080 return -EIO;
3c2d774c 2081
0145f341
DW		 2082 *actual_pbl_cnt = pbl_count + use_two_level;
2083 *used_4k_pbls = use_4k_pbls;
3c2d774c
GS		 2084 return 0;
2085}
2086
2087
2088/**
2089 * nes_reg_phys_mr
2090 */
2091static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2092 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2093 u64 * iova_start)
2094{
2095 u64 region_length;
2096 struct nes_pd *nespd = to_nespd(ib_pd);
2097 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2098 struct nes_device *nesdev = nesvnic->nesdev;
2099 struct nes_adapter *nesadapter = nesdev->nesadapter;
2100 struct nes_mr *nesmr;
2101 struct ib_mr *ibmr;
2102 struct nes_vpbl vpbl;
2103 struct nes_root_vpbl root_vpbl;
2104 u32 stag;
2105 u32 i;
3f32eb11 2106 unsigned long mask;
3c2d774c
GS		 2107 u32 stag_index = 0;
2108 u32 next_stag_index = 0;
2109 u32 driver_key = 0;
2110 u32 root_pbl_index = 0;
2111 u32 cur_pbl_index = 0;
69d51023 2112 int err = 0;
3c2d774c
GS		 2113 int ret = 0;
2114 u16 pbl_count = 0;
2115 u8 single_page = 1;
2116 u8 stag_key = 0;
2117
3c2d774c
GS		 2118 region_length = 0;
2119 vpbl.pbl_vbase = NULL;
2120 root_vpbl.pbl_vbase = NULL;
2121 root_vpbl.pbl_pbase = 0;
2122
2123 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2124 stag_key = (u8)next_stag_index;
2125
2126 driver_key = 0;
2127
2128 next_stag_index >>= 8;
2129 next_stag_index %= nesadapter->max_mr;
2130 if (num_phys_buf > (1024*512)) {
2131 return ERR_PTR(-E2BIG);
2132 }
2133
3f32eb11
DW		 2134 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2135 return ERR_PTR(-EINVAL);
2136
3c2d774c 2137 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
81821644 2138 &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
3c2d774c
GS		 2139 if (err) {
2140 return ERR_PTR(err);
2141 }
2142
2143 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2144 if (!nesmr) {
2145 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2146 return ERR_PTR(-ENOMEM);
2147 }
2148
2149 for (i = 0; i < num_phys_buf; i++) {
2150
2151 if ((i & 0x01FF) == 0) {
2152 if (root_pbl_index == 1) {
2153 /* Allocate the root PBL */
2154 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2155 &root_vpbl.pbl_pbase);
2156 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2157 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2158 if (!root_vpbl.pbl_vbase) {
2159 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2160 vpbl.pbl_pbase);
2161 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2162 kfree(nesmr);
2163 return ERR_PTR(-ENOMEM);
2164 }
2165 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2166 if (!root_vpbl.leaf_vpbl) {
2167 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2168 root_vpbl.pbl_pbase);
2169 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2170 vpbl.pbl_pbase);
2171 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2172 kfree(nesmr);
2173 return ERR_PTR(-ENOMEM);
2174 }
2175 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2176 root_vpbl.pbl_vbase[0].pa_high =
2177 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2178 root_vpbl.leaf_vpbl[0] = vpbl;
2179 }
2180 /* Allocate a 4K buffer for the PBL */
2181 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2182 &vpbl.pbl_pbase);
2183 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2184 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2185 if (!vpbl.pbl_vbase) {
2186 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2187 ibmr = ERR_PTR(-ENOMEM);
2188 kfree(nesmr);
2189 goto reg_phys_err;
2190 }
2191 /* Fill in the root table */
2192 if (1 <= root_pbl_index) {
2193 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2194 cpu_to_le32((u32)vpbl.pbl_pbase);
2195 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2196 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2197 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2198 }
2199 root_pbl_index++;
2200 cur_pbl_index = 0;
2201 }
3c2d774c 2202
3f32eb11
DW		 2203 mask = !buffer_list[i].size;
2204 if (i != 0)
2205 mask |= buffer_list[i].addr;
2206 if (i != num_phys_buf - 1)
2207 mask |= buffer_list[i].addr + buffer_list[i].size;
2208
2209 if (mask & ~PAGE_MASK) {
3c2d774c 2210 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
3f32eb11 2211 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
3c2d774c
GS		 2212 ibmr = ERR_PTR(-EINVAL);
2213 kfree(nesmr);
2214 goto reg_phys_err;
2215 }
2216
2217 region_length += buffer_list[i].size;
2218 if ((i != 0) && (single_page)) {
2219 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2220 single_page = 0;
2221 }
3f32eb11 2222 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
3c2d774c
GS		 2223 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2224 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2225 }
2226
2227 stag = stag_index << 8;
2228 stag |= driver_key;
2229 stag += (u32)stag_key;
2230
2231 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2232 " length = 0x%016lX, index = 0x%08X\n",
2233 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2234
3c2d774c
GS		 2235 /* Make the leaf PBL the root if only one PBL */
2236 if (root_pbl_index == 1) {
2237 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2238 }
2239
2240 if (single_page) {
2241 pbl_count = 0;
2242 } else {
2243 pbl_count = root_pbl_index;
2244 }
2245 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
0145f341
DW		 2246 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2247 &nesmr->pbls_used, &nesmr->pbl_4k);
3c2d774c
GS		 2248
2249 if (ret == 0) {
2250 nesmr->ibmr.rkey = stag;
2251 nesmr->ibmr.lkey = stag;
2252 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2253 ibmr = &nesmr->ibmr;
3c2d774c
GS		 2254 } else {
2255 kfree(nesmr);
2256 ibmr = ERR_PTR(-ENOMEM);
2257 }
2258
2259 reg_phys_err:
2260 /* free the resources */
2261 if (root_pbl_index == 1) {
2262 /* single PBL case */
2263 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2264 } else {
2265 for (i=0; i<root_pbl_index; i++) {
2266 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2267 root_vpbl.leaf_vpbl[i].pbl_pbase);
2268 }
2269 kfree(root_vpbl.leaf_vpbl);
2270 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2271 root_vpbl.pbl_pbase);
2272 }
2273
2274 return ibmr;
2275}
2276
2277
2278/**
2279 * nes_get_dma_mr
2280 */
2281static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2282{
2283 struct ib_phys_buf bl;
2284 u64 kva = 0;
2285
2286 nes_debug(NES_DBG_MR, "\n");
2287
2288 bl.size = (u64)0xffffffffffULL;
2289 bl.addr = 0;
2290 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2291}
2292
2293
2294/**
2295 * nes_reg_user_mr
2296 */
2297static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2298 u64 virt, int acc, struct ib_udata *udata)
2299{
2300 u64 iova_start;
2301 __le64 *pbl;
2302 u64 region_length;
2303 dma_addr_t last_dma_addr = 0;
2304 dma_addr_t first_dma_addr = 0;
2305 struct nes_pd *nespd = to_nespd(pd);
2306 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2307 struct nes_device *nesdev = nesvnic->nesdev;
2308 struct nes_adapter *nesadapter = nesdev->nesadapter;
2309 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
2310 struct ib_umem_chunk *chunk;
2311 struct nes_ucontext *nes_ucontext;
2312 struct nes_pbl *nespbl;
2313 struct nes_mr *nesmr;
2314 struct ib_umem *region;
2315 struct nes_mem_reg_req req;
2316 struct nes_vpbl vpbl;
2317 struct nes_root_vpbl root_vpbl;
2318 int nmap_index, page_index;
2319 int page_count = 0;
2320 int err, pbl_depth = 0;
2321 int chunk_pages;
2322 int ret;
2323 u32 stag;
2324 u32 stag_index = 0;
2325 u32 next_stag_index;
2326 u32 driver_key;
2327 u32 root_pbl_index = 0;
2328 u32 cur_pbl_index = 0;
2329 u32 skip_pages;
2330 u16 pbl_count;
2331 u8 single_page = 1;
2332 u8 stag_key;
2333
cb9fbc5c 2334 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
3c2d774c
GS		 2335 if (IS_ERR(region)) {
2336 return (struct ib_mr *)region;
2337 }
2338
2339 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2340 " offset = %u, page size = %u.\n",
2341 (unsigned long int)start, (unsigned long int)virt, (u32)length,
2342 region->offset, region->page_size);
2343
2344 skip_pages = ((u32)region->offset) >> 12;
2345
e2e435f2
JL		 2346 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2347 ib_umem_release(region);
3c2d774c 2348 return ERR_PTR(-EFAULT);
e2e435f2 2349 }
3c2d774c
GS		 2350 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2351
2352 switch (req.reg_type) {
2353 case IWNES_MEMREG_TYPE_MEM:
2354 pbl_depth = 0;
2355 region_length = 0;
2356 vpbl.pbl_vbase = NULL;
2357 root_vpbl.pbl_vbase = NULL;
2358 root_vpbl.pbl_pbase = 0;
2359
2360 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2361 stag_key = (u8)next_stag_index;
2362
2363 driver_key = next_stag_index & 0x70000000;
2364
2365 next_stag_index >>= 8;
2366 next_stag_index %= nesadapter->max_mr;
2367
2368 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
81821644 2369 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
3c2d774c
GS		 2370 if (err) {
2371 ib_umem_release(region);
2372 return ERR_PTR(err);
2373 }
2374
2375 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2376 if (!nesmr) {
2377 ib_umem_release(region);
2378 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2379 return ERR_PTR(-ENOMEM);
2380 }
2381 nesmr->region = region;
2382
2383 list_for_each_entry(chunk, &region->chunk_list, list) {
2384 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n",
2385 chunk->nents, chunk->nmap);
2386 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2387 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) {
2388 ib_umem_release(region);
2389 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2390 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2391 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index]));
2392 ibmr = ERR_PTR(-EINVAL);
2393 kfree(nesmr);
2394 goto reg_user_mr_err;
2395 }
2396
2397 if (!sg_dma_len(&chunk->page_list[nmap_index])) {
2398 ib_umem_release(region);
2399 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2400 stag_index);
2401 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2402 ibmr = ERR_PTR(-EINVAL);
2403 kfree(nesmr);
2404 goto reg_user_mr_err;
2405 }
2406
2407 region_length += sg_dma_len(&chunk->page_list[nmap_index]);
2408 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2409 region_length -= skip_pages << 12;
2410 for (page_index=skip_pages; page_index < chunk_pages; page_index++) {
2411 skip_pages = 0;
2412 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length)
2413 goto enough_pages;
2414 if ((page_count&0x01FF) == 0) {
24797a34 2415 if (page_count >= 1024 * 512) {
3c2d774c 2416 ib_umem_release(region);
3c2d774c
GS		 2417 nes_free_resource(nesadapter,
2418 nesadapter->allocated_mrs, stag_index);
2419 kfree(nesmr);
2420 ibmr = ERR_PTR(-E2BIG);
2421 goto reg_user_mr_err;
2422 }
2423 if (root_pbl_index == 1) {
2424 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2425 8192, &root_vpbl.pbl_pbase);
2426 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2427 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2428 if (!root_vpbl.pbl_vbase) {
2429 ib_umem_release(region);
2430 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2431 vpbl.pbl_pbase);
2432 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2433 stag_index);
2434 kfree(nesmr);
2435 ibmr = ERR_PTR(-ENOMEM);
2436 goto reg_user_mr_err;
2437 }
2438 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2439 GFP_KERNEL);
2440 if (!root_vpbl.leaf_vpbl) {
2441 ib_umem_release(region);
2442 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2443 root_vpbl.pbl_pbase);
2444 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2445 vpbl.pbl_pbase);
2446 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2447 stag_index);
2448 kfree(nesmr);
2449 ibmr = ERR_PTR(-ENOMEM);
2450 goto reg_user_mr_err;
2451 }
2452 root_vpbl.pbl_vbase[0].pa_low =
2453 cpu_to_le32((u32)vpbl.pbl_pbase);
2454 root_vpbl.pbl_vbase[0].pa_high =
2455 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2456 root_vpbl.leaf_vpbl[0] = vpbl;
2457 }
2458 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2459 &vpbl.pbl_pbase);
2460 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2461 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2462 if (!vpbl.pbl_vbase) {
2463 ib_umem_release(region);
2464 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2465 ibmr = ERR_PTR(-ENOMEM);
2466 kfree(nesmr);
2467 goto reg_user_mr_err;
2468 }
2469 if (1 <= root_pbl_index) {
2470 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2471 cpu_to_le32((u32)vpbl.pbl_pbase);
2472 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2473 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2474 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2475 }
2476 root_pbl_index++;
2477 cur_pbl_index = 0;
2478 }
2479 if (single_page) {
2480 if (page_count != 0) {
2481 if ((last_dma_addr+4096) !=
2482 (sg_dma_address(&chunk->page_list[nmap_index])+
2483 (page_index*4096)))
2484 single_page = 0;
2485 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2486 (page_index*4096);
2487 } else {
2488 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+
2489 (page_index*4096);
2490 last_dma_addr = first_dma_addr;
2491 }
2492 }
2493
2494 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2495 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+
2496 (page_index*4096)));
2497 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2498 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+
2499 (page_index*4096))) >> 32)));
2500 cur_pbl_index++;
2501 page_count++;
2502 }
2503 }
2504 }
2505 enough_pages:
2506 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2507 " stag_key=0x%08x\n",
2508 stag_index, driver_key, stag_key);
2509 stag = stag_index << 8;
2510 stag |= driver_key;
2511 stag += (u32)stag_key;
3c2d774c
GS		 2512
2513 iova_start = virt;
2514 /* Make the leaf PBL the root if only one PBL */
2515 if (root_pbl_index == 1) {
2516 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2517 }
2518
2519 if (single_page) {
2520 pbl_count = 0;
2521 } else {
2522 pbl_count = root_pbl_index;
2523 first_dma_addr = 0;
2524 }
2525 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2526 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2527 stag, (unsigned int)iova_start,
2528 (unsigned int)region_length, stag_index,
2529 (unsigned long long)region->length, pbl_count);
0145f341
DW		 2530 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2531 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2532 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
3c2d774c
GS		 2533
2534 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2535
2536 if (ret == 0) {
2537 nesmr->ibmr.rkey = stag;
2538 nesmr->ibmr.lkey = stag;
2539 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2540 ibmr = &nesmr->ibmr;
3c2d774c
GS		 2541 } else {
2542 ib_umem_release(region);
2543 kfree(nesmr);
2544 ibmr = ERR_PTR(-ENOMEM);
2545 }
2546
2547 reg_user_mr_err:
2548 /* free the resources */
2549 if (root_pbl_index == 1) {
2550 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2551 vpbl.pbl_pbase);
2552 } else {
2553 for (page_index=0; page_index<root_pbl_index; page_index++) {
2554 pci_free_consistent(nesdev->pcidev, 4096,
2555 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2556 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2557 }
2558 kfree(root_vpbl.leaf_vpbl);
2559 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2560 root_vpbl.pbl_pbase);
2561 }
2562
2563 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2564
2565 return ibmr;
3c2d774c
GS		 2566 case IWNES_MEMREG_TYPE_QP:
2567 case IWNES_MEMREG_TYPE_CQ:
7d9c199a
TN		 2568 if (!region->length) {
2569 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2570 ib_umem_release(region);
2571 return ERR_PTR(-EINVAL);
2572 }
3c2d774c
GS		 2573 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2574 if (!nespbl) {
2575 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2576 ib_umem_release(region);
2577 return ERR_PTR(-ENOMEM);
2578 }
2579 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2580 if (!nesmr) {
2581 ib_umem_release(region);
2582 kfree(nespbl);
2583 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2584 return ERR_PTR(-ENOMEM);
2585 }
2586 nesmr->region = region;
2587 nes_ucontext = to_nesucontext(pd->uobject->context);
2588 pbl_depth = region->length >> 12;
2589 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2590 nespbl->pbl_size = pbl_depth*sizeof(u64);
2591 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2592 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2593 } else {
2594 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2595 }
2596
2597 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2598 nespbl->pbl_size, pbl_depth);
2599 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2600 &nespbl->pbl_pbase);
2601 if (!pbl) {
2602 ib_umem_release(region);
2603 kfree(nesmr);
2604 kfree(nespbl);
2605 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2606 return ERR_PTR(-ENOMEM);
2607 }
2608
2609 nespbl->pbl_vbase = (u64 *)pbl;
2610 nespbl->user_base = start;
71e0957c 2611 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
3c2d774c 2612 " pbl_vbase=%p user_base=0x%lx\n",
71e0957c
RD		 2613 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2614 (void *) nespbl->pbl_vbase, nespbl->user_base);
3c2d774c
GS		 2615
2616 list_for_each_entry(chunk, &region->chunk_list, list) {
2617 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) {
2618 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12;
2619 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0;
2620 nespbl->page = sg_page(&chunk->page_list[0]);
2621 for (page_index=0; page_index<chunk_pages; page_index++) {
2622 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2623 (sg_dma_address(&chunk->page_list[nmap_index])+
2624 (page_index*4096)));
2625 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2626 (sg_dma_address(&chunk->page_list[nmap_index])+
2627 (page_index*4096)))>>32);
2628 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2629 (unsigned long long)*pbl,
2630 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2631 pbl++;
2632 }
2633 }
2634 }
2635 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2636 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2637 } else {
2638 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2639 }
2640 nesmr->ibmr.rkey = -1;
2641 nesmr->ibmr.lkey = -1;
2642 nesmr->mode = req.reg_type;
2643 return &nesmr->ibmr;
3c2d774c
GS		 2644 }
2645
e2e435f2 2646 ib_umem_release(region);
3c2d774c
GS		 2647 return ERR_PTR(-ENOSYS);
2648}
2649
2650
2651/**
2652 * nes_dereg_mr
2653 */
2654static int nes_dereg_mr(struct ib_mr *ib_mr)
2655{
2656 struct nes_mr *nesmr = to_nesmr(ib_mr);
2657 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2658 struct nes_device *nesdev = nesvnic->nesdev;
2659 struct nes_adapter *nesadapter = nesdev->nesadapter;
2660 struct nes_hw_cqp_wqe *cqp_wqe;
2661 struct nes_cqp_request *cqp_request;
2662 unsigned long flags;
2663 int ret;
2664 u16 major_code;
2665 u16 minor_code;
2666
2667 if (nesmr->region) {
2668 ib_umem_release(nesmr->region);
2669 }
2670 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2671 kfree(nesmr);
2672 return 0;
2673 }
2674
2675 /* Deallocate the region with the adapter */
2676
2677 cqp_request = nes_get_cqp_request(nesdev);
2678 if (cqp_request == NULL) {
2679 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2680 return -ENOMEM;
2681 }
2682 cqp_request->waiting = 1;
2683 cqp_wqe = &cqp_request->cqp_wqe;
2684
3c2d774c
GS		 2685 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2686 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2687 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2688 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2689 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2690
2691 atomic_set(&cqp_request->refcount, 2);
8294f297 2692 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 2693
2694 /* Wait for CQP */
2695 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2696 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2697 NES_EVENT_TIMEOUT);
2698 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2699 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2700 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2701
3c2d774c
GS		 2702 major_code = cqp_request->major_code;
2703 minor_code = cqp_request->minor_code;
1ff66e8c
RD		 2704
2705 nes_put_cqp_request(nesdev, cqp_request);
2706
3c2d774c
GS		 2707 if (!ret) {
2708 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2709 " ib_mr=%p, rkey = 0x%08X\n",
2710 ib_mr, ib_mr->rkey);
2711 return -ETIME;
2712 } else if (major_code) {
2713 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2714 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2715 major_code, minor_code, ib_mr, ib_mr->rkey);
2716 return -EIO;
dae5d13a
DW		 2717 }
2718
2719 if (nesmr->pbls_used != 0) {
2720 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2721 if (nesmr->pbl_4k) {
2722 nesadapter->free_4kpbl += nesmr->pbls_used;
2723 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2724 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2725 "exceeded the max(%u)\n",
2726 nesadapter->free_4kpbl,
2727 nesadapter->max_4kpbl);
2728 } else {
2729 nesadapter->free_256pbl += nesmr->pbls_used;
2730 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2731 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2732 "exceeded the max(%u)\n",
2733 nesadapter->free_256pbl,
2734 nesadapter->max_256pbl);
2735 }
2736 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2737 }
2738 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2739 (ib_mr->rkey & 0x0fffff00) >> 8);
2740
2741 kfree(nesmr);
2742
2743 return 0;
3c2d774c
GS		 2744}
2745
2746
2747/**
2748 * show_rev
2749 */
f4e91eb4
TJ		 2750static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2751 char *buf)
3c2d774c
GS		 2752{
2753 struct nes_ib_device *nesibdev =
f4e91eb4 2754 container_of(dev, struct nes_ib_device, ibdev.dev);
3c2d774c
GS		 2755 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2756
2757 nes_debug(NES_DBG_INIT, "\n");
2758 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2759}
2760
2761
2762/**
2763 * show_fw_ver
2764 */
f4e91eb4
TJ		 2765static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2766 char *buf)
3c2d774c
GS		 2767{
2768 struct nes_ib_device *nesibdev =
f4e91eb4 2769 container_of(dev, struct nes_ib_device, ibdev.dev);
3c2d774c
GS		 2770 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2771
2772 nes_debug(NES_DBG_INIT, "\n");
0e4562da
CT		 2773 return sprintf(buf, "%u.%u\n",
2774 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2775 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
3c2d774c
GS		 2776}
2777
2778
2779/**
2780 * show_hca
2781 */
f4e91eb4
TJ		 2782static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2783 char *buf)
3c2d774c
GS		 2784{
2785 nes_debug(NES_DBG_INIT, "\n");
2786 return sprintf(buf, "NES020\n");
2787}
2788
2789
2790/**
2791 * show_board
2792 */
f4e91eb4
TJ		 2793static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2794 char *buf)
3c2d774c
GS		 2795{
2796 nes_debug(NES_DBG_INIT, "\n");
2797 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2798}
2799
2800
f4e91eb4
TJ		 2801static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2802static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2803static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2804static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
3c2d774c 2805
f4e91eb4
TJ		 2806static struct device_attribute *nes_dev_attributes[] = {
2807 &dev_attr_hw_rev,
2808 &dev_attr_fw_ver,
2809 &dev_attr_hca_type,
2810 &dev_attr_board_id
3c2d774c
GS		 2811};
2812
2813
2814/**
2815 * nes_query_qp
2816 */
2817static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2818 int attr_mask, struct ib_qp_init_attr *init_attr)
2819{
2820 struct nes_qp *nesqp = to_nesqp(ibqp);
2821
2822 nes_debug(NES_DBG_QP, "\n");
2823
2824 attr->qp_access_flags = 0;
2825 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2826 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2827 attr->cap.max_recv_sge = 1;
eadde3a1
CT		 2828 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2829 attr->cap.max_inline_data = 0;
2830 else
2831 attr->cap.max_inline_data = 64;
3c2d774c
GS		 2832
2833 init_attr->event_handler = nesqp->ibqp.event_handler;
2834 init_attr->qp_context = nesqp->ibqp.qp_context;
2835 init_attr->send_cq = nesqp->ibqp.send_cq;
2836 init_attr->recv_cq = nesqp->ibqp.recv_cq;
4127c365 2837 init_attr->srq = nesqp->ibqp.srq;
3c2d774c
GS		 2838 init_attr->cap = attr->cap;
2839
2840 return 0;
2841}
2842
2843
2844/**
2845 * nes_hw_modify_qp
2846 */
2847int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
8b1c9dc4 2848 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
3c2d774c
GS		 2849{
2850 struct nes_hw_cqp_wqe *cqp_wqe;
2851 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2852 /* struct iw_cm_event cm_event; */
2853 struct nes_cqp_request *cqp_request;
3c2d774c
GS		 2854 int ret;
2855 u16 major_code;
2856
2857 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2858 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2859
2860 cqp_request = nes_get_cqp_request(nesdev);
2861 if (cqp_request == NULL) {
2862 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2863 return -ENOMEM;
2864 }
2865 if (wait_completion) {
2866 cqp_request->waiting = 1;
2867 } else {
2868 cqp_request->waiting = 0;
2869 }
2870 cqp_wqe = &cqp_request->cqp_wqe;
2871
2872 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2873 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2874 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2875 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2876 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2877 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2878 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2879
8b1c9dc4
DW		 2880 /* If sending a terminate message, fill in the length (in words) */
2881 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2882 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2883 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2884 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2885 }
2886
3c2d774c 2887 atomic_set(&cqp_request->refcount, 2);
8294f297 2888 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 2889
2890 /* Wait for CQP */
2891 if (wait_completion) {
2892 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2893 nesqp->hwqp.qp_id); */
2894 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2895 NES_EVENT_TIMEOUT);
2896 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2897 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2898 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2899 major_code = cqp_request->major_code;
2900 if (major_code) {
2901 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2902 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2903 nesqp->hwqp.qp_id, cqp_request->major_code,
2904 cqp_request->minor_code, next_iwarp_state);
2905 }
1ff66e8c
RD		 2906
2907 nes_put_cqp_request(nesdev, cqp_request);
2908
3c2d774c
GS		 2909 if (!ret)
2910 return -ETIME;
2911 else if (major_code)
2912 return -EIO;
2913 else
2914 return 0;
2915 } else {
2916 return 0;
2917 }
2918}
2919
2920
2921/**
2922 * nes_modify_qp
2923 */
2924int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2925 int attr_mask, struct ib_udata *udata)
2926{
2927 struct nes_qp *nesqp = to_nesqp(ibqp);
2928 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2929 struct nes_device *nesdev = nesvnic->nesdev;
2930 /* u32 cqp_head; */
2931 /* u32 counter; */
2932 u32 next_iwarp_state = 0;
2933 int err;
2934 unsigned long qplockflags;
2935 int ret;
2936 u16 original_last_aeq;
2937 u8 issue_modify_qp = 0;
3c2d774c
GS		 2938 u8 dont_wait = 0;
2939
2940 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2941 " iwarp_state=0x%X, refcount=%d\n",
2942 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2943 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2944
3c2d774c
GS		 2945 spin_lock_irqsave(&nesqp->lock, qplockflags);
2946
2947 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2948 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2949 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2950 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2951
2952 if (attr_mask & IB_QP_STATE) {
2953 switch (attr->qp_state) {
2954 case IB_QPS_INIT:
2955 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2956 nesqp->hwqp.qp_id);
2957 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2958 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2959 return -EINVAL;
2960 }
2961 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2962 issue_modify_qp = 1;
2963 break;
2964 case IB_QPS_RTR:
2965 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2966 nesqp->hwqp.qp_id);
2967 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2968 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2969 return -EINVAL;
2970 }
2971 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2972 issue_modify_qp = 1;
2973 break;
2974 case IB_QPS_RTS:
2975 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2976 nesqp->hwqp.qp_id);
2977 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2978 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2979 return -EINVAL;
2980 }
2981 if (nesqp->cm_id == NULL) {
2982 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2983 nesqp->hwqp.qp_id );
2984 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2985 return -EINVAL;
2986 }
2987 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2988 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2989 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2990 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2991 issue_modify_qp = 1;
2992 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2993 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2994 nesqp->hte_added = 1;
2995 break;
2996 case IB_QPS_SQD:
2997 issue_modify_qp = 1;
2998 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2999 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3000 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3001 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 3002 return 0;
3003 } else {
3004 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3005 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3006 " ignored due to current iWARP state\n",
3007 nesqp->hwqp.qp_id);
3008 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 3009 return -EINVAL;
3010 }
3011 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3012 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3013 " already done based on hw state.\n",
3014 nesqp->hwqp.qp_id);
3015 issue_modify_qp = 0;
3c2d774c
GS		 3016 }
3017 switch (nesqp->hw_iwarp_state) {
3018 case NES_AEQE_IWARP_STATE_CLOSING:
3019 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
d5fb476a 3020 break;
3c2d774c
GS		 3021 case NES_AEQE_IWARP_STATE_TERMINATE:
3022 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3023 break;
3024 case NES_AEQE_IWARP_STATE_ERROR:
3025 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3026 break;
3027 default:
3028 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3c2d774c
GS		 3029 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3030 break;
3031 }
3032 }
3033 break;
3034 case IB_QPS_SQE:
3035 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3036 nesqp->hwqp.qp_id);
3037 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3038 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 3039 return -EINVAL;
3040 }
3041 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3042 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3043 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3044 issue_modify_qp = 1;
3c2d774c
GS		 3045 break;
3046 case IB_QPS_ERR:
3047 case IB_QPS_RESET:
3048 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3049 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 3050 return -EINVAL;
3051 }
3052 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3053 nesqp->hwqp.qp_id);
8b1c9dc4
DW		 3054 if (nesqp->term_flags)
3055 del_timer(&nesqp->terminate_timer);
3056
3c2d774c
GS		 3057 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3058 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3059 if (nesqp->hte_added) {
3060 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3061 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3062 nesqp->hte_added = 0;
3063 }
3064 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
cd6860eb 3065 (nesdev->iw_status) &&
3c2d774c
GS		 3066 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3067 next_iwarp_state |= NES_CQP_QP_RESET;
3c2d774c
GS		 3068 } else {
3069 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3070 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3071 dont_wait = 1;
3072 }
3073 issue_modify_qp = 1;
3074 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3075 break;
3076 default:
3077 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 3078 return -EINVAL;
3079 break;
3080 }
3081
3082 nesqp->ibqp_state = attr->qp_state;
a67b078c
TN		 3083 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3084 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3085 nesqp->iwarp_state);
3c2d774c
GS		 3086 }
3087
3088 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3089 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3090 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3091 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3092 issue_modify_qp = 1;
3093 }
3094 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3095 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3096 issue_modify_qp = 1;
3097 }
3098 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3099 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3100 issue_modify_qp = 1;
3101 }
3102 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3103 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3104 issue_modify_qp = 1;
3105 }
3106
3107 if (nesqp->user_mode) {
3108 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3109 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3110 issue_modify_qp = 1;
3111 }
3112 }
3113
3114 original_last_aeq = nesqp->last_aeq;
3115 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3116
3117 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3118
3119 ret = 0;
3120
3121
3122 if (issue_modify_qp) {
3123 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
8b1c9dc4 3124 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3c2d774c
GS		 3125 if (ret)
3126 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3127 " failed for QP%u.\n",
3128 next_iwarp_state, nesqp->hwqp.qp_id);
3129
3130 }
3131
3132 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3133 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3134 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3135 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3136 original_last_aeq, nesqp->last_aeq);
3137 if ((!ret) ||
3138 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) &&
3139 (ret))) {
3140 if (dont_wait) {
3141 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3142 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3143 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3144 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3145 original_last_aeq, nesqp->last_aeq);
3146 /* this one is for the cm_disconnect thread */
3c2d774c
GS		 3147 spin_lock_irqsave(&nesqp->lock, qplockflags);
3148 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3149 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3150 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3151 nes_cm_disconn(nesqp);
3152 } else {
3153 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3154 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3c2d774c
GS		 3155 }
3156 } else {
3157 spin_lock_irqsave(&nesqp->lock, qplockflags);
3158 if (nesqp->cm_id) {
3159 /* These two are for the timer thread */
3160 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3c2d774c
GS		 3161 nesqp->cm_id->add_ref(nesqp->cm_id);
3162 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3163 " need ae to finish up, original_last_aeq = 0x%04X."
3164 " last_aeq = 0x%04X, scheduling timer.\n",
3165 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3166 original_last_aeq, nesqp->last_aeq);
3167 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3168 }
3169 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3170 } else {
3171 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3172 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3173 " need ae to finish up, original_last_aeq = 0x%04X."
3174 " last_aeq = 0x%04X.\n",
3175 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3176 original_last_aeq, nesqp->last_aeq);
3177 }
3178 }
3179 } else {
3180 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3181 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3182 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3183 original_last_aeq, nesqp->last_aeq);
3c2d774c
GS		 3184 }
3185 } else {
3186 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3187 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3188 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3189 original_last_aeq, nesqp->last_aeq);
3c2d774c
GS		 3190 }
3191
3192 err = 0;
3193
3194 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3195 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3196
3197 return err;
3198}
3199
3200
3201/**
3202 * nes_muticast_attach
3203 */
3204static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3205{
3206 nes_debug(NES_DBG_INIT, "\n");
3207 return -ENOSYS;
3208}
3209
3210
3211/**
3212 * nes_multicast_detach
3213 */
3214static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3215{
3216 nes_debug(NES_DBG_INIT, "\n");
3217 return -ENOSYS;
3218}
3219
3220
3221/**
3222 * nes_process_mad
3223 */
3224static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
3225 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh,
3226 struct ib_mad *in_mad, struct ib_mad *out_mad)
3227{
3228 nes_debug(NES_DBG_INIT, "\n");
3229 return -ENOSYS;
3230}
3231
3232static inline void
3233fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3234{
3235 int sge_index;
3236 int total_payload_length = 0;
3237 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3238 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3239 ib_wr->sg_list[sge_index].addr);
3240 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3241 ib_wr->sg_list[sge_index].length);
3242 if (uselkey)
3243 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3244 (ib_wr->sg_list[sge_index].lkey));
3245 else
3246 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3247
3248 total_payload_length += ib_wr->sg_list[sge_index].length;
3249 }
3250 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3251 total_payload_length);
3252 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3253 total_payload_length);
3254}
3255
3256/**
3257 * nes_post_send
3258 */
3259static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3260 struct ib_send_wr **bad_wr)
3261{
3262 u64 u64temp;
3263 unsigned long flags = 0;
3264 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3265 struct nes_device *nesdev = nesvnic->nesdev;
3266 struct nes_qp *nesqp = to_nesqp(ibqp);
3267 struct nes_hw_qp_wqe *wqe;
649fe4ae 3268 int err = 0;
3c2d774c
GS		 3269 u32 qsize = nesqp->hwqp.sq_size;
3270 u32 head;
649fe4ae
CT		 3271 u32 wqe_misc = 0;
3272 u32 wqe_count = 0;
3c2d774c 3273 u32 counter;
3c2d774c 3274
e5dec394
FZ		 3275 if (nesqp->ibqp_state > IB_QPS_RTS) {
3276 err = -EINVAL;
3277 goto out;
3278 }
3c2d774c 3279
5880ff19 3280 spin_lock_irqsave(&nesqp->lock, flags);
3c2d774c
GS		 3281
3282 head = nesqp->hwqp.sq_head;
3283
3284 while (ib_wr) {
8b1c9dc4
DW		 3285 /* Check for QP error */
3286 if (nesqp->term_flags) {
3287 err = -EINVAL;
3288 break;
3289 }
3290
3c2d774c
GS		 3291 /* Check for SQ overflow */
3292 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
831d06cf 3293 err = -ENOMEM;
3c2d774c
GS		 3294 break;
3295 }
3296
3297 wqe = &nesqp->hwqp.sq_vbase[head];
3298 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3299 nesqp->hwqp.qp_id, wqe, head); */
3300 nes_fill_init_qp_wqe(wqe, nesqp, head);
3301 u64temp = (u64)(ib_wr->wr_id);
3302 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3303 u64temp);
649fe4ae
CT		 3304 switch (ib_wr->opcode) {
3305 case IB_WR_SEND:
3306 case IB_WR_SEND_WITH_INV:
3307 if (IB_WR_SEND == ib_wr->opcode) {
3308 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3309 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3310 else
3311 wqe_misc = NES_IWARP_SQ_OP_SEND;
3312 } else {
3313 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3314 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3315 else
3316 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3c2d774c 3317
649fe4ae
CT		 3318 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3319 ib_wr->ex.invalidate_rkey);
3320 }
3c2d774c 3321
649fe4ae
CT		 3322 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3323 err = -EINVAL;
3324 break;
3c2d774c
GS		 3325 }
3326
649fe4ae
CT		 3327 if (ib_wr->send_flags & IB_SEND_FENCE)
3328 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3329
3330 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3331 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3332 (ib_wr->sg_list[0].length <= 64)) {
3333 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3334 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3335 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3336 ib_wr->sg_list[0].length);
3337 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3338 } else {
3339 fill_wqe_sg_send(wqe, ib_wr, 1);
3340 }
3341
3342 break;
3343 case IB_WR_RDMA_WRITE:
3344 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3345 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3346 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3347 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3348 err = -EINVAL;
3349 break;
3350 }
3351
3352 if (ib_wr->send_flags & IB_SEND_FENCE)
3353 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3354
3355 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3356 ib_wr->wr.rdma.rkey);
3357 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3358 ib_wr->wr.rdma.remote_addr);
3359
3360 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3361 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3362 (ib_wr->sg_list[0].length <= 64)) {
3363 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3364 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3365 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3366 ib_wr->sg_list[0].length);
3367 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3368 } else {
3369 fill_wqe_sg_send(wqe, ib_wr, 1);
3370 }
3371
3372 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3373 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3374 break;
3375 case IB_WR_RDMA_READ:
3376 case IB_WR_RDMA_READ_WITH_INV:
3377 /* iWARP only supports 1 sge for RDMA reads */
3378 if (ib_wr->num_sge > 1) {
3379 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3380 ib_wr->num_sge);
3381 err = -EINVAL;
3382 break;
3383 }
3384 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3385 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3386 } else {
3387 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3388 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3389 ib_wr->ex.invalidate_rkey);
3390 }
3391
3392 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3393 ib_wr->wr.rdma.remote_addr);
3394 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3395 ib_wr->wr.rdma.rkey);
3396 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3397 ib_wr->sg_list->length);
3398 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3399 ib_wr->sg_list->addr);
3400 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3401 ib_wr->sg_list->lkey);
3402 break;
3403 case IB_WR_LOCAL_INV:
3404 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3405 set_wqe_32bit_value(wqe->wqe_words,
3406 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3407 ib_wr->ex.invalidate_rkey);
3408 break;
e293a26f
CT		 3409 case IB_WR_FAST_REG_MR:
3410 {
3411 int i;
3412 int flags = ib_wr->wr.fast_reg.access_flags;
3413 struct nes_ib_fast_reg_page_list *pnesfrpl =
3414 container_of(ib_wr->wr.fast_reg.page_list,
3415 struct nes_ib_fast_reg_page_list,
3416 ibfrpl);
3417 u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
3418 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
3419
3420 if (ib_wr->wr.fast_reg.page_list_len >
3421 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3422 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3423 err = -EINVAL;
3424 break;
3425 }
3426 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3427 set_wqe_64bit_value(wqe->wqe_words,
3428 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3429 ib_wr->wr.fast_reg.iova_start);
3430 set_wqe_32bit_value(wqe->wqe_words,
3431 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3432 ib_wr->wr.fast_reg.length);
94f622bd
TN		 3433 set_wqe_32bit_value(wqe->wqe_words,
3434 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
e293a26f
CT		 3435 set_wqe_32bit_value(wqe->wqe_words,
3436 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3437 ib_wr->wr.fast_reg.rkey);
3438 /* Set page size: */
3439 if (ib_wr->wr.fast_reg.page_shift == 12) {
3440 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3441 } else if (ib_wr->wr.fast_reg.page_shift == 21) {
3442 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3443 } else {
3444 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3445 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3446 err = -EINVAL;
3447 break;
3448 }
3449 /* Set access_flags */
3450 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3451 if (flags & IB_ACCESS_LOCAL_WRITE)
3452 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3453
3454 if (flags & IB_ACCESS_REMOTE_WRITE)
3455 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3456
3457 if (flags & IB_ACCESS_REMOTE_READ)
3458 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3459
3460 if (flags & IB_ACCESS_MW_BIND)
3461 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3462
3463 /* Fill in PBL info: */
3464 if (ib_wr->wr.fast_reg.page_list_len >
3465 pnesfrpl->ibfrpl.max_page_list_len) {
3466 nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
3467 " ib_wr=%p, value=%u, max=%u\n",
3468 ib_wr, ib_wr->wr.fast_reg.page_list_len,
3469 pnesfrpl->ibfrpl.max_page_list_len);
3470 err = -EINVAL;
3471 break;
3472 }
3473
3474 set_wqe_64bit_value(wqe->wqe_words,
3475 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3476 pnesfrpl->nes_wqe_pbl.paddr);
3477
3478 set_wqe_32bit_value(wqe->wqe_words,
3479 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3480 ib_wr->wr.fast_reg.page_list_len * 8);
3481
3482 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++)
3483 dst_page_list[i] = cpu_to_le64(src_page_list[i]);
3484
183ae74b
RD		 3485 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %llx, "
3486 "length: %d, rkey: %0x, pgl_paddr: %llx, "
e293a26f 3487 "page_list_len: %u, wqe_misc: %x\n",
183ae74b 3488 (unsigned long long) ib_wr->wr.fast_reg.iova_start,
e293a26f
CT		 3489 ib_wr->wr.fast_reg.length,
3490 ib_wr->wr.fast_reg.rkey,
183ae74b 3491 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr,
e293a26f
CT		 3492 ib_wr->wr.fast_reg.page_list_len,
3493 wqe_misc);
3494 break;
3495 }
649fe4ae
CT		 3496 default:
3497 /* error */
3498 err = -EINVAL;
3499 break;
3500 }
3501
e5dec394
FZ		 3502 if (err)
3503 break;
3504
d14152da 3505 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3c2d774c 3506 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
d14152da 3507
3c2d774c
GS		 3508 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3509
3510 ib_wr = ib_wr->next;
3511 head++;
3512 wqe_count++;
3513 if (head >= qsize)
3514 head = 0;
3515
3516 }
3517
3518 nesqp->hwqp.sq_head = head;
3519 barrier();
3520 while (wqe_count) {
3521 counter = min(wqe_count, ((u32)255));
3522 wqe_count -= counter;
3523 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3524 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3525 }
3526
5880ff19 3527 spin_unlock_irqrestore(&nesqp->lock, flags);
3c2d774c 3528
e5dec394 3529out:
3c2d774c
GS		 3530 if (err)
3531 *bad_wr = ib_wr;
3532 return err;
3533}
3534
3535
3536/**
3537 * nes_post_recv
3538 */
3539static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3540 struct ib_recv_wr **bad_wr)
3541{
3542 u64 u64temp;
3543 unsigned long flags = 0;
3544 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3545 struct nes_device *nesdev = nesvnic->nesdev;
3546 struct nes_qp *nesqp = to_nesqp(ibqp);
3547 struct nes_hw_qp_wqe *wqe;
3548 int err = 0;
3549 int sge_index;
3550 u32 qsize = nesqp->hwqp.rq_size;
3551 u32 head;
3552 u32 wqe_count = 0;
3553 u32 counter;
3554 u32 total_payload_length;
3555
4293fdc1
FZ		 3556 if (nesqp->ibqp_state > IB_QPS_RTS) {
3557 err = -EINVAL;
3558 goto out;
3559 }
3c2d774c 3560
5880ff19 3561 spin_lock_irqsave(&nesqp->lock, flags);
3c2d774c
GS		 3562
3563 head = nesqp->hwqp.rq_head;
3564
3565 while (ib_wr) {
8b1c9dc4
DW		 3566 /* Check for QP error */
3567 if (nesqp->term_flags) {
3568 err = -EINVAL;
3569 break;
3570 }
3571
3c2d774c
GS		 3572 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3573 err = -EINVAL;
3574 break;
3575 }
3576 /* Check for RQ overflow */
3577 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
831d06cf 3578 err = -ENOMEM;
3c2d774c
GS		 3579 break;
3580 }
3581
3582 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3583 wqe = &nesqp->hwqp.rq_vbase[head];
3584
3585 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3586 nesqp->hwqp.qp_id, wqe, head); */
3587 nes_fill_init_qp_wqe(wqe, nesqp, head);
3588 u64temp = (u64)(ib_wr->wr_id);
3589 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3590 u64temp);
3591 total_payload_length = 0;
3592 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3593 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3594 ib_wr->sg_list[sge_index].addr);
3595 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3596 ib_wr->sg_list[sge_index].length);
3597 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3598 ib_wr->sg_list[sge_index].lkey);
3599
3600 total_payload_length += ib_wr->sg_list[sge_index].length;
3601 }
3602 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3603 total_payload_length);
3604
3605 ib_wr = ib_wr->next;
3606 head++;
3607 wqe_count++;
3608 if (head >= qsize)
3609 head = 0;
3610 }
3611
3612 nesqp->hwqp.rq_head = head;
3613 barrier();
3614 while (wqe_count) {
3615 counter = min(wqe_count, ((u32)255));
3616 wqe_count -= counter;
3617 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3618 }
3619
5880ff19 3620 spin_unlock_irqrestore(&nesqp->lock, flags);
3c2d774c 3621
4293fdc1 3622out:
3c2d774c
GS		 3623 if (err)
3624 *bad_wr = ib_wr;
3625 return err;
3626}
3627
3628
3629/**
3630 * nes_poll_cq
3631 */
3632static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3633{
3634 u64 u64temp;
3635 u64 wrid;
3c2d774c
GS		 3636 unsigned long flags = 0;
3637 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3638 struct nes_device *nesdev = nesvnic->nesdev;
3639 struct nes_cq *nescq = to_nescq(ibcq);
3640 struct nes_qp *nesqp;
3641 struct nes_hw_cqe cqe;
3642 u32 head;
6eed5e7c 3643 u32 wq_tail = 0;
3c2d774c
GS		 3644 u32 cq_size;
3645 u32 cqe_count = 0;
3646 u32 wqe_index;
3647 u32 u32temp;
6eed5e7c
DW		 3648 u32 move_cq_head = 1;
3649 u32 err_code;
3c2d774c
GS		 3650
3651 nes_debug(NES_DBG_CQ, "\n");
3652
5880ff19 3653 spin_lock_irqsave(&nescq->lock, flags);
3c2d774c
GS		 3654
3655 head = nescq->hw_cq.cq_head;
3656 cq_size = nescq->hw_cq.cq_size;
3657
3658 while (cqe_count < num_entries) {
5ee21fe0
DW		 3659 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3660 NES_CQE_VALID) == 0)
3661 break;
3662
3663 /*
3664 * Make sure we read CQ entry contents *after*
3665 * we've checked the valid bit.
3666 */
3667 rmb();
3668
3669 cqe = nescq->hw_cq.cq_vbase[head];
5ee21fe0
DW		 3670 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3671 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3672 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3673 /* parse CQE, get completion context from WQE (either rq or sq) */
3674 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3675 ((u64)u32temp);
3676
3677 if (u64temp) {
3678 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3c2d774c
GS		 3679 memset(entry, 0, sizeof *entry);
3680 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3681 entry->status = IB_WC_SUCCESS;
3682 } else {
320cdfd2
DW		 3683 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3684 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3685 entry->status = err_code & 0x0000ffff;
3686
3687 /* The rest of the cqe's will be marked as flushed */
3688 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3689 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3690 NES_IWARP_CQE_MINOR_FLUSH);
3691 } else
3692 entry->status = IB_WC_WR_FLUSH_ERR;
3c2d774c
GS		 3693 }
3694
3695 entry->qp = &nesqp->ibqp;
3696 entry->src_qp = nesqp->hwqp.qp_id;
3697
3698 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3699 if (nesqp->skip_lsmm) {
3700 nesqp->skip_lsmm = 0;
5ee21fe0 3701 nesqp->hwqp.sq_tail++;
3c2d774c
GS		 3702 }
3703
3704 /* Working on a SQ Completion*/
6eed5e7c 3705 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c 3706 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
6eed5e7c 3707 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c 3708 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
6eed5e7c 3709 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c
GS		 3710 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3711
6eed5e7c 3712 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c
GS		 3713 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3714 case NES_IWARP_SQ_OP_RDMAW:
3715 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3716 entry->opcode = IB_WC_RDMA_WRITE;
3717 break;
3718 case NES_IWARP_SQ_OP_RDMAR:
3719 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3720 entry->opcode = IB_WC_RDMA_READ;
6eed5e7c 3721 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c
GS		 3722 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3723 break;
3724 case NES_IWARP_SQ_OP_SENDINV:
3725 case NES_IWARP_SQ_OP_SENDSEINV:
3726 case NES_IWARP_SQ_OP_SEND:
3727 case NES_IWARP_SQ_OP_SENDSE:
3728 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3729 entry->opcode = IB_WC_SEND;
3730 break;
649fe4ae 3731 case NES_IWARP_SQ_OP_LOCINV:
4a4b03f4 3732 entry->opcode = IB_WC_LOCAL_INV;
649fe4ae 3733 break;
e293a26f
CT		 3734 case NES_IWARP_SQ_OP_FAST_REG:
3735 entry->opcode = IB_WC_FAST_REG_MR;
3736 break;
3c2d774c 3737 }
6eed5e7c
DW		 3738
3739 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3740 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3741 move_cq_head = 0;
3742 wq_tail = nesqp->hwqp.sq_tail;
3743 }
3c2d774c
GS		 3744 } else {
3745 /* Working on a RQ Completion*/
3c2d774c 3746 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
6eed5e7c
DW		 3747 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3748 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3c2d774c 3749 entry->opcode = IB_WC_RECV;
6eed5e7c
DW		 3750
3751 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3752 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3753 move_cq_head = 0;
3754 wq_tail = nesqp->hwqp.rq_tail;
3755 }
3c2d774c 3756 }
3c2d774c 3757
5ee21fe0 3758 entry->wr_id = wrid;
3c2d774c 3759 entry++;
5ee21fe0
DW		 3760 cqe_count++;
3761 }
3762
6eed5e7c
DW		 3763 if (move_cq_head) {
3764 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3765 if (++head >= cq_size)
3766 head = 0;
3767 nescq->polled_completions++;
5ee21fe0 3768
6eed5e7c
DW		 3769 if ((nescq->polled_completions > (cq_size / 2)) ||
3770 (nescq->polled_completions == 255)) {
3771 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
5ee21fe0
DW		 3772 " are pending %u of %u.\n",
3773 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
6eed5e7c 3774 nes_write32(nesdev->regs+NES_CQE_ALLOC,
5ee21fe0 3775 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
6eed5e7c
DW		 3776 nescq->polled_completions = 0;
3777 }
3778 } else {
3779 /* Update the wqe index and set status to flush */
3780 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3781 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3782 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3783 cpu_to_le32(wqe_index);
3784 move_cq_head = 1; /* ready for next pass */
5ee21fe0 3785 }
3c2d774c
GS		 3786 }
3787
3788 if (nescq->polled_completions) {
3789 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3790 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3791 nescq->polled_completions = 0;
3792 }
3793
3794 nescq->hw_cq.cq_head = head;
3795 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3796 cqe_count, nescq->hw_cq.cq_number);
3797
5880ff19 3798 spin_unlock_irqrestore(&nescq->lock, flags);
3c2d774c
GS		 3799
3800 return cqe_count;
3801}
3802
3803
3804/**
3805 * nes_req_notify_cq
3806 */
3807static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3808 {
3809 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3810 struct nes_device *nesdev = nesvnic->nesdev;
3811 struct nes_cq *nescq = to_nescq(ibcq);
3812 u32 cq_arm;
3813
3814 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3815 nescq->hw_cq.cq_number);
3816
3817 cq_arm = nescq->hw_cq.cq_number;
3818 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3819 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3820 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3821 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3822 else
3823 return -EINVAL;
3824
3825 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3826 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3827
3828 return 0;
3829}
3830
3831
3832/**
3833 * nes_init_ofa_device
3834 */
3835struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3836{
3837 struct nes_ib_device *nesibdev;
3838 struct nes_vnic *nesvnic = netdev_priv(netdev);
3839 struct nes_device *nesdev = nesvnic->nesdev;
3840
3841 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3842 if (nesibdev == NULL) {
3843 return NULL;
3844 }
3845 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3846 nesibdev->ibdev.owner = THIS_MODULE;
3847
3848 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3849 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3850 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3851
3852 nesibdev->ibdev.uverbs_cmd_mask =
3853 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3854 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3855 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3856 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3857 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3858 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3859 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3860 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3861 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3862 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3863 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3864 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3865 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3866 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3867 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3868 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3869 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3870 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3871 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3872 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3873 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3874 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3875
3876 nesibdev->ibdev.phys_port_cnt = 1;
3877 nesibdev->ibdev.num_comp_vectors = 1;
3878 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
f4e91eb4 3879 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3c2d774c
GS		 3880 nesibdev->ibdev.query_device = nes_query_device;
3881 nesibdev->ibdev.query_port = nes_query_port;
3c2d774c
GS		 3882 nesibdev->ibdev.query_pkey = nes_query_pkey;
3883 nesibdev->ibdev.query_gid = nes_query_gid;
3884 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3885 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3886 nesibdev->ibdev.mmap = nes_mmap;
3887 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3888 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3889 nesibdev->ibdev.create_ah = nes_create_ah;
3890 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3891 nesibdev->ibdev.create_qp = nes_create_qp;
3892 nesibdev->ibdev.modify_qp = nes_modify_qp;
3893 nesibdev->ibdev.query_qp = nes_query_qp;
3894 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3895 nesibdev->ibdev.create_cq = nes_create_cq;
3896 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3897 nesibdev->ibdev.poll_cq = nes_poll_cq;
3898 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3899 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3900 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3901 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3902 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3903 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3904 nesibdev->ibdev.bind_mw = nes_bind_mw;
3905
e293a26f
CT		 3906 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr;
3907 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
3908 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
3c2d774c
GS		 3909
3910 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3911 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3912 nesibdev->ibdev.process_mad = nes_process_mad;
3913
3914 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3915 nesibdev->ibdev.post_send = nes_post_send;
3916 nesibdev->ibdev.post_recv = nes_post_recv;
3917
3918 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3919 if (nesibdev->ibdev.iwcm == NULL) {
3920 ib_dealloc_device(&nesibdev->ibdev);
3921 return NULL;
3922 }
3923 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3924 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3925 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3926 nesibdev->ibdev.iwcm->connect = nes_connect;
3927 nesibdev->ibdev.iwcm->accept = nes_accept;
3928 nesibdev->ibdev.iwcm->reject = nes_reject;
3929 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3930 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
3931
3932 return nesibdev;
3933}
3934
ea623455
MS		 3935
3936/**
3937 * nes_handle_delayed_event
3938 */
3939static void nes_handle_delayed_event(unsigned long data)
3940{
3941 struct nes_vnic *nesvnic = (void *) data;
3942
3943 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3944 struct ib_event event;
3945
3946 event.device = &nesvnic->nesibdev->ibdev;
3947 if (!event.device)
3948 goto stop_timer;
3949 event.event = nesvnic->delayed_event;
3950 event.element.port_num = nesvnic->logical_port + 1;
3951 ib_dispatch_event(&event);
3952 }
3953
3954stop_timer:
3955 nesvnic->event_timer.function = NULL;
3956}
3957
3958
cd6860eb
FL		 3959void nes_port_ibevent(struct nes_vnic *nesvnic)
3960{
3961 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3962 struct nes_device *nesdev = nesvnic->nesdev;
3963 struct ib_event event;
3964 event.device = &nesibdev->ibdev;
3965 event.element.port_num = nesvnic->logical_port + 1;
3966 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
ea623455
MS		 3967
3968 if (!nesvnic->event_timer.function) {
3969 ib_dispatch_event(&event);
3970 nesvnic->last_dispatched_event = event.event;
3971 nesvnic->event_timer.function = nes_handle_delayed_event;
3972 nesvnic->event_timer.data = (unsigned long) nesvnic;
3973 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3974 add_timer(&nesvnic->event_timer);
3975 } else {
3976 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3977 }
3978 nesvnic->delayed_event = event.event;
cd6860eb
FL		 3979}
3980
3c2d774c
GS		 3981
3982/**
3983 * nes_destroy_ofa_device
3984 */
3985void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3986{
3987 if (nesibdev == NULL)
3988 return;
3989
3990 nes_unregister_ofa_device(nesibdev);
3991
3992 kfree(nesibdev->ibdev.iwcm);
3993 ib_dealloc_device(&nesibdev->ibdev);
3994}
3995
3996
3997/**
3998 * nes_register_ofa_device
3999 */
4000int nes_register_ofa_device(struct nes_ib_device *nesibdev)
4001{
4002 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4003 struct nes_device *nesdev = nesvnic->nesdev;
4004 struct nes_adapter *nesadapter = nesdev->nesadapter;
4005 int i, ret;
4006
9a6edb60 4007 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3c2d774c
GS		 4008 if (ret) {
4009 return ret;
4010 }
4011
4012 /* Get the resources allocated to this device */
4013 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
4014 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
4015 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
4016 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
4017
f4e91eb4
TJ		 4018 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4019 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3c2d774c
GS		 4020 if (ret) {
4021 while (i > 0) {
4022 i--;
f4e91eb4
TJ		 4023 device_remove_file(&nesibdev->ibdev.dev,
4024 nes_dev_attributes[i]);
3c2d774c
GS		 4025 }
4026 ib_unregister_device(&nesibdev->ibdev);
4027 return ret;
4028 }
4029 }
4030
4031 nesvnic->of_device_registered = 1;
4032
4033 return 0;
4034}
4035
4036
4037/**
4038 * nes_unregister_ofa_device
4039 */
1a855fbf 4040static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3c2d774c
GS		 4041{
4042 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4043 int i;
4044
f4e91eb4
TJ		 4045 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4046 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3c2d774c
GS		 4047 }
4048
4049 if (nesvnic->of_device_registered) {
4050 ib_unregister_device(&nesibdev->ibdev);
4051 }
4052
4053 nesvnic->of_device_registered = 0;
4054}
Linux kernel - Deliverables
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