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IB/core: Pass hardware specific data in query_device
[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 */
2528e33e
MB		 515static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
516 struct ib_udata *uhw)
3c2d774c
GS		 517{
518 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
519 struct nes_device *nesdev = nesvnic->nesdev;
520 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
521
2528e33e
MB		 522 if (uhw->inlen || uhw->outlen)
523 return -EINVAL;
524
3c2d774c
GS		 525 memset(props, 0, sizeof(*props));
526 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
527
ff0380ce 528 props->fw_ver = nesdev->nesadapter->firmware_version;
3c2d774c
GS		 529 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
530 props->vendor_id = nesdev->nesadapter->vendor_id;
531 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
532 props->hw_ver = nesdev->nesadapter->hw_rev;
533 props->max_mr_size = 0x80000000;
534 props->max_qp = nesibdev->max_qp;
535 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
536 props->max_sge = nesdev->nesadapter->max_sge;
537 props->max_cq = nesibdev->max_cq;
5924aea6 538 props->max_cqe = nesdev->nesadapter->max_cqe;
3c2d774c
GS		 539 props->max_mr = nesibdev->max_mr;
540 props->max_mw = nesibdev->max_mr;
541 props->max_pd = nesibdev->max_pd;
542 props->max_sge_rd = 1;
543 switch (nesdev->nesadapter->max_irrq_wr) {
544 case 0:
8ac7f6e1 545 props->max_qp_rd_atom = 2;
3c2d774c
GS		 546 break;
547 case 1:
8ac7f6e1 548 props->max_qp_rd_atom = 8;
3c2d774c
GS		 549 break;
550 case 2:
8ac7f6e1 551 props->max_qp_rd_atom = 32;
3c2d774c
GS		 552 break;
553 case 3:
8ac7f6e1 554 props->max_qp_rd_atom = 64;
3c2d774c
GS		 555 break;
556 default:
557 props->max_qp_rd_atom = 0;
558 }
66388d67 559 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
3c2d774c
GS		 560 props->atomic_cap = IB_ATOMIC_NONE;
561 props->max_map_per_fmr = 1;
562
563 return 0;
564}
565
566
567/**
568 * nes_query_port
569 */
570static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
571{
cd1d3f7a
CT		 572 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
573 struct net_device *netdev = nesvnic->netdev;
574
3c2d774c
GS		 575 memset(props, 0, sizeof(*props));
576
cd1d3f7a
CT		 577 props->max_mtu = IB_MTU_4096;
578
579 if (netdev->mtu >= 4096)
580 props->active_mtu = IB_MTU_4096;
581 else if (netdev->mtu >= 2048)
582 props->active_mtu = IB_MTU_2048;
583 else if (netdev->mtu >= 1024)
584 props->active_mtu = IB_MTU_1024;
585 else if (netdev->mtu >= 512)
586 props->active_mtu = IB_MTU_512;
587 else
588 props->active_mtu = IB_MTU_256;
589
3c2d774c
GS		 590 props->lid = 1;
591 props->lmc = 0;
592 props->sm_lid = 0;
593 props->sm_sl = 0;
29327721
CT		 594 if (netif_queue_stopped(netdev))
595 props->state = IB_PORT_DOWN;
596 else if (nesvnic->linkup)
cd1d3f7a
CT		 597 props->state = IB_PORT_ACTIVE;
598 else
599 props->state = IB_PORT_DOWN;
3c2d774c
GS		 600 props->phys_state = 0;
601 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
602 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
603 props->gid_tbl_len = 1;
604 props->pkey_tbl_len = 1;
605 props->qkey_viol_cntr = 0;
606 props->active_width = IB_WIDTH_4X;
2e96691c 607 props->active_speed = IB_SPEED_SDR;
3c2d774c
GS		 608 props->max_msg_sz = 0x80000000;
609
610 return 0;
611}
612
3c2d774c
GS		 613/**
614 * nes_query_pkey
615 */
616static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
617{
618 *pkey = 0;
619 return 0;
620}
621
622
623/**
624 * nes_query_gid
625 */
626static int nes_query_gid(struct ib_device *ibdev, u8 port,
627 int index, union ib_gid *gid)
628{
629 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
630
631 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
632 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
633
634 return 0;
635}
636
637
638/**
639 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
640 * of all objects associated with a particular user-mode client.
641 */
642static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
643 struct ib_udata *udata)
644{
645 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
646 struct nes_device *nesdev = nesvnic->nesdev;
647 struct nes_adapter *nesadapter = nesdev->nesadapter;
648 struct nes_alloc_ucontext_req req;
649 struct nes_alloc_ucontext_resp uresp;
650 struct nes_ucontext *nes_ucontext;
651 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
652
653
654 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
655 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
656 return ERR_PTR(-EINVAL);
657 }
658
659 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
660 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
661 req.userspace_ver, NES_ABI_USERSPACE_VER);
662 return ERR_PTR(-EINVAL);
663 }
664
665
666 memset(&uresp, 0, sizeof uresp);
667
668 uresp.max_qps = nesibdev->max_qp;
669 uresp.max_pds = nesibdev->max_pd;
670 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
671 uresp.virtwq = nesadapter->virtwq;
672 uresp.kernel_ver = NES_ABI_KERNEL_VER;
673
674 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
675 if (!nes_ucontext)
676 return ERR_PTR(-ENOMEM);
677
678 nes_ucontext->nesdev = nesdev;
679 nes_ucontext->mmap_wq_offset = uresp.max_pds;
680 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
681 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
682 PAGE_SIZE;
683
684
685 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
686 kfree(nes_ucontext);
687 return ERR_PTR(-EFAULT);
688 }
689
690 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
691 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
692 atomic_set(&nes_ucontext->usecnt, 1);
693 return &nes_ucontext->ibucontext;
694}
695
696
697/**
698 * nes_dealloc_ucontext
699 */
700static int nes_dealloc_ucontext(struct ib_ucontext *context)
701{
702 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
703 /* struct nes_device *nesdev = nesvnic->nesdev; */
704 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
705
706 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
707 return 0;
708 kfree(nes_ucontext);
709 return 0;
710}
711
712
713/**
714 * nes_mmap
715 */
716static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
717{
718 unsigned long index;
719 struct nes_vnic *nesvnic = to_nesvnic(context->device);
720 struct nes_device *nesdev = nesvnic->nesdev;
721 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
722 struct nes_ucontext *nes_ucontext;
723 struct nes_qp *nesqp;
724
725 nes_ucontext = to_nesucontext(context);
726
727
728 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
729 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
730 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
731 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
732 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
733 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
734 return -EFAULT;
735 }
736 nesqp = nes_ucontext->mmap_nesqp[index];
737 if (nesqp == NULL) {
738 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
739 return -EFAULT;
740 }
741 if (remap_pfn_range(vma, vma->vm_start,
742 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
743 vma->vm_end - vma->vm_start,
744 vma->vm_page_prot)) {
745 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
746 return -EAGAIN;
747 }
748 vma->vm_private_data = nesqp;
749 return 0;
750 } else {
751 index = vma->vm_pgoff;
752 if (!test_bit(index, nes_ucontext->allocated_doorbells))
753 return -EFAULT;
754
755 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
756 if (io_remap_pfn_range(vma, vma->vm_start,
757 (nesdev->doorbell_start +
758 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
759 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
760 return -EAGAIN;
761 vma->vm_private_data = nes_ucontext;
762 return 0;
763 }
764
765 return -ENOSYS;
766}
767
768
769/**
770 * nes_alloc_pd
771 */
772static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
773 struct ib_ucontext *context, struct ib_udata *udata)
774{
775 struct nes_pd *nespd;
776 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
777 struct nes_device *nesdev = nesvnic->nesdev;
778 struct nes_adapter *nesadapter = nesdev->nesadapter;
779 struct nes_ucontext *nesucontext;
780 struct nes_alloc_pd_resp uresp;
781 u32 pd_num = 0;
782 int err;
783
784 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
785 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
29b4433d 786 netdev_refcnt_read(nesvnic->netdev));
3c2d774c
GS		 787
788 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
81821644 789 nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
3c2d774c
GS		 790 if (err) {
791 return ERR_PTR(err);
792 }
793
794 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
795 if (!nespd) {
796 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
797 return ERR_PTR(-ENOMEM);
798 }
799
800 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
801 nespd, nesvnic->nesibdev->ibdev.name);
802
803 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
804
805 if (context) {
806 nesucontext = to_nesucontext(context);
807 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
808 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
809 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
810 nespd->mmap_db_index, nespd->pd_id);
65b07ec2 811 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
3c2d774c
GS		 812 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
813 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
814 kfree(nespd);
815 return ERR_PTR(-ENOMEM);
816 }
817
818 uresp.pd_id = nespd->pd_id;
819 uresp.mmap_db_index = nespd->mmap_db_index;
820 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
821 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
822 kfree(nespd);
823 return ERR_PTR(-EFAULT);
824 }
825
826 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
827 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
828 nesucontext->first_free_db = nespd->mmap_db_index + 1;
829 }
830
831 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
832 return &nespd->ibpd;
833}
834
835
836/**
837 * nes_dealloc_pd
838 */
839static int nes_dealloc_pd(struct ib_pd *ibpd)
840{
841 struct nes_ucontext *nesucontext;
842 struct nes_pd *nespd = to_nespd(ibpd);
843 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
844 struct nes_device *nesdev = nesvnic->nesdev;
845 struct nes_adapter *nesadapter = nesdev->nesadapter;
846
847 if ((ibpd->uobject) && (ibpd->uobject->context)) {
848 nesucontext = to_nesucontext(ibpd->uobject->context);
849 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
850 nespd->mmap_db_index);
851 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
852 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
853 if (nesucontext->first_free_db > nespd->mmap_db_index) {
854 nesucontext->first_free_db = nespd->mmap_db_index;
855 }
856 }
857
858 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
859 nespd->pd_id, nespd);
860 nes_free_resource(nesadapter, nesadapter->allocated_pds,
861 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
862 kfree(nespd);
863
864 return 0;
865}
866
867
868/**
869 * nes_create_ah
870 */
871static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
872{
873 return ERR_PTR(-ENOSYS);
874}
875
876
877/**
878 * nes_destroy_ah
879 */
880static int nes_destroy_ah(struct ib_ah *ah)
881{
882 return -ENOSYS;
883}
884
885
886/**
887 * nes_get_encoded_size
888 */
889static inline u8 nes_get_encoded_size(int *size)
890{
891 u8 encoded_size = 0;
892 if (*size <= 32) {
893 *size = 32;
894 encoded_size = 1;
895 } else if (*size <= 128) {
896 *size = 128;
897 encoded_size = 2;
898 } else if (*size <= 512) {
899 *size = 512;
900 encoded_size = 3;
901 }
902 return (encoded_size);
903}
904
905
906
907/**
908 * nes_setup_virt_qp
909 */
910static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
911 struct nes_vnic *nesvnic, int sq_size, int rq_size)
912{
913 unsigned long flags;
914 void *mem;
915 __le64 *pbl = NULL;
916 __le64 *tpbl;
917 __le64 *pblbuffer;
918 struct nes_device *nesdev = nesvnic->nesdev;
919 struct nes_adapter *nesadapter = nesdev->nesadapter;
920 u32 pbl_entries;
921 u8 rq_pbl_entries;
922 u8 sq_pbl_entries;
923
924 pbl_entries = nespbl->pbl_size >> 3;
71e0957c 925 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
3c2d774c
GS		 926 nespbl->pbl_size, pbl_entries,
927 (void *)nespbl->pbl_vbase,
71e0957c 928 (unsigned long) nespbl->pbl_pbase);
3c2d774c
GS		 929 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
930 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
931 /* the first pbl to be fro the rq_vbase... */
932 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
933 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
934 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
935 if (!nespbl->page) {
936 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
937 kfree(nespbl);
938 return -ENOMEM;
939 }
940
941 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
942 nesqp->page = nespbl->page;
943 if (!nesqp->hwqp.sq_vbase) {
944 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
945 kfree(nespbl);
946 return -ENOMEM;
947 }
948
949 /* Now to get to sq.. we need to calculate how many */
950 /* PBL entries were used by the rq.. */
951 pbl += sq_pbl_entries;
952 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
953 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
954 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
955
71e0957c
RD		 956 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
957 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
958 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
3c2d774c
GS		 959 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
960 if (!nesadapter->free_256pbl) {
961 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
962 nespbl->pbl_pbase);
963 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
964 kunmap(nesqp->page);
965 kfree(nespbl);
966 return -ENOMEM;
967 }
968 nesadapter->free_256pbl--;
969 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
970
971 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
972 pblbuffer = nesqp->pbl_vbase;
973 if (!nesqp->pbl_vbase) {
974 /* memory allocated during nes_reg_user_mr() */
975 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
976 nespbl->pbl_pbase);
977 kfree(nespbl);
978 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
979 nesadapter->free_256pbl++;
980 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
981 kunmap(nesqp->page);
982 return -ENOMEM;
983 }
984 memset(nesqp->pbl_vbase, 0, 256);
985 /* fill in the page address in the pbl buffer.. */
986 tpbl = pblbuffer + 16;
987 pbl = (__le64 *)nespbl->pbl_vbase;
988 while (sq_pbl_entries--)
989 *tpbl++ = *pbl++;
990 tpbl = pblbuffer;
991 while (rq_pbl_entries--)
992 *tpbl++ = *pbl++;
993
994 /* done with memory allocated during nes_reg_user_mr() */
995 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
996 nespbl->pbl_pbase);
997 kfree(nespbl);
998
999 nesqp->qp_mem_size =
1000 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
1001 /* Round up to a multiple of a page */
1002 nesqp->qp_mem_size += PAGE_SIZE - 1;
1003 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1004
1005 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1006 &nesqp->hwqp.q2_pbase);
1007
1008 if (!mem) {
1009 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
1010 nesqp->pbl_vbase = NULL;
1011 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1012 nesadapter->free_256pbl++;
1013 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1014 kunmap(nesqp->page);
1015 return -ENOMEM;
1016 }
d2fa9b26 1017 nesqp->sq_kmapped = 1;
3c2d774c
GS		 1018 nesqp->hwqp.q2_vbase = mem;
1019 mem += 256;
1020 memset(nesqp->hwqp.q2_vbase, 0, 256);
1021 nesqp->nesqp_context = mem;
1022 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1023 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1024
1025 return 0;
1026}
1027
1028
1029/**
1030 * nes_setup_mmap_qp
1031 */
1032static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
1033 int sq_size, int rq_size)
1034{
1035 void *mem;
1036 struct nes_device *nesdev = nesvnic->nesdev;
1037
1038 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
1039 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
1040 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
1041 256; /* this is Q2 */
1042 /* Round up to a multiple of a page */
1043 nesqp->qp_mem_size += PAGE_SIZE - 1;
1044 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
1045
1046 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1047 &nesqp->hwqp.sq_pbase);
1048 if (!mem)
1049 return -ENOMEM;
1050 nes_debug(NES_DBG_QP, "PCI consistent memory for "
1051 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
1052 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
1053
1054 memset(mem, 0, nesqp->qp_mem_size);
1055
1056 nesqp->hwqp.sq_vbase = mem;
1057 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
1058
1059 nesqp->hwqp.rq_vbase = mem;
1060 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
1061 sizeof(struct nes_hw_qp_wqe) * sq_size;
1062 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
1063
1064 nesqp->hwqp.q2_vbase = mem;
1065 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
1066 sizeof(struct nes_hw_qp_wqe) * rq_size;
1067 mem += 256;
1068 memset(nesqp->hwqp.q2_vbase, 0, 256);
1069
1070 nesqp->nesqp_context = mem;
1071 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
1072 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
1073 return 0;
1074}
1075
1076
1077/**
1078 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
1079 */
1080static inline void nes_free_qp_mem(struct nes_device *nesdev,
1081 struct nes_qp *nesqp, int virt_wqs)
1082{
1083 unsigned long flags;
1084 struct nes_adapter *nesadapter = nesdev->nesadapter;
1085 if (!virt_wqs) {
1086 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
1087 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
1088 }else {
1089 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1090 nesadapter->free_256pbl++;
1091 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1092 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
1093 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
1094 nesqp->pbl_vbase = NULL;
d2fa9b26
FL		 1095 if (nesqp->sq_kmapped) {
1096 nesqp->sq_kmapped = 0;
1097 kunmap(nesqp->page);
1098 }
3c2d774c
GS		 1099 }
1100}
1101
1102
1103/**
1104 * nes_create_qp
1105 */
1106static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1107 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1108{
1109 u64 u64temp= 0;
1110 u64 u64nesqp = 0;
1111 struct nes_pd *nespd = to_nespd(ibpd);
1112 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1113 struct nes_device *nesdev = nesvnic->nesdev;
1114 struct nes_adapter *nesadapter = nesdev->nesadapter;
1115 struct nes_qp *nesqp;
1116 struct nes_cq *nescq;
1117 struct nes_ucontext *nes_ucontext;
1118 struct nes_hw_cqp_wqe *cqp_wqe;
1119 struct nes_cqp_request *cqp_request;
1120 struct nes_create_qp_req req;
1121 struct nes_create_qp_resp uresp;
1122 struct nes_pbl *nespbl = NULL;
1123 u32 qp_num = 0;
1124 u32 opcode = 0;
1125 /* u32 counter = 0; */
1126 void *mem;
1127 unsigned long flags;
1128 int ret;
1129 int err;
1130 int virt_wqs = 0;
1131 int sq_size;
1132 int rq_size;
1133 u8 sq_encoded_size;
1134 u8 rq_encoded_size;
1135 /* int counter; */
1136
b846f25a
EC		 1137 if (init_attr->create_flags)
1138 return ERR_PTR(-EINVAL);
1139
3c2d774c
GS		 1140 atomic_inc(&qps_created);
1141 switch (init_attr->qp_type) {
1142 case IB_QPT_RC:
1143 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1144 init_attr->cap.max_inline_data = 0;
1145 } else {
1146 init_attr->cap.max_inline_data = 64;
1147 }
1148 sq_size = init_attr->cap.max_send_wr;
1149 rq_size = init_attr->cap.max_recv_wr;
1150
7495ab68 1151 /* check if the encoded sizes are OK or not... */
3c2d774c
GS		 1152 sq_encoded_size = nes_get_encoded_size(&sq_size);
1153 rq_encoded_size = nes_get_encoded_size(&rq_size);
1154
1155 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1156 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1157 rq_size, sq_size);
1158 return ERR_PTR(-EINVAL);
1159 }
1160
1161 init_attr->cap.max_send_wr = sq_size -2;
1162 init_attr->cap.max_recv_wr = rq_size -1;
1163 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1164
1165 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
81821644 1166 nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
3c2d774c
GS		 1167 if (ret) {
1168 return ERR_PTR(ret);
1169 }
1170
1171 /* Need 512 (actually now 1024) byte alignment on this structure */
1172 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1173 if (!mem) {
1174 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1175 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1176 return ERR_PTR(-ENOMEM);
1177 }
1178 u64nesqp = (unsigned long)mem;
1179 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1180 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1181 u64nesqp &= ~u64temp;
1182 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1183 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1184 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1185 nesqp->allocated_buffer = mem;
1186
1187 if (udata) {
1188 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1189 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1190 kfree(nesqp->allocated_buffer);
1191 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
9d194d10 1192 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1193 }
1194 if (req.user_wqe_buffers) {
1195 virt_wqs = 1;
1196 }
43adff39
TN		 1197 if (req.user_qp_buffer)
1198 nesqp->nesuqp_addr = req.user_qp_buffer;
3c2d774c
GS		 1199 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1200 nesqp->user_mode = 1;
1201 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1202 if (virt_wqs) {
1203 err = 1;
1204 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1205 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1206 list_del(&nespbl->list);
1207 err = 0;
1208 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1209 nespbl, nespbl->user_base);
1210 break;
1211 }
1212 }
1213 if (err) {
1214 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1215 (long long unsigned int)req.user_wqe_buffers);
1216 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1217 kfree(nesqp->allocated_buffer);
9300c0c0 1218 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1219 }
1220 }
1221
1222 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1223 nesqp->mmap_sq_db_index =
1224 find_next_zero_bit(nes_ucontext->allocated_wqs,
1225 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1226 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1227 nespd->mmap_db_index); */
51af33e8 1228 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
3c2d774c
GS		 1229 nes_debug(NES_DBG_QP,
1230 "db index > max user regions, failing create QP\n");
1231 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1232 if (virt_wqs) {
1233 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1234 nespbl->pbl_pbase);
1235 kfree(nespbl);
1236 }
1237 kfree(nesqp->allocated_buffer);
1238 return ERR_PTR(-ENOMEM);
1239 }
1240 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1241 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1242 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1243 } else {
1244 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1245 kfree(nesqp->allocated_buffer);
1246 return ERR_PTR(-EFAULT);
1247 }
1248 }
1249 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1250 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1251 if (err) {
1252 nes_debug(NES_DBG_QP,
1253 "error geting qp mem code = %d\n", err);
1254 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1255 kfree(nesqp->allocated_buffer);
1256 return ERR_PTR(-ENOMEM);
1257 }
1258
1259 nesqp->hwqp.sq_size = sq_size;
1260 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1261 nesqp->hwqp.sq_head = 1;
1262 nesqp->hwqp.rq_size = rq_size;
1263 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1264 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1265 (void *)nesqp->nesqp_context_pbase);
1266 */
1267 nesqp->hwqp.qp_id = qp_num;
1268 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1269 nesqp->nespd = nespd;
1270
1271 nescq = to_nescq(init_attr->send_cq);
1272 nesqp->nesscq = nescq;
1273 nescq = to_nescq(init_attr->recv_cq);
1274 nesqp->nesrcq = nescq;
1275
1276 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1277 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1278 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1279 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1280 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1281 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
c12e56ef 1282 if (!udata) {
3c2d774c
GS		 1283 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1284 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
c12e56ef 1285 }
3c2d774c
GS		 1286 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1287 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1288 u64temp = (u64)nesqp->hwqp.sq_pbase;
1289 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1290 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1291
1292
1293 if (!virt_wqs) {
1294 u64temp = (u64)nesqp->hwqp.sq_pbase;
1295 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1296 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1297 u64temp = (u64)nesqp->hwqp.rq_pbase;
1298 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1299 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1300 } else {
1301 u64temp = (u64)nesqp->pbl_pbase;
1302 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1303 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1304 }
1305
1306 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1307 nesvnic->next_qp_nic_index,
1308 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1309 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1310 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1311 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1312 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1313 nesvnic->next_qp_nic_index++;
1314 if ((nesvnic->next_qp_nic_index > 3) ||
1315 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1316 nesvnic->next_qp_nic_index = 0;
1317 }
1318 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1319
1320 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1321 u64temp = (u64)nesqp->hwqp.q2_pbase;
1322 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1323 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1324 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1325 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1326 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
883c6992 1327 NES_QPCONTEXT_ORDIRD_AAH |
3c2d774c
GS		 1328 ((((u32)nesadapter->max_irrq_wr) <<
1329 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1330 if (disable_mpa_crc) {
1331 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1332 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1333 }
1334
1335
1336 /* Create the QP */
1337 cqp_request = nes_get_cqp_request(nesdev);
1338 if (cqp_request == NULL) {
1339 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1340 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1341 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1342 kfree(nesqp->allocated_buffer);
1343 return ERR_PTR(-ENOMEM);
1344 }
1345 cqp_request->waiting = 1;
1346 cqp_wqe = &cqp_request->cqp_wqe;
1347
1348 if (!virt_wqs) {
1349 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1350 NES_CQP_QP_IWARP_STATE_IDLE;
1351 } else {
1352 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1353 NES_CQP_QP_IWARP_STATE_IDLE;
1354 }
1355 opcode |= NES_CQP_QP_CQS_VALID;
1356 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1357 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1358 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1359
1360 u64temp = (u64)nesqp->nesqp_context_pbase;
1361 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1362
1363 atomic_set(&cqp_request->refcount, 2);
8294f297 1364 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1365
1366 /* Wait for CQP */
1367 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1368 nesqp->hwqp.qp_id);
1369 ret = wait_event_timeout(cqp_request->waitq,
1370 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1371 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1372 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1373 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1374 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1375 cqp_request->major_code, cqp_request->minor_code);
1376 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 1377 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1378 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1379 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1380 kfree(nesqp->allocated_buffer);
1381 if (!ret) {
1382 return ERR_PTR(-ETIME);
1383 } else {
1384 return ERR_PTR(-EIO);
1385 }
3c2d774c
GS		 1386 }
1387
1ff66e8c
RD		 1388 nes_put_cqp_request(nesdev, cqp_request);
1389
3c2d774c
GS		 1390 if (ibpd->uobject) {
1391 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
60429630 1392 uresp.mmap_rq_db_index = 0;
3c2d774c
GS		 1393 uresp.actual_sq_size = sq_size;
1394 uresp.actual_rq_size = rq_size;
1395 uresp.qp_id = nesqp->hwqp.qp_id;
1396 uresp.nes_drv_opt = nes_drv_opt;
1397 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1398 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1399 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1400 kfree(nesqp->allocated_buffer);
1401 return ERR_PTR(-EFAULT);
1402 }
1403 }
1404
1405 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1406 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1407 spin_lock_init(&nesqp->lock);
3c2d774c
GS		 1408 nes_add_ref(&nesqp->ibqp);
1409 break;
1410 default:
1411 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1412 return ERR_PTR(-EINVAL);
3c2d774c
GS		 1413 }
1414
d14152da 1415 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
7bfcfa51
TN		 1416 init_timer(&nesqp->terminate_timer);
1417 nesqp->terminate_timer.function = nes_terminate_timeout;
1418 nesqp->terminate_timer.data = (unsigned long)nesqp;
d14152da 1419
3c2d774c
GS		 1420 /* update the QP table */
1421 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1422 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
29b4433d 1423 netdev_refcnt_read(nesvnic->netdev));
3c2d774c
GS		 1424
1425 return &nesqp->ibqp;
1426}
1427
5ee21fe0
DW		 1428/**
1429 * nes_clean_cq
1430 */
1431static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1432{
1433 u32 cq_head;
1434 u32 lo;
1435 u32 hi;
1436 u64 u64temp;
1437 unsigned long flags = 0;
1438
1439 spin_lock_irqsave(&nescq->lock, flags);
1440
1441 cq_head = nescq->hw_cq.cq_head;
1442 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1443 rmb();
1444 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1445 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1446 u64temp = (((u64)hi) << 32) | ((u64)lo);
1447 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1448 if (u64temp == (u64)(unsigned long)nesqp) {
1449 /* Zero the context value so cqe will be ignored */
1450 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1451 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1452 }
1453
1454 if (++cq_head >= nescq->hw_cq.cq_size)
1455 cq_head = 0;
1456 }
1457
1458 spin_unlock_irqrestore(&nescq->lock, flags);
1459}
1460
1461
3c2d774c
GS		 1462/**
1463 * nes_destroy_qp
1464 */
1465static int nes_destroy_qp(struct ib_qp *ibqp)
1466{
1467 struct nes_qp *nesqp = to_nesqp(ibqp);
3c2d774c
GS		 1468 struct nes_ucontext *nes_ucontext;
1469 struct ib_qp_attr attr;
1470 struct iw_cm_id *cm_id;
1471 struct iw_cm_event cm_event;
0f0bee8b 1472 int ret = 0;
3c2d774c
GS		 1473
1474 atomic_inc(&sw_qps_destroyed);
1475 nesqp->destroyed = 1;
1476
1477 /* Blow away the connection if it exists. */
1478 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1479 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1480 attr.qp_state = IB_QPS_ERR;
1481 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1482 }
1483
1484 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1485 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1486 cm_id = nesqp->cm_id;
1487 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
d0c49bf3 1488 cm_event.status = -ETIMEDOUT;
3c2d774c
GS		 1489 cm_event.local_addr = cm_id->local_addr;
1490 cm_event.remote_addr = cm_id->remote_addr;
1491 cm_event.private_data = NULL;
1492 cm_event.private_data_len = 0;
1493
1494 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1495 "QP%u. cm_id = %p, refcount = %u. \n",
1496 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1497
1498 cm_id->rem_ref(cm_id);
1499 ret = cm_id->event_handler(cm_id, &cm_event);
1500 if (ret)
1501 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1502 }
1503
3c2d774c
GS		 1504 if (nesqp->user_mode) {
1505 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1506 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1507 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1508 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1509 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1510 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1511 }
1512 }
d2fa9b26
FL		 1513 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1514 nesqp->sq_kmapped = 0;
3c2d774c 1515 kunmap(nesqp->page);
d2fa9b26 1516 }
5ee21fe0
DW		 1517 } else {
1518 /* Clean any pending completions from the cq(s) */
1519 if (nesqp->nesscq)
1520 nes_clean_cq(nesqp, nesqp->nesscq);
1521
1522 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1523 nes_clean_cq(nesqp, nesqp->nesrcq);
3c2d774c 1524 }
3c2d774c
GS		 1525 nes_rem_ref(&nesqp->ibqp);
1526 return 0;
1527}
1528
1529
1530/**
1531 * nes_create_cq
1532 */
bcf4c1ea
MB		 1533static struct ib_cq *nes_create_cq(struct ib_device *ibdev,
1534 const struct ib_cq_init_attr *attr,
1535 struct ib_ucontext *context,
1536 struct ib_udata *udata)
3c2d774c 1537{
bcf4c1ea 1538 int entries = attr->cqe;
3c2d774c
GS		 1539 u64 u64temp;
1540 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1541 struct nes_device *nesdev = nesvnic->nesdev;
1542 struct nes_adapter *nesadapter = nesdev->nesadapter;
1543 struct nes_cq *nescq;
1544 struct nes_ucontext *nes_ucontext = NULL;
1545 struct nes_cqp_request *cqp_request;
1546 void *mem = NULL;
1547 struct nes_hw_cqp_wqe *cqp_wqe;
1548 struct nes_pbl *nespbl = NULL;
1549 struct nes_create_cq_req req;
1550 struct nes_create_cq_resp resp;
1551 u32 cq_num = 0;
1552 u32 opcode = 0;
1553 u32 pbl_entries = 1;
1554 int err;
1555 unsigned long flags;
1556 int ret;
1557
bcf4c1ea
MB		 1558 if (attr->flags)
1559 return ERR_PTR(-EINVAL);
1560
5924aea6
CT		 1561 if (entries > nesadapter->max_cqe)
1562 return ERR_PTR(-EINVAL);
1563
3c2d774c 1564 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
81821644 1565 nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
3c2d774c
GS		 1566 if (err) {
1567 return ERR_PTR(err);
1568 }
1569
1570 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1571 if (!nescq) {
1572 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1573 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1574 return ERR_PTR(-ENOMEM);
1575 }
1576
1577 nescq->hw_cq.cq_size = max(entries + 1, 5);
1578 nescq->hw_cq.cq_number = cq_num;
1579 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1580
1581
1582 if (context) {
1583 nes_ucontext = to_nesucontext(context);
1584 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1585 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1586 kfree(nescq);
1587 return ERR_PTR(-EFAULT);
1588 }
1589 nesvnic->mcrq_ucontext = nes_ucontext;
1590 nes_ucontext->mcrqf = req.mcrqf;
1591 if (nes_ucontext->mcrqf) {
1592 if (nes_ucontext->mcrqf & 0x80000000)
2e369544 1593 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
3c2d774c
GS		 1594 else if (nes_ucontext->mcrqf & 0x40000000)
1595 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1596 else
1597 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
5d1af5c8 1598 nescq->mcrqf = nes_ucontext->mcrqf;
3c2d774c
GS		 1599 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1600 }
1601 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1602 (unsigned long)req.user_cq_buffer, entries);
9300c0c0 1603 err = 1;
3c2d774c
GS		 1604 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1605 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1606 list_del(&nespbl->list);
1607 err = 0;
1608 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1609 nespbl);
1610 break;
1611 }
1612 }
1613 if (err) {
1614 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1615 kfree(nescq);
9300c0c0 1616 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1617 }
1618
1619 pbl_entries = nespbl->pbl_size >> 3;
1620 nescq->cq_mem_size = 0;
1621 } else {
1622 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1623 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1624 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1625
1626 /* allocate the physical buffer space */
9011a67b
JP		 1627 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1628 &nescq->hw_cq.cq_pbase);
3c2d774c
GS		 1629 if (!mem) {
1630 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1631 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1632 kfree(nescq);
1633 return ERR_PTR(-ENOMEM);
1634 }
1635
3c2d774c
GS		 1636 nescq->hw_cq.cq_vbase = mem;
1637 nescq->hw_cq.cq_head = 0;
1638 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1639 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1640 (u32)nescq->hw_cq.cq_pbase);
1641 }
1642
1643 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1644 spin_lock_init(&nescq->lock);
1645
1646 /* send CreateCQ request to CQP */
1647 cqp_request = nes_get_cqp_request(nesdev);
1648 if (cqp_request == NULL) {
1649 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1650 if (!context)
1651 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1652 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1653 else {
1654 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1655 nespbl->pbl_vbase, nespbl->pbl_pbase);
1656 kfree(nespbl);
1657 }
1658
3c2d774c
GS		 1659 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1660 kfree(nescq);
1661 return ERR_PTR(-ENOMEM);
1662 }
1663 cqp_request->waiting = 1;
1664 cqp_wqe = &cqp_request->cqp_wqe;
1665
1666 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1667 NES_CQP_CQ_CHK_OVERFLOW |
1668 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1669
1670 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1671
1672 if (pbl_entries != 1) {
1673 if (pbl_entries > 32) {
1674 /* use 4k pbl */
1675 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1676 if (nesadapter->free_4kpbl == 0) {
c5d321e5
FL		 1677 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1678 nes_free_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1679 if (!context)
1680 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1681 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1682 else {
1683 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1684 nespbl->pbl_vbase, nespbl->pbl_pbase);
1685 kfree(nespbl);
1686 }
3c2d774c
GS		 1687 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1688 kfree(nescq);
1689 return ERR_PTR(-ENOMEM);
1690 } else {
1691 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1692 nescq->virtual_cq = 2;
1693 nesadapter->free_4kpbl--;
1694 }
1695 } else {
1696 /* use 256 byte pbl */
1697 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1698 if (nesadapter->free_256pbl == 0) {
c5d321e5
FL		 1699 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1700 nes_free_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1701 if (!context)
1702 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1703 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1704 else {
1705 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1706 nespbl->pbl_vbase, nespbl->pbl_pbase);
1707 kfree(nespbl);
1708 }
3c2d774c
GS		 1709 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1710 kfree(nescq);
1711 return ERR_PTR(-ENOMEM);
1712 } else {
1713 opcode |= NES_CQP_CQ_VIRT;
1714 nescq->virtual_cq = 1;
1715 nesadapter->free_256pbl--;
1716 }
1717 }
1718 }
1719
1720 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1721
1722 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1723 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1724 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1725 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1726
1727 if (context) {
1728 if (pbl_entries != 1)
1729 u64temp = (u64)nespbl->pbl_pbase;
1730 else
1731 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1732 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1733 nes_ucontext->mmap_db_index[0]);
1734 } else {
1735 u64temp = (u64)nescq->hw_cq.cq_pbase;
1736 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1737 }
1738 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1739 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1740 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1741 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1742 cpu_to_le32((u32)(u64temp >> 1));
1743 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1744 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1745
1746 atomic_set(&cqp_request->refcount, 2);
8294f297 1747 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1748
1749 /* Wait for CQP */
1750 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1751 nescq->hw_cq.cq_number);
1752 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1753 NES_EVENT_TIMEOUT * 2);
1754 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1755 nescq->hw_cq.cq_number, ret);
1756 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 1757 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1758 if (!context)
1759 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1760 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1761 else {
1762 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1763 nespbl->pbl_vbase, nespbl->pbl_pbase);
1764 kfree(nespbl);
1765 }
3c2d774c
GS		 1766 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1767 kfree(nescq);
1768 return ERR_PTR(-EIO);
3c2d774c 1769 }
1ff66e8c 1770 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1771
1772 if (context) {
1773 /* free the nespbl */
1774 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1775 nespbl->pbl_pbase);
1776 kfree(nespbl);
1777 resp.cq_id = nescq->hw_cq.cq_number;
1778 resp.cq_size = nescq->hw_cq.cq_size;
1779 resp.mmap_db_index = 0;
60429630 1780 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
3c2d774c
GS		 1781 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1782 kfree(nescq);
1783 return ERR_PTR(-EFAULT);
1784 }
1785 }
1786
1787 return &nescq->ibcq;
1788}
1789
1790
1791/**
1792 * nes_destroy_cq
1793 */
1794static int nes_destroy_cq(struct ib_cq *ib_cq)
1795{
1796 struct nes_cq *nescq;
1797 struct nes_device *nesdev;
1798 struct nes_vnic *nesvnic;
1799 struct nes_adapter *nesadapter;
1800 struct nes_hw_cqp_wqe *cqp_wqe;
1801 struct nes_cqp_request *cqp_request;
1802 unsigned long flags;
1803 u32 opcode = 0;
1804 int ret;
1805
1806 if (ib_cq == NULL)
1807 return 0;
1808
1809 nescq = to_nescq(ib_cq);
1810 nesvnic = to_nesvnic(ib_cq->device);
1811 nesdev = nesvnic->nesdev;
1812 nesadapter = nesdev->nesadapter;
1813
1814 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1815
1816 /* Send DestroyCQ request to CQP */
1817 cqp_request = nes_get_cqp_request(nesdev);
1818 if (cqp_request == NULL) {
1819 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1820 return -ENOMEM;
1821 }
1822 cqp_request->waiting = 1;
1823 cqp_wqe = &cqp_request->cqp_wqe;
1824 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1825 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1826 if (nescq->virtual_cq == 1) {
1827 nesadapter->free_256pbl++;
1828 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1829 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
33718363 1830 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
3c2d774c
GS		 1831 }
1832 } else if (nescq->virtual_cq == 2) {
1833 nesadapter->free_4kpbl++;
1834 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1835 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
33718363 1836 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
3c2d774c
GS		 1837 }
1838 opcode |= NES_CQP_CQ_4KB_CHUNK;
1839 }
1840
1841 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1842
1843 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1844 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1845 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1846 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
5d1af5c8
MW		 1847 if (!nescq->mcrqf)
1848 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1849
3c2d774c 1850 atomic_set(&cqp_request->refcount, 2);
8294f297 1851 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1852
1853 /* Wait for CQP */
1854 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1855 nescq->hw_cq.cq_number);
1856 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1857 NES_EVENT_TIMEOUT);
1858 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1859 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1860 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1861 cqp_request->minor_code);
1ff66e8c
RD		 1862 if (!ret) {
1863 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
3c2d774c 1864 nescq->hw_cq.cq_number);
1ff66e8c
RD		 1865 ret = -ETIME;
1866 } else if (cqp_request->major_code) {
1867 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
3c2d774c 1868 nescq->hw_cq.cq_number);
1ff66e8c 1869 ret = -EIO;
3c2d774c
GS		 1870 } else {
1871 ret = 0;
3c2d774c 1872 }
1ff66e8c 1873 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1874
1875 if (nescq->cq_mem_size)
1876 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
31d1e340 1877 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
3c2d774c
GS		 1878 kfree(nescq);
1879
1880 return ret;
1881}
1882
0145f341
DW		 1883/**
1884 * root_256
1885 */
1886static u32 root_256(struct nes_device *nesdev,
1887 struct nes_root_vpbl *root_vpbl,
1888 struct nes_root_vpbl *new_root,
cc005fa2 1889 u16 pbl_count_4k)
0145f341
DW		 1890{
1891 u64 leaf_pbl;
1892 int i, j, k;
1893
1894 if (pbl_count_4k == 1) {
1895 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1896 512, &new_root->pbl_pbase);
1897
1898 if (new_root->pbl_vbase == NULL)
1899 return 0;
1900
1901 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1902 for (i = 0; i < 16; i++) {
1903 new_root->pbl_vbase[i].pa_low =
1904 cpu_to_le32((u32)leaf_pbl);
1905 new_root->pbl_vbase[i].pa_high =
1906 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1907 leaf_pbl += 256;
1908 }
1909 } else {
1910 for (i = 3; i >= 0; i--) {
1911 j = i * 16;
1912 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1913 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1914 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1915 << 32);
1916 for (k = 1; k < 16; k++) {
1917 leaf_pbl += 256;
1918 root_vpbl->pbl_vbase[j + k].pa_low =
1919 cpu_to_le32((u32)leaf_pbl);
1920 root_vpbl->pbl_vbase[j + k].pa_high =
1921 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1922 }
1923 }
1924 }
1925
1926 return 1;
1927}
1928
3c2d774c
GS		 1929
1930/**
1931 * nes_reg_mr
1932 */
1933static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1934 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
0145f341
DW		 1935 dma_addr_t single_buffer, u16 pbl_count_4k,
1936 u16 residual_page_count_4k, int acc, u64 *iova_start,
1937 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
3c2d774c
GS		 1938{
1939 struct nes_hw_cqp_wqe *cqp_wqe;
1940 struct nes_cqp_request *cqp_request;
1941 unsigned long flags;
1942 int ret;
1943 struct nes_adapter *nesadapter = nesdev->nesadapter;
0145f341 1944 uint pg_cnt = 0;
1af9222b 1945 u16 pbl_count_256 = 0;
0145f341
DW		 1946 u16 pbl_count = 0;
1947 u8 use_256_pbls = 0;
1948 u8 use_4k_pbls = 0;
1949 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
812d8672 1950 struct nes_root_vpbl new_root = { 0, NULL, NULL };
3c2d774c
GS		 1951 u32 opcode = 0;
1952 u16 major_code;
1953
1954 /* Register the region with the adapter */
1955 cqp_request = nes_get_cqp_request(nesdev);
1956 if (cqp_request == NULL) {
1957 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1958 return -ENOMEM;
1959 }
1960 cqp_request->waiting = 1;
1961 cqp_wqe = &cqp_request->cqp_wqe;
1962
0145f341
DW		 1963 if (pbl_count_4k) {
1964 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1965
1966 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1967 pbl_count_256 = (pg_cnt + 31) / 32;
1968 if (pg_cnt <= 32) {
1969 if (pbl_count_256 <= nesadapter->free_256pbl)
1970 use_256_pbls = 1;
1971 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1972 use_4k_pbls = 1;
1973 } else if (pg_cnt <= 2048) {
1974 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1975 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1976 use_4k_pbls = 1;
1977 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1978 use_256_pbls = 1;
1979 use_two_level = 1;
1980 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1981 use_4k_pbls = 1;
3c2d774c
GS		 1982 }
1983 } else {
0145f341
DW		 1984 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1985 use_4k_pbls = 1;
3c2d774c 1986 }
0145f341
DW		 1987
1988 if (use_256_pbls) {
1989 pbl_count = pbl_count_256;
1990 nesadapter->free_256pbl -= pbl_count + use_two_level;
1991 } else if (use_4k_pbls) {
1992 pbl_count = pbl_count_4k;
1993 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1994 } else {
1995 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1996 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1997 nes_free_cqp_request(nesdev, cqp_request);
1998 return -ENOMEM;
1999 }
2000
2001 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
3c2d774c
GS		 2002 }
2003
0145f341 2004 if (use_256_pbls && use_two_level) {
cc005fa2 2005 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
0145f341
DW		 2006 if (new_root.pbl_pbase != 0)
2007 root_vpbl = &new_root;
2008 } else {
2009 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2010 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
2011 use_256_pbls = 0;
2012
2013 if (pbl_count_4k == 1)
2014 use_two_level = 0;
2015 pbl_count = pbl_count_4k;
2016
2017 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
2018 nesadapter->free_4kpbl -= pbl_count + use_two_level;
2019 use_4k_pbls = 1;
2020 }
2021 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2022
2023 if (use_4k_pbls == 0)
2024 return -ENOMEM;
2025 }
2026 }
3c2d774c
GS		 2027
2028 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
2029 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
2030 if (acc & IB_ACCESS_LOCAL_WRITE)
2031 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
2032 if (acc & IB_ACCESS_REMOTE_WRITE)
2033 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
2034 if (acc & IB_ACCESS_REMOTE_READ)
2035 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
2036 if (acc & IB_ACCESS_MW_BIND)
2037 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
2038
2039 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2040 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
2041 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
2042 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
2043
2044 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
2045 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
2046 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
2047 cpu_to_le32(nespd->pd_id & 0x00007fff);
2048 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
2049
2050 if (pbl_count == 0) {
2051 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
2052 } else {
2053 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
2054 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
0145f341 2055 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
3c2d774c 2056
0145f341 2057 if (use_4k_pbls)
3c2d774c
GS		 2058 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
2059 }
2060 barrier();
2061
2062 atomic_set(&cqp_request->refcount, 2);
8294f297 2063 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 2064
2065 /* Wait for CQP */
2066 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
2067 NES_EVENT_TIMEOUT);
2068 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
2069 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2070 stag, ret, cqp_request->major_code, cqp_request->minor_code);
2071 major_code = cqp_request->major_code;
1ff66e8c
RD		 2072 nes_put_cqp_request(nesdev, cqp_request);
2073
dae5d13a
DW		 2074 if ((!ret || major_code) && pbl_count != 0) {
2075 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
0145f341
DW		 2076 if (use_256_pbls)
2077 nesadapter->free_256pbl += pbl_count + use_two_level;
2078 else if (use_4k_pbls)
2079 nesadapter->free_4kpbl += pbl_count + use_two_level;
dae5d13a
DW		 2080 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2081 }
0145f341
DW		 2082 if (new_root.pbl_pbase)
2083 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
2084 new_root.pbl_pbase);
2085
3c2d774c
GS		 2086 if (!ret)
2087 return -ETIME;
2088 else if (major_code)
2089 return -EIO;
3c2d774c 2090
0145f341
DW		 2091 *actual_pbl_cnt = pbl_count + use_two_level;
2092 *used_4k_pbls = use_4k_pbls;
3c2d774c
GS		 2093 return 0;
2094}
2095
2096
2097/**
2098 * nes_reg_phys_mr
2099 */
2100static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
2101 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2102 u64 * iova_start)
2103{
2104 u64 region_length;
2105 struct nes_pd *nespd = to_nespd(ib_pd);
2106 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2107 struct nes_device *nesdev = nesvnic->nesdev;
2108 struct nes_adapter *nesadapter = nesdev->nesadapter;
2109 struct nes_mr *nesmr;
2110 struct ib_mr *ibmr;
2111 struct nes_vpbl vpbl;
2112 struct nes_root_vpbl root_vpbl;
2113 u32 stag;
2114 u32 i;
3f32eb11 2115 unsigned long mask;
3c2d774c
GS		 2116 u32 stag_index = 0;
2117 u32 next_stag_index = 0;
2118 u32 driver_key = 0;
2119 u32 root_pbl_index = 0;
2120 u32 cur_pbl_index = 0;
69d51023 2121 int err = 0;
3c2d774c
GS		 2122 int ret = 0;
2123 u16 pbl_count = 0;
2124 u8 single_page = 1;
2125 u8 stag_key = 0;
2126
3c2d774c
GS		 2127 region_length = 0;
2128 vpbl.pbl_vbase = NULL;
2129 root_vpbl.pbl_vbase = NULL;
2130 root_vpbl.pbl_pbase = 0;
2131
2132 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2133 stag_key = (u8)next_stag_index;
2134
2135 driver_key = 0;
2136
2137 next_stag_index >>= 8;
2138 next_stag_index %= nesadapter->max_mr;
2139 if (num_phys_buf > (1024*512)) {
2140 return ERR_PTR(-E2BIG);
2141 }
2142
3f32eb11
DW		 2143 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2144 return ERR_PTR(-EINVAL);
2145
3c2d774c 2146 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
81821644 2147 &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
3c2d774c
GS		 2148 if (err) {
2149 return ERR_PTR(err);
2150 }
2151
2152 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2153 if (!nesmr) {
2154 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2155 return ERR_PTR(-ENOMEM);
2156 }
2157
2158 for (i = 0; i < num_phys_buf; i++) {
2159
2160 if ((i & 0x01FF) == 0) {
2161 if (root_pbl_index == 1) {
2162 /* Allocate the root PBL */
2163 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2164 &root_vpbl.pbl_pbase);
2165 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2166 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2167 if (!root_vpbl.pbl_vbase) {
2168 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2169 vpbl.pbl_pbase);
2170 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2171 kfree(nesmr);
2172 return ERR_PTR(-ENOMEM);
2173 }
2174 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2175 if (!root_vpbl.leaf_vpbl) {
2176 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2177 root_vpbl.pbl_pbase);
2178 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2179 vpbl.pbl_pbase);
2180 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2181 kfree(nesmr);
2182 return ERR_PTR(-ENOMEM);
2183 }
2184 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2185 root_vpbl.pbl_vbase[0].pa_high =
2186 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2187 root_vpbl.leaf_vpbl[0] = vpbl;
2188 }
2189 /* Allocate a 4K buffer for the PBL */
2190 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2191 &vpbl.pbl_pbase);
2192 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2193 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2194 if (!vpbl.pbl_vbase) {
2195 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2196 ibmr = ERR_PTR(-ENOMEM);
2197 kfree(nesmr);
2198 goto reg_phys_err;
2199 }
2200 /* Fill in the root table */
2201 if (1 <= root_pbl_index) {
2202 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2203 cpu_to_le32((u32)vpbl.pbl_pbase);
2204 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2205 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2206 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2207 }
2208 root_pbl_index++;
2209 cur_pbl_index = 0;
2210 }
3c2d774c 2211
3f32eb11
DW		 2212 mask = !buffer_list[i].size;
2213 if (i != 0)
2214 mask |= buffer_list[i].addr;
2215 if (i != num_phys_buf - 1)
2216 mask |= buffer_list[i].addr + buffer_list[i].size;
2217
2218 if (mask & ~PAGE_MASK) {
3c2d774c 2219 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
3f32eb11 2220 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
3c2d774c
GS		 2221 ibmr = ERR_PTR(-EINVAL);
2222 kfree(nesmr);
2223 goto reg_phys_err;
2224 }
2225
2226 region_length += buffer_list[i].size;
2227 if ((i != 0) && (single_page)) {
2228 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2229 single_page = 0;
2230 }
3f32eb11 2231 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
3c2d774c
GS		 2232 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2233 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2234 }
2235
2236 stag = stag_index << 8;
2237 stag |= driver_key;
2238 stag += (u32)stag_key;
2239
2240 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2241 " length = 0x%016lX, index = 0x%08X\n",
2242 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2243
3c2d774c
GS		 2244 /* Make the leaf PBL the root if only one PBL */
2245 if (root_pbl_index == 1) {
2246 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2247 }
2248
2249 if (single_page) {
2250 pbl_count = 0;
2251 } else {
2252 pbl_count = root_pbl_index;
2253 }
2254 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
0145f341
DW		 2255 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2256 &nesmr->pbls_used, &nesmr->pbl_4k);
3c2d774c
GS		 2257
2258 if (ret == 0) {
2259 nesmr->ibmr.rkey = stag;
2260 nesmr->ibmr.lkey = stag;
2261 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2262 ibmr = &nesmr->ibmr;
3c2d774c
GS		 2263 } else {
2264 kfree(nesmr);
2265 ibmr = ERR_PTR(-ENOMEM);
2266 }
2267
2268 reg_phys_err:
2269 /* free the resources */
2270 if (root_pbl_index == 1) {
2271 /* single PBL case */
2272 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2273 } else {
2274 for (i=0; i<root_pbl_index; i++) {
2275 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2276 root_vpbl.leaf_vpbl[i].pbl_pbase);
2277 }
2278 kfree(root_vpbl.leaf_vpbl);
2279 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2280 root_vpbl.pbl_pbase);
2281 }
2282
2283 return ibmr;
2284}
2285
2286
2287/**
2288 * nes_get_dma_mr
2289 */
2290static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2291{
2292 struct ib_phys_buf bl;
2293 u64 kva = 0;
2294
2295 nes_debug(NES_DBG_MR, "\n");
2296
2297 bl.size = (u64)0xffffffffffULL;
2298 bl.addr = 0;
2299 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2300}
2301
2302
2303/**
2304 * nes_reg_user_mr
2305 */
2306static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2307 u64 virt, int acc, struct ib_udata *udata)
2308{
2309 u64 iova_start;
2310 __le64 *pbl;
2311 u64 region_length;
2312 dma_addr_t last_dma_addr = 0;
2313 dma_addr_t first_dma_addr = 0;
2314 struct nes_pd *nespd = to_nespd(pd);
2315 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2316 struct nes_device *nesdev = nesvnic->nesdev;
2317 struct nes_adapter *nesadapter = nesdev->nesadapter;
2318 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
eeb8461e 2319 struct scatterlist *sg;
3c2d774c
GS		 2320 struct nes_ucontext *nes_ucontext;
2321 struct nes_pbl *nespbl;
2322 struct nes_mr *nesmr;
2323 struct ib_umem *region;
2324 struct nes_mem_reg_req req;
2325 struct nes_vpbl vpbl;
2326 struct nes_root_vpbl root_vpbl;
eeb8461e 2327 int entry, page_index;
3c2d774c
GS		 2328 int page_count = 0;
2329 int err, pbl_depth = 0;
2330 int chunk_pages;
2331 int ret;
2332 u32 stag;
2333 u32 stag_index = 0;
2334 u32 next_stag_index;
2335 u32 driver_key;
2336 u32 root_pbl_index = 0;
2337 u32 cur_pbl_index = 0;
2338 u32 skip_pages;
2339 u16 pbl_count;
2340 u8 single_page = 1;
2341 u8 stag_key;
eeb8461e 2342 int first_page = 1;
3c2d774c 2343
cb9fbc5c 2344 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
3c2d774c
GS		 2345 if (IS_ERR(region)) {
2346 return (struct ib_mr *)region;
2347 }
2348
2349 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2350 " offset = %u, page size = %u.\n",
2351 (unsigned long int)start, (unsigned long int)virt, (u32)length,
406f9e5f 2352 ib_umem_offset(region), region->page_size);
3c2d774c 2353
406f9e5f 2354 skip_pages = ((u32)ib_umem_offset(region)) >> 12;
3c2d774c 2355
e2e435f2
JL		 2356 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2357 ib_umem_release(region);
3c2d774c 2358 return ERR_PTR(-EFAULT);
e2e435f2 2359 }
3c2d774c
GS		 2360 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2361
2362 switch (req.reg_type) {
2363 case IWNES_MEMREG_TYPE_MEM:
2364 pbl_depth = 0;
2365 region_length = 0;
2366 vpbl.pbl_vbase = NULL;
2367 root_vpbl.pbl_vbase = NULL;
2368 root_vpbl.pbl_pbase = 0;
2369
2370 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2371 stag_key = (u8)next_stag_index;
2372
2373 driver_key = next_stag_index & 0x70000000;
2374
2375 next_stag_index >>= 8;
2376 next_stag_index %= nesadapter->max_mr;
2377
2378 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
81821644 2379 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
3c2d774c
GS		 2380 if (err) {
2381 ib_umem_release(region);
2382 return ERR_PTR(err);
2383 }
2384
2385 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2386 if (!nesmr) {
2387 ib_umem_release(region);
2388 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2389 return ERR_PTR(-ENOMEM);
2390 }
2391 nesmr->region = region;
2392
eeb8461e
YH		 2393 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2394 if (sg_dma_address(sg) & ~PAGE_MASK) {
2395 ib_umem_release(region);
2396 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2397 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2398 (unsigned int) sg_dma_address(sg));
2399 ibmr = ERR_PTR(-EINVAL);
2400 kfree(nesmr);
2401 goto reg_user_mr_err;
2402 }
3c2d774c 2403
eeb8461e
YH		 2404 if (!sg_dma_len(sg)) {
2405 ib_umem_release(region);
2406 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2407 stag_index);
2408 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2409 ibmr = ERR_PTR(-EINVAL);
2410 kfree(nesmr);
2411 goto reg_user_mr_err;
2412 }
3c2d774c 2413
eeb8461e
YH		 2414 region_length += sg_dma_len(sg);
2415 chunk_pages = sg_dma_len(sg) >> 12;
2416 region_length -= skip_pages << 12;
2417 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2418 skip_pages = 0;
406f9e5f 2419 if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
eeb8461e
YH		 2420 goto enough_pages;
2421 if ((page_count&0x01FF) == 0) {
2422 if (page_count >= 1024 * 512) {
2423 ib_umem_release(region);
2424 nes_free_resource(nesadapter,
2425 nesadapter->allocated_mrs, stag_index);
2426 kfree(nesmr);
2427 ibmr = ERR_PTR(-E2BIG);
2428 goto reg_user_mr_err;
2429 }
2430 if (root_pbl_index == 1) {
2431 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2432 8192, &root_vpbl.pbl_pbase);
2433 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2434 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2435 if (!root_vpbl.pbl_vbase) {
3c2d774c 2436 ib_umem_release(region);
eeb8461e
YH		 2437 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2438 vpbl.pbl_pbase);
2439 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2440 stag_index);
3c2d774c 2441 kfree(nesmr);
eeb8461e 2442 ibmr = ERR_PTR(-ENOMEM);
3c2d774c
GS		 2443 goto reg_user_mr_err;
2444 }
eeb8461e
YH		 2445 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2446 GFP_KERNEL);
2447 if (!root_vpbl.leaf_vpbl) {
3c2d774c 2448 ib_umem_release(region);
eeb8461e
YH		 2449 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2450 root_vpbl.pbl_pbase);
2451 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2452 vpbl.pbl_pbase);
2453 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2454 stag_index);
3c2d774c 2455 kfree(nesmr);
eeb8461e 2456 ibmr = ERR_PTR(-ENOMEM);
3c2d774c
GS		 2457 goto reg_user_mr_err;
2458 }
eeb8461e
YH		 2459 root_vpbl.pbl_vbase[0].pa_low =
2460 cpu_to_le32((u32)vpbl.pbl_pbase);
2461 root_vpbl.pbl_vbase[0].pa_high =
2462 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2463 root_vpbl.leaf_vpbl[0] = vpbl;
3c2d774c 2464 }
eeb8461e
YH		 2465 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2466 &vpbl.pbl_pbase);
2467 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2468 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2469 if (!vpbl.pbl_vbase) {
2470 ib_umem_release(region);
2471 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2472 ibmr = ERR_PTR(-ENOMEM);
2473 kfree(nesmr);
2474 goto reg_user_mr_err;
2475 }
2476 if (1 <= root_pbl_index) {
2477 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2478 cpu_to_le32((u32)vpbl.pbl_pbase);
2479 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2480 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2481 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2482 }
2483 root_pbl_index++;
2484 cur_pbl_index = 0;
2485 }
2486 if (single_page) {
2487 if (page_count != 0) {
2488 if ((last_dma_addr+4096) !=
2489 (sg_dma_address(sg)+
2490 (page_index*4096)))
2491 single_page = 0;
2492 last_dma_addr = sg_dma_address(sg)+
2493 (page_index*4096);
2494 } else {
2495 first_dma_addr = sg_dma_address(sg)+
2496 (page_index*4096);
2497 last_dma_addr = first_dma_addr;
3c2d774c 2498 }
3c2d774c 2499 }
eeb8461e
YH		 2500
2501 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2502 cpu_to_le32((u32)(sg_dma_address(sg)+
2503 (page_index*4096)));
2504 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2505 cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2506 (page_index*4096))) >> 32)));
2507 cur_pbl_index++;
2508 page_count++;
3c2d774c
GS		 2509 }
2510 }
eeb8461e 2511
3c2d774c
GS		 2512 enough_pages:
2513 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2514 " stag_key=0x%08x\n",
2515 stag_index, driver_key, stag_key);
2516 stag = stag_index << 8;
2517 stag |= driver_key;
2518 stag += (u32)stag_key;
3c2d774c
GS		 2519
2520 iova_start = virt;
2521 /* Make the leaf PBL the root if only one PBL */
2522 if (root_pbl_index == 1) {
2523 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2524 }
2525
2526 if (single_page) {
2527 pbl_count = 0;
2528 } else {
2529 pbl_count = root_pbl_index;
2530 first_dma_addr = 0;
2531 }
2532 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2533 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2534 stag, (unsigned int)iova_start,
2535 (unsigned int)region_length, stag_index,
2536 (unsigned long long)region->length, pbl_count);
0145f341
DW		 2537 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2538 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2539 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
3c2d774c
GS		 2540
2541 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2542
2543 if (ret == 0) {
2544 nesmr->ibmr.rkey = stag;
2545 nesmr->ibmr.lkey = stag;
2546 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2547 ibmr = &nesmr->ibmr;
3c2d774c
GS		 2548 } else {
2549 ib_umem_release(region);
2550 kfree(nesmr);
2551 ibmr = ERR_PTR(-ENOMEM);
2552 }
2553
2554 reg_user_mr_err:
2555 /* free the resources */
2556 if (root_pbl_index == 1) {
2557 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2558 vpbl.pbl_pbase);
2559 } else {
2560 for (page_index=0; page_index<root_pbl_index; page_index++) {
2561 pci_free_consistent(nesdev->pcidev, 4096,
2562 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2563 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2564 }
2565 kfree(root_vpbl.leaf_vpbl);
2566 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2567 root_vpbl.pbl_pbase);
2568 }
2569
2570 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2571
2572 return ibmr;
3c2d774c
GS		 2573 case IWNES_MEMREG_TYPE_QP:
2574 case IWNES_MEMREG_TYPE_CQ:
7d9c199a
TN		 2575 if (!region->length) {
2576 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2577 ib_umem_release(region);
2578 return ERR_PTR(-EINVAL);
2579 }
3c2d774c
GS		 2580 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2581 if (!nespbl) {
2582 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2583 ib_umem_release(region);
2584 return ERR_PTR(-ENOMEM);
2585 }
2586 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2587 if (!nesmr) {
2588 ib_umem_release(region);
2589 kfree(nespbl);
2590 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2591 return ERR_PTR(-ENOMEM);
2592 }
2593 nesmr->region = region;
2594 nes_ucontext = to_nesucontext(pd->uobject->context);
2595 pbl_depth = region->length >> 12;
2596 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2597 nespbl->pbl_size = pbl_depth*sizeof(u64);
2598 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2599 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2600 } else {
2601 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2602 }
2603
2604 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2605 nespbl->pbl_size, pbl_depth);
2606 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2607 &nespbl->pbl_pbase);
2608 if (!pbl) {
2609 ib_umem_release(region);
2610 kfree(nesmr);
2611 kfree(nespbl);
2612 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2613 return ERR_PTR(-ENOMEM);
2614 }
2615
2616 nespbl->pbl_vbase = (u64 *)pbl;
2617 nespbl->user_base = start;
71e0957c 2618 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
3c2d774c 2619 " pbl_vbase=%p user_base=0x%lx\n",
71e0957c
RD		 2620 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2621 (void *) nespbl->pbl_vbase, nespbl->user_base);
3c2d774c 2622
eeb8461e
YH		 2623 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2624 chunk_pages = sg_dma_len(sg) >> 12;
2625 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2626 if (first_page) {
2627 nespbl->page = sg_page(sg);
2628 first_page = 0;
2629 }
2630
2631 for (page_index = 0; page_index < chunk_pages; page_index++) {
2632 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2633 (sg_dma_address(sg)+
2634 (page_index*4096)));
2635 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2636 (sg_dma_address(sg)+
2637 (page_index*4096)))>>32);
2638 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2639 (unsigned long long)*pbl,
2640 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2641 pbl++;
3c2d774c
GS		 2642 }
2643 }
eeb8461e 2644
3c2d774c
GS		 2645 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2646 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2647 } else {
2648 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2649 }
2650 nesmr->ibmr.rkey = -1;
2651 nesmr->ibmr.lkey = -1;
2652 nesmr->mode = req.reg_type;
2653 return &nesmr->ibmr;
3c2d774c
GS		 2654 }
2655
e2e435f2 2656 ib_umem_release(region);
3c2d774c
GS		 2657 return ERR_PTR(-ENOSYS);
2658}
2659
2660
2661/**
2662 * nes_dereg_mr
2663 */
2664static int nes_dereg_mr(struct ib_mr *ib_mr)
2665{
2666 struct nes_mr *nesmr = to_nesmr(ib_mr);
2667 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2668 struct nes_device *nesdev = nesvnic->nesdev;
2669 struct nes_adapter *nesadapter = nesdev->nesadapter;
2670 struct nes_hw_cqp_wqe *cqp_wqe;
2671 struct nes_cqp_request *cqp_request;
2672 unsigned long flags;
2673 int ret;
2674 u16 major_code;
2675 u16 minor_code;
2676
2677 if (nesmr->region) {
2678 ib_umem_release(nesmr->region);
2679 }
2680 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2681 kfree(nesmr);
2682 return 0;
2683 }
2684
2685 /* Deallocate the region with the adapter */
2686
2687 cqp_request = nes_get_cqp_request(nesdev);
2688 if (cqp_request == NULL) {
2689 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2690 return -ENOMEM;
2691 }
2692 cqp_request->waiting = 1;
2693 cqp_wqe = &cqp_request->cqp_wqe;
2694
3c2d774c
GS		 2695 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2696 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2697 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2698 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2699 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2700
2701 atomic_set(&cqp_request->refcount, 2);
8294f297 2702 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 2703
2704 /* Wait for CQP */
2705 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2706 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2707 NES_EVENT_TIMEOUT);
2708 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2709 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2710 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2711
3c2d774c
GS		 2712 major_code = cqp_request->major_code;
2713 minor_code = cqp_request->minor_code;
1ff66e8c
RD		 2714
2715 nes_put_cqp_request(nesdev, cqp_request);
2716
3c2d774c
GS		 2717 if (!ret) {
2718 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2719 " ib_mr=%p, rkey = 0x%08X\n",
2720 ib_mr, ib_mr->rkey);
2721 return -ETIME;
2722 } else if (major_code) {
2723 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2724 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2725 major_code, minor_code, ib_mr, ib_mr->rkey);
2726 return -EIO;
dae5d13a
DW		 2727 }
2728
2729 if (nesmr->pbls_used != 0) {
2730 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2731 if (nesmr->pbl_4k) {
2732 nesadapter->free_4kpbl += nesmr->pbls_used;
2733 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2734 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2735 "exceeded the max(%u)\n",
2736 nesadapter->free_4kpbl,
2737 nesadapter->max_4kpbl);
2738 } else {
2739 nesadapter->free_256pbl += nesmr->pbls_used;
2740 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2741 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2742 "exceeded the max(%u)\n",
2743 nesadapter->free_256pbl,
2744 nesadapter->max_256pbl);
2745 }
2746 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2747 }
2748 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2749 (ib_mr->rkey & 0x0fffff00) >> 8);
2750
2751 kfree(nesmr);
2752
2753 return 0;
3c2d774c
GS		 2754}
2755
2756
2757/**
2758 * show_rev
2759 */
f4e91eb4
TJ		 2760static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2761 char *buf)
3c2d774c
GS		 2762{
2763 struct nes_ib_device *nesibdev =
f4e91eb4 2764 container_of(dev, struct nes_ib_device, ibdev.dev);
3c2d774c
GS		 2765 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2766
2767 nes_debug(NES_DBG_INIT, "\n");
2768 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2769}
2770
2771
2772/**
2773 * show_fw_ver
2774 */
f4e91eb4
TJ		 2775static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2776 char *buf)
3c2d774c
GS		 2777{
2778 struct nes_ib_device *nesibdev =
f4e91eb4 2779 container_of(dev, struct nes_ib_device, ibdev.dev);
3c2d774c
GS		 2780 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2781
2782 nes_debug(NES_DBG_INIT, "\n");
0e4562da
CT		 2783 return sprintf(buf, "%u.%u\n",
2784 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2785 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
3c2d774c
GS		 2786}
2787
2788
2789/**
2790 * show_hca
2791 */
f4e91eb4
TJ		 2792static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2793 char *buf)
3c2d774c
GS		 2794{
2795 nes_debug(NES_DBG_INIT, "\n");
2796 return sprintf(buf, "NES020\n");
2797}
2798
2799
2800/**
2801 * show_board
2802 */
f4e91eb4
TJ		 2803static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2804 char *buf)
3c2d774c
GS		 2805{
2806 nes_debug(NES_DBG_INIT, "\n");
2807 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2808}
2809
2810
f4e91eb4
TJ		 2811static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2812static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2813static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2814static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
3c2d774c 2815
f4e91eb4
TJ		 2816static struct device_attribute *nes_dev_attributes[] = {
2817 &dev_attr_hw_rev,
2818 &dev_attr_fw_ver,
2819 &dev_attr_hca_type,
2820 &dev_attr_board_id
3c2d774c
GS		 2821};
2822
2823
2824/**
2825 * nes_query_qp
2826 */
2827static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2828 int attr_mask, struct ib_qp_init_attr *init_attr)
2829{
2830 struct nes_qp *nesqp = to_nesqp(ibqp);
2831
2832 nes_debug(NES_DBG_QP, "\n");
2833
2834 attr->qp_access_flags = 0;
2835 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2836 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2837 attr->cap.max_recv_sge = 1;
eadde3a1
CT		 2838 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2839 attr->cap.max_inline_data = 0;
2840 else
2841 attr->cap.max_inline_data = 64;
3c2d774c
GS		 2842
2843 init_attr->event_handler = nesqp->ibqp.event_handler;
2844 init_attr->qp_context = nesqp->ibqp.qp_context;
2845 init_attr->send_cq = nesqp->ibqp.send_cq;
2846 init_attr->recv_cq = nesqp->ibqp.recv_cq;
4127c365 2847 init_attr->srq = nesqp->ibqp.srq;
3c2d774c
GS		 2848 init_attr->cap = attr->cap;
2849
2850 return 0;
2851}
2852
2853
2854/**
2855 * nes_hw_modify_qp
2856 */
2857int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
8b1c9dc4 2858 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
3c2d774c
GS		 2859{
2860 struct nes_hw_cqp_wqe *cqp_wqe;
2861 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2862 /* struct iw_cm_event cm_event; */
2863 struct nes_cqp_request *cqp_request;
3c2d774c
GS		 2864 int ret;
2865 u16 major_code;
2866
2867 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2868 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2869
2870 cqp_request = nes_get_cqp_request(nesdev);
2871 if (cqp_request == NULL) {
2872 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2873 return -ENOMEM;
2874 }
2875 if (wait_completion) {
2876 cqp_request->waiting = 1;
2877 } else {
2878 cqp_request->waiting = 0;
2879 }
2880 cqp_wqe = &cqp_request->cqp_wqe;
2881
2882 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2883 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2884 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2885 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2886 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2887 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2888 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2889
8b1c9dc4
DW		 2890 /* If sending a terminate message, fill in the length (in words) */
2891 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2892 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2893 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2894 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2895 }
2896
3c2d774c 2897 atomic_set(&cqp_request->refcount, 2);
8294f297 2898 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 2899
2900 /* Wait for CQP */
2901 if (wait_completion) {
2902 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2903 nesqp->hwqp.qp_id); */
2904 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2905 NES_EVENT_TIMEOUT);
2906 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2907 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2908 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2909 major_code = cqp_request->major_code;
2910 if (major_code) {
2911 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2912 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2913 nesqp->hwqp.qp_id, cqp_request->major_code,
2914 cqp_request->minor_code, next_iwarp_state);
2915 }
1ff66e8c
RD		 2916
2917 nes_put_cqp_request(nesdev, cqp_request);
2918
3c2d774c
GS		 2919 if (!ret)
2920 return -ETIME;
2921 else if (major_code)
2922 return -EIO;
2923 else
2924 return 0;
2925 } else {
2926 return 0;
2927 }
2928}
2929
2930
2931/**
2932 * nes_modify_qp
2933 */
2934int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2935 int attr_mask, struct ib_udata *udata)
2936{
2937 struct nes_qp *nesqp = to_nesqp(ibqp);
2938 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2939 struct nes_device *nesdev = nesvnic->nesdev;
2940 /* u32 cqp_head; */
2941 /* u32 counter; */
2942 u32 next_iwarp_state = 0;
2943 int err;
2944 unsigned long qplockflags;
2945 int ret;
2946 u16 original_last_aeq;
2947 u8 issue_modify_qp = 0;
3c2d774c
GS		 2948 u8 dont_wait = 0;
2949
2950 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2951 " iwarp_state=0x%X, refcount=%d\n",
2952 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2953 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2954
3c2d774c
GS		 2955 spin_lock_irqsave(&nesqp->lock, qplockflags);
2956
2957 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2958 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2959 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2960 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2961
2962 if (attr_mask & IB_QP_STATE) {
2963 switch (attr->qp_state) {
2964 case IB_QPS_INIT:
2965 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\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_RTR:
2975 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2976 nesqp->hwqp.qp_id);
2977 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2978 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2979 return -EINVAL;
2980 }
2981 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2982 issue_modify_qp = 1;
2983 break;
2984 case IB_QPS_RTS:
2985 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2986 nesqp->hwqp.qp_id);
2987 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2988 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2989 return -EINVAL;
2990 }
2991 if (nesqp->cm_id == NULL) {
2992 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2993 nesqp->hwqp.qp_id );
2994 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2995 return -EINVAL;
2996 }
2997 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2998 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2999 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
3000 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
3001 issue_modify_qp = 1;
3002 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
3003 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
3004 nesqp->hte_added = 1;
3005 break;
3006 case IB_QPS_SQD:
3007 issue_modify_qp = 1;
3008 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
3009 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
3010 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3011 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 3012 return 0;
3013 } else {
3014 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
3015 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3016 " ignored due to current iWARP state\n",
3017 nesqp->hwqp.qp_id);
3018 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 3019 return -EINVAL;
3020 }
3021 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
3022 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
3023 " already done based on hw state.\n",
3024 nesqp->hwqp.qp_id);
3025 issue_modify_qp = 0;
3c2d774c
GS		 3026 }
3027 switch (nesqp->hw_iwarp_state) {
3028 case NES_AEQE_IWARP_STATE_CLOSING:
3029 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
d5fb476a 3030 break;
3c2d774c
GS		 3031 case NES_AEQE_IWARP_STATE_TERMINATE:
3032 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3033 break;
3034 case NES_AEQE_IWARP_STATE_ERROR:
3035 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3036 break;
3037 default:
3038 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3c2d774c
GS		 3039 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
3040 break;
3041 }
3042 }
3043 break;
3044 case IB_QPS_SQE:
3045 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
3046 nesqp->hwqp.qp_id);
3047 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
3048 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 3049 return -EINVAL;
3050 }
3051 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3052 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
3053 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
3054 issue_modify_qp = 1;
3c2d774c
GS		 3055 break;
3056 case IB_QPS_ERR:
3057 case IB_QPS_RESET:
3058 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
3059 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 3060 return -EINVAL;
3061 }
3062 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
3063 nesqp->hwqp.qp_id);
8b1c9dc4
DW		 3064 if (nesqp->term_flags)
3065 del_timer(&nesqp->terminate_timer);
3066
3c2d774c
GS		 3067 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
3068 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
3069 if (nesqp->hte_added) {
3070 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
3071 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
3072 nesqp->hte_added = 0;
3073 }
3074 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
cd6860eb 3075 (nesdev->iw_status) &&
3c2d774c
GS		 3076 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
3077 next_iwarp_state |= NES_CQP_QP_RESET;
3c2d774c
GS		 3078 } else {
3079 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
3080 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
3081 dont_wait = 1;
3082 }
3083 issue_modify_qp = 1;
3084 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
3085 break;
3086 default:
3087 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 3088 return -EINVAL;
3089 break;
3090 }
3091
3092 nesqp->ibqp_state = attr->qp_state;
a67b078c
TN		 3093 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3094 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3095 nesqp->iwarp_state);
3c2d774c
GS		 3096 }
3097
3098 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3099 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3100 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3101 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3102 issue_modify_qp = 1;
3103 }
3104 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3105 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3106 issue_modify_qp = 1;
3107 }
3108 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3109 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3110 issue_modify_qp = 1;
3111 }
3112 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3113 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3114 issue_modify_qp = 1;
3115 }
3116
3117 if (nesqp->user_mode) {
3118 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3119 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3120 issue_modify_qp = 1;
3121 }
3122 }
3123
3124 original_last_aeq = nesqp->last_aeq;
3125 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3126
3127 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3128
3129 ret = 0;
3130
3131
3132 if (issue_modify_qp) {
3133 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
8b1c9dc4 3134 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3c2d774c
GS		 3135 if (ret)
3136 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3137 " failed for QP%u.\n",
3138 next_iwarp_state, nesqp->hwqp.qp_id);
3139
3140 }
3141
3142 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3143 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3144 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3145 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3146 original_last_aeq, nesqp->last_aeq);
349850f0 3147 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
3c2d774c
GS		 3148 if (dont_wait) {
3149 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3150 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3151 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3152 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3153 original_last_aeq, nesqp->last_aeq);
3154 /* this one is for the cm_disconnect thread */
3c2d774c
GS		 3155 spin_lock_irqsave(&nesqp->lock, qplockflags);
3156 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3157 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3158 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3159 nes_cm_disconn(nesqp);
3160 } else {
3161 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3162 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3c2d774c
GS		 3163 }
3164 } else {
3165 spin_lock_irqsave(&nesqp->lock, qplockflags);
3166 if (nesqp->cm_id) {
3167 /* These two are for the timer thread */
3168 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3c2d774c
GS		 3169 nesqp->cm_id->add_ref(nesqp->cm_id);
3170 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3171 " need ae to finish up, original_last_aeq = 0x%04X."
3172 " last_aeq = 0x%04X, scheduling timer.\n",
3173 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3174 original_last_aeq, nesqp->last_aeq);
3175 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3176 }
3177 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3178 } else {
3179 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3180 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3181 " need ae to finish up, original_last_aeq = 0x%04X."
3182 " last_aeq = 0x%04X.\n",
3183 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3184 original_last_aeq, nesqp->last_aeq);
3185 }
3186 }
3187 } else {
3188 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3189 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3190 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3191 original_last_aeq, nesqp->last_aeq);
3c2d774c
GS		 3192 }
3193 } else {
3194 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3195 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3196 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3197 original_last_aeq, nesqp->last_aeq);
3c2d774c
GS		 3198 }
3199
3200 err = 0;
3201
3202 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3203 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3204
3205 return err;
3206}
3207
3208
3209/**
3210 * nes_muticast_attach
3211 */
3212static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3213{
3214 nes_debug(NES_DBG_INIT, "\n");
3215 return -ENOSYS;
3216}
3217
3218
3219/**
3220 * nes_multicast_detach
3221 */
3222static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3223{
3224 nes_debug(NES_DBG_INIT, "\n");
3225 return -ENOSYS;
3226}
3227
3228
3229/**
3230 * nes_process_mad
3231 */
3232static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
a97e2d86
IW		 3233 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
3234 const struct ib_mad *in_mad, struct ib_mad *out_mad)
3c2d774c
GS		 3235{
3236 nes_debug(NES_DBG_INIT, "\n");
3237 return -ENOSYS;
3238}
3239
3240static inline void
3241fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3242{
3243 int sge_index;
3244 int total_payload_length = 0;
3245 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3246 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3247 ib_wr->sg_list[sge_index].addr);
3248 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3249 ib_wr->sg_list[sge_index].length);
3250 if (uselkey)
3251 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3252 (ib_wr->sg_list[sge_index].lkey));
3253 else
3254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3255
3256 total_payload_length += ib_wr->sg_list[sge_index].length;
3257 }
3258 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3259 total_payload_length);
3260 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3261 total_payload_length);
3262}
3263
3264/**
3265 * nes_post_send
3266 */
3267static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3268 struct ib_send_wr **bad_wr)
3269{
3270 u64 u64temp;
3271 unsigned long flags = 0;
3272 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3273 struct nes_device *nesdev = nesvnic->nesdev;
3274 struct nes_qp *nesqp = to_nesqp(ibqp);
3275 struct nes_hw_qp_wqe *wqe;
649fe4ae 3276 int err = 0;
3c2d774c
GS		 3277 u32 qsize = nesqp->hwqp.sq_size;
3278 u32 head;
649fe4ae
CT		 3279 u32 wqe_misc = 0;
3280 u32 wqe_count = 0;
3c2d774c 3281 u32 counter;
3c2d774c 3282
e5dec394
FZ		 3283 if (nesqp->ibqp_state > IB_QPS_RTS) {
3284 err = -EINVAL;
3285 goto out;
3286 }
3c2d774c 3287
5880ff19 3288 spin_lock_irqsave(&nesqp->lock, flags);
3c2d774c
GS		 3289
3290 head = nesqp->hwqp.sq_head;
3291
3292 while (ib_wr) {
8b1c9dc4
DW		 3293 /* Check for QP error */
3294 if (nesqp->term_flags) {
3295 err = -EINVAL;
3296 break;
3297 }
3298
3c2d774c
GS		 3299 /* Check for SQ overflow */
3300 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
831d06cf 3301 err = -ENOMEM;
3c2d774c
GS		 3302 break;
3303 }
3304
3305 wqe = &nesqp->hwqp.sq_vbase[head];
3306 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3307 nesqp->hwqp.qp_id, wqe, head); */
3308 nes_fill_init_qp_wqe(wqe, nesqp, head);
3309 u64temp = (u64)(ib_wr->wr_id);
3310 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3311 u64temp);
649fe4ae
CT		 3312 switch (ib_wr->opcode) {
3313 case IB_WR_SEND:
3314 case IB_WR_SEND_WITH_INV:
3315 if (IB_WR_SEND == ib_wr->opcode) {
3316 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3317 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3318 else
3319 wqe_misc = NES_IWARP_SQ_OP_SEND;
3320 } else {
3321 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3322 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3323 else
3324 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3c2d774c 3325
649fe4ae
CT		 3326 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3327 ib_wr->ex.invalidate_rkey);
3328 }
3c2d774c 3329
649fe4ae
CT		 3330 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3331 err = -EINVAL;
3332 break;
3c2d774c
GS		 3333 }
3334
649fe4ae
CT		 3335 if (ib_wr->send_flags & IB_SEND_FENCE)
3336 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3337
3338 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3339 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3340 (ib_wr->sg_list[0].length <= 64)) {
3341 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3342 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3343 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3344 ib_wr->sg_list[0].length);
3345 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3346 } else {
3347 fill_wqe_sg_send(wqe, ib_wr, 1);
3348 }
3349
3350 break;
3351 case IB_WR_RDMA_WRITE:
3352 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3353 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3354 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3355 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3356 err = -EINVAL;
3357 break;
3358 }
3359
3360 if (ib_wr->send_flags & IB_SEND_FENCE)
3361 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3362
3363 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3364 ib_wr->wr.rdma.rkey);
3365 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3366 ib_wr->wr.rdma.remote_addr);
3367
3368 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3369 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3370 (ib_wr->sg_list[0].length <= 64)) {
3371 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3372 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3373 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3374 ib_wr->sg_list[0].length);
3375 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3376 } else {
3377 fill_wqe_sg_send(wqe, ib_wr, 1);
3378 }
3379
3380 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3381 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3382 break;
3383 case IB_WR_RDMA_READ:
3384 case IB_WR_RDMA_READ_WITH_INV:
3385 /* iWARP only supports 1 sge for RDMA reads */
3386 if (ib_wr->num_sge > 1) {
3387 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3388 ib_wr->num_sge);
3389 err = -EINVAL;
3390 break;
3391 }
3392 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3393 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3394 } else {
3395 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3396 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3397 ib_wr->ex.invalidate_rkey);
3398 }
3399
3400 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
3401 ib_wr->wr.rdma.remote_addr);
3402 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
3403 ib_wr->wr.rdma.rkey);
3404 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3405 ib_wr->sg_list->length);
3406 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3407 ib_wr->sg_list->addr);
3408 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3409 ib_wr->sg_list->lkey);
3410 break;
3411 case IB_WR_LOCAL_INV:
3412 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3413 set_wqe_32bit_value(wqe->wqe_words,
3414 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3415 ib_wr->ex.invalidate_rkey);
3416 break;
e293a26f
CT		 3417 case IB_WR_FAST_REG_MR:
3418 {
3419 int i;
3420 int flags = ib_wr->wr.fast_reg.access_flags;
3421 struct nes_ib_fast_reg_page_list *pnesfrpl =
3422 container_of(ib_wr->wr.fast_reg.page_list,
3423 struct nes_ib_fast_reg_page_list,
3424 ibfrpl);
3425 u64 *src_page_list = pnesfrpl->ibfrpl.page_list;
3426 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva;
3427
3428 if (ib_wr->wr.fast_reg.page_list_len >
3429 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3430 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3431 err = -EINVAL;
3432 break;
3433 }
3434 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3435 set_wqe_64bit_value(wqe->wqe_words,
3436 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3437 ib_wr->wr.fast_reg.iova_start);
3438 set_wqe_32bit_value(wqe->wqe_words,
3439 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3440 ib_wr->wr.fast_reg.length);
94f622bd
TN		 3441 set_wqe_32bit_value(wqe->wqe_words,
3442 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
e293a26f
CT		 3443 set_wqe_32bit_value(wqe->wqe_words,
3444 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3445 ib_wr->wr.fast_reg.rkey);
3446 /* Set page size: */
3447 if (ib_wr->wr.fast_reg.page_shift == 12) {
3448 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3449 } else if (ib_wr->wr.fast_reg.page_shift == 21) {
3450 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3451 } else {
3452 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3453 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3454 err = -EINVAL;
3455 break;
3456 }
3457 /* Set access_flags */
3458 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3459 if (flags & IB_ACCESS_LOCAL_WRITE)
3460 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3461
3462 if (flags & IB_ACCESS_REMOTE_WRITE)
3463 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3464
3465 if (flags & IB_ACCESS_REMOTE_READ)
3466 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3467
3468 if (flags & IB_ACCESS_MW_BIND)
3469 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3470
3471 /* Fill in PBL info: */
3472 if (ib_wr->wr.fast_reg.page_list_len >
3473 pnesfrpl->ibfrpl.max_page_list_len) {
3474 nes_debug(NES_DBG_IW_TX, "Invalid page list length,"
3475 " ib_wr=%p, value=%u, max=%u\n",
3476 ib_wr, ib_wr->wr.fast_reg.page_list_len,
3477 pnesfrpl->ibfrpl.max_page_list_len);
3478 err = -EINVAL;
3479 break;
3480 }
3481
3482 set_wqe_64bit_value(wqe->wqe_words,
3483 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3484 pnesfrpl->nes_wqe_pbl.paddr);
3485
3486 set_wqe_32bit_value(wqe->wqe_words,
3487 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3488 ib_wr->wr.fast_reg.page_list_len * 8);
3489
3490 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++)
3491 dst_page_list[i] = cpu_to_le64(src_page_list[i]);
3492
183ae74b
RD		 3493 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %llx, "
3494 "length: %d, rkey: %0x, pgl_paddr: %llx, "
e293a26f 3495 "page_list_len: %u, wqe_misc: %x\n",
183ae74b 3496 (unsigned long long) ib_wr->wr.fast_reg.iova_start,
e293a26f
CT		 3497 ib_wr->wr.fast_reg.length,
3498 ib_wr->wr.fast_reg.rkey,
183ae74b 3499 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr,
e293a26f
CT		 3500 ib_wr->wr.fast_reg.page_list_len,
3501 wqe_misc);
3502 break;
3503 }
649fe4ae
CT		 3504 default:
3505 /* error */
3506 err = -EINVAL;
3507 break;
3508 }
3509
e5dec394
FZ		 3510 if (err)
3511 break;
3512
d14152da 3513 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3c2d774c 3514 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
d14152da 3515
3c2d774c
GS		 3516 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3517
3518 ib_wr = ib_wr->next;
3519 head++;
3520 wqe_count++;
3521 if (head >= qsize)
3522 head = 0;
3523
3524 }
3525
3526 nesqp->hwqp.sq_head = head;
3527 barrier();
3528 while (wqe_count) {
3529 counter = min(wqe_count, ((u32)255));
3530 wqe_count -= counter;
3531 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3532 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3533 }
3534
5880ff19 3535 spin_unlock_irqrestore(&nesqp->lock, flags);
3c2d774c 3536
e5dec394 3537out:
3c2d774c
GS		 3538 if (err)
3539 *bad_wr = ib_wr;
3540 return err;
3541}
3542
3543
3544/**
3545 * nes_post_recv
3546 */
3547static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3548 struct ib_recv_wr **bad_wr)
3549{
3550 u64 u64temp;
3551 unsigned long flags = 0;
3552 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3553 struct nes_device *nesdev = nesvnic->nesdev;
3554 struct nes_qp *nesqp = to_nesqp(ibqp);
3555 struct nes_hw_qp_wqe *wqe;
3556 int err = 0;
3557 int sge_index;
3558 u32 qsize = nesqp->hwqp.rq_size;
3559 u32 head;
3560 u32 wqe_count = 0;
3561 u32 counter;
3562 u32 total_payload_length;
3563
4293fdc1
FZ		 3564 if (nesqp->ibqp_state > IB_QPS_RTS) {
3565 err = -EINVAL;
3566 goto out;
3567 }
3c2d774c 3568
5880ff19 3569 spin_lock_irqsave(&nesqp->lock, flags);
3c2d774c
GS		 3570
3571 head = nesqp->hwqp.rq_head;
3572
3573 while (ib_wr) {
8b1c9dc4
DW		 3574 /* Check for QP error */
3575 if (nesqp->term_flags) {
3576 err = -EINVAL;
3577 break;
3578 }
3579
3c2d774c
GS		 3580 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3581 err = -EINVAL;
3582 break;
3583 }
3584 /* Check for RQ overflow */
3585 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
831d06cf 3586 err = -ENOMEM;
3c2d774c
GS		 3587 break;
3588 }
3589
3590 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3591 wqe = &nesqp->hwqp.rq_vbase[head];
3592
3593 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3594 nesqp->hwqp.qp_id, wqe, head); */
3595 nes_fill_init_qp_wqe(wqe, nesqp, head);
3596 u64temp = (u64)(ib_wr->wr_id);
3597 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3598 u64temp);
3599 total_payload_length = 0;
3600 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3601 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3602 ib_wr->sg_list[sge_index].addr);
3603 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3604 ib_wr->sg_list[sge_index].length);
3605 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3606 ib_wr->sg_list[sge_index].lkey);
3607
3608 total_payload_length += ib_wr->sg_list[sge_index].length;
3609 }
3610 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3611 total_payload_length);
3612
3613 ib_wr = ib_wr->next;
3614 head++;
3615 wqe_count++;
3616 if (head >= qsize)
3617 head = 0;
3618 }
3619
3620 nesqp->hwqp.rq_head = head;
3621 barrier();
3622 while (wqe_count) {
3623 counter = min(wqe_count, ((u32)255));
3624 wqe_count -= counter;
3625 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3626 }
3627
5880ff19 3628 spin_unlock_irqrestore(&nesqp->lock, flags);
3c2d774c 3629
4293fdc1 3630out:
3c2d774c
GS		 3631 if (err)
3632 *bad_wr = ib_wr;
3633 return err;
3634}
3635
3636
3637/**
3638 * nes_poll_cq
3639 */
3640static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3641{
3642 u64 u64temp;
3643 u64 wrid;
3c2d774c
GS		 3644 unsigned long flags = 0;
3645 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3646 struct nes_device *nesdev = nesvnic->nesdev;
3647 struct nes_cq *nescq = to_nescq(ibcq);
3648 struct nes_qp *nesqp;
3649 struct nes_hw_cqe cqe;
3650 u32 head;
6eed5e7c 3651 u32 wq_tail = 0;
3c2d774c
GS		 3652 u32 cq_size;
3653 u32 cqe_count = 0;
3654 u32 wqe_index;
3655 u32 u32temp;
6eed5e7c
DW		 3656 u32 move_cq_head = 1;
3657 u32 err_code;
3c2d774c
GS		 3658
3659 nes_debug(NES_DBG_CQ, "\n");
3660
5880ff19 3661 spin_lock_irqsave(&nescq->lock, flags);
3c2d774c
GS		 3662
3663 head = nescq->hw_cq.cq_head;
3664 cq_size = nescq->hw_cq.cq_size;
3665
3666 while (cqe_count < num_entries) {
5ee21fe0
DW		 3667 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3668 NES_CQE_VALID) == 0)
3669 break;
3670
3671 /*
3672 * Make sure we read CQ entry contents *after*
3673 * we've checked the valid bit.
3674 */
3675 rmb();
3676
3677 cqe = nescq->hw_cq.cq_vbase[head];
5ee21fe0
DW		 3678 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3679 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3680 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3681 /* parse CQE, get completion context from WQE (either rq or sq) */
3682 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3683 ((u64)u32temp);
3684
3685 if (u64temp) {
3686 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3c2d774c
GS		 3687 memset(entry, 0, sizeof *entry);
3688 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3689 entry->status = IB_WC_SUCCESS;
3690 } else {
320cdfd2
DW		 3691 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3692 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3693 entry->status = err_code & 0x0000ffff;
3694
3695 /* The rest of the cqe's will be marked as flushed */
3696 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3697 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3698 NES_IWARP_CQE_MINOR_FLUSH);
3699 } else
3700 entry->status = IB_WC_WR_FLUSH_ERR;
3c2d774c
GS		 3701 }
3702
3703 entry->qp = &nesqp->ibqp;
3704 entry->src_qp = nesqp->hwqp.qp_id;
3705
3706 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3707 if (nesqp->skip_lsmm) {
3708 nesqp->skip_lsmm = 0;
5ee21fe0 3709 nesqp->hwqp.sq_tail++;
3c2d774c
GS		 3710 }
3711
3712 /* Working on a SQ Completion*/
6eed5e7c 3713 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c 3714 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
6eed5e7c 3715 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c 3716 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
6eed5e7c 3717 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c
GS		 3718 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3719
6eed5e7c 3720 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c
GS		 3721 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3722 case NES_IWARP_SQ_OP_RDMAW:
3723 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3724 entry->opcode = IB_WC_RDMA_WRITE;
3725 break;
3726 case NES_IWARP_SQ_OP_RDMAR:
3727 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3728 entry->opcode = IB_WC_RDMA_READ;
6eed5e7c 3729 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c
GS		 3730 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3731 break;
3732 case NES_IWARP_SQ_OP_SENDINV:
3733 case NES_IWARP_SQ_OP_SENDSEINV:
3734 case NES_IWARP_SQ_OP_SEND:
3735 case NES_IWARP_SQ_OP_SENDSE:
3736 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3737 entry->opcode = IB_WC_SEND;
3738 break;
649fe4ae 3739 case NES_IWARP_SQ_OP_LOCINV:
4a4b03f4 3740 entry->opcode = IB_WC_LOCAL_INV;
649fe4ae 3741 break;
e293a26f
CT		 3742 case NES_IWARP_SQ_OP_FAST_REG:
3743 entry->opcode = IB_WC_FAST_REG_MR;
3744 break;
3c2d774c 3745 }
6eed5e7c
DW		 3746
3747 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3748 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3749 move_cq_head = 0;
3750 wq_tail = nesqp->hwqp.sq_tail;
3751 }
3c2d774c
GS		 3752 } else {
3753 /* Working on a RQ Completion*/
3c2d774c 3754 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
6eed5e7c
DW		 3755 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3756 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3c2d774c 3757 entry->opcode = IB_WC_RECV;
6eed5e7c
DW		 3758
3759 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3760 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3761 move_cq_head = 0;
3762 wq_tail = nesqp->hwqp.rq_tail;
3763 }
3c2d774c 3764 }
3c2d774c 3765
5ee21fe0 3766 entry->wr_id = wrid;
3c2d774c 3767 entry++;
5ee21fe0
DW		 3768 cqe_count++;
3769 }
3770
6eed5e7c
DW		 3771 if (move_cq_head) {
3772 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3773 if (++head >= cq_size)
3774 head = 0;
3775 nescq->polled_completions++;
5ee21fe0 3776
6eed5e7c
DW		 3777 if ((nescq->polled_completions > (cq_size / 2)) ||
3778 (nescq->polled_completions == 255)) {
3779 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
5ee21fe0
DW		 3780 " are pending %u of %u.\n",
3781 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
6eed5e7c 3782 nes_write32(nesdev->regs+NES_CQE_ALLOC,
5ee21fe0 3783 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
6eed5e7c
DW		 3784 nescq->polled_completions = 0;
3785 }
3786 } else {
3787 /* Update the wqe index and set status to flush */
3788 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3789 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3790 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3791 cpu_to_le32(wqe_index);
3792 move_cq_head = 1; /* ready for next pass */
5ee21fe0 3793 }
3c2d774c
GS		 3794 }
3795
3796 if (nescq->polled_completions) {
3797 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3798 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3799 nescq->polled_completions = 0;
3800 }
3801
3802 nescq->hw_cq.cq_head = head;
3803 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3804 cqe_count, nescq->hw_cq.cq_number);
3805
5880ff19 3806 spin_unlock_irqrestore(&nescq->lock, flags);
3c2d774c
GS		 3807
3808 return cqe_count;
3809}
3810
3811
3812/**
3813 * nes_req_notify_cq
3814 */
3815static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3816 {
3817 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3818 struct nes_device *nesdev = nesvnic->nesdev;
3819 struct nes_cq *nescq = to_nescq(ibcq);
3820 u32 cq_arm;
3821
3822 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3823 nescq->hw_cq.cq_number);
3824
3825 cq_arm = nescq->hw_cq.cq_number;
3826 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3827 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3828 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3829 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3830 else
3831 return -EINVAL;
3832
3833 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3834 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3835
3836 return 0;
3837}
3838
7738613e
IW		 3839static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3840 struct ib_port_immutable *immutable)
3841{
3842 struct ib_port_attr attr;
3843 int err;
3844
3845 err = nes_query_port(ibdev, port_num, &attr);
3846 if (err)
3847 return err;
3848
3849 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3850 immutable->gid_tbl_len = attr.gid_tbl_len;
f9b22e35 3851 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
7738613e
IW		 3852
3853 return 0;
3854}
3c2d774c
GS		 3855
3856/**
3857 * nes_init_ofa_device
3858 */
3859struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3860{
3861 struct nes_ib_device *nesibdev;
3862 struct nes_vnic *nesvnic = netdev_priv(netdev);
3863 struct nes_device *nesdev = nesvnic->nesdev;
3864
3865 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3866 if (nesibdev == NULL) {
3867 return NULL;
3868 }
3869 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3870 nesibdev->ibdev.owner = THIS_MODULE;
3871
3872 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3873 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3874 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3875
3876 nesibdev->ibdev.uverbs_cmd_mask =
3877 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3878 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3879 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3880 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3881 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3882 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3883 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3884 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3885 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3886 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3887 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3888 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3889 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3890 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3891 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3892 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3893 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3894 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3895 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3896 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3897 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3898 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3899
3900 nesibdev->ibdev.phys_port_cnt = 1;
3901 nesibdev->ibdev.num_comp_vectors = 1;
3902 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
f4e91eb4 3903 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3c2d774c
GS		 3904 nesibdev->ibdev.query_device = nes_query_device;
3905 nesibdev->ibdev.query_port = nes_query_port;
3c2d774c
GS		 3906 nesibdev->ibdev.query_pkey = nes_query_pkey;
3907 nesibdev->ibdev.query_gid = nes_query_gid;
3908 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3909 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3910 nesibdev->ibdev.mmap = nes_mmap;
3911 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3912 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3913 nesibdev->ibdev.create_ah = nes_create_ah;
3914 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3915 nesibdev->ibdev.create_qp = nes_create_qp;
3916 nesibdev->ibdev.modify_qp = nes_modify_qp;
3917 nesibdev->ibdev.query_qp = nes_query_qp;
3918 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3919 nesibdev->ibdev.create_cq = nes_create_cq;
3920 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3921 nesibdev->ibdev.poll_cq = nes_poll_cq;
3922 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3923 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr;
3924 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3925 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3926 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3927 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3928 nesibdev->ibdev.bind_mw = nes_bind_mw;
3929
e293a26f
CT		 3930 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr;
3931 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
3932 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
3c2d774c
GS		 3933
3934 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3935 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3936 nesibdev->ibdev.process_mad = nes_process_mad;
3937
3938 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3939 nesibdev->ibdev.post_send = nes_post_send;
3940 nesibdev->ibdev.post_recv = nes_post_recv;
3941
3942 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3943 if (nesibdev->ibdev.iwcm == NULL) {
3944 ib_dealloc_device(&nesibdev->ibdev);
3945 return NULL;
3946 }
3947 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3948 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3949 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3950 nesibdev->ibdev.iwcm->connect = nes_connect;
3951 nesibdev->ibdev.iwcm->accept = nes_accept;
3952 nesibdev->ibdev.iwcm->reject = nes_reject;
3953 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3954 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
7738613e 3955 nesibdev->ibdev.get_port_immutable = nes_port_immutable;
3c2d774c
GS		 3956
3957 return nesibdev;
3958}
3959
ea623455
MS		 3960
3961/**
3962 * nes_handle_delayed_event
3963 */
3964static void nes_handle_delayed_event(unsigned long data)
3965{
3966 struct nes_vnic *nesvnic = (void *) data;
3967
3968 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3969 struct ib_event event;
3970
3971 event.device = &nesvnic->nesibdev->ibdev;
3972 if (!event.device)
3973 goto stop_timer;
3974 event.event = nesvnic->delayed_event;
3975 event.element.port_num = nesvnic->logical_port + 1;
3976 ib_dispatch_event(&event);
3977 }
3978
3979stop_timer:
3980 nesvnic->event_timer.function = NULL;
3981}
3982
3983
cd6860eb
FL		 3984void nes_port_ibevent(struct nes_vnic *nesvnic)
3985{
3986 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3987 struct nes_device *nesdev = nesvnic->nesdev;
3988 struct ib_event event;
3989 event.device = &nesibdev->ibdev;
3990 event.element.port_num = nesvnic->logical_port + 1;
3991 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
ea623455
MS		 3992
3993 if (!nesvnic->event_timer.function) {
3994 ib_dispatch_event(&event);
3995 nesvnic->last_dispatched_event = event.event;
3996 nesvnic->event_timer.function = nes_handle_delayed_event;
3997 nesvnic->event_timer.data = (unsigned long) nesvnic;
3998 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3999 add_timer(&nesvnic->event_timer);
4000 } else {
4001 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
4002 }
4003 nesvnic->delayed_event = event.event;
cd6860eb
FL		 4004}
4005
3c2d774c
GS		 4006
4007/**
4008 * nes_destroy_ofa_device
4009 */
4010void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
4011{
4012 if (nesibdev == NULL)
4013 return;
4014
4015 nes_unregister_ofa_device(nesibdev);
4016
4017 kfree(nesibdev->ibdev.iwcm);
4018 ib_dealloc_device(&nesibdev->ibdev);
4019}
4020
4021
4022/**
4023 * nes_register_ofa_device
4024 */
4025int nes_register_ofa_device(struct nes_ib_device *nesibdev)
4026{
4027 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4028 struct nes_device *nesdev = nesvnic->nesdev;
4029 struct nes_adapter *nesadapter = nesdev->nesadapter;
4030 int i, ret;
4031
9a6edb60 4032 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3c2d774c
GS		 4033 if (ret) {
4034 return ret;
4035 }
4036
4037 /* Get the resources allocated to this device */
4038 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
4039 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
4040 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
4041 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
4042
f4e91eb4
TJ		 4043 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4044 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3c2d774c
GS		 4045 if (ret) {
4046 while (i > 0) {
4047 i--;
f4e91eb4
TJ		 4048 device_remove_file(&nesibdev->ibdev.dev,
4049 nes_dev_attributes[i]);
3c2d774c
GS		 4050 }
4051 ib_unregister_device(&nesibdev->ibdev);
4052 return ret;
4053 }
4054 }
4055
4056 nesvnic->of_device_registered = 1;
4057
4058 return 0;
4059}
4060
4061
4062/**
4063 * nes_unregister_ofa_device
4064 */
1a855fbf 4065static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3c2d774c
GS		 4066{
4067 struct nes_vnic *nesvnic = nesibdev->nesvnic;
4068 int i;
4069
f4e91eb4
TJ		 4070 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
4071 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3c2d774c
GS		 4072 }
4073
4074 if (nesvnic->of_device_registered) {
4075 ib_unregister_device(&nesibdev->ibdev);
4076 }
4077
4078 nesvnic->of_device_registered = 0;
4079}
Linux kernel - Deliverables
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