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IB: remove in-kernel support for memory windows
[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);
0ba24dd3 54static int nes_dereg_mr(struct ib_mr *ib_mr);
3c2d774c
GS		 55
56/**
57 * nes_alloc_mw
58 */
7083e42e
SM		 59static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type)
60{
3c2d774c
GS		 61 struct nes_pd *nespd = to_nespd(ibpd);
62 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
63 struct nes_device *nesdev = nesvnic->nesdev;
64 struct nes_adapter *nesadapter = nesdev->nesadapter;
65 struct nes_cqp_request *cqp_request;
66 struct nes_mr *nesmr;
67 struct ib_mw *ibmw;
68 struct nes_hw_cqp_wqe *cqp_wqe;
69 int ret;
70 u32 stag;
71 u32 stag_index = 0;
72 u32 next_stag_index = 0;
73 u32 driver_key = 0;
74 u8 stag_key = 0;
75
7083e42e
SM		 76 if (type != IB_MW_TYPE_1)
77 return ERR_PTR(-EINVAL);
78
3c2d774c
GS		 79 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
80 stag_key = (u8)next_stag_index;
81
82 driver_key = 0;
83
84 next_stag_index >>= 8;
85 next_stag_index %= nesadapter->max_mr;
86
87 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
81821644 88 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_MW);
3c2d774c
GS		 89 if (ret) {
90 return ERR_PTR(ret);
91 }
92
93 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
94 if (!nesmr) {
95 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
96 return ERR_PTR(-ENOMEM);
97 }
98
99 stag = stag_index << 8;
100 stag |= driver_key;
101 stag += (u32)stag_key;
102
103 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n",
104 stag, stag_index);
105
106 /* Register the region with the adapter */
107 cqp_request = nes_get_cqp_request(nesdev);
108 if (cqp_request == NULL) {
109 kfree(nesmr);
110 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
111 return ERR_PTR(-ENOMEM);
112 }
113
114 cqp_request->waiting = 1;
115 cqp_wqe = &cqp_request->cqp_wqe;
116
117 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] =
118 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ |
119 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO |
120 NES_CQP_STAG_REM_ACC_EN);
121
122 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
123 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff));
124 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
125
126 atomic_set(&cqp_request->refcount, 2);
8294f297 127 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 128
129 /* Wait for CQP */
130 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
131 NES_EVENT_TIMEOUT);
132 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
133 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
134 stag, ret, cqp_request->major_code, cqp_request->minor_code);
135 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 136 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 137 kfree(nesmr);
138 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
139 if (!ret) {
140 return ERR_PTR(-ETIME);
141 } else {
142 return ERR_PTR(-ENOMEM);
143 }
3c2d774c 144 }
1ff66e8c 145 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 146
147 nesmr->ibmw.rkey = stag;
148 nesmr->mode = IWNES_MEMREG_TYPE_MW;
149 ibmw = &nesmr->ibmw;
150 nesmr->pbl_4k = 0;
151 nesmr->pbls_used = 0;
152
153 return ibmw;
154}
155
156
157/**
158 * nes_dealloc_mw
159 */
160static int nes_dealloc_mw(struct ib_mw *ibmw)
161{
162 struct nes_mr *nesmr = to_nesmw(ibmw);
163 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device);
164 struct nes_device *nesdev = nesvnic->nesdev;
165 struct nes_adapter *nesadapter = nesdev->nesadapter;
166 struct nes_hw_cqp_wqe *cqp_wqe;
167 struct nes_cqp_request *cqp_request;
168 int err = 0;
3c2d774c
GS		 169 int ret;
170
171 /* Deallocate the window with the adapter */
172 cqp_request = nes_get_cqp_request(nesdev);
173 if (cqp_request == NULL) {
174 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
175 return -ENOMEM;
176 }
177 cqp_request->waiting = 1;
178 cqp_wqe = &cqp_request->cqp_wqe;
179 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
180 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG);
181 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey);
182
183 atomic_set(&cqp_request->refcount, 2);
8294f297 184 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 185
186 /* Wait for CQP */
187 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n",
188 ibmw->rkey);
189 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
190 NES_EVENT_TIMEOUT);
191 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u,"
192 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
193 ret, cqp_request->major_code, cqp_request->minor_code);
1ff66e8c
RD		 194 if (!ret)
195 err = -ETIME;
196 else if (cqp_request->major_code)
197 err = -EIO;
198
199 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 200
201 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
202 (ibmw->rkey & 0x0fffff00) >> 8);
203 kfree(nesmr);
204
205 return err;
206}
207
208
e293a26f
CT		 209/*
210 * nes_alloc_fast_mr
3c2d774c 211 */
e293a26f
CT		 212static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
213 u32 stag, u32 page_count)
3c2d774c 214{
3c2d774c 215 struct nes_hw_cqp_wqe *cqp_wqe;
e293a26f
CT		 216 struct nes_cqp_request *cqp_request;
217 unsigned long flags;
3c2d774c 218 int ret;
e293a26f 219 struct nes_adapter *nesadapter = nesdev->nesadapter;
3c2d774c 220 u32 opcode = 0;
e293a26f
CT		 221 u16 major_code;
222 u64 region_length = page_count * PAGE_SIZE;
3c2d774c 223
3c2d774c 224
3c2d774c
GS		 225 cqp_request = nes_get_cqp_request(nesdev);
226 if (cqp_request == NULL) {
227 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
e293a26f 228 return -ENOMEM;
3c2d774c 229 }
e293a26f
CT		 230 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, "
231 "region_length = %llu\n",
232 page_count, region_length);
3c2d774c
GS		 233 cqp_request->waiting = 1;
234 cqp_wqe = &cqp_request->cqp_wqe;
235
e293a26f
CT		 236 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
237 if (nesadapter->free_4kpbl > 0) {
238 nesadapter->free_4kpbl--;
239 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
240 } else {
241 /* No 4kpbl's available: */
242 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
243 nes_debug(NES_DBG_MR, "Out of Pbls\n");
244 nes_free_cqp_request(nesdev, cqp_request);
245 return -ENOMEM;
3c2d774c
GS		 246 }
247
e293a26f
CT		 248 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR |
249 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO |
250 NES_CQP_STAG_REM_ACC_EN;
251 /*
252 * The current OFED API does not support the zero based TO option.
253 * If added then need to changed the NES_CQP_STAG_VA* option. Also,
254 * the API does not support that ability to have the MR set for local
255 * access only when created and not allow the SQ op to override. Given
256 * this the remote enable must be set here.
257 */
3c2d774c
GS		 258
259 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
260 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
e293a26f 261 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1);
3c2d774c 262
e293a26f
CT		 263 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
264 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
265 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
266 cpu_to_le32(nespd->pd_id & 0x00007fff);
267
268 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
269 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0);
270 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0);
271 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0);
272 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8));
273 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
274 barrier();
3c2d774c
GS		 275
276 atomic_set(&cqp_request->refcount, 2);
8294f297 277 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 278
279 /* Wait for CQP */
e293a26f
CT		 280 ret = wait_event_timeout(cqp_request->waitq,
281 (0 != cqp_request->request_done),
282 NES_EVENT_TIMEOUT);
283
284 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, "
285 "wait_event_timeout ret = %u, CQP Major:Minor codes = "
286 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code,
287 cqp_request->minor_code);
288 major_code = cqp_request->major_code;
1ff66e8c 289 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c 290
e293a26f 291 if (!ret || major_code) {
35c6d694 292 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
e293a26f 293 nesadapter->free_4kpbl++;
35c6d694
CT		 294 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
295 }
296
e293a26f
CT		 297 if (!ret)
298 return -ETIME;
299 else if (major_code)
300 return -EIO;
301 return 0;
3c2d774c
GS		 302}
303
e293a26f 304/*
e02e4d55 305 * nes_alloc_mr
3c2d774c 306 */
e02e4d55
SG		 307static struct ib_mr *nes_alloc_mr(struct ib_pd *ibpd,
308 enum ib_mr_type mr_type,
309 u32 max_num_sg)
3c2d774c 310{
e293a26f
CT		 311 struct nes_pd *nespd = to_nespd(ibpd);
312 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
3c2d774c 313 struct nes_device *nesdev = nesvnic->nesdev;
35c6d694 314 struct nes_adapter *nesadapter = nesdev->nesadapter;
3c2d774c 315
e293a26f
CT		 316 u32 next_stag_index;
317 u8 stag_key = 0;
318 u32 driver_key = 0;
319 int err = 0;
320 u32 stag_index = 0;
321 struct nes_mr *nesmr;
322 u32 stag;
323 int ret;
324 struct ib_mr *ibmr;
e02e4d55
SG		 325
326 if (mr_type != IB_MR_TYPE_MEM_REG)
327 return ERR_PTR(-EINVAL);
328
329 if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
330 return ERR_PTR(-E2BIG);
331
e293a26f
CT		 332/*
333 * Note: Set to always use a fixed length single page entry PBL. This is to allow
334 * for the fast_reg_mr operation to always know the size of the PBL.
335 */
e02e4d55 336 if (max_num_sg > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
e293a26f 337 return ERR_PTR(-E2BIG);
35c6d694 338
e293a26f
CT		 339 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
340 stag_key = (u8)next_stag_index;
341 next_stag_index >>= 8;
342 next_stag_index %= nesadapter->max_mr;
dae5d13a 343
e293a26f
CT		 344 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
345 nesadapter->max_mr, &stag_index,
81821644 346 &next_stag_index, NES_RESOURCE_FAST_MR);
e293a26f
CT		 347 if (err)
348 return ERR_PTR(err);
349
350 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
351 if (!nesmr) {
352 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
353 return ERR_PTR(-ENOMEM);
35c6d694 354 }
3c2d774c 355
e293a26f
CT		 356 stag = stag_index << 8;
357 stag |= driver_key;
358 stag += (u32)stag_key;
3c2d774c 359
e293a26f
CT		 360 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
361 stag, stag_index);
3c2d774c 362
e02e4d55 363 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_num_sg);
e293a26f
CT		 364
365 if (ret == 0) {
366 nesmr->ibmr.rkey = stag;
367 nesmr->ibmr.lkey = stag;
368 nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
369 ibmr = &nesmr->ibmr;
370 } else {
371 kfree(nesmr);
372 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
0ba24dd3 373 return ERR_PTR(-ENOMEM);
e293a26f 374 }
0ba24dd3
SG		 375
376 nesmr->pages = pci_alloc_consistent(nesdev->pcidev,
377 max_num_sg * sizeof(u64),
378 &nesmr->paddr);
379 if (!nesmr->paddr)
380 goto err;
381
382 nesmr->max_pages = max_num_sg;
383
e293a26f 384 return ibmr;
0ba24dd3
SG		 385
386err:
387 nes_dereg_mr(ibmr);
388
389 return ERR_PTR(-ENOMEM);
390}
391
392static int nes_set_page(struct ib_mr *ibmr, u64 addr)
393{
394 struct nes_mr *nesmr = to_nesmr(ibmr);
395
396 if (unlikely(nesmr->npages == nesmr->max_pages))
397 return -ENOMEM;
398
399 nesmr->pages[nesmr->npages++] = cpu_to_le64(addr);
400
401 return 0;
402}
403
404static int nes_map_mr_sg(struct ib_mr *ibmr,
405 struct scatterlist *sg,
406 int sg_nents)
407{
408 struct nes_mr *nesmr = to_nesmr(ibmr);
409
410 nesmr->npages = 0;
411
412 return ib_sg_to_pages(ibmr, sg, sg_nents, nes_set_page);
e293a26f
CT		 413}
414
3c2d774c
GS		 415/**
416 * nes_query_device
417 */
2528e33e
MB		 418static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
419 struct ib_udata *uhw)
3c2d774c
GS		 420{
421 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
422 struct nes_device *nesdev = nesvnic->nesdev;
423 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
424
2528e33e
MB		 425 if (uhw->inlen || uhw->outlen)
426 return -EINVAL;
427
3c2d774c
GS		 428 memset(props, 0, sizeof(*props));
429 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6);
430
ff0380ce 431 props->fw_ver = nesdev->nesadapter->firmware_version;
3c2d774c
GS		 432 props->device_cap_flags = nesdev->nesadapter->device_cap_flags;
433 props->vendor_id = nesdev->nesadapter->vendor_id;
434 props->vendor_part_id = nesdev->nesadapter->vendor_part_id;
435 props->hw_ver = nesdev->nesadapter->hw_rev;
436 props->max_mr_size = 0x80000000;
437 props->max_qp = nesibdev->max_qp;
438 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2;
439 props->max_sge = nesdev->nesadapter->max_sge;
440 props->max_cq = nesibdev->max_cq;
5924aea6 441 props->max_cqe = nesdev->nesadapter->max_cqe;
3c2d774c
GS		 442 props->max_mr = nesibdev->max_mr;
443 props->max_mw = nesibdev->max_mr;
444 props->max_pd = nesibdev->max_pd;
445 props->max_sge_rd = 1;
446 switch (nesdev->nesadapter->max_irrq_wr) {
447 case 0:
8ac7f6e1 448 props->max_qp_rd_atom = 2;
3c2d774c
GS		 449 break;
450 case 1:
8ac7f6e1 451 props->max_qp_rd_atom = 8;
3c2d774c
GS		 452 break;
453 case 2:
8ac7f6e1 454 props->max_qp_rd_atom = 32;
3c2d774c
GS		 455 break;
456 case 3:
8ac7f6e1 457 props->max_qp_rd_atom = 64;
3c2d774c
GS		 458 break;
459 default:
460 props->max_qp_rd_atom = 0;
461 }
66388d67 462 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
3c2d774c
GS		 463 props->atomic_cap = IB_ATOMIC_NONE;
464 props->max_map_per_fmr = 1;
465
466 return 0;
467}
468
469
470/**
471 * nes_query_port
472 */
473static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
474{
cd1d3f7a
CT		 475 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
476 struct net_device *netdev = nesvnic->netdev;
477
3c2d774c
GS		 478 memset(props, 0, sizeof(*props));
479
cd1d3f7a
CT		 480 props->max_mtu = IB_MTU_4096;
481
482 if (netdev->mtu >= 4096)
483 props->active_mtu = IB_MTU_4096;
484 else if (netdev->mtu >= 2048)
485 props->active_mtu = IB_MTU_2048;
486 else if (netdev->mtu >= 1024)
487 props->active_mtu = IB_MTU_1024;
488 else if (netdev->mtu >= 512)
489 props->active_mtu = IB_MTU_512;
490 else
491 props->active_mtu = IB_MTU_256;
492
3c2d774c
GS		 493 props->lid = 1;
494 props->lmc = 0;
495 props->sm_lid = 0;
496 props->sm_sl = 0;
29327721
CT		 497 if (netif_queue_stopped(netdev))
498 props->state = IB_PORT_DOWN;
499 else if (nesvnic->linkup)
cd1d3f7a
CT		 500 props->state = IB_PORT_ACTIVE;
501 else
502 props->state = IB_PORT_DOWN;
3c2d774c
GS		 503 props->phys_state = 0;
504 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
505 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
506 props->gid_tbl_len = 1;
507 props->pkey_tbl_len = 1;
508 props->qkey_viol_cntr = 0;
509 props->active_width = IB_WIDTH_4X;
2e96691c 510 props->active_speed = IB_SPEED_SDR;
3c2d774c
GS		 511 props->max_msg_sz = 0x80000000;
512
513 return 0;
514}
515
3c2d774c
GS		 516/**
517 * nes_query_pkey
518 */
519static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
520{
521 *pkey = 0;
522 return 0;
523}
524
525
526/**
527 * nes_query_gid
528 */
529static int nes_query_gid(struct ib_device *ibdev, u8 port,
530 int index, union ib_gid *gid)
531{
532 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
533
534 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
535 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6);
536
537 return 0;
538}
539
540
541/**
542 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track
543 * of all objects associated with a particular user-mode client.
544 */
545static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
546 struct ib_udata *udata)
547{
548 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
549 struct nes_device *nesdev = nesvnic->nesdev;
550 struct nes_adapter *nesadapter = nesdev->nesadapter;
551 struct nes_alloc_ucontext_req req;
552 struct nes_alloc_ucontext_resp uresp;
553 struct nes_ucontext *nes_ucontext;
554 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
555
556
557 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) {
558 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n");
559 return ERR_PTR(-EINVAL);
560 }
561
562 if (req.userspace_ver != NES_ABI_USERSPACE_VER) {
563 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n",
564 req.userspace_ver, NES_ABI_USERSPACE_VER);
565 return ERR_PTR(-EINVAL);
566 }
567
568
569 memset(&uresp, 0, sizeof uresp);
570
571 uresp.max_qps = nesibdev->max_qp;
572 uresp.max_pds = nesibdev->max_pd;
573 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
574 uresp.virtwq = nesadapter->virtwq;
575 uresp.kernel_ver = NES_ABI_KERNEL_VER;
576
577 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL);
578 if (!nes_ucontext)
579 return ERR_PTR(-ENOMEM);
580
581 nes_ucontext->nesdev = nesdev;
582 nes_ucontext->mmap_wq_offset = uresp.max_pds;
583 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset +
584 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) /
585 PAGE_SIZE;
586
587
588 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
589 kfree(nes_ucontext);
590 return ERR_PTR(-EFAULT);
591 }
592
593 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
594 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
595 atomic_set(&nes_ucontext->usecnt, 1);
596 return &nes_ucontext->ibucontext;
597}
598
599
600/**
601 * nes_dealloc_ucontext
602 */
603static int nes_dealloc_ucontext(struct ib_ucontext *context)
604{
605 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
606 /* struct nes_device *nesdev = nesvnic->nesdev; */
607 struct nes_ucontext *nes_ucontext = to_nesucontext(context);
608
609 if (!atomic_dec_and_test(&nes_ucontext->usecnt))
610 return 0;
611 kfree(nes_ucontext);
612 return 0;
613}
614
615
616/**
617 * nes_mmap
618 */
619static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
620{
621 unsigned long index;
622 struct nes_vnic *nesvnic = to_nesvnic(context->device);
623 struct nes_device *nesdev = nesvnic->nesdev;
624 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */
625 struct nes_ucontext *nes_ucontext;
626 struct nes_qp *nesqp;
627
628 nes_ucontext = to_nesucontext(context);
629
630
631 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) {
632 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE;
633 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) +
634 PAGE_SIZE-1) & (~(PAGE_SIZE-1));
635 if (!test_bit(index, nes_ucontext->allocated_wqs)) {
636 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index);
637 return -EFAULT;
638 }
639 nesqp = nes_ucontext->mmap_nesqp[index];
640 if (nesqp == NULL) {
641 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index);
642 return -EFAULT;
643 }
644 if (remap_pfn_range(vma, vma->vm_start,
645 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT,
646 vma->vm_end - vma->vm_start,
647 vma->vm_page_prot)) {
648 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n");
649 return -EAGAIN;
650 }
651 vma->vm_private_data = nesqp;
652 return 0;
653 } else {
654 index = vma->vm_pgoff;
655 if (!test_bit(index, nes_ucontext->allocated_doorbells))
656 return -EFAULT;
657
658 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
659 if (io_remap_pfn_range(vma, vma->vm_start,
660 (nesdev->doorbell_start +
661 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096))
662 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot))
663 return -EAGAIN;
664 vma->vm_private_data = nes_ucontext;
665 return 0;
666 }
667
668 return -ENOSYS;
669}
670
671
672/**
673 * nes_alloc_pd
674 */
675static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
676 struct ib_ucontext *context, struct ib_udata *udata)
677{
678 struct nes_pd *nespd;
679 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
680 struct nes_device *nesdev = nesvnic->nesdev;
681 struct nes_adapter *nesadapter = nesdev->nesadapter;
682 struct nes_ucontext *nesucontext;
683 struct nes_alloc_pd_resp uresp;
684 u32 pd_num = 0;
685 int err;
686
687 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n",
688 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context,
29b4433d 689 netdev_refcnt_read(nesvnic->netdev));
3c2d774c
GS		 690
691 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
81821644 692 nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
3c2d774c
GS		 693 if (err) {
694 return ERR_PTR(err);
695 }
696
697 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
698 if (!nespd) {
699 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
700 return ERR_PTR(-ENOMEM);
701 }
702
703 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
704 nespd, nesvnic->nesibdev->ibdev.name);
705
706 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd;
707
708 if (context) {
709 nesucontext = to_nesucontext(context);
710 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells,
711 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db);
712 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n",
713 nespd->mmap_db_index, nespd->pd_id);
65b07ec2 714 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
3c2d774c
GS		 715 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
716 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
717 kfree(nespd);
718 return ERR_PTR(-ENOMEM);
719 }
720
721 uresp.pd_id = nespd->pd_id;
722 uresp.mmap_db_index = nespd->mmap_db_index;
723 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
724 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
725 kfree(nespd);
726 return ERR_PTR(-EFAULT);
727 }
728
729 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
730 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id;
731 nesucontext->first_free_db = nespd->mmap_db_index + 1;
732 }
733
734 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
735 return &nespd->ibpd;
736}
737
738
739/**
740 * nes_dealloc_pd
741 */
742static int nes_dealloc_pd(struct ib_pd *ibpd)
743{
744 struct nes_ucontext *nesucontext;
745 struct nes_pd *nespd = to_nespd(ibpd);
746 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
747 struct nes_device *nesdev = nesvnic->nesdev;
748 struct nes_adapter *nesadapter = nesdev->nesadapter;
749
750 if ((ibpd->uobject) && (ibpd->uobject->context)) {
751 nesucontext = to_nesucontext(ibpd->uobject->context);
752 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n",
753 nespd->mmap_db_index);
754 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
755 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0;
756 if (nesucontext->first_free_db > nespd->mmap_db_index) {
757 nesucontext->first_free_db = nespd->mmap_db_index;
758 }
759 }
760
761 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n",
762 nespd->pd_id, nespd);
763 nes_free_resource(nesadapter, nesadapter->allocated_pds,
764 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
765 kfree(nespd);
766
767 return 0;
768}
769
770
771/**
772 * nes_create_ah
773 */
774static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
775{
776 return ERR_PTR(-ENOSYS);
777}
778
779
780/**
781 * nes_destroy_ah
782 */
783static int nes_destroy_ah(struct ib_ah *ah)
784{
785 return -ENOSYS;
786}
787
788
789/**
790 * nes_get_encoded_size
791 */
792static inline u8 nes_get_encoded_size(int *size)
793{
794 u8 encoded_size = 0;
795 if (*size <= 32) {
796 *size = 32;
797 encoded_size = 1;
798 } else if (*size <= 128) {
799 *size = 128;
800 encoded_size = 2;
801 } else if (*size <= 512) {
802 *size = 512;
803 encoded_size = 3;
804 }
805 return (encoded_size);
806}
807
808
809
810/**
811 * nes_setup_virt_qp
812 */
813static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl,
814 struct nes_vnic *nesvnic, int sq_size, int rq_size)
815{
816 unsigned long flags;
817 void *mem;
818 __le64 *pbl = NULL;
819 __le64 *tpbl;
820 __le64 *pblbuffer;
821 struct nes_device *nesdev = nesvnic->nesdev;
822 struct nes_adapter *nesadapter = nesdev->nesadapter;
823 u32 pbl_entries;
824 u8 rq_pbl_entries;
825 u8 sq_pbl_entries;
826
827 pbl_entries = nespbl->pbl_size >> 3;
71e0957c 828 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n",
3c2d774c
GS		 829 nespbl->pbl_size, pbl_entries,
830 (void *)nespbl->pbl_vbase,
71e0957c 831 (unsigned long) nespbl->pbl_pbase);
3c2d774c
GS		 832 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */
833 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */
834 /* the first pbl to be fro the rq_vbase... */
835 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
836 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12;
837 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
838 if (!nespbl->page) {
839 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n");
840 kfree(nespbl);
841 return -ENOMEM;
842 }
843
844 nesqp->hwqp.sq_vbase = kmap(nespbl->page);
845 nesqp->page = nespbl->page;
846 if (!nesqp->hwqp.sq_vbase) {
847 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n");
848 kfree(nespbl);
849 return -ENOMEM;
850 }
851
852 /* Now to get to sq.. we need to calculate how many */
853 /* PBL entries were used by the rq.. */
854 pbl += sq_pbl_entries;
855 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32);
856 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */
857 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */
858
71e0957c
RD		 859 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n",
860 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase,
861 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase);
3c2d774c
GS		 862 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
863 if (!nesadapter->free_256pbl) {
864 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
865 nespbl->pbl_pbase);
866 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
867 kunmap(nesqp->page);
868 kfree(nespbl);
869 return -ENOMEM;
870 }
871 nesadapter->free_256pbl--;
872 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
873
874 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase);
875 pblbuffer = nesqp->pbl_vbase;
876 if (!nesqp->pbl_vbase) {
877 /* memory allocated during nes_reg_user_mr() */
878 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
879 nespbl->pbl_pbase);
880 kfree(nespbl);
881 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
882 nesadapter->free_256pbl++;
883 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
884 kunmap(nesqp->page);
885 return -ENOMEM;
886 }
887 memset(nesqp->pbl_vbase, 0, 256);
888 /* fill in the page address in the pbl buffer.. */
889 tpbl = pblbuffer + 16;
890 pbl = (__le64 *)nespbl->pbl_vbase;
891 while (sq_pbl_entries--)
892 *tpbl++ = *pbl++;
893 tpbl = pblbuffer;
894 while (rq_pbl_entries--)
895 *tpbl++ = *pbl++;
896
897 /* done with memory allocated during nes_reg_user_mr() */
898 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
899 nespbl->pbl_pbase);
900 kfree(nespbl);
901
902 nesqp->qp_mem_size =
903 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */
904 /* Round up to a multiple of a page */
905 nesqp->qp_mem_size += PAGE_SIZE - 1;
906 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
907
908 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
909 &nesqp->hwqp.q2_pbase);
910
911 if (!mem) {
912 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase);
913 nesqp->pbl_vbase = NULL;
914 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
915 nesadapter->free_256pbl++;
916 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
917 kunmap(nesqp->page);
918 return -ENOMEM;
919 }
d2fa9b26 920 nesqp->sq_kmapped = 1;
3c2d774c
GS		 921 nesqp->hwqp.q2_vbase = mem;
922 mem += 256;
923 memset(nesqp->hwqp.q2_vbase, 0, 256);
924 nesqp->nesqp_context = mem;
925 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
926 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
927
928 return 0;
929}
930
931
932/**
933 * nes_setup_mmap_qp
934 */
935static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic,
936 int sq_size, int rq_size)
937{
938 void *mem;
939 struct nes_device *nesdev = nesvnic->nesdev;
940
941 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) +
942 (sizeof(struct nes_hw_qp_wqe) * rq_size) +
943 max((u32)sizeof(struct nes_qp_context), ((u32)256)) +
944 256; /* this is Q2 */
945 /* Round up to a multiple of a page */
946 nesqp->qp_mem_size += PAGE_SIZE - 1;
947 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1);
948
949 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size,
950 &nesqp->hwqp.sq_pbase);
951 if (!mem)
952 return -ENOMEM;
953 nes_debug(NES_DBG_QP, "PCI consistent memory for "
954 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n",
955 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size);
956
957 memset(mem, 0, nesqp->qp_mem_size);
958
959 nesqp->hwqp.sq_vbase = mem;
960 mem += sizeof(struct nes_hw_qp_wqe) * sq_size;
961
962 nesqp->hwqp.rq_vbase = mem;
963 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase +
964 sizeof(struct nes_hw_qp_wqe) * sq_size;
965 mem += sizeof(struct nes_hw_qp_wqe) * rq_size;
966
967 nesqp->hwqp.q2_vbase = mem;
968 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase +
969 sizeof(struct nes_hw_qp_wqe) * rq_size;
970 mem += 256;
971 memset(nesqp->hwqp.q2_vbase, 0, 256);
972
973 nesqp->nesqp_context = mem;
974 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256;
975 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context));
976 return 0;
977}
978
979
980/**
981 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory.
982 */
983static inline void nes_free_qp_mem(struct nes_device *nesdev,
984 struct nes_qp *nesqp, int virt_wqs)
985{
986 unsigned long flags;
987 struct nes_adapter *nesadapter = nesdev->nesadapter;
988 if (!virt_wqs) {
989 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size,
990 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase);
991 }else {
992 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
993 nesadapter->free_256pbl++;
994 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
995 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase);
996 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase );
997 nesqp->pbl_vbase = NULL;
d2fa9b26
FL		 998 if (nesqp->sq_kmapped) {
999 nesqp->sq_kmapped = 0;
1000 kunmap(nesqp->page);
1001 }
3c2d774c
GS		 1002 }
1003}
1004
1005
1006/**
1007 * nes_create_qp
1008 */
1009static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
1010 struct ib_qp_init_attr *init_attr, struct ib_udata *udata)
1011{
1012 u64 u64temp= 0;
1013 u64 u64nesqp = 0;
1014 struct nes_pd *nespd = to_nespd(ibpd);
1015 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
1016 struct nes_device *nesdev = nesvnic->nesdev;
1017 struct nes_adapter *nesadapter = nesdev->nesadapter;
1018 struct nes_qp *nesqp;
1019 struct nes_cq *nescq;
1020 struct nes_ucontext *nes_ucontext;
1021 struct nes_hw_cqp_wqe *cqp_wqe;
1022 struct nes_cqp_request *cqp_request;
1023 struct nes_create_qp_req req;
1024 struct nes_create_qp_resp uresp;
1025 struct nes_pbl *nespbl = NULL;
1026 u32 qp_num = 0;
1027 u32 opcode = 0;
1028 /* u32 counter = 0; */
1029 void *mem;
1030 unsigned long flags;
1031 int ret;
1032 int err;
1033 int virt_wqs = 0;
1034 int sq_size;
1035 int rq_size;
1036 u8 sq_encoded_size;
1037 u8 rq_encoded_size;
1038 /* int counter; */
1039
b846f25a
EC		 1040 if (init_attr->create_flags)
1041 return ERR_PTR(-EINVAL);
1042
3c2d774c
GS		 1043 atomic_inc(&qps_created);
1044 switch (init_attr->qp_type) {
1045 case IB_QPT_RC:
1046 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
1047 init_attr->cap.max_inline_data = 0;
1048 } else {
1049 init_attr->cap.max_inline_data = 64;
1050 }
1051 sq_size = init_attr->cap.max_send_wr;
1052 rq_size = init_attr->cap.max_recv_wr;
1053
7495ab68 1054 /* check if the encoded sizes are OK or not... */
3c2d774c
GS		 1055 sq_encoded_size = nes_get_encoded_size(&sq_size);
1056 rq_encoded_size = nes_get_encoded_size(&rq_size);
1057
1058 if ((!sq_encoded_size) || (!rq_encoded_size)) {
1059 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n",
1060 rq_size, sq_size);
1061 return ERR_PTR(-EINVAL);
1062 }
1063
1064 init_attr->cap.max_send_wr = sq_size -2;
1065 init_attr->cap.max_recv_wr = rq_size -1;
1066 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size);
1067
1068 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps,
81821644 1069 nesadapter->max_qp, &qp_num, &nesadapter->next_qp, NES_RESOURCE_QP);
3c2d774c
GS		 1070 if (ret) {
1071 return ERR_PTR(ret);
1072 }
1073
1074 /* Need 512 (actually now 1024) byte alignment on this structure */
1075 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL);
1076 if (!mem) {
1077 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1078 nes_debug(NES_DBG_QP, "Unable to allocate QP\n");
1079 return ERR_PTR(-ENOMEM);
1080 }
1081 u64nesqp = (unsigned long)mem;
1082 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1083 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1;
1084 u64nesqp &= ~u64temp;
1085 nesqp = (struct nes_qp *)(unsigned long)u64nesqp;
1086 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n",
1087 nesqp, mem, NES_SW_CONTEXT_ALIGN); */
1088 nesqp->allocated_buffer = mem;
1089
1090 if (udata) {
1091 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) {
1092 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1093 kfree(nesqp->allocated_buffer);
1094 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n");
9d194d10 1095 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1096 }
1097 if (req.user_wqe_buffers) {
1098 virt_wqs = 1;
1099 }
43adff39
TN		 1100 if (req.user_qp_buffer)
1101 nesqp->nesuqp_addr = req.user_qp_buffer;
3c2d774c
GS		 1102 if ((ibpd->uobject) && (ibpd->uobject->context)) {
1103 nesqp->user_mode = 1;
1104 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1105 if (virt_wqs) {
1106 err = 1;
1107 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
1108 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) {
1109 list_del(&nespbl->list);
1110 err = 0;
1111 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n",
1112 nespbl, nespbl->user_base);
1113 break;
1114 }
1115 }
1116 if (err) {
1117 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n",
1118 (long long unsigned int)req.user_wqe_buffers);
1119 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1120 kfree(nesqp->allocated_buffer);
9300c0c0 1121 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1122 }
1123 }
1124
1125 nes_ucontext = to_nesucontext(ibpd->uobject->context);
1126 nesqp->mmap_sq_db_index =
1127 find_next_zero_bit(nes_ucontext->allocated_wqs,
1128 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
1129 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n",
1130 nespd->mmap_db_index); */
51af33e8 1131 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) {
3c2d774c
GS		 1132 nes_debug(NES_DBG_QP,
1133 "db index > max user regions, failing create QP\n");
1134 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1135 if (virt_wqs) {
1136 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1137 nespbl->pbl_pbase);
1138 kfree(nespbl);
1139 }
1140 kfree(nesqp->allocated_buffer);
1141 return ERR_PTR(-ENOMEM);
1142 }
1143 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1144 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp;
1145 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1;
1146 } else {
1147 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1148 kfree(nesqp->allocated_buffer);
1149 return ERR_PTR(-EFAULT);
1150 }
1151 }
1152 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) :
1153 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size);
1154 if (err) {
1155 nes_debug(NES_DBG_QP,
1156 "error geting qp mem code = %d\n", err);
1157 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1158 kfree(nesqp->allocated_buffer);
1159 return ERR_PTR(-ENOMEM);
1160 }
1161
1162 nesqp->hwqp.sq_size = sq_size;
1163 nesqp->hwqp.sq_encoded_size = sq_encoded_size;
1164 nesqp->hwqp.sq_head = 1;
1165 nesqp->hwqp.rq_size = rq_size;
1166 nesqp->hwqp.rq_encoded_size = rq_encoded_size;
1167 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n",
1168 (void *)nesqp->nesqp_context_pbase);
1169 */
1170 nesqp->hwqp.qp_id = qp_num;
1171 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id;
1172 nesqp->nespd = nespd;
1173
1174 nescq = to_nescq(init_attr->send_cq);
1175 nesqp->nesscq = nescq;
1176 nescq = to_nescq(init_attr->recv_cq);
1177 nesqp->nesrcq = nescq;
1178
1179 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) <<
1180 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT);
1181 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size <<
1182 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT);
1183 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size <<
1184 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT);
c12e56ef 1185 if (!udata) {
3c2d774c
GS		 1186 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN);
1187 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN);
c12e56ef 1188 }
3c2d774c
GS		 1189 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number +
1190 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16));
1191 u64temp = (u64)nesqp->hwqp.sq_pbase;
1192 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1193 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1194
1195
1196 if (!virt_wqs) {
1197 u64temp = (u64)nesqp->hwqp.sq_pbase;
1198 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp);
1199 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1200 u64temp = (u64)nesqp->hwqp.rq_pbase;
1201 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1202 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1203 } else {
1204 u64temp = (u64)nesqp->pbl_pbase;
1205 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp);
1206 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1207 }
1208
1209 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n",
1210 nesvnic->next_qp_nic_index,
1211 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */
1212 spin_lock_irqsave(&nesdev->cqp.lock, flags);
1213 nesqp->nesqp_context->misc2 |= cpu_to_le32(
1214 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] <<
1215 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT);
1216 nesvnic->next_qp_nic_index++;
1217 if ((nesvnic->next_qp_nic_index > 3) ||
1218 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) {
1219 nesvnic->next_qp_nic_index = 0;
1220 }
1221 spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
1222
1223 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16);
1224 u64temp = (u64)nesqp->hwqp.q2_pbase;
1225 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp);
1226 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32));
1227 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp)));
1228 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp))));
1229 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM |
883c6992 1230 NES_QPCONTEXT_ORDIRD_AAH |
3c2d774c
GS		 1231 ((((u32)nesadapter->max_irrq_wr) <<
1232 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK));
1233 if (disable_mpa_crc) {
1234 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n");
1235 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC);
1236 }
1237
1238
1239 /* Create the QP */
1240 cqp_request = nes_get_cqp_request(nesdev);
1241 if (cqp_request == NULL) {
1242 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n");
1243 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1244 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1245 kfree(nesqp->allocated_buffer);
1246 return ERR_PTR(-ENOMEM);
1247 }
1248 cqp_request->waiting = 1;
1249 cqp_wqe = &cqp_request->cqp_wqe;
1250
1251 if (!virt_wqs) {
1252 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP |
1253 NES_CQP_QP_IWARP_STATE_IDLE;
1254 } else {
1255 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS |
1256 NES_CQP_QP_IWARP_STATE_IDLE;
1257 }
1258 opcode |= NES_CQP_QP_CQS_VALID;
1259 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1260 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1261 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
1262
1263 u64temp = (u64)nesqp->nesqp_context_pbase;
1264 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
1265
1266 atomic_set(&cqp_request->refcount, 2);
8294f297 1267 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1268
1269 /* Wait for CQP */
1270 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n",
1271 nesqp->hwqp.qp_id);
1272 ret = wait_event_timeout(cqp_request->waitq,
1273 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT);
1274 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u,"
1275 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u,"
1276 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1277 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail,
1278 cqp_request->major_code, cqp_request->minor_code);
1279 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 1280 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1281 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1282 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1283 kfree(nesqp->allocated_buffer);
1284 if (!ret) {
1285 return ERR_PTR(-ETIME);
1286 } else {
1287 return ERR_PTR(-EIO);
1288 }
3c2d774c
GS		 1289 }
1290
1ff66e8c
RD		 1291 nes_put_cqp_request(nesdev, cqp_request);
1292
3c2d774c
GS		 1293 if (ibpd->uobject) {
1294 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index;
60429630 1295 uresp.mmap_rq_db_index = 0;
3c2d774c
GS		 1296 uresp.actual_sq_size = sq_size;
1297 uresp.actual_rq_size = rq_size;
1298 uresp.qp_id = nesqp->hwqp.qp_id;
1299 uresp.nes_drv_opt = nes_drv_opt;
1300 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) {
1301 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num);
1302 nes_free_qp_mem(nesdev, nesqp,virt_wqs);
1303 kfree(nesqp->allocated_buffer);
1304 return ERR_PTR(-EFAULT);
1305 }
1306 }
1307
1308 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n",
1309 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp));
1310 spin_lock_init(&nesqp->lock);
3c2d774c
GS		 1311 nes_add_ref(&nesqp->ibqp);
1312 break;
1313 default:
1314 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type);
1315 return ERR_PTR(-EINVAL);
3c2d774c
GS		 1316 }
1317
d14152da 1318 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR);
7bfcfa51
TN		 1319 init_timer(&nesqp->terminate_timer);
1320 nesqp->terminate_timer.function = nes_terminate_timeout;
1321 nesqp->terminate_timer.data = (unsigned long)nesqp;
d14152da 1322
3c2d774c
GS		 1323 /* update the QP table */
1324 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp;
1325 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n",
29b4433d 1326 netdev_refcnt_read(nesvnic->netdev));
3c2d774c
GS		 1327
1328 return &nesqp->ibqp;
1329}
1330
5ee21fe0
DW		 1331/**
1332 * nes_clean_cq
1333 */
1334static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq)
1335{
1336 u32 cq_head;
1337 u32 lo;
1338 u32 hi;
1339 u64 u64temp;
1340 unsigned long flags = 0;
1341
1342 spin_lock_irqsave(&nescq->lock, flags);
1343
1344 cq_head = nescq->hw_cq.cq_head;
1345 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) {
1346 rmb();
1347 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
1348 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]);
1349 u64temp = (((u64)hi) << 32) | ((u64)lo);
1350 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1);
1351 if (u64temp == (u64)(unsigned long)nesqp) {
1352 /* Zero the context value so cqe will be ignored */
1353 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0;
1354 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0;
1355 }
1356
1357 if (++cq_head >= nescq->hw_cq.cq_size)
1358 cq_head = 0;
1359 }
1360
1361 spin_unlock_irqrestore(&nescq->lock, flags);
1362}
1363
1364
3c2d774c
GS		 1365/**
1366 * nes_destroy_qp
1367 */
1368static int nes_destroy_qp(struct ib_qp *ibqp)
1369{
1370 struct nes_qp *nesqp = to_nesqp(ibqp);
3c2d774c
GS		 1371 struct nes_ucontext *nes_ucontext;
1372 struct ib_qp_attr attr;
1373 struct iw_cm_id *cm_id;
1374 struct iw_cm_event cm_event;
0f0bee8b 1375 int ret = 0;
3c2d774c
GS		 1376
1377 atomic_inc(&sw_qps_destroyed);
1378 nesqp->destroyed = 1;
1379
1380 /* Blow away the connection if it exists. */
1381 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) {
1382 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */
1383 attr.qp_state = IB_QPS_ERR;
1384 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL);
1385 }
1386
1387 if (((nesqp->ibqp_state == IB_QPS_INIT) ||
1388 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) {
1389 cm_id = nesqp->cm_id;
1390 cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
d0c49bf3 1391 cm_event.status = -ETIMEDOUT;
3c2d774c
GS		 1392 cm_event.local_addr = cm_id->local_addr;
1393 cm_event.remote_addr = cm_id->remote_addr;
1394 cm_event.private_data = NULL;
1395 cm_event.private_data_len = 0;
1396
1397 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for "
1398 "QP%u. cm_id = %p, refcount = %u. \n",
1399 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount));
1400
1401 cm_id->rem_ref(cm_id);
1402 ret = cm_id->event_handler(cm_id, &cm_event);
1403 if (ret)
1404 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret);
1405 }
1406
3c2d774c
GS		 1407 if (nesqp->user_mode) {
1408 if ((ibqp->uobject)&&(ibqp->uobject->context)) {
1409 nes_ucontext = to_nesucontext(ibqp->uobject->context);
1410 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs);
1411 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL;
1412 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) {
1413 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index;
1414 }
1415 }
d2fa9b26
FL		 1416 if (nesqp->pbl_pbase && nesqp->sq_kmapped) {
1417 nesqp->sq_kmapped = 0;
3c2d774c 1418 kunmap(nesqp->page);
d2fa9b26 1419 }
5ee21fe0
DW		 1420 } else {
1421 /* Clean any pending completions from the cq(s) */
1422 if (nesqp->nesscq)
1423 nes_clean_cq(nesqp, nesqp->nesscq);
1424
1425 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq))
1426 nes_clean_cq(nesqp, nesqp->nesrcq);
3c2d774c 1427 }
3c2d774c
GS		 1428 nes_rem_ref(&nesqp->ibqp);
1429 return 0;
1430}
1431
1432
1433/**
1434 * nes_create_cq
1435 */
bcf4c1ea
MB		 1436static struct ib_cq *nes_create_cq(struct ib_device *ibdev,
1437 const struct ib_cq_init_attr *attr,
1438 struct ib_ucontext *context,
1439 struct ib_udata *udata)
3c2d774c 1440{
bcf4c1ea 1441 int entries = attr->cqe;
3c2d774c
GS		 1442 u64 u64temp;
1443 struct nes_vnic *nesvnic = to_nesvnic(ibdev);
1444 struct nes_device *nesdev = nesvnic->nesdev;
1445 struct nes_adapter *nesadapter = nesdev->nesadapter;
1446 struct nes_cq *nescq;
1447 struct nes_ucontext *nes_ucontext = NULL;
1448 struct nes_cqp_request *cqp_request;
1449 void *mem = NULL;
1450 struct nes_hw_cqp_wqe *cqp_wqe;
1451 struct nes_pbl *nespbl = NULL;
1452 struct nes_create_cq_req req;
1453 struct nes_create_cq_resp resp;
1454 u32 cq_num = 0;
1455 u32 opcode = 0;
1456 u32 pbl_entries = 1;
1457 int err;
1458 unsigned long flags;
1459 int ret;
1460
bcf4c1ea
MB		 1461 if (attr->flags)
1462 return ERR_PTR(-EINVAL);
1463
5924aea6
CT		 1464 if (entries > nesadapter->max_cqe)
1465 return ERR_PTR(-EINVAL);
1466
3c2d774c 1467 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs,
81821644 1468 nesadapter->max_cq, &cq_num, &nesadapter->next_cq, NES_RESOURCE_CQ);
3c2d774c
GS		 1469 if (err) {
1470 return ERR_PTR(err);
1471 }
1472
1473 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL);
1474 if (!nescq) {
1475 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1476 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n");
1477 return ERR_PTR(-ENOMEM);
1478 }
1479
1480 nescq->hw_cq.cq_size = max(entries + 1, 5);
1481 nescq->hw_cq.cq_number = cq_num;
1482 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1;
1483
1484
1485 if (context) {
1486 nes_ucontext = to_nesucontext(context);
1487 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) {
1488 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1489 kfree(nescq);
1490 return ERR_PTR(-EFAULT);
1491 }
1492 nesvnic->mcrq_ucontext = nes_ucontext;
1493 nes_ucontext->mcrqf = req.mcrqf;
1494 if (nes_ucontext->mcrqf) {
1495 if (nes_ucontext->mcrqf & 0x80000000)
2e369544 1496 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1);
3c2d774c
GS		 1497 else if (nes_ucontext->mcrqf & 0x40000000)
1498 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff;
1499 else
1500 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1;
5d1af5c8 1501 nescq->mcrqf = nes_ucontext->mcrqf;
3c2d774c
GS		 1502 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1503 }
1504 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n",
1505 (unsigned long)req.user_cq_buffer, entries);
9300c0c0 1506 err = 1;
3c2d774c
GS		 1507 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) {
1508 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) {
1509 list_del(&nespbl->list);
1510 err = 0;
1511 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n",
1512 nespbl);
1513 break;
1514 }
1515 }
1516 if (err) {
1517 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1518 kfree(nescq);
9300c0c0 1519 return ERR_PTR(-EFAULT);
3c2d774c
GS		 1520 }
1521
1522 pbl_entries = nespbl->pbl_size >> 3;
1523 nescq->cq_mem_size = 0;
1524 } else {
1525 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe);
1526 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n",
1527 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number);
1528
1529 /* allocate the physical buffer space */
9011a67b
JP		 1530 mem = pci_zalloc_consistent(nesdev->pcidev, nescq->cq_mem_size,
1531 &nescq->hw_cq.cq_pbase);
3c2d774c
GS		 1532 if (!mem) {
1533 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n");
1534 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1535 kfree(nescq);
1536 return ERR_PTR(-ENOMEM);
1537 }
1538
3c2d774c
GS		 1539 nescq->hw_cq.cq_vbase = mem;
1540 nescq->hw_cq.cq_head = 0;
1541 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n",
1542 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase,
1543 (u32)nescq->hw_cq.cq_pbase);
1544 }
1545
1546 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler;
1547 spin_lock_init(&nescq->lock);
1548
1549 /* send CreateCQ request to CQP */
1550 cqp_request = nes_get_cqp_request(nesdev);
1551 if (cqp_request == NULL) {
1552 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1553 if (!context)
1554 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1555 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1556 else {
1557 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1558 nespbl->pbl_vbase, nespbl->pbl_pbase);
1559 kfree(nespbl);
1560 }
1561
3c2d774c
GS		 1562 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1563 kfree(nescq);
1564 return ERR_PTR(-ENOMEM);
1565 }
1566 cqp_request->waiting = 1;
1567 cqp_wqe = &cqp_request->cqp_wqe;
1568
1569 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
1570 NES_CQP_CQ_CHK_OVERFLOW |
1571 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16);
1572
1573 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1574
1575 if (pbl_entries != 1) {
1576 if (pbl_entries > 32) {
1577 /* use 4k pbl */
1578 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries);
1579 if (nesadapter->free_4kpbl == 0) {
c5d321e5
FL		 1580 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1581 nes_free_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1582 if (!context)
1583 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1584 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1585 else {
1586 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1587 nespbl->pbl_vbase, nespbl->pbl_pbase);
1588 kfree(nespbl);
1589 }
3c2d774c
GS		 1590 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1591 kfree(nescq);
1592 return ERR_PTR(-ENOMEM);
1593 } else {
1594 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK);
1595 nescq->virtual_cq = 2;
1596 nesadapter->free_4kpbl--;
1597 }
1598 } else {
1599 /* use 256 byte pbl */
1600 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries);
1601 if (nesadapter->free_256pbl == 0) {
c5d321e5
FL		 1602 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1603 nes_free_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1604 if (!context)
1605 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1606 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1607 else {
1608 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1609 nespbl->pbl_vbase, nespbl->pbl_pbase);
1610 kfree(nespbl);
1611 }
3c2d774c
GS		 1612 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1613 kfree(nescq);
1614 return ERR_PTR(-ENOMEM);
1615 } else {
1616 opcode |= NES_CQP_CQ_VIRT;
1617 nescq->virtual_cq = 1;
1618 nesadapter->free_256pbl--;
1619 }
1620 }
1621 }
1622
1623 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1624
1625 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1626 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1627 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1628 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16)));
1629
1630 if (context) {
1631 if (pbl_entries != 1)
1632 u64temp = (u64)nespbl->pbl_pbase;
1633 else
1634 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]);
1635 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX,
1636 nes_ucontext->mmap_db_index[0]);
1637 } else {
1638 u64temp = (u64)nescq->hw_cq.cq_pbase;
1639 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
1640 }
1641 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
1642 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
1643 u64temp = (u64)(unsigned long)&nescq->hw_cq;
1644 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
1645 cpu_to_le32((u32)(u64temp >> 1));
1646 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
1647 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
1648
1649 atomic_set(&cqp_request->refcount, 2);
8294f297 1650 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1651
1652 /* Wait for CQP */
1653 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n",
1654 nescq->hw_cq.cq_number);
1655 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1656 NES_EVENT_TIMEOUT * 2);
1657 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n",
1658 nescq->hw_cq.cq_number, ret);
1659 if ((!ret) || (cqp_request->major_code)) {
1ff66e8c 1660 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1661 if (!context)
1662 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem,
1663 nescq->hw_cq.cq_pbase);
5d1af5c8
MW		 1664 else {
1665 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size,
1666 nespbl->pbl_vbase, nespbl->pbl_pbase);
1667 kfree(nespbl);
1668 }
3c2d774c
GS		 1669 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1670 kfree(nescq);
1671 return ERR_PTR(-EIO);
3c2d774c 1672 }
1ff66e8c 1673 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1674
1675 if (context) {
1676 /* free the nespbl */
1677 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase,
1678 nespbl->pbl_pbase);
1679 kfree(nespbl);
1680 resp.cq_id = nescq->hw_cq.cq_number;
1681 resp.cq_size = nescq->hw_cq.cq_size;
1682 resp.mmap_db_index = 0;
60429630 1683 if (ib_copy_to_udata(udata, &resp, sizeof resp - sizeof resp.reserved)) {
3c2d774c
GS		 1684 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num);
1685 kfree(nescq);
1686 return ERR_PTR(-EFAULT);
1687 }
1688 }
1689
1690 return &nescq->ibcq;
1691}
1692
1693
1694/**
1695 * nes_destroy_cq
1696 */
1697static int nes_destroy_cq(struct ib_cq *ib_cq)
1698{
1699 struct nes_cq *nescq;
1700 struct nes_device *nesdev;
1701 struct nes_vnic *nesvnic;
1702 struct nes_adapter *nesadapter;
1703 struct nes_hw_cqp_wqe *cqp_wqe;
1704 struct nes_cqp_request *cqp_request;
1705 unsigned long flags;
1706 u32 opcode = 0;
1707 int ret;
1708
1709 if (ib_cq == NULL)
1710 return 0;
1711
1712 nescq = to_nescq(ib_cq);
1713 nesvnic = to_nesvnic(ib_cq->device);
1714 nesdev = nesvnic->nesdev;
1715 nesadapter = nesdev->nesadapter;
1716
1717 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number);
1718
1719 /* Send DestroyCQ request to CQP */
1720 cqp_request = nes_get_cqp_request(nesdev);
1721 if (cqp_request == NULL) {
1722 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n");
1723 return -ENOMEM;
1724 }
1725 cqp_request->waiting = 1;
1726 cqp_wqe = &cqp_request->cqp_wqe;
1727 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16);
1728 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1729 if (nescq->virtual_cq == 1) {
1730 nesadapter->free_256pbl++;
1731 if (nesadapter->free_256pbl > nesadapter->max_256pbl) {
1732 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n",
33718363 1733 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl);
3c2d774c
GS		 1734 }
1735 } else if (nescq->virtual_cq == 2) {
1736 nesadapter->free_4kpbl++;
1737 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) {
1738 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n",
33718363 1739 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl);
3c2d774c
GS		 1740 }
1741 opcode |= NES_CQP_CQ_4KB_CHUNK;
1742 }
1743
1744 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1745
1746 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1747 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1748 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
1749 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16)));
5d1af5c8
MW		 1750 if (!nescq->mcrqf)
1751 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number);
1752
3c2d774c 1753 atomic_set(&cqp_request->refcount, 2);
8294f297 1754 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1755
1756 /* Wait for CQP */
1757 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n",
1758 nescq->hw_cq.cq_number);
1759 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1760 NES_EVENT_TIMEOUT);
1761 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u,"
1762 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1763 nescq->hw_cq.cq_number, ret, cqp_request->major_code,
1764 cqp_request->minor_code);
1ff66e8c
RD		 1765 if (!ret) {
1766 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n",
3c2d774c 1767 nescq->hw_cq.cq_number);
1ff66e8c
RD		 1768 ret = -ETIME;
1769 } else if (cqp_request->major_code) {
1770 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n",
3c2d774c 1771 nescq->hw_cq.cq_number);
1ff66e8c 1772 ret = -EIO;
3c2d774c
GS		 1773 } else {
1774 ret = 0;
3c2d774c 1775 }
1ff66e8c 1776 nes_put_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1777
1778 if (nescq->cq_mem_size)
1779 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size,
31d1e340 1780 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase);
3c2d774c
GS		 1781 kfree(nescq);
1782
1783 return ret;
1784}
1785
0145f341
DW		 1786/**
1787 * root_256
1788 */
1789static u32 root_256(struct nes_device *nesdev,
1790 struct nes_root_vpbl *root_vpbl,
1791 struct nes_root_vpbl *new_root,
cc005fa2 1792 u16 pbl_count_4k)
0145f341
DW		 1793{
1794 u64 leaf_pbl;
1795 int i, j, k;
1796
1797 if (pbl_count_4k == 1) {
1798 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
1799 512, &new_root->pbl_pbase);
1800
1801 if (new_root->pbl_vbase == NULL)
1802 return 0;
1803
1804 leaf_pbl = (u64)root_vpbl->pbl_pbase;
1805 for (i = 0; i < 16; i++) {
1806 new_root->pbl_vbase[i].pa_low =
1807 cpu_to_le32((u32)leaf_pbl);
1808 new_root->pbl_vbase[i].pa_high =
1809 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1810 leaf_pbl += 256;
1811 }
1812 } else {
1813 for (i = 3; i >= 0; i--) {
1814 j = i * 16;
1815 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i];
1816 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) +
1817 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high))
1818 << 32);
1819 for (k = 1; k < 16; k++) {
1820 leaf_pbl += 256;
1821 root_vpbl->pbl_vbase[j + k].pa_low =
1822 cpu_to_le32((u32)leaf_pbl);
1823 root_vpbl->pbl_vbase[j + k].pa_high =
1824 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32)));
1825 }
1826 }
1827 }
1828
1829 return 1;
1830}
1831
3c2d774c
GS		 1832
1833/**
1834 * nes_reg_mr
1835 */
1836static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd,
1837 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl,
0145f341
DW		 1838 dma_addr_t single_buffer, u16 pbl_count_4k,
1839 u16 residual_page_count_4k, int acc, u64 *iova_start,
1840 u16 *actual_pbl_cnt, u8 *used_4k_pbls)
3c2d774c
GS		 1841{
1842 struct nes_hw_cqp_wqe *cqp_wqe;
1843 struct nes_cqp_request *cqp_request;
1844 unsigned long flags;
1845 int ret;
1846 struct nes_adapter *nesadapter = nesdev->nesadapter;
0145f341 1847 uint pg_cnt = 0;
1af9222b 1848 u16 pbl_count_256 = 0;
0145f341
DW		 1849 u16 pbl_count = 0;
1850 u8 use_256_pbls = 0;
1851 u8 use_4k_pbls = 0;
1852 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0;
812d8672 1853 struct nes_root_vpbl new_root = { 0, NULL, NULL };
3c2d774c
GS		 1854 u32 opcode = 0;
1855 u16 major_code;
1856
1857 /* Register the region with the adapter */
1858 cqp_request = nes_get_cqp_request(nesdev);
1859 if (cqp_request == NULL) {
1860 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
1861 return -ENOMEM;
1862 }
1863 cqp_request->waiting = 1;
1864 cqp_wqe = &cqp_request->cqp_wqe;
1865
0145f341
DW		 1866 if (pbl_count_4k) {
1867 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1868
1869 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k;
1870 pbl_count_256 = (pg_cnt + 31) / 32;
1871 if (pg_cnt <= 32) {
1872 if (pbl_count_256 <= nesadapter->free_256pbl)
1873 use_256_pbls = 1;
1874 else if (pbl_count_4k <= nesadapter->free_4kpbl)
1875 use_4k_pbls = 1;
1876 } else if (pg_cnt <= 2048) {
1877 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) &&
1878 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) {
1879 use_4k_pbls = 1;
1880 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) {
1881 use_256_pbls = 1;
1882 use_two_level = 1;
1883 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1884 use_4k_pbls = 1;
3c2d774c
GS		 1885 }
1886 } else {
0145f341
DW		 1887 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl)
1888 use_4k_pbls = 1;
3c2d774c 1889 }
0145f341
DW		 1890
1891 if (use_256_pbls) {
1892 pbl_count = pbl_count_256;
1893 nesadapter->free_256pbl -= pbl_count + use_two_level;
1894 } else if (use_4k_pbls) {
1895 pbl_count = pbl_count_4k;
1896 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1897 } else {
1898 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1899 nes_debug(NES_DBG_MR, "Out of Pbls\n");
1900 nes_free_cqp_request(nesdev, cqp_request);
1901 return -ENOMEM;
1902 }
1903
1904 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
3c2d774c
GS		 1905 }
1906
0145f341 1907 if (use_256_pbls && use_two_level) {
cc005fa2 1908 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) {
0145f341
DW		 1909 if (new_root.pbl_pbase != 0)
1910 root_vpbl = &new_root;
1911 } else {
1912 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
1913 nesadapter->free_256pbl += pbl_count_256 + use_two_level;
1914 use_256_pbls = 0;
1915
1916 if (pbl_count_4k == 1)
1917 use_two_level = 0;
1918 pbl_count = pbl_count_4k;
1919
1920 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) {
1921 nesadapter->free_4kpbl -= pbl_count + use_two_level;
1922 use_4k_pbls = 1;
1923 }
1924 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1925
1926 if (use_4k_pbls == 0)
1927 return -ENOMEM;
1928 }
1929 }
3c2d774c
GS		 1930
1931 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ |
1932 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR;
1933 if (acc & IB_ACCESS_LOCAL_WRITE)
1934 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE;
1935 if (acc & IB_ACCESS_REMOTE_WRITE)
1936 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN;
1937 if (acc & IB_ACCESS_REMOTE_READ)
1938 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN;
1939 if (acc & IB_ACCESS_MW_BIND)
1940 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN;
1941
1942 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
1943 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode);
1944 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start);
1945 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length);
1946
1947 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] =
1948 cpu_to_le32((u32)(region_length >> 8) & 0xff000000);
1949 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |=
1950 cpu_to_le32(nespd->pd_id & 0x00007fff);
1951 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag);
1952
1953 if (pbl_count == 0) {
1954 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer);
1955 } else {
1956 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase);
1957 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count);
0145f341 1958 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8));
3c2d774c 1959
0145f341 1960 if (use_4k_pbls)
3c2d774c
GS		 1961 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE);
1962 }
1963 barrier();
1964
1965 atomic_set(&cqp_request->refcount, 2);
8294f297 1966 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 1967
1968 /* Wait for CQP */
1969 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done),
1970 NES_EVENT_TIMEOUT);
1971 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u,"
1972 " CQP Major:Minor codes = 0x%04X:0x%04X.\n",
1973 stag, ret, cqp_request->major_code, cqp_request->minor_code);
1974 major_code = cqp_request->major_code;
1ff66e8c
RD		 1975 nes_put_cqp_request(nesdev, cqp_request);
1976
dae5d13a
DW		 1977 if ((!ret || major_code) && pbl_count != 0) {
1978 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
0145f341
DW		 1979 if (use_256_pbls)
1980 nesadapter->free_256pbl += pbl_count + use_two_level;
1981 else if (use_4k_pbls)
1982 nesadapter->free_4kpbl += pbl_count + use_two_level;
dae5d13a
DW		 1983 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
1984 }
0145f341
DW		 1985 if (new_root.pbl_pbase)
1986 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase,
1987 new_root.pbl_pbase);
1988
3c2d774c
GS		 1989 if (!ret)
1990 return -ETIME;
1991 else if (major_code)
1992 return -EIO;
3c2d774c 1993
0145f341
DW		 1994 *actual_pbl_cnt = pbl_count + use_two_level;
1995 *used_4k_pbls = use_4k_pbls;
3c2d774c
GS		 1996 return 0;
1997}
1998
1999
2000/**
2001 * nes_reg_phys_mr
2002 */
b7d3e0a9 2003struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd,
3c2d774c
GS		 2004 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc,
2005 u64 * iova_start)
2006{
2007 u64 region_length;
2008 struct nes_pd *nespd = to_nespd(ib_pd);
2009 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device);
2010 struct nes_device *nesdev = nesvnic->nesdev;
2011 struct nes_adapter *nesadapter = nesdev->nesadapter;
2012 struct nes_mr *nesmr;
2013 struct ib_mr *ibmr;
2014 struct nes_vpbl vpbl;
2015 struct nes_root_vpbl root_vpbl;
2016 u32 stag;
2017 u32 i;
3f32eb11 2018 unsigned long mask;
3c2d774c
GS		 2019 u32 stag_index = 0;
2020 u32 next_stag_index = 0;
2021 u32 driver_key = 0;
2022 u32 root_pbl_index = 0;
2023 u32 cur_pbl_index = 0;
69d51023 2024 int err = 0;
3c2d774c
GS		 2025 int ret = 0;
2026 u16 pbl_count = 0;
2027 u8 single_page = 1;
2028 u8 stag_key = 0;
2029
3c2d774c
GS		 2030 region_length = 0;
2031 vpbl.pbl_vbase = NULL;
2032 root_vpbl.pbl_vbase = NULL;
2033 root_vpbl.pbl_pbase = 0;
2034
2035 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2036 stag_key = (u8)next_stag_index;
2037
2038 driver_key = 0;
2039
2040 next_stag_index >>= 8;
2041 next_stag_index %= nesadapter->max_mr;
2042 if (num_phys_buf > (1024*512)) {
2043 return ERR_PTR(-E2BIG);
2044 }
2045
3f32eb11
DW		 2046 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK)
2047 return ERR_PTR(-EINVAL);
2048
3c2d774c 2049 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr,
81821644 2050 &stag_index, &next_stag_index, NES_RESOURCE_PHYS_MR);
3c2d774c
GS		 2051 if (err) {
2052 return ERR_PTR(err);
2053 }
2054
2055 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2056 if (!nesmr) {
2057 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2058 return ERR_PTR(-ENOMEM);
2059 }
2060
2061 for (i = 0; i < num_phys_buf; i++) {
2062
2063 if ((i & 0x01FF) == 0) {
2064 if (root_pbl_index == 1) {
2065 /* Allocate the root PBL */
2066 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192,
2067 &root_vpbl.pbl_pbase);
2068 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2069 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2070 if (!root_vpbl.pbl_vbase) {
2071 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2072 vpbl.pbl_pbase);
2073 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2074 kfree(nesmr);
2075 return ERR_PTR(-ENOMEM);
2076 }
2077 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL);
2078 if (!root_vpbl.leaf_vpbl) {
2079 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2080 root_vpbl.pbl_pbase);
2081 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2082 vpbl.pbl_pbase);
2083 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2084 kfree(nesmr);
2085 return ERR_PTR(-ENOMEM);
2086 }
2087 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase);
2088 root_vpbl.pbl_vbase[0].pa_high =
2089 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2090 root_vpbl.leaf_vpbl[0] = vpbl;
2091 }
2092 /* Allocate a 4K buffer for the PBL */
2093 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2094 &vpbl.pbl_pbase);
2095 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n",
2096 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase);
2097 if (!vpbl.pbl_vbase) {
2098 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2099 ibmr = ERR_PTR(-ENOMEM);
2100 kfree(nesmr);
2101 goto reg_phys_err;
2102 }
2103 /* Fill in the root table */
2104 if (1 <= root_pbl_index) {
2105 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2106 cpu_to_le32((u32)vpbl.pbl_pbase);
2107 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2108 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2109 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2110 }
2111 root_pbl_index++;
2112 cur_pbl_index = 0;
2113 }
3c2d774c 2114
3f32eb11
DW		 2115 mask = !buffer_list[i].size;
2116 if (i != 0)
2117 mask |= buffer_list[i].addr;
2118 if (i != num_phys_buf - 1)
2119 mask |= buffer_list[i].addr + buffer_list[i].size;
2120
2121 if (mask & ~PAGE_MASK) {
3c2d774c 2122 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
3f32eb11 2123 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n");
3c2d774c
GS		 2124 ibmr = ERR_PTR(-EINVAL);
2125 kfree(nesmr);
2126 goto reg_phys_err;
2127 }
2128
2129 region_length += buffer_list[i].size;
2130 if ((i != 0) && (single_page)) {
2131 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr)
2132 single_page = 0;
2133 }
3f32eb11 2134 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK);
3c2d774c
GS		 2135 vpbl.pbl_vbase[cur_pbl_index++].pa_high =
2136 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32)));
2137 }
2138
2139 stag = stag_index << 8;
2140 stag |= driver_key;
2141 stag += (u32)stag_key;
2142
2143 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX,"
2144 " length = 0x%016lX, index = 0x%08X\n",
2145 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index);
2146
3c2d774c
GS		 2147 /* Make the leaf PBL the root if only one PBL */
2148 if (root_pbl_index == 1) {
2149 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2150 }
2151
2152 if (single_page) {
2153 pbl_count = 0;
2154 } else {
2155 pbl_count = root_pbl_index;
2156 }
2157 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl,
0145f341
DW		 2158 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start,
2159 &nesmr->pbls_used, &nesmr->pbl_4k);
3c2d774c
GS		 2160
2161 if (ret == 0) {
2162 nesmr->ibmr.rkey = stag;
2163 nesmr->ibmr.lkey = stag;
2164 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2165 ibmr = &nesmr->ibmr;
3c2d774c
GS		 2166 } else {
2167 kfree(nesmr);
2168 ibmr = ERR_PTR(-ENOMEM);
2169 }
2170
2171 reg_phys_err:
2172 /* free the resources */
2173 if (root_pbl_index == 1) {
2174 /* single PBL case */
2175 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase);
2176 } else {
2177 for (i=0; i<root_pbl_index; i++) {
2178 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase,
2179 root_vpbl.leaf_vpbl[i].pbl_pbase);
2180 }
2181 kfree(root_vpbl.leaf_vpbl);
2182 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2183 root_vpbl.pbl_pbase);
2184 }
2185
2186 return ibmr;
2187}
2188
2189
2190/**
2191 * nes_get_dma_mr
2192 */
2193static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc)
2194{
2195 struct ib_phys_buf bl;
2196 u64 kva = 0;
2197
2198 nes_debug(NES_DBG_MR, "\n");
2199
2200 bl.size = (u64)0xffffffffffULL;
2201 bl.addr = 0;
2202 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva);
2203}
2204
2205
2206/**
2207 * nes_reg_user_mr
2208 */
2209static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
2210 u64 virt, int acc, struct ib_udata *udata)
2211{
2212 u64 iova_start;
2213 __le64 *pbl;
2214 u64 region_length;
2215 dma_addr_t last_dma_addr = 0;
2216 dma_addr_t first_dma_addr = 0;
2217 struct nes_pd *nespd = to_nespd(pd);
2218 struct nes_vnic *nesvnic = to_nesvnic(pd->device);
2219 struct nes_device *nesdev = nesvnic->nesdev;
2220 struct nes_adapter *nesadapter = nesdev->nesadapter;
2221 struct ib_mr *ibmr = ERR_PTR(-EINVAL);
eeb8461e 2222 struct scatterlist *sg;
3c2d774c
GS		 2223 struct nes_ucontext *nes_ucontext;
2224 struct nes_pbl *nespbl;
2225 struct nes_mr *nesmr;
2226 struct ib_umem *region;
2227 struct nes_mem_reg_req req;
2228 struct nes_vpbl vpbl;
2229 struct nes_root_vpbl root_vpbl;
eeb8461e 2230 int entry, page_index;
3c2d774c
GS		 2231 int page_count = 0;
2232 int err, pbl_depth = 0;
2233 int chunk_pages;
2234 int ret;
2235 u32 stag;
2236 u32 stag_index = 0;
2237 u32 next_stag_index;
2238 u32 driver_key;
2239 u32 root_pbl_index = 0;
2240 u32 cur_pbl_index = 0;
2241 u32 skip_pages;
2242 u16 pbl_count;
2243 u8 single_page = 1;
2244 u8 stag_key;
eeb8461e 2245 int first_page = 1;
3c2d774c 2246
cb9fbc5c 2247 region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
3c2d774c
GS		 2248 if (IS_ERR(region)) {
2249 return (struct ib_mr *)region;
2250 }
2251
2252 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u,"
2253 " offset = %u, page size = %u.\n",
2254 (unsigned long int)start, (unsigned long int)virt, (u32)length,
406f9e5f 2255 ib_umem_offset(region), region->page_size);
3c2d774c 2256
406f9e5f 2257 skip_pages = ((u32)ib_umem_offset(region)) >> 12;
3c2d774c 2258
e2e435f2
JL		 2259 if (ib_copy_from_udata(&req, udata, sizeof(req))) {
2260 ib_umem_release(region);
3c2d774c 2261 return ERR_PTR(-EFAULT);
e2e435f2 2262 }
3c2d774c
GS		 2263 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
2264
2265 switch (req.reg_type) {
2266 case IWNES_MEMREG_TYPE_MEM:
2267 pbl_depth = 0;
2268 region_length = 0;
2269 vpbl.pbl_vbase = NULL;
2270 root_vpbl.pbl_vbase = NULL;
2271 root_vpbl.pbl_pbase = 0;
2272
2273 get_random_bytes(&next_stag_index, sizeof(next_stag_index));
2274 stag_key = (u8)next_stag_index;
2275
2276 driver_key = next_stag_index & 0x70000000;
2277
2278 next_stag_index >>= 8;
2279 next_stag_index %= nesadapter->max_mr;
2280
2281 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
81821644 2282 nesadapter->max_mr, &stag_index, &next_stag_index, NES_RESOURCE_USER_MR);
3c2d774c
GS		 2283 if (err) {
2284 ib_umem_release(region);
2285 return ERR_PTR(err);
2286 }
2287
2288 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2289 if (!nesmr) {
2290 ib_umem_release(region);
2291 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2292 return ERR_PTR(-ENOMEM);
2293 }
2294 nesmr->region = region;
2295
eeb8461e
YH		 2296 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2297 if (sg_dma_address(sg) & ~PAGE_MASK) {
2298 ib_umem_release(region);
2299 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2300 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
2301 (unsigned int) sg_dma_address(sg));
2302 ibmr = ERR_PTR(-EINVAL);
2303 kfree(nesmr);
2304 goto reg_user_mr_err;
2305 }
3c2d774c 2306
eeb8461e
YH		 2307 if (!sg_dma_len(sg)) {
2308 ib_umem_release(region);
2309 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2310 stag_index);
2311 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
2312 ibmr = ERR_PTR(-EINVAL);
2313 kfree(nesmr);
2314 goto reg_user_mr_err;
2315 }
3c2d774c 2316
eeb8461e
YH		 2317 region_length += sg_dma_len(sg);
2318 chunk_pages = sg_dma_len(sg) >> 12;
2319 region_length -= skip_pages << 12;
2320 for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
2321 skip_pages = 0;
406f9e5f 2322 if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
eeb8461e
YH		 2323 goto enough_pages;
2324 if ((page_count&0x01FF) == 0) {
2325 if (page_count >= 1024 * 512) {
2326 ib_umem_release(region);
2327 nes_free_resource(nesadapter,
2328 nesadapter->allocated_mrs, stag_index);
2329 kfree(nesmr);
2330 ibmr = ERR_PTR(-E2BIG);
2331 goto reg_user_mr_err;
2332 }
2333 if (root_pbl_index == 1) {
2334 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
2335 8192, &root_vpbl.pbl_pbase);
2336 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
2337 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
2338 if (!root_vpbl.pbl_vbase) {
3c2d774c 2339 ib_umem_release(region);
eeb8461e
YH		 2340 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2341 vpbl.pbl_pbase);
2342 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2343 stag_index);
3c2d774c 2344 kfree(nesmr);
eeb8461e 2345 ibmr = ERR_PTR(-ENOMEM);
3c2d774c
GS		 2346 goto reg_user_mr_err;
2347 }
eeb8461e
YH		 2348 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024,
2349 GFP_KERNEL);
2350 if (!root_vpbl.leaf_vpbl) {
3c2d774c 2351 ib_umem_release(region);
eeb8461e
YH		 2352 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2353 root_vpbl.pbl_pbase);
2354 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2355 vpbl.pbl_pbase);
2356 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2357 stag_index);
3c2d774c 2358 kfree(nesmr);
eeb8461e 2359 ibmr = ERR_PTR(-ENOMEM);
3c2d774c
GS		 2360 goto reg_user_mr_err;
2361 }
eeb8461e
YH		 2362 root_vpbl.pbl_vbase[0].pa_low =
2363 cpu_to_le32((u32)vpbl.pbl_pbase);
2364 root_vpbl.pbl_vbase[0].pa_high =
2365 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
2366 root_vpbl.leaf_vpbl[0] = vpbl;
3c2d774c 2367 }
eeb8461e
YH		 2368 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
2369 &vpbl.pbl_pbase);
2370 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
2371 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
2372 if (!vpbl.pbl_vbase) {
2373 ib_umem_release(region);
2374 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
2375 ibmr = ERR_PTR(-ENOMEM);
2376 kfree(nesmr);
2377 goto reg_user_mr_err;
2378 }
2379 if (1 <= root_pbl_index) {
2380 root_vpbl.pbl_vbase[root_pbl_index].pa_low =
2381 cpu_to_le32((u32)vpbl.pbl_pbase);
2382 root_vpbl.pbl_vbase[root_pbl_index].pa_high =
2383 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
2384 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
2385 }
2386 root_pbl_index++;
2387 cur_pbl_index = 0;
2388 }
2389 if (single_page) {
2390 if (page_count != 0) {
2391 if ((last_dma_addr+4096) !=
2392 (sg_dma_address(sg)+
2393 (page_index*4096)))
2394 single_page = 0;
2395 last_dma_addr = sg_dma_address(sg)+
2396 (page_index*4096);
2397 } else {
2398 first_dma_addr = sg_dma_address(sg)+
2399 (page_index*4096);
2400 last_dma_addr = first_dma_addr;
3c2d774c 2401 }
3c2d774c 2402 }
eeb8461e
YH		 2403
2404 vpbl.pbl_vbase[cur_pbl_index].pa_low =
2405 cpu_to_le32((u32)(sg_dma_address(sg)+
2406 (page_index*4096)));
2407 vpbl.pbl_vbase[cur_pbl_index].pa_high =
2408 cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
2409 (page_index*4096))) >> 32)));
2410 cur_pbl_index++;
2411 page_count++;
3c2d774c
GS		 2412 }
2413 }
eeb8461e 2414
3c2d774c
GS		 2415 enough_pages:
2416 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
2417 " stag_key=0x%08x\n",
2418 stag_index, driver_key, stag_key);
2419 stag = stag_index << 8;
2420 stag |= driver_key;
2421 stag += (u32)stag_key;
3c2d774c
GS		 2422
2423 iova_start = virt;
2424 /* Make the leaf PBL the root if only one PBL */
2425 if (root_pbl_index == 1) {
2426 root_vpbl.pbl_pbase = vpbl.pbl_pbase;
2427 }
2428
2429 if (single_page) {
2430 pbl_count = 0;
2431 } else {
2432 pbl_count = root_pbl_index;
2433 first_dma_addr = 0;
2434 }
2435 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X,"
2436 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n",
2437 stag, (unsigned int)iova_start,
2438 (unsigned int)region_length, stag_index,
2439 (unsigned long long)region->length, pbl_count);
0145f341
DW		 2440 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl,
2441 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc,
2442 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k);
3c2d774c
GS		 2443
2444 nes_debug(NES_DBG_MR, "ret=%d\n", ret);
2445
2446 if (ret == 0) {
2447 nesmr->ibmr.rkey = stag;
2448 nesmr->ibmr.lkey = stag;
2449 nesmr->mode = IWNES_MEMREG_TYPE_MEM;
2450 ibmr = &nesmr->ibmr;
3c2d774c
GS		 2451 } else {
2452 ib_umem_release(region);
2453 kfree(nesmr);
2454 ibmr = ERR_PTR(-ENOMEM);
2455 }
2456
2457 reg_user_mr_err:
2458 /* free the resources */
2459 if (root_pbl_index == 1) {
2460 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
2461 vpbl.pbl_pbase);
2462 } else {
2463 for (page_index=0; page_index<root_pbl_index; page_index++) {
2464 pci_free_consistent(nesdev->pcidev, 4096,
2465 root_vpbl.leaf_vpbl[page_index].pbl_vbase,
2466 root_vpbl.leaf_vpbl[page_index].pbl_pbase);
2467 }
2468 kfree(root_vpbl.leaf_vpbl);
2469 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
2470 root_vpbl.pbl_pbase);
2471 }
2472
2473 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr);
2474
2475 return ibmr;
3c2d774c
GS		 2476 case IWNES_MEMREG_TYPE_QP:
2477 case IWNES_MEMREG_TYPE_CQ:
7d9c199a
TN		 2478 if (!region->length) {
2479 nes_debug(NES_DBG_MR, "Unable to register zero length region for CQ\n");
2480 ib_umem_release(region);
2481 return ERR_PTR(-EINVAL);
2482 }
3c2d774c
GS		 2483 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL);
2484 if (!nespbl) {
2485 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n");
2486 ib_umem_release(region);
2487 return ERR_PTR(-ENOMEM);
2488 }
2489 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
2490 if (!nesmr) {
2491 ib_umem_release(region);
2492 kfree(nespbl);
2493 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n");
2494 return ERR_PTR(-ENOMEM);
2495 }
2496 nesmr->region = region;
2497 nes_ucontext = to_nesucontext(pd->uobject->context);
2498 pbl_depth = region->length >> 12;
2499 pbl_depth += (region->length & (4096-1)) ? 1 : 0;
2500 nespbl->pbl_size = pbl_depth*sizeof(u64);
2501 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2502 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory");
2503 } else {
2504 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory");
2505 }
2506
2507 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n",
2508 nespbl->pbl_size, pbl_depth);
2509 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size,
2510 &nespbl->pbl_pbase);
2511 if (!pbl) {
2512 ib_umem_release(region);
2513 kfree(nesmr);
2514 kfree(nespbl);
2515 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n");
2516 return ERR_PTR(-ENOMEM);
2517 }
2518
2519 nespbl->pbl_vbase = (u64 *)pbl;
2520 nespbl->user_base = start;
71e0957c 2521 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx,"
3c2d774c 2522 " pbl_vbase=%p user_base=0x%lx\n",
71e0957c
RD		 2523 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
2524 (void *) nespbl->pbl_vbase, nespbl->user_base);
3c2d774c 2525
eeb8461e
YH		 2526 for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
2527 chunk_pages = sg_dma_len(sg) >> 12;
2528 chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
2529 if (first_page) {
2530 nespbl->page = sg_page(sg);
2531 first_page = 0;
2532 }
2533
2534 for (page_index = 0; page_index < chunk_pages; page_index++) {
2535 ((__le32 *)pbl)[0] = cpu_to_le32((u32)
2536 (sg_dma_address(sg)+
2537 (page_index*4096)));
2538 ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
2539 (sg_dma_address(sg)+
2540 (page_index*4096)))>>32);
2541 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
2542 (unsigned long long)*pbl,
2543 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
2544 pbl++;
3c2d774c
GS		 2545 }
2546 }
eeb8461e 2547
3c2d774c
GS		 2548 if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
2549 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list);
2550 } else {
2551 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list);
2552 }
2553 nesmr->ibmr.rkey = -1;
2554 nesmr->ibmr.lkey = -1;
2555 nesmr->mode = req.reg_type;
2556 return &nesmr->ibmr;
3c2d774c
GS		 2557 }
2558
e2e435f2 2559 ib_umem_release(region);
3c2d774c
GS		 2560 return ERR_PTR(-ENOSYS);
2561}
2562
2563
2564/**
2565 * nes_dereg_mr
2566 */
2567static int nes_dereg_mr(struct ib_mr *ib_mr)
2568{
2569 struct nes_mr *nesmr = to_nesmr(ib_mr);
2570 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device);
2571 struct nes_device *nesdev = nesvnic->nesdev;
2572 struct nes_adapter *nesadapter = nesdev->nesadapter;
2573 struct nes_hw_cqp_wqe *cqp_wqe;
2574 struct nes_cqp_request *cqp_request;
2575 unsigned long flags;
2576 int ret;
2577 u16 major_code;
2578 u16 minor_code;
2579
0ba24dd3
SG		 2580
2581 if (nesmr->pages)
2582 pci_free_consistent(nesdev->pcidev,
2583 nesmr->max_pages * sizeof(u64),
2584 nesmr->pages,
2585 nesmr->paddr);
2586
3c2d774c
GS		 2587 if (nesmr->region) {
2588 ib_umem_release(nesmr->region);
2589 }
2590 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) {
2591 kfree(nesmr);
2592 return 0;
2593 }
2594
2595 /* Deallocate the region with the adapter */
2596
2597 cqp_request = nes_get_cqp_request(nesdev);
2598 if (cqp_request == NULL) {
2599 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n");
2600 return -ENOMEM;
2601 }
2602 cqp_request->waiting = 1;
2603 cqp_wqe = &cqp_request->cqp_wqe;
2604
3c2d774c
GS		 2605 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2606 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2607 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO |
2608 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR);
2609 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey);
2610
2611 atomic_set(&cqp_request->refcount, 2);
8294f297 2612 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 2613
2614 /* Wait for CQP */
2615 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey);
2616 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2617 NES_EVENT_TIMEOUT);
2618 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u,"
2619 " CQP Major:Minor codes = 0x%04X:0x%04X\n",
2620 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code);
2621
3c2d774c
GS		 2622 major_code = cqp_request->major_code;
2623 minor_code = cqp_request->minor_code;
1ff66e8c
RD		 2624
2625 nes_put_cqp_request(nesdev, cqp_request);
2626
3c2d774c
GS		 2627 if (!ret) {
2628 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag,"
2629 " ib_mr=%p, rkey = 0x%08X\n",
2630 ib_mr, ib_mr->rkey);
2631 return -ETIME;
2632 } else if (major_code) {
2633 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting"
2634 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n",
2635 major_code, minor_code, ib_mr, ib_mr->rkey);
2636 return -EIO;
dae5d13a
DW		 2637 }
2638
2639 if (nesmr->pbls_used != 0) {
2640 spin_lock_irqsave(&nesadapter->pbl_lock, flags);
2641 if (nesmr->pbl_4k) {
2642 nesadapter->free_4kpbl += nesmr->pbls_used;
2643 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl)
2644 printk(KERN_ERR PFX "free 4KB PBLs(%u) has "
2645 "exceeded the max(%u)\n",
2646 nesadapter->free_4kpbl,
2647 nesadapter->max_4kpbl);
2648 } else {
2649 nesadapter->free_256pbl += nesmr->pbls_used;
2650 if (nesadapter->free_256pbl > nesadapter->max_256pbl)
2651 printk(KERN_ERR PFX "free 256B PBLs(%u) has "
2652 "exceeded the max(%u)\n",
2653 nesadapter->free_256pbl,
2654 nesadapter->max_256pbl);
2655 }
2656 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags);
2657 }
2658 nes_free_resource(nesadapter, nesadapter->allocated_mrs,
2659 (ib_mr->rkey & 0x0fffff00) >> 8);
2660
2661 kfree(nesmr);
2662
2663 return 0;
3c2d774c
GS		 2664}
2665
2666
2667/**
2668 * show_rev
2669 */
f4e91eb4
TJ		 2670static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
2671 char *buf)
3c2d774c
GS		 2672{
2673 struct nes_ib_device *nesibdev =
f4e91eb4 2674 container_of(dev, struct nes_ib_device, ibdev.dev);
3c2d774c
GS		 2675 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2676
2677 nes_debug(NES_DBG_INIT, "\n");
2678 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev);
2679}
2680
2681
2682/**
2683 * show_fw_ver
2684 */
f4e91eb4
TJ		 2685static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr,
2686 char *buf)
3c2d774c
GS		 2687{
2688 struct nes_ib_device *nesibdev =
f4e91eb4 2689 container_of(dev, struct nes_ib_device, ibdev.dev);
3c2d774c
GS		 2690 struct nes_vnic *nesvnic = nesibdev->nesvnic;
2691
2692 nes_debug(NES_DBG_INIT, "\n");
0e4562da
CT		 2693 return sprintf(buf, "%u.%u\n",
2694 (nesvnic->nesdev->nesadapter->firmware_version >> 16),
2695 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff));
3c2d774c
GS		 2696}
2697
2698
2699/**
2700 * show_hca
2701 */
f4e91eb4
TJ		 2702static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
2703 char *buf)
3c2d774c
GS		 2704{
2705 nes_debug(NES_DBG_INIT, "\n");
2706 return sprintf(buf, "NES020\n");
2707}
2708
2709
2710/**
2711 * show_board
2712 */
f4e91eb4
TJ		 2713static ssize_t show_board(struct device *dev, struct device_attribute *attr,
2714 char *buf)
3c2d774c
GS		 2715{
2716 nes_debug(NES_DBG_INIT, "\n");
2717 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID");
2718}
2719
2720
f4e91eb4
TJ		 2721static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
2722static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
2723static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
2724static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
3c2d774c 2725
f4e91eb4
TJ		 2726static struct device_attribute *nes_dev_attributes[] = {
2727 &dev_attr_hw_rev,
2728 &dev_attr_fw_ver,
2729 &dev_attr_hca_type,
2730 &dev_attr_board_id
3c2d774c
GS		 2731};
2732
2733
2734/**
2735 * nes_query_qp
2736 */
2737static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2738 int attr_mask, struct ib_qp_init_attr *init_attr)
2739{
2740 struct nes_qp *nesqp = to_nesqp(ibqp);
2741
2742 nes_debug(NES_DBG_QP, "\n");
2743
2744 attr->qp_access_flags = 0;
2745 attr->cap.max_send_wr = nesqp->hwqp.sq_size;
2746 attr->cap.max_recv_wr = nesqp->hwqp.rq_size;
2747 attr->cap.max_recv_sge = 1;
eadde3a1
CT		 2748 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA)
2749 attr->cap.max_inline_data = 0;
2750 else
2751 attr->cap.max_inline_data = 64;
3c2d774c
GS		 2752
2753 init_attr->event_handler = nesqp->ibqp.event_handler;
2754 init_attr->qp_context = nesqp->ibqp.qp_context;
2755 init_attr->send_cq = nesqp->ibqp.send_cq;
2756 init_attr->recv_cq = nesqp->ibqp.recv_cq;
4127c365 2757 init_attr->srq = nesqp->ibqp.srq;
3c2d774c
GS		 2758 init_attr->cap = attr->cap;
2759
2760 return 0;
2761}
2762
2763
2764/**
2765 * nes_hw_modify_qp
2766 */
2767int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp,
8b1c9dc4 2768 u32 next_iwarp_state, u32 termlen, u32 wait_completion)
3c2d774c
GS		 2769{
2770 struct nes_hw_cqp_wqe *cqp_wqe;
2771 /* struct iw_cm_id *cm_id = nesqp->cm_id; */
2772 /* struct iw_cm_event cm_event; */
2773 struct nes_cqp_request *cqp_request;
3c2d774c
GS		 2774 int ret;
2775 u16 major_code;
2776
2777 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n",
2778 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
2779
2780 cqp_request = nes_get_cqp_request(nesdev);
2781 if (cqp_request == NULL) {
2782 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n");
2783 return -ENOMEM;
2784 }
2785 if (wait_completion) {
2786 cqp_request->waiting = 1;
2787 } else {
2788 cqp_request->waiting = 0;
2789 }
2790 cqp_wqe = &cqp_request->cqp_wqe;
2791
2792 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
2793 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state);
2794 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n",
2795 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX]));
2796 nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
2797 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id);
2798 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase);
2799
8b1c9dc4
DW		 2800 /* If sending a terminate message, fill in the length (in words) */
2801 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) &&
2802 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) {
2803 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT;
2804 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen);
2805 }
2806
3c2d774c 2807 atomic_set(&cqp_request->refcount, 2);
8294f297 2808 nes_post_cqp_request(nesdev, cqp_request);
3c2d774c
GS		 2809
2810 /* Wait for CQP */
2811 if (wait_completion) {
2812 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n",
2813 nesqp->hwqp.qp_id); */
2814 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0),
2815 NES_EVENT_TIMEOUT);
2816 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, "
2817 "CQP Major:Minor codes = 0x%04X:0x%04X.\n",
2818 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code);
2819 major_code = cqp_request->major_code;
2820 if (major_code) {
2821 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed"
2822 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n",
2823 nesqp->hwqp.qp_id, cqp_request->major_code,
2824 cqp_request->minor_code, next_iwarp_state);
2825 }
1ff66e8c
RD		 2826
2827 nes_put_cqp_request(nesdev, cqp_request);
2828
3c2d774c
GS		 2829 if (!ret)
2830 return -ETIME;
2831 else if (major_code)
2832 return -EIO;
2833 else
2834 return 0;
2835 } else {
2836 return 0;
2837 }
2838}
2839
2840
2841/**
2842 * nes_modify_qp
2843 */
2844int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2845 int attr_mask, struct ib_udata *udata)
2846{
2847 struct nes_qp *nesqp = to_nesqp(ibqp);
2848 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
2849 struct nes_device *nesdev = nesvnic->nesdev;
2850 /* u32 cqp_head; */
2851 /* u32 counter; */
2852 u32 next_iwarp_state = 0;
2853 int err;
2854 unsigned long qplockflags;
2855 int ret;
2856 u16 original_last_aeq;
2857 u8 issue_modify_qp = 0;
3c2d774c
GS		 2858 u8 dont_wait = 0;
2859
2860 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u,"
2861 " iwarp_state=0x%X, refcount=%d\n",
2862 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state,
2863 nesqp->iwarp_state, atomic_read(&nesqp->refcount));
2864
3c2d774c
GS		 2865 spin_lock_irqsave(&nesqp->lock, qplockflags);
2866
2867 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X,"
2868 " QP Access Flags=0x%X, attr_mask = 0x%0x\n",
2869 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state,
2870 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask);
2871
2872 if (attr_mask & IB_QP_STATE) {
2873 switch (attr->qp_state) {
2874 case IB_QPS_INIT:
2875 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n",
2876 nesqp->hwqp.qp_id);
2877 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2878 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2879 return -EINVAL;
2880 }
2881 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2882 issue_modify_qp = 1;
2883 break;
2884 case IB_QPS_RTR:
2885 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n",
2886 nesqp->hwqp.qp_id);
2887 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) {
2888 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2889 return -EINVAL;
2890 }
2891 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE;
2892 issue_modify_qp = 1;
2893 break;
2894 case IB_QPS_RTS:
2895 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n",
2896 nesqp->hwqp.qp_id);
2897 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) {
2898 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2899 return -EINVAL;
2900 }
2901 if (nesqp->cm_id == NULL) {
2902 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n",
2903 nesqp->hwqp.qp_id );
2904 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2905 return -EINVAL;
2906 }
2907 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS;
2908 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS)
2909 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID |
2910 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID;
2911 issue_modify_qp = 1;
2912 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED;
2913 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS;
2914 nesqp->hte_added = 1;
2915 break;
2916 case IB_QPS_SQD:
2917 issue_modify_qp = 1;
2918 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n",
2919 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail);
2920 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2921 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2922 return 0;
2923 } else {
2924 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) {
2925 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2926 " ignored due to current iWARP state\n",
2927 nesqp->hwqp.qp_id);
2928 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2929 return -EINVAL;
2930 }
2931 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) {
2932 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing"
2933 " already done based on hw state.\n",
2934 nesqp->hwqp.qp_id);
2935 issue_modify_qp = 0;
3c2d774c
GS		 2936 }
2937 switch (nesqp->hw_iwarp_state) {
2938 case NES_AEQE_IWARP_STATE_CLOSING:
2939 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
d5fb476a 2940 break;
3c2d774c
GS		 2941 case NES_AEQE_IWARP_STATE_TERMINATE:
2942 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2943 break;
2944 case NES_AEQE_IWARP_STATE_ERROR:
2945 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2946 break;
2947 default:
2948 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING;
3c2d774c
GS		 2949 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING;
2950 break;
2951 }
2952 }
2953 break;
2954 case IB_QPS_SQE:
2955 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n",
2956 nesqp->hwqp.qp_id);
2957 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) {
2958 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2959 return -EINVAL;
2960 }
2961 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2962 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE;
2963 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE;
2964 issue_modify_qp = 1;
3c2d774c
GS		 2965 break;
2966 case IB_QPS_ERR:
2967 case IB_QPS_RESET:
2968 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) {
2969 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2970 return -EINVAL;
2971 }
2972 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n",
2973 nesqp->hwqp.qp_id);
8b1c9dc4
DW		 2974 if (nesqp->term_flags)
2975 del_timer(&nesqp->terminate_timer);
2976
3c2d774c
GS		 2977 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR;
2978 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */
2979 if (nesqp->hte_added) {
2980 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n");
2981 next_iwarp_state |= NES_CQP_QP_DEL_HTE;
2982 nesqp->hte_added = 0;
2983 }
2984 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) &&
cd6860eb 2985 (nesdev->iw_status) &&
3c2d774c
GS		 2986 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) {
2987 next_iwarp_state |= NES_CQP_QP_RESET;
3c2d774c
GS		 2988 } else {
2989 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n",
2990 nesqp->hwqp.qp_id, nesqp->hw_tcp_state);
2991 dont_wait = 1;
2992 }
2993 issue_modify_qp = 1;
2994 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR;
2995 break;
2996 default:
2997 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3c2d774c
GS		 2998 return -EINVAL;
2999 break;
3000 }
3001
3002 nesqp->ibqp_state = attr->qp_state;
a67b078c
TN		 3003 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK;
3004 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n",
3005 nesqp->iwarp_state);
3c2d774c
GS		 3006 }
3007
3008 if (attr_mask & IB_QP_ACCESS_FLAGS) {
3009 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) {
3010 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3011 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3012 issue_modify_qp = 1;
3013 }
3014 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) {
3015 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN);
3016 issue_modify_qp = 1;
3017 }
3018 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) {
3019 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN);
3020 issue_modify_qp = 1;
3021 }
3022 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) {
3023 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN);
3024 issue_modify_qp = 1;
3025 }
3026
3027 if (nesqp->user_mode) {
3028 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN |
3029 NES_QPCONTEXT_MISC_RDMA_READ_EN);
3030 issue_modify_qp = 1;
3031 }
3032 }
3033
3034 original_last_aeq = nesqp->last_aeq;
3035 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3036
3037 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp);
3038
3039 ret = 0;
3040
3041
3042 if (issue_modify_qp) {
3043 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n");
8b1c9dc4 3044 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1);
3c2d774c
GS		 3045 if (ret)
3046 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)"
3047 " failed for QP%u.\n",
3048 next_iwarp_state, nesqp->hwqp.qp_id);
3049
3050 }
3051
3052 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) {
3053 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d),"
3054 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3055 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3056 original_last_aeq, nesqp->last_aeq);
349850f0 3057 if (!ret || original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) {
3c2d774c
GS		 3058 if (dont_wait) {
3059 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) {
3060 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d),"
3061 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3062 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3063 original_last_aeq, nesqp->last_aeq);
3064 /* this one is for the cm_disconnect thread */
3c2d774c
GS		 3065 spin_lock_irqsave(&nesqp->lock, qplockflags);
3066 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED;
3067 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT;
3068 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3069 nes_cm_disconn(nesqp);
3070 } else {
3071 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n",
3072 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3c2d774c
GS		 3073 }
3074 } else {
3075 spin_lock_irqsave(&nesqp->lock, qplockflags);
3076 if (nesqp->cm_id) {
3077 /* These two are for the timer thread */
3078 if (atomic_inc_return(&nesqp->close_timer_started) == 1) {
3c2d774c
GS		 3079 nesqp->cm_id->add_ref(nesqp->cm_id);
3080 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3081 " need ae to finish up, original_last_aeq = 0x%04X."
3082 " last_aeq = 0x%04X, scheduling timer.\n",
3083 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3084 original_last_aeq, nesqp->last_aeq);
3085 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0);
3086 }
3087 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3088 } else {
3089 spin_unlock_irqrestore(&nesqp->lock, qplockflags);
3090 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d),"
3091 " need ae to finish up, original_last_aeq = 0x%04X."
3092 " last_aeq = 0x%04X.\n",
3093 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3094 original_last_aeq, nesqp->last_aeq);
3095 }
3096 }
3097 } else {
3098 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3099 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3100 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3101 original_last_aeq, nesqp->last_aeq);
3c2d774c
GS		 3102 }
3103 } else {
3104 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up,"
3105 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n",
3106 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount),
3107 original_last_aeq, nesqp->last_aeq);
3c2d774c
GS		 3108 }
3109
3110 err = 0;
3111
3112 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n",
3113 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount));
3114
3115 return err;
3116}
3117
3118
3119/**
3120 * nes_muticast_attach
3121 */
3122static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3123{
3124 nes_debug(NES_DBG_INIT, "\n");
3125 return -ENOSYS;
3126}
3127
3128
3129/**
3130 * nes_multicast_detach
3131 */
3132static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
3133{
3134 nes_debug(NES_DBG_INIT, "\n");
3135 return -ENOSYS;
3136}
3137
3138
3139/**
3140 * nes_process_mad
3141 */
3142static int nes_process_mad(struct ib_device *ibdev, int mad_flags,
a97e2d86 3143 u8 port_num, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
4cd7c947
IW		 3144 const struct ib_mad_hdr *in, size_t in_mad_size,
3145 struct ib_mad_hdr *out, size_t *out_mad_size,
3146 u16 *out_mad_pkey_index)
3c2d774c
GS		 3147{
3148 nes_debug(NES_DBG_INIT, "\n");
3149 return -ENOSYS;
3150}
3151
3152static inline void
3153fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey)
3154{
3155 int sge_index;
3156 int total_payload_length = 0;
3157 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) {
3158 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3159 ib_wr->sg_list[sge_index].addr);
3160 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4),
3161 ib_wr->sg_list[sge_index].length);
3162 if (uselkey)
3163 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4),
3164 (ib_wr->sg_list[sge_index].lkey));
3165 else
3166 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0);
3167
3168 total_payload_length += ib_wr->sg_list[sge_index].length;
3169 }
3170 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n",
3171 total_payload_length);
3172 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3173 total_payload_length);
3174}
3175
3176/**
3177 * nes_post_send
3178 */
3179static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
3180 struct ib_send_wr **bad_wr)
3181{
3182 u64 u64temp;
3183 unsigned long flags = 0;
3184 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3185 struct nes_device *nesdev = nesvnic->nesdev;
3186 struct nes_qp *nesqp = to_nesqp(ibqp);
3187 struct nes_hw_qp_wqe *wqe;
649fe4ae 3188 int err = 0;
3c2d774c
GS		 3189 u32 qsize = nesqp->hwqp.sq_size;
3190 u32 head;
649fe4ae
CT		 3191 u32 wqe_misc = 0;
3192 u32 wqe_count = 0;
3c2d774c 3193 u32 counter;
3c2d774c 3194
e5dec394
FZ		 3195 if (nesqp->ibqp_state > IB_QPS_RTS) {
3196 err = -EINVAL;
3197 goto out;
3198 }
3c2d774c 3199
5880ff19 3200 spin_lock_irqsave(&nesqp->lock, flags);
3c2d774c
GS		 3201
3202 head = nesqp->hwqp.sq_head;
3203
3204 while (ib_wr) {
8b1c9dc4
DW		 3205 /* Check for QP error */
3206 if (nesqp->term_flags) {
3207 err = -EINVAL;
3208 break;
3209 }
3210
3c2d774c
GS		 3211 /* Check for SQ overflow */
3212 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) {
831d06cf 3213 err = -ENOMEM;
3c2d774c
GS		 3214 break;
3215 }
3216
3217 wqe = &nesqp->hwqp.sq_vbase[head];
3218 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n",
3219 nesqp->hwqp.qp_id, wqe, head); */
3220 nes_fill_init_qp_wqe(wqe, nesqp, head);
3221 u64temp = (u64)(ib_wr->wr_id);
3222 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3223 u64temp);
649fe4ae
CT		 3224 switch (ib_wr->opcode) {
3225 case IB_WR_SEND:
3226 case IB_WR_SEND_WITH_INV:
3227 if (IB_WR_SEND == ib_wr->opcode) {
3228 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3229 wqe_misc = NES_IWARP_SQ_OP_SENDSE;
3230 else
3231 wqe_misc = NES_IWARP_SQ_OP_SEND;
3232 } else {
3233 if (ib_wr->send_flags & IB_SEND_SOLICITED)
3234 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV;
3235 else
3236 wqe_misc = NES_IWARP_SQ_OP_SENDINV;
3c2d774c 3237
649fe4ae
CT		 3238 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3239 ib_wr->ex.invalidate_rkey);
3240 }
3c2d774c 3241
649fe4ae
CT		 3242 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3243 err = -EINVAL;
3244 break;
3c2d774c
GS		 3245 }
3246
649fe4ae
CT		 3247 if (ib_wr->send_flags & IB_SEND_FENCE)
3248 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3249
3250 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3251 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3252 (ib_wr->sg_list[0].length <= 64)) {
3253 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3254 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3256 ib_wr->sg_list[0].length);
3257 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3258 } else {
3259 fill_wqe_sg_send(wqe, ib_wr, 1);
3260 }
3261
3262 break;
3263 case IB_WR_RDMA_WRITE:
3264 wqe_misc = NES_IWARP_SQ_OP_RDMAW;
3265 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3266 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n",
3267 ib_wr->num_sge, nesdev->nesadapter->max_sge);
3268 err = -EINVAL;
3269 break;
3270 }
3271
3272 if (ib_wr->send_flags & IB_SEND_FENCE)
3273 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE;
3274
3275 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
e622f2f4 3276 rdma_wr(ib_wr)->rkey);
649fe4ae 3277 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
e622f2f4 3278 rdma_wr(ib_wr)->remote_addr);
649fe4ae
CT		 3279
3280 if ((ib_wr->send_flags & IB_SEND_INLINE) &&
3281 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) &&
3282 (ib_wr->sg_list[0].length <= 64)) {
3283 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX],
3284 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length);
3285 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX,
3286 ib_wr->sg_list[0].length);
3287 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA;
3288 } else {
3289 fill_wqe_sg_send(wqe, ib_wr, 1);
3290 }
3291
3292 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] =
3293 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX];
3294 break;
3295 case IB_WR_RDMA_READ:
3296 case IB_WR_RDMA_READ_WITH_INV:
3297 /* iWARP only supports 1 sge for RDMA reads */
3298 if (ib_wr->num_sge > 1) {
3299 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n",
3300 ib_wr->num_sge);
3301 err = -EINVAL;
3302 break;
3303 }
3304 if (ib_wr->opcode == IB_WR_RDMA_READ) {
3305 wqe_misc = NES_IWARP_SQ_OP_RDMAR;
3306 } else {
3307 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV;
3308 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX,
3309 ib_wr->ex.invalidate_rkey);
3310 }
3311
3312 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX,
e622f2f4 3313 rdma_wr(ib_wr)->remote_addr);
649fe4ae 3314 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX,
e622f2f4 3315 rdma_wr(ib_wr)->rkey);
649fe4ae
CT		 3316 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX,
3317 ib_wr->sg_list->length);
3318 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX,
3319 ib_wr->sg_list->addr);
3320 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX,
3321 ib_wr->sg_list->lkey);
3322 break;
3323 case IB_WR_LOCAL_INV:
3324 wqe_misc = NES_IWARP_SQ_OP_LOCINV;
3325 set_wqe_32bit_value(wqe->wqe_words,
3326 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX,
3327 ib_wr->ex.invalidate_rkey);
3328 break;
0ba24dd3
SG		 3329 case IB_WR_REG_MR:
3330 {
3331 struct nes_mr *mr = to_nesmr(reg_wr(ib_wr)->mr);
3332 int page_shift = ilog2(reg_wr(ib_wr)->mr->page_size);
3333 int flags = reg_wr(ib_wr)->access;
3334
3335 if (mr->npages > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) {
3336 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n");
3337 err = -EINVAL;
3338 break;
3339 }
3340 wqe_misc = NES_IWARP_SQ_OP_FAST_REG;
3341 set_wqe_64bit_value(wqe->wqe_words,
3342 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX,
3343 mr->ibmr.iova);
3344 set_wqe_32bit_value(wqe->wqe_words,
3345 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX,
3346 mr->ibmr.length);
3347 set_wqe_32bit_value(wqe->wqe_words,
3348 NES_IWARP_SQ_FMR_WQE_LENGTH_HIGH_IDX, 0);
3349 set_wqe_32bit_value(wqe->wqe_words,
3350 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX,
3351 reg_wr(ib_wr)->key);
3352
3353 if (page_shift == 12) {
3354 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K;
3355 } else if (page_shift == 21) {
3356 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M;
3357 } else {
3358 nes_debug(NES_DBG_IW_TX, "Invalid page shift,"
3359 " ib_wr=%u, max=1\n", ib_wr->num_sge);
3360 err = -EINVAL;
3361 break;
3362 }
3363
3364 /* Set access_flags */
3365 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ;
3366 if (flags & IB_ACCESS_LOCAL_WRITE)
3367 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE;
3368
3369 if (flags & IB_ACCESS_REMOTE_WRITE)
3370 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE;
3371
3372 if (flags & IB_ACCESS_REMOTE_READ)
3373 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ;
3374
3375 if (flags & IB_ACCESS_MW_BIND)
3376 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND;
3377
3378 /* Fill in PBL info: */
3379 set_wqe_64bit_value(wqe->wqe_words,
3380 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX,
3381 mr->paddr);
3382
3383 set_wqe_32bit_value(wqe->wqe_words,
3384 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX,
3385 mr->npages * 8);
3386
3387 nes_debug(NES_DBG_IW_TX, "SQ_REG_MR: iova_start: %llx, "
3388 "length: %d, rkey: %0x, pgl_paddr: %llx, "
3389 "page_list_len: %u, wqe_misc: %x\n",
3390 (unsigned long long) mr->ibmr.iova,
3391 mr->ibmr.length,
3392 reg_wr(ib_wr)->key,
3393 (unsigned long long) mr->paddr,
3394 mr->npages,
3395 wqe_misc);
3396 break;
3397 }
649fe4ae
CT		 3398 default:
3399 /* error */
3400 err = -EINVAL;
3401 break;
3402 }
3403
e5dec394
FZ		 3404 if (err)
3405 break;
3406
d14152da 3407 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all)
3c2d774c 3408 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL;
d14152da 3409
3c2d774c
GS		 3410 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc);
3411
3412 ib_wr = ib_wr->next;
3413 head++;
3414 wqe_count++;
3415 if (head >= qsize)
3416 head = 0;
3417
3418 }
3419
3420 nesqp->hwqp.sq_head = head;
3421 barrier();
3422 while (wqe_count) {
3423 counter = min(wqe_count, ((u32)255));
3424 wqe_count -= counter;
3425 nes_write32(nesdev->regs + NES_WQE_ALLOC,
3426 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id);
3427 }
3428
5880ff19 3429 spin_unlock_irqrestore(&nesqp->lock, flags);
3c2d774c 3430
e5dec394 3431out:
3c2d774c
GS		 3432 if (err)
3433 *bad_wr = ib_wr;
3434 return err;
3435}
3436
3437
3438/**
3439 * nes_post_recv
3440 */
3441static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
3442 struct ib_recv_wr **bad_wr)
3443{
3444 u64 u64temp;
3445 unsigned long flags = 0;
3446 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device);
3447 struct nes_device *nesdev = nesvnic->nesdev;
3448 struct nes_qp *nesqp = to_nesqp(ibqp);
3449 struct nes_hw_qp_wqe *wqe;
3450 int err = 0;
3451 int sge_index;
3452 u32 qsize = nesqp->hwqp.rq_size;
3453 u32 head;
3454 u32 wqe_count = 0;
3455 u32 counter;
3456 u32 total_payload_length;
3457
4293fdc1
FZ		 3458 if (nesqp->ibqp_state > IB_QPS_RTS) {
3459 err = -EINVAL;
3460 goto out;
3461 }
3c2d774c 3462
5880ff19 3463 spin_lock_irqsave(&nesqp->lock, flags);
3c2d774c
GS		 3464
3465 head = nesqp->hwqp.rq_head;
3466
3467 while (ib_wr) {
8b1c9dc4
DW		 3468 /* Check for QP error */
3469 if (nesqp->term_flags) {
3470 err = -EINVAL;
3471 break;
3472 }
3473
3c2d774c
GS		 3474 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) {
3475 err = -EINVAL;
3476 break;
3477 }
3478 /* Check for RQ overflow */
3479 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) {
831d06cf 3480 err = -ENOMEM;
3c2d774c
GS		 3481 break;
3482 }
3483
3484 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge);
3485 wqe = &nesqp->hwqp.rq_vbase[head];
3486
3487 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n",
3488 nesqp->hwqp.qp_id, wqe, head); */
3489 nes_fill_init_qp_wqe(wqe, nesqp, head);
3490 u64temp = (u64)(ib_wr->wr_id);
3491 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX,
3492 u64temp);
3493 total_payload_length = 0;
3494 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) {
3495 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4),
3496 ib_wr->sg_list[sge_index].addr);
3497 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4),
3498 ib_wr->sg_list[sge_index].length);
3499 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4),
3500 ib_wr->sg_list[sge_index].lkey);
3501
3502 total_payload_length += ib_wr->sg_list[sge_index].length;
3503 }
3504 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX,
3505 total_payload_length);
3506
3507 ib_wr = ib_wr->next;
3508 head++;
3509 wqe_count++;
3510 if (head >= qsize)
3511 head = 0;
3512 }
3513
3514 nesqp->hwqp.rq_head = head;
3515 barrier();
3516 while (wqe_count) {
3517 counter = min(wqe_count, ((u32)255));
3518 wqe_count -= counter;
3519 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id);
3520 }
3521
5880ff19 3522 spin_unlock_irqrestore(&nesqp->lock, flags);
3c2d774c 3523
4293fdc1 3524out:
3c2d774c
GS		 3525 if (err)
3526 *bad_wr = ib_wr;
3527 return err;
3528}
3529
3530
3531/**
3532 * nes_poll_cq
3533 */
3534static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry)
3535{
3536 u64 u64temp;
3537 u64 wrid;
3c2d774c
GS		 3538 unsigned long flags = 0;
3539 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3540 struct nes_device *nesdev = nesvnic->nesdev;
3541 struct nes_cq *nescq = to_nescq(ibcq);
3542 struct nes_qp *nesqp;
3543 struct nes_hw_cqe cqe;
3544 u32 head;
6eed5e7c 3545 u32 wq_tail = 0;
3c2d774c
GS		 3546 u32 cq_size;
3547 u32 cqe_count = 0;
3548 u32 wqe_index;
3549 u32 u32temp;
6eed5e7c
DW		 3550 u32 move_cq_head = 1;
3551 u32 err_code;
3c2d774c
GS		 3552
3553 nes_debug(NES_DBG_CQ, "\n");
3554
5880ff19 3555 spin_lock_irqsave(&nescq->lock, flags);
3c2d774c
GS		 3556
3557 head = nescq->hw_cq.cq_head;
3558 cq_size = nescq->hw_cq.cq_size;
3559
3560 while (cqe_count < num_entries) {
5ee21fe0
DW		 3561 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) &
3562 NES_CQE_VALID) == 0)
3563 break;
3564
3565 /*
3566 * Make sure we read CQ entry contents *after*
3567 * we've checked the valid bit.
3568 */
3569 rmb();
3570
3571 cqe = nescq->hw_cq.cq_vbase[head];
5ee21fe0
DW		 3572 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3573 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1);
3574 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1);
3575 /* parse CQE, get completion context from WQE (either rq or sq) */
3576 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) |
3577 ((u64)u32temp);
3578
3579 if (u64temp) {
3580 nesqp = (struct nes_qp *)(unsigned long)u64temp;
3c2d774c
GS		 3581 memset(entry, 0, sizeof *entry);
3582 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) {
3583 entry->status = IB_WC_SUCCESS;
3584 } else {
320cdfd2
DW		 3585 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]);
3586 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) {
3587 entry->status = err_code & 0x0000ffff;
3588
3589 /* The rest of the cqe's will be marked as flushed */
3590 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] =
3591 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) |
3592 NES_IWARP_CQE_MINOR_FLUSH);
3593 } else
3594 entry->status = IB_WC_WR_FLUSH_ERR;
3c2d774c
GS		 3595 }
3596
3597 entry->qp = &nesqp->ibqp;
3598 entry->src_qp = nesqp->hwqp.qp_id;
3599
3600 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) {
3601 if (nesqp->skip_lsmm) {
3602 nesqp->skip_lsmm = 0;
5ee21fe0 3603 nesqp->hwqp.sq_tail++;
3c2d774c
GS		 3604 }
3605
3606 /* Working on a SQ Completion*/
6eed5e7c 3607 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c 3608 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) |
6eed5e7c 3609 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c 3610 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX])));
6eed5e7c 3611 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c
GS		 3612 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]);
3613
6eed5e7c 3614 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c
GS		 3615 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) {
3616 case NES_IWARP_SQ_OP_RDMAW:
3617 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n");
3618 entry->opcode = IB_WC_RDMA_WRITE;
3619 break;
3620 case NES_IWARP_SQ_OP_RDMAR:
3621 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n");
3622 entry->opcode = IB_WC_RDMA_READ;
6eed5e7c 3623 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index].
3c2d774c
GS		 3624 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]);
3625 break;
3626 case NES_IWARP_SQ_OP_SENDINV:
3627 case NES_IWARP_SQ_OP_SENDSEINV:
3628 case NES_IWARP_SQ_OP_SEND:
3629 case NES_IWARP_SQ_OP_SENDSE:
3630 nes_debug(NES_DBG_CQ, "Operation = Send.\n");
3631 entry->opcode = IB_WC_SEND;
3632 break;
649fe4ae 3633 case NES_IWARP_SQ_OP_LOCINV:
4a4b03f4 3634 entry->opcode = IB_WC_LOCAL_INV;
649fe4ae 3635 break;
e293a26f 3636 case NES_IWARP_SQ_OP_FAST_REG:
13d3e895 3637 entry->opcode = IB_WC_REG_MR;
e293a26f 3638 break;
3c2d774c 3639 }
6eed5e7c
DW		 3640
3641 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1);
3642 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) {
3643 move_cq_head = 0;
3644 wq_tail = nesqp->hwqp.sq_tail;
3645 }
3c2d774c
GS		 3646 } else {
3647 /* Working on a RQ Completion*/
3c2d774c 3648 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]);
6eed5e7c
DW		 3649 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) |
3650 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32);
3c2d774c 3651 entry->opcode = IB_WC_RECV;
6eed5e7c
DW		 3652
3653 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1);
3654 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) {
3655 move_cq_head = 0;
3656 wq_tail = nesqp->hwqp.rq_tail;
3657 }
3c2d774c 3658 }
3c2d774c 3659
5ee21fe0 3660 entry->wr_id = wrid;
3c2d774c 3661 entry++;
5ee21fe0
DW		 3662 cqe_count++;
3663 }
3664
6eed5e7c
DW		 3665 if (move_cq_head) {
3666 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0;
3667 if (++head >= cq_size)
3668 head = 0;
3669 nescq->polled_completions++;
5ee21fe0 3670
6eed5e7c
DW		 3671 if ((nescq->polled_completions > (cq_size / 2)) ||
3672 (nescq->polled_completions == 255)) {
3673 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes"
5ee21fe0
DW		 3674 " are pending %u of %u.\n",
3675 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size);
6eed5e7c 3676 nes_write32(nesdev->regs+NES_CQE_ALLOC,
5ee21fe0 3677 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
6eed5e7c
DW		 3678 nescq->polled_completions = 0;
3679 }
3680 } else {
3681 /* Update the wqe index and set status to flush */
3682 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]);
3683 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail;
3684 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] =
3685 cpu_to_le32(wqe_index);
3686 move_cq_head = 1; /* ready for next pass */
5ee21fe0 3687 }
3c2d774c
GS		 3688 }
3689
3690 if (nescq->polled_completions) {
3691 nes_write32(nesdev->regs+NES_CQE_ALLOC,
3692 nescq->hw_cq.cq_number | (nescq->polled_completions << 16));
3693 nescq->polled_completions = 0;
3694 }
3695
3696 nescq->hw_cq.cq_head = head;
3697 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n",
3698 cqe_count, nescq->hw_cq.cq_number);
3699
5880ff19 3700 spin_unlock_irqrestore(&nescq->lock, flags);
3c2d774c
GS		 3701
3702 return cqe_count;
3703}
3704
3705
3706/**
3707 * nes_req_notify_cq
3708 */
3709static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags)
3710 {
3711 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device);
3712 struct nes_device *nesdev = nesvnic->nesdev;
3713 struct nes_cq *nescq = to_nescq(ibcq);
3714 u32 cq_arm;
3715
3716 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n",
3717 nescq->hw_cq.cq_number);
3718
3719 cq_arm = nescq->hw_cq.cq_number;
3720 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP)
3721 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT;
3722 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
3723 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE;
3724 else
3725 return -EINVAL;
3726
3727 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm);
3728 nes_read32(nesdev->regs+NES_CQE_ALLOC);
3729
3730 return 0;
3731}
3732
7738613e
IW		 3733static int nes_port_immutable(struct ib_device *ibdev, u8 port_num,
3734 struct ib_port_immutable *immutable)
3735{
3736 struct ib_port_attr attr;
3737 int err;
3738
3739 err = nes_query_port(ibdev, port_num, &attr);
3740 if (err)
3741 return err;
3742
3743 immutable->pkey_tbl_len = attr.pkey_tbl_len;
3744 immutable->gid_tbl_len = attr.gid_tbl_len;
f9b22e35 3745 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
7738613e
IW		 3746
3747 return 0;
3748}
3c2d774c
GS		 3749
3750/**
3751 * nes_init_ofa_device
3752 */
3753struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
3754{
3755 struct nes_ib_device *nesibdev;
3756 struct nes_vnic *nesvnic = netdev_priv(netdev);
3757 struct nes_device *nesdev = nesvnic->nesdev;
3758
3759 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
3760 if (nesibdev == NULL) {
3761 return NULL;
3762 }
3763 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX);
3764 nesibdev->ibdev.owner = THIS_MODULE;
3765
3766 nesibdev->ibdev.node_type = RDMA_NODE_RNIC;
3767 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid));
3768 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6);
3769
3770 nesibdev->ibdev.uverbs_cmd_mask =
3771 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
3772 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
3773 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
3774 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
3775 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
3776 (1ull << IB_USER_VERBS_CMD_REG_MR) |
3777 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
3778 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
3779 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
3780 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
3781 (1ull << IB_USER_VERBS_CMD_CREATE_AH) |
3782 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) |
3783 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
3784 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
3785 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
3786 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
3787 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
3788 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) |
3789 (1ull << IB_USER_VERBS_CMD_BIND_MW) |
3790 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) |
3791 (1ull << IB_USER_VERBS_CMD_POST_RECV) |
3792 (1ull << IB_USER_VERBS_CMD_POST_SEND);
3793
3794 nesibdev->ibdev.phys_port_cnt = 1;
3795 nesibdev->ibdev.num_comp_vectors = 1;
3796 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev;
f4e91eb4 3797 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev;
3c2d774c
GS		 3798 nesibdev->ibdev.query_device = nes_query_device;
3799 nesibdev->ibdev.query_port = nes_query_port;
3c2d774c
GS		 3800 nesibdev->ibdev.query_pkey = nes_query_pkey;
3801 nesibdev->ibdev.query_gid = nes_query_gid;
3802 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext;
3803 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext;
3804 nesibdev->ibdev.mmap = nes_mmap;
3805 nesibdev->ibdev.alloc_pd = nes_alloc_pd;
3806 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd;
3807 nesibdev->ibdev.create_ah = nes_create_ah;
3808 nesibdev->ibdev.destroy_ah = nes_destroy_ah;
3809 nesibdev->ibdev.create_qp = nes_create_qp;
3810 nesibdev->ibdev.modify_qp = nes_modify_qp;
3811 nesibdev->ibdev.query_qp = nes_query_qp;
3812 nesibdev->ibdev.destroy_qp = nes_destroy_qp;
3813 nesibdev->ibdev.create_cq = nes_create_cq;
3814 nesibdev->ibdev.destroy_cq = nes_destroy_cq;
3815 nesibdev->ibdev.poll_cq = nes_poll_cq;
3816 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr;
3c2d774c
GS		 3817 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr;
3818 nesibdev->ibdev.dereg_mr = nes_dereg_mr;
3819 nesibdev->ibdev.alloc_mw = nes_alloc_mw;
3820 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
3c2d774c 3821
e02e4d55 3822 nesibdev->ibdev.alloc_mr = nes_alloc_mr;
0ba24dd3 3823 nesibdev->ibdev.map_mr_sg = nes_map_mr_sg;
3c2d774c
GS		 3824
3825 nesibdev->ibdev.attach_mcast = nes_multicast_attach;
3826 nesibdev->ibdev.detach_mcast = nes_multicast_detach;
3827 nesibdev->ibdev.process_mad = nes_process_mad;
3828
3829 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq;
3830 nesibdev->ibdev.post_send = nes_post_send;
3831 nesibdev->ibdev.post_recv = nes_post_recv;
3832
3833 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL);
3834 if (nesibdev->ibdev.iwcm == NULL) {
3835 ib_dealloc_device(&nesibdev->ibdev);
3836 return NULL;
3837 }
3838 nesibdev->ibdev.iwcm->add_ref = nes_add_ref;
3839 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref;
3840 nesibdev->ibdev.iwcm->get_qp = nes_get_qp;
3841 nesibdev->ibdev.iwcm->connect = nes_connect;
3842 nesibdev->ibdev.iwcm->accept = nes_accept;
3843 nesibdev->ibdev.iwcm->reject = nes_reject;
3844 nesibdev->ibdev.iwcm->create_listen = nes_create_listen;
3845 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen;
7738613e 3846 nesibdev->ibdev.get_port_immutable = nes_port_immutable;
3c2d774c
GS		 3847
3848 return nesibdev;
3849}
3850
ea623455
MS		 3851
3852/**
3853 * nes_handle_delayed_event
3854 */
3855static void nes_handle_delayed_event(unsigned long data)
3856{
3857 struct nes_vnic *nesvnic = (void *) data;
3858
3859 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) {
3860 struct ib_event event;
3861
3862 event.device = &nesvnic->nesibdev->ibdev;
3863 if (!event.device)
3864 goto stop_timer;
3865 event.event = nesvnic->delayed_event;
3866 event.element.port_num = nesvnic->logical_port + 1;
3867 ib_dispatch_event(&event);
3868 }
3869
3870stop_timer:
3871 nesvnic->event_timer.function = NULL;
3872}
3873
3874
cd6860eb
FL		 3875void nes_port_ibevent(struct nes_vnic *nesvnic)
3876{
3877 struct nes_ib_device *nesibdev = nesvnic->nesibdev;
3878 struct nes_device *nesdev = nesvnic->nesdev;
3879 struct ib_event event;
3880 event.device = &nesibdev->ibdev;
3881 event.element.port_num = nesvnic->logical_port + 1;
3882 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
ea623455
MS		 3883
3884 if (!nesvnic->event_timer.function) {
3885 ib_dispatch_event(&event);
3886 nesvnic->last_dispatched_event = event.event;
3887 nesvnic->event_timer.function = nes_handle_delayed_event;
3888 nesvnic->event_timer.data = (unsigned long) nesvnic;
3889 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY;
3890 add_timer(&nesvnic->event_timer);
3891 } else {
3892 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY);
3893 }
3894 nesvnic->delayed_event = event.event;
cd6860eb
FL		 3895}
3896
3c2d774c
GS		 3897
3898/**
3899 * nes_destroy_ofa_device
3900 */
3901void nes_destroy_ofa_device(struct nes_ib_device *nesibdev)
3902{
3903 if (nesibdev == NULL)
3904 return;
3905
3906 nes_unregister_ofa_device(nesibdev);
3907
3908 kfree(nesibdev->ibdev.iwcm);
3909 ib_dealloc_device(&nesibdev->ibdev);
3910}
3911
3912
3913/**
3914 * nes_register_ofa_device
3915 */
3916int nes_register_ofa_device(struct nes_ib_device *nesibdev)
3917{
3918 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3919 struct nes_device *nesdev = nesvnic->nesdev;
3920 struct nes_adapter *nesadapter = nesdev->nesadapter;
3921 int i, ret;
3922
9a6edb60 3923 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL);
3c2d774c
GS		 3924 if (ret) {
3925 return ret;
3926 }
3927
3928 /* Get the resources allocated to this device */
3929 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count;
3930 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count;
3931 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count;
3932 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count;
3933
f4e91eb4
TJ		 3934 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3935 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3c2d774c
GS		 3936 if (ret) {
3937 while (i > 0) {
3938 i--;
f4e91eb4
TJ		 3939 device_remove_file(&nesibdev->ibdev.dev,
3940 nes_dev_attributes[i]);
3c2d774c
GS		 3941 }
3942 ib_unregister_device(&nesibdev->ibdev);
3943 return ret;
3944 }
3945 }
3946
3947 nesvnic->of_device_registered = 1;
3948
3949 return 0;
3950}
3951
3952
3953/**
3954 * nes_unregister_ofa_device
3955 */
1a855fbf 3956static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev)
3c2d774c
GS		 3957{
3958 struct nes_vnic *nesvnic = nesibdev->nesvnic;
3959 int i;
3960
f4e91eb4
TJ		 3961 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) {
3962 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]);
3c2d774c
GS		 3963 }
3964
3965 if (nesvnic->of_device_registered) {
3966 ib_unregister_device(&nesibdev->ibdev);
3967 }
3968
3969 nesvnic->of_device_registered = 0;
3970}
Linux kernel - Deliverables
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