nes_verbs.c revision 75742c630ed552ad963948c9f3e596e96eed7a9f
1/* 2 * Copyright (c) 2006 - 2009 Intel-NE, Inc. All rights reserved. 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> 38#include <asm/byteorder.h> 39 40#include <rdma/ib_verbs.h> 41#include <rdma/iw_cm.h> 42#include <rdma/ib_user_verbs.h> 43 44#include "nes.h" 45 46#include <rdma/ib_umem.h> 47 48atomic_t mod_qp_timouts; 49atomic_t qps_created; 50atomic_t sw_qps_destroyed; 51 52static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev); 53 54/** 55 * nes_alloc_mw 56 */ 57static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) { 58 struct nes_pd *nespd = to_nespd(ibpd); 59 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); 60 struct nes_device *nesdev = nesvnic->nesdev; 61 struct nes_adapter *nesadapter = nesdev->nesadapter; 62 struct nes_cqp_request *cqp_request; 63 struct nes_mr *nesmr; 64 struct ib_mw *ibmw; 65 struct nes_hw_cqp_wqe *cqp_wqe; 66 int ret; 67 u32 stag; 68 u32 stag_index = 0; 69 u32 next_stag_index = 0; 70 u32 driver_key = 0; 71 u8 stag_key = 0; 72 73 get_random_bytes(&next_stag_index, sizeof(next_stag_index)); 74 stag_key = (u8)next_stag_index; 75 76 driver_key = 0; 77 78 next_stag_index >>= 8; 79 next_stag_index %= nesadapter->max_mr; 80 81 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, 82 nesadapter->max_mr, &stag_index, &next_stag_index); 83 if (ret) { 84 return ERR_PTR(ret); 85 } 86 87 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); 88 if (!nesmr) { 89 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 90 return ERR_PTR(-ENOMEM); 91 } 92 93 stag = stag_index << 8; 94 stag |= driver_key; 95 stag += (u32)stag_key; 96 97 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n", 98 stag, stag_index); 99 100 /* Register the region with the adapter */ 101 cqp_request = nes_get_cqp_request(nesdev); 102 if (cqp_request == NULL) { 103 kfree(nesmr); 104 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 105 return ERR_PTR(-ENOMEM); 106 } 107 108 cqp_request->waiting = 1; 109 cqp_wqe = &cqp_request->cqp_wqe; 110 111 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = 112 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ | 113 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO | 114 NES_CQP_STAG_REM_ACC_EN); 115 116 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 117 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff)); 118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag); 119 120 atomic_set(&cqp_request->refcount, 2); 121 nes_post_cqp_request(nesdev, cqp_request); 122 123 /* Wait for CQP */ 124 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0), 125 NES_EVENT_TIMEOUT); 126 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u," 127 " CQP Major:Minor codes = 0x%04X:0x%04X.\n", 128 stag, ret, cqp_request->major_code, cqp_request->minor_code); 129 if ((!ret) || (cqp_request->major_code)) { 130 nes_put_cqp_request(nesdev, cqp_request); 131 kfree(nesmr); 132 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 133 if (!ret) { 134 return ERR_PTR(-ETIME); 135 } else { 136 return ERR_PTR(-ENOMEM); 137 } 138 } 139 nes_put_cqp_request(nesdev, cqp_request); 140 141 nesmr->ibmw.rkey = stag; 142 nesmr->mode = IWNES_MEMREG_TYPE_MW; 143 ibmw = &nesmr->ibmw; 144 nesmr->pbl_4k = 0; 145 nesmr->pbls_used = 0; 146 147 return ibmw; 148} 149 150 151/** 152 * nes_dealloc_mw 153 */ 154static int nes_dealloc_mw(struct ib_mw *ibmw) 155{ 156 struct nes_mr *nesmr = to_nesmw(ibmw); 157 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device); 158 struct nes_device *nesdev = nesvnic->nesdev; 159 struct nes_adapter *nesadapter = nesdev->nesadapter; 160 struct nes_hw_cqp_wqe *cqp_wqe; 161 struct nes_cqp_request *cqp_request; 162 int err = 0; 163 int ret; 164 165 /* Deallocate the window with the adapter */ 166 cqp_request = nes_get_cqp_request(nesdev); 167 if (cqp_request == NULL) { 168 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); 169 return -ENOMEM; 170 } 171 cqp_request->waiting = 1; 172 cqp_wqe = &cqp_request->cqp_wqe; 173 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 174 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG); 175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey); 176 177 atomic_set(&cqp_request->refcount, 2); 178 nes_post_cqp_request(nesdev, cqp_request); 179 180 /* Wait for CQP */ 181 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n", 182 ibmw->rkey); 183 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), 184 NES_EVENT_TIMEOUT); 185 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u," 186 " CQP Major:Minor codes = 0x%04X:0x%04X.\n", 187 ret, cqp_request->major_code, cqp_request->minor_code); 188 if (!ret) 189 err = -ETIME; 190 else if (cqp_request->major_code) 191 err = -EIO; 192 193 nes_put_cqp_request(nesdev, cqp_request); 194 195 nes_free_resource(nesadapter, nesadapter->allocated_mrs, 196 (ibmw->rkey & 0x0fffff00) >> 8); 197 kfree(nesmr); 198 199 return err; 200} 201 202 203/** 204 * nes_bind_mw 205 */ 206static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw, 207 struct ib_mw_bind *ibmw_bind) 208{ 209 u64 u64temp; 210 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); 211 struct nes_device *nesdev = nesvnic->nesdev; 212 /* struct nes_mr *nesmr = to_nesmw(ibmw); */ 213 struct nes_qp *nesqp = to_nesqp(ibqp); 214 struct nes_hw_qp_wqe *wqe; 215 unsigned long flags = 0; 216 u32 head; 217 u32 wqe_misc = 0; 218 u32 qsize; 219 220 if (nesqp->ibqp_state > IB_QPS_RTS) 221 return -EINVAL; 222 223 spin_lock_irqsave(&nesqp->lock, flags); 224 225 head = nesqp->hwqp.sq_head; 226 qsize = nesqp->hwqp.sq_tail; 227 228 /* Check for SQ overflow */ 229 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) { 230 spin_unlock_irqrestore(&nesqp->lock, flags); 231 return -EINVAL; 232 } 233 234 wqe = &nesqp->hwqp.sq_vbase[head]; 235 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */ 236 nes_fill_init_qp_wqe(wqe, nesqp, head); 237 u64temp = ibmw_bind->wr_id; 238 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp); 239 wqe_misc = NES_IWARP_SQ_OP_BIND; 240 241 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE; 242 243 if (ibmw_bind->send_flags & IB_SEND_SIGNALED) 244 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL; 245 246 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) { 247 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE; 248 } 249 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) { 250 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ; 251 } 252 253 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc); 254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey); 255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey); 256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX, 257 ibmw_bind->length); 258 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0; 259 u64temp = (u64)ibmw_bind->addr; 260 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp); 261 262 head++; 263 if (head >= qsize) 264 head = 0; 265 266 nesqp->hwqp.sq_head = head; 267 barrier(); 268 269 nes_write32(nesdev->regs+NES_WQE_ALLOC, 270 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); 271 272 spin_unlock_irqrestore(&nesqp->lock, flags); 273 274 return 0; 275} 276 277 278/* 279 * nes_alloc_fast_mr 280 */ 281static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd, 282 u32 stag, u32 page_count) 283{ 284 struct nes_hw_cqp_wqe *cqp_wqe; 285 struct nes_cqp_request *cqp_request; 286 unsigned long flags; 287 int ret; 288 struct nes_adapter *nesadapter = nesdev->nesadapter; 289 u32 opcode = 0; 290 u16 major_code; 291 u64 region_length = page_count * PAGE_SIZE; 292 293 294 cqp_request = nes_get_cqp_request(nesdev); 295 if (cqp_request == NULL) { 296 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); 297 return -ENOMEM; 298 } 299 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, " 300 "region_length = %llu\n", 301 page_count, region_length); 302 cqp_request->waiting = 1; 303 cqp_wqe = &cqp_request->cqp_wqe; 304 305 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 306 if (nesadapter->free_4kpbl > 0) { 307 nesadapter->free_4kpbl--; 308 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 309 } else { 310 /* No 4kpbl's available: */ 311 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 312 nes_debug(NES_DBG_MR, "Out of Pbls\n"); 313 nes_free_cqp_request(nesdev, cqp_request); 314 return -ENOMEM; 315 } 316 317 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR | 318 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO | 319 NES_CQP_STAG_REM_ACC_EN; 320 /* 321 * The current OFED API does not support the zero based TO option. 322 * If added then need to changed the NES_CQP_STAG_VA* option. Also, 323 * the API does not support that ability to have the MR set for local 324 * access only when created and not allow the SQ op to override. Given 325 * this the remote enable must be set here. 326 */ 327 328 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 329 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); 330 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1); 331 332 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] = 333 cpu_to_le32((u32)(region_length >> 8) & 0xff000000); 334 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |= 335 cpu_to_le32(nespd->pd_id & 0x00007fff); 336 337 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag); 338 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0); 339 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0); 340 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0); 341 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8)); 342 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE); 343 barrier(); 344 345 atomic_set(&cqp_request->refcount, 2); 346 nes_post_cqp_request(nesdev, cqp_request); 347 348 /* Wait for CQP */ 349 ret = wait_event_timeout(cqp_request->waitq, 350 (0 != cqp_request->request_done), 351 NES_EVENT_TIMEOUT); 352 353 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, " 354 "wait_event_timeout ret = %u, CQP Major:Minor codes = " 355 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code, 356 cqp_request->minor_code); 357 major_code = cqp_request->major_code; 358 nes_put_cqp_request(nesdev, cqp_request); 359 360 if (!ret || major_code) { 361 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 362 nesadapter->free_4kpbl++; 363 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 364 } 365 366 if (!ret) 367 return -ETIME; 368 else if (major_code) 369 return -EIO; 370 return 0; 371} 372 373/* 374 * nes_alloc_fast_reg_mr 375 */ 376struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int max_page_list_len) 377{ 378 struct nes_pd *nespd = to_nespd(ibpd); 379 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); 380 struct nes_device *nesdev = nesvnic->nesdev; 381 struct nes_adapter *nesadapter = nesdev->nesadapter; 382 383 u32 next_stag_index; 384 u8 stag_key = 0; 385 u32 driver_key = 0; 386 int err = 0; 387 u32 stag_index = 0; 388 struct nes_mr *nesmr; 389 u32 stag; 390 int ret; 391 struct ib_mr *ibmr; 392/* 393 * Note: Set to always use a fixed length single page entry PBL. This is to allow 394 * for the fast_reg_mr operation to always know the size of the PBL. 395 */ 396 if (max_page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) 397 return ERR_PTR(-E2BIG); 398 399 get_random_bytes(&next_stag_index, sizeof(next_stag_index)); 400 stag_key = (u8)next_stag_index; 401 next_stag_index >>= 8; 402 next_stag_index %= nesadapter->max_mr; 403 404 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, 405 nesadapter->max_mr, &stag_index, 406 &next_stag_index); 407 if (err) 408 return ERR_PTR(err); 409 410 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); 411 if (!nesmr) { 412 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 413 return ERR_PTR(-ENOMEM); 414 } 415 416 stag = stag_index << 8; 417 stag |= driver_key; 418 stag += (u32)stag_key; 419 420 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n", 421 stag, stag_index); 422 423 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_page_list_len); 424 425 if (ret == 0) { 426 nesmr->ibmr.rkey = stag; 427 nesmr->ibmr.lkey = stag; 428 nesmr->mode = IWNES_MEMREG_TYPE_FMEM; 429 ibmr = &nesmr->ibmr; 430 } else { 431 kfree(nesmr); 432 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 433 ibmr = ERR_PTR(-ENOMEM); 434 } 435 return ibmr; 436} 437 438/* 439 * nes_alloc_fast_reg_page_list 440 */ 441static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list( 442 struct ib_device *ibdev, 443 int page_list_len) 444{ 445 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 446 struct nes_device *nesdev = nesvnic->nesdev; 447 struct ib_fast_reg_page_list *pifrpl; 448 struct nes_ib_fast_reg_page_list *pnesfrpl; 449 450 if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) 451 return ERR_PTR(-E2BIG); 452 /* 453 * Allocate the ib_fast_reg_page_list structure, the 454 * nes_fast_bpl structure, and the PLB table. 455 */ 456 pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) + 457 page_list_len * sizeof(u64), GFP_KERNEL); 458 459 if (!pnesfrpl) 460 return ERR_PTR(-ENOMEM); 461 462 pifrpl = &pnesfrpl->ibfrpl; 463 pifrpl->page_list = &pnesfrpl->pbl; 464 pifrpl->max_page_list_len = page_list_len; 465 /* 466 * Allocate the WQE PBL 467 */ 468 pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev, 469 page_list_len * sizeof(u64), 470 &pnesfrpl->nes_wqe_pbl.paddr); 471 472 if (!pnesfrpl->nes_wqe_pbl.kva) { 473 kfree(pnesfrpl); 474 return ERR_PTR(-ENOMEM); 475 } 476 nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, " 477 "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, " 478 "pbl.paddr= %p\n", pnesfrpl, &pnesfrpl->ibfrpl, 479 pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva, 480 (void *)pnesfrpl->nes_wqe_pbl.paddr); 481 482 return pifrpl; 483} 484 485/* 486 * nes_free_fast_reg_page_list 487 */ 488static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl) 489{ 490 struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device); 491 struct nes_device *nesdev = nesvnic->nesdev; 492 struct nes_ib_fast_reg_page_list *pnesfrpl; 493 494 pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl); 495 /* 496 * Free the WQE PBL. 497 */ 498 pci_free_consistent(nesdev->pcidev, 499 pifrpl->max_page_list_len * sizeof(u64), 500 pnesfrpl->nes_wqe_pbl.kva, 501 pnesfrpl->nes_wqe_pbl.paddr); 502 /* 503 * Free the PBL structure 504 */ 505 kfree(pnesfrpl); 506} 507 508/** 509 * nes_query_device 510 */ 511static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props) 512{ 513 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 514 struct nes_device *nesdev = nesvnic->nesdev; 515 struct nes_ib_device *nesibdev = nesvnic->nesibdev; 516 517 memset(props, 0, sizeof(*props)); 518 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6); 519 520 props->fw_ver = nesdev->nesadapter->fw_ver; 521 props->device_cap_flags = nesdev->nesadapter->device_cap_flags; 522 props->vendor_id = nesdev->nesadapter->vendor_id; 523 props->vendor_part_id = nesdev->nesadapter->vendor_part_id; 524 props->hw_ver = nesdev->nesadapter->hw_rev; 525 props->max_mr_size = 0x80000000; 526 props->max_qp = nesibdev->max_qp; 527 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2; 528 props->max_sge = nesdev->nesadapter->max_sge; 529 props->max_cq = nesibdev->max_cq; 530 props->max_cqe = nesdev->nesadapter->max_cqe - 1; 531 props->max_mr = nesibdev->max_mr; 532 props->max_mw = nesibdev->max_mr; 533 props->max_pd = nesibdev->max_pd; 534 props->max_sge_rd = 1; 535 switch (nesdev->nesadapter->max_irrq_wr) { 536 case 0: 537 props->max_qp_rd_atom = 1; 538 break; 539 case 1: 540 props->max_qp_rd_atom = 4; 541 break; 542 case 2: 543 props->max_qp_rd_atom = 16; 544 break; 545 case 3: 546 props->max_qp_rd_atom = 32; 547 break; 548 default: 549 props->max_qp_rd_atom = 0; 550 } 551 props->max_qp_init_rd_atom = props->max_qp_rd_atom; 552 props->atomic_cap = IB_ATOMIC_NONE; 553 props->max_map_per_fmr = 1; 554 555 return 0; 556} 557 558 559/** 560 * nes_query_port 561 */ 562static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) 563{ 564 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 565 struct net_device *netdev = nesvnic->netdev; 566 567 memset(props, 0, sizeof(*props)); 568 569 props->max_mtu = IB_MTU_4096; 570 571 if (netdev->mtu >= 4096) 572 props->active_mtu = IB_MTU_4096; 573 else if (netdev->mtu >= 2048) 574 props->active_mtu = IB_MTU_2048; 575 else if (netdev->mtu >= 1024) 576 props->active_mtu = IB_MTU_1024; 577 else if (netdev->mtu >= 512) 578 props->active_mtu = IB_MTU_512; 579 else 580 props->active_mtu = IB_MTU_256; 581 582 props->lid = 1; 583 props->lmc = 0; 584 props->sm_lid = 0; 585 props->sm_sl = 0; 586 if (nesvnic->linkup) 587 props->state = IB_PORT_ACTIVE; 588 else 589 props->state = IB_PORT_DOWN; 590 props->phys_state = 0; 591 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP | 592 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 593 props->gid_tbl_len = 1; 594 props->pkey_tbl_len = 1; 595 props->qkey_viol_cntr = 0; 596 props->active_width = IB_WIDTH_4X; 597 props->active_speed = 1; 598 props->max_msg_sz = 0x80000000; 599 600 return 0; 601} 602 603 604/** 605 * nes_modify_port 606 */ 607static int nes_modify_port(struct ib_device *ibdev, u8 port, 608 int port_modify_mask, struct ib_port_modify *props) 609{ 610 return 0; 611} 612 613 614/** 615 * nes_query_pkey 616 */ 617static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 618{ 619 *pkey = 0; 620 return 0; 621} 622 623 624/** 625 * nes_query_gid 626 */ 627static int nes_query_gid(struct ib_device *ibdev, u8 port, 628 int index, union ib_gid *gid) 629{ 630 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 631 632 memset(&(gid->raw[0]), 0, sizeof(gid->raw)); 633 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6); 634 635 return 0; 636} 637 638 639/** 640 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track 641 * of all objects associated with a particular user-mode client. 642 */ 643static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev, 644 struct ib_udata *udata) 645{ 646 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 647 struct nes_device *nesdev = nesvnic->nesdev; 648 struct nes_adapter *nesadapter = nesdev->nesadapter; 649 struct nes_alloc_ucontext_req req; 650 struct nes_alloc_ucontext_resp uresp; 651 struct nes_ucontext *nes_ucontext; 652 struct nes_ib_device *nesibdev = nesvnic->nesibdev; 653 654 655 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) { 656 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n"); 657 return ERR_PTR(-EINVAL); 658 } 659 660 if (req.userspace_ver != NES_ABI_USERSPACE_VER) { 661 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n", 662 req.userspace_ver, NES_ABI_USERSPACE_VER); 663 return ERR_PTR(-EINVAL); 664 } 665 666 667 memset(&uresp, 0, sizeof uresp); 668 669 uresp.max_qps = nesibdev->max_qp; 670 uresp.max_pds = nesibdev->max_pd; 671 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2; 672 uresp.virtwq = nesadapter->virtwq; 673 uresp.kernel_ver = NES_ABI_KERNEL_VER; 674 675 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL); 676 if (!nes_ucontext) 677 return ERR_PTR(-ENOMEM); 678 679 nes_ucontext->nesdev = nesdev; 680 nes_ucontext->mmap_wq_offset = uresp.max_pds; 681 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset + 682 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) / 683 PAGE_SIZE; 684 685 686 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { 687 kfree(nes_ucontext); 688 return ERR_PTR(-EFAULT); 689 } 690 691 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list); 692 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list); 693 atomic_set(&nes_ucontext->usecnt, 1); 694 return &nes_ucontext->ibucontext; 695} 696 697 698/** 699 * nes_dealloc_ucontext 700 */ 701static int nes_dealloc_ucontext(struct ib_ucontext *context) 702{ 703 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */ 704 /* struct nes_device *nesdev = nesvnic->nesdev; */ 705 struct nes_ucontext *nes_ucontext = to_nesucontext(context); 706 707 if (!atomic_dec_and_test(&nes_ucontext->usecnt)) 708 return 0; 709 kfree(nes_ucontext); 710 return 0; 711} 712 713 714/** 715 * nes_mmap 716 */ 717static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 718{ 719 unsigned long index; 720 struct nes_vnic *nesvnic = to_nesvnic(context->device); 721 struct nes_device *nesdev = nesvnic->nesdev; 722 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */ 723 struct nes_ucontext *nes_ucontext; 724 struct nes_qp *nesqp; 725 726 nes_ucontext = to_nesucontext(context); 727 728 729 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) { 730 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE; 731 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) + 732 PAGE_SIZE-1) & (~(PAGE_SIZE-1)); 733 if (!test_bit(index, nes_ucontext->allocated_wqs)) { 734 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index); 735 return -EFAULT; 736 } 737 nesqp = nes_ucontext->mmap_nesqp[index]; 738 if (nesqp == NULL) { 739 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index); 740 return -EFAULT; 741 } 742 if (remap_pfn_range(vma, vma->vm_start, 743 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT, 744 vma->vm_end - vma->vm_start, 745 vma->vm_page_prot)) { 746 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n"); 747 return -EAGAIN; 748 } 749 vma->vm_private_data = nesqp; 750 return 0; 751 } else { 752 index = vma->vm_pgoff; 753 if (!test_bit(index, nes_ucontext->allocated_doorbells)) 754 return -EFAULT; 755 756 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 757 if (io_remap_pfn_range(vma, vma->vm_start, 758 (nesdev->doorbell_start + 759 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096)) 760 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot)) 761 return -EAGAIN; 762 vma->vm_private_data = nes_ucontext; 763 return 0; 764 } 765 766 return -ENOSYS; 767} 768 769 770/** 771 * nes_alloc_pd 772 */ 773static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev, 774 struct ib_ucontext *context, struct ib_udata *udata) 775{ 776 struct nes_pd *nespd; 777 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 778 struct nes_device *nesdev = nesvnic->nesdev; 779 struct nes_adapter *nesadapter = nesdev->nesadapter; 780 struct nes_ucontext *nesucontext; 781 struct nes_alloc_pd_resp uresp; 782 u32 pd_num = 0; 783 int err; 784 785 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n", 786 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context, 787 atomic_read(&nesvnic->netdev->refcnt)); 788 789 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds, 790 nesadapter->max_pd, &pd_num, &nesadapter->next_pd); 791 if (err) { 792 return ERR_PTR(err); 793 } 794 795 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL); 796 if (!nespd) { 797 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num); 798 return ERR_PTR(-ENOMEM); 799 } 800 801 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n", 802 nespd, nesvnic->nesibdev->ibdev.name); 803 804 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd; 805 806 if (context) { 807 nesucontext = to_nesucontext(context); 808 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells, 809 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db); 810 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n", 811 nespd->mmap_db_index, nespd->pd_id); 812 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) { 813 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n"); 814 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num); 815 kfree(nespd); 816 return ERR_PTR(-ENOMEM); 817 } 818 819 uresp.pd_id = nespd->pd_id; 820 uresp.mmap_db_index = nespd->mmap_db_index; 821 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) { 822 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num); 823 kfree(nespd); 824 return ERR_PTR(-EFAULT); 825 } 826 827 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells); 828 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id; 829 nesucontext->first_free_db = nespd->mmap_db_index + 1; 830 } 831 832 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd); 833 return &nespd->ibpd; 834} 835 836 837/** 838 * nes_dealloc_pd 839 */ 840static int nes_dealloc_pd(struct ib_pd *ibpd) 841{ 842 struct nes_ucontext *nesucontext; 843 struct nes_pd *nespd = to_nespd(ibpd); 844 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); 845 struct nes_device *nesdev = nesvnic->nesdev; 846 struct nes_adapter *nesadapter = nesdev->nesadapter; 847 848 if ((ibpd->uobject) && (ibpd->uobject->context)) { 849 nesucontext = to_nesucontext(ibpd->uobject->context); 850 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n", 851 nespd->mmap_db_index); 852 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells); 853 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0; 854 if (nesucontext->first_free_db > nespd->mmap_db_index) { 855 nesucontext->first_free_db = nespd->mmap_db_index; 856 } 857 } 858 859 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n", 860 nespd->pd_id, nespd); 861 nes_free_resource(nesadapter, nesadapter->allocated_pds, 862 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12)); 863 kfree(nespd); 864 865 return 0; 866} 867 868 869/** 870 * nes_create_ah 871 */ 872static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) 873{ 874 return ERR_PTR(-ENOSYS); 875} 876 877 878/** 879 * nes_destroy_ah 880 */ 881static int nes_destroy_ah(struct ib_ah *ah) 882{ 883 return -ENOSYS; 884} 885 886 887/** 888 * nes_get_encoded_size 889 */ 890static inline u8 nes_get_encoded_size(int *size) 891{ 892 u8 encoded_size = 0; 893 if (*size <= 32) { 894 *size = 32; 895 encoded_size = 1; 896 } else if (*size <= 128) { 897 *size = 128; 898 encoded_size = 2; 899 } else if (*size <= 512) { 900 *size = 512; 901 encoded_size = 3; 902 } 903 return (encoded_size); 904} 905 906 907 908/** 909 * nes_setup_virt_qp 910 */ 911static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl, 912 struct nes_vnic *nesvnic, int sq_size, int rq_size) 913{ 914 unsigned long flags; 915 void *mem; 916 __le64 *pbl = NULL; 917 __le64 *tpbl; 918 __le64 *pblbuffer; 919 struct nes_device *nesdev = nesvnic->nesdev; 920 struct nes_adapter *nesadapter = nesdev->nesadapter; 921 u32 pbl_entries; 922 u8 rq_pbl_entries; 923 u8 sq_pbl_entries; 924 925 pbl_entries = nespbl->pbl_size >> 3; 926 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n", 927 nespbl->pbl_size, pbl_entries, 928 (void *)nespbl->pbl_vbase, 929 (unsigned long) nespbl->pbl_pbase); 930 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */ 931 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */ 932 /* the first pbl to be fro the rq_vbase... */ 933 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12; 934 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12; 935 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32); 936 if (!nespbl->page) { 937 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n"); 938 kfree(nespbl); 939 return -ENOMEM; 940 } 941 942 nesqp->hwqp.sq_vbase = kmap(nespbl->page); 943 nesqp->page = nespbl->page; 944 if (!nesqp->hwqp.sq_vbase) { 945 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n"); 946 kfree(nespbl); 947 return -ENOMEM; 948 } 949 950 /* Now to get to sq.. we need to calculate how many */ 951 /* PBL entries were used by the rq.. */ 952 pbl += sq_pbl_entries; 953 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32); 954 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */ 955 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */ 956 957 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n", 958 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase, 959 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase); 960 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 961 if (!nesadapter->free_256pbl) { 962 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, 963 nespbl->pbl_pbase); 964 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 965 kunmap(nesqp->page); 966 kfree(nespbl); 967 return -ENOMEM; 968 } 969 nesadapter->free_256pbl--; 970 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 971 972 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase); 973 pblbuffer = nesqp->pbl_vbase; 974 if (!nesqp->pbl_vbase) { 975 /* memory allocated during nes_reg_user_mr() */ 976 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, 977 nespbl->pbl_pbase); 978 kfree(nespbl); 979 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 980 nesadapter->free_256pbl++; 981 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 982 kunmap(nesqp->page); 983 return -ENOMEM; 984 } 985 memset(nesqp->pbl_vbase, 0, 256); 986 /* fill in the page address in the pbl buffer.. */ 987 tpbl = pblbuffer + 16; 988 pbl = (__le64 *)nespbl->pbl_vbase; 989 while (sq_pbl_entries--) 990 *tpbl++ = *pbl++; 991 tpbl = pblbuffer; 992 while (rq_pbl_entries--) 993 *tpbl++ = *pbl++; 994 995 /* done with memory allocated during nes_reg_user_mr() */ 996 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, 997 nespbl->pbl_pbase); 998 kfree(nespbl); 999 1000 nesqp->qp_mem_size = 1001 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */ 1002 /* Round up to a multiple of a page */ 1003 nesqp->qp_mem_size += PAGE_SIZE - 1; 1004 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1); 1005 1006 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size, 1007 &nesqp->hwqp.q2_pbase); 1008 1009 if (!mem) { 1010 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase); 1011 nesqp->pbl_vbase = NULL; 1012 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1013 nesadapter->free_256pbl++; 1014 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1015 kunmap(nesqp->page); 1016 return -ENOMEM; 1017 } 1018 nesqp->hwqp.q2_vbase = mem; 1019 mem += 256; 1020 memset(nesqp->hwqp.q2_vbase, 0, 256); 1021 nesqp->nesqp_context = mem; 1022 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context)); 1023 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256; 1024 1025 return 0; 1026} 1027 1028 1029/** 1030 * nes_setup_mmap_qp 1031 */ 1032static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic, 1033 int sq_size, int rq_size) 1034{ 1035 void *mem; 1036 struct nes_device *nesdev = nesvnic->nesdev; 1037 1038 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) + 1039 (sizeof(struct nes_hw_qp_wqe) * rq_size) + 1040 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 1041 256; /* this is Q2 */ 1042 /* Round up to a multiple of a page */ 1043 nesqp->qp_mem_size += PAGE_SIZE - 1; 1044 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1); 1045 1046 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size, 1047 &nesqp->hwqp.sq_pbase); 1048 if (!mem) 1049 return -ENOMEM; 1050 nes_debug(NES_DBG_QP, "PCI consistent memory for " 1051 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n", 1052 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size); 1053 1054 memset(mem, 0, nesqp->qp_mem_size); 1055 1056 nesqp->hwqp.sq_vbase = mem; 1057 mem += sizeof(struct nes_hw_qp_wqe) * sq_size; 1058 1059 nesqp->hwqp.rq_vbase = mem; 1060 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase + 1061 sizeof(struct nes_hw_qp_wqe) * sq_size; 1062 mem += sizeof(struct nes_hw_qp_wqe) * rq_size; 1063 1064 nesqp->hwqp.q2_vbase = mem; 1065 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase + 1066 sizeof(struct nes_hw_qp_wqe) * rq_size; 1067 mem += 256; 1068 memset(nesqp->hwqp.q2_vbase, 0, 256); 1069 1070 nesqp->nesqp_context = mem; 1071 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256; 1072 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context)); 1073 return 0; 1074} 1075 1076 1077/** 1078 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory. 1079 */ 1080static inline void nes_free_qp_mem(struct nes_device *nesdev, 1081 struct nes_qp *nesqp, int virt_wqs) 1082{ 1083 unsigned long flags; 1084 struct nes_adapter *nesadapter = nesdev->nesadapter; 1085 if (!virt_wqs) { 1086 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, 1087 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase); 1088 }else { 1089 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1090 nesadapter->free_256pbl++; 1091 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1092 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase); 1093 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase ); 1094 nesqp->pbl_vbase = NULL; 1095 kunmap(nesqp->page); 1096 } 1097} 1098 1099 1100/** 1101 * nes_create_qp 1102 */ 1103static struct ib_qp *nes_create_qp(struct ib_pd *ibpd, 1104 struct ib_qp_init_attr *init_attr, struct ib_udata *udata) 1105{ 1106 u64 u64temp= 0; 1107 u64 u64nesqp = 0; 1108 struct nes_pd *nespd = to_nespd(ibpd); 1109 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); 1110 struct nes_device *nesdev = nesvnic->nesdev; 1111 struct nes_adapter *nesadapter = nesdev->nesadapter; 1112 struct nes_qp *nesqp; 1113 struct nes_cq *nescq; 1114 struct nes_ucontext *nes_ucontext; 1115 struct nes_hw_cqp_wqe *cqp_wqe; 1116 struct nes_cqp_request *cqp_request; 1117 struct nes_create_qp_req req; 1118 struct nes_create_qp_resp uresp; 1119 struct nes_pbl *nespbl = NULL; 1120 u32 qp_num = 0; 1121 u32 opcode = 0; 1122 /* u32 counter = 0; */ 1123 void *mem; 1124 unsigned long flags; 1125 int ret; 1126 int err; 1127 int virt_wqs = 0; 1128 int sq_size; 1129 int rq_size; 1130 u8 sq_encoded_size; 1131 u8 rq_encoded_size; 1132 /* int counter; */ 1133 1134 if (init_attr->create_flags) 1135 return ERR_PTR(-EINVAL); 1136 1137 atomic_inc(&qps_created); 1138 switch (init_attr->qp_type) { 1139 case IB_QPT_RC: 1140 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) { 1141 init_attr->cap.max_inline_data = 0; 1142 } else { 1143 init_attr->cap.max_inline_data = 64; 1144 } 1145 sq_size = init_attr->cap.max_send_wr; 1146 rq_size = init_attr->cap.max_recv_wr; 1147 1148 /* check if the encoded sizes are OK or not... */ 1149 sq_encoded_size = nes_get_encoded_size(&sq_size); 1150 rq_encoded_size = nes_get_encoded_size(&rq_size); 1151 1152 if ((!sq_encoded_size) || (!rq_encoded_size)) { 1153 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n", 1154 rq_size, sq_size); 1155 return ERR_PTR(-EINVAL); 1156 } 1157 1158 init_attr->cap.max_send_wr = sq_size -2; 1159 init_attr->cap.max_recv_wr = rq_size -1; 1160 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size); 1161 1162 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps, 1163 nesadapter->max_qp, &qp_num, &nesadapter->next_qp); 1164 if (ret) { 1165 return ERR_PTR(ret); 1166 } 1167 1168 /* Need 512 (actually now 1024) byte alignment on this structure */ 1169 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL); 1170 if (!mem) { 1171 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1172 nes_debug(NES_DBG_QP, "Unable to allocate QP\n"); 1173 return ERR_PTR(-ENOMEM); 1174 } 1175 u64nesqp = (unsigned long)mem; 1176 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1; 1177 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1; 1178 u64nesqp &= ~u64temp; 1179 nesqp = (struct nes_qp *)(unsigned long)u64nesqp; 1180 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n", 1181 nesqp, mem, NES_SW_CONTEXT_ALIGN); */ 1182 nesqp->allocated_buffer = mem; 1183 1184 if (udata) { 1185 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) { 1186 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1187 kfree(nesqp->allocated_buffer); 1188 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n"); 1189 return NULL; 1190 } 1191 if (req.user_wqe_buffers) { 1192 virt_wqs = 1; 1193 } 1194 if ((ibpd->uobject) && (ibpd->uobject->context)) { 1195 nesqp->user_mode = 1; 1196 nes_ucontext = to_nesucontext(ibpd->uobject->context); 1197 if (virt_wqs) { 1198 err = 1; 1199 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) { 1200 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) { 1201 list_del(&nespbl->list); 1202 err = 0; 1203 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n", 1204 nespbl, nespbl->user_base); 1205 break; 1206 } 1207 } 1208 if (err) { 1209 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n", 1210 (long long unsigned int)req.user_wqe_buffers); 1211 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1212 kfree(nesqp->allocated_buffer); 1213 return ERR_PTR(-EFAULT); 1214 } 1215 } 1216 1217 nes_ucontext = to_nesucontext(ibpd->uobject->context); 1218 nesqp->mmap_sq_db_index = 1219 find_next_zero_bit(nes_ucontext->allocated_wqs, 1220 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq); 1221 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n", 1222 nespd->mmap_db_index); */ 1223 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) { 1224 nes_debug(NES_DBG_QP, 1225 "db index > max user regions, failing create QP\n"); 1226 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1227 if (virt_wqs) { 1228 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, 1229 nespbl->pbl_pbase); 1230 kfree(nespbl); 1231 } 1232 kfree(nesqp->allocated_buffer); 1233 return ERR_PTR(-ENOMEM); 1234 } 1235 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs); 1236 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp; 1237 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1; 1238 } else { 1239 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1240 kfree(nesqp->allocated_buffer); 1241 return ERR_PTR(-EFAULT); 1242 } 1243 } 1244 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) : 1245 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size); 1246 if (err) { 1247 nes_debug(NES_DBG_QP, 1248 "error geting qp mem code = %d\n", err); 1249 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1250 kfree(nesqp->allocated_buffer); 1251 return ERR_PTR(-ENOMEM); 1252 } 1253 1254 nesqp->hwqp.sq_size = sq_size; 1255 nesqp->hwqp.sq_encoded_size = sq_encoded_size; 1256 nesqp->hwqp.sq_head = 1; 1257 nesqp->hwqp.rq_size = rq_size; 1258 nesqp->hwqp.rq_encoded_size = rq_encoded_size; 1259 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n", 1260 (void *)nesqp->nesqp_context_pbase); 1261 */ 1262 nesqp->hwqp.qp_id = qp_num; 1263 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id; 1264 nesqp->nespd = nespd; 1265 1266 nescq = to_nescq(init_attr->send_cq); 1267 nesqp->nesscq = nescq; 1268 nescq = to_nescq(init_attr->recv_cq); 1269 nesqp->nesrcq = nescq; 1270 1271 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 1272 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT); 1273 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size << 1274 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT); 1275 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size << 1276 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT); 1277 if (!udata) { 1278 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN); 1279 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN); 1280 } 1281 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number + 1282 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16)); 1283 u64temp = (u64)nesqp->hwqp.sq_pbase; 1284 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp); 1285 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); 1286 1287 1288 if (!virt_wqs) { 1289 u64temp = (u64)nesqp->hwqp.sq_pbase; 1290 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp); 1291 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); 1292 u64temp = (u64)nesqp->hwqp.rq_pbase; 1293 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp); 1294 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); 1295 } else { 1296 u64temp = (u64)nesqp->pbl_pbase; 1297 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp); 1298 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); 1299 } 1300 1301 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n", 1302 nesvnic->next_qp_nic_index, 1303 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */ 1304 spin_lock_irqsave(&nesdev->cqp.lock, flags); 1305 nesqp->nesqp_context->misc2 |= cpu_to_le32( 1306 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] << 1307 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT); 1308 nesvnic->next_qp_nic_index++; 1309 if ((nesvnic->next_qp_nic_index > 3) || 1310 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) { 1311 nesvnic->next_qp_nic_index = 0; 1312 } 1313 spin_unlock_irqrestore(&nesdev->cqp.lock, flags); 1314 1315 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16); 1316 u64temp = (u64)nesqp->hwqp.q2_pbase; 1317 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp); 1318 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32)); 1319 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp))); 1320 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp)))); 1321 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM | 1322 ((((u32)nesadapter->max_irrq_wr) << 1323 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK)); 1324 if (disable_mpa_crc) { 1325 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n"); 1326 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC); 1327 } 1328 1329 1330 /* Create the QP */ 1331 cqp_request = nes_get_cqp_request(nesdev); 1332 if (cqp_request == NULL) { 1333 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n"); 1334 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1335 nes_free_qp_mem(nesdev, nesqp,virt_wqs); 1336 kfree(nesqp->allocated_buffer); 1337 return ERR_PTR(-ENOMEM); 1338 } 1339 cqp_request->waiting = 1; 1340 cqp_wqe = &cqp_request->cqp_wqe; 1341 1342 if (!virt_wqs) { 1343 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | 1344 NES_CQP_QP_IWARP_STATE_IDLE; 1345 } else { 1346 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS | 1347 NES_CQP_QP_IWARP_STATE_IDLE; 1348 } 1349 opcode |= NES_CQP_QP_CQS_VALID; 1350 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 1351 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); 1352 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id); 1353 1354 u64temp = (u64)nesqp->nesqp_context_pbase; 1355 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp); 1356 1357 atomic_set(&cqp_request->refcount, 2); 1358 nes_post_cqp_request(nesdev, cqp_request); 1359 1360 /* Wait for CQP */ 1361 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n", 1362 nesqp->hwqp.qp_id); 1363 ret = wait_event_timeout(cqp_request->waitq, 1364 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT); 1365 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u," 1366 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u," 1367 " CQP Major:Minor codes = 0x%04X:0x%04X.\n", 1368 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail, 1369 cqp_request->major_code, cqp_request->minor_code); 1370 if ((!ret) || (cqp_request->major_code)) { 1371 nes_put_cqp_request(nesdev, cqp_request); 1372 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1373 nes_free_qp_mem(nesdev, nesqp,virt_wqs); 1374 kfree(nesqp->allocated_buffer); 1375 if (!ret) { 1376 return ERR_PTR(-ETIME); 1377 } else { 1378 return ERR_PTR(-EIO); 1379 } 1380 } 1381 1382 nes_put_cqp_request(nesdev, cqp_request); 1383 1384 if (ibpd->uobject) { 1385 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index; 1386 uresp.actual_sq_size = sq_size; 1387 uresp.actual_rq_size = rq_size; 1388 uresp.qp_id = nesqp->hwqp.qp_id; 1389 uresp.nes_drv_opt = nes_drv_opt; 1390 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { 1391 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1392 nes_free_qp_mem(nesdev, nesqp,virt_wqs); 1393 kfree(nesqp->allocated_buffer); 1394 return ERR_PTR(-EFAULT); 1395 } 1396 } 1397 1398 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n", 1399 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp)); 1400 spin_lock_init(&nesqp->lock); 1401 nes_add_ref(&nesqp->ibqp); 1402 break; 1403 default: 1404 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type); 1405 return ERR_PTR(-EINVAL); 1406 } 1407 1408 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR); 1409 1410 /* update the QP table */ 1411 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp; 1412 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n", 1413 atomic_read(&nesvnic->netdev->refcnt)); 1414 1415 return &nesqp->ibqp; 1416} 1417 1418 1419/** 1420 * nes_clean_cq 1421 */ 1422static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq) 1423{ 1424 u32 cq_head; 1425 u32 lo; 1426 u32 hi; 1427 u64 u64temp; 1428 unsigned long flags = 0; 1429 1430 spin_lock_irqsave(&nescq->lock, flags); 1431 1432 cq_head = nescq->hw_cq.cq_head; 1433 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) { 1434 rmb(); 1435 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]); 1436 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]); 1437 u64temp = (((u64)hi) << 32) | ((u64)lo); 1438 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1); 1439 if (u64temp == (u64)(unsigned long)nesqp) { 1440 /* Zero the context value so cqe will be ignored */ 1441 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0; 1442 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0; 1443 } 1444 1445 if (++cq_head >= nescq->hw_cq.cq_size) 1446 cq_head = 0; 1447 } 1448 1449 spin_unlock_irqrestore(&nescq->lock, flags); 1450} 1451 1452 1453/** 1454 * nes_destroy_qp 1455 */ 1456static int nes_destroy_qp(struct ib_qp *ibqp) 1457{ 1458 struct nes_qp *nesqp = to_nesqp(ibqp); 1459 struct nes_ucontext *nes_ucontext; 1460 struct ib_qp_attr attr; 1461 struct iw_cm_id *cm_id; 1462 struct iw_cm_event cm_event; 1463 int ret; 1464 1465 atomic_inc(&sw_qps_destroyed); 1466 nesqp->destroyed = 1; 1467 1468 /* Blow away the connection if it exists. */ 1469 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) { 1470 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */ 1471 attr.qp_state = IB_QPS_ERR; 1472 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); 1473 } 1474 1475 if (((nesqp->ibqp_state == IB_QPS_INIT) || 1476 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) { 1477 cm_id = nesqp->cm_id; 1478 cm_event.event = IW_CM_EVENT_CONNECT_REPLY; 1479 cm_event.status = IW_CM_EVENT_STATUS_TIMEOUT; 1480 cm_event.local_addr = cm_id->local_addr; 1481 cm_event.remote_addr = cm_id->remote_addr; 1482 cm_event.private_data = NULL; 1483 cm_event.private_data_len = 0; 1484 1485 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for " 1486 "QP%u. cm_id = %p, refcount = %u. \n", 1487 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount)); 1488 1489 cm_id->rem_ref(cm_id); 1490 ret = cm_id->event_handler(cm_id, &cm_event); 1491 if (ret) 1492 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret); 1493 } 1494 1495 if (nesqp->user_mode) { 1496 if ((ibqp->uobject)&&(ibqp->uobject->context)) { 1497 nes_ucontext = to_nesucontext(ibqp->uobject->context); 1498 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs); 1499 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL; 1500 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) { 1501 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index; 1502 } 1503 } 1504 if (nesqp->pbl_pbase) 1505 kunmap(nesqp->page); 1506 } else { 1507 /* Clean any pending completions from the cq(s) */ 1508 if (nesqp->nesscq) 1509 nes_clean_cq(nesqp, nesqp->nesscq); 1510 1511 if ((nesqp->nesrcq) && (nesqp->nesrcq != nesqp->nesscq)) 1512 nes_clean_cq(nesqp, nesqp->nesrcq); 1513 } 1514 1515 nes_rem_ref(&nesqp->ibqp); 1516 return 0; 1517} 1518 1519 1520/** 1521 * nes_create_cq 1522 */ 1523static struct ib_cq *nes_create_cq(struct ib_device *ibdev, int entries, 1524 int comp_vector, 1525 struct ib_ucontext *context, struct ib_udata *udata) 1526{ 1527 u64 u64temp; 1528 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 1529 struct nes_device *nesdev = nesvnic->nesdev; 1530 struct nes_adapter *nesadapter = nesdev->nesadapter; 1531 struct nes_cq *nescq; 1532 struct nes_ucontext *nes_ucontext = NULL; 1533 struct nes_cqp_request *cqp_request; 1534 void *mem = NULL; 1535 struct nes_hw_cqp_wqe *cqp_wqe; 1536 struct nes_pbl *nespbl = NULL; 1537 struct nes_create_cq_req req; 1538 struct nes_create_cq_resp resp; 1539 u32 cq_num = 0; 1540 u32 opcode = 0; 1541 u32 pbl_entries = 1; 1542 int err; 1543 unsigned long flags; 1544 int ret; 1545 1546 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs, 1547 nesadapter->max_cq, &cq_num, &nesadapter->next_cq); 1548 if (err) { 1549 return ERR_PTR(err); 1550 } 1551 1552 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL); 1553 if (!nescq) { 1554 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1555 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n"); 1556 return ERR_PTR(-ENOMEM); 1557 } 1558 1559 nescq->hw_cq.cq_size = max(entries + 1, 5); 1560 nescq->hw_cq.cq_number = cq_num; 1561 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1; 1562 1563 1564 if (context) { 1565 nes_ucontext = to_nesucontext(context); 1566 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) { 1567 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1568 kfree(nescq); 1569 return ERR_PTR(-EFAULT); 1570 } 1571 nesvnic->mcrq_ucontext = nes_ucontext; 1572 nes_ucontext->mcrqf = req.mcrqf; 1573 if (nes_ucontext->mcrqf) { 1574 if (nes_ucontext->mcrqf & 0x80000000) 1575 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1); 1576 else if (nes_ucontext->mcrqf & 0x40000000) 1577 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff; 1578 else 1579 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1; 1580 nescq->mcrqf = nes_ucontext->mcrqf; 1581 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1582 } 1583 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n", 1584 (unsigned long)req.user_cq_buffer, entries); 1585 err = 1; 1586 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) { 1587 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) { 1588 list_del(&nespbl->list); 1589 err = 0; 1590 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n", 1591 nespbl); 1592 break; 1593 } 1594 } 1595 if (err) { 1596 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1597 kfree(nescq); 1598 return ERR_PTR(-EFAULT); 1599 } 1600 1601 pbl_entries = nespbl->pbl_size >> 3; 1602 nescq->cq_mem_size = 0; 1603 } else { 1604 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe); 1605 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n", 1606 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number); 1607 1608 /* allocate the physical buffer space */ 1609 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size, 1610 &nescq->hw_cq.cq_pbase); 1611 if (!mem) { 1612 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n"); 1613 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1614 kfree(nescq); 1615 return ERR_PTR(-ENOMEM); 1616 } 1617 1618 memset(mem, 0, nescq->cq_mem_size); 1619 nescq->hw_cq.cq_vbase = mem; 1620 nescq->hw_cq.cq_head = 0; 1621 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n", 1622 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase, 1623 (u32)nescq->hw_cq.cq_pbase); 1624 } 1625 1626 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler; 1627 spin_lock_init(&nescq->lock); 1628 1629 /* send CreateCQ request to CQP */ 1630 cqp_request = nes_get_cqp_request(nesdev); 1631 if (cqp_request == NULL) { 1632 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n"); 1633 if (!context) 1634 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, 1635 nescq->hw_cq.cq_pbase); 1636 else { 1637 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, 1638 nespbl->pbl_vbase, nespbl->pbl_pbase); 1639 kfree(nespbl); 1640 } 1641 1642 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1643 kfree(nescq); 1644 return ERR_PTR(-ENOMEM); 1645 } 1646 cqp_request->waiting = 1; 1647 cqp_wqe = &cqp_request->cqp_wqe; 1648 1649 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID | 1650 NES_CQP_CQ_CHK_OVERFLOW | 1651 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16); 1652 1653 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1654 1655 if (pbl_entries != 1) { 1656 if (pbl_entries > 32) { 1657 /* use 4k pbl */ 1658 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries); 1659 if (nesadapter->free_4kpbl == 0) { 1660 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1661 nes_free_cqp_request(nesdev, cqp_request); 1662 if (!context) 1663 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, 1664 nescq->hw_cq.cq_pbase); 1665 else { 1666 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, 1667 nespbl->pbl_vbase, nespbl->pbl_pbase); 1668 kfree(nespbl); 1669 } 1670 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1671 kfree(nescq); 1672 return ERR_PTR(-ENOMEM); 1673 } else { 1674 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK); 1675 nescq->virtual_cq = 2; 1676 nesadapter->free_4kpbl--; 1677 } 1678 } else { 1679 /* use 256 byte pbl */ 1680 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries); 1681 if (nesadapter->free_256pbl == 0) { 1682 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1683 nes_free_cqp_request(nesdev, cqp_request); 1684 if (!context) 1685 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, 1686 nescq->hw_cq.cq_pbase); 1687 else { 1688 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, 1689 nespbl->pbl_vbase, nespbl->pbl_pbase); 1690 kfree(nespbl); 1691 } 1692 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1693 kfree(nescq); 1694 return ERR_PTR(-ENOMEM); 1695 } else { 1696 opcode |= NES_CQP_CQ_VIRT; 1697 nescq->virtual_cq = 1; 1698 nesadapter->free_256pbl--; 1699 } 1700 } 1701 } 1702 1703 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1704 1705 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 1706 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); 1707 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, 1708 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16))); 1709 1710 if (context) { 1711 if (pbl_entries != 1) 1712 u64temp = (u64)nespbl->pbl_pbase; 1713 else 1714 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]); 1715 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX, 1716 nes_ucontext->mmap_db_index[0]); 1717 } else { 1718 u64temp = (u64)nescq->hw_cq.cq_pbase; 1719 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0; 1720 } 1721 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp); 1722 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0; 1723 u64temp = (u64)(unsigned long)&nescq->hw_cq; 1724 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] = 1725 cpu_to_le32((u32)(u64temp >> 1)); 1726 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 1727 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF); 1728 1729 atomic_set(&cqp_request->refcount, 2); 1730 nes_post_cqp_request(nesdev, cqp_request); 1731 1732 /* Wait for CQP */ 1733 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n", 1734 nescq->hw_cq.cq_number); 1735 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), 1736 NES_EVENT_TIMEOUT * 2); 1737 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n", 1738 nescq->hw_cq.cq_number, ret); 1739 if ((!ret) || (cqp_request->major_code)) { 1740 nes_put_cqp_request(nesdev, cqp_request); 1741 if (!context) 1742 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, 1743 nescq->hw_cq.cq_pbase); 1744 else { 1745 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, 1746 nespbl->pbl_vbase, nespbl->pbl_pbase); 1747 kfree(nespbl); 1748 } 1749 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1750 kfree(nescq); 1751 return ERR_PTR(-EIO); 1752 } 1753 nes_put_cqp_request(nesdev, cqp_request); 1754 1755 if (context) { 1756 /* free the nespbl */ 1757 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, 1758 nespbl->pbl_pbase); 1759 kfree(nespbl); 1760 resp.cq_id = nescq->hw_cq.cq_number; 1761 resp.cq_size = nescq->hw_cq.cq_size; 1762 resp.mmap_db_index = 0; 1763 if (ib_copy_to_udata(udata, &resp, sizeof resp)) { 1764 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1765 kfree(nescq); 1766 return ERR_PTR(-EFAULT); 1767 } 1768 } 1769 1770 return &nescq->ibcq; 1771} 1772 1773 1774/** 1775 * nes_destroy_cq 1776 */ 1777static int nes_destroy_cq(struct ib_cq *ib_cq) 1778{ 1779 struct nes_cq *nescq; 1780 struct nes_device *nesdev; 1781 struct nes_vnic *nesvnic; 1782 struct nes_adapter *nesadapter; 1783 struct nes_hw_cqp_wqe *cqp_wqe; 1784 struct nes_cqp_request *cqp_request; 1785 unsigned long flags; 1786 u32 opcode = 0; 1787 int ret; 1788 1789 if (ib_cq == NULL) 1790 return 0; 1791 1792 nescq = to_nescq(ib_cq); 1793 nesvnic = to_nesvnic(ib_cq->device); 1794 nesdev = nesvnic->nesdev; 1795 nesadapter = nesdev->nesadapter; 1796 1797 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number); 1798 1799 /* Send DestroyCQ request to CQP */ 1800 cqp_request = nes_get_cqp_request(nesdev); 1801 if (cqp_request == NULL) { 1802 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n"); 1803 return -ENOMEM; 1804 } 1805 cqp_request->waiting = 1; 1806 cqp_wqe = &cqp_request->cqp_wqe; 1807 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16); 1808 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1809 if (nescq->virtual_cq == 1) { 1810 nesadapter->free_256pbl++; 1811 if (nesadapter->free_256pbl > nesadapter->max_256pbl) { 1812 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n", 1813 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl); 1814 } 1815 } else if (nescq->virtual_cq == 2) { 1816 nesadapter->free_4kpbl++; 1817 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) { 1818 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n", 1819 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl); 1820 } 1821 opcode |= NES_CQP_CQ_4KB_CHUNK; 1822 } 1823 1824 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1825 1826 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 1827 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); 1828 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, 1829 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16))); 1830 if (!nescq->mcrqf) 1831 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number); 1832 1833 atomic_set(&cqp_request->refcount, 2); 1834 nes_post_cqp_request(nesdev, cqp_request); 1835 1836 /* Wait for CQP */ 1837 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n", 1838 nescq->hw_cq.cq_number); 1839 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), 1840 NES_EVENT_TIMEOUT); 1841 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u," 1842 " CQP Major:Minor codes = 0x%04X:0x%04X.\n", 1843 nescq->hw_cq.cq_number, ret, cqp_request->major_code, 1844 cqp_request->minor_code); 1845 if (!ret) { 1846 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n", 1847 nescq->hw_cq.cq_number); 1848 ret = -ETIME; 1849 } else if (cqp_request->major_code) { 1850 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n", 1851 nescq->hw_cq.cq_number); 1852 ret = -EIO; 1853 } else { 1854 ret = 0; 1855 } 1856 nes_put_cqp_request(nesdev, cqp_request); 1857 1858 if (nescq->cq_mem_size) 1859 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, 1860 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase); 1861 kfree(nescq); 1862 1863 return ret; 1864} 1865 1866/** 1867 * root_256 1868 */ 1869static u32 root_256(struct nes_device *nesdev, 1870 struct nes_root_vpbl *root_vpbl, 1871 struct nes_root_vpbl *new_root, 1872 u16 pbl_count_4k) 1873{ 1874 u64 leaf_pbl; 1875 int i, j, k; 1876 1877 if (pbl_count_4k == 1) { 1878 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 1879 512, &new_root->pbl_pbase); 1880 1881 if (new_root->pbl_vbase == NULL) 1882 return 0; 1883 1884 leaf_pbl = (u64)root_vpbl->pbl_pbase; 1885 for (i = 0; i < 16; i++) { 1886 new_root->pbl_vbase[i].pa_low = 1887 cpu_to_le32((u32)leaf_pbl); 1888 new_root->pbl_vbase[i].pa_high = 1889 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32))); 1890 leaf_pbl += 256; 1891 } 1892 } else { 1893 for (i = 3; i >= 0; i--) { 1894 j = i * 16; 1895 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i]; 1896 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) + 1897 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high)) 1898 << 32); 1899 for (k = 1; k < 16; k++) { 1900 leaf_pbl += 256; 1901 root_vpbl->pbl_vbase[j + k].pa_low = 1902 cpu_to_le32((u32)leaf_pbl); 1903 root_vpbl->pbl_vbase[j + k].pa_high = 1904 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32))); 1905 } 1906 } 1907 } 1908 1909 return 1; 1910} 1911 1912 1913/** 1914 * nes_reg_mr 1915 */ 1916static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd, 1917 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl, 1918 dma_addr_t single_buffer, u16 pbl_count_4k, 1919 u16 residual_page_count_4k, int acc, u64 *iova_start, 1920 u16 *actual_pbl_cnt, u8 *used_4k_pbls) 1921{ 1922 struct nes_hw_cqp_wqe *cqp_wqe; 1923 struct nes_cqp_request *cqp_request; 1924 unsigned long flags; 1925 int ret; 1926 struct nes_adapter *nesadapter = nesdev->nesadapter; 1927 uint pg_cnt = 0; 1928 u16 pbl_count_256 = 0; 1929 u16 pbl_count = 0; 1930 u8 use_256_pbls = 0; 1931 u8 use_4k_pbls = 0; 1932 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0; 1933 struct nes_root_vpbl new_root = {0, 0, 0}; 1934 u32 opcode = 0; 1935 u16 major_code; 1936 1937 /* Register the region with the adapter */ 1938 cqp_request = nes_get_cqp_request(nesdev); 1939 if (cqp_request == NULL) { 1940 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); 1941 return -ENOMEM; 1942 } 1943 cqp_request->waiting = 1; 1944 cqp_wqe = &cqp_request->cqp_wqe; 1945 1946 if (pbl_count_4k) { 1947 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1948 1949 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k; 1950 pbl_count_256 = (pg_cnt + 31) / 32; 1951 if (pg_cnt <= 32) { 1952 if (pbl_count_256 <= nesadapter->free_256pbl) 1953 use_256_pbls = 1; 1954 else if (pbl_count_4k <= nesadapter->free_4kpbl) 1955 use_4k_pbls = 1; 1956 } else if (pg_cnt <= 2048) { 1957 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) && 1958 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) { 1959 use_4k_pbls = 1; 1960 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) { 1961 use_256_pbls = 1; 1962 use_two_level = 1; 1963 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) { 1964 use_4k_pbls = 1; 1965 } 1966 } else { 1967 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl) 1968 use_4k_pbls = 1; 1969 } 1970 1971 if (use_256_pbls) { 1972 pbl_count = pbl_count_256; 1973 nesadapter->free_256pbl -= pbl_count + use_two_level; 1974 } else if (use_4k_pbls) { 1975 pbl_count = pbl_count_4k; 1976 nesadapter->free_4kpbl -= pbl_count + use_two_level; 1977 } else { 1978 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1979 nes_debug(NES_DBG_MR, "Out of Pbls\n"); 1980 nes_free_cqp_request(nesdev, cqp_request); 1981 return -ENOMEM; 1982 } 1983 1984 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1985 } 1986 1987 if (use_256_pbls && use_two_level) { 1988 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) { 1989 if (new_root.pbl_pbase != 0) 1990 root_vpbl = &new_root; 1991 } else { 1992 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1993 nesadapter->free_256pbl += pbl_count_256 + use_two_level; 1994 use_256_pbls = 0; 1995 1996 if (pbl_count_4k == 1) 1997 use_two_level = 0; 1998 pbl_count = pbl_count_4k; 1999 2000 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) { 2001 nesadapter->free_4kpbl -= pbl_count + use_two_level; 2002 use_4k_pbls = 1; 2003 } 2004 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 2005 2006 if (use_4k_pbls == 0) 2007 return -ENOMEM; 2008 } 2009 } 2010 2011 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ | 2012 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR; 2013 if (acc & IB_ACCESS_LOCAL_WRITE) 2014 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE; 2015 if (acc & IB_ACCESS_REMOTE_WRITE) 2016 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN; 2017 if (acc & IB_ACCESS_REMOTE_READ) 2018 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN; 2019 if (acc & IB_ACCESS_MW_BIND) 2020 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN; 2021 2022 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 2023 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); 2024 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start); 2025 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length); 2026 2027 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] = 2028 cpu_to_le32((u32)(region_length >> 8) & 0xff000000); 2029 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |= 2030 cpu_to_le32(nespd->pd_id & 0x00007fff); 2031 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag); 2032 2033 if (pbl_count == 0) { 2034 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer); 2035 } else { 2036 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase); 2037 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count); 2038 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8)); 2039 2040 if (use_4k_pbls) 2041 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE); 2042 } 2043 barrier(); 2044 2045 atomic_set(&cqp_request->refcount, 2); 2046 nes_post_cqp_request(nesdev, cqp_request); 2047 2048 /* Wait for CQP */ 2049 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), 2050 NES_EVENT_TIMEOUT); 2051 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u," 2052 " CQP Major:Minor codes = 0x%04X:0x%04X.\n", 2053 stag, ret, cqp_request->major_code, cqp_request->minor_code); 2054 major_code = cqp_request->major_code; 2055 nes_put_cqp_request(nesdev, cqp_request); 2056 2057 if ((!ret || major_code) && pbl_count != 0) { 2058 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 2059 if (use_256_pbls) 2060 nesadapter->free_256pbl += pbl_count + use_two_level; 2061 else if (use_4k_pbls) 2062 nesadapter->free_4kpbl += pbl_count + use_two_level; 2063 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 2064 } 2065 if (new_root.pbl_pbase) 2066 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase, 2067 new_root.pbl_pbase); 2068 2069 if (!ret) 2070 return -ETIME; 2071 else if (major_code) 2072 return -EIO; 2073 2074 *actual_pbl_cnt = pbl_count + use_two_level; 2075 *used_4k_pbls = use_4k_pbls; 2076 return 0; 2077} 2078 2079 2080/** 2081 * nes_reg_phys_mr 2082 */ 2083static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd, 2084 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc, 2085 u64 * iova_start) 2086{ 2087 u64 region_length; 2088 struct nes_pd *nespd = to_nespd(ib_pd); 2089 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device); 2090 struct nes_device *nesdev = nesvnic->nesdev; 2091 struct nes_adapter *nesadapter = nesdev->nesadapter; 2092 struct nes_mr *nesmr; 2093 struct ib_mr *ibmr; 2094 struct nes_vpbl vpbl; 2095 struct nes_root_vpbl root_vpbl; 2096 u32 stag; 2097 u32 i; 2098 unsigned long mask; 2099 u32 stag_index = 0; 2100 u32 next_stag_index = 0; 2101 u32 driver_key = 0; 2102 u32 root_pbl_index = 0; 2103 u32 cur_pbl_index = 0; 2104 int err = 0, pbl_depth = 0; 2105 int ret = 0; 2106 u16 pbl_count = 0; 2107 u8 single_page = 1; 2108 u8 stag_key = 0; 2109 2110 pbl_depth = 0; 2111 region_length = 0; 2112 vpbl.pbl_vbase = NULL; 2113 root_vpbl.pbl_vbase = NULL; 2114 root_vpbl.pbl_pbase = 0; 2115 2116 get_random_bytes(&next_stag_index, sizeof(next_stag_index)); 2117 stag_key = (u8)next_stag_index; 2118 2119 driver_key = 0; 2120 2121 next_stag_index >>= 8; 2122 next_stag_index %= nesadapter->max_mr; 2123 if (num_phys_buf > (1024*512)) { 2124 return ERR_PTR(-E2BIG); 2125 } 2126 2127 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK) 2128 return ERR_PTR(-EINVAL); 2129 2130 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr, 2131 &stag_index, &next_stag_index); 2132 if (err) { 2133 return ERR_PTR(err); 2134 } 2135 2136 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); 2137 if (!nesmr) { 2138 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2139 return ERR_PTR(-ENOMEM); 2140 } 2141 2142 for (i = 0; i < num_phys_buf; i++) { 2143 2144 if ((i & 0x01FF) == 0) { 2145 if (root_pbl_index == 1) { 2146 /* Allocate the root PBL */ 2147 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192, 2148 &root_vpbl.pbl_pbase); 2149 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n", 2150 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase); 2151 if (!root_vpbl.pbl_vbase) { 2152 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, 2153 vpbl.pbl_pbase); 2154 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2155 kfree(nesmr); 2156 return ERR_PTR(-ENOMEM); 2157 } 2158 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL); 2159 if (!root_vpbl.leaf_vpbl) { 2160 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, 2161 root_vpbl.pbl_pbase); 2162 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, 2163 vpbl.pbl_pbase); 2164 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2165 kfree(nesmr); 2166 return ERR_PTR(-ENOMEM); 2167 } 2168 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase); 2169 root_vpbl.pbl_vbase[0].pa_high = 2170 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32))); 2171 root_vpbl.leaf_vpbl[0] = vpbl; 2172 } 2173 /* Allocate a 4K buffer for the PBL */ 2174 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096, 2175 &vpbl.pbl_pbase); 2176 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n", 2177 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase); 2178 if (!vpbl.pbl_vbase) { 2179 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2180 ibmr = ERR_PTR(-ENOMEM); 2181 kfree(nesmr); 2182 goto reg_phys_err; 2183 } 2184 /* Fill in the root table */ 2185 if (1 <= root_pbl_index) { 2186 root_vpbl.pbl_vbase[root_pbl_index].pa_low = 2187 cpu_to_le32((u32)vpbl.pbl_pbase); 2188 root_vpbl.pbl_vbase[root_pbl_index].pa_high = 2189 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32))); 2190 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl; 2191 } 2192 root_pbl_index++; 2193 cur_pbl_index = 0; 2194 } 2195 2196 mask = !buffer_list[i].size; 2197 if (i != 0) 2198 mask |= buffer_list[i].addr; 2199 if (i != num_phys_buf - 1) 2200 mask |= buffer_list[i].addr + buffer_list[i].size; 2201 2202 if (mask & ~PAGE_MASK) { 2203 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2204 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n"); 2205 ibmr = ERR_PTR(-EINVAL); 2206 kfree(nesmr); 2207 goto reg_phys_err; 2208 } 2209 2210 region_length += buffer_list[i].size; 2211 if ((i != 0) && (single_page)) { 2212 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr) 2213 single_page = 0; 2214 } 2215 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK); 2216 vpbl.pbl_vbase[cur_pbl_index++].pa_high = 2217 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32))); 2218 } 2219 2220 stag = stag_index << 8; 2221 stag |= driver_key; 2222 stag += (u32)stag_key; 2223 2224 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX," 2225 " length = 0x%016lX, index = 0x%08X\n", 2226 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index); 2227 2228 /* Make the leaf PBL the root if only one PBL */ 2229 if (root_pbl_index == 1) { 2230 root_vpbl.pbl_pbase = vpbl.pbl_pbase; 2231 } 2232 2233 if (single_page) { 2234 pbl_count = 0; 2235 } else { 2236 pbl_count = root_pbl_index; 2237 } 2238 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl, 2239 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start, 2240 &nesmr->pbls_used, &nesmr->pbl_4k); 2241 2242 if (ret == 0) { 2243 nesmr->ibmr.rkey = stag; 2244 nesmr->ibmr.lkey = stag; 2245 nesmr->mode = IWNES_MEMREG_TYPE_MEM; 2246 ibmr = &nesmr->ibmr; 2247 } else { 2248 kfree(nesmr); 2249 ibmr = ERR_PTR(-ENOMEM); 2250 } 2251 2252 reg_phys_err: 2253 /* free the resources */ 2254 if (root_pbl_index == 1) { 2255 /* single PBL case */ 2256 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase); 2257 } else { 2258 for (i=0; i<root_pbl_index; i++) { 2259 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase, 2260 root_vpbl.leaf_vpbl[i].pbl_pbase); 2261 } 2262 kfree(root_vpbl.leaf_vpbl); 2263 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, 2264 root_vpbl.pbl_pbase); 2265 } 2266 2267 return ibmr; 2268} 2269 2270 2271/** 2272 * nes_get_dma_mr 2273 */ 2274static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc) 2275{ 2276 struct ib_phys_buf bl; 2277 u64 kva = 0; 2278 2279 nes_debug(NES_DBG_MR, "\n"); 2280 2281 bl.size = (u64)0xffffffffffULL; 2282 bl.addr = 0; 2283 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva); 2284} 2285 2286 2287/** 2288 * nes_reg_user_mr 2289 */ 2290static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 2291 u64 virt, int acc, struct ib_udata *udata) 2292{ 2293 u64 iova_start; 2294 __le64 *pbl; 2295 u64 region_length; 2296 dma_addr_t last_dma_addr = 0; 2297 dma_addr_t first_dma_addr = 0; 2298 struct nes_pd *nespd = to_nespd(pd); 2299 struct nes_vnic *nesvnic = to_nesvnic(pd->device); 2300 struct nes_device *nesdev = nesvnic->nesdev; 2301 struct nes_adapter *nesadapter = nesdev->nesadapter; 2302 struct ib_mr *ibmr = ERR_PTR(-EINVAL); 2303 struct ib_umem_chunk *chunk; 2304 struct nes_ucontext *nes_ucontext; 2305 struct nes_pbl *nespbl; 2306 struct nes_mr *nesmr; 2307 struct ib_umem *region; 2308 struct nes_mem_reg_req req; 2309 struct nes_vpbl vpbl; 2310 struct nes_root_vpbl root_vpbl; 2311 int nmap_index, page_index; 2312 int page_count = 0; 2313 int err, pbl_depth = 0; 2314 int chunk_pages; 2315 int ret; 2316 u32 stag; 2317 u32 stag_index = 0; 2318 u32 next_stag_index; 2319 u32 driver_key; 2320 u32 root_pbl_index = 0; 2321 u32 cur_pbl_index = 0; 2322 u32 skip_pages; 2323 u16 pbl_count; 2324 u8 single_page = 1; 2325 u8 stag_key; 2326 2327 region = ib_umem_get(pd->uobject->context, start, length, acc, 0); 2328 if (IS_ERR(region)) { 2329 return (struct ib_mr *)region; 2330 } 2331 2332 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u," 2333 " offset = %u, page size = %u.\n", 2334 (unsigned long int)start, (unsigned long int)virt, (u32)length, 2335 region->offset, region->page_size); 2336 2337 skip_pages = ((u32)region->offset) >> 12; 2338 2339 if (ib_copy_from_udata(&req, udata, sizeof(req))) 2340 return ERR_PTR(-EFAULT); 2341 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type); 2342 2343 switch (req.reg_type) { 2344 case IWNES_MEMREG_TYPE_MEM: 2345 pbl_depth = 0; 2346 region_length = 0; 2347 vpbl.pbl_vbase = NULL; 2348 root_vpbl.pbl_vbase = NULL; 2349 root_vpbl.pbl_pbase = 0; 2350 2351 get_random_bytes(&next_stag_index, sizeof(next_stag_index)); 2352 stag_key = (u8)next_stag_index; 2353 2354 driver_key = next_stag_index & 0x70000000; 2355 2356 next_stag_index >>= 8; 2357 next_stag_index %= nesadapter->max_mr; 2358 2359 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, 2360 nesadapter->max_mr, &stag_index, &next_stag_index); 2361 if (err) { 2362 ib_umem_release(region); 2363 return ERR_PTR(err); 2364 } 2365 2366 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); 2367 if (!nesmr) { 2368 ib_umem_release(region); 2369 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2370 return ERR_PTR(-ENOMEM); 2371 } 2372 nesmr->region = region; 2373 2374 list_for_each_entry(chunk, ®ion->chunk_list, list) { 2375 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n", 2376 chunk->nents, chunk->nmap); 2377 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) { 2378 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) { 2379 ib_umem_release(region); 2380 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2381 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n", 2382 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index])); 2383 ibmr = ERR_PTR(-EINVAL); 2384 kfree(nesmr); 2385 goto reg_user_mr_err; 2386 } 2387 2388 if (!sg_dma_len(&chunk->page_list[nmap_index])) { 2389 ib_umem_release(region); 2390 nes_free_resource(nesadapter, nesadapter->allocated_mrs, 2391 stag_index); 2392 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n"); 2393 ibmr = ERR_PTR(-EINVAL); 2394 kfree(nesmr); 2395 goto reg_user_mr_err; 2396 } 2397 2398 region_length += sg_dma_len(&chunk->page_list[nmap_index]); 2399 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12; 2400 region_length -= skip_pages << 12; 2401 for (page_index=skip_pages; page_index < chunk_pages; page_index++) { 2402 skip_pages = 0; 2403 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length) 2404 goto enough_pages; 2405 if ((page_count&0x01FF) == 0) { 2406 if (page_count >= 1024 * 512) { 2407 ib_umem_release(region); 2408 nes_free_resource(nesadapter, 2409 nesadapter->allocated_mrs, stag_index); 2410 kfree(nesmr); 2411 ibmr = ERR_PTR(-E2BIG); 2412 goto reg_user_mr_err; 2413 } 2414 if (root_pbl_index == 1) { 2415 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 2416 8192, &root_vpbl.pbl_pbase); 2417 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n", 2418 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase); 2419 if (!root_vpbl.pbl_vbase) { 2420 ib_umem_release(region); 2421 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, 2422 vpbl.pbl_pbase); 2423 nes_free_resource(nesadapter, nesadapter->allocated_mrs, 2424 stag_index); 2425 kfree(nesmr); 2426 ibmr = ERR_PTR(-ENOMEM); 2427 goto reg_user_mr_err; 2428 } 2429 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, 2430 GFP_KERNEL); 2431 if (!root_vpbl.leaf_vpbl) { 2432 ib_umem_release(region); 2433 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, 2434 root_vpbl.pbl_pbase); 2435 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, 2436 vpbl.pbl_pbase); 2437 nes_free_resource(nesadapter, nesadapter->allocated_mrs, 2438 stag_index); 2439 kfree(nesmr); 2440 ibmr = ERR_PTR(-ENOMEM); 2441 goto reg_user_mr_err; 2442 } 2443 root_vpbl.pbl_vbase[0].pa_low = 2444 cpu_to_le32((u32)vpbl.pbl_pbase); 2445 root_vpbl.pbl_vbase[0].pa_high = 2446 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32))); 2447 root_vpbl.leaf_vpbl[0] = vpbl; 2448 } 2449 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096, 2450 &vpbl.pbl_pbase); 2451 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n", 2452 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase); 2453 if (!vpbl.pbl_vbase) { 2454 ib_umem_release(region); 2455 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2456 ibmr = ERR_PTR(-ENOMEM); 2457 kfree(nesmr); 2458 goto reg_user_mr_err; 2459 } 2460 if (1 <= root_pbl_index) { 2461 root_vpbl.pbl_vbase[root_pbl_index].pa_low = 2462 cpu_to_le32((u32)vpbl.pbl_pbase); 2463 root_vpbl.pbl_vbase[root_pbl_index].pa_high = 2464 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32))); 2465 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl; 2466 } 2467 root_pbl_index++; 2468 cur_pbl_index = 0; 2469 } 2470 if (single_page) { 2471 if (page_count != 0) { 2472 if ((last_dma_addr+4096) != 2473 (sg_dma_address(&chunk->page_list[nmap_index])+ 2474 (page_index*4096))) 2475 single_page = 0; 2476 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+ 2477 (page_index*4096); 2478 } else { 2479 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+ 2480 (page_index*4096); 2481 last_dma_addr = first_dma_addr; 2482 } 2483 } 2484 2485 vpbl.pbl_vbase[cur_pbl_index].pa_low = 2486 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+ 2487 (page_index*4096))); 2488 vpbl.pbl_vbase[cur_pbl_index].pa_high = 2489 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+ 2490 (page_index*4096))) >> 32))); 2491 cur_pbl_index++; 2492 page_count++; 2493 } 2494 } 2495 } 2496 enough_pages: 2497 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x," 2498 " stag_key=0x%08x\n", 2499 stag_index, driver_key, stag_key); 2500 stag = stag_index << 8; 2501 stag |= driver_key; 2502 stag += (u32)stag_key; 2503 if (stag == 0) { 2504 stag = 1; 2505 } 2506 2507 iova_start = virt; 2508 /* Make the leaf PBL the root if only one PBL */ 2509 if (root_pbl_index == 1) { 2510 root_vpbl.pbl_pbase = vpbl.pbl_pbase; 2511 } 2512 2513 if (single_page) { 2514 pbl_count = 0; 2515 } else { 2516 pbl_count = root_pbl_index; 2517 first_dma_addr = 0; 2518 } 2519 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X," 2520 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n", 2521 stag, (unsigned int)iova_start, 2522 (unsigned int)region_length, stag_index, 2523 (unsigned long long)region->length, pbl_count); 2524 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl, 2525 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc, 2526 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k); 2527 2528 nes_debug(NES_DBG_MR, "ret=%d\n", ret); 2529 2530 if (ret == 0) { 2531 nesmr->ibmr.rkey = stag; 2532 nesmr->ibmr.lkey = stag; 2533 nesmr->mode = IWNES_MEMREG_TYPE_MEM; 2534 ibmr = &nesmr->ibmr; 2535 } else { 2536 ib_umem_release(region); 2537 kfree(nesmr); 2538 ibmr = ERR_PTR(-ENOMEM); 2539 } 2540 2541 reg_user_mr_err: 2542 /* free the resources */ 2543 if (root_pbl_index == 1) { 2544 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, 2545 vpbl.pbl_pbase); 2546 } else { 2547 for (page_index=0; page_index<root_pbl_index; page_index++) { 2548 pci_free_consistent(nesdev->pcidev, 4096, 2549 root_vpbl.leaf_vpbl[page_index].pbl_vbase, 2550 root_vpbl.leaf_vpbl[page_index].pbl_pbase); 2551 } 2552 kfree(root_vpbl.leaf_vpbl); 2553 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, 2554 root_vpbl.pbl_pbase); 2555 } 2556 2557 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr); 2558 2559 return ibmr; 2560 case IWNES_MEMREG_TYPE_QP: 2561 case IWNES_MEMREG_TYPE_CQ: 2562 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL); 2563 if (!nespbl) { 2564 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n"); 2565 ib_umem_release(region); 2566 return ERR_PTR(-ENOMEM); 2567 } 2568 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); 2569 if (!nesmr) { 2570 ib_umem_release(region); 2571 kfree(nespbl); 2572 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n"); 2573 return ERR_PTR(-ENOMEM); 2574 } 2575 nesmr->region = region; 2576 nes_ucontext = to_nesucontext(pd->uobject->context); 2577 pbl_depth = region->length >> 12; 2578 pbl_depth += (region->length & (4096-1)) ? 1 : 0; 2579 nespbl->pbl_size = pbl_depth*sizeof(u64); 2580 if (req.reg_type == IWNES_MEMREG_TYPE_QP) { 2581 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory"); 2582 } else { 2583 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory"); 2584 } 2585 2586 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n", 2587 nespbl->pbl_size, pbl_depth); 2588 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size, 2589 &nespbl->pbl_pbase); 2590 if (!pbl) { 2591 ib_umem_release(region); 2592 kfree(nesmr); 2593 kfree(nespbl); 2594 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n"); 2595 return ERR_PTR(-ENOMEM); 2596 } 2597 2598 nespbl->pbl_vbase = (u64 *)pbl; 2599 nespbl->user_base = start; 2600 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx," 2601 " pbl_vbase=%p user_base=0x%lx\n", 2602 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase, 2603 (void *) nespbl->pbl_vbase, nespbl->user_base); 2604 2605 list_for_each_entry(chunk, ®ion->chunk_list, list) { 2606 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) { 2607 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12; 2608 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0; 2609 nespbl->page = sg_page(&chunk->page_list[0]); 2610 for (page_index=0; page_index<chunk_pages; page_index++) { 2611 ((__le32 *)pbl)[0] = cpu_to_le32((u32) 2612 (sg_dma_address(&chunk->page_list[nmap_index])+ 2613 (page_index*4096))); 2614 ((__le32 *)pbl)[1] = cpu_to_le32(((u64) 2615 (sg_dma_address(&chunk->page_list[nmap_index])+ 2616 (page_index*4096)))>>32); 2617 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl, 2618 (unsigned long long)*pbl, 2619 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0])); 2620 pbl++; 2621 } 2622 } 2623 } 2624 if (req.reg_type == IWNES_MEMREG_TYPE_QP) { 2625 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list); 2626 } else { 2627 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list); 2628 } 2629 nesmr->ibmr.rkey = -1; 2630 nesmr->ibmr.lkey = -1; 2631 nesmr->mode = req.reg_type; 2632 return &nesmr->ibmr; 2633 } 2634 2635 return ERR_PTR(-ENOSYS); 2636} 2637 2638 2639/** 2640 * nes_dereg_mr 2641 */ 2642static int nes_dereg_mr(struct ib_mr *ib_mr) 2643{ 2644 struct nes_mr *nesmr = to_nesmr(ib_mr); 2645 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device); 2646 struct nes_device *nesdev = nesvnic->nesdev; 2647 struct nes_adapter *nesadapter = nesdev->nesadapter; 2648 struct nes_hw_cqp_wqe *cqp_wqe; 2649 struct nes_cqp_request *cqp_request; 2650 unsigned long flags; 2651 int ret; 2652 u16 major_code; 2653 u16 minor_code; 2654 2655 if (nesmr->region) { 2656 ib_umem_release(nesmr->region); 2657 } 2658 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) { 2659 kfree(nesmr); 2660 return 0; 2661 } 2662 2663 /* Deallocate the region with the adapter */ 2664 2665 cqp_request = nes_get_cqp_request(nesdev); 2666 if (cqp_request == NULL) { 2667 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); 2668 return -ENOMEM; 2669 } 2670 cqp_request->waiting = 1; 2671 cqp_wqe = &cqp_request->cqp_wqe; 2672 2673 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 2674 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, 2675 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO | 2676 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR); 2677 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey); 2678 2679 atomic_set(&cqp_request->refcount, 2); 2680 nes_post_cqp_request(nesdev, cqp_request); 2681 2682 /* Wait for CQP */ 2683 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey); 2684 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0), 2685 NES_EVENT_TIMEOUT); 2686 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u," 2687 " CQP Major:Minor codes = 0x%04X:0x%04X\n", 2688 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code); 2689 2690 major_code = cqp_request->major_code; 2691 minor_code = cqp_request->minor_code; 2692 2693 nes_put_cqp_request(nesdev, cqp_request); 2694 2695 if (!ret) { 2696 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag," 2697 " ib_mr=%p, rkey = 0x%08X\n", 2698 ib_mr, ib_mr->rkey); 2699 return -ETIME; 2700 } else if (major_code) { 2701 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting" 2702 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n", 2703 major_code, minor_code, ib_mr, ib_mr->rkey); 2704 return -EIO; 2705 } 2706 2707 if (nesmr->pbls_used != 0) { 2708 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 2709 if (nesmr->pbl_4k) { 2710 nesadapter->free_4kpbl += nesmr->pbls_used; 2711 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) 2712 printk(KERN_ERR PFX "free 4KB PBLs(%u) has " 2713 "exceeded the max(%u)\n", 2714 nesadapter->free_4kpbl, 2715 nesadapter->max_4kpbl); 2716 } else { 2717 nesadapter->free_256pbl += nesmr->pbls_used; 2718 if (nesadapter->free_256pbl > nesadapter->max_256pbl) 2719 printk(KERN_ERR PFX "free 256B PBLs(%u) has " 2720 "exceeded the max(%u)\n", 2721 nesadapter->free_256pbl, 2722 nesadapter->max_256pbl); 2723 } 2724 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 2725 } 2726 nes_free_resource(nesadapter, nesadapter->allocated_mrs, 2727 (ib_mr->rkey & 0x0fffff00) >> 8); 2728 2729 kfree(nesmr); 2730 2731 return 0; 2732} 2733 2734 2735/** 2736 * show_rev 2737 */ 2738static ssize_t show_rev(struct device *dev, struct device_attribute *attr, 2739 char *buf) 2740{ 2741 struct nes_ib_device *nesibdev = 2742 container_of(dev, struct nes_ib_device, ibdev.dev); 2743 struct nes_vnic *nesvnic = nesibdev->nesvnic; 2744 2745 nes_debug(NES_DBG_INIT, "\n"); 2746 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev); 2747} 2748 2749 2750/** 2751 * show_fw_ver 2752 */ 2753static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, 2754 char *buf) 2755{ 2756 struct nes_ib_device *nesibdev = 2757 container_of(dev, struct nes_ib_device, ibdev.dev); 2758 struct nes_vnic *nesvnic = nesibdev->nesvnic; 2759 2760 nes_debug(NES_DBG_INIT, "\n"); 2761 return sprintf(buf, "%u.%u\n", 2762 (nesvnic->nesdev->nesadapter->firmware_version >> 16), 2763 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff)); 2764} 2765 2766 2767/** 2768 * show_hca 2769 */ 2770static ssize_t show_hca(struct device *dev, struct device_attribute *attr, 2771 char *buf) 2772{ 2773 nes_debug(NES_DBG_INIT, "\n"); 2774 return sprintf(buf, "NES020\n"); 2775} 2776 2777 2778/** 2779 * show_board 2780 */ 2781static ssize_t show_board(struct device *dev, struct device_attribute *attr, 2782 char *buf) 2783{ 2784 nes_debug(NES_DBG_INIT, "\n"); 2785 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID"); 2786} 2787 2788 2789static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 2790static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 2791static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 2792static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 2793 2794static struct device_attribute *nes_dev_attributes[] = { 2795 &dev_attr_hw_rev, 2796 &dev_attr_fw_ver, 2797 &dev_attr_hca_type, 2798 &dev_attr_board_id 2799}; 2800 2801 2802/** 2803 * nes_query_qp 2804 */ 2805static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 2806 int attr_mask, struct ib_qp_init_attr *init_attr) 2807{ 2808 struct nes_qp *nesqp = to_nesqp(ibqp); 2809 2810 nes_debug(NES_DBG_QP, "\n"); 2811 2812 attr->qp_access_flags = 0; 2813 attr->cap.max_send_wr = nesqp->hwqp.sq_size; 2814 attr->cap.max_recv_wr = nesqp->hwqp.rq_size; 2815 attr->cap.max_recv_sge = 1; 2816 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) { 2817 init_attr->cap.max_inline_data = 0; 2818 } else { 2819 init_attr->cap.max_inline_data = 64; 2820 } 2821 2822 init_attr->event_handler = nesqp->ibqp.event_handler; 2823 init_attr->qp_context = nesqp->ibqp.qp_context; 2824 init_attr->send_cq = nesqp->ibqp.send_cq; 2825 init_attr->recv_cq = nesqp->ibqp.recv_cq; 2826 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq; 2827 init_attr->cap = attr->cap; 2828 2829 return 0; 2830} 2831 2832 2833/** 2834 * nes_hw_modify_qp 2835 */ 2836int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp, 2837 u32 next_iwarp_state, u32 termlen, u32 wait_completion) 2838{ 2839 struct nes_hw_cqp_wqe *cqp_wqe; 2840 /* struct iw_cm_id *cm_id = nesqp->cm_id; */ 2841 /* struct iw_cm_event cm_event; */ 2842 struct nes_cqp_request *cqp_request; 2843 int ret; 2844 u16 major_code; 2845 2846 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n", 2847 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount)); 2848 2849 cqp_request = nes_get_cqp_request(nesdev); 2850 if (cqp_request == NULL) { 2851 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n"); 2852 return -ENOMEM; 2853 } 2854 if (wait_completion) { 2855 cqp_request->waiting = 1; 2856 } else { 2857 cqp_request->waiting = 0; 2858 } 2859 cqp_wqe = &cqp_request->cqp_wqe; 2860 2861 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, 2862 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state); 2863 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n", 2864 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX])); 2865 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 2866 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id); 2867 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase); 2868 2869 /* If sending a terminate message, fill in the length (in words) */ 2870 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) && 2871 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) { 2872 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT; 2873 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen); 2874 } 2875 2876 atomic_set(&cqp_request->refcount, 2); 2877 nes_post_cqp_request(nesdev, cqp_request); 2878 2879 /* Wait for CQP */ 2880 if (wait_completion) { 2881 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n", 2882 nesqp->hwqp.qp_id); */ 2883 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0), 2884 NES_EVENT_TIMEOUT); 2885 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, " 2886 "CQP Major:Minor codes = 0x%04X:0x%04X.\n", 2887 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code); 2888 major_code = cqp_request->major_code; 2889 if (major_code) { 2890 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed" 2891 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n", 2892 nesqp->hwqp.qp_id, cqp_request->major_code, 2893 cqp_request->minor_code, next_iwarp_state); 2894 } 2895 2896 nes_put_cqp_request(nesdev, cqp_request); 2897 2898 if (!ret) 2899 return -ETIME; 2900 else if (major_code) 2901 return -EIO; 2902 else 2903 return 0; 2904 } else { 2905 return 0; 2906 } 2907} 2908 2909 2910/** 2911 * nes_modify_qp 2912 */ 2913int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 2914 int attr_mask, struct ib_udata *udata) 2915{ 2916 struct nes_qp *nesqp = to_nesqp(ibqp); 2917 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); 2918 struct nes_device *nesdev = nesvnic->nesdev; 2919 /* u32 cqp_head; */ 2920 /* u32 counter; */ 2921 u32 next_iwarp_state = 0; 2922 int err; 2923 unsigned long qplockflags; 2924 int ret; 2925 u16 original_last_aeq; 2926 u8 issue_modify_qp = 0; 2927 u8 issue_disconnect = 0; 2928 u8 dont_wait = 0; 2929 2930 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u," 2931 " iwarp_state=0x%X, refcount=%d\n", 2932 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state, 2933 nesqp->iwarp_state, atomic_read(&nesqp->refcount)); 2934 2935 spin_lock_irqsave(&nesqp->lock, qplockflags); 2936 2937 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X," 2938 " QP Access Flags=0x%X, attr_mask = 0x%0x\n", 2939 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state, 2940 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask); 2941 2942 if (attr_mask & IB_QP_STATE) { 2943 switch (attr->qp_state) { 2944 case IB_QPS_INIT: 2945 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n", 2946 nesqp->hwqp.qp_id); 2947 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) { 2948 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2949 return -EINVAL; 2950 } 2951 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE; 2952 issue_modify_qp = 1; 2953 break; 2954 case IB_QPS_RTR: 2955 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n", 2956 nesqp->hwqp.qp_id); 2957 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) { 2958 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2959 return -EINVAL; 2960 } 2961 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE; 2962 issue_modify_qp = 1; 2963 break; 2964 case IB_QPS_RTS: 2965 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n", 2966 nesqp->hwqp.qp_id); 2967 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) { 2968 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2969 return -EINVAL; 2970 } 2971 if (nesqp->cm_id == NULL) { 2972 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n", 2973 nesqp->hwqp.qp_id ); 2974 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2975 return -EINVAL; 2976 } 2977 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS; 2978 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS) 2979 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID | 2980 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID; 2981 issue_modify_qp = 1; 2982 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED; 2983 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS; 2984 nesqp->hte_added = 1; 2985 break; 2986 case IB_QPS_SQD: 2987 issue_modify_qp = 1; 2988 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n", 2989 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail); 2990 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) { 2991 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2992 return 0; 2993 } else { 2994 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) { 2995 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing" 2996 " ignored due to current iWARP state\n", 2997 nesqp->hwqp.qp_id); 2998 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2999 return -EINVAL; 3000 } 3001 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) { 3002 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing" 3003 " already done based on hw state.\n", 3004 nesqp->hwqp.qp_id); 3005 issue_modify_qp = 0; 3006 } 3007 switch (nesqp->hw_iwarp_state) { 3008 case NES_AEQE_IWARP_STATE_CLOSING: 3009 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING; 3010 case NES_AEQE_IWARP_STATE_TERMINATE: 3011 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE; 3012 break; 3013 case NES_AEQE_IWARP_STATE_ERROR: 3014 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR; 3015 break; 3016 default: 3017 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING; 3018 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING; 3019 break; 3020 } 3021 } 3022 break; 3023 case IB_QPS_SQE: 3024 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n", 3025 nesqp->hwqp.qp_id); 3026 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) { 3027 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3028 return -EINVAL; 3029 } 3030 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */ 3031 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE; 3032 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE; 3033 issue_modify_qp = 1; 3034 break; 3035 case IB_QPS_ERR: 3036 case IB_QPS_RESET: 3037 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) { 3038 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3039 return -EINVAL; 3040 } 3041 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n", 3042 nesqp->hwqp.qp_id); 3043 if (nesqp->term_flags) 3044 del_timer(&nesqp->terminate_timer); 3045 3046 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR; 3047 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */ 3048 if (nesqp->hte_added) { 3049 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n"); 3050 next_iwarp_state |= NES_CQP_QP_DEL_HTE; 3051 nesqp->hte_added = 0; 3052 } 3053 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) && 3054 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) { 3055 next_iwarp_state |= NES_CQP_QP_RESET; 3056 } else { 3057 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n", 3058 nesqp->hwqp.qp_id, nesqp->hw_tcp_state); 3059 dont_wait = 1; 3060 } 3061 issue_modify_qp = 1; 3062 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR; 3063 break; 3064 default: 3065 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3066 return -EINVAL; 3067 break; 3068 } 3069 3070 nesqp->ibqp_state = attr->qp_state; 3071 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == 3072 (u32)NES_CQP_QP_IWARP_STATE_RTS) && 3073 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) > 3074 (u32)NES_CQP_QP_IWARP_STATE_RTS)) { 3075 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK; 3076 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n", 3077 nesqp->iwarp_state); 3078 issue_disconnect = 1; 3079 } else { 3080 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK; 3081 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n", 3082 nesqp->iwarp_state); 3083 } 3084 } 3085 3086 if (attr_mask & IB_QP_ACCESS_FLAGS) { 3087 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) { 3088 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN | 3089 NES_QPCONTEXT_MISC_RDMA_READ_EN); 3090 issue_modify_qp = 1; 3091 } 3092 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) { 3093 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN); 3094 issue_modify_qp = 1; 3095 } 3096 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) { 3097 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN); 3098 issue_modify_qp = 1; 3099 } 3100 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) { 3101 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN); 3102 issue_modify_qp = 1; 3103 } 3104 3105 if (nesqp->user_mode) { 3106 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN | 3107 NES_QPCONTEXT_MISC_RDMA_READ_EN); 3108 issue_modify_qp = 1; 3109 } 3110 } 3111 3112 original_last_aeq = nesqp->last_aeq; 3113 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3114 3115 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp); 3116 3117 ret = 0; 3118 3119 3120 if (issue_modify_qp) { 3121 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n"); 3122 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1); 3123 if (ret) 3124 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)" 3125 " failed for QP%u.\n", 3126 next_iwarp_state, nesqp->hwqp.qp_id); 3127 3128 } 3129 3130 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) { 3131 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d)," 3132 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", 3133 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3134 original_last_aeq, nesqp->last_aeq); 3135 if ((!ret) || 3136 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) && 3137 (ret))) { 3138 if (dont_wait) { 3139 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) { 3140 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d)," 3141 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", 3142 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3143 original_last_aeq, nesqp->last_aeq); 3144 /* this one is for the cm_disconnect thread */ 3145 spin_lock_irqsave(&nesqp->lock, qplockflags); 3146 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; 3147 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; 3148 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3149 nes_cm_disconn(nesqp); 3150 } else { 3151 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n", 3152 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount)); 3153 } 3154 } else { 3155 spin_lock_irqsave(&nesqp->lock, qplockflags); 3156 if (nesqp->cm_id) { 3157 /* These two are for the timer thread */ 3158 if (atomic_inc_return(&nesqp->close_timer_started) == 1) { 3159 nesqp->cm_id->add_ref(nesqp->cm_id); 3160 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d)," 3161 " need ae to finish up, original_last_aeq = 0x%04X." 3162 " last_aeq = 0x%04X, scheduling timer.\n", 3163 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3164 original_last_aeq, nesqp->last_aeq); 3165 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0); 3166 } 3167 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3168 } else { 3169 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3170 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d)," 3171 " need ae to finish up, original_last_aeq = 0x%04X." 3172 " last_aeq = 0x%04X.\n", 3173 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3174 original_last_aeq, nesqp->last_aeq); 3175 } 3176 } 3177 } else { 3178 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up," 3179 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", 3180 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3181 original_last_aeq, nesqp->last_aeq); 3182 } 3183 } else { 3184 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up," 3185 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", 3186 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3187 original_last_aeq, nesqp->last_aeq); 3188 } 3189 3190 err = 0; 3191 3192 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n", 3193 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount)); 3194 3195 return err; 3196} 3197 3198 3199/** 3200 * nes_muticast_attach 3201 */ 3202static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 3203{ 3204 nes_debug(NES_DBG_INIT, "\n"); 3205 return -ENOSYS; 3206} 3207 3208 3209/** 3210 * nes_multicast_detach 3211 */ 3212static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 3213{ 3214 nes_debug(NES_DBG_INIT, "\n"); 3215 return -ENOSYS; 3216} 3217 3218 3219/** 3220 * nes_process_mad 3221 */ 3222static int nes_process_mad(struct ib_device *ibdev, int mad_flags, 3223 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh, 3224 struct ib_mad *in_mad, struct ib_mad *out_mad) 3225{ 3226 nes_debug(NES_DBG_INIT, "\n"); 3227 return -ENOSYS; 3228} 3229 3230static inline void 3231fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey) 3232{ 3233 int sge_index; 3234 int total_payload_length = 0; 3235 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) { 3236 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4), 3237 ib_wr->sg_list[sge_index].addr); 3238 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4), 3239 ib_wr->sg_list[sge_index].length); 3240 if (uselkey) 3241 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 3242 (ib_wr->sg_list[sge_index].lkey)); 3243 else 3244 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0); 3245 3246 total_payload_length += ib_wr->sg_list[sge_index].length; 3247 } 3248 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n", 3249 total_payload_length); 3250 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX, 3251 total_payload_length); 3252} 3253 3254/** 3255 * nes_post_send 3256 */ 3257static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr, 3258 struct ib_send_wr **bad_wr) 3259{ 3260 u64 u64temp; 3261 unsigned long flags = 0; 3262 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); 3263 struct nes_device *nesdev = nesvnic->nesdev; 3264 struct nes_qp *nesqp = to_nesqp(ibqp); 3265 struct nes_hw_qp_wqe *wqe; 3266 int err = 0; 3267 u32 qsize = nesqp->hwqp.sq_size; 3268 u32 head; 3269 u32 wqe_misc = 0; 3270 u32 wqe_count = 0; 3271 u32 counter; 3272 3273 if (nesqp->ibqp_state > IB_QPS_RTS) { 3274 err = -EINVAL; 3275 goto out; 3276 } 3277 3278 spin_lock_irqsave(&nesqp->lock, flags); 3279 3280 head = nesqp->hwqp.sq_head; 3281 3282 while (ib_wr) { 3283 /* Check for QP error */ 3284 if (nesqp->term_flags) { 3285 err = -EINVAL; 3286 break; 3287 } 3288 3289 /* Check for SQ overflow */ 3290 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) { 3291 err = -EINVAL; 3292 break; 3293 } 3294 3295 wqe = &nesqp->hwqp.sq_vbase[head]; 3296 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n", 3297 nesqp->hwqp.qp_id, wqe, head); */ 3298 nes_fill_init_qp_wqe(wqe, nesqp, head); 3299 u64temp = (u64)(ib_wr->wr_id); 3300 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, 3301 u64temp); 3302 switch (ib_wr->opcode) { 3303 case IB_WR_SEND: 3304 case IB_WR_SEND_WITH_INV: 3305 if (IB_WR_SEND == ib_wr->opcode) { 3306 if (ib_wr->send_flags & IB_SEND_SOLICITED) 3307 wqe_misc = NES_IWARP_SQ_OP_SENDSE; 3308 else 3309 wqe_misc = NES_IWARP_SQ_OP_SEND; 3310 } else { 3311 if (ib_wr->send_flags & IB_SEND_SOLICITED) 3312 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV; 3313 else 3314 wqe_misc = NES_IWARP_SQ_OP_SENDINV; 3315 3316 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX, 3317 ib_wr->ex.invalidate_rkey); 3318 } 3319 3320 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) { 3321 err = -EINVAL; 3322 break; 3323 } 3324 3325 if (ib_wr->send_flags & IB_SEND_FENCE) 3326 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE; 3327 3328 if ((ib_wr->send_flags & IB_SEND_INLINE) && 3329 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) && 3330 (ib_wr->sg_list[0].length <= 64)) { 3331 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX], 3332 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length); 3333 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX, 3334 ib_wr->sg_list[0].length); 3335 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA; 3336 } else { 3337 fill_wqe_sg_send(wqe, ib_wr, 1); 3338 } 3339 3340 break; 3341 case IB_WR_RDMA_WRITE: 3342 wqe_misc = NES_IWARP_SQ_OP_RDMAW; 3343 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) { 3344 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n", 3345 ib_wr->num_sge, nesdev->nesadapter->max_sge); 3346 err = -EINVAL; 3347 break; 3348 } 3349 3350 if (ib_wr->send_flags & IB_SEND_FENCE) 3351 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE; 3352 3353 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX, 3354 ib_wr->wr.rdma.rkey); 3355 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX, 3356 ib_wr->wr.rdma.remote_addr); 3357 3358 if ((ib_wr->send_flags & IB_SEND_INLINE) && 3359 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) && 3360 (ib_wr->sg_list[0].length <= 64)) { 3361 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX], 3362 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length); 3363 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX, 3364 ib_wr->sg_list[0].length); 3365 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA; 3366 } else { 3367 fill_wqe_sg_send(wqe, ib_wr, 1); 3368 } 3369 3370 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = 3371 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]; 3372 break; 3373 case IB_WR_RDMA_READ: 3374 case IB_WR_RDMA_READ_WITH_INV: 3375 /* iWARP only supports 1 sge for RDMA reads */ 3376 if (ib_wr->num_sge > 1) { 3377 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n", 3378 ib_wr->num_sge); 3379 err = -EINVAL; 3380 break; 3381 } 3382 if (ib_wr->opcode == IB_WR_RDMA_READ) { 3383 wqe_misc = NES_IWARP_SQ_OP_RDMAR; 3384 } else { 3385 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV; 3386 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX, 3387 ib_wr->ex.invalidate_rkey); 3388 } 3389 3390 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX, 3391 ib_wr->wr.rdma.remote_addr); 3392 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX, 3393 ib_wr->wr.rdma.rkey); 3394 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX, 3395 ib_wr->sg_list->length); 3396 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX, 3397 ib_wr->sg_list->addr); 3398 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX, 3399 ib_wr->sg_list->lkey); 3400 break; 3401 case IB_WR_LOCAL_INV: 3402 wqe_misc = NES_IWARP_SQ_OP_LOCINV; 3403 set_wqe_32bit_value(wqe->wqe_words, 3404 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX, 3405 ib_wr->ex.invalidate_rkey); 3406 break; 3407 case IB_WR_FAST_REG_MR: 3408 { 3409 int i; 3410 int flags = ib_wr->wr.fast_reg.access_flags; 3411 struct nes_ib_fast_reg_page_list *pnesfrpl = 3412 container_of(ib_wr->wr.fast_reg.page_list, 3413 struct nes_ib_fast_reg_page_list, 3414 ibfrpl); 3415 u64 *src_page_list = pnesfrpl->ibfrpl.page_list; 3416 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva; 3417 3418 if (ib_wr->wr.fast_reg.page_list_len > 3419 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) { 3420 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n"); 3421 err = -EINVAL; 3422 break; 3423 } 3424 wqe_misc = NES_IWARP_SQ_OP_FAST_REG; 3425 set_wqe_64bit_value(wqe->wqe_words, 3426 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX, 3427 ib_wr->wr.fast_reg.iova_start); 3428 set_wqe_32bit_value(wqe->wqe_words, 3429 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX, 3430 ib_wr->wr.fast_reg.length); 3431 set_wqe_32bit_value(wqe->wqe_words, 3432 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX, 3433 ib_wr->wr.fast_reg.rkey); 3434 /* Set page size: */ 3435 if (ib_wr->wr.fast_reg.page_shift == 12) { 3436 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K; 3437 } else if (ib_wr->wr.fast_reg.page_shift == 21) { 3438 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M; 3439 } else { 3440 nes_debug(NES_DBG_IW_TX, "Invalid page shift," 3441 " ib_wr=%u, max=1\n", ib_wr->num_sge); 3442 err = -EINVAL; 3443 break; 3444 } 3445 /* Set access_flags */ 3446 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ; 3447 if (flags & IB_ACCESS_LOCAL_WRITE) 3448 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE; 3449 3450 if (flags & IB_ACCESS_REMOTE_WRITE) 3451 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE; 3452 3453 if (flags & IB_ACCESS_REMOTE_READ) 3454 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ; 3455 3456 if (flags & IB_ACCESS_MW_BIND) 3457 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND; 3458 3459 /* Fill in PBL info: */ 3460 if (ib_wr->wr.fast_reg.page_list_len > 3461 pnesfrpl->ibfrpl.max_page_list_len) { 3462 nes_debug(NES_DBG_IW_TX, "Invalid page list length," 3463 " ib_wr=%p, value=%u, max=%u\n", 3464 ib_wr, ib_wr->wr.fast_reg.page_list_len, 3465 pnesfrpl->ibfrpl.max_page_list_len); 3466 err = -EINVAL; 3467 break; 3468 } 3469 3470 set_wqe_64bit_value(wqe->wqe_words, 3471 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX, 3472 pnesfrpl->nes_wqe_pbl.paddr); 3473 3474 set_wqe_32bit_value(wqe->wqe_words, 3475 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX, 3476 ib_wr->wr.fast_reg.page_list_len * 8); 3477 3478 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++) 3479 dst_page_list[i] = cpu_to_le64(src_page_list[i]); 3480 3481 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %p, " 3482 "length: %d, rkey: %0x, pgl_paddr: %p, " 3483 "page_list_len: %u, wqe_misc: %x\n", 3484 (void *)ib_wr->wr.fast_reg.iova_start, 3485 ib_wr->wr.fast_reg.length, 3486 ib_wr->wr.fast_reg.rkey, 3487 (void *)pnesfrpl->nes_wqe_pbl.paddr, 3488 ib_wr->wr.fast_reg.page_list_len, 3489 wqe_misc); 3490 break; 3491 } 3492 default: 3493 /* error */ 3494 err = -EINVAL; 3495 break; 3496 } 3497 3498 if (err) 3499 break; 3500 3501 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all) 3502 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL; 3503 3504 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc); 3505 3506 ib_wr = ib_wr->next; 3507 head++; 3508 wqe_count++; 3509 if (head >= qsize) 3510 head = 0; 3511 3512 } 3513 3514 nesqp->hwqp.sq_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, 3520 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id); 3521 } 3522 3523 spin_unlock_irqrestore(&nesqp->lock, flags); 3524 3525out: 3526 if (err) 3527 *bad_wr = ib_wr; 3528 return err; 3529} 3530 3531 3532/** 3533 * nes_post_recv 3534 */ 3535static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr, 3536 struct ib_recv_wr **bad_wr) 3537{ 3538 u64 u64temp; 3539 unsigned long flags = 0; 3540 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); 3541 struct nes_device *nesdev = nesvnic->nesdev; 3542 struct nes_qp *nesqp = to_nesqp(ibqp); 3543 struct nes_hw_qp_wqe *wqe; 3544 int err = 0; 3545 int sge_index; 3546 u32 qsize = nesqp->hwqp.rq_size; 3547 u32 head; 3548 u32 wqe_count = 0; 3549 u32 counter; 3550 u32 total_payload_length; 3551 3552 if (nesqp->ibqp_state > IB_QPS_RTS) { 3553 err = -EINVAL; 3554 goto out; 3555 } 3556 3557 spin_lock_irqsave(&nesqp->lock, flags); 3558 3559 head = nesqp->hwqp.rq_head; 3560 3561 while (ib_wr) { 3562 /* Check for QP error */ 3563 if (nesqp->term_flags) { 3564 err = -EINVAL; 3565 break; 3566 } 3567 3568 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) { 3569 err = -EINVAL; 3570 break; 3571 } 3572 /* Check for RQ overflow */ 3573 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) { 3574 err = -EINVAL; 3575 break; 3576 } 3577 3578 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge); 3579 wqe = &nesqp->hwqp.rq_vbase[head]; 3580 3581 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n", 3582 nesqp->hwqp.qp_id, wqe, head); */ 3583 nes_fill_init_qp_wqe(wqe, nesqp, head); 3584 u64temp = (u64)(ib_wr->wr_id); 3585 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, 3586 u64temp); 3587 total_payload_length = 0; 3588 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) { 3589 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4), 3590 ib_wr->sg_list[sge_index].addr); 3591 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4), 3592 ib_wr->sg_list[sge_index].length); 3593 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4), 3594 ib_wr->sg_list[sge_index].lkey); 3595 3596 total_payload_length += ib_wr->sg_list[sge_index].length; 3597 } 3598 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX, 3599 total_payload_length); 3600 3601 ib_wr = ib_wr->next; 3602 head++; 3603 wqe_count++; 3604 if (head >= qsize) 3605 head = 0; 3606 } 3607 3608 nesqp->hwqp.rq_head = head; 3609 barrier(); 3610 while (wqe_count) { 3611 counter = min(wqe_count, ((u32)255)); 3612 wqe_count -= counter; 3613 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id); 3614 } 3615 3616 spin_unlock_irqrestore(&nesqp->lock, flags); 3617 3618out: 3619 if (err) 3620 *bad_wr = ib_wr; 3621 return err; 3622} 3623 3624 3625/** 3626 * nes_poll_cq 3627 */ 3628static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry) 3629{ 3630 u64 u64temp; 3631 u64 wrid; 3632 unsigned long flags = 0; 3633 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device); 3634 struct nes_device *nesdev = nesvnic->nesdev; 3635 struct nes_cq *nescq = to_nescq(ibcq); 3636 struct nes_qp *nesqp; 3637 struct nes_hw_cqe cqe; 3638 u32 head; 3639 u32 wq_tail = 0; 3640 u32 cq_size; 3641 u32 cqe_count = 0; 3642 u32 wqe_index; 3643 u32 u32temp; 3644 u32 move_cq_head = 1; 3645 u32 err_code; 3646 3647 nes_debug(NES_DBG_CQ, "\n"); 3648 3649 spin_lock_irqsave(&nescq->lock, flags); 3650 3651 head = nescq->hw_cq.cq_head; 3652 cq_size = nescq->hw_cq.cq_size; 3653 3654 while (cqe_count < num_entries) { 3655 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) & 3656 NES_CQE_VALID) == 0) 3657 break; 3658 3659 /* 3660 * Make sure we read CQ entry contents *after* 3661 * we've checked the valid bit. 3662 */ 3663 rmb(); 3664 3665 cqe = nescq->hw_cq.cq_vbase[head]; 3666 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]); 3667 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1); 3668 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1); 3669 /* parse CQE, get completion context from WQE (either rq or sq) */ 3670 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) | 3671 ((u64)u32temp); 3672 3673 if (u64temp) { 3674 nesqp = (struct nes_qp *)(unsigned long)u64temp; 3675 memset(entry, 0, sizeof *entry); 3676 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) { 3677 entry->status = IB_WC_SUCCESS; 3678 } else { 3679 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]); 3680 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) { 3681 entry->status = err_code & 0x0000ffff; 3682 3683 /* The rest of the cqe's will be marked as flushed */ 3684 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] = 3685 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) | 3686 NES_IWARP_CQE_MINOR_FLUSH); 3687 } else 3688 entry->status = IB_WC_WR_FLUSH_ERR; 3689 } 3690 3691 entry->qp = &nesqp->ibqp; 3692 entry->src_qp = nesqp->hwqp.qp_id; 3693 3694 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) { 3695 if (nesqp->skip_lsmm) { 3696 nesqp->skip_lsmm = 0; 3697 nesqp->hwqp.sq_tail++; 3698 } 3699 3700 /* Working on a SQ Completion*/ 3701 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index]. 3702 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) | 3703 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index]. 3704 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX]))); 3705 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index]. 3706 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]); 3707 3708 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index]. 3709 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) { 3710 case NES_IWARP_SQ_OP_RDMAW: 3711 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n"); 3712 entry->opcode = IB_WC_RDMA_WRITE; 3713 break; 3714 case NES_IWARP_SQ_OP_RDMAR: 3715 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n"); 3716 entry->opcode = IB_WC_RDMA_READ; 3717 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index]. 3718 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]); 3719 break; 3720 case NES_IWARP_SQ_OP_SENDINV: 3721 case NES_IWARP_SQ_OP_SENDSEINV: 3722 case NES_IWARP_SQ_OP_SEND: 3723 case NES_IWARP_SQ_OP_SENDSE: 3724 nes_debug(NES_DBG_CQ, "Operation = Send.\n"); 3725 entry->opcode = IB_WC_SEND; 3726 break; 3727 case NES_IWARP_SQ_OP_LOCINV: 3728 entry->opcode = IB_WR_LOCAL_INV; 3729 break; 3730 case NES_IWARP_SQ_OP_FAST_REG: 3731 entry->opcode = IB_WC_FAST_REG_MR; 3732 break; 3733 } 3734 3735 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1); 3736 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) { 3737 move_cq_head = 0; 3738 wq_tail = nesqp->hwqp.sq_tail; 3739 } 3740 } else { 3741 /* Working on a RQ Completion*/ 3742 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]); 3743 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) | 3744 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32); 3745 entry->opcode = IB_WC_RECV; 3746 3747 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1); 3748 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) { 3749 move_cq_head = 0; 3750 wq_tail = nesqp->hwqp.rq_tail; 3751 } 3752 } 3753 3754 entry->wr_id = wrid; 3755 entry++; 3756 cqe_count++; 3757 } 3758 3759 if (move_cq_head) { 3760 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0; 3761 if (++head >= cq_size) 3762 head = 0; 3763 nescq->polled_completions++; 3764 3765 if ((nescq->polled_completions > (cq_size / 2)) || 3766 (nescq->polled_completions == 255)) { 3767 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes" 3768 " are pending %u of %u.\n", 3769 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size); 3770 nes_write32(nesdev->regs+NES_CQE_ALLOC, 3771 nescq->hw_cq.cq_number | (nescq->polled_completions << 16)); 3772 nescq->polled_completions = 0; 3773 } 3774 } else { 3775 /* Update the wqe index and set status to flush */ 3776 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]); 3777 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail; 3778 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 3779 cpu_to_le32(wqe_index); 3780 move_cq_head = 1; /* ready for next pass */ 3781 } 3782 } 3783 3784 if (nescq->polled_completions) { 3785 nes_write32(nesdev->regs+NES_CQE_ALLOC, 3786 nescq->hw_cq.cq_number | (nescq->polled_completions << 16)); 3787 nescq->polled_completions = 0; 3788 } 3789 3790 nescq->hw_cq.cq_head = head; 3791 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n", 3792 cqe_count, nescq->hw_cq.cq_number); 3793 3794 spin_unlock_irqrestore(&nescq->lock, flags); 3795 3796 return cqe_count; 3797} 3798 3799 3800/** 3801 * nes_req_notify_cq 3802 */ 3803static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags) 3804 { 3805 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device); 3806 struct nes_device *nesdev = nesvnic->nesdev; 3807 struct nes_cq *nescq = to_nescq(ibcq); 3808 u32 cq_arm; 3809 3810 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n", 3811 nescq->hw_cq.cq_number); 3812 3813 cq_arm = nescq->hw_cq.cq_number; 3814 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP) 3815 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT; 3816 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED) 3817 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE; 3818 else 3819 return -EINVAL; 3820 3821 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm); 3822 nes_read32(nesdev->regs+NES_CQE_ALLOC); 3823 3824 return 0; 3825} 3826 3827 3828/** 3829 * nes_init_ofa_device 3830 */ 3831struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev) 3832{ 3833 struct nes_ib_device *nesibdev; 3834 struct nes_vnic *nesvnic = netdev_priv(netdev); 3835 struct nes_device *nesdev = nesvnic->nesdev; 3836 3837 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device)); 3838 if (nesibdev == NULL) { 3839 return NULL; 3840 } 3841 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX); 3842 nesibdev->ibdev.owner = THIS_MODULE; 3843 3844 nesibdev->ibdev.node_type = RDMA_NODE_RNIC; 3845 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid)); 3846 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6); 3847 3848 nesibdev->ibdev.uverbs_cmd_mask = 3849 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 3850 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 3851 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 3852 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 3853 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 3854 (1ull << IB_USER_VERBS_CMD_REG_MR) | 3855 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 3856 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 3857 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 3858 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 3859 (1ull << IB_USER_VERBS_CMD_CREATE_AH) | 3860 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | 3861 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 3862 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 3863 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 3864 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 3865 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 3866 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 3867 (1ull << IB_USER_VERBS_CMD_BIND_MW) | 3868 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) | 3869 (1ull << IB_USER_VERBS_CMD_POST_RECV) | 3870 (1ull << IB_USER_VERBS_CMD_POST_SEND); 3871 3872 nesibdev->ibdev.phys_port_cnt = 1; 3873 nesibdev->ibdev.num_comp_vectors = 1; 3874 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev; 3875 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev; 3876 nesibdev->ibdev.query_device = nes_query_device; 3877 nesibdev->ibdev.query_port = nes_query_port; 3878 nesibdev->ibdev.modify_port = nes_modify_port; 3879 nesibdev->ibdev.query_pkey = nes_query_pkey; 3880 nesibdev->ibdev.query_gid = nes_query_gid; 3881 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext; 3882 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext; 3883 nesibdev->ibdev.mmap = nes_mmap; 3884 nesibdev->ibdev.alloc_pd = nes_alloc_pd; 3885 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd; 3886 nesibdev->ibdev.create_ah = nes_create_ah; 3887 nesibdev->ibdev.destroy_ah = nes_destroy_ah; 3888 nesibdev->ibdev.create_qp = nes_create_qp; 3889 nesibdev->ibdev.modify_qp = nes_modify_qp; 3890 nesibdev->ibdev.query_qp = nes_query_qp; 3891 nesibdev->ibdev.destroy_qp = nes_destroy_qp; 3892 nesibdev->ibdev.create_cq = nes_create_cq; 3893 nesibdev->ibdev.destroy_cq = nes_destroy_cq; 3894 nesibdev->ibdev.poll_cq = nes_poll_cq; 3895 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr; 3896 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr; 3897 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr; 3898 nesibdev->ibdev.dereg_mr = nes_dereg_mr; 3899 nesibdev->ibdev.alloc_mw = nes_alloc_mw; 3900 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw; 3901 nesibdev->ibdev.bind_mw = nes_bind_mw; 3902 3903 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr; 3904 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list; 3905 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list; 3906 3907 nesibdev->ibdev.attach_mcast = nes_multicast_attach; 3908 nesibdev->ibdev.detach_mcast = nes_multicast_detach; 3909 nesibdev->ibdev.process_mad = nes_process_mad; 3910 3911 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq; 3912 nesibdev->ibdev.post_send = nes_post_send; 3913 nesibdev->ibdev.post_recv = nes_post_recv; 3914 3915 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL); 3916 if (nesibdev->ibdev.iwcm == NULL) { 3917 ib_dealloc_device(&nesibdev->ibdev); 3918 return NULL; 3919 } 3920 nesibdev->ibdev.iwcm->add_ref = nes_add_ref; 3921 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref; 3922 nesibdev->ibdev.iwcm->get_qp = nes_get_qp; 3923 nesibdev->ibdev.iwcm->connect = nes_connect; 3924 nesibdev->ibdev.iwcm->accept = nes_accept; 3925 nesibdev->ibdev.iwcm->reject = nes_reject; 3926 nesibdev->ibdev.iwcm->create_listen = nes_create_listen; 3927 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen; 3928 3929 return nesibdev; 3930} 3931 3932 3933/** 3934 * nes_destroy_ofa_device 3935 */ 3936void nes_destroy_ofa_device(struct nes_ib_device *nesibdev) 3937{ 3938 if (nesibdev == NULL) 3939 return; 3940 3941 nes_unregister_ofa_device(nesibdev); 3942 3943 kfree(nesibdev->ibdev.iwcm); 3944 ib_dealloc_device(&nesibdev->ibdev); 3945} 3946 3947 3948/** 3949 * nes_register_ofa_device 3950 */ 3951int nes_register_ofa_device(struct nes_ib_device *nesibdev) 3952{ 3953 struct nes_vnic *nesvnic = nesibdev->nesvnic; 3954 struct nes_device *nesdev = nesvnic->nesdev; 3955 struct nes_adapter *nesadapter = nesdev->nesadapter; 3956 int i, ret; 3957 3958 ret = ib_register_device(&nesvnic->nesibdev->ibdev); 3959 if (ret) { 3960 return ret; 3961 } 3962 3963 /* Get the resources allocated to this device */ 3964 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count; 3965 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count; 3966 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count; 3967 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count; 3968 3969 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) { 3970 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]); 3971 if (ret) { 3972 while (i > 0) { 3973 i--; 3974 device_remove_file(&nesibdev->ibdev.dev, 3975 nes_dev_attributes[i]); 3976 } 3977 ib_unregister_device(&nesibdev->ibdev); 3978 return ret; 3979 } 3980 } 3981 3982 nesvnic->of_device_registered = 1; 3983 3984 return 0; 3985} 3986 3987 3988/** 3989 * nes_unregister_ofa_device 3990 */ 3991static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev) 3992{ 3993 struct nes_vnic *nesvnic = nesibdev->nesvnic; 3994 int i; 3995 3996 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) { 3997 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]); 3998 } 3999 4000 if (nesvnic->of_device_registered) { 4001 ib_unregister_device(&nesibdev->ibdev); 4002 } 4003 4004 nesvnic->of_device_registered = 0; 4005} 4006