nes_verbs.c revision 10e1b54bbb51ac134c51996022f3bd10579fbd3b
1/* 2 * Copyright (c) 2006 - 2009 Intel Corporation. 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 <linux/slab.h> 39#include <asm/byteorder.h> 40 41#include <rdma/ib_verbs.h> 42#include <rdma/iw_cm.h> 43#include <rdma/ib_user_verbs.h> 44 45#include "nes.h" 46 47#include <rdma/ib_umem.h> 48 49atomic_t mod_qp_timouts; 50atomic_t qps_created; 51atomic_t sw_qps_destroyed; 52 53static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev); 54 55/** 56 * nes_alloc_mw 57 */ 58static struct ib_mw *nes_alloc_mw(struct ib_pd *ibpd) { 59 struct nes_pd *nespd = to_nespd(ibpd); 60 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); 61 struct nes_device *nesdev = nesvnic->nesdev; 62 struct nes_adapter *nesadapter = nesdev->nesadapter; 63 struct nes_cqp_request *cqp_request; 64 struct nes_mr *nesmr; 65 struct ib_mw *ibmw; 66 struct nes_hw_cqp_wqe *cqp_wqe; 67 int ret; 68 u32 stag; 69 u32 stag_index = 0; 70 u32 next_stag_index = 0; 71 u32 driver_key = 0; 72 u8 stag_key = 0; 73 74 get_random_bytes(&next_stag_index, sizeof(next_stag_index)); 75 stag_key = (u8)next_stag_index; 76 77 driver_key = 0; 78 79 next_stag_index >>= 8; 80 next_stag_index %= nesadapter->max_mr; 81 82 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, 83 nesadapter->max_mr, &stag_index, &next_stag_index); 84 if (ret) { 85 return ERR_PTR(ret); 86 } 87 88 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); 89 if (!nesmr) { 90 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 91 return ERR_PTR(-ENOMEM); 92 } 93 94 stag = stag_index << 8; 95 stag |= driver_key; 96 stag += (u32)stag_key; 97 98 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, index = 0x%08X\n", 99 stag, stag_index); 100 101 /* Register the region with the adapter */ 102 cqp_request = nes_get_cqp_request(nesdev); 103 if (cqp_request == NULL) { 104 kfree(nesmr); 105 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 106 return ERR_PTR(-ENOMEM); 107 } 108 109 cqp_request->waiting = 1; 110 cqp_wqe = &cqp_request->cqp_wqe; 111 112 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = 113 cpu_to_le32( NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_RIGHTS_REMOTE_READ | 114 NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_VA_TO | 115 NES_CQP_STAG_REM_ACC_EN); 116 117 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 118 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX, (nespd->pd_id & 0x00007fff)); 119 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag); 120 121 atomic_set(&cqp_request->refcount, 2); 122 nes_post_cqp_request(nesdev, cqp_request); 123 124 /* Wait for CQP */ 125 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0), 126 NES_EVENT_TIMEOUT); 127 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u," 128 " CQP Major:Minor codes = 0x%04X:0x%04X.\n", 129 stag, ret, cqp_request->major_code, cqp_request->minor_code); 130 if ((!ret) || (cqp_request->major_code)) { 131 nes_put_cqp_request(nesdev, cqp_request); 132 kfree(nesmr); 133 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 134 if (!ret) { 135 return ERR_PTR(-ETIME); 136 } else { 137 return ERR_PTR(-ENOMEM); 138 } 139 } 140 nes_put_cqp_request(nesdev, cqp_request); 141 142 nesmr->ibmw.rkey = stag; 143 nesmr->mode = IWNES_MEMREG_TYPE_MW; 144 ibmw = &nesmr->ibmw; 145 nesmr->pbl_4k = 0; 146 nesmr->pbls_used = 0; 147 148 return ibmw; 149} 150 151 152/** 153 * nes_dealloc_mw 154 */ 155static int nes_dealloc_mw(struct ib_mw *ibmw) 156{ 157 struct nes_mr *nesmr = to_nesmw(ibmw); 158 struct nes_vnic *nesvnic = to_nesvnic(ibmw->device); 159 struct nes_device *nesdev = nesvnic->nesdev; 160 struct nes_adapter *nesadapter = nesdev->nesadapter; 161 struct nes_hw_cqp_wqe *cqp_wqe; 162 struct nes_cqp_request *cqp_request; 163 int err = 0; 164 int ret; 165 166 /* Deallocate the window with the adapter */ 167 cqp_request = nes_get_cqp_request(nesdev); 168 if (cqp_request == NULL) { 169 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); 170 return -ENOMEM; 171 } 172 cqp_request->waiting = 1; 173 cqp_wqe = &cqp_request->cqp_wqe; 174 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 175 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, NES_CQP_DEALLOCATE_STAG); 176 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ibmw->rkey); 177 178 atomic_set(&cqp_request->refcount, 2); 179 nes_post_cqp_request(nesdev, cqp_request); 180 181 /* Wait for CQP */ 182 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X to complete.\n", 183 ibmw->rkey); 184 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), 185 NES_EVENT_TIMEOUT); 186 nes_debug(NES_DBG_MR, "Deallocate STag completed, wait_event_timeout ret = %u," 187 " CQP Major:Minor codes = 0x%04X:0x%04X.\n", 188 ret, cqp_request->major_code, cqp_request->minor_code); 189 if (!ret) 190 err = -ETIME; 191 else if (cqp_request->major_code) 192 err = -EIO; 193 194 nes_put_cqp_request(nesdev, cqp_request); 195 196 nes_free_resource(nesadapter, nesadapter->allocated_mrs, 197 (ibmw->rkey & 0x0fffff00) >> 8); 198 kfree(nesmr); 199 200 return err; 201} 202 203 204/** 205 * nes_bind_mw 206 */ 207static int nes_bind_mw(struct ib_qp *ibqp, struct ib_mw *ibmw, 208 struct ib_mw_bind *ibmw_bind) 209{ 210 u64 u64temp; 211 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); 212 struct nes_device *nesdev = nesvnic->nesdev; 213 /* struct nes_mr *nesmr = to_nesmw(ibmw); */ 214 struct nes_qp *nesqp = to_nesqp(ibqp); 215 struct nes_hw_qp_wqe *wqe; 216 unsigned long flags = 0; 217 u32 head; 218 u32 wqe_misc = 0; 219 u32 qsize; 220 221 if (nesqp->ibqp_state > IB_QPS_RTS) 222 return -EINVAL; 223 224 spin_lock_irqsave(&nesqp->lock, flags); 225 226 head = nesqp->hwqp.sq_head; 227 qsize = nesqp->hwqp.sq_tail; 228 229 /* Check for SQ overflow */ 230 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) { 231 spin_unlock_irqrestore(&nesqp->lock, flags); 232 return -ENOMEM; 233 } 234 235 wqe = &nesqp->hwqp.sq_vbase[head]; 236 /* nes_debug(NES_DBG_MR, "processing sq wqe at %p, head = %u.\n", wqe, head); */ 237 nes_fill_init_qp_wqe(wqe, nesqp, head); 238 u64temp = ibmw_bind->wr_id; 239 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, u64temp); 240 wqe_misc = NES_IWARP_SQ_OP_BIND; 241 242 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE; 243 244 if (ibmw_bind->send_flags & IB_SEND_SIGNALED) 245 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL; 246 247 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_WRITE) { 248 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE; 249 } 250 if (ibmw_bind->mw_access_flags & IB_ACCESS_REMOTE_READ) { 251 wqe_misc |= NES_CQP_STAG_RIGHTS_REMOTE_READ; 252 } 253 254 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_MISC_IDX, wqe_misc); 255 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MR_IDX, ibmw_bind->mr->lkey); 256 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_MW_IDX, ibmw->rkey); 257 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_LENGTH_LOW_IDX, 258 ibmw_bind->length); 259 wqe->wqe_words[NES_IWARP_SQ_BIND_WQE_LENGTH_HIGH_IDX] = 0; 260 u64temp = (u64)ibmw_bind->addr; 261 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_BIND_WQE_VA_FBO_LOW_IDX, u64temp); 262 263 head++; 264 if (head >= qsize) 265 head = 0; 266 267 nesqp->hwqp.sq_head = head; 268 barrier(); 269 270 nes_write32(nesdev->regs+NES_WQE_ALLOC, 271 (1 << 24) | 0x00800000 | nesqp->hwqp.qp_id); 272 273 spin_unlock_irqrestore(&nesqp->lock, flags); 274 275 return 0; 276} 277 278 279/* 280 * nes_alloc_fast_mr 281 */ 282static int alloc_fast_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd, 283 u32 stag, u32 page_count) 284{ 285 struct nes_hw_cqp_wqe *cqp_wqe; 286 struct nes_cqp_request *cqp_request; 287 unsigned long flags; 288 int ret; 289 struct nes_adapter *nesadapter = nesdev->nesadapter; 290 u32 opcode = 0; 291 u16 major_code; 292 u64 region_length = page_count * PAGE_SIZE; 293 294 295 cqp_request = nes_get_cqp_request(nesdev); 296 if (cqp_request == NULL) { 297 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); 298 return -ENOMEM; 299 } 300 nes_debug(NES_DBG_MR, "alloc_fast_reg_mr: page_count = %d, " 301 "region_length = %llu\n", 302 page_count, region_length); 303 cqp_request->waiting = 1; 304 cqp_wqe = &cqp_request->cqp_wqe; 305 306 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 307 if (nesadapter->free_4kpbl > 0) { 308 nesadapter->free_4kpbl--; 309 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 310 } else { 311 /* No 4kpbl's available: */ 312 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 313 nes_debug(NES_DBG_MR, "Out of Pbls\n"); 314 nes_free_cqp_request(nesdev, cqp_request); 315 return -ENOMEM; 316 } 317 318 opcode = NES_CQP_ALLOCATE_STAG | NES_CQP_STAG_MR | 319 NES_CQP_STAG_PBL_BLK_SIZE | NES_CQP_STAG_VA_TO | 320 NES_CQP_STAG_REM_ACC_EN; 321 /* 322 * The current OFED API does not support the zero based TO option. 323 * If added then need to changed the NES_CQP_STAG_VA* option. Also, 324 * the API does not support that ability to have the MR set for local 325 * access only when created and not allow the SQ op to override. Given 326 * this the remote enable must be set here. 327 */ 328 329 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 330 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); 331 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, 1); 332 333 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] = 334 cpu_to_le32((u32)(region_length >> 8) & 0xff000000); 335 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |= 336 cpu_to_le32(nespd->pd_id & 0x00007fff); 337 338 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag); 339 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, 0); 340 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, 0); 341 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, 0); 342 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (page_count * 8)); 343 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE); 344 barrier(); 345 346 atomic_set(&cqp_request->refcount, 2); 347 nes_post_cqp_request(nesdev, cqp_request); 348 349 /* Wait for CQP */ 350 ret = wait_event_timeout(cqp_request->waitq, 351 (0 != cqp_request->request_done), 352 NES_EVENT_TIMEOUT); 353 354 nes_debug(NES_DBG_MR, "Allocate STag 0x%08X completed, " 355 "wait_event_timeout ret = %u, CQP Major:Minor codes = " 356 "0x%04X:0x%04X.\n", stag, ret, cqp_request->major_code, 357 cqp_request->minor_code); 358 major_code = cqp_request->major_code; 359 nes_put_cqp_request(nesdev, cqp_request); 360 361 if (!ret || major_code) { 362 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 363 nesadapter->free_4kpbl++; 364 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 365 } 366 367 if (!ret) 368 return -ETIME; 369 else if (major_code) 370 return -EIO; 371 return 0; 372} 373 374/* 375 * nes_alloc_fast_reg_mr 376 */ 377static struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int max_page_list_len) 378{ 379 struct nes_pd *nespd = to_nespd(ibpd); 380 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); 381 struct nes_device *nesdev = nesvnic->nesdev; 382 struct nes_adapter *nesadapter = nesdev->nesadapter; 383 384 u32 next_stag_index; 385 u8 stag_key = 0; 386 u32 driver_key = 0; 387 int err = 0; 388 u32 stag_index = 0; 389 struct nes_mr *nesmr; 390 u32 stag; 391 int ret; 392 struct ib_mr *ibmr; 393/* 394 * Note: Set to always use a fixed length single page entry PBL. This is to allow 395 * for the fast_reg_mr operation to always know the size of the PBL. 396 */ 397 if (max_page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) 398 return ERR_PTR(-E2BIG); 399 400 get_random_bytes(&next_stag_index, sizeof(next_stag_index)); 401 stag_key = (u8)next_stag_index; 402 next_stag_index >>= 8; 403 next_stag_index %= nesadapter->max_mr; 404 405 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, 406 nesadapter->max_mr, &stag_index, 407 &next_stag_index); 408 if (err) 409 return ERR_PTR(err); 410 411 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); 412 if (!nesmr) { 413 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 414 return ERR_PTR(-ENOMEM); 415 } 416 417 stag = stag_index << 8; 418 stag |= driver_key; 419 stag += (u32)stag_key; 420 421 nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n", 422 stag, stag_index); 423 424 ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_page_list_len); 425 426 if (ret == 0) { 427 nesmr->ibmr.rkey = stag; 428 nesmr->ibmr.lkey = stag; 429 nesmr->mode = IWNES_MEMREG_TYPE_FMEM; 430 ibmr = &nesmr->ibmr; 431 } else { 432 kfree(nesmr); 433 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 434 ibmr = ERR_PTR(-ENOMEM); 435 } 436 return ibmr; 437} 438 439/* 440 * nes_alloc_fast_reg_page_list 441 */ 442static struct ib_fast_reg_page_list *nes_alloc_fast_reg_page_list( 443 struct ib_device *ibdev, 444 int page_list_len) 445{ 446 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 447 struct nes_device *nesdev = nesvnic->nesdev; 448 struct ib_fast_reg_page_list *pifrpl; 449 struct nes_ib_fast_reg_page_list *pnesfrpl; 450 451 if (page_list_len > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) 452 return ERR_PTR(-E2BIG); 453 /* 454 * Allocate the ib_fast_reg_page_list structure, the 455 * nes_fast_bpl structure, and the PLB table. 456 */ 457 pnesfrpl = kmalloc(sizeof(struct nes_ib_fast_reg_page_list) + 458 page_list_len * sizeof(u64), GFP_KERNEL); 459 460 if (!pnesfrpl) 461 return ERR_PTR(-ENOMEM); 462 463 pifrpl = &pnesfrpl->ibfrpl; 464 pifrpl->page_list = &pnesfrpl->pbl; 465 pifrpl->max_page_list_len = page_list_len; 466 /* 467 * Allocate the WQE PBL 468 */ 469 pnesfrpl->nes_wqe_pbl.kva = pci_alloc_consistent(nesdev->pcidev, 470 page_list_len * sizeof(u64), 471 &pnesfrpl->nes_wqe_pbl.paddr); 472 473 if (!pnesfrpl->nes_wqe_pbl.kva) { 474 kfree(pnesfrpl); 475 return ERR_PTR(-ENOMEM); 476 } 477 nes_debug(NES_DBG_MR, "nes_alloc_fast_reg_pbl: nes_frpl = %p, " 478 "ibfrpl = %p, ibfrpl.page_list = %p, pbl.kva = %p, " 479 "pbl.paddr = %llx\n", pnesfrpl, &pnesfrpl->ibfrpl, 480 pnesfrpl->ibfrpl.page_list, pnesfrpl->nes_wqe_pbl.kva, 481 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr); 482 483 return pifrpl; 484} 485 486/* 487 * nes_free_fast_reg_page_list 488 */ 489static void nes_free_fast_reg_page_list(struct ib_fast_reg_page_list *pifrpl) 490{ 491 struct nes_vnic *nesvnic = to_nesvnic(pifrpl->device); 492 struct nes_device *nesdev = nesvnic->nesdev; 493 struct nes_ib_fast_reg_page_list *pnesfrpl; 494 495 pnesfrpl = container_of(pifrpl, struct nes_ib_fast_reg_page_list, ibfrpl); 496 /* 497 * Free the WQE PBL. 498 */ 499 pci_free_consistent(nesdev->pcidev, 500 pifrpl->max_page_list_len * sizeof(u64), 501 pnesfrpl->nes_wqe_pbl.kva, 502 pnesfrpl->nes_wqe_pbl.paddr); 503 /* 504 * Free the PBL structure 505 */ 506 kfree(pnesfrpl); 507} 508 509/** 510 * nes_query_device 511 */ 512static int nes_query_device(struct ib_device *ibdev, struct ib_device_attr *props) 513{ 514 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 515 struct nes_device *nesdev = nesvnic->nesdev; 516 struct nes_ib_device *nesibdev = nesvnic->nesibdev; 517 518 memset(props, 0, sizeof(*props)); 519 memcpy(&props->sys_image_guid, nesvnic->netdev->dev_addr, 6); 520 521 props->fw_ver = nesdev->nesadapter->firmware_version; 522 props->device_cap_flags = nesdev->nesadapter->device_cap_flags; 523 props->vendor_id = nesdev->nesadapter->vendor_id; 524 props->vendor_part_id = nesdev->nesadapter->vendor_part_id; 525 props->hw_ver = nesdev->nesadapter->hw_rev; 526 props->max_mr_size = 0x80000000; 527 props->max_qp = nesibdev->max_qp; 528 props->max_qp_wr = nesdev->nesadapter->max_qp_wr - 2; 529 props->max_sge = nesdev->nesadapter->max_sge; 530 props->max_cq = nesibdev->max_cq; 531 props->max_cqe = nesdev->nesadapter->max_cqe; 532 props->max_mr = nesibdev->max_mr; 533 props->max_mw = nesibdev->max_mr; 534 props->max_pd = nesibdev->max_pd; 535 props->max_sge_rd = 1; 536 switch (nesdev->nesadapter->max_irrq_wr) { 537 case 0: 538 props->max_qp_rd_atom = 2; 539 break; 540 case 1: 541 props->max_qp_rd_atom = 8; 542 break; 543 case 2: 544 props->max_qp_rd_atom = 32; 545 break; 546 case 3: 547 props->max_qp_rd_atom = 64; 548 break; 549 default: 550 props->max_qp_rd_atom = 0; 551 } 552 props->max_qp_init_rd_atom = props->max_qp_rd_atom; 553 props->atomic_cap = IB_ATOMIC_NONE; 554 props->max_map_per_fmr = 1; 555 556 return 0; 557} 558 559 560/** 561 * nes_query_port 562 */ 563static int nes_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) 564{ 565 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 566 struct net_device *netdev = nesvnic->netdev; 567 568 memset(props, 0, sizeof(*props)); 569 570 props->max_mtu = IB_MTU_4096; 571 572 if (netdev->mtu >= 4096) 573 props->active_mtu = IB_MTU_4096; 574 else if (netdev->mtu >= 2048) 575 props->active_mtu = IB_MTU_2048; 576 else if (netdev->mtu >= 1024) 577 props->active_mtu = IB_MTU_1024; 578 else if (netdev->mtu >= 512) 579 props->active_mtu = IB_MTU_512; 580 else 581 props->active_mtu = IB_MTU_256; 582 583 props->lid = 1; 584 props->lmc = 0; 585 props->sm_lid = 0; 586 props->sm_sl = 0; 587 if (netif_queue_stopped(netdev)) 588 props->state = IB_PORT_DOWN; 589 else if (nesvnic->linkup) 590 props->state = IB_PORT_ACTIVE; 591 else 592 props->state = IB_PORT_DOWN; 593 props->phys_state = 0; 594 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP | 595 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 596 props->gid_tbl_len = 1; 597 props->pkey_tbl_len = 1; 598 props->qkey_viol_cntr = 0; 599 props->active_width = IB_WIDTH_4X; 600 props->active_speed = 1; 601 props->max_msg_sz = 0x80000000; 602 603 return 0; 604} 605 606 607/** 608 * nes_query_pkey 609 */ 610static int nes_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 611{ 612 *pkey = 0; 613 return 0; 614} 615 616 617/** 618 * nes_query_gid 619 */ 620static int nes_query_gid(struct ib_device *ibdev, u8 port, 621 int index, union ib_gid *gid) 622{ 623 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 624 625 memset(&(gid->raw[0]), 0, sizeof(gid->raw)); 626 memcpy(&(gid->raw[0]), nesvnic->netdev->dev_addr, 6); 627 628 return 0; 629} 630 631 632/** 633 * nes_alloc_ucontext - Allocate the user context data structure. This keeps track 634 * of all objects associated with a particular user-mode client. 635 */ 636static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev, 637 struct ib_udata *udata) 638{ 639 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 640 struct nes_device *nesdev = nesvnic->nesdev; 641 struct nes_adapter *nesadapter = nesdev->nesadapter; 642 struct nes_alloc_ucontext_req req; 643 struct nes_alloc_ucontext_resp uresp; 644 struct nes_ucontext *nes_ucontext; 645 struct nes_ib_device *nesibdev = nesvnic->nesibdev; 646 647 648 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_alloc_ucontext_req))) { 649 printk(KERN_ERR PFX "Invalid structure size on allocate user context.\n"); 650 return ERR_PTR(-EINVAL); 651 } 652 653 if (req.userspace_ver != NES_ABI_USERSPACE_VER) { 654 printk(KERN_ERR PFX "Invalid userspace driver version detected. Detected version %d, should be %d\n", 655 req.userspace_ver, NES_ABI_USERSPACE_VER); 656 return ERR_PTR(-EINVAL); 657 } 658 659 660 memset(&uresp, 0, sizeof uresp); 661 662 uresp.max_qps = nesibdev->max_qp; 663 uresp.max_pds = nesibdev->max_pd; 664 uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2; 665 uresp.virtwq = nesadapter->virtwq; 666 uresp.kernel_ver = NES_ABI_KERNEL_VER; 667 668 nes_ucontext = kzalloc(sizeof *nes_ucontext, GFP_KERNEL); 669 if (!nes_ucontext) 670 return ERR_PTR(-ENOMEM); 671 672 nes_ucontext->nesdev = nesdev; 673 nes_ucontext->mmap_wq_offset = uresp.max_pds; 674 nes_ucontext->mmap_cq_offset = nes_ucontext->mmap_wq_offset + 675 ((sizeof(struct nes_hw_qp_wqe) * uresp.max_qps * 2) + PAGE_SIZE-1) / 676 PAGE_SIZE; 677 678 679 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { 680 kfree(nes_ucontext); 681 return ERR_PTR(-EFAULT); 682 } 683 684 INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list); 685 INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list); 686 atomic_set(&nes_ucontext->usecnt, 1); 687 return &nes_ucontext->ibucontext; 688} 689 690 691/** 692 * nes_dealloc_ucontext 693 */ 694static int nes_dealloc_ucontext(struct ib_ucontext *context) 695{ 696 /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */ 697 /* struct nes_device *nesdev = nesvnic->nesdev; */ 698 struct nes_ucontext *nes_ucontext = to_nesucontext(context); 699 700 if (!atomic_dec_and_test(&nes_ucontext->usecnt)) 701 return 0; 702 kfree(nes_ucontext); 703 return 0; 704} 705 706 707/** 708 * nes_mmap 709 */ 710static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 711{ 712 unsigned long index; 713 struct nes_vnic *nesvnic = to_nesvnic(context->device); 714 struct nes_device *nesdev = nesvnic->nesdev; 715 /* struct nes_adapter *nesadapter = nesdev->nesadapter; */ 716 struct nes_ucontext *nes_ucontext; 717 struct nes_qp *nesqp; 718 719 nes_ucontext = to_nesucontext(context); 720 721 722 if (vma->vm_pgoff >= nes_ucontext->mmap_wq_offset) { 723 index = (vma->vm_pgoff - nes_ucontext->mmap_wq_offset) * PAGE_SIZE; 724 index /= ((sizeof(struct nes_hw_qp_wqe) * nesdev->nesadapter->max_qp_wr * 2) + 725 PAGE_SIZE-1) & (~(PAGE_SIZE-1)); 726 if (!test_bit(index, nes_ucontext->allocated_wqs)) { 727 nes_debug(NES_DBG_MMAP, "wq %lu not allocated\n", index); 728 return -EFAULT; 729 } 730 nesqp = nes_ucontext->mmap_nesqp[index]; 731 if (nesqp == NULL) { 732 nes_debug(NES_DBG_MMAP, "wq %lu has a NULL QP base.\n", index); 733 return -EFAULT; 734 } 735 if (remap_pfn_range(vma, vma->vm_start, 736 virt_to_phys(nesqp->hwqp.sq_vbase) >> PAGE_SHIFT, 737 vma->vm_end - vma->vm_start, 738 vma->vm_page_prot)) { 739 nes_debug(NES_DBG_MMAP, "remap_pfn_range failed.\n"); 740 return -EAGAIN; 741 } 742 vma->vm_private_data = nesqp; 743 return 0; 744 } else { 745 index = vma->vm_pgoff; 746 if (!test_bit(index, nes_ucontext->allocated_doorbells)) 747 return -EFAULT; 748 749 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 750 if (io_remap_pfn_range(vma, vma->vm_start, 751 (nesdev->doorbell_start + 752 ((nes_ucontext->mmap_db_index[index] - nesdev->base_doorbell_index) * 4096)) 753 >> PAGE_SHIFT, PAGE_SIZE, vma->vm_page_prot)) 754 return -EAGAIN; 755 vma->vm_private_data = nes_ucontext; 756 return 0; 757 } 758 759 return -ENOSYS; 760} 761 762 763/** 764 * nes_alloc_pd 765 */ 766static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev, 767 struct ib_ucontext *context, struct ib_udata *udata) 768{ 769 struct nes_pd *nespd; 770 struct nes_vnic *nesvnic = to_nesvnic(ibdev); 771 struct nes_device *nesdev = nesvnic->nesdev; 772 struct nes_adapter *nesadapter = nesdev->nesadapter; 773 struct nes_ucontext *nesucontext; 774 struct nes_alloc_pd_resp uresp; 775 u32 pd_num = 0; 776 int err; 777 778 nes_debug(NES_DBG_PD, "nesvnic=%p, netdev=%p %s, ibdev=%p, context=%p, netdev refcnt=%u\n", 779 nesvnic, nesdev->netdev[0], nesdev->netdev[0]->name, ibdev, context, 780 netdev_refcnt_read(nesvnic->netdev)); 781 782 err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds, 783 nesadapter->max_pd, &pd_num, &nesadapter->next_pd); 784 if (err) { 785 return ERR_PTR(err); 786 } 787 788 nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL); 789 if (!nespd) { 790 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num); 791 return ERR_PTR(-ENOMEM); 792 } 793 794 nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n", 795 nespd, nesvnic->nesibdev->ibdev.name); 796 797 nespd->pd_id = (pd_num << (PAGE_SHIFT-12)) + nesadapter->base_pd; 798 799 if (context) { 800 nesucontext = to_nesucontext(context); 801 nespd->mmap_db_index = find_next_zero_bit(nesucontext->allocated_doorbells, 802 NES_MAX_USER_DB_REGIONS, nesucontext->first_free_db); 803 nes_debug(NES_DBG_PD, "find_first_zero_biton doorbells returned %u, mapping pd_id %u.\n", 804 nespd->mmap_db_index, nespd->pd_id); 805 if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) { 806 nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n"); 807 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num); 808 kfree(nespd); 809 return ERR_PTR(-ENOMEM); 810 } 811 812 uresp.pd_id = nespd->pd_id; 813 uresp.mmap_db_index = nespd->mmap_db_index; 814 if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) { 815 nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num); 816 kfree(nespd); 817 return ERR_PTR(-EFAULT); 818 } 819 820 set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells); 821 nesucontext->mmap_db_index[nespd->mmap_db_index] = nespd->pd_id; 822 nesucontext->first_free_db = nespd->mmap_db_index + 1; 823 } 824 825 nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd); 826 return &nespd->ibpd; 827} 828 829 830/** 831 * nes_dealloc_pd 832 */ 833static int nes_dealloc_pd(struct ib_pd *ibpd) 834{ 835 struct nes_ucontext *nesucontext; 836 struct nes_pd *nespd = to_nespd(ibpd); 837 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); 838 struct nes_device *nesdev = nesvnic->nesdev; 839 struct nes_adapter *nesadapter = nesdev->nesadapter; 840 841 if ((ibpd->uobject) && (ibpd->uobject->context)) { 842 nesucontext = to_nesucontext(ibpd->uobject->context); 843 nes_debug(NES_DBG_PD, "Clearing bit %u from allocated doorbells\n", 844 nespd->mmap_db_index); 845 clear_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells); 846 nesucontext->mmap_db_index[nespd->mmap_db_index] = 0; 847 if (nesucontext->first_free_db > nespd->mmap_db_index) { 848 nesucontext->first_free_db = nespd->mmap_db_index; 849 } 850 } 851 852 nes_debug(NES_DBG_PD, "Deallocating PD%u structure located @%p.\n", 853 nespd->pd_id, nespd); 854 nes_free_resource(nesadapter, nesadapter->allocated_pds, 855 (nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12)); 856 kfree(nespd); 857 858 return 0; 859} 860 861 862/** 863 * nes_create_ah 864 */ 865static struct ib_ah *nes_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) 866{ 867 return ERR_PTR(-ENOSYS); 868} 869 870 871/** 872 * nes_destroy_ah 873 */ 874static int nes_destroy_ah(struct ib_ah *ah) 875{ 876 return -ENOSYS; 877} 878 879 880/** 881 * nes_get_encoded_size 882 */ 883static inline u8 nes_get_encoded_size(int *size) 884{ 885 u8 encoded_size = 0; 886 if (*size <= 32) { 887 *size = 32; 888 encoded_size = 1; 889 } else if (*size <= 128) { 890 *size = 128; 891 encoded_size = 2; 892 } else if (*size <= 512) { 893 *size = 512; 894 encoded_size = 3; 895 } 896 return (encoded_size); 897} 898 899 900 901/** 902 * nes_setup_virt_qp 903 */ 904static int nes_setup_virt_qp(struct nes_qp *nesqp, struct nes_pbl *nespbl, 905 struct nes_vnic *nesvnic, int sq_size, int rq_size) 906{ 907 unsigned long flags; 908 void *mem; 909 __le64 *pbl = NULL; 910 __le64 *tpbl; 911 __le64 *pblbuffer; 912 struct nes_device *nesdev = nesvnic->nesdev; 913 struct nes_adapter *nesadapter = nesdev->nesadapter; 914 u32 pbl_entries; 915 u8 rq_pbl_entries; 916 u8 sq_pbl_entries; 917 918 pbl_entries = nespbl->pbl_size >> 3; 919 nes_debug(NES_DBG_QP, "Userspace PBL, pbl_size=%u, pbl_entries = %d pbl_vbase=%p, pbl_pbase=%lx\n", 920 nespbl->pbl_size, pbl_entries, 921 (void *)nespbl->pbl_vbase, 922 (unsigned long) nespbl->pbl_pbase); 923 pbl = (__le64 *) nespbl->pbl_vbase; /* points to first pbl entry */ 924 /* now lets set the sq_vbase as well as rq_vbase addrs we will assign */ 925 /* the first pbl to be fro the rq_vbase... */ 926 rq_pbl_entries = (rq_size * sizeof(struct nes_hw_qp_wqe)) >> 12; 927 sq_pbl_entries = (sq_size * sizeof(struct nes_hw_qp_wqe)) >> 12; 928 nesqp->hwqp.sq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32); 929 if (!nespbl->page) { 930 nes_debug(NES_DBG_QP, "QP nespbl->page is NULL \n"); 931 kfree(nespbl); 932 return -ENOMEM; 933 } 934 935 nesqp->hwqp.sq_vbase = kmap(nespbl->page); 936 nesqp->page = nespbl->page; 937 if (!nesqp->hwqp.sq_vbase) { 938 nes_debug(NES_DBG_QP, "QP sq_vbase kmap failed\n"); 939 kfree(nespbl); 940 return -ENOMEM; 941 } 942 943 /* Now to get to sq.. we need to calculate how many */ 944 /* PBL entries were used by the rq.. */ 945 pbl += sq_pbl_entries; 946 nesqp->hwqp.rq_pbase = (le32_to_cpu(((__le32 *)pbl)[0])) | ((u64)((le32_to_cpu(((__le32 *)pbl)[1]))) << 32); 947 /* nesqp->hwqp.rq_vbase = bus_to_virt(*pbl); */ 948 /*nesqp->hwqp.rq_vbase = phys_to_virt(*pbl); */ 949 950 nes_debug(NES_DBG_QP, "QP sq_vbase= %p sq_pbase=%lx rq_vbase=%p rq_pbase=%lx\n", 951 nesqp->hwqp.sq_vbase, (unsigned long) nesqp->hwqp.sq_pbase, 952 nesqp->hwqp.rq_vbase, (unsigned long) nesqp->hwqp.rq_pbase); 953 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 954 if (!nesadapter->free_256pbl) { 955 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, 956 nespbl->pbl_pbase); 957 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 958 kunmap(nesqp->page); 959 kfree(nespbl); 960 return -ENOMEM; 961 } 962 nesadapter->free_256pbl--; 963 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 964 965 nesqp->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 256, &nesqp->pbl_pbase); 966 pblbuffer = nesqp->pbl_vbase; 967 if (!nesqp->pbl_vbase) { 968 /* memory allocated during nes_reg_user_mr() */ 969 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, 970 nespbl->pbl_pbase); 971 kfree(nespbl); 972 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 973 nesadapter->free_256pbl++; 974 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 975 kunmap(nesqp->page); 976 return -ENOMEM; 977 } 978 memset(nesqp->pbl_vbase, 0, 256); 979 /* fill in the page address in the pbl buffer.. */ 980 tpbl = pblbuffer + 16; 981 pbl = (__le64 *)nespbl->pbl_vbase; 982 while (sq_pbl_entries--) 983 *tpbl++ = *pbl++; 984 tpbl = pblbuffer; 985 while (rq_pbl_entries--) 986 *tpbl++ = *pbl++; 987 988 /* done with memory allocated during nes_reg_user_mr() */ 989 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, 990 nespbl->pbl_pbase); 991 kfree(nespbl); 992 993 nesqp->qp_mem_size = 994 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 256; /* this is Q2 */ 995 /* Round up to a multiple of a page */ 996 nesqp->qp_mem_size += PAGE_SIZE - 1; 997 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1); 998 999 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size, 1000 &nesqp->hwqp.q2_pbase); 1001 1002 if (!mem) { 1003 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase); 1004 nesqp->pbl_vbase = NULL; 1005 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1006 nesadapter->free_256pbl++; 1007 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1008 kunmap(nesqp->page); 1009 return -ENOMEM; 1010 } 1011 nesqp->sq_kmapped = 1; 1012 nesqp->hwqp.q2_vbase = mem; 1013 mem += 256; 1014 memset(nesqp->hwqp.q2_vbase, 0, 256); 1015 nesqp->nesqp_context = mem; 1016 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context)); 1017 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256; 1018 1019 return 0; 1020} 1021 1022 1023/** 1024 * nes_setup_mmap_qp 1025 */ 1026static int nes_setup_mmap_qp(struct nes_qp *nesqp, struct nes_vnic *nesvnic, 1027 int sq_size, int rq_size) 1028{ 1029 void *mem; 1030 struct nes_device *nesdev = nesvnic->nesdev; 1031 1032 nesqp->qp_mem_size = (sizeof(struct nes_hw_qp_wqe) * sq_size) + 1033 (sizeof(struct nes_hw_qp_wqe) * rq_size) + 1034 max((u32)sizeof(struct nes_qp_context), ((u32)256)) + 1035 256; /* this is Q2 */ 1036 /* Round up to a multiple of a page */ 1037 nesqp->qp_mem_size += PAGE_SIZE - 1; 1038 nesqp->qp_mem_size &= ~(PAGE_SIZE - 1); 1039 1040 mem = pci_alloc_consistent(nesdev->pcidev, nesqp->qp_mem_size, 1041 &nesqp->hwqp.sq_pbase); 1042 if (!mem) 1043 return -ENOMEM; 1044 nes_debug(NES_DBG_QP, "PCI consistent memory for " 1045 "host descriptor rings located @ %p (pa = 0x%08lX.) size = %u.\n", 1046 mem, (unsigned long)nesqp->hwqp.sq_pbase, nesqp->qp_mem_size); 1047 1048 memset(mem, 0, nesqp->qp_mem_size); 1049 1050 nesqp->hwqp.sq_vbase = mem; 1051 mem += sizeof(struct nes_hw_qp_wqe) * sq_size; 1052 1053 nesqp->hwqp.rq_vbase = mem; 1054 nesqp->hwqp.rq_pbase = nesqp->hwqp.sq_pbase + 1055 sizeof(struct nes_hw_qp_wqe) * sq_size; 1056 mem += sizeof(struct nes_hw_qp_wqe) * rq_size; 1057 1058 nesqp->hwqp.q2_vbase = mem; 1059 nesqp->hwqp.q2_pbase = nesqp->hwqp.rq_pbase + 1060 sizeof(struct nes_hw_qp_wqe) * rq_size; 1061 mem += 256; 1062 memset(nesqp->hwqp.q2_vbase, 0, 256); 1063 1064 nesqp->nesqp_context = mem; 1065 nesqp->nesqp_context_pbase = nesqp->hwqp.q2_pbase + 256; 1066 memset(nesqp->nesqp_context, 0, sizeof(*nesqp->nesqp_context)); 1067 return 0; 1068} 1069 1070 1071/** 1072 * nes_free_qp_mem() is to free up the qp's pci_alloc_consistent() memory. 1073 */ 1074static inline void nes_free_qp_mem(struct nes_device *nesdev, 1075 struct nes_qp *nesqp, int virt_wqs) 1076{ 1077 unsigned long flags; 1078 struct nes_adapter *nesadapter = nesdev->nesadapter; 1079 if (!virt_wqs) { 1080 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, 1081 nesqp->hwqp.sq_vbase, nesqp->hwqp.sq_pbase); 1082 }else { 1083 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1084 nesadapter->free_256pbl++; 1085 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1086 pci_free_consistent(nesdev->pcidev, nesqp->qp_mem_size, nesqp->hwqp.q2_vbase, nesqp->hwqp.q2_pbase); 1087 pci_free_consistent(nesdev->pcidev, 256, nesqp->pbl_vbase, nesqp->pbl_pbase ); 1088 nesqp->pbl_vbase = NULL; 1089 if (nesqp->sq_kmapped) { 1090 nesqp->sq_kmapped = 0; 1091 kunmap(nesqp->page); 1092 } 1093 } 1094} 1095 1096 1097/** 1098 * nes_create_qp 1099 */ 1100static struct ib_qp *nes_create_qp(struct ib_pd *ibpd, 1101 struct ib_qp_init_attr *init_attr, struct ib_udata *udata) 1102{ 1103 u64 u64temp= 0; 1104 u64 u64nesqp = 0; 1105 struct nes_pd *nespd = to_nespd(ibpd); 1106 struct nes_vnic *nesvnic = to_nesvnic(ibpd->device); 1107 struct nes_device *nesdev = nesvnic->nesdev; 1108 struct nes_adapter *nesadapter = nesdev->nesadapter; 1109 struct nes_qp *nesqp; 1110 struct nes_cq *nescq; 1111 struct nes_ucontext *nes_ucontext; 1112 struct nes_hw_cqp_wqe *cqp_wqe; 1113 struct nes_cqp_request *cqp_request; 1114 struct nes_create_qp_req req; 1115 struct nes_create_qp_resp uresp; 1116 struct nes_pbl *nespbl = NULL; 1117 u32 qp_num = 0; 1118 u32 opcode = 0; 1119 /* u32 counter = 0; */ 1120 void *mem; 1121 unsigned long flags; 1122 int ret; 1123 int err; 1124 int virt_wqs = 0; 1125 int sq_size; 1126 int rq_size; 1127 u8 sq_encoded_size; 1128 u8 rq_encoded_size; 1129 /* int counter; */ 1130 1131 if (init_attr->create_flags) 1132 return ERR_PTR(-EINVAL); 1133 1134 atomic_inc(&qps_created); 1135 switch (init_attr->qp_type) { 1136 case IB_QPT_RC: 1137 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) { 1138 init_attr->cap.max_inline_data = 0; 1139 } else { 1140 init_attr->cap.max_inline_data = 64; 1141 } 1142 sq_size = init_attr->cap.max_send_wr; 1143 rq_size = init_attr->cap.max_recv_wr; 1144 1145 /* check if the encoded sizes are OK or not... */ 1146 sq_encoded_size = nes_get_encoded_size(&sq_size); 1147 rq_encoded_size = nes_get_encoded_size(&rq_size); 1148 1149 if ((!sq_encoded_size) || (!rq_encoded_size)) { 1150 nes_debug(NES_DBG_QP, "ERROR bad rq (%u) or sq (%u) size\n", 1151 rq_size, sq_size); 1152 return ERR_PTR(-EINVAL); 1153 } 1154 1155 init_attr->cap.max_send_wr = sq_size -2; 1156 init_attr->cap.max_recv_wr = rq_size -1; 1157 nes_debug(NES_DBG_QP, "RQ size=%u, SQ Size=%u\n", rq_size, sq_size); 1158 1159 ret = nes_alloc_resource(nesadapter, nesadapter->allocated_qps, 1160 nesadapter->max_qp, &qp_num, &nesadapter->next_qp); 1161 if (ret) { 1162 return ERR_PTR(ret); 1163 } 1164 1165 /* Need 512 (actually now 1024) byte alignment on this structure */ 1166 mem = kzalloc(sizeof(*nesqp)+NES_SW_CONTEXT_ALIGN-1, GFP_KERNEL); 1167 if (!mem) { 1168 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1169 nes_debug(NES_DBG_QP, "Unable to allocate QP\n"); 1170 return ERR_PTR(-ENOMEM); 1171 } 1172 u64nesqp = (unsigned long)mem; 1173 u64nesqp += ((u64)NES_SW_CONTEXT_ALIGN) - 1; 1174 u64temp = ((u64)NES_SW_CONTEXT_ALIGN) - 1; 1175 u64nesqp &= ~u64temp; 1176 nesqp = (struct nes_qp *)(unsigned long)u64nesqp; 1177 /* nes_debug(NES_DBG_QP, "nesqp=%p, allocated buffer=%p. Rounded to closest %u\n", 1178 nesqp, mem, NES_SW_CONTEXT_ALIGN); */ 1179 nesqp->allocated_buffer = mem; 1180 1181 if (udata) { 1182 if (ib_copy_from_udata(&req, udata, sizeof(struct nes_create_qp_req))) { 1183 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1184 kfree(nesqp->allocated_buffer); 1185 nes_debug(NES_DBG_QP, "ib_copy_from_udata() Failed \n"); 1186 return NULL; 1187 } 1188 if (req.user_wqe_buffers) { 1189 virt_wqs = 1; 1190 } 1191 if ((ibpd->uobject) && (ibpd->uobject->context)) { 1192 nesqp->user_mode = 1; 1193 nes_ucontext = to_nesucontext(ibpd->uobject->context); 1194 if (virt_wqs) { 1195 err = 1; 1196 list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) { 1197 if (nespbl->user_base == (unsigned long )req.user_wqe_buffers) { 1198 list_del(&nespbl->list); 1199 err = 0; 1200 nes_debug(NES_DBG_QP, "Found PBL for virtual QP. nespbl=%p. user_base=0x%lx\n", 1201 nespbl, nespbl->user_base); 1202 break; 1203 } 1204 } 1205 if (err) { 1206 nes_debug(NES_DBG_QP, "Didn't Find PBL for virtual QP. address = %llx.\n", 1207 (long long unsigned int)req.user_wqe_buffers); 1208 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1209 kfree(nesqp->allocated_buffer); 1210 return ERR_PTR(-EFAULT); 1211 } 1212 } 1213 1214 nes_ucontext = to_nesucontext(ibpd->uobject->context); 1215 nesqp->mmap_sq_db_index = 1216 find_next_zero_bit(nes_ucontext->allocated_wqs, 1217 NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq); 1218 /* nes_debug(NES_DBG_QP, "find_first_zero_biton wqs returned %u\n", 1219 nespd->mmap_db_index); */ 1220 if (nesqp->mmap_sq_db_index >= NES_MAX_USER_WQ_REGIONS) { 1221 nes_debug(NES_DBG_QP, 1222 "db index > max user regions, failing create QP\n"); 1223 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1224 if (virt_wqs) { 1225 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, 1226 nespbl->pbl_pbase); 1227 kfree(nespbl); 1228 } 1229 kfree(nesqp->allocated_buffer); 1230 return ERR_PTR(-ENOMEM); 1231 } 1232 set_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs); 1233 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = nesqp; 1234 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index + 1; 1235 } else { 1236 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1237 kfree(nesqp->allocated_buffer); 1238 return ERR_PTR(-EFAULT); 1239 } 1240 } 1241 err = (!virt_wqs) ? nes_setup_mmap_qp(nesqp, nesvnic, sq_size, rq_size) : 1242 nes_setup_virt_qp(nesqp, nespbl, nesvnic, sq_size, rq_size); 1243 if (err) { 1244 nes_debug(NES_DBG_QP, 1245 "error geting qp mem code = %d\n", err); 1246 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1247 kfree(nesqp->allocated_buffer); 1248 return ERR_PTR(-ENOMEM); 1249 } 1250 1251 nesqp->hwqp.sq_size = sq_size; 1252 nesqp->hwqp.sq_encoded_size = sq_encoded_size; 1253 nesqp->hwqp.sq_head = 1; 1254 nesqp->hwqp.rq_size = rq_size; 1255 nesqp->hwqp.rq_encoded_size = rq_encoded_size; 1256 /* nes_debug(NES_DBG_QP, "nesqp->nesqp_context_pbase = %p\n", 1257 (void *)nesqp->nesqp_context_pbase); 1258 */ 1259 nesqp->hwqp.qp_id = qp_num; 1260 nesqp->ibqp.qp_num = nesqp->hwqp.qp_id; 1261 nesqp->nespd = nespd; 1262 1263 nescq = to_nescq(init_attr->send_cq); 1264 nesqp->nesscq = nescq; 1265 nescq = to_nescq(init_attr->recv_cq); 1266 nesqp->nesrcq = nescq; 1267 1268 nesqp->nesqp_context->misc |= cpu_to_le32((u32)PCI_FUNC(nesdev->pcidev->devfn) << 1269 NES_QPCONTEXT_MISC_PCI_FCN_SHIFT); 1270 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.rq_encoded_size << 1271 NES_QPCONTEXT_MISC_RQ_SIZE_SHIFT); 1272 nesqp->nesqp_context->misc |= cpu_to_le32((u32)nesqp->hwqp.sq_encoded_size << 1273 NES_QPCONTEXT_MISC_SQ_SIZE_SHIFT); 1274 if (!udata) { 1275 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_PRIV_EN); 1276 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_FAST_REGISTER_EN); 1277 } 1278 nesqp->nesqp_context->cqs = cpu_to_le32(nesqp->nesscq->hw_cq.cq_number + 1279 ((u32)nesqp->nesrcq->hw_cq.cq_number << 16)); 1280 u64temp = (u64)nesqp->hwqp.sq_pbase; 1281 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp); 1282 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); 1283 1284 1285 if (!virt_wqs) { 1286 u64temp = (u64)nesqp->hwqp.sq_pbase; 1287 nesqp->nesqp_context->sq_addr_low = cpu_to_le32((u32)u64temp); 1288 nesqp->nesqp_context->sq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); 1289 u64temp = (u64)nesqp->hwqp.rq_pbase; 1290 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp); 1291 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); 1292 } else { 1293 u64temp = (u64)nesqp->pbl_pbase; 1294 nesqp->nesqp_context->rq_addr_low = cpu_to_le32((u32)u64temp); 1295 nesqp->nesqp_context->rq_addr_high = cpu_to_le32((u32)(u64temp >> 32)); 1296 } 1297 1298 /* nes_debug(NES_DBG_QP, "next_qp_nic_index=%u, using nic_index=%d\n", 1299 nesvnic->next_qp_nic_index, 1300 nesvnic->qp_nic_index[nesvnic->next_qp_nic_index]); */ 1301 spin_lock_irqsave(&nesdev->cqp.lock, flags); 1302 nesqp->nesqp_context->misc2 |= cpu_to_le32( 1303 (u32)nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] << 1304 NES_QPCONTEXT_MISC2_NIC_INDEX_SHIFT); 1305 nesvnic->next_qp_nic_index++; 1306 if ((nesvnic->next_qp_nic_index > 3) || 1307 (nesvnic->qp_nic_index[nesvnic->next_qp_nic_index] == 0xf)) { 1308 nesvnic->next_qp_nic_index = 0; 1309 } 1310 spin_unlock_irqrestore(&nesdev->cqp.lock, flags); 1311 1312 nesqp->nesqp_context->pd_index_wscale |= cpu_to_le32((u32)nesqp->nespd->pd_id << 16); 1313 u64temp = (u64)nesqp->hwqp.q2_pbase; 1314 nesqp->nesqp_context->q2_addr_low = cpu_to_le32((u32)u64temp); 1315 nesqp->nesqp_context->q2_addr_high = cpu_to_le32((u32)(u64temp >> 32)); 1316 nesqp->nesqp_context->aeq_token_low = cpu_to_le32((u32)((unsigned long)(nesqp))); 1317 nesqp->nesqp_context->aeq_token_high = cpu_to_le32((u32)(upper_32_bits((unsigned long)(nesqp)))); 1318 nesqp->nesqp_context->ird_ord_sizes = cpu_to_le32(NES_QPCONTEXT_ORDIRD_ALSMM | 1319 NES_QPCONTEXT_ORDIRD_AAH | 1320 ((((u32)nesadapter->max_irrq_wr) << 1321 NES_QPCONTEXT_ORDIRD_IRDSIZE_SHIFT) & NES_QPCONTEXT_ORDIRD_IRDSIZE_MASK)); 1322 if (disable_mpa_crc) { 1323 nes_debug(NES_DBG_QP, "Disabling MPA crc checking due to module option.\n"); 1324 nesqp->nesqp_context->ird_ord_sizes |= cpu_to_le32(NES_QPCONTEXT_ORDIRD_RNMC); 1325 } 1326 1327 1328 /* Create the QP */ 1329 cqp_request = nes_get_cqp_request(nesdev); 1330 if (cqp_request == NULL) { 1331 nes_debug(NES_DBG_QP, "Failed to get a cqp_request\n"); 1332 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1333 nes_free_qp_mem(nesdev, nesqp,virt_wqs); 1334 kfree(nesqp->allocated_buffer); 1335 return ERR_PTR(-ENOMEM); 1336 } 1337 cqp_request->waiting = 1; 1338 cqp_wqe = &cqp_request->cqp_wqe; 1339 1340 if (!virt_wqs) { 1341 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | 1342 NES_CQP_QP_IWARP_STATE_IDLE; 1343 } else { 1344 opcode = NES_CQP_CREATE_QP | NES_CQP_QP_TYPE_IWARP | NES_CQP_QP_VIRT_WQS | 1345 NES_CQP_QP_IWARP_STATE_IDLE; 1346 } 1347 opcode |= NES_CQP_QP_CQS_VALID; 1348 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 1349 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); 1350 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id); 1351 1352 u64temp = (u64)nesqp->nesqp_context_pbase; 1353 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp); 1354 1355 atomic_set(&cqp_request->refcount, 2); 1356 nes_post_cqp_request(nesdev, cqp_request); 1357 1358 /* Wait for CQP */ 1359 nes_debug(NES_DBG_QP, "Waiting for create iWARP QP%u to complete.\n", 1360 nesqp->hwqp.qp_id); 1361 ret = wait_event_timeout(cqp_request->waitq, 1362 (cqp_request->request_done != 0), NES_EVENT_TIMEOUT); 1363 nes_debug(NES_DBG_QP, "Create iwarp QP%u completed, wait_event_timeout ret=%u," 1364 " nesdev->cqp_head = %u, nesdev->cqp.sq_tail = %u," 1365 " CQP Major:Minor codes = 0x%04X:0x%04X.\n", 1366 nesqp->hwqp.qp_id, ret, nesdev->cqp.sq_head, nesdev->cqp.sq_tail, 1367 cqp_request->major_code, cqp_request->minor_code); 1368 if ((!ret) || (cqp_request->major_code)) { 1369 nes_put_cqp_request(nesdev, cqp_request); 1370 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1371 nes_free_qp_mem(nesdev, nesqp,virt_wqs); 1372 kfree(nesqp->allocated_buffer); 1373 if (!ret) { 1374 return ERR_PTR(-ETIME); 1375 } else { 1376 return ERR_PTR(-EIO); 1377 } 1378 } 1379 1380 nes_put_cqp_request(nesdev, cqp_request); 1381 1382 if (ibpd->uobject) { 1383 uresp.mmap_sq_db_index = nesqp->mmap_sq_db_index; 1384 uresp.actual_sq_size = sq_size; 1385 uresp.actual_rq_size = rq_size; 1386 uresp.qp_id = nesqp->hwqp.qp_id; 1387 uresp.nes_drv_opt = nes_drv_opt; 1388 if (ib_copy_to_udata(udata, &uresp, sizeof uresp)) { 1389 nes_free_resource(nesadapter, nesadapter->allocated_qps, qp_num); 1390 nes_free_qp_mem(nesdev, nesqp,virt_wqs); 1391 kfree(nesqp->allocated_buffer); 1392 return ERR_PTR(-EFAULT); 1393 } 1394 } 1395 1396 nes_debug(NES_DBG_QP, "QP%u structure located @%p.Size = %u.\n", 1397 nesqp->hwqp.qp_id, nesqp, (u32)sizeof(*nesqp)); 1398 spin_lock_init(&nesqp->lock); 1399 nes_add_ref(&nesqp->ibqp); 1400 break; 1401 default: 1402 nes_debug(NES_DBG_QP, "Invalid QP type: %d\n", init_attr->qp_type); 1403 return ERR_PTR(-EINVAL); 1404 } 1405 1406 nesqp->sig_all = (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR); 1407 1408 /* update the QP table */ 1409 nesdev->nesadapter->qp_table[nesqp->hwqp.qp_id-NES_FIRST_QPN] = nesqp; 1410 nes_debug(NES_DBG_QP, "netdev refcnt=%u\n", 1411 netdev_refcnt_read(nesvnic->netdev)); 1412 1413 return &nesqp->ibqp; 1414} 1415 1416 1417/** 1418 * nes_clean_cq 1419 */ 1420static void nes_clean_cq(struct nes_qp *nesqp, struct nes_cq *nescq) 1421{ 1422 u32 cq_head; 1423 u32 lo; 1424 u32 hi; 1425 u64 u64temp; 1426 unsigned long flags = 0; 1427 1428 spin_lock_irqsave(&nescq->lock, flags); 1429 1430 cq_head = nescq->hw_cq.cq_head; 1431 while (le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_VALID) { 1432 rmb(); 1433 lo = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]); 1434 hi = le32_to_cpu(nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX]); 1435 u64temp = (((u64)hi) << 32) | ((u64)lo); 1436 u64temp &= ~(NES_SW_CONTEXT_ALIGN-1); 1437 if (u64temp == (u64)(unsigned long)nesqp) { 1438 /* Zero the context value so cqe will be ignored */ 1439 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 0; 1440 nescq->hw_cq.cq_vbase[cq_head].cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX] = 0; 1441 } 1442 1443 if (++cq_head >= nescq->hw_cq.cq_size) 1444 cq_head = 0; 1445 } 1446 1447 spin_unlock_irqrestore(&nescq->lock, flags); 1448} 1449 1450 1451/** 1452 * nes_destroy_qp 1453 */ 1454static int nes_destroy_qp(struct ib_qp *ibqp) 1455{ 1456 struct nes_qp *nesqp = to_nesqp(ibqp); 1457 struct nes_ucontext *nes_ucontext; 1458 struct ib_qp_attr attr; 1459 struct iw_cm_id *cm_id; 1460 struct iw_cm_event cm_event; 1461 int ret; 1462 1463 atomic_inc(&sw_qps_destroyed); 1464 nesqp->destroyed = 1; 1465 1466 /* Blow away the connection if it exists. */ 1467 if (nesqp->ibqp_state >= IB_QPS_INIT && nesqp->ibqp_state <= IB_QPS_RTS) { 1468 /* if (nesqp->ibqp_state == IB_QPS_RTS) { */ 1469 attr.qp_state = IB_QPS_ERR; 1470 nes_modify_qp(&nesqp->ibqp, &attr, IB_QP_STATE, NULL); 1471 } 1472 1473 if (((nesqp->ibqp_state == IB_QPS_INIT) || 1474 (nesqp->ibqp_state == IB_QPS_RTR)) && (nesqp->cm_id)) { 1475 cm_id = nesqp->cm_id; 1476 cm_event.event = IW_CM_EVENT_CONNECT_REPLY; 1477 cm_event.status = -ETIMEDOUT; 1478 cm_event.local_addr = cm_id->local_addr; 1479 cm_event.remote_addr = cm_id->remote_addr; 1480 cm_event.private_data = NULL; 1481 cm_event.private_data_len = 0; 1482 1483 nes_debug(NES_DBG_QP, "Generating a CM Timeout Event for " 1484 "QP%u. cm_id = %p, refcount = %u. \n", 1485 nesqp->hwqp.qp_id, cm_id, atomic_read(&nesqp->refcount)); 1486 1487 cm_id->rem_ref(cm_id); 1488 ret = cm_id->event_handler(cm_id, &cm_event); 1489 if (ret) 1490 nes_debug(NES_DBG_QP, "OFA CM event_handler returned, ret=%d\n", ret); 1491 } 1492 1493 if (nesqp->user_mode) { 1494 if ((ibqp->uobject)&&(ibqp->uobject->context)) { 1495 nes_ucontext = to_nesucontext(ibqp->uobject->context); 1496 clear_bit(nesqp->mmap_sq_db_index, nes_ucontext->allocated_wqs); 1497 nes_ucontext->mmap_nesqp[nesqp->mmap_sq_db_index] = NULL; 1498 if (nes_ucontext->first_free_wq > nesqp->mmap_sq_db_index) { 1499 nes_ucontext->first_free_wq = nesqp->mmap_sq_db_index; 1500 } 1501 } 1502 if (nesqp->pbl_pbase && nesqp->sq_kmapped) { 1503 nesqp->sq_kmapped = 0; 1504 kunmap(nesqp->page); 1505 } 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 if (entries > nesadapter->max_cqe) 1547 return ERR_PTR(-EINVAL); 1548 1549 err = nes_alloc_resource(nesadapter, nesadapter->allocated_cqs, 1550 nesadapter->max_cq, &cq_num, &nesadapter->next_cq); 1551 if (err) { 1552 return ERR_PTR(err); 1553 } 1554 1555 nescq = kzalloc(sizeof(struct nes_cq), GFP_KERNEL); 1556 if (!nescq) { 1557 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1558 nes_debug(NES_DBG_CQ, "Unable to allocate nes_cq struct\n"); 1559 return ERR_PTR(-ENOMEM); 1560 } 1561 1562 nescq->hw_cq.cq_size = max(entries + 1, 5); 1563 nescq->hw_cq.cq_number = cq_num; 1564 nescq->ibcq.cqe = nescq->hw_cq.cq_size - 1; 1565 1566 1567 if (context) { 1568 nes_ucontext = to_nesucontext(context); 1569 if (ib_copy_from_udata(&req, udata, sizeof (struct nes_create_cq_req))) { 1570 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1571 kfree(nescq); 1572 return ERR_PTR(-EFAULT); 1573 } 1574 nesvnic->mcrq_ucontext = nes_ucontext; 1575 nes_ucontext->mcrqf = req.mcrqf; 1576 if (nes_ucontext->mcrqf) { 1577 if (nes_ucontext->mcrqf & 0x80000000) 1578 nescq->hw_cq.cq_number = nesvnic->nic.qp_id + 28 + 2 * ((nes_ucontext->mcrqf & 0xf) - 1); 1579 else if (nes_ucontext->mcrqf & 0x40000000) 1580 nescq->hw_cq.cq_number = nes_ucontext->mcrqf & 0xffff; 1581 else 1582 nescq->hw_cq.cq_number = nesvnic->mcrq_qp_id + nes_ucontext->mcrqf-1; 1583 nescq->mcrqf = nes_ucontext->mcrqf; 1584 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1585 } 1586 nes_debug(NES_DBG_CQ, "CQ Virtual Address = %08lX, size = %u.\n", 1587 (unsigned long)req.user_cq_buffer, entries); 1588 err = 1; 1589 list_for_each_entry(nespbl, &nes_ucontext->cq_reg_mem_list, list) { 1590 if (nespbl->user_base == (unsigned long )req.user_cq_buffer) { 1591 list_del(&nespbl->list); 1592 err = 0; 1593 nes_debug(NES_DBG_CQ, "Found PBL for virtual CQ. nespbl=%p.\n", 1594 nespbl); 1595 break; 1596 } 1597 } 1598 if (err) { 1599 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1600 kfree(nescq); 1601 return ERR_PTR(-EFAULT); 1602 } 1603 1604 pbl_entries = nespbl->pbl_size >> 3; 1605 nescq->cq_mem_size = 0; 1606 } else { 1607 nescq->cq_mem_size = nescq->hw_cq.cq_size * sizeof(struct nes_hw_cqe); 1608 nes_debug(NES_DBG_CQ, "Attempting to allocate pci memory (%u entries, %u bytes) for CQ%u.\n", 1609 entries, nescq->cq_mem_size, nescq->hw_cq.cq_number); 1610 1611 /* allocate the physical buffer space */ 1612 mem = pci_alloc_consistent(nesdev->pcidev, nescq->cq_mem_size, 1613 &nescq->hw_cq.cq_pbase); 1614 if (!mem) { 1615 printk(KERN_ERR PFX "Unable to allocate pci memory for cq\n"); 1616 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1617 kfree(nescq); 1618 return ERR_PTR(-ENOMEM); 1619 } 1620 1621 memset(mem, 0, nescq->cq_mem_size); 1622 nescq->hw_cq.cq_vbase = mem; 1623 nescq->hw_cq.cq_head = 0; 1624 nes_debug(NES_DBG_CQ, "CQ%u virtual address @ %p, phys = 0x%08X\n", 1625 nescq->hw_cq.cq_number, nescq->hw_cq.cq_vbase, 1626 (u32)nescq->hw_cq.cq_pbase); 1627 } 1628 1629 nescq->hw_cq.ce_handler = nes_iwarp_ce_handler; 1630 spin_lock_init(&nescq->lock); 1631 1632 /* send CreateCQ request to CQP */ 1633 cqp_request = nes_get_cqp_request(nesdev); 1634 if (cqp_request == NULL) { 1635 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n"); 1636 if (!context) 1637 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, 1638 nescq->hw_cq.cq_pbase); 1639 else { 1640 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, 1641 nespbl->pbl_vbase, nespbl->pbl_pbase); 1642 kfree(nespbl); 1643 } 1644 1645 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1646 kfree(nescq); 1647 return ERR_PTR(-ENOMEM); 1648 } 1649 cqp_request->waiting = 1; 1650 cqp_wqe = &cqp_request->cqp_wqe; 1651 1652 opcode = NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID | 1653 NES_CQP_CQ_CHK_OVERFLOW | 1654 NES_CQP_CQ_CEQE_MASK | ((u32)nescq->hw_cq.cq_size << 16); 1655 1656 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1657 1658 if (pbl_entries != 1) { 1659 if (pbl_entries > 32) { 1660 /* use 4k pbl */ 1661 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 4k PBL\n", pbl_entries); 1662 if (nesadapter->free_4kpbl == 0) { 1663 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1664 nes_free_cqp_request(nesdev, cqp_request); 1665 if (!context) 1666 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, 1667 nescq->hw_cq.cq_pbase); 1668 else { 1669 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, 1670 nespbl->pbl_vbase, nespbl->pbl_pbase); 1671 kfree(nespbl); 1672 } 1673 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1674 kfree(nescq); 1675 return ERR_PTR(-ENOMEM); 1676 } else { 1677 opcode |= (NES_CQP_CQ_VIRT | NES_CQP_CQ_4KB_CHUNK); 1678 nescq->virtual_cq = 2; 1679 nesadapter->free_4kpbl--; 1680 } 1681 } else { 1682 /* use 256 byte pbl */ 1683 nes_debug(NES_DBG_CQ, "pbl_entries=%u, use a 256 byte PBL\n", pbl_entries); 1684 if (nesadapter->free_256pbl == 0) { 1685 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1686 nes_free_cqp_request(nesdev, cqp_request); 1687 if (!context) 1688 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, 1689 nescq->hw_cq.cq_pbase); 1690 else { 1691 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, 1692 nespbl->pbl_vbase, nespbl->pbl_pbase); 1693 kfree(nespbl); 1694 } 1695 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1696 kfree(nescq); 1697 return ERR_PTR(-ENOMEM); 1698 } else { 1699 opcode |= NES_CQP_CQ_VIRT; 1700 nescq->virtual_cq = 1; 1701 nesadapter->free_256pbl--; 1702 } 1703 } 1704 } 1705 1706 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1707 1708 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 1709 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); 1710 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, 1711 (nescq->hw_cq.cq_number | ((u32)nesdev->ceq_index << 16))); 1712 1713 if (context) { 1714 if (pbl_entries != 1) 1715 u64temp = (u64)nespbl->pbl_pbase; 1716 else 1717 u64temp = le64_to_cpu(nespbl->pbl_vbase[0]); 1718 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX, 1719 nes_ucontext->mmap_db_index[0]); 1720 } else { 1721 u64temp = (u64)nescq->hw_cq.cq_pbase; 1722 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0; 1723 } 1724 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp); 1725 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0; 1726 u64temp = (u64)(unsigned long)&nescq->hw_cq; 1727 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] = 1728 cpu_to_le32((u32)(u64temp >> 1)); 1729 cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 1730 cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF); 1731 1732 atomic_set(&cqp_request->refcount, 2); 1733 nes_post_cqp_request(nesdev, cqp_request); 1734 1735 /* Wait for CQP */ 1736 nes_debug(NES_DBG_CQ, "Waiting for create iWARP CQ%u to complete.\n", 1737 nescq->hw_cq.cq_number); 1738 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), 1739 NES_EVENT_TIMEOUT * 2); 1740 nes_debug(NES_DBG_CQ, "Create iWARP CQ%u completed, wait_event_timeout ret = %d.\n", 1741 nescq->hw_cq.cq_number, ret); 1742 if ((!ret) || (cqp_request->major_code)) { 1743 nes_put_cqp_request(nesdev, cqp_request); 1744 if (!context) 1745 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, mem, 1746 nescq->hw_cq.cq_pbase); 1747 else { 1748 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, 1749 nespbl->pbl_vbase, nespbl->pbl_pbase); 1750 kfree(nespbl); 1751 } 1752 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1753 kfree(nescq); 1754 return ERR_PTR(-EIO); 1755 } 1756 nes_put_cqp_request(nesdev, cqp_request); 1757 1758 if (context) { 1759 /* free the nespbl */ 1760 pci_free_consistent(nesdev->pcidev, nespbl->pbl_size, nespbl->pbl_vbase, 1761 nespbl->pbl_pbase); 1762 kfree(nespbl); 1763 resp.cq_id = nescq->hw_cq.cq_number; 1764 resp.cq_size = nescq->hw_cq.cq_size; 1765 resp.mmap_db_index = 0; 1766 if (ib_copy_to_udata(udata, &resp, sizeof resp)) { 1767 nes_free_resource(nesadapter, nesadapter->allocated_cqs, cq_num); 1768 kfree(nescq); 1769 return ERR_PTR(-EFAULT); 1770 } 1771 } 1772 1773 return &nescq->ibcq; 1774} 1775 1776 1777/** 1778 * nes_destroy_cq 1779 */ 1780static int nes_destroy_cq(struct ib_cq *ib_cq) 1781{ 1782 struct nes_cq *nescq; 1783 struct nes_device *nesdev; 1784 struct nes_vnic *nesvnic; 1785 struct nes_adapter *nesadapter; 1786 struct nes_hw_cqp_wqe *cqp_wqe; 1787 struct nes_cqp_request *cqp_request; 1788 unsigned long flags; 1789 u32 opcode = 0; 1790 int ret; 1791 1792 if (ib_cq == NULL) 1793 return 0; 1794 1795 nescq = to_nescq(ib_cq); 1796 nesvnic = to_nesvnic(ib_cq->device); 1797 nesdev = nesvnic->nesdev; 1798 nesadapter = nesdev->nesadapter; 1799 1800 nes_debug(NES_DBG_CQ, "Destroy CQ%u\n", nescq->hw_cq.cq_number); 1801 1802 /* Send DestroyCQ request to CQP */ 1803 cqp_request = nes_get_cqp_request(nesdev); 1804 if (cqp_request == NULL) { 1805 nes_debug(NES_DBG_CQ, "Failed to get a cqp_request.\n"); 1806 return -ENOMEM; 1807 } 1808 cqp_request->waiting = 1; 1809 cqp_wqe = &cqp_request->cqp_wqe; 1810 opcode = NES_CQP_DESTROY_CQ | (nescq->hw_cq.cq_size << 16); 1811 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1812 if (nescq->virtual_cq == 1) { 1813 nesadapter->free_256pbl++; 1814 if (nesadapter->free_256pbl > nesadapter->max_256pbl) { 1815 printk(KERN_ERR PFX "%s: free 256B PBLs(%u) has exceeded the max(%u)\n", 1816 __func__, nesadapter->free_256pbl, nesadapter->max_256pbl); 1817 } 1818 } else if (nescq->virtual_cq == 2) { 1819 nesadapter->free_4kpbl++; 1820 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) { 1821 printk(KERN_ERR PFX "%s: free 4K PBLs(%u) has exceeded the max(%u)\n", 1822 __func__, nesadapter->free_4kpbl, nesadapter->max_4kpbl); 1823 } 1824 opcode |= NES_CQP_CQ_4KB_CHUNK; 1825 } 1826 1827 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1828 1829 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 1830 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); 1831 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, 1832 (nescq->hw_cq.cq_number | ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 16))); 1833 if (!nescq->mcrqf) 1834 nes_free_resource(nesadapter, nesadapter->allocated_cqs, nescq->hw_cq.cq_number); 1835 1836 atomic_set(&cqp_request->refcount, 2); 1837 nes_post_cqp_request(nesdev, cqp_request); 1838 1839 /* Wait for CQP */ 1840 nes_debug(NES_DBG_CQ, "Waiting for destroy iWARP CQ%u to complete.\n", 1841 nescq->hw_cq.cq_number); 1842 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), 1843 NES_EVENT_TIMEOUT); 1844 nes_debug(NES_DBG_CQ, "Destroy iWARP CQ%u completed, wait_event_timeout ret = %u," 1845 " CQP Major:Minor codes = 0x%04X:0x%04X.\n", 1846 nescq->hw_cq.cq_number, ret, cqp_request->major_code, 1847 cqp_request->minor_code); 1848 if (!ret) { 1849 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy timeout expired\n", 1850 nescq->hw_cq.cq_number); 1851 ret = -ETIME; 1852 } else if (cqp_request->major_code) { 1853 nes_debug(NES_DBG_CQ, "iWARP CQ%u destroy failed\n", 1854 nescq->hw_cq.cq_number); 1855 ret = -EIO; 1856 } else { 1857 ret = 0; 1858 } 1859 nes_put_cqp_request(nesdev, cqp_request); 1860 1861 if (nescq->cq_mem_size) 1862 pci_free_consistent(nesdev->pcidev, nescq->cq_mem_size, 1863 nescq->hw_cq.cq_vbase, nescq->hw_cq.cq_pbase); 1864 kfree(nescq); 1865 1866 return ret; 1867} 1868 1869/** 1870 * root_256 1871 */ 1872static u32 root_256(struct nes_device *nesdev, 1873 struct nes_root_vpbl *root_vpbl, 1874 struct nes_root_vpbl *new_root, 1875 u16 pbl_count_4k) 1876{ 1877 u64 leaf_pbl; 1878 int i, j, k; 1879 1880 if (pbl_count_4k == 1) { 1881 new_root->pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 1882 512, &new_root->pbl_pbase); 1883 1884 if (new_root->pbl_vbase == NULL) 1885 return 0; 1886 1887 leaf_pbl = (u64)root_vpbl->pbl_pbase; 1888 for (i = 0; i < 16; i++) { 1889 new_root->pbl_vbase[i].pa_low = 1890 cpu_to_le32((u32)leaf_pbl); 1891 new_root->pbl_vbase[i].pa_high = 1892 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32))); 1893 leaf_pbl += 256; 1894 } 1895 } else { 1896 for (i = 3; i >= 0; i--) { 1897 j = i * 16; 1898 root_vpbl->pbl_vbase[j] = root_vpbl->pbl_vbase[i]; 1899 leaf_pbl = le32_to_cpu(root_vpbl->pbl_vbase[j].pa_low) + 1900 (((u64)le32_to_cpu(root_vpbl->pbl_vbase[j].pa_high)) 1901 << 32); 1902 for (k = 1; k < 16; k++) { 1903 leaf_pbl += 256; 1904 root_vpbl->pbl_vbase[j + k].pa_low = 1905 cpu_to_le32((u32)leaf_pbl); 1906 root_vpbl->pbl_vbase[j + k].pa_high = 1907 cpu_to_le32((u32)((((u64)leaf_pbl) >> 32))); 1908 } 1909 } 1910 } 1911 1912 return 1; 1913} 1914 1915 1916/** 1917 * nes_reg_mr 1918 */ 1919static int nes_reg_mr(struct nes_device *nesdev, struct nes_pd *nespd, 1920 u32 stag, u64 region_length, struct nes_root_vpbl *root_vpbl, 1921 dma_addr_t single_buffer, u16 pbl_count_4k, 1922 u16 residual_page_count_4k, int acc, u64 *iova_start, 1923 u16 *actual_pbl_cnt, u8 *used_4k_pbls) 1924{ 1925 struct nes_hw_cqp_wqe *cqp_wqe; 1926 struct nes_cqp_request *cqp_request; 1927 unsigned long flags; 1928 int ret; 1929 struct nes_adapter *nesadapter = nesdev->nesadapter; 1930 uint pg_cnt = 0; 1931 u16 pbl_count_256 = 0; 1932 u16 pbl_count = 0; 1933 u8 use_256_pbls = 0; 1934 u8 use_4k_pbls = 0; 1935 u16 use_two_level = (pbl_count_4k > 1) ? 1 : 0; 1936 struct nes_root_vpbl new_root = { 0, NULL, NULL }; 1937 u32 opcode = 0; 1938 u16 major_code; 1939 1940 /* Register the region with the adapter */ 1941 cqp_request = nes_get_cqp_request(nesdev); 1942 if (cqp_request == NULL) { 1943 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); 1944 return -ENOMEM; 1945 } 1946 cqp_request->waiting = 1; 1947 cqp_wqe = &cqp_request->cqp_wqe; 1948 1949 if (pbl_count_4k) { 1950 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1951 1952 pg_cnt = ((pbl_count_4k - 1) * 512) + residual_page_count_4k; 1953 pbl_count_256 = (pg_cnt + 31) / 32; 1954 if (pg_cnt <= 32) { 1955 if (pbl_count_256 <= nesadapter->free_256pbl) 1956 use_256_pbls = 1; 1957 else if (pbl_count_4k <= nesadapter->free_4kpbl) 1958 use_4k_pbls = 1; 1959 } else if (pg_cnt <= 2048) { 1960 if (((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) && 1961 (nesadapter->free_4kpbl > (nesadapter->max_4kpbl >> 1))) { 1962 use_4k_pbls = 1; 1963 } else if ((pbl_count_256 + 1) <= nesadapter->free_256pbl) { 1964 use_256_pbls = 1; 1965 use_two_level = 1; 1966 } else if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) { 1967 use_4k_pbls = 1; 1968 } 1969 } else { 1970 if ((pbl_count_4k + 1) <= nesadapter->free_4kpbl) 1971 use_4k_pbls = 1; 1972 } 1973 1974 if (use_256_pbls) { 1975 pbl_count = pbl_count_256; 1976 nesadapter->free_256pbl -= pbl_count + use_two_level; 1977 } else if (use_4k_pbls) { 1978 pbl_count = pbl_count_4k; 1979 nesadapter->free_4kpbl -= pbl_count + use_two_level; 1980 } else { 1981 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1982 nes_debug(NES_DBG_MR, "Out of Pbls\n"); 1983 nes_free_cqp_request(nesdev, cqp_request); 1984 return -ENOMEM; 1985 } 1986 1987 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 1988 } 1989 1990 if (use_256_pbls && use_two_level) { 1991 if (root_256(nesdev, root_vpbl, &new_root, pbl_count_4k) == 1) { 1992 if (new_root.pbl_pbase != 0) 1993 root_vpbl = &new_root; 1994 } else { 1995 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 1996 nesadapter->free_256pbl += pbl_count_256 + use_two_level; 1997 use_256_pbls = 0; 1998 1999 if (pbl_count_4k == 1) 2000 use_two_level = 0; 2001 pbl_count = pbl_count_4k; 2002 2003 if ((pbl_count_4k + use_two_level) <= nesadapter->free_4kpbl) { 2004 nesadapter->free_4kpbl -= pbl_count + use_two_level; 2005 use_4k_pbls = 1; 2006 } 2007 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 2008 2009 if (use_4k_pbls == 0) 2010 return -ENOMEM; 2011 } 2012 } 2013 2014 opcode = NES_CQP_REGISTER_STAG | NES_CQP_STAG_RIGHTS_LOCAL_READ | 2015 NES_CQP_STAG_VA_TO | NES_CQP_STAG_MR; 2016 if (acc & IB_ACCESS_LOCAL_WRITE) 2017 opcode |= NES_CQP_STAG_RIGHTS_LOCAL_WRITE; 2018 if (acc & IB_ACCESS_REMOTE_WRITE) 2019 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_WRITE | NES_CQP_STAG_REM_ACC_EN; 2020 if (acc & IB_ACCESS_REMOTE_READ) 2021 opcode |= NES_CQP_STAG_RIGHTS_REMOTE_READ | NES_CQP_STAG_REM_ACC_EN; 2022 if (acc & IB_ACCESS_MW_BIND) 2023 opcode |= NES_CQP_STAG_RIGHTS_WINDOW_BIND | NES_CQP_STAG_REM_ACC_EN; 2024 2025 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 2026 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, opcode); 2027 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_VA_LOW_IDX, *iova_start); 2028 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_LEN_LOW_IDX, region_length); 2029 2030 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] = 2031 cpu_to_le32((u32)(region_length >> 8) & 0xff000000); 2032 cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_HIGH_PD_IDX] |= 2033 cpu_to_le32(nespd->pd_id & 0x00007fff); 2034 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, stag); 2035 2036 if (pbl_count == 0) { 2037 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, single_buffer); 2038 } else { 2039 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PA_LOW_IDX, root_vpbl->pbl_pbase); 2040 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX, pbl_count); 2041 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_PBL_LEN_IDX, (pg_cnt * 8)); 2042 2043 if (use_4k_pbls) 2044 cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] |= cpu_to_le32(NES_CQP_STAG_PBL_BLK_SIZE); 2045 } 2046 barrier(); 2047 2048 atomic_set(&cqp_request->refcount, 2); 2049 nes_post_cqp_request(nesdev, cqp_request); 2050 2051 /* Wait for CQP */ 2052 ret = wait_event_timeout(cqp_request->waitq, (0 != cqp_request->request_done), 2053 NES_EVENT_TIMEOUT); 2054 nes_debug(NES_DBG_MR, "Register STag 0x%08X completed, wait_event_timeout ret = %u," 2055 " CQP Major:Minor codes = 0x%04X:0x%04X.\n", 2056 stag, ret, cqp_request->major_code, cqp_request->minor_code); 2057 major_code = cqp_request->major_code; 2058 nes_put_cqp_request(nesdev, cqp_request); 2059 2060 if ((!ret || major_code) && pbl_count != 0) { 2061 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 2062 if (use_256_pbls) 2063 nesadapter->free_256pbl += pbl_count + use_two_level; 2064 else if (use_4k_pbls) 2065 nesadapter->free_4kpbl += pbl_count + use_two_level; 2066 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 2067 } 2068 if (new_root.pbl_pbase) 2069 pci_free_consistent(nesdev->pcidev, 512, new_root.pbl_vbase, 2070 new_root.pbl_pbase); 2071 2072 if (!ret) 2073 return -ETIME; 2074 else if (major_code) 2075 return -EIO; 2076 2077 *actual_pbl_cnt = pbl_count + use_two_level; 2078 *used_4k_pbls = use_4k_pbls; 2079 return 0; 2080} 2081 2082 2083/** 2084 * nes_reg_phys_mr 2085 */ 2086static struct ib_mr *nes_reg_phys_mr(struct ib_pd *ib_pd, 2087 struct ib_phys_buf *buffer_list, int num_phys_buf, int acc, 2088 u64 * iova_start) 2089{ 2090 u64 region_length; 2091 struct nes_pd *nespd = to_nespd(ib_pd); 2092 struct nes_vnic *nesvnic = to_nesvnic(ib_pd->device); 2093 struct nes_device *nesdev = nesvnic->nesdev; 2094 struct nes_adapter *nesadapter = nesdev->nesadapter; 2095 struct nes_mr *nesmr; 2096 struct ib_mr *ibmr; 2097 struct nes_vpbl vpbl; 2098 struct nes_root_vpbl root_vpbl; 2099 u32 stag; 2100 u32 i; 2101 unsigned long mask; 2102 u32 stag_index = 0; 2103 u32 next_stag_index = 0; 2104 u32 driver_key = 0; 2105 u32 root_pbl_index = 0; 2106 u32 cur_pbl_index = 0; 2107 int err = 0; 2108 int ret = 0; 2109 u16 pbl_count = 0; 2110 u8 single_page = 1; 2111 u8 stag_key = 0; 2112 2113 region_length = 0; 2114 vpbl.pbl_vbase = NULL; 2115 root_vpbl.pbl_vbase = NULL; 2116 root_vpbl.pbl_pbase = 0; 2117 2118 get_random_bytes(&next_stag_index, sizeof(next_stag_index)); 2119 stag_key = (u8)next_stag_index; 2120 2121 driver_key = 0; 2122 2123 next_stag_index >>= 8; 2124 next_stag_index %= nesadapter->max_mr; 2125 if (num_phys_buf > (1024*512)) { 2126 return ERR_PTR(-E2BIG); 2127 } 2128 2129 if ((buffer_list[0].addr ^ *iova_start) & ~PAGE_MASK) 2130 return ERR_PTR(-EINVAL); 2131 2132 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, nesadapter->max_mr, 2133 &stag_index, &next_stag_index); 2134 if (err) { 2135 return ERR_PTR(err); 2136 } 2137 2138 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); 2139 if (!nesmr) { 2140 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2141 return ERR_PTR(-ENOMEM); 2142 } 2143 2144 for (i = 0; i < num_phys_buf; i++) { 2145 2146 if ((i & 0x01FF) == 0) { 2147 if (root_pbl_index == 1) { 2148 /* Allocate the root PBL */ 2149 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 8192, 2150 &root_vpbl.pbl_pbase); 2151 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n", 2152 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase); 2153 if (!root_vpbl.pbl_vbase) { 2154 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, 2155 vpbl.pbl_pbase); 2156 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2157 kfree(nesmr); 2158 return ERR_PTR(-ENOMEM); 2159 } 2160 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, GFP_KERNEL); 2161 if (!root_vpbl.leaf_vpbl) { 2162 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, 2163 root_vpbl.pbl_pbase); 2164 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, 2165 vpbl.pbl_pbase); 2166 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2167 kfree(nesmr); 2168 return ERR_PTR(-ENOMEM); 2169 } 2170 root_vpbl.pbl_vbase[0].pa_low = cpu_to_le32((u32)vpbl.pbl_pbase); 2171 root_vpbl.pbl_vbase[0].pa_high = 2172 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32))); 2173 root_vpbl.leaf_vpbl[0] = vpbl; 2174 } 2175 /* Allocate a 4K buffer for the PBL */ 2176 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096, 2177 &vpbl.pbl_pbase); 2178 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%016lX\n", 2179 vpbl.pbl_vbase, (unsigned long)vpbl.pbl_pbase); 2180 if (!vpbl.pbl_vbase) { 2181 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2182 ibmr = ERR_PTR(-ENOMEM); 2183 kfree(nesmr); 2184 goto reg_phys_err; 2185 } 2186 /* Fill in the root table */ 2187 if (1 <= root_pbl_index) { 2188 root_vpbl.pbl_vbase[root_pbl_index].pa_low = 2189 cpu_to_le32((u32)vpbl.pbl_pbase); 2190 root_vpbl.pbl_vbase[root_pbl_index].pa_high = 2191 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32))); 2192 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl; 2193 } 2194 root_pbl_index++; 2195 cur_pbl_index = 0; 2196 } 2197 2198 mask = !buffer_list[i].size; 2199 if (i != 0) 2200 mask |= buffer_list[i].addr; 2201 if (i != num_phys_buf - 1) 2202 mask |= buffer_list[i].addr + buffer_list[i].size; 2203 2204 if (mask & ~PAGE_MASK) { 2205 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2206 nes_debug(NES_DBG_MR, "Invalid buffer addr or size\n"); 2207 ibmr = ERR_PTR(-EINVAL); 2208 kfree(nesmr); 2209 goto reg_phys_err; 2210 } 2211 2212 region_length += buffer_list[i].size; 2213 if ((i != 0) && (single_page)) { 2214 if ((buffer_list[i-1].addr+PAGE_SIZE) != buffer_list[i].addr) 2215 single_page = 0; 2216 } 2217 vpbl.pbl_vbase[cur_pbl_index].pa_low = cpu_to_le32((u32)buffer_list[i].addr & PAGE_MASK); 2218 vpbl.pbl_vbase[cur_pbl_index++].pa_high = 2219 cpu_to_le32((u32)((((u64)buffer_list[i].addr) >> 32))); 2220 } 2221 2222 stag = stag_index << 8; 2223 stag |= driver_key; 2224 stag += (u32)stag_key; 2225 2226 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%016lX," 2227 " length = 0x%016lX, index = 0x%08X\n", 2228 stag, (unsigned long)*iova_start, (unsigned long)region_length, stag_index); 2229 2230 /* Make the leaf PBL the root if only one PBL */ 2231 if (root_pbl_index == 1) { 2232 root_vpbl.pbl_pbase = vpbl.pbl_pbase; 2233 } 2234 2235 if (single_page) { 2236 pbl_count = 0; 2237 } else { 2238 pbl_count = root_pbl_index; 2239 } 2240 ret = nes_reg_mr(nesdev, nespd, stag, region_length, &root_vpbl, 2241 buffer_list[0].addr, pbl_count, (u16)cur_pbl_index, acc, iova_start, 2242 &nesmr->pbls_used, &nesmr->pbl_4k); 2243 2244 if (ret == 0) { 2245 nesmr->ibmr.rkey = stag; 2246 nesmr->ibmr.lkey = stag; 2247 nesmr->mode = IWNES_MEMREG_TYPE_MEM; 2248 ibmr = &nesmr->ibmr; 2249 } else { 2250 kfree(nesmr); 2251 ibmr = ERR_PTR(-ENOMEM); 2252 } 2253 2254 reg_phys_err: 2255 /* free the resources */ 2256 if (root_pbl_index == 1) { 2257 /* single PBL case */ 2258 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, vpbl.pbl_pbase); 2259 } else { 2260 for (i=0; i<root_pbl_index; i++) { 2261 pci_free_consistent(nesdev->pcidev, 4096, root_vpbl.leaf_vpbl[i].pbl_vbase, 2262 root_vpbl.leaf_vpbl[i].pbl_pbase); 2263 } 2264 kfree(root_vpbl.leaf_vpbl); 2265 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, 2266 root_vpbl.pbl_pbase); 2267 } 2268 2269 return ibmr; 2270} 2271 2272 2273/** 2274 * nes_get_dma_mr 2275 */ 2276static struct ib_mr *nes_get_dma_mr(struct ib_pd *pd, int acc) 2277{ 2278 struct ib_phys_buf bl; 2279 u64 kva = 0; 2280 2281 nes_debug(NES_DBG_MR, "\n"); 2282 2283 bl.size = (u64)0xffffffffffULL; 2284 bl.addr = 0; 2285 return nes_reg_phys_mr(pd, &bl, 1, acc, &kva); 2286} 2287 2288 2289/** 2290 * nes_reg_user_mr 2291 */ 2292static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 2293 u64 virt, int acc, struct ib_udata *udata) 2294{ 2295 u64 iova_start; 2296 __le64 *pbl; 2297 u64 region_length; 2298 dma_addr_t last_dma_addr = 0; 2299 dma_addr_t first_dma_addr = 0; 2300 struct nes_pd *nespd = to_nespd(pd); 2301 struct nes_vnic *nesvnic = to_nesvnic(pd->device); 2302 struct nes_device *nesdev = nesvnic->nesdev; 2303 struct nes_adapter *nesadapter = nesdev->nesadapter; 2304 struct ib_mr *ibmr = ERR_PTR(-EINVAL); 2305 struct ib_umem_chunk *chunk; 2306 struct nes_ucontext *nes_ucontext; 2307 struct nes_pbl *nespbl; 2308 struct nes_mr *nesmr; 2309 struct ib_umem *region; 2310 struct nes_mem_reg_req req; 2311 struct nes_vpbl vpbl; 2312 struct nes_root_vpbl root_vpbl; 2313 int nmap_index, page_index; 2314 int page_count = 0; 2315 int err, pbl_depth = 0; 2316 int chunk_pages; 2317 int ret; 2318 u32 stag; 2319 u32 stag_index = 0; 2320 u32 next_stag_index; 2321 u32 driver_key; 2322 u32 root_pbl_index = 0; 2323 u32 cur_pbl_index = 0; 2324 u32 skip_pages; 2325 u16 pbl_count; 2326 u8 single_page = 1; 2327 u8 stag_key; 2328 2329 region = ib_umem_get(pd->uobject->context, start, length, acc, 0); 2330 if (IS_ERR(region)) { 2331 return (struct ib_mr *)region; 2332 } 2333 2334 nes_debug(NES_DBG_MR, "User base = 0x%lX, Virt base = 0x%lX, length = %u," 2335 " offset = %u, page size = %u.\n", 2336 (unsigned long int)start, (unsigned long int)virt, (u32)length, 2337 region->offset, region->page_size); 2338 2339 skip_pages = ((u32)region->offset) >> 12; 2340 2341 if (ib_copy_from_udata(&req, udata, sizeof(req))) 2342 return ERR_PTR(-EFAULT); 2343 nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type); 2344 2345 switch (req.reg_type) { 2346 case IWNES_MEMREG_TYPE_MEM: 2347 pbl_depth = 0; 2348 region_length = 0; 2349 vpbl.pbl_vbase = NULL; 2350 root_vpbl.pbl_vbase = NULL; 2351 root_vpbl.pbl_pbase = 0; 2352 2353 get_random_bytes(&next_stag_index, sizeof(next_stag_index)); 2354 stag_key = (u8)next_stag_index; 2355 2356 driver_key = next_stag_index & 0x70000000; 2357 2358 next_stag_index >>= 8; 2359 next_stag_index %= nesadapter->max_mr; 2360 2361 err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs, 2362 nesadapter->max_mr, &stag_index, &next_stag_index); 2363 if (err) { 2364 ib_umem_release(region); 2365 return ERR_PTR(err); 2366 } 2367 2368 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); 2369 if (!nesmr) { 2370 ib_umem_release(region); 2371 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2372 return ERR_PTR(-ENOMEM); 2373 } 2374 nesmr->region = region; 2375 2376 list_for_each_entry(chunk, ®ion->chunk_list, list) { 2377 nes_debug(NES_DBG_MR, "Chunk: nents = %u, nmap = %u .\n", 2378 chunk->nents, chunk->nmap); 2379 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) { 2380 if (sg_dma_address(&chunk->page_list[nmap_index]) & ~PAGE_MASK) { 2381 ib_umem_release(region); 2382 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2383 nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n", 2384 (unsigned int) sg_dma_address(&chunk->page_list[nmap_index])); 2385 ibmr = ERR_PTR(-EINVAL); 2386 kfree(nesmr); 2387 goto reg_user_mr_err; 2388 } 2389 2390 if (!sg_dma_len(&chunk->page_list[nmap_index])) { 2391 ib_umem_release(region); 2392 nes_free_resource(nesadapter, nesadapter->allocated_mrs, 2393 stag_index); 2394 nes_debug(NES_DBG_MR, "Invalid Buffer Size\n"); 2395 ibmr = ERR_PTR(-EINVAL); 2396 kfree(nesmr); 2397 goto reg_user_mr_err; 2398 } 2399 2400 region_length += sg_dma_len(&chunk->page_list[nmap_index]); 2401 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12; 2402 region_length -= skip_pages << 12; 2403 for (page_index=skip_pages; page_index < chunk_pages; page_index++) { 2404 skip_pages = 0; 2405 if ((page_count!=0)&&(page_count<<12)-(region->offset&(4096-1))>=region->length) 2406 goto enough_pages; 2407 if ((page_count&0x01FF) == 0) { 2408 if (page_count >= 1024 * 512) { 2409 ib_umem_release(region); 2410 nes_free_resource(nesadapter, 2411 nesadapter->allocated_mrs, stag_index); 2412 kfree(nesmr); 2413 ibmr = ERR_PTR(-E2BIG); 2414 goto reg_user_mr_err; 2415 } 2416 if (root_pbl_index == 1) { 2417 root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 2418 8192, &root_vpbl.pbl_pbase); 2419 nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n", 2420 root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase); 2421 if (!root_vpbl.pbl_vbase) { 2422 ib_umem_release(region); 2423 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, 2424 vpbl.pbl_pbase); 2425 nes_free_resource(nesadapter, nesadapter->allocated_mrs, 2426 stag_index); 2427 kfree(nesmr); 2428 ibmr = ERR_PTR(-ENOMEM); 2429 goto reg_user_mr_err; 2430 } 2431 root_vpbl.leaf_vpbl = kzalloc(sizeof(*root_vpbl.leaf_vpbl)*1024, 2432 GFP_KERNEL); 2433 if (!root_vpbl.leaf_vpbl) { 2434 ib_umem_release(region); 2435 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, 2436 root_vpbl.pbl_pbase); 2437 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, 2438 vpbl.pbl_pbase); 2439 nes_free_resource(nesadapter, nesadapter->allocated_mrs, 2440 stag_index); 2441 kfree(nesmr); 2442 ibmr = ERR_PTR(-ENOMEM); 2443 goto reg_user_mr_err; 2444 } 2445 root_vpbl.pbl_vbase[0].pa_low = 2446 cpu_to_le32((u32)vpbl.pbl_pbase); 2447 root_vpbl.pbl_vbase[0].pa_high = 2448 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32))); 2449 root_vpbl.leaf_vpbl[0] = vpbl; 2450 } 2451 vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096, 2452 &vpbl.pbl_pbase); 2453 nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n", 2454 vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase); 2455 if (!vpbl.pbl_vbase) { 2456 ib_umem_release(region); 2457 nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index); 2458 ibmr = ERR_PTR(-ENOMEM); 2459 kfree(nesmr); 2460 goto reg_user_mr_err; 2461 } 2462 if (1 <= root_pbl_index) { 2463 root_vpbl.pbl_vbase[root_pbl_index].pa_low = 2464 cpu_to_le32((u32)vpbl.pbl_pbase); 2465 root_vpbl.pbl_vbase[root_pbl_index].pa_high = 2466 cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32))); 2467 root_vpbl.leaf_vpbl[root_pbl_index] = vpbl; 2468 } 2469 root_pbl_index++; 2470 cur_pbl_index = 0; 2471 } 2472 if (single_page) { 2473 if (page_count != 0) { 2474 if ((last_dma_addr+4096) != 2475 (sg_dma_address(&chunk->page_list[nmap_index])+ 2476 (page_index*4096))) 2477 single_page = 0; 2478 last_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+ 2479 (page_index*4096); 2480 } else { 2481 first_dma_addr = sg_dma_address(&chunk->page_list[nmap_index])+ 2482 (page_index*4096); 2483 last_dma_addr = first_dma_addr; 2484 } 2485 } 2486 2487 vpbl.pbl_vbase[cur_pbl_index].pa_low = 2488 cpu_to_le32((u32)(sg_dma_address(&chunk->page_list[nmap_index])+ 2489 (page_index*4096))); 2490 vpbl.pbl_vbase[cur_pbl_index].pa_high = 2491 cpu_to_le32((u32)((((u64)(sg_dma_address(&chunk->page_list[nmap_index])+ 2492 (page_index*4096))) >> 32))); 2493 cur_pbl_index++; 2494 page_count++; 2495 } 2496 } 2497 } 2498 enough_pages: 2499 nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x," 2500 " stag_key=0x%08x\n", 2501 stag_index, driver_key, stag_key); 2502 stag = stag_index << 8; 2503 stag |= driver_key; 2504 stag += (u32)stag_key; 2505 2506 iova_start = virt; 2507 /* Make the leaf PBL the root if only one PBL */ 2508 if (root_pbl_index == 1) { 2509 root_vpbl.pbl_pbase = vpbl.pbl_pbase; 2510 } 2511 2512 if (single_page) { 2513 pbl_count = 0; 2514 } else { 2515 pbl_count = root_pbl_index; 2516 first_dma_addr = 0; 2517 } 2518 nes_debug(NES_DBG_MR, "Registering STag 0x%08X, VA = 0x%08X, length = 0x%08X," 2519 " index = 0x%08X, region->length=0x%08llx, pbl_count = %u\n", 2520 stag, (unsigned int)iova_start, 2521 (unsigned int)region_length, stag_index, 2522 (unsigned long long)region->length, pbl_count); 2523 ret = nes_reg_mr(nesdev, nespd, stag, region->length, &root_vpbl, 2524 first_dma_addr, pbl_count, (u16)cur_pbl_index, acc, 2525 &iova_start, &nesmr->pbls_used, &nesmr->pbl_4k); 2526 2527 nes_debug(NES_DBG_MR, "ret=%d\n", ret); 2528 2529 if (ret == 0) { 2530 nesmr->ibmr.rkey = stag; 2531 nesmr->ibmr.lkey = stag; 2532 nesmr->mode = IWNES_MEMREG_TYPE_MEM; 2533 ibmr = &nesmr->ibmr; 2534 } else { 2535 ib_umem_release(region); 2536 kfree(nesmr); 2537 ibmr = ERR_PTR(-ENOMEM); 2538 } 2539 2540 reg_user_mr_err: 2541 /* free the resources */ 2542 if (root_pbl_index == 1) { 2543 pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase, 2544 vpbl.pbl_pbase); 2545 } else { 2546 for (page_index=0; page_index<root_pbl_index; page_index++) { 2547 pci_free_consistent(nesdev->pcidev, 4096, 2548 root_vpbl.leaf_vpbl[page_index].pbl_vbase, 2549 root_vpbl.leaf_vpbl[page_index].pbl_pbase); 2550 } 2551 kfree(root_vpbl.leaf_vpbl); 2552 pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase, 2553 root_vpbl.pbl_pbase); 2554 } 2555 2556 nes_debug(NES_DBG_MR, "Leaving, ibmr=%p", ibmr); 2557 2558 return ibmr; 2559 case IWNES_MEMREG_TYPE_QP: 2560 case IWNES_MEMREG_TYPE_CQ: 2561 nespbl = kzalloc(sizeof(*nespbl), GFP_KERNEL); 2562 if (!nespbl) { 2563 nes_debug(NES_DBG_MR, "Unable to allocate PBL\n"); 2564 ib_umem_release(region); 2565 return ERR_PTR(-ENOMEM); 2566 } 2567 nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL); 2568 if (!nesmr) { 2569 ib_umem_release(region); 2570 kfree(nespbl); 2571 nes_debug(NES_DBG_MR, "Unable to allocate nesmr\n"); 2572 return ERR_PTR(-ENOMEM); 2573 } 2574 nesmr->region = region; 2575 nes_ucontext = to_nesucontext(pd->uobject->context); 2576 pbl_depth = region->length >> 12; 2577 pbl_depth += (region->length & (4096-1)) ? 1 : 0; 2578 nespbl->pbl_size = pbl_depth*sizeof(u64); 2579 if (req.reg_type == IWNES_MEMREG_TYPE_QP) { 2580 nes_debug(NES_DBG_MR, "Attempting to allocate QP PBL memory"); 2581 } else { 2582 nes_debug(NES_DBG_MR, "Attempting to allocate CP PBL memory"); 2583 } 2584 2585 nes_debug(NES_DBG_MR, " %u bytes, %u entries.\n", 2586 nespbl->pbl_size, pbl_depth); 2587 pbl = pci_alloc_consistent(nesdev->pcidev, nespbl->pbl_size, 2588 &nespbl->pbl_pbase); 2589 if (!pbl) { 2590 ib_umem_release(region); 2591 kfree(nesmr); 2592 kfree(nespbl); 2593 nes_debug(NES_DBG_MR, "Unable to allocate PBL memory\n"); 2594 return ERR_PTR(-ENOMEM); 2595 } 2596 2597 nespbl->pbl_vbase = (u64 *)pbl; 2598 nespbl->user_base = start; 2599 nes_debug(NES_DBG_MR, "Allocated PBL memory, %u bytes, pbl_pbase=%lx," 2600 " pbl_vbase=%p user_base=0x%lx\n", 2601 nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase, 2602 (void *) nespbl->pbl_vbase, nespbl->user_base); 2603 2604 list_for_each_entry(chunk, ®ion->chunk_list, list) { 2605 for (nmap_index = 0; nmap_index < chunk->nmap; ++nmap_index) { 2606 chunk_pages = sg_dma_len(&chunk->page_list[nmap_index]) >> 12; 2607 chunk_pages += (sg_dma_len(&chunk->page_list[nmap_index]) & (4096-1)) ? 1 : 0; 2608 nespbl->page = sg_page(&chunk->page_list[0]); 2609 for (page_index=0; page_index<chunk_pages; page_index++) { 2610 ((__le32 *)pbl)[0] = cpu_to_le32((u32) 2611 (sg_dma_address(&chunk->page_list[nmap_index])+ 2612 (page_index*4096))); 2613 ((__le32 *)pbl)[1] = cpu_to_le32(((u64) 2614 (sg_dma_address(&chunk->page_list[nmap_index])+ 2615 (page_index*4096)))>>32); 2616 nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl, 2617 (unsigned long long)*pbl, 2618 le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0])); 2619 pbl++; 2620 } 2621 } 2622 } 2623 if (req.reg_type == IWNES_MEMREG_TYPE_QP) { 2624 list_add_tail(&nespbl->list, &nes_ucontext->qp_reg_mem_list); 2625 } else { 2626 list_add_tail(&nespbl->list, &nes_ucontext->cq_reg_mem_list); 2627 } 2628 nesmr->ibmr.rkey = -1; 2629 nesmr->ibmr.lkey = -1; 2630 nesmr->mode = req.reg_type; 2631 return &nesmr->ibmr; 2632 } 2633 2634 return ERR_PTR(-ENOSYS); 2635} 2636 2637 2638/** 2639 * nes_dereg_mr 2640 */ 2641static int nes_dereg_mr(struct ib_mr *ib_mr) 2642{ 2643 struct nes_mr *nesmr = to_nesmr(ib_mr); 2644 struct nes_vnic *nesvnic = to_nesvnic(ib_mr->device); 2645 struct nes_device *nesdev = nesvnic->nesdev; 2646 struct nes_adapter *nesadapter = nesdev->nesadapter; 2647 struct nes_hw_cqp_wqe *cqp_wqe; 2648 struct nes_cqp_request *cqp_request; 2649 unsigned long flags; 2650 int ret; 2651 u16 major_code; 2652 u16 minor_code; 2653 2654 if (nesmr->region) { 2655 ib_umem_release(nesmr->region); 2656 } 2657 if (nesmr->mode != IWNES_MEMREG_TYPE_MEM) { 2658 kfree(nesmr); 2659 return 0; 2660 } 2661 2662 /* Deallocate the region with the adapter */ 2663 2664 cqp_request = nes_get_cqp_request(nesdev); 2665 if (cqp_request == NULL) { 2666 nes_debug(NES_DBG_MR, "Failed to get a cqp_request.\n"); 2667 return -ENOMEM; 2668 } 2669 cqp_request->waiting = 1; 2670 cqp_wqe = &cqp_request->cqp_wqe; 2671 2672 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 2673 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, 2674 NES_CQP_DEALLOCATE_STAG | NES_CQP_STAG_VA_TO | 2675 NES_CQP_STAG_DEALLOC_PBLS | NES_CQP_STAG_MR); 2676 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_STAG_WQE_STAG_IDX, ib_mr->rkey); 2677 2678 atomic_set(&cqp_request->refcount, 2); 2679 nes_post_cqp_request(nesdev, cqp_request); 2680 2681 /* Wait for CQP */ 2682 nes_debug(NES_DBG_MR, "Waiting for deallocate STag 0x%08X completed\n", ib_mr->rkey); 2683 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0), 2684 NES_EVENT_TIMEOUT); 2685 nes_debug(NES_DBG_MR, "Deallocate STag 0x%08X completed, wait_event_timeout ret = %u," 2686 " CQP Major:Minor codes = 0x%04X:0x%04X\n", 2687 ib_mr->rkey, ret, cqp_request->major_code, cqp_request->minor_code); 2688 2689 major_code = cqp_request->major_code; 2690 minor_code = cqp_request->minor_code; 2691 2692 nes_put_cqp_request(nesdev, cqp_request); 2693 2694 if (!ret) { 2695 nes_debug(NES_DBG_MR, "Timeout waiting to destroy STag," 2696 " ib_mr=%p, rkey = 0x%08X\n", 2697 ib_mr, ib_mr->rkey); 2698 return -ETIME; 2699 } else if (major_code) { 2700 nes_debug(NES_DBG_MR, "Error (0x%04X:0x%04X) while attempting" 2701 " to destroy STag, ib_mr=%p, rkey = 0x%08X\n", 2702 major_code, minor_code, ib_mr, ib_mr->rkey); 2703 return -EIO; 2704 } 2705 2706 if (nesmr->pbls_used != 0) { 2707 spin_lock_irqsave(&nesadapter->pbl_lock, flags); 2708 if (nesmr->pbl_4k) { 2709 nesadapter->free_4kpbl += nesmr->pbls_used; 2710 if (nesadapter->free_4kpbl > nesadapter->max_4kpbl) 2711 printk(KERN_ERR PFX "free 4KB PBLs(%u) has " 2712 "exceeded the max(%u)\n", 2713 nesadapter->free_4kpbl, 2714 nesadapter->max_4kpbl); 2715 } else { 2716 nesadapter->free_256pbl += nesmr->pbls_used; 2717 if (nesadapter->free_256pbl > nesadapter->max_256pbl) 2718 printk(KERN_ERR PFX "free 256B PBLs(%u) has " 2719 "exceeded the max(%u)\n", 2720 nesadapter->free_256pbl, 2721 nesadapter->max_256pbl); 2722 } 2723 spin_unlock_irqrestore(&nesadapter->pbl_lock, flags); 2724 } 2725 nes_free_resource(nesadapter, nesadapter->allocated_mrs, 2726 (ib_mr->rkey & 0x0fffff00) >> 8); 2727 2728 kfree(nesmr); 2729 2730 return 0; 2731} 2732 2733 2734/** 2735 * show_rev 2736 */ 2737static ssize_t show_rev(struct device *dev, struct device_attribute *attr, 2738 char *buf) 2739{ 2740 struct nes_ib_device *nesibdev = 2741 container_of(dev, struct nes_ib_device, ibdev.dev); 2742 struct nes_vnic *nesvnic = nesibdev->nesvnic; 2743 2744 nes_debug(NES_DBG_INIT, "\n"); 2745 return sprintf(buf, "%x\n", nesvnic->nesdev->nesadapter->hw_rev); 2746} 2747 2748 2749/** 2750 * show_fw_ver 2751 */ 2752static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, 2753 char *buf) 2754{ 2755 struct nes_ib_device *nesibdev = 2756 container_of(dev, struct nes_ib_device, ibdev.dev); 2757 struct nes_vnic *nesvnic = nesibdev->nesvnic; 2758 2759 nes_debug(NES_DBG_INIT, "\n"); 2760 return sprintf(buf, "%u.%u\n", 2761 (nesvnic->nesdev->nesadapter->firmware_version >> 16), 2762 (nesvnic->nesdev->nesadapter->firmware_version & 0x000000ff)); 2763} 2764 2765 2766/** 2767 * show_hca 2768 */ 2769static ssize_t show_hca(struct device *dev, struct device_attribute *attr, 2770 char *buf) 2771{ 2772 nes_debug(NES_DBG_INIT, "\n"); 2773 return sprintf(buf, "NES020\n"); 2774} 2775 2776 2777/** 2778 * show_board 2779 */ 2780static ssize_t show_board(struct device *dev, struct device_attribute *attr, 2781 char *buf) 2782{ 2783 nes_debug(NES_DBG_INIT, "\n"); 2784 return sprintf(buf, "%.*s\n", 32, "NES020 Board ID"); 2785} 2786 2787 2788static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 2789static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 2790static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 2791static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 2792 2793static struct device_attribute *nes_dev_attributes[] = { 2794 &dev_attr_hw_rev, 2795 &dev_attr_fw_ver, 2796 &dev_attr_hca_type, 2797 &dev_attr_board_id 2798}; 2799 2800 2801/** 2802 * nes_query_qp 2803 */ 2804static int nes_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 2805 int attr_mask, struct ib_qp_init_attr *init_attr) 2806{ 2807 struct nes_qp *nesqp = to_nesqp(ibqp); 2808 2809 nes_debug(NES_DBG_QP, "\n"); 2810 2811 attr->qp_access_flags = 0; 2812 attr->cap.max_send_wr = nesqp->hwqp.sq_size; 2813 attr->cap.max_recv_wr = nesqp->hwqp.rq_size; 2814 attr->cap.max_recv_sge = 1; 2815 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) 2816 attr->cap.max_inline_data = 0; 2817 else 2818 attr->cap.max_inline_data = 64; 2819 2820 init_attr->event_handler = nesqp->ibqp.event_handler; 2821 init_attr->qp_context = nesqp->ibqp.qp_context; 2822 init_attr->send_cq = nesqp->ibqp.send_cq; 2823 init_attr->recv_cq = nesqp->ibqp.recv_cq; 2824 init_attr->srq = nesqp->ibqp.srq = nesqp->ibqp.srq; 2825 init_attr->cap = attr->cap; 2826 2827 return 0; 2828} 2829 2830 2831/** 2832 * nes_hw_modify_qp 2833 */ 2834int nes_hw_modify_qp(struct nes_device *nesdev, struct nes_qp *nesqp, 2835 u32 next_iwarp_state, u32 termlen, u32 wait_completion) 2836{ 2837 struct nes_hw_cqp_wqe *cqp_wqe; 2838 /* struct iw_cm_id *cm_id = nesqp->cm_id; */ 2839 /* struct iw_cm_event cm_event; */ 2840 struct nes_cqp_request *cqp_request; 2841 int ret; 2842 u16 major_code; 2843 2844 nes_debug(NES_DBG_MOD_QP, "QP%u, refcount=%d\n", 2845 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount)); 2846 2847 cqp_request = nes_get_cqp_request(nesdev); 2848 if (cqp_request == NULL) { 2849 nes_debug(NES_DBG_MOD_QP, "Failed to get a cqp_request.\n"); 2850 return -ENOMEM; 2851 } 2852 if (wait_completion) { 2853 cqp_request->waiting = 1; 2854 } else { 2855 cqp_request->waiting = 0; 2856 } 2857 cqp_wqe = &cqp_request->cqp_wqe; 2858 2859 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX, 2860 NES_CQP_MODIFY_QP | NES_CQP_QP_TYPE_IWARP | next_iwarp_state); 2861 nes_debug(NES_DBG_MOD_QP, "using next_iwarp_state=%08x, wqe_words=%08x\n", 2862 next_iwarp_state, le32_to_cpu(cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX])); 2863 nes_fill_init_cqp_wqe(cqp_wqe, nesdev); 2864 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX, nesqp->hwqp.qp_id); 2865 set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, (u64)nesqp->nesqp_context_pbase); 2866 2867 /* If sending a terminate message, fill in the length (in words) */ 2868 if (((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == NES_CQP_QP_IWARP_STATE_TERMINATE) && 2869 !(next_iwarp_state & NES_CQP_QP_TERM_DONT_SEND_TERM_MSG)) { 2870 termlen = ((termlen + 3) >> 2) << NES_CQP_OP_TERMLEN_SHIFT; 2871 set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_NEW_MSS_IDX, termlen); 2872 } 2873 2874 atomic_set(&cqp_request->refcount, 2); 2875 nes_post_cqp_request(nesdev, cqp_request); 2876 2877 /* Wait for CQP */ 2878 if (wait_completion) { 2879 /* nes_debug(NES_DBG_MOD_QP, "Waiting for modify iWARP QP%u to complete.\n", 2880 nesqp->hwqp.qp_id); */ 2881 ret = wait_event_timeout(cqp_request->waitq, (cqp_request->request_done != 0), 2882 NES_EVENT_TIMEOUT); 2883 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u completed, wait_event_timeout ret=%u, " 2884 "CQP Major:Minor codes = 0x%04X:0x%04X.\n", 2885 nesqp->hwqp.qp_id, ret, cqp_request->major_code, cqp_request->minor_code); 2886 major_code = cqp_request->major_code; 2887 if (major_code) { 2888 nes_debug(NES_DBG_MOD_QP, "Modify iwarp QP%u failed" 2889 "CQP Major:Minor codes = 0x%04X:0x%04X, intended next state = 0x%08X.\n", 2890 nesqp->hwqp.qp_id, cqp_request->major_code, 2891 cqp_request->minor_code, next_iwarp_state); 2892 } 2893 2894 nes_put_cqp_request(nesdev, cqp_request); 2895 2896 if (!ret) 2897 return -ETIME; 2898 else if (major_code) 2899 return -EIO; 2900 else 2901 return 0; 2902 } else { 2903 return 0; 2904 } 2905} 2906 2907 2908/** 2909 * nes_modify_qp 2910 */ 2911int nes_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 2912 int attr_mask, struct ib_udata *udata) 2913{ 2914 struct nes_qp *nesqp = to_nesqp(ibqp); 2915 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); 2916 struct nes_device *nesdev = nesvnic->nesdev; 2917 /* u32 cqp_head; */ 2918 /* u32 counter; */ 2919 u32 next_iwarp_state = 0; 2920 int err; 2921 unsigned long qplockflags; 2922 int ret; 2923 u16 original_last_aeq; 2924 u8 issue_modify_qp = 0; 2925 u8 dont_wait = 0; 2926 2927 nes_debug(NES_DBG_MOD_QP, "QP%u: QP State=%u, cur QP State=%u," 2928 " iwarp_state=0x%X, refcount=%d\n", 2929 nesqp->hwqp.qp_id, attr->qp_state, nesqp->ibqp_state, 2930 nesqp->iwarp_state, atomic_read(&nesqp->refcount)); 2931 2932 spin_lock_irqsave(&nesqp->lock, qplockflags); 2933 2934 nes_debug(NES_DBG_MOD_QP, "QP%u: hw_iwarp_state=0x%X, hw_tcp_state=0x%X," 2935 " QP Access Flags=0x%X, attr_mask = 0x%0x\n", 2936 nesqp->hwqp.qp_id, nesqp->hw_iwarp_state, 2937 nesqp->hw_tcp_state, attr->qp_access_flags, attr_mask); 2938 2939 if (attr_mask & IB_QP_STATE) { 2940 switch (attr->qp_state) { 2941 case IB_QPS_INIT: 2942 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = init\n", 2943 nesqp->hwqp.qp_id); 2944 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_IDLE) { 2945 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2946 return -EINVAL; 2947 } 2948 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE; 2949 issue_modify_qp = 1; 2950 break; 2951 case IB_QPS_RTR: 2952 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rtr\n", 2953 nesqp->hwqp.qp_id); 2954 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_IDLE) { 2955 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2956 return -EINVAL; 2957 } 2958 next_iwarp_state = NES_CQP_QP_IWARP_STATE_IDLE; 2959 issue_modify_qp = 1; 2960 break; 2961 case IB_QPS_RTS: 2962 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = rts\n", 2963 nesqp->hwqp.qp_id); 2964 if (nesqp->iwarp_state>(u32)NES_CQP_QP_IWARP_STATE_RTS) { 2965 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2966 return -EINVAL; 2967 } 2968 if (nesqp->cm_id == NULL) { 2969 nes_debug(NES_DBG_MOD_QP, "QP%u: Failing attempt to move QP to RTS without a CM_ID. \n", 2970 nesqp->hwqp.qp_id ); 2971 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2972 return -EINVAL; 2973 } 2974 next_iwarp_state = NES_CQP_QP_IWARP_STATE_RTS; 2975 if (nesqp->iwarp_state != NES_CQP_QP_IWARP_STATE_RTS) 2976 next_iwarp_state |= NES_CQP_QP_CONTEXT_VALID | 2977 NES_CQP_QP_ARP_VALID | NES_CQP_QP_ORD_VALID; 2978 issue_modify_qp = 1; 2979 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_ESTABLISHED; 2980 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_RTS; 2981 nesqp->hte_added = 1; 2982 break; 2983 case IB_QPS_SQD: 2984 issue_modify_qp = 1; 2985 nes_debug(NES_DBG_MOD_QP, "QP%u: new state=closing. SQ head=%u, SQ tail=%u\n", 2986 nesqp->hwqp.qp_id, nesqp->hwqp.sq_head, nesqp->hwqp.sq_tail); 2987 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_CLOSING) { 2988 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2989 return 0; 2990 } else { 2991 if (nesqp->iwarp_state > (u32)NES_CQP_QP_IWARP_STATE_CLOSING) { 2992 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing" 2993 " ignored due to current iWARP state\n", 2994 nesqp->hwqp.qp_id); 2995 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 2996 return -EINVAL; 2997 } 2998 if (nesqp->hw_iwarp_state != NES_AEQE_IWARP_STATE_RTS) { 2999 nes_debug(NES_DBG_MOD_QP, "QP%u: State change to closing" 3000 " already done based on hw state.\n", 3001 nesqp->hwqp.qp_id); 3002 issue_modify_qp = 0; 3003 } 3004 switch (nesqp->hw_iwarp_state) { 3005 case NES_AEQE_IWARP_STATE_CLOSING: 3006 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING; 3007 case NES_AEQE_IWARP_STATE_TERMINATE: 3008 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE; 3009 break; 3010 case NES_AEQE_IWARP_STATE_ERROR: 3011 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR; 3012 break; 3013 default: 3014 next_iwarp_state = NES_CQP_QP_IWARP_STATE_CLOSING; 3015 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_CLOSING; 3016 break; 3017 } 3018 } 3019 break; 3020 case IB_QPS_SQE: 3021 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = terminate\n", 3022 nesqp->hwqp.qp_id); 3023 if (nesqp->iwarp_state>=(u32)NES_CQP_QP_IWARP_STATE_TERMINATE) { 3024 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3025 return -EINVAL; 3026 } 3027 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */ 3028 next_iwarp_state = NES_CQP_QP_IWARP_STATE_TERMINATE; 3029 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_TERMINATE; 3030 issue_modify_qp = 1; 3031 break; 3032 case IB_QPS_ERR: 3033 case IB_QPS_RESET: 3034 if (nesqp->iwarp_state == (u32)NES_CQP_QP_IWARP_STATE_ERROR) { 3035 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3036 return -EINVAL; 3037 } 3038 nes_debug(NES_DBG_MOD_QP, "QP%u: new state = error\n", 3039 nesqp->hwqp.qp_id); 3040 if (nesqp->term_flags) 3041 del_timer(&nesqp->terminate_timer); 3042 3043 next_iwarp_state = NES_CQP_QP_IWARP_STATE_ERROR; 3044 /* next_iwarp_state = (NES_CQP_QP_IWARP_STATE_TERMINATE | 0x02000000); */ 3045 if (nesqp->hte_added) { 3046 nes_debug(NES_DBG_MOD_QP, "set CQP_QP_DEL_HTE\n"); 3047 next_iwarp_state |= NES_CQP_QP_DEL_HTE; 3048 nesqp->hte_added = 0; 3049 } 3050 if ((nesqp->hw_tcp_state > NES_AEQE_TCP_STATE_CLOSED) && 3051 (nesdev->iw_status) && 3052 (nesqp->hw_tcp_state != NES_AEQE_TCP_STATE_TIME_WAIT)) { 3053 next_iwarp_state |= NES_CQP_QP_RESET; 3054 } else { 3055 nes_debug(NES_DBG_MOD_QP, "QP%u NOT setting NES_CQP_QP_RESET since TCP state = %u\n", 3056 nesqp->hwqp.qp_id, nesqp->hw_tcp_state); 3057 dont_wait = 1; 3058 } 3059 issue_modify_qp = 1; 3060 nesqp->hw_iwarp_state = NES_AEQE_IWARP_STATE_ERROR; 3061 break; 3062 default: 3063 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3064 return -EINVAL; 3065 break; 3066 } 3067 3068 nesqp->ibqp_state = attr->qp_state; 3069 if (((nesqp->iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) == 3070 (u32)NES_CQP_QP_IWARP_STATE_RTS) && 3071 ((next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK) > 3072 (u32)NES_CQP_QP_IWARP_STATE_RTS)) { 3073 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK; 3074 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n", 3075 nesqp->iwarp_state); 3076 } else { 3077 nesqp->iwarp_state = next_iwarp_state & NES_CQP_QP_IWARP_STATE_MASK; 3078 nes_debug(NES_DBG_MOD_QP, "Change nesqp->iwarp_state=%08x\n", 3079 nesqp->iwarp_state); 3080 } 3081 } 3082 3083 if (attr_mask & IB_QP_ACCESS_FLAGS) { 3084 if (attr->qp_access_flags & IB_ACCESS_LOCAL_WRITE) { 3085 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN | 3086 NES_QPCONTEXT_MISC_RDMA_READ_EN); 3087 issue_modify_qp = 1; 3088 } 3089 if (attr->qp_access_flags & IB_ACCESS_REMOTE_WRITE) { 3090 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN); 3091 issue_modify_qp = 1; 3092 } 3093 if (attr->qp_access_flags & IB_ACCESS_REMOTE_READ) { 3094 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_READ_EN); 3095 issue_modify_qp = 1; 3096 } 3097 if (attr->qp_access_flags & IB_ACCESS_MW_BIND) { 3098 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_WBIND_EN); 3099 issue_modify_qp = 1; 3100 } 3101 3102 if (nesqp->user_mode) { 3103 nesqp->nesqp_context->misc |= cpu_to_le32(NES_QPCONTEXT_MISC_RDMA_WRITE_EN | 3104 NES_QPCONTEXT_MISC_RDMA_READ_EN); 3105 issue_modify_qp = 1; 3106 } 3107 } 3108 3109 original_last_aeq = nesqp->last_aeq; 3110 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3111 3112 nes_debug(NES_DBG_MOD_QP, "issue_modify_qp=%u\n", issue_modify_qp); 3113 3114 ret = 0; 3115 3116 3117 if (issue_modify_qp) { 3118 nes_debug(NES_DBG_MOD_QP, "call nes_hw_modify_qp\n"); 3119 ret = nes_hw_modify_qp(nesdev, nesqp, next_iwarp_state, 0, 1); 3120 if (ret) 3121 nes_debug(NES_DBG_MOD_QP, "nes_hw_modify_qp (next_iwarp_state = 0x%08X)" 3122 " failed for QP%u.\n", 3123 next_iwarp_state, nesqp->hwqp.qp_id); 3124 3125 } 3126 3127 if ((issue_modify_qp) && (nesqp->ibqp_state > IB_QPS_RTS)) { 3128 nes_debug(NES_DBG_MOD_QP, "QP%u Issued ModifyQP refcount (%d)," 3129 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", 3130 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3131 original_last_aeq, nesqp->last_aeq); 3132 if ((!ret) || 3133 ((original_last_aeq != NES_AEQE_AEID_RDMAP_ROE_BAD_LLP_CLOSE) && 3134 (ret))) { 3135 if (dont_wait) { 3136 if (nesqp->cm_id && nesqp->hw_tcp_state != 0) { 3137 nes_debug(NES_DBG_MOD_QP, "QP%u Queuing fake disconnect for QP refcount (%d)," 3138 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", 3139 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3140 original_last_aeq, nesqp->last_aeq); 3141 /* this one is for the cm_disconnect thread */ 3142 spin_lock_irqsave(&nesqp->lock, qplockflags); 3143 nesqp->hw_tcp_state = NES_AEQE_TCP_STATE_CLOSED; 3144 nesqp->last_aeq = NES_AEQE_AEID_RESET_SENT; 3145 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3146 nes_cm_disconn(nesqp); 3147 } else { 3148 nes_debug(NES_DBG_MOD_QP, "QP%u No fake disconnect, QP refcount=%d\n", 3149 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount)); 3150 } 3151 } else { 3152 spin_lock_irqsave(&nesqp->lock, qplockflags); 3153 if (nesqp->cm_id) { 3154 /* These two are for the timer thread */ 3155 if (atomic_inc_return(&nesqp->close_timer_started) == 1) { 3156 nesqp->cm_id->add_ref(nesqp->cm_id); 3157 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d)," 3158 " need ae to finish up, original_last_aeq = 0x%04X." 3159 " last_aeq = 0x%04X, scheduling timer.\n", 3160 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3161 original_last_aeq, nesqp->last_aeq); 3162 schedule_nes_timer(nesqp->cm_node, (struct sk_buff *) nesqp, NES_TIMER_TYPE_CLOSE, 1, 0); 3163 } 3164 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3165 } else { 3166 spin_unlock_irqrestore(&nesqp->lock, qplockflags); 3167 nes_debug(NES_DBG_MOD_QP, "QP%u Not decrementing QP refcount (%d)," 3168 " need ae to finish up, original_last_aeq = 0x%04X." 3169 " last_aeq = 0x%04X.\n", 3170 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3171 original_last_aeq, nesqp->last_aeq); 3172 } 3173 } 3174 } else { 3175 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up," 3176 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", 3177 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3178 original_last_aeq, nesqp->last_aeq); 3179 } 3180 } else { 3181 nes_debug(NES_DBG_MOD_QP, "QP%u Decrementing QP refcount (%d), No ae to finish up," 3182 " original_last_aeq = 0x%04X. last_aeq = 0x%04X.\n", 3183 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount), 3184 original_last_aeq, nesqp->last_aeq); 3185 } 3186 3187 err = 0; 3188 3189 nes_debug(NES_DBG_MOD_QP, "QP%u Leaving, refcount=%d\n", 3190 nesqp->hwqp.qp_id, atomic_read(&nesqp->refcount)); 3191 3192 return err; 3193} 3194 3195 3196/** 3197 * nes_muticast_attach 3198 */ 3199static int nes_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 3200{ 3201 nes_debug(NES_DBG_INIT, "\n"); 3202 return -ENOSYS; 3203} 3204 3205 3206/** 3207 * nes_multicast_detach 3208 */ 3209static int nes_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 3210{ 3211 nes_debug(NES_DBG_INIT, "\n"); 3212 return -ENOSYS; 3213} 3214 3215 3216/** 3217 * nes_process_mad 3218 */ 3219static int nes_process_mad(struct ib_device *ibdev, int mad_flags, 3220 u8 port_num, struct ib_wc *in_wc, struct ib_grh *in_grh, 3221 struct ib_mad *in_mad, struct ib_mad *out_mad) 3222{ 3223 nes_debug(NES_DBG_INIT, "\n"); 3224 return -ENOSYS; 3225} 3226 3227static inline void 3228fill_wqe_sg_send(struct nes_hw_qp_wqe *wqe, struct ib_send_wr *ib_wr, u32 uselkey) 3229{ 3230 int sge_index; 3231 int total_payload_length = 0; 3232 for (sge_index = 0; sge_index < ib_wr->num_sge; sge_index++) { 3233 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX+(sge_index*4), 3234 ib_wr->sg_list[sge_index].addr); 3235 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_LENGTH0_IDX + (sge_index*4), 3236 ib_wr->sg_list[sge_index].length); 3237 if (uselkey) 3238 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 3239 (ib_wr->sg_list[sge_index].lkey)); 3240 else 3241 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX + (sge_index*4), 0); 3242 3243 total_payload_length += ib_wr->sg_list[sge_index].length; 3244 } 3245 nes_debug(NES_DBG_IW_TX, "UC UC UC, sending total_payload_length=%u \n", 3246 total_payload_length); 3247 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX, 3248 total_payload_length); 3249} 3250 3251/** 3252 * nes_post_send 3253 */ 3254static int nes_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr, 3255 struct ib_send_wr **bad_wr) 3256{ 3257 u64 u64temp; 3258 unsigned long flags = 0; 3259 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); 3260 struct nes_device *nesdev = nesvnic->nesdev; 3261 struct nes_qp *nesqp = to_nesqp(ibqp); 3262 struct nes_hw_qp_wqe *wqe; 3263 int err = 0; 3264 u32 qsize = nesqp->hwqp.sq_size; 3265 u32 head; 3266 u32 wqe_misc = 0; 3267 u32 wqe_count = 0; 3268 u32 counter; 3269 3270 if (nesqp->ibqp_state > IB_QPS_RTS) { 3271 err = -EINVAL; 3272 goto out; 3273 } 3274 3275 spin_lock_irqsave(&nesqp->lock, flags); 3276 3277 head = nesqp->hwqp.sq_head; 3278 3279 while (ib_wr) { 3280 /* Check for QP error */ 3281 if (nesqp->term_flags) { 3282 err = -EINVAL; 3283 break; 3284 } 3285 3286 /* Check for SQ overflow */ 3287 if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 1)) { 3288 err = -ENOMEM; 3289 break; 3290 } 3291 3292 wqe = &nesqp->hwqp.sq_vbase[head]; 3293 /* nes_debug(NES_DBG_IW_TX, "processing sq wqe for QP%u at %p, head = %u.\n", 3294 nesqp->hwqp.qp_id, wqe, head); */ 3295 nes_fill_init_qp_wqe(wqe, nesqp, head); 3296 u64temp = (u64)(ib_wr->wr_id); 3297 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, 3298 u64temp); 3299 switch (ib_wr->opcode) { 3300 case IB_WR_SEND: 3301 case IB_WR_SEND_WITH_INV: 3302 if (IB_WR_SEND == ib_wr->opcode) { 3303 if (ib_wr->send_flags & IB_SEND_SOLICITED) 3304 wqe_misc = NES_IWARP_SQ_OP_SENDSE; 3305 else 3306 wqe_misc = NES_IWARP_SQ_OP_SEND; 3307 } else { 3308 if (ib_wr->send_flags & IB_SEND_SOLICITED) 3309 wqe_misc = NES_IWARP_SQ_OP_SENDSEINV; 3310 else 3311 wqe_misc = NES_IWARP_SQ_OP_SENDINV; 3312 3313 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX, 3314 ib_wr->ex.invalidate_rkey); 3315 } 3316 3317 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) { 3318 err = -EINVAL; 3319 break; 3320 } 3321 3322 if (ib_wr->send_flags & IB_SEND_FENCE) 3323 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE; 3324 3325 if ((ib_wr->send_flags & IB_SEND_INLINE) && 3326 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) && 3327 (ib_wr->sg_list[0].length <= 64)) { 3328 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX], 3329 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length); 3330 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX, 3331 ib_wr->sg_list[0].length); 3332 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA; 3333 } else { 3334 fill_wqe_sg_send(wqe, ib_wr, 1); 3335 } 3336 3337 break; 3338 case IB_WR_RDMA_WRITE: 3339 wqe_misc = NES_IWARP_SQ_OP_RDMAW; 3340 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) { 3341 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=%u\n", 3342 ib_wr->num_sge, nesdev->nesadapter->max_sge); 3343 err = -EINVAL; 3344 break; 3345 } 3346 3347 if (ib_wr->send_flags & IB_SEND_FENCE) 3348 wqe_misc |= NES_IWARP_SQ_WQE_LOCAL_FENCE; 3349 3350 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX, 3351 ib_wr->wr.rdma.rkey); 3352 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX, 3353 ib_wr->wr.rdma.remote_addr); 3354 3355 if ((ib_wr->send_flags & IB_SEND_INLINE) && 3356 ((nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) == 0) && 3357 (ib_wr->sg_list[0].length <= 64)) { 3358 memcpy(&wqe->wqe_words[NES_IWARP_SQ_WQE_IMM_DATA_START_IDX], 3359 (void *)(unsigned long)ib_wr->sg_list[0].addr, ib_wr->sg_list[0].length); 3360 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX, 3361 ib_wr->sg_list[0].length); 3362 wqe_misc |= NES_IWARP_SQ_WQE_IMM_DATA; 3363 } else { 3364 fill_wqe_sg_send(wqe, ib_wr, 1); 3365 } 3366 3367 wqe->wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX] = 3368 wqe->wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]; 3369 break; 3370 case IB_WR_RDMA_READ: 3371 case IB_WR_RDMA_READ_WITH_INV: 3372 /* iWARP only supports 1 sge for RDMA reads */ 3373 if (ib_wr->num_sge > 1) { 3374 nes_debug(NES_DBG_IW_TX, "Exceeded max sge, ib_wr=%u, max=1\n", 3375 ib_wr->num_sge); 3376 err = -EINVAL; 3377 break; 3378 } 3379 if (ib_wr->opcode == IB_WR_RDMA_READ) { 3380 wqe_misc = NES_IWARP_SQ_OP_RDMAR; 3381 } else { 3382 wqe_misc = NES_IWARP_SQ_OP_RDMAR_LOCINV; 3383 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_INV_STAG_LOW_IDX, 3384 ib_wr->ex.invalidate_rkey); 3385 } 3386 3387 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_TO_LOW_IDX, 3388 ib_wr->wr.rdma.remote_addr); 3389 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_STAG_IDX, 3390 ib_wr->wr.rdma.rkey); 3391 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX, 3392 ib_wr->sg_list->length); 3393 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_FRAG0_LOW_IDX, 3394 ib_wr->sg_list->addr); 3395 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_STAG0_IDX, 3396 ib_wr->sg_list->lkey); 3397 break; 3398 case IB_WR_LOCAL_INV: 3399 wqe_misc = NES_IWARP_SQ_OP_LOCINV; 3400 set_wqe_32bit_value(wqe->wqe_words, 3401 NES_IWARP_SQ_LOCINV_WQE_INV_STAG_IDX, 3402 ib_wr->ex.invalidate_rkey); 3403 break; 3404 case IB_WR_FAST_REG_MR: 3405 { 3406 int i; 3407 int flags = ib_wr->wr.fast_reg.access_flags; 3408 struct nes_ib_fast_reg_page_list *pnesfrpl = 3409 container_of(ib_wr->wr.fast_reg.page_list, 3410 struct nes_ib_fast_reg_page_list, 3411 ibfrpl); 3412 u64 *src_page_list = pnesfrpl->ibfrpl.page_list; 3413 u64 *dst_page_list = pnesfrpl->nes_wqe_pbl.kva; 3414 3415 if (ib_wr->wr.fast_reg.page_list_len > 3416 (NES_4K_PBL_CHUNK_SIZE / sizeof(u64))) { 3417 nes_debug(NES_DBG_IW_TX, "SQ_FMR: bad page_list_len\n"); 3418 err = -EINVAL; 3419 break; 3420 } 3421 wqe_misc = NES_IWARP_SQ_OP_FAST_REG; 3422 set_wqe_64bit_value(wqe->wqe_words, 3423 NES_IWARP_SQ_FMR_WQE_VA_FBO_LOW_IDX, 3424 ib_wr->wr.fast_reg.iova_start); 3425 set_wqe_32bit_value(wqe->wqe_words, 3426 NES_IWARP_SQ_FMR_WQE_LENGTH_LOW_IDX, 3427 ib_wr->wr.fast_reg.length); 3428 set_wqe_32bit_value(wqe->wqe_words, 3429 NES_IWARP_SQ_FMR_WQE_MR_STAG_IDX, 3430 ib_wr->wr.fast_reg.rkey); 3431 /* Set page size: */ 3432 if (ib_wr->wr.fast_reg.page_shift == 12) { 3433 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_4K; 3434 } else if (ib_wr->wr.fast_reg.page_shift == 21) { 3435 wqe_misc |= NES_IWARP_SQ_FMR_WQE_PAGE_SIZE_2M; 3436 } else { 3437 nes_debug(NES_DBG_IW_TX, "Invalid page shift," 3438 " ib_wr=%u, max=1\n", ib_wr->num_sge); 3439 err = -EINVAL; 3440 break; 3441 } 3442 /* Set access_flags */ 3443 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_READ; 3444 if (flags & IB_ACCESS_LOCAL_WRITE) 3445 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_LOCAL_WRITE; 3446 3447 if (flags & IB_ACCESS_REMOTE_WRITE) 3448 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_WRITE; 3449 3450 if (flags & IB_ACCESS_REMOTE_READ) 3451 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_REMOTE_READ; 3452 3453 if (flags & IB_ACCESS_MW_BIND) 3454 wqe_misc |= NES_IWARP_SQ_FMR_WQE_RIGHTS_ENABLE_WINDOW_BIND; 3455 3456 /* Fill in PBL info: */ 3457 if (ib_wr->wr.fast_reg.page_list_len > 3458 pnesfrpl->ibfrpl.max_page_list_len) { 3459 nes_debug(NES_DBG_IW_TX, "Invalid page list length," 3460 " ib_wr=%p, value=%u, max=%u\n", 3461 ib_wr, ib_wr->wr.fast_reg.page_list_len, 3462 pnesfrpl->ibfrpl.max_page_list_len); 3463 err = -EINVAL; 3464 break; 3465 } 3466 3467 set_wqe_64bit_value(wqe->wqe_words, 3468 NES_IWARP_SQ_FMR_WQE_PBL_ADDR_LOW_IDX, 3469 pnesfrpl->nes_wqe_pbl.paddr); 3470 3471 set_wqe_32bit_value(wqe->wqe_words, 3472 NES_IWARP_SQ_FMR_WQE_PBL_LENGTH_IDX, 3473 ib_wr->wr.fast_reg.page_list_len * 8); 3474 3475 for (i = 0; i < ib_wr->wr.fast_reg.page_list_len; i++) 3476 dst_page_list[i] = cpu_to_le64(src_page_list[i]); 3477 3478 nes_debug(NES_DBG_IW_TX, "SQ_FMR: iova_start: %llx, " 3479 "length: %d, rkey: %0x, pgl_paddr: %llx, " 3480 "page_list_len: %u, wqe_misc: %x\n", 3481 (unsigned long long) ib_wr->wr.fast_reg.iova_start, 3482 ib_wr->wr.fast_reg.length, 3483 ib_wr->wr.fast_reg.rkey, 3484 (unsigned long long) pnesfrpl->nes_wqe_pbl.paddr, 3485 ib_wr->wr.fast_reg.page_list_len, 3486 wqe_misc); 3487 break; 3488 } 3489 default: 3490 /* error */ 3491 err = -EINVAL; 3492 break; 3493 } 3494 3495 if (err) 3496 break; 3497 3498 if ((ib_wr->send_flags & IB_SEND_SIGNALED) || nesqp->sig_all) 3499 wqe_misc |= NES_IWARP_SQ_WQE_SIGNALED_COMPL; 3500 3501 wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] = cpu_to_le32(wqe_misc); 3502 3503 ib_wr = ib_wr->next; 3504 head++; 3505 wqe_count++; 3506 if (head >= qsize) 3507 head = 0; 3508 3509 } 3510 3511 nesqp->hwqp.sq_head = head; 3512 barrier(); 3513 while (wqe_count) { 3514 counter = min(wqe_count, ((u32)255)); 3515 wqe_count -= counter; 3516 nes_write32(nesdev->regs + NES_WQE_ALLOC, 3517 (counter << 24) | 0x00800000 | nesqp->hwqp.qp_id); 3518 } 3519 3520 spin_unlock_irqrestore(&nesqp->lock, flags); 3521 3522out: 3523 if (err) 3524 *bad_wr = ib_wr; 3525 return err; 3526} 3527 3528 3529/** 3530 * nes_post_recv 3531 */ 3532static int nes_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr, 3533 struct ib_recv_wr **bad_wr) 3534{ 3535 u64 u64temp; 3536 unsigned long flags = 0; 3537 struct nes_vnic *nesvnic = to_nesvnic(ibqp->device); 3538 struct nes_device *nesdev = nesvnic->nesdev; 3539 struct nes_qp *nesqp = to_nesqp(ibqp); 3540 struct nes_hw_qp_wqe *wqe; 3541 int err = 0; 3542 int sge_index; 3543 u32 qsize = nesqp->hwqp.rq_size; 3544 u32 head; 3545 u32 wqe_count = 0; 3546 u32 counter; 3547 u32 total_payload_length; 3548 3549 if (nesqp->ibqp_state > IB_QPS_RTS) { 3550 err = -EINVAL; 3551 goto out; 3552 } 3553 3554 spin_lock_irqsave(&nesqp->lock, flags); 3555 3556 head = nesqp->hwqp.rq_head; 3557 3558 while (ib_wr) { 3559 /* Check for QP error */ 3560 if (nesqp->term_flags) { 3561 err = -EINVAL; 3562 break; 3563 } 3564 3565 if (ib_wr->num_sge > nesdev->nesadapter->max_sge) { 3566 err = -EINVAL; 3567 break; 3568 } 3569 /* Check for RQ overflow */ 3570 if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == (qsize - 1)) { 3571 err = -ENOMEM; 3572 break; 3573 } 3574 3575 nes_debug(NES_DBG_IW_RX, "ibwr sge count = %u.\n", ib_wr->num_sge); 3576 wqe = &nesqp->hwqp.rq_vbase[head]; 3577 3578 /* nes_debug(NES_DBG_IW_RX, "QP%u:processing rq wqe at %p, head = %u.\n", 3579 nesqp->hwqp.qp_id, wqe, head); */ 3580 nes_fill_init_qp_wqe(wqe, nesqp, head); 3581 u64temp = (u64)(ib_wr->wr_id); 3582 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX, 3583 u64temp); 3584 total_payload_length = 0; 3585 for (sge_index=0; sge_index < ib_wr->num_sge; sge_index++) { 3586 set_wqe_64bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_FRAG0_LOW_IDX+(sge_index*4), 3587 ib_wr->sg_list[sge_index].addr); 3588 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_LENGTH0_IDX+(sge_index*4), 3589 ib_wr->sg_list[sge_index].length); 3590 set_wqe_32bit_value(wqe->wqe_words,NES_IWARP_RQ_WQE_STAG0_IDX+(sge_index*4), 3591 ib_wr->sg_list[sge_index].lkey); 3592 3593 total_payload_length += ib_wr->sg_list[sge_index].length; 3594 } 3595 set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_RQ_WQE_TOTAL_PAYLOAD_IDX, 3596 total_payload_length); 3597 3598 ib_wr = ib_wr->next; 3599 head++; 3600 wqe_count++; 3601 if (head >= qsize) 3602 head = 0; 3603 } 3604 3605 nesqp->hwqp.rq_head = head; 3606 barrier(); 3607 while (wqe_count) { 3608 counter = min(wqe_count, ((u32)255)); 3609 wqe_count -= counter; 3610 nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter<<24) | nesqp->hwqp.qp_id); 3611 } 3612 3613 spin_unlock_irqrestore(&nesqp->lock, flags); 3614 3615out: 3616 if (err) 3617 *bad_wr = ib_wr; 3618 return err; 3619} 3620 3621 3622/** 3623 * nes_poll_cq 3624 */ 3625static int nes_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry) 3626{ 3627 u64 u64temp; 3628 u64 wrid; 3629 unsigned long flags = 0; 3630 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device); 3631 struct nes_device *nesdev = nesvnic->nesdev; 3632 struct nes_cq *nescq = to_nescq(ibcq); 3633 struct nes_qp *nesqp; 3634 struct nes_hw_cqe cqe; 3635 u32 head; 3636 u32 wq_tail = 0; 3637 u32 cq_size; 3638 u32 cqe_count = 0; 3639 u32 wqe_index; 3640 u32 u32temp; 3641 u32 move_cq_head = 1; 3642 u32 err_code; 3643 3644 nes_debug(NES_DBG_CQ, "\n"); 3645 3646 spin_lock_irqsave(&nescq->lock, flags); 3647 3648 head = nescq->hw_cq.cq_head; 3649 cq_size = nescq->hw_cq.cq_size; 3650 3651 while (cqe_count < num_entries) { 3652 if ((le32_to_cpu(nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX]) & 3653 NES_CQE_VALID) == 0) 3654 break; 3655 3656 /* 3657 * Make sure we read CQ entry contents *after* 3658 * we've checked the valid bit. 3659 */ 3660 rmb(); 3661 3662 cqe = nescq->hw_cq.cq_vbase[head]; 3663 u32temp = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]); 3664 wqe_index = u32temp & (nesdev->nesadapter->max_qp_wr - 1); 3665 u32temp &= ~(NES_SW_CONTEXT_ALIGN-1); 3666 /* parse CQE, get completion context from WQE (either rq or sq) */ 3667 u64temp = (((u64)(le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_HIGH_IDX])))<<32) | 3668 ((u64)u32temp); 3669 3670 if (u64temp) { 3671 nesqp = (struct nes_qp *)(unsigned long)u64temp; 3672 memset(entry, 0, sizeof *entry); 3673 if (cqe.cqe_words[NES_CQE_ERROR_CODE_IDX] == 0) { 3674 entry->status = IB_WC_SUCCESS; 3675 } else { 3676 err_code = le32_to_cpu(cqe.cqe_words[NES_CQE_ERROR_CODE_IDX]); 3677 if (NES_IWARP_CQE_MAJOR_DRV == (err_code >> 16)) { 3678 entry->status = err_code & 0x0000ffff; 3679 3680 /* The rest of the cqe's will be marked as flushed */ 3681 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_ERROR_CODE_IDX] = 3682 cpu_to_le32((NES_IWARP_CQE_MAJOR_FLUSH << 16) | 3683 NES_IWARP_CQE_MINOR_FLUSH); 3684 } else 3685 entry->status = IB_WC_WR_FLUSH_ERR; 3686 } 3687 3688 entry->qp = &nesqp->ibqp; 3689 entry->src_qp = nesqp->hwqp.qp_id; 3690 3691 if (le32_to_cpu(cqe.cqe_words[NES_CQE_OPCODE_IDX]) & NES_CQE_SQ) { 3692 if (nesqp->skip_lsmm) { 3693 nesqp->skip_lsmm = 0; 3694 nesqp->hwqp.sq_tail++; 3695 } 3696 3697 /* Working on a SQ Completion*/ 3698 wrid = (((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index]. 3699 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_HIGH_IDX]))) << 32) | 3700 ((u64)(cpu_to_le32((u32)nesqp->hwqp.sq_vbase[wqe_index]. 3701 wqe_words[NES_IWARP_SQ_WQE_COMP_SCRATCH_LOW_IDX]))); 3702 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index]. 3703 wqe_words[NES_IWARP_SQ_WQE_TOTAL_PAYLOAD_IDX]); 3704 3705 switch (le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index]. 3706 wqe_words[NES_IWARP_SQ_WQE_MISC_IDX]) & 0x3f) { 3707 case NES_IWARP_SQ_OP_RDMAW: 3708 nes_debug(NES_DBG_CQ, "Operation = RDMA WRITE.\n"); 3709 entry->opcode = IB_WC_RDMA_WRITE; 3710 break; 3711 case NES_IWARP_SQ_OP_RDMAR: 3712 nes_debug(NES_DBG_CQ, "Operation = RDMA READ.\n"); 3713 entry->opcode = IB_WC_RDMA_READ; 3714 entry->byte_len = le32_to_cpu(nesqp->hwqp.sq_vbase[wqe_index]. 3715 wqe_words[NES_IWARP_SQ_WQE_RDMA_LENGTH_IDX]); 3716 break; 3717 case NES_IWARP_SQ_OP_SENDINV: 3718 case NES_IWARP_SQ_OP_SENDSEINV: 3719 case NES_IWARP_SQ_OP_SEND: 3720 case NES_IWARP_SQ_OP_SENDSE: 3721 nes_debug(NES_DBG_CQ, "Operation = Send.\n"); 3722 entry->opcode = IB_WC_SEND; 3723 break; 3724 case NES_IWARP_SQ_OP_LOCINV: 3725 entry->opcode = IB_WR_LOCAL_INV; 3726 break; 3727 case NES_IWARP_SQ_OP_FAST_REG: 3728 entry->opcode = IB_WC_FAST_REG_MR; 3729 break; 3730 } 3731 3732 nesqp->hwqp.sq_tail = (wqe_index+1)&(nesqp->hwqp.sq_size - 1); 3733 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.sq_tail != nesqp->hwqp.sq_head)) { 3734 move_cq_head = 0; 3735 wq_tail = nesqp->hwqp.sq_tail; 3736 } 3737 } else { 3738 /* Working on a RQ Completion*/ 3739 entry->byte_len = le32_to_cpu(cqe.cqe_words[NES_CQE_PAYLOAD_LENGTH_IDX]); 3740 wrid = ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_LOW_IDX]))) | 3741 ((u64)(le32_to_cpu(nesqp->hwqp.rq_vbase[wqe_index].wqe_words[NES_IWARP_RQ_WQE_COMP_SCRATCH_HIGH_IDX]))<<32); 3742 entry->opcode = IB_WC_RECV; 3743 3744 nesqp->hwqp.rq_tail = (wqe_index+1)&(nesqp->hwqp.rq_size - 1); 3745 if ((entry->status != IB_WC_SUCCESS) && (nesqp->hwqp.rq_tail != nesqp->hwqp.rq_head)) { 3746 move_cq_head = 0; 3747 wq_tail = nesqp->hwqp.rq_tail; 3748 } 3749 } 3750 3751 entry->wr_id = wrid; 3752 entry++; 3753 cqe_count++; 3754 } 3755 3756 if (move_cq_head) { 3757 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_OPCODE_IDX] = 0; 3758 if (++head >= cq_size) 3759 head = 0; 3760 nescq->polled_completions++; 3761 3762 if ((nescq->polled_completions > (cq_size / 2)) || 3763 (nescq->polled_completions == 255)) { 3764 nes_debug(NES_DBG_CQ, "CQ%u Issuing CQE Allocate since more than half of cqes" 3765 " are pending %u of %u.\n", 3766 nescq->hw_cq.cq_number, nescq->polled_completions, cq_size); 3767 nes_write32(nesdev->regs+NES_CQE_ALLOC, 3768 nescq->hw_cq.cq_number | (nescq->polled_completions << 16)); 3769 nescq->polled_completions = 0; 3770 } 3771 } else { 3772 /* Update the wqe index and set status to flush */ 3773 wqe_index = le32_to_cpu(cqe.cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX]); 3774 wqe_index = (wqe_index & (~(nesdev->nesadapter->max_qp_wr - 1))) | wq_tail; 3775 nescq->hw_cq.cq_vbase[head].cqe_words[NES_CQE_COMP_COMP_CTX_LOW_IDX] = 3776 cpu_to_le32(wqe_index); 3777 move_cq_head = 1; /* ready for next pass */ 3778 } 3779 } 3780 3781 if (nescq->polled_completions) { 3782 nes_write32(nesdev->regs+NES_CQE_ALLOC, 3783 nescq->hw_cq.cq_number | (nescq->polled_completions << 16)); 3784 nescq->polled_completions = 0; 3785 } 3786 3787 nescq->hw_cq.cq_head = head; 3788 nes_debug(NES_DBG_CQ, "Reporting %u completions for CQ%u.\n", 3789 cqe_count, nescq->hw_cq.cq_number); 3790 3791 spin_unlock_irqrestore(&nescq->lock, flags); 3792 3793 return cqe_count; 3794} 3795 3796 3797/** 3798 * nes_req_notify_cq 3799 */ 3800static int nes_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags) 3801 { 3802 struct nes_vnic *nesvnic = to_nesvnic(ibcq->device); 3803 struct nes_device *nesdev = nesvnic->nesdev; 3804 struct nes_cq *nescq = to_nescq(ibcq); 3805 u32 cq_arm; 3806 3807 nes_debug(NES_DBG_CQ, "Requesting notification for CQ%u.\n", 3808 nescq->hw_cq.cq_number); 3809 3810 cq_arm = nescq->hw_cq.cq_number; 3811 if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_NEXT_COMP) 3812 cq_arm |= NES_CQE_ALLOC_NOTIFY_NEXT; 3813 else if ((notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED) 3814 cq_arm |= NES_CQE_ALLOC_NOTIFY_SE; 3815 else 3816 return -EINVAL; 3817 3818 nes_write32(nesdev->regs+NES_CQE_ALLOC, cq_arm); 3819 nes_read32(nesdev->regs+NES_CQE_ALLOC); 3820 3821 return 0; 3822} 3823 3824 3825/** 3826 * nes_init_ofa_device 3827 */ 3828struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev) 3829{ 3830 struct nes_ib_device *nesibdev; 3831 struct nes_vnic *nesvnic = netdev_priv(netdev); 3832 struct nes_device *nesdev = nesvnic->nesdev; 3833 3834 nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device)); 3835 if (nesibdev == NULL) { 3836 return NULL; 3837 } 3838 strlcpy(nesibdev->ibdev.name, "nes%d", IB_DEVICE_NAME_MAX); 3839 nesibdev->ibdev.owner = THIS_MODULE; 3840 3841 nesibdev->ibdev.node_type = RDMA_NODE_RNIC; 3842 memset(&nesibdev->ibdev.node_guid, 0, sizeof(nesibdev->ibdev.node_guid)); 3843 memcpy(&nesibdev->ibdev.node_guid, netdev->dev_addr, 6); 3844 3845 nesibdev->ibdev.uverbs_cmd_mask = 3846 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 3847 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 3848 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 3849 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 3850 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 3851 (1ull << IB_USER_VERBS_CMD_REG_MR) | 3852 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 3853 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 3854 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 3855 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 3856 (1ull << IB_USER_VERBS_CMD_CREATE_AH) | 3857 (1ull << IB_USER_VERBS_CMD_DESTROY_AH) | 3858 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 3859 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 3860 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 3861 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 3862 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 3863 (1ull << IB_USER_VERBS_CMD_ALLOC_MW) | 3864 (1ull << IB_USER_VERBS_CMD_BIND_MW) | 3865 (1ull << IB_USER_VERBS_CMD_DEALLOC_MW) | 3866 (1ull << IB_USER_VERBS_CMD_POST_RECV) | 3867 (1ull << IB_USER_VERBS_CMD_POST_SEND); 3868 3869 nesibdev->ibdev.phys_port_cnt = 1; 3870 nesibdev->ibdev.num_comp_vectors = 1; 3871 nesibdev->ibdev.dma_device = &nesdev->pcidev->dev; 3872 nesibdev->ibdev.dev.parent = &nesdev->pcidev->dev; 3873 nesibdev->ibdev.query_device = nes_query_device; 3874 nesibdev->ibdev.query_port = nes_query_port; 3875 nesibdev->ibdev.query_pkey = nes_query_pkey; 3876 nesibdev->ibdev.query_gid = nes_query_gid; 3877 nesibdev->ibdev.alloc_ucontext = nes_alloc_ucontext; 3878 nesibdev->ibdev.dealloc_ucontext = nes_dealloc_ucontext; 3879 nesibdev->ibdev.mmap = nes_mmap; 3880 nesibdev->ibdev.alloc_pd = nes_alloc_pd; 3881 nesibdev->ibdev.dealloc_pd = nes_dealloc_pd; 3882 nesibdev->ibdev.create_ah = nes_create_ah; 3883 nesibdev->ibdev.destroy_ah = nes_destroy_ah; 3884 nesibdev->ibdev.create_qp = nes_create_qp; 3885 nesibdev->ibdev.modify_qp = nes_modify_qp; 3886 nesibdev->ibdev.query_qp = nes_query_qp; 3887 nesibdev->ibdev.destroy_qp = nes_destroy_qp; 3888 nesibdev->ibdev.create_cq = nes_create_cq; 3889 nesibdev->ibdev.destroy_cq = nes_destroy_cq; 3890 nesibdev->ibdev.poll_cq = nes_poll_cq; 3891 nesibdev->ibdev.get_dma_mr = nes_get_dma_mr; 3892 nesibdev->ibdev.reg_phys_mr = nes_reg_phys_mr; 3893 nesibdev->ibdev.reg_user_mr = nes_reg_user_mr; 3894 nesibdev->ibdev.dereg_mr = nes_dereg_mr; 3895 nesibdev->ibdev.alloc_mw = nes_alloc_mw; 3896 nesibdev->ibdev.dealloc_mw = nes_dealloc_mw; 3897 nesibdev->ibdev.bind_mw = nes_bind_mw; 3898 3899 nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr; 3900 nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list; 3901 nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list; 3902 3903 nesibdev->ibdev.attach_mcast = nes_multicast_attach; 3904 nesibdev->ibdev.detach_mcast = nes_multicast_detach; 3905 nesibdev->ibdev.process_mad = nes_process_mad; 3906 3907 nesibdev->ibdev.req_notify_cq = nes_req_notify_cq; 3908 nesibdev->ibdev.post_send = nes_post_send; 3909 nesibdev->ibdev.post_recv = nes_post_recv; 3910 3911 nesibdev->ibdev.iwcm = kzalloc(sizeof(*nesibdev->ibdev.iwcm), GFP_KERNEL); 3912 if (nesibdev->ibdev.iwcm == NULL) { 3913 ib_dealloc_device(&nesibdev->ibdev); 3914 return NULL; 3915 } 3916 nesibdev->ibdev.iwcm->add_ref = nes_add_ref; 3917 nesibdev->ibdev.iwcm->rem_ref = nes_rem_ref; 3918 nesibdev->ibdev.iwcm->get_qp = nes_get_qp; 3919 nesibdev->ibdev.iwcm->connect = nes_connect; 3920 nesibdev->ibdev.iwcm->accept = nes_accept; 3921 nesibdev->ibdev.iwcm->reject = nes_reject; 3922 nesibdev->ibdev.iwcm->create_listen = nes_create_listen; 3923 nesibdev->ibdev.iwcm->destroy_listen = nes_destroy_listen; 3924 3925 return nesibdev; 3926} 3927 3928 3929/** 3930 * nes_handle_delayed_event 3931 */ 3932static void nes_handle_delayed_event(unsigned long data) 3933{ 3934 struct nes_vnic *nesvnic = (void *) data; 3935 3936 if (nesvnic->delayed_event != nesvnic->last_dispatched_event) { 3937 struct ib_event event; 3938 3939 event.device = &nesvnic->nesibdev->ibdev; 3940 if (!event.device) 3941 goto stop_timer; 3942 event.event = nesvnic->delayed_event; 3943 event.element.port_num = nesvnic->logical_port + 1; 3944 ib_dispatch_event(&event); 3945 } 3946 3947stop_timer: 3948 nesvnic->event_timer.function = NULL; 3949} 3950 3951 3952void nes_port_ibevent(struct nes_vnic *nesvnic) 3953{ 3954 struct nes_ib_device *nesibdev = nesvnic->nesibdev; 3955 struct nes_device *nesdev = nesvnic->nesdev; 3956 struct ib_event event; 3957 event.device = &nesibdev->ibdev; 3958 event.element.port_num = nesvnic->logical_port + 1; 3959 event.event = nesdev->iw_status ? IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR; 3960 3961 if (!nesvnic->event_timer.function) { 3962 ib_dispatch_event(&event); 3963 nesvnic->last_dispatched_event = event.event; 3964 nesvnic->event_timer.function = nes_handle_delayed_event; 3965 nesvnic->event_timer.data = (unsigned long) nesvnic; 3966 nesvnic->event_timer.expires = jiffies + NES_EVENT_DELAY; 3967 add_timer(&nesvnic->event_timer); 3968 } else { 3969 mod_timer(&nesvnic->event_timer, jiffies + NES_EVENT_DELAY); 3970 } 3971 nesvnic->delayed_event = event.event; 3972} 3973 3974 3975/** 3976 * nes_destroy_ofa_device 3977 */ 3978void nes_destroy_ofa_device(struct nes_ib_device *nesibdev) 3979{ 3980 if (nesibdev == NULL) 3981 return; 3982 3983 nes_unregister_ofa_device(nesibdev); 3984 3985 kfree(nesibdev->ibdev.iwcm); 3986 ib_dealloc_device(&nesibdev->ibdev); 3987} 3988 3989 3990/** 3991 * nes_register_ofa_device 3992 */ 3993int nes_register_ofa_device(struct nes_ib_device *nesibdev) 3994{ 3995 struct nes_vnic *nesvnic = nesibdev->nesvnic; 3996 struct nes_device *nesdev = nesvnic->nesdev; 3997 struct nes_adapter *nesadapter = nesdev->nesadapter; 3998 int i, ret; 3999 4000 ret = ib_register_device(&nesvnic->nesibdev->ibdev, NULL); 4001 if (ret) { 4002 return ret; 4003 } 4004 4005 /* Get the resources allocated to this device */ 4006 nesibdev->max_cq = (nesadapter->max_cq-NES_FIRST_QPN) / nesadapter->port_count; 4007 nesibdev->max_mr = nesadapter->max_mr / nesadapter->port_count; 4008 nesibdev->max_qp = (nesadapter->max_qp-NES_FIRST_QPN) / nesadapter->port_count; 4009 nesibdev->max_pd = nesadapter->max_pd / nesadapter->port_count; 4010 4011 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) { 4012 ret = device_create_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]); 4013 if (ret) { 4014 while (i > 0) { 4015 i--; 4016 device_remove_file(&nesibdev->ibdev.dev, 4017 nes_dev_attributes[i]); 4018 } 4019 ib_unregister_device(&nesibdev->ibdev); 4020 return ret; 4021 } 4022 } 4023 4024 nesvnic->of_device_registered = 1; 4025 4026 return 0; 4027} 4028 4029 4030/** 4031 * nes_unregister_ofa_device 4032 */ 4033static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev) 4034{ 4035 struct nes_vnic *nesvnic = nesibdev->nesvnic; 4036 int i; 4037 4038 for (i = 0; i < ARRAY_SIZE(nes_dev_attributes); ++i) { 4039 device_remove_file(&nesibdev->ibdev.dev, nes_dev_attributes[i]); 4040 } 4041 4042 if (nesvnic->of_device_registered) { 4043 ib_unregister_device(&nesibdev->ibdev); 4044 } 4045 4046 nesvnic->of_device_registered = 0; 4047} 4048