1 /* 2 * Copyright (c) 2009-2013 Chelsio, Inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include "opt_inet.h" 36 37 #ifdef TCP_OFFLOAD 38 #include <linux/types.h> 39 #include <linux/kref.h> 40 #include <rdma/ib_umem.h> 41 #include <asm/atomic.h> 42 43 #include <common/t4_msg.h> 44 #include "iw_cxgbe.h" 45 46 #define T4_ULPTX_MIN_IO 32 47 #define C4IW_MAX_INLINE_SIZE 96 48 49 static int 50 write_adapter_mem(struct c4iw_rdev *rdev, u32 addr, u32 len, void *data) 51 { 52 struct adapter *sc = rdev->adap; 53 struct ulp_mem_io *ulpmc; 54 struct ulptx_idata *ulpsc; 55 u8 wr_len, *to_dp, *from_dp; 56 int copy_len, num_wqe, i, ret = 0; 57 struct c4iw_wr_wait wr_wait; 58 struct wrqe *wr; 59 u32 cmd; 60 61 cmd = cpu_to_be32(V_ULPTX_CMD(ULP_TX_MEM_WRITE)); 62 if (is_t4(sc)) 63 cmd |= cpu_to_be32(F_ULP_MEMIO_ORDER); 64 else 65 cmd |= cpu_to_be32(F_T5_ULP_MEMIO_IMM); 66 67 addr &= 0x7FFFFFF; 68 CTR3(KTR_IW_CXGBE, "%s addr 0x%x len %u", __func__, addr, len); 69 num_wqe = DIV_ROUND_UP(len, C4IW_MAX_INLINE_SIZE); 70 c4iw_init_wr_wait(&wr_wait); 71 for (i = 0; i < num_wqe; i++) { 72 73 copy_len = min(len, C4IW_MAX_INLINE_SIZE); 74 wr_len = roundup(sizeof *ulpmc + sizeof *ulpsc + 75 roundup(copy_len, T4_ULPTX_MIN_IO), 16); 76 77 wr = alloc_wrqe(wr_len, &sc->sge.mgmtq); 78 if (wr == NULL) 79 return (0); 80 ulpmc = wrtod(wr); 81 82 memset(ulpmc, 0, wr_len); 83 INIT_ULPTX_WR(ulpmc, wr_len, 0, 0); 84 85 if (i == (num_wqe-1)) { 86 ulpmc->wr.wr_hi = cpu_to_be32(V_FW_WR_OP(FW_ULPTX_WR) | 87 F_FW_WR_COMPL); 88 ulpmc->wr.wr_lo = (__force __be64)(unsigned long) &wr_wait; 89 } else 90 ulpmc->wr.wr_hi = cpu_to_be32(V_FW_WR_OP(FW_ULPTX_WR)); 91 ulpmc->wr.wr_mid = cpu_to_be32( 92 V_FW_WR_LEN16(DIV_ROUND_UP(wr_len, 16))); 93 94 ulpmc->cmd = cmd; 95 ulpmc->dlen = cpu_to_be32(V_ULP_MEMIO_DATA_LEN( 96 DIV_ROUND_UP(copy_len, T4_ULPTX_MIN_IO))); 97 ulpmc->len16 = cpu_to_be32(DIV_ROUND_UP(wr_len-sizeof(ulpmc->wr), 98 16)); 99 ulpmc->lock_addr = cpu_to_be32(V_ULP_MEMIO_ADDR(addr + i * 3)); 100 101 ulpsc = (struct ulptx_idata *)(ulpmc + 1); 102 ulpsc->cmd_more = cpu_to_be32(V_ULPTX_CMD(ULP_TX_SC_IMM)); 103 ulpsc->len = cpu_to_be32(roundup(copy_len, T4_ULPTX_MIN_IO)); 104 105 to_dp = (u8 *)(ulpsc + 1); 106 from_dp = (u8 *)data + i * C4IW_MAX_INLINE_SIZE; 107 if (data) 108 memcpy(to_dp, from_dp, copy_len); 109 else 110 memset(to_dp, 0, copy_len); 111 if (copy_len % T4_ULPTX_MIN_IO) 112 memset(to_dp + copy_len, 0, T4_ULPTX_MIN_IO - 113 (copy_len % T4_ULPTX_MIN_IO)); 114 t4_wrq_tx(sc, wr); 115 len -= C4IW_MAX_INLINE_SIZE; 116 } 117 118 ret = c4iw_wait_for_reply(rdev, &wr_wait, 0, 0, __func__); 119 return ret; 120 } 121 122 /* 123 * Build and write a TPT entry. 124 * IN: stag key, pdid, perm, bind_enabled, zbva, to, len, page_size, 125 * pbl_size and pbl_addr 126 * OUT: stag index 127 */ 128 static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry, 129 u32 *stag, u8 stag_state, u32 pdid, 130 enum fw_ri_stag_type type, enum fw_ri_mem_perms perm, 131 int bind_enabled, u32 zbva, u64 to, 132 u64 len, u8 page_size, u32 pbl_size, u32 pbl_addr) 133 { 134 int err; 135 struct fw_ri_tpte tpt; 136 u32 stag_idx; 137 static atomic_t key; 138 139 if (c4iw_fatal_error(rdev)) 140 return -EIO; 141 142 stag_state = stag_state > 0; 143 stag_idx = (*stag) >> 8; 144 145 if ((!reset_tpt_entry) && (*stag == T4_STAG_UNSET)) { 146 stag_idx = c4iw_get_resource(&rdev->resource.tpt_table); 147 if (!stag_idx) 148 return -ENOMEM; 149 mutex_lock(&rdev->stats.lock); 150 rdev->stats.stag.cur += 32; 151 if (rdev->stats.stag.cur > rdev->stats.stag.max) 152 rdev->stats.stag.max = rdev->stats.stag.cur; 153 mutex_unlock(&rdev->stats.lock); 154 *stag = (stag_idx << 8) | (atomic_inc_return(&key) & 0xff); 155 } 156 CTR5(KTR_IW_CXGBE, 157 "%s stag_state 0x%0x type 0x%0x pdid 0x%0x, stag_idx 0x%x", 158 __func__, stag_state, type, pdid, stag_idx); 159 160 /* write TPT entry */ 161 if (reset_tpt_entry) 162 memset(&tpt, 0, sizeof(tpt)); 163 else { 164 tpt.valid_to_pdid = cpu_to_be32(F_FW_RI_TPTE_VALID | 165 V_FW_RI_TPTE_STAGKEY((*stag & M_FW_RI_TPTE_STAGKEY)) | 166 V_FW_RI_TPTE_STAGSTATE(stag_state) | 167 V_FW_RI_TPTE_STAGTYPE(type) | V_FW_RI_TPTE_PDID(pdid)); 168 tpt.locread_to_qpid = cpu_to_be32(V_FW_RI_TPTE_PERM(perm) | 169 (bind_enabled ? F_FW_RI_TPTE_MWBINDEN : 0) | 170 V_FW_RI_TPTE_ADDRTYPE((zbva ? FW_RI_ZERO_BASED_TO : 171 FW_RI_VA_BASED_TO))| 172 V_FW_RI_TPTE_PS(page_size)); 173 tpt.nosnoop_pbladdr = !pbl_size ? 0 : cpu_to_be32( 174 V_FW_RI_TPTE_PBLADDR(PBL_OFF(rdev, pbl_addr)>>3)); 175 tpt.len_lo = cpu_to_be32((u32)(len & 0xffffffffUL)); 176 tpt.va_hi = cpu_to_be32((u32)(to >> 32)); 177 tpt.va_lo_fbo = cpu_to_be32((u32)(to & 0xffffffffUL)); 178 tpt.dca_mwbcnt_pstag = cpu_to_be32(0); 179 tpt.len_hi = cpu_to_be32((u32)(len >> 32)); 180 } 181 err = write_adapter_mem(rdev, stag_idx + 182 (rdev->adap->vres.stag.start >> 5), 183 sizeof(tpt), &tpt); 184 185 if (reset_tpt_entry) { 186 c4iw_put_resource(&rdev->resource.tpt_table, stag_idx); 187 mutex_lock(&rdev->stats.lock); 188 rdev->stats.stag.cur -= 32; 189 mutex_unlock(&rdev->stats.lock); 190 } 191 return err; 192 } 193 194 static int write_pbl(struct c4iw_rdev *rdev, __be64 *pbl, 195 u32 pbl_addr, u32 pbl_size) 196 { 197 int err; 198 199 CTR4(KTR_IW_CXGBE, "%s *pdb_addr 0x%x, pbl_base 0x%x, pbl_size %d", 200 __func__, pbl_addr, rdev->adap->vres.pbl.start, pbl_size); 201 202 err = write_adapter_mem(rdev, pbl_addr >> 5, pbl_size << 3, pbl); 203 return err; 204 } 205 206 static int dereg_mem(struct c4iw_rdev *rdev, u32 stag, u32 pbl_size, 207 u32 pbl_addr) 208 { 209 return write_tpt_entry(rdev, 1, &stag, 0, 0, 0, 0, 0, 0, 0UL, 0, 0, 210 pbl_size, pbl_addr); 211 } 212 213 static int allocate_window(struct c4iw_rdev *rdev, u32 * stag, u32 pdid) 214 { 215 *stag = T4_STAG_UNSET; 216 return write_tpt_entry(rdev, 0, stag, 0, pdid, FW_RI_STAG_MW, 0, 0, 0, 217 0UL, 0, 0, 0, 0); 218 } 219 220 static int deallocate_window(struct c4iw_rdev *rdev, u32 stag) 221 { 222 return write_tpt_entry(rdev, 1, &stag, 0, 0, 0, 0, 0, 0, 0UL, 0, 0, 0, 223 0); 224 } 225 226 static int allocate_stag(struct c4iw_rdev *rdev, u32 *stag, u32 pdid, 227 u32 pbl_size, u32 pbl_addr) 228 { 229 *stag = T4_STAG_UNSET; 230 return write_tpt_entry(rdev, 0, stag, 0, pdid, FW_RI_STAG_NSMR, 0, 0, 0, 231 0UL, 0, 0, pbl_size, pbl_addr); 232 } 233 234 static int finish_mem_reg(struct c4iw_mr *mhp, u32 stag) 235 { 236 u32 mmid; 237 238 mhp->attr.state = 1; 239 mhp->attr.stag = stag; 240 mmid = stag >> 8; 241 mhp->ibmr.rkey = mhp->ibmr.lkey = stag; 242 CTR3(KTR_IW_CXGBE, "%s mmid 0x%x mhp %p", __func__, mmid, mhp); 243 return insert_handle(mhp->rhp, &mhp->rhp->mmidr, mhp, mmid); 244 } 245 246 static int register_mem(struct c4iw_dev *rhp, struct c4iw_pd *php, 247 struct c4iw_mr *mhp, int shift) 248 { 249 u32 stag = T4_STAG_UNSET; 250 int ret; 251 252 ret = write_tpt_entry(&rhp->rdev, 0, &stag, 1, mhp->attr.pdid, 253 FW_RI_STAG_NSMR, mhp->attr.perms, 254 mhp->attr.mw_bind_enable, mhp->attr.zbva, 255 mhp->attr.va_fbo, mhp->attr.len, shift - 12, 256 mhp->attr.pbl_size, mhp->attr.pbl_addr); 257 if (ret) 258 return ret; 259 260 ret = finish_mem_reg(mhp, stag); 261 if (ret) 262 dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size, 263 mhp->attr.pbl_addr); 264 return ret; 265 } 266 267 static int reregister_mem(struct c4iw_dev *rhp, struct c4iw_pd *php, 268 struct c4iw_mr *mhp, int shift, int npages) 269 { 270 u32 stag; 271 int ret; 272 273 if (npages > mhp->attr.pbl_size) 274 return -ENOMEM; 275 276 stag = mhp->attr.stag; 277 ret = write_tpt_entry(&rhp->rdev, 0, &stag, 1, mhp->attr.pdid, 278 FW_RI_STAG_NSMR, mhp->attr.perms, 279 mhp->attr.mw_bind_enable, mhp->attr.zbva, 280 mhp->attr.va_fbo, mhp->attr.len, shift - 12, 281 mhp->attr.pbl_size, mhp->attr.pbl_addr); 282 if (ret) 283 return ret; 284 285 ret = finish_mem_reg(mhp, stag); 286 if (ret) 287 dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size, 288 mhp->attr.pbl_addr); 289 290 return ret; 291 } 292 293 static int alloc_pbl(struct c4iw_mr *mhp, int npages) 294 { 295 mhp->attr.pbl_addr = c4iw_pblpool_alloc(&mhp->rhp->rdev, 296 npages << 3); 297 298 if (!mhp->attr.pbl_addr) 299 return -ENOMEM; 300 301 mhp->attr.pbl_size = npages; 302 303 return 0; 304 } 305 306 static int build_phys_page_list(struct ib_phys_buf *buffer_list, 307 int num_phys_buf, u64 *iova_start, 308 u64 *total_size, int *npages, 309 int *shift, __be64 **page_list) 310 { 311 u64 mask; 312 int i, j, n; 313 314 mask = 0; 315 *total_size = 0; 316 for (i = 0; i < num_phys_buf; ++i) { 317 if (i != 0 && buffer_list[i].addr & ~PAGE_MASK) 318 return -EINVAL; 319 if (i != 0 && i != num_phys_buf - 1 && 320 (buffer_list[i].size & ~PAGE_MASK)) 321 return -EINVAL; 322 *total_size += buffer_list[i].size; 323 if (i > 0) 324 mask |= buffer_list[i].addr; 325 else 326 mask |= buffer_list[i].addr & PAGE_MASK; 327 if (i != num_phys_buf - 1) 328 mask |= buffer_list[i].addr + buffer_list[i].size; 329 else 330 mask |= (buffer_list[i].addr + buffer_list[i].size + 331 PAGE_SIZE - 1) & PAGE_MASK; 332 } 333 334 if (*total_size > 0xFFFFFFFFULL) 335 return -ENOMEM; 336 337 /* Find largest page shift we can use to cover buffers */ 338 for (*shift = PAGE_SHIFT; *shift < 27; ++(*shift)) 339 if ((1ULL << *shift) & mask) 340 break; 341 342 buffer_list[0].size += buffer_list[0].addr & ((1ULL << *shift) - 1); 343 buffer_list[0].addr &= ~0ull << *shift; 344 345 *npages = 0; 346 for (i = 0; i < num_phys_buf; ++i) 347 *npages += (buffer_list[i].size + 348 (1ULL << *shift) - 1) >> *shift; 349 350 if (!*npages) 351 return -EINVAL; 352 353 *page_list = kmalloc(sizeof(u64) * *npages, GFP_KERNEL); 354 if (!*page_list) 355 return -ENOMEM; 356 357 n = 0; 358 for (i = 0; i < num_phys_buf; ++i) 359 for (j = 0; 360 j < (buffer_list[i].size + (1ULL << *shift) - 1) >> *shift; 361 ++j) 362 (*page_list)[n++] = cpu_to_be64(buffer_list[i].addr + 363 ((u64) j << *shift)); 364 365 CTR6(KTR_IW_CXGBE, 366 "%s va 0x%llx mask 0x%llx shift %d len %lld pbl_size %d", __func__, 367 (unsigned long long)*iova_start, (unsigned long long)mask, *shift, 368 (unsigned long long)*total_size, *npages); 369 370 return 0; 371 372 } 373 374 int c4iw_reregister_phys_mem(struct ib_mr *mr, int mr_rereg_mask, 375 struct ib_pd *pd, struct ib_phys_buf *buffer_list, 376 int num_phys_buf, int acc, u64 *iova_start) 377 { 378 379 struct c4iw_mr mh, *mhp; 380 struct c4iw_pd *php; 381 struct c4iw_dev *rhp; 382 __be64 *page_list = NULL; 383 int shift = 0; 384 u64 total_size; 385 int npages = 0; 386 int ret; 387 388 CTR3(KTR_IW_CXGBE, "%s ib_mr %p ib_pd %p", __func__, mr, pd); 389 390 /* There can be no memory windows */ 391 if (atomic_read(&mr->usecnt)) 392 return -EINVAL; 393 394 mhp = to_c4iw_mr(mr); 395 rhp = mhp->rhp; 396 php = to_c4iw_pd(mr->pd); 397 398 /* make sure we are on the same adapter */ 399 if (rhp != php->rhp) 400 return -EINVAL; 401 402 memcpy(&mh, mhp, sizeof *mhp); 403 404 if (mr_rereg_mask & IB_MR_REREG_PD) 405 php = to_c4iw_pd(pd); 406 if (mr_rereg_mask & IB_MR_REREG_ACCESS) { 407 mh.attr.perms = c4iw_ib_to_tpt_access(acc); 408 mh.attr.mw_bind_enable = (acc & IB_ACCESS_MW_BIND) == 409 IB_ACCESS_MW_BIND; 410 } 411 if (mr_rereg_mask & IB_MR_REREG_TRANS) { 412 ret = build_phys_page_list(buffer_list, num_phys_buf, 413 iova_start, 414 &total_size, &npages, 415 &shift, &page_list); 416 if (ret) 417 return ret; 418 } 419 420 ret = reregister_mem(rhp, php, &mh, shift, npages); 421 kfree(page_list); 422 if (ret) 423 return ret; 424 if (mr_rereg_mask & IB_MR_REREG_PD) 425 mhp->attr.pdid = php->pdid; 426 if (mr_rereg_mask & IB_MR_REREG_ACCESS) 427 mhp->attr.perms = c4iw_ib_to_tpt_access(acc); 428 if (mr_rereg_mask & IB_MR_REREG_TRANS) { 429 mhp->attr.zbva = 0; 430 mhp->attr.va_fbo = *iova_start; 431 mhp->attr.page_size = shift - 12; 432 mhp->attr.len = (u32) total_size; 433 mhp->attr.pbl_size = npages; 434 } 435 436 return 0; 437 } 438 439 struct ib_mr *c4iw_register_phys_mem(struct ib_pd *pd, 440 struct ib_phys_buf *buffer_list, 441 int num_phys_buf, int acc, u64 *iova_start) 442 { 443 __be64 *page_list; 444 int shift; 445 u64 total_size; 446 int npages; 447 struct c4iw_dev *rhp; 448 struct c4iw_pd *php; 449 struct c4iw_mr *mhp; 450 int ret; 451 452 CTR2(KTR_IW_CXGBE, "%s ib_pd %p", __func__, pd); 453 php = to_c4iw_pd(pd); 454 rhp = php->rhp; 455 456 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL); 457 if (!mhp) 458 return ERR_PTR(-ENOMEM); 459 460 mhp->rhp = rhp; 461 462 /* First check that we have enough alignment */ 463 if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) { 464 ret = -EINVAL; 465 goto err; 466 } 467 468 if (num_phys_buf > 1 && 469 ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) { 470 ret = -EINVAL; 471 goto err; 472 } 473 474 ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start, 475 &total_size, &npages, &shift, 476 &page_list); 477 if (ret) 478 goto err; 479 480 ret = alloc_pbl(mhp, npages); 481 if (ret) { 482 kfree(page_list); 483 goto err_pbl; 484 } 485 486 ret = write_pbl(&mhp->rhp->rdev, page_list, mhp->attr.pbl_addr, 487 npages); 488 kfree(page_list); 489 if (ret) 490 goto err_pbl; 491 492 mhp->attr.pdid = php->pdid; 493 mhp->attr.zbva = 0; 494 495 mhp->attr.perms = c4iw_ib_to_tpt_access(acc); 496 mhp->attr.va_fbo = *iova_start; 497 mhp->attr.page_size = shift - 12; 498 499 mhp->attr.len = (u32) total_size; 500 mhp->attr.pbl_size = npages; 501 ret = register_mem(rhp, php, mhp, shift); 502 if (ret) 503 goto err_pbl; 504 505 return &mhp->ibmr; 506 507 err_pbl: 508 c4iw_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr, 509 mhp->attr.pbl_size << 3); 510 511 err: 512 kfree(mhp); 513 return ERR_PTR(ret); 514 515 } 516 517 struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc) 518 { 519 struct c4iw_dev *rhp; 520 struct c4iw_pd *php; 521 struct c4iw_mr *mhp; 522 int ret; 523 u32 stag = T4_STAG_UNSET; 524 525 CTR2(KTR_IW_CXGBE, "%s ib_pd %p", __func__, pd); 526 php = to_c4iw_pd(pd); 527 rhp = php->rhp; 528 529 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL); 530 if (!mhp) 531 return ERR_PTR(-ENOMEM); 532 533 mhp->rhp = rhp; 534 mhp->attr.pdid = php->pdid; 535 mhp->attr.perms = c4iw_ib_to_tpt_access(acc); 536 mhp->attr.mw_bind_enable = (acc&IB_ACCESS_MW_BIND) == IB_ACCESS_MW_BIND; 537 mhp->attr.zbva = 0; 538 mhp->attr.va_fbo = 0; 539 mhp->attr.page_size = 0; 540 mhp->attr.len = ~0UL; 541 mhp->attr.pbl_size = 0; 542 543 ret = write_tpt_entry(&rhp->rdev, 0, &stag, 1, php->pdid, 544 FW_RI_STAG_NSMR, mhp->attr.perms, 545 mhp->attr.mw_bind_enable, 0, 0, ~0UL, 0, 0, 0); 546 if (ret) 547 goto err1; 548 549 ret = finish_mem_reg(mhp, stag); 550 if (ret) 551 goto err2; 552 return &mhp->ibmr; 553 err2: 554 dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size, 555 mhp->attr.pbl_addr); 556 err1: 557 kfree(mhp); 558 return ERR_PTR(ret); 559 } 560 561 struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, 562 u64 virt, int acc, struct ib_udata *udata, int mr_id) 563 { 564 __be64 *pages; 565 int shift, n, len; 566 int i, k, entry; 567 int err = 0; 568 struct scatterlist *sg; 569 struct c4iw_dev *rhp; 570 struct c4iw_pd *php; 571 struct c4iw_mr *mhp; 572 573 CTR2(KTR_IW_CXGBE, "%s ib_pd %p", __func__, pd); 574 575 if (length == ~0ULL) 576 return ERR_PTR(-EINVAL); 577 578 if ((length + start) < start) 579 return ERR_PTR(-EINVAL); 580 581 php = to_c4iw_pd(pd); 582 rhp = php->rhp; 583 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL); 584 if (!mhp) 585 return ERR_PTR(-ENOMEM); 586 587 mhp->rhp = rhp; 588 589 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0); 590 if (IS_ERR(mhp->umem)) { 591 err = PTR_ERR(mhp->umem); 592 kfree(mhp); 593 return ERR_PTR(err); 594 } 595 596 shift = ffs(mhp->umem->page_size) - 1; 597 598 n = mhp->umem->nmap; 599 err = alloc_pbl(mhp, n); 600 if (err) 601 goto err; 602 603 pages = (__be64 *) __get_free_page(GFP_KERNEL); 604 if (!pages) { 605 err = -ENOMEM; 606 goto err_pbl; 607 } 608 609 i = n = 0; 610 for_each_sg(mhp->umem->sg_head.sgl, sg, mhp->umem->nmap, entry) { 611 len = sg_dma_len(sg) >> shift; 612 for (k = 0; k < len; ++k) { 613 pages[i++] = cpu_to_be64(sg_dma_address(sg) + 614 mhp->umem->page_size * k); 615 if (i == PAGE_SIZE / sizeof *pages) { 616 err = write_pbl(&mhp->rhp->rdev, 617 pages, 618 mhp->attr.pbl_addr + (n << 3), i); 619 if (err) 620 goto pbl_done; 621 n += i; 622 i = 0; 623 624 } 625 } 626 } 627 628 if (i) 629 err = write_pbl(&mhp->rhp->rdev, pages, 630 mhp->attr.pbl_addr + (n << 3), i); 631 632 pbl_done: 633 free_page((unsigned long) pages); 634 if (err) 635 goto err_pbl; 636 637 mhp->attr.pdid = php->pdid; 638 mhp->attr.zbva = 0; 639 mhp->attr.perms = c4iw_ib_to_tpt_access(acc); 640 mhp->attr.va_fbo = virt; 641 mhp->attr.page_size = shift - 12; 642 mhp->attr.len = length; 643 644 err = register_mem(rhp, php, mhp, shift); 645 if (err) 646 goto err_pbl; 647 648 return &mhp->ibmr; 649 650 err_pbl: 651 c4iw_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr, 652 mhp->attr.pbl_size << 3); 653 654 err: 655 ib_umem_release(mhp->umem); 656 kfree(mhp); 657 return ERR_PTR(err); 658 } 659 660 struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type) 661 { 662 struct c4iw_dev *rhp; 663 struct c4iw_pd *php; 664 struct c4iw_mw *mhp; 665 u32 mmid; 666 u32 stag = 0; 667 int ret; 668 669 php = to_c4iw_pd(pd); 670 rhp = php->rhp; 671 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL); 672 if (!mhp) 673 return ERR_PTR(-ENOMEM); 674 ret = allocate_window(&rhp->rdev, &stag, php->pdid); 675 if (ret) { 676 kfree(mhp); 677 return ERR_PTR(ret); 678 } 679 mhp->rhp = rhp; 680 mhp->attr.pdid = php->pdid; 681 mhp->attr.type = FW_RI_STAG_MW; 682 mhp->attr.stag = stag; 683 mmid = (stag) >> 8; 684 mhp->ibmw.rkey = stag; 685 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) { 686 deallocate_window(&rhp->rdev, mhp->attr.stag); 687 kfree(mhp); 688 return ERR_PTR(-ENOMEM); 689 } 690 CTR4(KTR_IW_CXGBE, "%s mmid 0x%x mhp %p stag 0x%x", __func__, mmid, mhp, 691 stag); 692 return &(mhp->ibmw); 693 } 694 695 int c4iw_dealloc_mw(struct ib_mw *mw) 696 { 697 struct c4iw_dev *rhp; 698 struct c4iw_mw *mhp; 699 u32 mmid; 700 701 mhp = to_c4iw_mw(mw); 702 rhp = mhp->rhp; 703 mmid = (mw->rkey) >> 8; 704 remove_handle(rhp, &rhp->mmidr, mmid); 705 deallocate_window(&rhp->rdev, mhp->attr.stag); 706 kfree(mhp); 707 CTR4(KTR_IW_CXGBE, "%s ib_mw %p mmid 0x%x ptr %p", __func__, mw, mmid, 708 mhp); 709 return 0; 710 } 711 712 struct ib_mr *c4iw_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth) 713 { 714 struct c4iw_dev *rhp; 715 struct c4iw_pd *php; 716 struct c4iw_mr *mhp; 717 u32 mmid; 718 u32 stag = 0; 719 int ret = 0; 720 721 php = to_c4iw_pd(pd); 722 rhp = php->rhp; 723 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL); 724 if (!mhp) { 725 ret = -ENOMEM; 726 goto err; 727 } 728 729 mhp->rhp = rhp; 730 ret = alloc_pbl(mhp, pbl_depth); 731 if (ret) 732 goto err1; 733 mhp->attr.pbl_size = pbl_depth; 734 ret = allocate_stag(&rhp->rdev, &stag, php->pdid, 735 mhp->attr.pbl_size, mhp->attr.pbl_addr); 736 if (ret) 737 goto err2; 738 mhp->attr.pdid = php->pdid; 739 mhp->attr.type = FW_RI_STAG_NSMR; 740 mhp->attr.stag = stag; 741 mhp->attr.state = 1; 742 mmid = (stag) >> 8; 743 mhp->ibmr.rkey = mhp->ibmr.lkey = stag; 744 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) { 745 ret = -ENOMEM; 746 goto err3; 747 } 748 749 CTR4(KTR_IW_CXGBE, "%s mmid 0x%x mhp %p stag 0x%x", __func__, mmid, mhp, 750 stag); 751 return &(mhp->ibmr); 752 err3: 753 dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size, 754 mhp->attr.pbl_addr); 755 err2: 756 c4iw_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr, 757 mhp->attr.pbl_size << 3); 758 err1: 759 kfree(mhp); 760 err: 761 return ERR_PTR(ret); 762 } 763 764 struct ib_fast_reg_page_list *c4iw_alloc_fastreg_pbl(struct ib_device *device, 765 int page_list_len) 766 { 767 struct c4iw_fr_page_list *c4pl; 768 struct c4iw_dev *dev = to_c4iw_dev(device); 769 bus_addr_t dma_addr; 770 int size = sizeof *c4pl + page_list_len * sizeof(u64); 771 772 c4pl = contigmalloc(size, 773 M_DEVBUF, M_NOWAIT, 0ul, ~0ul, 4096, 0); 774 if (c4pl) 775 dma_addr = vtophys(c4pl); 776 else 777 return ERR_PTR(-ENOMEM);; 778 779 pci_unmap_addr_set(c4pl, mapping, dma_addr); 780 c4pl->dma_addr = dma_addr; 781 c4pl->dev = dev; 782 c4pl->size = size; 783 c4pl->ibpl.page_list = (u64 *)(c4pl + 1); 784 c4pl->ibpl.max_page_list_len = page_list_len; 785 786 return &c4pl->ibpl; 787 } 788 789 void c4iw_free_fastreg_pbl(struct ib_fast_reg_page_list *ibpl) 790 { 791 struct c4iw_fr_page_list *c4pl = to_c4iw_fr_page_list(ibpl); 792 contigfree(c4pl, c4pl->size, M_DEVBUF); 793 } 794 795 int c4iw_dereg_mr(struct ib_mr *ib_mr) 796 { 797 struct c4iw_dev *rhp; 798 struct c4iw_mr *mhp; 799 u32 mmid; 800 801 CTR2(KTR_IW_CXGBE, "%s ib_mr %p", __func__, ib_mr); 802 /* There can be no memory windows */ 803 if (atomic_read(&ib_mr->usecnt)) 804 return -EINVAL; 805 806 mhp = to_c4iw_mr(ib_mr); 807 rhp = mhp->rhp; 808 mmid = mhp->attr.stag >> 8; 809 remove_handle(rhp, &rhp->mmidr, mmid); 810 dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size, 811 mhp->attr.pbl_addr); 812 if (mhp->attr.pbl_size) 813 c4iw_pblpool_free(&mhp->rhp->rdev, mhp->attr.pbl_addr, 814 mhp->attr.pbl_size << 3); 815 if (mhp->kva) 816 kfree((void *) (unsigned long) mhp->kva); 817 if (mhp->umem) 818 ib_umem_release(mhp->umem); 819 CTR3(KTR_IW_CXGBE, "%s mmid 0x%x ptr %p", __func__, mmid, mhp); 820 kfree(mhp); 821 return 0; 822 } 823 #endif 824