1/* 2 * Copyright (c) 2009-2013, 2016 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: stable/10/sys/dev/cxgbe/iw_cxgbe/provider.c 325611 2017-11-09 19:00:11Z hselasky $"); 34 35#define LINUXKPI_PARAM_PREFIX iw_cxgbe_ 36 37#include "opt_inet.h" 38 39#ifdef TCP_OFFLOAD 40#include <asm/pgtable.h> 41#include <linux/page.h> 42#include <rdma/ib_verbs.h> 43#include <rdma/ib_user_verbs.h> 44 45#include "iw_cxgbe.h" 46#include "user.h" 47 48static int fastreg_support = 1; 49module_param(fastreg_support, int, 0644); 50MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default = 1)"); 51 52static int c4iw_modify_port(struct ib_device *ibdev, 53 u8 port, int port_modify_mask, 54 struct ib_port_modify *props) 55{ 56 return -ENOSYS; 57} 58 59static struct ib_ah *c4iw_ah_create(struct ib_pd *pd, 60 struct ib_ah_attr *ah_attr) 61{ 62 return ERR_PTR(-ENOSYS); 63} 64 65static int c4iw_ah_destroy(struct ib_ah *ah) 66{ 67 return -ENOSYS; 68} 69 70static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 71{ 72 return -ENOSYS; 73} 74 75static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 76{ 77 return -ENOSYS; 78} 79 80static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags, 81 u8 port_num, struct ib_wc *in_wc, 82 struct ib_grh *in_grh, struct ib_mad *in_mad, 83 struct ib_mad *out_mad) 84{ 85 return -ENOSYS; 86} 87 88static int c4iw_dealloc_ucontext(struct ib_ucontext *context) 89{ 90 struct c4iw_dev *rhp = to_c4iw_dev(context->device); 91 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); 92 struct c4iw_mm_entry *mm, *tmp; 93 94 CTR2(KTR_IW_CXGBE, "%s context %p", __func__, context); 95 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) 96 kfree(mm); 97 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); 98 kfree(ucontext); 99 return 0; 100} 101 102static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev, 103 struct ib_udata *udata) 104{ 105 struct c4iw_ucontext *context; 106 struct c4iw_dev *rhp = to_c4iw_dev(ibdev); 107 108 CTR2(KTR_IW_CXGBE, "%s ibdev %p", __func__, ibdev); 109 context = kzalloc(sizeof(*context), GFP_KERNEL); 110 if (!context) 111 return ERR_PTR(-ENOMEM); 112 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); 113 INIT_LIST_HEAD(&context->mmaps); 114 spin_lock_init(&context->mmap_lock); 115 return &context->ibucontext; 116} 117 118#ifdef DOT5 119static inline pgprot_t t4_pgprot_wc(pgprot_t prot) 120{ 121 return pgprot_writecombine(prot); 122} 123#endif 124 125static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 126{ 127 int len = vma->vm_end - vma->vm_start; 128 u32 key = vma->vm_pgoff << PAGE_SHIFT; 129 struct c4iw_rdev *rdev; 130 int ret = 0; 131 struct c4iw_mm_entry *mm; 132 struct c4iw_ucontext *ucontext; 133 u64 addr, paddr; 134 135 u64 va_regs_res = 0, va_udbs_res = 0; 136 u64 len_regs_res = 0, len_udbs_res = 0; 137 138 CTR3(KTR_IW_CXGBE, "%s:1 ctx %p vma %p", __func__, context, vma); 139 140 CTR4(KTR_IW_CXGBE, "%s:1a pgoff 0x%lx key 0x%x len %d", __func__, 141 vma->vm_pgoff, key, len); 142 143 if (vma->vm_start & (PAGE_SIZE-1)) { 144 CTR3(KTR_IW_CXGBE, "%s:2 unaligned vm_start %u vma %p", 145 __func__, vma->vm_start, vma); 146 return -EINVAL; 147 } 148 149 rdev = &(to_c4iw_dev(context->device)->rdev); 150 ucontext = to_c4iw_ucontext(context); 151 152 mm = remove_mmap(ucontext, key, len); 153 if (!mm) { 154 CTR4(KTR_IW_CXGBE, "%s:3 ucontext %p key %u len %u", __func__, 155 ucontext, key, len); 156 return -EINVAL; 157 } 158 addr = mm->addr; 159 kfree(mm); 160 161 va_regs_res = (u64)rman_get_virtual(rdev->adap->regs_res); 162 len_regs_res = (u64)rman_get_size(rdev->adap->regs_res); 163 va_udbs_res = (u64)rman_get_virtual(rdev->adap->udbs_res); 164 len_udbs_res = (u64)rman_get_size(rdev->adap->udbs_res); 165 166 CTR6(KTR_IW_CXGBE, 167 "%s:4 addr %p, masync region %p:%p, udb region %p:%p", __func__, 168 addr, va_regs_res, va_regs_res+len_regs_res, va_udbs_res, 169 va_udbs_res+len_udbs_res); 170 171 if (addr >= va_regs_res && addr < va_regs_res + len_regs_res) { 172 CTR4(KTR_IW_CXGBE, "%s:5 MA_SYNC addr %p region %p, reglen %u", 173 __func__, addr, va_regs_res, len_regs_res); 174 /* 175 * MA_SYNC register... 176 */ 177 paddr = vtophys(addr); 178 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 179 ret = io_remap_pfn_range(vma, vma->vm_start, 180 paddr >> PAGE_SHIFT, 181 len, vma->vm_page_prot); 182 } else { 183 184 if (addr >= va_udbs_res && addr < va_udbs_res + len_udbs_res) { 185 /* 186 * Map user DB or OCQP memory... 187 */ 188 paddr = vtophys(addr); 189 CTR4(KTR_IW_CXGBE, 190 "%s:6 USER DB-GTS addr %p region %p, reglen %u", 191 __func__, addr, va_udbs_res, len_udbs_res); 192#ifdef DOT5 193 if (!is_t4(rdev->lldi.adapter_type) && map_udb_as_wc) 194 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot); 195 else 196#endif 197 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 198 ret = io_remap_pfn_range(vma, vma->vm_start, 199 paddr >> PAGE_SHIFT, 200 len, vma->vm_page_prot); 201 } else { 202 /* 203 * Map WQ or CQ contig dma memory... 204 */ 205 CTR4(KTR_IW_CXGBE, 206 "%s:7 WQ/CQ addr %p vm_start %u vma %p", __func__, 207 addr, vma->vm_start, vma); 208 ret = io_remap_pfn_range(vma, vma->vm_start, 209 addr >> PAGE_SHIFT, 210 len, vma->vm_page_prot); 211 } 212 } 213 CTR4(KTR_IW_CXGBE, "%s:8 ctx %p vma %p ret %u", __func__, context, vma, 214 ret); 215 return ret; 216} 217 218static int 219c4iw_deallocate_pd(struct ib_pd *pd) 220{ 221 struct c4iw_pd *php = to_c4iw_pd(pd); 222 struct c4iw_dev *rhp = php->rhp; 223 224 CTR3(KTR_IW_CXGBE, "%s: pd %p, pdid 0x%x", __func__, pd, php->pdid); 225 226 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid); 227 mutex_lock(&rhp->rdev.stats.lock); 228 rhp->rdev.stats.pd.cur--; 229 mutex_unlock(&rhp->rdev.stats.lock); 230 kfree(php); 231 232 return (0); 233} 234 235static struct ib_pd * 236c4iw_allocate_pd(struct ib_device *ibdev, struct ib_ucontext *context, 237 struct ib_udata *udata) 238{ 239 struct c4iw_pd *php; 240 u32 pdid; 241 struct c4iw_dev *rhp; 242 243 CTR4(KTR_IW_CXGBE, "%s: ibdev %p, context %p, data %p", __func__, ibdev, 244 context, udata); 245 rhp = (struct c4iw_dev *) ibdev; 246 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table); 247 if (!pdid) 248 return ERR_PTR(-EINVAL); 249 php = kzalloc(sizeof(*php), GFP_KERNEL); 250 if (!php) { 251 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid); 252 return ERR_PTR(-ENOMEM); 253 } 254 php->pdid = pdid; 255 php->rhp = rhp; 256 if (context) { 257 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) { 258 c4iw_deallocate_pd(&php->ibpd); 259 return ERR_PTR(-EFAULT); 260 } 261 } 262 mutex_lock(&rhp->rdev.stats.lock); 263 rhp->rdev.stats.pd.cur++; 264 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max) 265 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur; 266 mutex_unlock(&rhp->rdev.stats.lock); 267 268 CTR6(KTR_IW_CXGBE, 269 "%s: ibdev %p, context %p, data %p, pddid 0x%x, pd %p", __func__, 270 ibdev, context, udata, pdid, php); 271 return (&php->ibpd); 272} 273 274static int 275c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 276{ 277 278 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, pkey %p", __func__, 279 ibdev, port, index, pkey); 280 281 *pkey = 0; 282 return (0); 283} 284 285static int 286c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) 287{ 288 struct c4iw_dev *dev; 289 struct port_info *pi; 290 struct adapter *sc; 291 292 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, gid %p", __func__, 293 ibdev, port, index, gid); 294 295 memset(&gid->raw[0], 0, sizeof(gid->raw)); 296 dev = to_c4iw_dev(ibdev); 297 sc = dev->rdev.adap; 298 if (port == 0 || port > sc->params.nports) 299 return (-EINVAL); 300 pi = sc->port[port - 1]; 301 memcpy(&gid->raw[0], pi->vi[0].hw_addr, ETHER_ADDR_LEN); 302 return (0); 303} 304 305static int 306c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props) 307{ 308 struct c4iw_dev *dev = to_c4iw_dev(ibdev); 309 struct adapter *sc = dev->rdev.adap; 310 const int spg_ndesc = sc->params.sge.spg_len / EQ_ESIZE; 311 312 CTR3(KTR_IW_CXGBE, "%s ibdev %p, props %p", __func__, ibdev, props); 313 314 memset(props, 0, sizeof *props); 315 memcpy(&props->sys_image_guid, sc->port[0]->vi[0].hw_addr, 316 ETHER_ADDR_LEN); 317 props->hw_ver = sc->params.chipid; 318 props->fw_ver = sc->params.fw_vers; 319 props->device_cap_flags = dev->device_cap_flags; 320 props->page_size_cap = T4_PAGESIZE_MASK; 321 props->vendor_id = pci_get_vendor(sc->dev); 322 props->vendor_part_id = pci_get_device(sc->dev); 323 props->max_mr_size = T4_MAX_MR_SIZE; 324 props->max_qp = sc->vres.qp.size / 2; 325 props->max_qp_wr = T4_MAX_QP_DEPTH(spg_ndesc); 326 props->max_sge = T4_MAX_RECV_SGE; 327 props->max_sge_rd = 1; 328 props->max_res_rd_atom = sc->params.max_ird_adapter; 329 props->max_qp_rd_atom = min(sc->params.max_ordird_qp, 330 c4iw_max_read_depth); 331 props->max_qp_init_rd_atom = props->max_qp_rd_atom; 332 props->max_cq = sc->vres.qp.size; 333 props->max_cqe = T4_MAX_CQ_DEPTH; 334 props->max_mr = c4iw_num_stags(&dev->rdev); 335 props->max_pd = T4_MAX_NUM_PD; 336 props->local_ca_ack_delay = 0; 337 props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH; 338 339 return (0); 340} 341 342/* 343 * Returns -errno on failure. 344 */ 345static int 346c4iw_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) 347{ 348 struct c4iw_dev *dev; 349 struct adapter *sc; 350 struct port_info *pi; 351 struct ifnet *ifp; 352 353 CTR4(KTR_IW_CXGBE, "%s ibdev %p, port %d, props %p", __func__, ibdev, 354 port, props); 355 356 dev = to_c4iw_dev(ibdev); 357 sc = dev->rdev.adap; 358 if (port > sc->params.nports) 359 return (-EINVAL); 360 pi = sc->port[port - 1]; 361 ifp = pi->vi[0].ifp; 362 363 memset(props, 0, sizeof(struct ib_port_attr)); 364 props->max_mtu = IB_MTU_4096; 365 if (ifp->if_mtu >= 4096) 366 props->active_mtu = IB_MTU_4096; 367 else if (ifp->if_mtu >= 2048) 368 props->active_mtu = IB_MTU_2048; 369 else if (ifp->if_mtu >= 1024) 370 props->active_mtu = IB_MTU_1024; 371 else if (ifp->if_mtu >= 512) 372 props->active_mtu = IB_MTU_512; 373 else 374 props->active_mtu = IB_MTU_256; 375 props->state = pi->link_cfg.link_ok ? IB_PORT_ACTIVE : IB_PORT_DOWN; 376 props->port_cap_flags = 377 IB_PORT_CM_SUP | 378 IB_PORT_SNMP_TUNNEL_SUP | 379 IB_PORT_REINIT_SUP | 380 IB_PORT_DEVICE_MGMT_SUP | 381 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 382 props->gid_tbl_len = 1; 383 props->pkey_tbl_len = 1; 384 props->active_width = 2; 385 props->active_speed = 2; 386 props->max_msg_sz = -1; 387 388 return 0; 389} 390 391static int c4iw_port_immutable(struct ib_device *ibdev, u8 port_num, 392 struct ib_port_immutable *immutable) 393{ 394 struct ib_port_attr attr; 395 int err; 396 397 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP; 398 399 err = ib_query_port(ibdev, port_num, &attr); 400 if (err) 401 return err; 402 403 immutable->pkey_tbl_len = attr.pkey_tbl_len; 404 immutable->gid_tbl_len = attr.gid_tbl_len; 405 406 return 0; 407} 408 409/* 410 * Returns -errno on error. 411 */ 412int 413c4iw_register_device(struct c4iw_dev *dev) 414{ 415 struct adapter *sc = dev->rdev.adap; 416 struct ib_device *ibdev = &dev->ibdev; 417 struct iw_cm_verbs *iwcm; 418 int ret; 419 420 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, sc); 421 BUG_ON(!sc->port[0]); 422 strlcpy(ibdev->name, device_get_nameunit(sc->dev), sizeof(ibdev->name)); 423 memset(&ibdev->node_guid, 0, sizeof(ibdev->node_guid)); 424 memcpy(&ibdev->node_guid, sc->port[0]->vi[0].hw_addr, ETHER_ADDR_LEN); 425 ibdev->owner = THIS_MODULE; 426 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; 427 if (fastreg_support) 428 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 429 ibdev->local_dma_lkey = 0; 430 ibdev->uverbs_cmd_mask = 431 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 432 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 433 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 434 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 435 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 436 (1ull << IB_USER_VERBS_CMD_REG_MR) | 437 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 438 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 439 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 440 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 441 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 442 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 443 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 444 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 445 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 446 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 447 (1ull << IB_USER_VERBS_CMD_POST_SEND) | 448 (1ull << IB_USER_VERBS_CMD_POST_RECV); 449 ibdev->node_type = RDMA_NODE_RNIC; 450 strlcpy(ibdev->node_desc, C4IW_NODE_DESC, sizeof(ibdev->node_desc)); 451 ibdev->phys_port_cnt = sc->params.nports; 452 ibdev->num_comp_vectors = 1; 453 ibdev->dma_device = NULL; 454 ibdev->query_device = c4iw_query_device; 455 ibdev->query_port = c4iw_query_port; 456 ibdev->modify_port = c4iw_modify_port; 457 ibdev->query_pkey = c4iw_query_pkey; 458 ibdev->query_gid = c4iw_query_gid; 459 ibdev->alloc_ucontext = c4iw_alloc_ucontext; 460 ibdev->dealloc_ucontext = c4iw_dealloc_ucontext; 461 ibdev->mmap = c4iw_mmap; 462 ibdev->alloc_pd = c4iw_allocate_pd; 463 ibdev->dealloc_pd = c4iw_deallocate_pd; 464 ibdev->create_ah = c4iw_ah_create; 465 ibdev->destroy_ah = c4iw_ah_destroy; 466 ibdev->create_qp = c4iw_create_qp; 467 ibdev->modify_qp = c4iw_ib_modify_qp; 468 ibdev->query_qp = c4iw_ib_query_qp; 469 ibdev->destroy_qp = c4iw_destroy_qp; 470 ibdev->create_cq = c4iw_create_cq; 471 ibdev->destroy_cq = c4iw_destroy_cq; 472 ibdev->resize_cq = c4iw_resize_cq; 473 ibdev->poll_cq = c4iw_poll_cq; 474 ibdev->get_dma_mr = c4iw_get_dma_mr; 475 ibdev->reg_phys_mr = c4iw_register_phys_mem; 476 ibdev->rereg_phys_mr = c4iw_reregister_phys_mem; 477 ibdev->reg_user_mr = c4iw_reg_user_mr; 478 ibdev->dereg_mr = c4iw_dereg_mr; 479 ibdev->alloc_mw = c4iw_alloc_mw; 480 ibdev->bind_mw = c4iw_bind_mw; 481 ibdev->dealloc_mw = c4iw_dealloc_mw; 482 ibdev->alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr; 483 ibdev->alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl; 484 ibdev->free_fast_reg_page_list = c4iw_free_fastreg_pbl; 485 ibdev->attach_mcast = c4iw_multicast_attach; 486 ibdev->detach_mcast = c4iw_multicast_detach; 487 ibdev->process_mad = c4iw_process_mad; 488 ibdev->req_notify_cq = c4iw_arm_cq; 489 ibdev->post_send = c4iw_post_send; 490 ibdev->post_recv = c4iw_post_receive; 491 ibdev->uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION; 492 ibdev->get_port_immutable = c4iw_port_immutable; 493 494 iwcm = kmalloc(sizeof(*iwcm), GFP_KERNEL); 495 if (iwcm == NULL) 496 return (-ENOMEM); 497 498 iwcm->connect = c4iw_connect; 499 iwcm->accept = c4iw_accept_cr; 500 iwcm->reject = c4iw_reject_cr; 501 iwcm->create_listen_ep = c4iw_create_listen_ep; 502 iwcm->destroy_listen_ep = c4iw_destroy_listen_ep; 503 iwcm->newconn = process_newconn; 504 iwcm->add_ref = c4iw_qp_add_ref; 505 iwcm->rem_ref = c4iw_qp_rem_ref; 506 iwcm->get_qp = c4iw_get_qp; 507 ibdev->iwcm = iwcm; 508 509 ret = ib_register_device(&dev->ibdev, NULL); 510 if (ret) 511 kfree(iwcm); 512 513 return (ret); 514} 515 516void 517c4iw_unregister_device(struct c4iw_dev *dev) 518{ 519 520 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, 521 dev->rdev.adap); 522 ib_unregister_device(&dev->ibdev); 523 kfree(dev->ibdev.iwcm); 524 return; 525} 526#endif 527