provider.c revision 331769
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/11/sys/dev/cxgbe/iw_cxgbe/provider.c 331769 2018-03-30 18:06:29Z 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" 47extern int use_dsgl; 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, const struct ib_wc *in_wc, 82 const struct ib_grh *in_grh, 83 const struct ib_mad_hdr *in_mad, 84 size_t in_mad_size, 85 struct ib_mad_hdr *out_mad, 86 size_t *out_mad_size, 87 u16 *out_mad_pkey_index) 88 89{ 90 return -ENOSYS; 91} 92 93void _c4iw_free_ucontext(struct kref *kref) 94{ 95 struct c4iw_ucontext *ucontext; 96 struct c4iw_dev *rhp; 97 struct c4iw_mm_entry *mm, *tmp; 98 99 ucontext = container_of(kref, struct c4iw_ucontext, kref); 100 rhp = to_c4iw_dev(ucontext->ibucontext.device); 101 102 CTR2(KTR_IW_CXGBE, "%s ucontext %p", __func__, ucontext); 103 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) 104 kfree(mm); 105 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); 106 kfree(ucontext); 107} 108 109static int c4iw_dealloc_ucontext(struct ib_ucontext *context) 110{ 111 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); 112 113 CTR2(KTR_IW_CXGBE, "%s context %p", __func__, context); 114 c4iw_put_ucontext(ucontext); 115 return 0; 116} 117 118static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev, 119 struct ib_udata *udata) 120{ 121 struct c4iw_ucontext *context; 122 struct c4iw_dev *rhp = to_c4iw_dev(ibdev); 123 static int warned; 124 struct c4iw_alloc_ucontext_resp uresp; 125 int ret = 0; 126 struct c4iw_mm_entry *mm = NULL; 127 128 PDBG("%s ibdev %p\n", __func__, ibdev); 129 context = kzalloc(sizeof(*context), GFP_KERNEL); 130 if (!context) { 131 ret = -ENOMEM; 132 goto err; 133 } 134 135 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); 136 INIT_LIST_HEAD(&context->mmaps); 137 spin_lock_init(&context->mmap_lock); 138 kref_init(&context->kref); 139 140 if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) { 141 if (!warned++) 142 log(LOG_ERR, "%s Warning - downlevel libcxgb4 " 143 "(non-fatal), device status page disabled.\n", 144 __func__); 145 rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED; 146 } else { 147 148 mm = kmalloc(sizeof *mm, GFP_KERNEL); 149 if (!mm) 150 goto err_free; 151 152 uresp.status_page_size = PAGE_SIZE; 153 154 spin_lock(&context->mmap_lock); 155 uresp.status_page_key = context->key; 156 context->key += PAGE_SIZE; 157 spin_unlock(&context->mmap_lock); 158 159 ret = ib_copy_to_udata(udata, &uresp, 160 sizeof(uresp) - sizeof(uresp.reserved)); 161 if (ret) 162 goto err_mm; 163 164 mm->key = uresp.status_page_key; 165 mm->addr = vtophys(rhp->rdev.status_page); 166 mm->len = PAGE_SIZE; 167 insert_mmap(context, mm); 168 } 169 return &context->ibucontext; 170err_mm: 171 kfree(mm); 172err_free: 173 kfree(context); 174err: 175 return ERR_PTR(ret); 176} 177 178static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 179{ 180 int len = vma->vm_end - vma->vm_start; 181 u32 key = vma->vm_pgoff << PAGE_SHIFT; 182 struct c4iw_rdev *rdev; 183 int ret = 0; 184 struct c4iw_mm_entry *mm; 185 struct c4iw_ucontext *ucontext; 186 u64 addr = 0; 187 188 CTR4(KTR_IW_CXGBE, "%s:1 ctx %p vma %p, vm_start %u", __func__, 189 context, vma, vma->vm_start); 190 191 CTR4(KTR_IW_CXGBE, "%s:1a pgoff 0x%lx key 0x%x len %d", __func__, 192 vma->vm_pgoff, key, len); 193 194 if (vma->vm_start & (PAGE_SIZE-1)) { 195 CTR3(KTR_IW_CXGBE, "%s:2 unaligned vm_start %u vma %p", 196 __func__, vma->vm_start, vma); 197 return -EINVAL; 198 } 199 200 rdev = &(to_c4iw_dev(context->device)->rdev); 201 ucontext = to_c4iw_ucontext(context); 202 203 mm = remove_mmap(ucontext, key, len); 204 if (!mm) { 205 CTR4(KTR_IW_CXGBE, "%s:3 ucontext %p key %u len %u", __func__, 206 ucontext, key, len); 207 return -EINVAL; 208 } 209 addr = mm->addr; 210 kfree(mm); 211 212 /* user DB-GTS registers if addr in udbs_res range, 213 * else WQ or CQ memory. 214 * */ 215 if (rdev->adap->iwt.wc_en && addr >= rdev->bar2_pa && 216 addr < rdev->bar2_pa + rdev->bar2_len) 217 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot); 218 219 ret = io_remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT, 220 len, vma->vm_page_prot); 221 CTR4(KTR_IW_CXGBE, "%s:4 ctx %p vma %p ret %u", __func__, context, vma, 222 ret); 223 return ret; 224} 225 226static int 227c4iw_deallocate_pd(struct ib_pd *pd) 228{ 229 struct c4iw_pd *php = to_c4iw_pd(pd); 230 struct c4iw_dev *rhp = php->rhp; 231 232 CTR3(KTR_IW_CXGBE, "%s: pd %p, pdid 0x%x", __func__, pd, php->pdid); 233 234 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid); 235 mutex_lock(&rhp->rdev.stats.lock); 236 rhp->rdev.stats.pd.cur--; 237 mutex_unlock(&rhp->rdev.stats.lock); 238 kfree(php); 239 240 return (0); 241} 242 243static struct ib_pd * 244c4iw_allocate_pd(struct ib_device *ibdev, struct ib_ucontext *context, 245 struct ib_udata *udata) 246{ 247 struct c4iw_pd *php; 248 u32 pdid; 249 struct c4iw_dev *rhp; 250 251 CTR4(KTR_IW_CXGBE, "%s: ibdev %p, context %p, data %p", __func__, ibdev, 252 context, udata); 253 rhp = (struct c4iw_dev *) ibdev; 254 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table); 255 if (!pdid) 256 return ERR_PTR(-EINVAL); 257 php = kzalloc(sizeof(*php), GFP_KERNEL); 258 if (!php) { 259 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid); 260 return ERR_PTR(-ENOMEM); 261 } 262 php->pdid = pdid; 263 php->rhp = rhp; 264 if (context) { 265 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) { 266 c4iw_deallocate_pd(&php->ibpd); 267 return ERR_PTR(-EFAULT); 268 } 269 } 270 mutex_lock(&rhp->rdev.stats.lock); 271 rhp->rdev.stats.pd.cur++; 272 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max) 273 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur; 274 mutex_unlock(&rhp->rdev.stats.lock); 275 276 CTR6(KTR_IW_CXGBE, 277 "%s: ibdev %p, context %p, data %p, pddid 0x%x, pd %p", __func__, 278 ibdev, context, udata, pdid, php); 279 return (&php->ibpd); 280} 281 282static int 283c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 284{ 285 286 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, pkey %p", __func__, 287 ibdev, port, index, pkey); 288 289 *pkey = 0; 290 return (0); 291} 292 293static int 294c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) 295{ 296 struct c4iw_dev *dev; 297 struct port_info *pi; 298 struct adapter *sc; 299 300 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, gid %p", __func__, 301 ibdev, port, index, gid); 302 303 memset(&gid->raw[0], 0, sizeof(gid->raw)); 304 dev = to_c4iw_dev(ibdev); 305 sc = dev->rdev.adap; 306 if (port == 0 || port > sc->params.nports) 307 return (-EINVAL); 308 pi = sc->port[port - 1]; 309 memcpy(&gid->raw[0], pi->vi[0].hw_addr, ETHER_ADDR_LEN); 310 return (0); 311} 312 313static int 314c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props, 315 struct ib_udata *uhw) 316{ 317 struct c4iw_dev *dev = to_c4iw_dev(ibdev); 318 struct adapter *sc = dev->rdev.adap; 319 320 CTR3(KTR_IW_CXGBE, "%s ibdev %p, props %p", __func__, ibdev, props); 321 322 if (uhw->inlen || uhw->outlen) 323 return -EINVAL; 324 325 memset(props, 0, sizeof *props); 326 memcpy(&props->sys_image_guid, sc->port[0]->vi[0].hw_addr, 327 ETHER_ADDR_LEN); 328 props->hw_ver = sc->params.chipid; 329 props->fw_ver = sc->params.fw_vers; 330 props->device_cap_flags = dev->device_cap_flags; 331 props->page_size_cap = T4_PAGESIZE_MASK; 332 props->vendor_id = pci_get_vendor(sc->dev); 333 props->vendor_part_id = pci_get_device(sc->dev); 334 props->max_mr_size = T4_MAX_MR_SIZE; 335 props->max_qp = sc->vres.qp.size / 2; 336 props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth; 337 props->max_sge = T4_MAX_RECV_SGE; 338 props->max_sge_rd = 1; 339 props->max_res_rd_atom = sc->params.max_ird_adapter; 340 props->max_qp_rd_atom = min(sc->params.max_ordird_qp, 341 c4iw_max_read_depth); 342 props->max_qp_init_rd_atom = props->max_qp_rd_atom; 343 props->max_cq = sc->vres.qp.size; 344 props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth; 345 props->max_mr = c4iw_num_stags(&dev->rdev); 346 props->max_pd = T4_MAX_NUM_PD; 347 props->local_ca_ack_delay = 0; 348 props->max_fast_reg_page_list_len = 349 t4_max_fr_depth(sc->params.ulptx_memwrite_dsgl && use_dsgl); 350 351 return (0); 352} 353 354/* 355 * Returns -errno on failure. 356 */ 357static int 358c4iw_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) 359{ 360 struct c4iw_dev *dev; 361 struct adapter *sc; 362 struct port_info *pi; 363 struct ifnet *ifp; 364 365 CTR4(KTR_IW_CXGBE, "%s ibdev %p, port %d, props %p", __func__, ibdev, 366 port, props); 367 368 dev = to_c4iw_dev(ibdev); 369 sc = dev->rdev.adap; 370 if (port > sc->params.nports) 371 return (-EINVAL); 372 pi = sc->port[port - 1]; 373 ifp = pi->vi[0].ifp; 374 375 memset(props, 0, sizeof(struct ib_port_attr)); 376 props->max_mtu = IB_MTU_4096; 377 if (ifp->if_mtu >= 4096) 378 props->active_mtu = IB_MTU_4096; 379 else if (ifp->if_mtu >= 2048) 380 props->active_mtu = IB_MTU_2048; 381 else if (ifp->if_mtu >= 1024) 382 props->active_mtu = IB_MTU_1024; 383 else if (ifp->if_mtu >= 512) 384 props->active_mtu = IB_MTU_512; 385 else 386 props->active_mtu = IB_MTU_256; 387 props->state = pi->link_cfg.link_ok ? IB_PORT_ACTIVE : IB_PORT_DOWN; 388 props->port_cap_flags = 389 IB_PORT_CM_SUP | 390 IB_PORT_SNMP_TUNNEL_SUP | 391 IB_PORT_REINIT_SUP | 392 IB_PORT_DEVICE_MGMT_SUP | 393 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 394 props->gid_tbl_len = 1; 395 props->pkey_tbl_len = 1; 396 props->active_width = 2; 397 props->active_speed = 2; 398 props->max_msg_sz = -1; 399 400 return 0; 401} 402 403static int c4iw_port_immutable(struct ib_device *ibdev, u8 port_num, 404 struct ib_port_immutable *immutable) 405{ 406 struct ib_port_attr attr; 407 int err; 408 409 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP; 410 411 err = ib_query_port(ibdev, port_num, &attr); 412 if (err) 413 return err; 414 415 immutable->pkey_tbl_len = attr.pkey_tbl_len; 416 immutable->gid_tbl_len = attr.gid_tbl_len; 417 418 return 0; 419} 420 421/* 422 * Returns -errno on error. 423 */ 424int 425c4iw_register_device(struct c4iw_dev *dev) 426{ 427 struct adapter *sc = dev->rdev.adap; 428 struct ib_device *ibdev = &dev->ibdev; 429 struct iw_cm_verbs *iwcm; 430 int ret; 431 432 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, sc); 433 BUG_ON(!sc->port[0]); 434 strlcpy(ibdev->name, device_get_nameunit(sc->dev), sizeof(ibdev->name)); 435 memset(&ibdev->node_guid, 0, sizeof(ibdev->node_guid)); 436 memcpy(&ibdev->node_guid, sc->port[0]->vi[0].hw_addr, ETHER_ADDR_LEN); 437 ibdev->owner = THIS_MODULE; 438 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; 439 if (fastreg_support) 440 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 441 ibdev->local_dma_lkey = 0; 442 ibdev->uverbs_cmd_mask = 443 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 444 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 445 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 446 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 447 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 448 (1ull << IB_USER_VERBS_CMD_REG_MR) | 449 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 450 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 451 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 452 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 453 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 454 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 455 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 456 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 457 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 458 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 459 (1ull << IB_USER_VERBS_CMD_POST_SEND) | 460 (1ull << IB_USER_VERBS_CMD_POST_RECV); 461 ibdev->node_type = RDMA_NODE_RNIC; 462 strlcpy(ibdev->node_desc, C4IW_NODE_DESC, sizeof(ibdev->node_desc)); 463 ibdev->phys_port_cnt = sc->params.nports; 464 ibdev->num_comp_vectors = 1; 465 ibdev->dma_device = NULL; 466 ibdev->query_device = c4iw_query_device; 467 ibdev->query_port = c4iw_query_port; 468 ibdev->modify_port = c4iw_modify_port; 469 ibdev->query_pkey = c4iw_query_pkey; 470 ibdev->query_gid = c4iw_query_gid; 471 ibdev->alloc_ucontext = c4iw_alloc_ucontext; 472 ibdev->dealloc_ucontext = c4iw_dealloc_ucontext; 473 ibdev->mmap = c4iw_mmap; 474 ibdev->alloc_pd = c4iw_allocate_pd; 475 ibdev->dealloc_pd = c4iw_deallocate_pd; 476 ibdev->create_ah = c4iw_ah_create; 477 ibdev->destroy_ah = c4iw_ah_destroy; 478 ibdev->create_qp = c4iw_create_qp; 479 ibdev->modify_qp = c4iw_ib_modify_qp; 480 ibdev->query_qp = c4iw_ib_query_qp; 481 ibdev->destroy_qp = c4iw_destroy_qp; 482 ibdev->create_cq = c4iw_create_cq; 483 ibdev->destroy_cq = c4iw_destroy_cq; 484 ibdev->resize_cq = c4iw_resize_cq; 485 ibdev->poll_cq = c4iw_poll_cq; 486 ibdev->get_dma_mr = c4iw_get_dma_mr; 487 ibdev->reg_user_mr = c4iw_reg_user_mr; 488 ibdev->dereg_mr = c4iw_dereg_mr; 489 ibdev->alloc_mw = c4iw_alloc_mw; 490 ibdev->dealloc_mw = c4iw_dealloc_mw; 491 ibdev->alloc_mr = c4iw_alloc_mr; 492 ibdev->map_mr_sg = c4iw_map_mr_sg; 493 ibdev->attach_mcast = c4iw_multicast_attach; 494 ibdev->detach_mcast = c4iw_multicast_detach; 495 ibdev->process_mad = c4iw_process_mad; 496 ibdev->req_notify_cq = c4iw_arm_cq; 497 ibdev->post_send = c4iw_post_send; 498 ibdev->post_recv = c4iw_post_receive; 499 ibdev->uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION; 500 ibdev->get_port_immutable = c4iw_port_immutable; 501 502 iwcm = kmalloc(sizeof(*iwcm), GFP_KERNEL); 503 if (iwcm == NULL) 504 return (-ENOMEM); 505 506 iwcm->connect = c4iw_connect; 507 iwcm->accept = c4iw_accept_cr; 508 iwcm->reject = c4iw_reject_cr; 509 iwcm->create_listen = c4iw_create_listen; 510 iwcm->destroy_listen = c4iw_destroy_listen; 511 iwcm->add_ref = c4iw_qp_add_ref; 512 iwcm->rem_ref = c4iw_qp_rem_ref; 513 iwcm->get_qp = c4iw_get_qp; 514 ibdev->iwcm = iwcm; 515 516 ret = ib_register_device(&dev->ibdev, NULL); 517 if (ret) 518 kfree(iwcm); 519 520 return (ret); 521} 522 523void 524c4iw_unregister_device(struct c4iw_dev *dev) 525{ 526 527 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, 528 dev->rdev.adap); 529 ib_unregister_device(&dev->ibdev); 530 kfree(dev->ibdev.iwcm); 531 return; 532} 533#endif 534