provider.c revision 318799
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 318799 2017-05-24 18:16:20Z np $"); 34 35#include "opt_inet.h" 36 37#ifdef TCP_OFFLOAD 38#include <asm/pgtable.h> 39#include <linux/page.h> 40#include <rdma/ib_verbs.h> 41#include <rdma/ib_user_verbs.h> 42 43#include "iw_cxgbe.h" 44#include "user.h" 45 46static int fastreg_support = 1; 47module_param(fastreg_support, int, 0644); 48MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default = 1)"); 49 50static int c4iw_modify_port(struct ib_device *ibdev, 51 u8 port, int port_modify_mask, 52 struct ib_port_modify *props) 53{ 54 return -ENOSYS; 55} 56 57static struct ib_ah *c4iw_ah_create(struct ib_pd *pd, 58 struct ib_ah_attr *ah_attr) 59{ 60 return ERR_PTR(-ENOSYS); 61} 62 63static int c4iw_ah_destroy(struct ib_ah *ah) 64{ 65 return -ENOSYS; 66} 67 68static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 69{ 70 return -ENOSYS; 71} 72 73static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 74{ 75 return -ENOSYS; 76} 77 78static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags, 79 u8 port_num, struct ib_wc *in_wc, 80 struct ib_grh *in_grh, struct ib_mad *in_mad, 81 struct ib_mad *out_mad) 82{ 83 return -ENOSYS; 84} 85 86static int c4iw_dealloc_ucontext(struct ib_ucontext *context) 87{ 88 struct c4iw_dev *rhp = to_c4iw_dev(context->device); 89 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); 90 struct c4iw_mm_entry *mm, *tmp; 91 92 CTR2(KTR_IW_CXGBE, "%s context %p", __func__, context); 93 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) 94 kfree(mm); 95 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); 96 kfree(ucontext); 97 return 0; 98} 99 100static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev, 101 struct ib_udata *udata) 102{ 103 struct c4iw_ucontext *context; 104 struct c4iw_dev *rhp = to_c4iw_dev(ibdev); 105 106 CTR2(KTR_IW_CXGBE, "%s ibdev %p", __func__, ibdev); 107 context = kzalloc(sizeof(*context), GFP_KERNEL); 108 if (!context) 109 return ERR_PTR(-ENOMEM); 110 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); 111 INIT_LIST_HEAD(&context->mmaps); 112 spin_lock_init(&context->mmap_lock); 113 return &context->ibucontext; 114} 115 116#ifdef DOT5 117static inline pgprot_t t4_pgprot_wc(pgprot_t prot) 118{ 119 return pgprot_writecombine(prot); 120} 121#endif 122 123static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 124{ 125 int len = vma->vm_end - vma->vm_start; 126 u32 key = vma->vm_pgoff << PAGE_SHIFT; 127 struct c4iw_rdev *rdev; 128 int ret = 0; 129 struct c4iw_mm_entry *mm; 130 struct c4iw_ucontext *ucontext; 131 u64 addr, paddr; 132 133 u64 va_regs_res = 0, va_udbs_res = 0; 134 u64 len_regs_res = 0, len_udbs_res = 0; 135 136 CTR3(KTR_IW_CXGBE, "%s:1 ctx %p vma %p", __func__, context, vma); 137 138 CTR4(KTR_IW_CXGBE, "%s:1a pgoff 0x%lx key 0x%x len %d", __func__, 139 vma->vm_pgoff, key, len); 140 141 if (vma->vm_start & (PAGE_SIZE-1)) { 142 CTR3(KTR_IW_CXGBE, "%s:2 unaligned vm_start %u vma %p", 143 __func__, vma->vm_start, vma); 144 return -EINVAL; 145 } 146 147 rdev = &(to_c4iw_dev(context->device)->rdev); 148 ucontext = to_c4iw_ucontext(context); 149 150 mm = remove_mmap(ucontext, key, len); 151 if (!mm) { 152 CTR4(KTR_IW_CXGBE, "%s:3 ucontext %p key %u len %u", __func__, 153 ucontext, key, len); 154 return -EINVAL; 155 } 156 addr = mm->addr; 157 kfree(mm); 158 159 va_regs_res = (u64)rman_get_virtual(rdev->adap->regs_res); 160 len_regs_res = (u64)rman_get_size(rdev->adap->regs_res); 161 va_udbs_res = (u64)rman_get_virtual(rdev->adap->udbs_res); 162 len_udbs_res = (u64)rman_get_size(rdev->adap->udbs_res); 163 164 CTR6(KTR_IW_CXGBE, 165 "%s:4 addr %p, masync region %p:%p, udb region %p:%p", __func__, 166 addr, va_regs_res, va_regs_res+len_regs_res, va_udbs_res, 167 va_udbs_res+len_udbs_res); 168 169 if (addr >= va_regs_res && addr < va_regs_res + len_regs_res) { 170 CTR4(KTR_IW_CXGBE, "%s:5 MA_SYNC addr %p region %p, reglen %u", 171 __func__, addr, va_regs_res, len_regs_res); 172 /* 173 * MA_SYNC register... 174 */ 175 paddr = vtophys(addr); 176 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 177 ret = io_remap_pfn_range(vma, vma->vm_start, 178 paddr >> PAGE_SHIFT, 179 len, vma->vm_page_prot); 180 } else { 181 182 if (addr >= va_udbs_res && addr < va_udbs_res + len_udbs_res) { 183 /* 184 * Map user DB or OCQP memory... 185 */ 186 paddr = vtophys(addr); 187 CTR4(KTR_IW_CXGBE, 188 "%s:6 USER DB-GTS addr %p region %p, reglen %u", 189 __func__, addr, va_udbs_res, len_udbs_res); 190#ifdef DOT5 191 if (!is_t4(rdev->lldi.adapter_type) && map_udb_as_wc) 192 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot); 193 else 194#endif 195 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 196 ret = io_remap_pfn_range(vma, vma->vm_start, 197 paddr >> PAGE_SHIFT, 198 len, vma->vm_page_prot); 199 } else { 200 /* 201 * Map WQ or CQ contig dma memory... 202 */ 203 CTR4(KTR_IW_CXGBE, 204 "%s:7 WQ/CQ addr %p vm_start %u vma %p", __func__, 205 addr, vma->vm_start, vma); 206 ret = io_remap_pfn_range(vma, vma->vm_start, 207 addr >> PAGE_SHIFT, 208 len, vma->vm_page_prot); 209 } 210 } 211 CTR4(KTR_IW_CXGBE, "%s:8 ctx %p vma %p ret %u", __func__, context, vma, 212 ret); 213 return ret; 214} 215 216static int 217c4iw_deallocate_pd(struct ib_pd *pd) 218{ 219 struct c4iw_pd *php = to_c4iw_pd(pd); 220 struct c4iw_dev *rhp = php->rhp; 221 222 CTR3(KTR_IW_CXGBE, "%s: pd %p, pdid 0x%x", __func__, pd, php->pdid); 223 224 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid); 225 mutex_lock(&rhp->rdev.stats.lock); 226 rhp->rdev.stats.pd.cur--; 227 mutex_unlock(&rhp->rdev.stats.lock); 228 kfree(php); 229 230 return (0); 231} 232 233static struct ib_pd * 234c4iw_allocate_pd(struct ib_device *ibdev, struct ib_ucontext *context, 235 struct ib_udata *udata) 236{ 237 struct c4iw_pd *php; 238 u32 pdid; 239 struct c4iw_dev *rhp; 240 241 CTR4(KTR_IW_CXGBE, "%s: ibdev %p, context %p, data %p", __func__, ibdev, 242 context, udata); 243 rhp = (struct c4iw_dev *) ibdev; 244 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table); 245 if (!pdid) 246 return ERR_PTR(-EINVAL); 247 php = kzalloc(sizeof(*php), GFP_KERNEL); 248 if (!php) { 249 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid); 250 return ERR_PTR(-ENOMEM); 251 } 252 php->pdid = pdid; 253 php->rhp = rhp; 254 if (context) { 255 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) { 256 c4iw_deallocate_pd(&php->ibpd); 257 return ERR_PTR(-EFAULT); 258 } 259 } 260 mutex_lock(&rhp->rdev.stats.lock); 261 rhp->rdev.stats.pd.cur++; 262 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max) 263 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur; 264 mutex_unlock(&rhp->rdev.stats.lock); 265 266 CTR6(KTR_IW_CXGBE, 267 "%s: ibdev %p, context %p, data %p, pddid 0x%x, pd %p", __func__, 268 ibdev, context, udata, pdid, php); 269 return (&php->ibpd); 270} 271 272static int 273c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 274{ 275 276 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, pkey %p", __func__, 277 ibdev, port, index, pkey); 278 279 *pkey = 0; 280 return (0); 281} 282 283static int 284c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) 285{ 286 struct c4iw_dev *dev; 287 struct port_info *pi; 288 struct adapter *sc; 289 290 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, gid %p", __func__, 291 ibdev, port, index, gid); 292 293 memset(&gid->raw[0], 0, sizeof(gid->raw)); 294 dev = to_c4iw_dev(ibdev); 295 sc = dev->rdev.adap; 296 if (port == 0 || port > sc->params.nports) 297 return (-EINVAL); 298 pi = sc->port[port - 1]; 299 memcpy(&gid->raw[0], pi->vi[0].hw_addr, ETHER_ADDR_LEN); 300 return (0); 301} 302 303static int 304c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props) 305{ 306 struct c4iw_dev *dev = to_c4iw_dev(ibdev); 307 struct adapter *sc = dev->rdev.adap; 308 const int spg_ndesc = sc->params.sge.spg_len / EQ_ESIZE; 309 310 CTR3(KTR_IW_CXGBE, "%s ibdev %p, props %p", __func__, ibdev, props); 311 312 memset(props, 0, sizeof *props); 313 memcpy(&props->sys_image_guid, sc->port[0]->vi[0].hw_addr, 314 ETHER_ADDR_LEN); 315 props->hw_ver = sc->params.chipid; 316 props->fw_ver = sc->params.fw_vers; 317 props->device_cap_flags = dev->device_cap_flags; 318 props->page_size_cap = T4_PAGESIZE_MASK; 319 props->vendor_id = pci_get_vendor(sc->dev); 320 props->vendor_part_id = pci_get_device(sc->dev); 321 props->max_mr_size = T4_MAX_MR_SIZE; 322 props->max_qp = sc->vres.qp.size / 2; 323 props->max_qp_wr = T4_MAX_QP_DEPTH(spg_ndesc); 324 props->max_sge = T4_MAX_RECV_SGE; 325 props->max_sge_rd = 1; 326 props->max_res_rd_atom = sc->params.max_ird_adapter; 327 props->max_qp_rd_atom = min(sc->params.max_ordird_qp, 328 c4iw_max_read_depth); 329 props->max_qp_init_rd_atom = props->max_qp_rd_atom; 330 props->max_cq = sc->vres.qp.size; 331 props->max_cqe = T4_MAX_CQ_DEPTH; 332 props->max_mr = c4iw_num_stags(&dev->rdev); 333 props->max_pd = T4_MAX_NUM_PD; 334 props->local_ca_ack_delay = 0; 335 props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH; 336 337 return (0); 338} 339 340/* 341 * Returns -errno on failure. 342 */ 343static int 344c4iw_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) 345{ 346 struct c4iw_dev *dev; 347 struct adapter *sc; 348 struct port_info *pi; 349 struct ifnet *ifp; 350 351 CTR4(KTR_IW_CXGBE, "%s ibdev %p, port %d, props %p", __func__, ibdev, 352 port, props); 353 354 dev = to_c4iw_dev(ibdev); 355 sc = dev->rdev.adap; 356 if (port > sc->params.nports) 357 return (-EINVAL); 358 pi = sc->port[port - 1]; 359 ifp = pi->vi[0].ifp; 360 361 memset(props, 0, sizeof(struct ib_port_attr)); 362 props->max_mtu = IB_MTU_4096; 363 if (ifp->if_mtu >= 4096) 364 props->active_mtu = IB_MTU_4096; 365 else if (ifp->if_mtu >= 2048) 366 props->active_mtu = IB_MTU_2048; 367 else if (ifp->if_mtu >= 1024) 368 props->active_mtu = IB_MTU_1024; 369 else if (ifp->if_mtu >= 512) 370 props->active_mtu = IB_MTU_512; 371 else 372 props->active_mtu = IB_MTU_256; 373 props->state = pi->link_cfg.link_ok ? IB_PORT_ACTIVE : IB_PORT_DOWN; 374 props->port_cap_flags = 375 IB_PORT_CM_SUP | 376 IB_PORT_SNMP_TUNNEL_SUP | 377 IB_PORT_REINIT_SUP | 378 IB_PORT_DEVICE_MGMT_SUP | 379 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 380 props->gid_tbl_len = 1; 381 props->pkey_tbl_len = 1; 382 props->active_width = 2; 383 props->active_speed = 2; 384 props->max_msg_sz = -1; 385 386 return 0; 387} 388 389/* 390 * Returns -errno on error. 391 */ 392int 393c4iw_register_device(struct c4iw_dev *dev) 394{ 395 struct adapter *sc = dev->rdev.adap; 396 struct ib_device *ibdev = &dev->ibdev; 397 struct iw_cm_verbs *iwcm; 398 int ret; 399 400 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, sc); 401 BUG_ON(!sc->port[0]); 402 strlcpy(ibdev->name, device_get_nameunit(sc->dev), sizeof(ibdev->name)); 403 memset(&ibdev->node_guid, 0, sizeof(ibdev->node_guid)); 404 memcpy(&ibdev->node_guid, sc->port[0]->vi[0].hw_addr, ETHER_ADDR_LEN); 405 ibdev->owner = THIS_MODULE; 406 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; 407 if (fastreg_support) 408 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 409 ibdev->local_dma_lkey = 0; 410 ibdev->uverbs_cmd_mask = 411 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 412 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 413 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 414 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 415 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 416 (1ull << IB_USER_VERBS_CMD_REG_MR) | 417 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 418 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 419 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 420 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 421 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 422 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 423 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 424 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 425 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 426 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 427 (1ull << IB_USER_VERBS_CMD_POST_SEND) | 428 (1ull << IB_USER_VERBS_CMD_POST_RECV); 429 ibdev->node_type = RDMA_NODE_RNIC; 430 strlcpy(ibdev->node_desc, C4IW_NODE_DESC, sizeof(ibdev->node_desc)); 431 ibdev->phys_port_cnt = sc->params.nports; 432 ibdev->num_comp_vectors = 1; 433 ibdev->dma_device = NULL; 434 ibdev->query_device = c4iw_query_device; 435 ibdev->query_port = c4iw_query_port; 436 ibdev->modify_port = c4iw_modify_port; 437 ibdev->query_pkey = c4iw_query_pkey; 438 ibdev->query_gid = c4iw_query_gid; 439 ibdev->alloc_ucontext = c4iw_alloc_ucontext; 440 ibdev->dealloc_ucontext = c4iw_dealloc_ucontext; 441 ibdev->mmap = c4iw_mmap; 442 ibdev->alloc_pd = c4iw_allocate_pd; 443 ibdev->dealloc_pd = c4iw_deallocate_pd; 444 ibdev->create_ah = c4iw_ah_create; 445 ibdev->destroy_ah = c4iw_ah_destroy; 446 ibdev->create_qp = c4iw_create_qp; 447 ibdev->modify_qp = c4iw_ib_modify_qp; 448 ibdev->query_qp = c4iw_ib_query_qp; 449 ibdev->destroy_qp = c4iw_destroy_qp; 450 ibdev->create_cq = c4iw_create_cq; 451 ibdev->destroy_cq = c4iw_destroy_cq; 452 ibdev->resize_cq = c4iw_resize_cq; 453 ibdev->poll_cq = c4iw_poll_cq; 454 ibdev->get_dma_mr = c4iw_get_dma_mr; 455 ibdev->reg_phys_mr = c4iw_register_phys_mem; 456 ibdev->rereg_phys_mr = c4iw_reregister_phys_mem; 457 ibdev->reg_user_mr = c4iw_reg_user_mr; 458 ibdev->dereg_mr = c4iw_dereg_mr; 459 ibdev->alloc_mw = c4iw_alloc_mw; 460 ibdev->bind_mw = c4iw_bind_mw; 461 ibdev->dealloc_mw = c4iw_dealloc_mw; 462 ibdev->alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr; 463 ibdev->alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl; 464 ibdev->free_fast_reg_page_list = c4iw_free_fastreg_pbl; 465 ibdev->attach_mcast = c4iw_multicast_attach; 466 ibdev->detach_mcast = c4iw_multicast_detach; 467 ibdev->process_mad = c4iw_process_mad; 468 ibdev->req_notify_cq = c4iw_arm_cq; 469 ibdev->post_send = c4iw_post_send; 470 ibdev->post_recv = c4iw_post_receive; 471 ibdev->uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION; 472 473 iwcm = kmalloc(sizeof(*iwcm), GFP_KERNEL); 474 if (iwcm == NULL) 475 return (-ENOMEM); 476 477 iwcm->connect = c4iw_connect; 478 iwcm->accept = c4iw_accept_cr; 479 iwcm->reject = c4iw_reject_cr; 480 iwcm->create_listen_ep = c4iw_create_listen_ep; 481 iwcm->destroy_listen_ep = c4iw_destroy_listen_ep; 482 iwcm->newconn = process_newconn; 483 iwcm->add_ref = c4iw_qp_add_ref; 484 iwcm->rem_ref = c4iw_qp_rem_ref; 485 iwcm->get_qp = c4iw_get_qp; 486 ibdev->iwcm = iwcm; 487 488 ret = ib_register_device(&dev->ibdev, NULL); 489 if (ret) 490 kfree(iwcm); 491 492 return (ret); 493} 494 495void 496c4iw_unregister_device(struct c4iw_dev *dev) 497{ 498 499 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, 500 dev->rdev.adap); 501 ib_unregister_device(&dev->ibdev); 502 kfree(dev->ibdev.iwcm); 503 return; 504} 505#endif 506