1 /* 2 * Copyright (c) 2009-2010 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 <linux/module.h> 33 #include <linux/moduleparam.h> 34 #include <linux/device.h> 35 #include <linux/netdevice.h> 36 #include <linux/etherdevice.h> 37 #include <linux/delay.h> 38 #include <linux/errno.h> 39 #include <linux/list.h> 40 #include <linux/spinlock.h> 41 #include <linux/ethtool.h> 42 #include <linux/rtnetlink.h> 43 #include <linux/inetdevice.h> 44 #include <net/addrconf.h> 45 #include <linux/io.h> 46 47 #include <asm/irq.h> 48 #include <asm/byteorder.h> 49 50 #include <rdma/iw_cm.h> 51 #include <rdma/ib_verbs.h> 52 #include <rdma/ib_smi.h> 53 #include <rdma/ib_umem.h> 54 #include <rdma/ib_user_verbs.h> 55 #include <rdma/uverbs_ioctl.h> 56 57 #include "iw_cxgb4.h" 58 59 static int fastreg_support = 1; 60 module_param(fastreg_support, int, 0644); 61 MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default=1)"); 62 63 static void c4iw_dealloc_ucontext(struct ib_ucontext *context) 64 { 65 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); 66 struct c4iw_dev *rhp; 67 struct c4iw_mm_entry *mm, *tmp; 68 69 pr_debug("context %p\n", context); 70 rhp = to_c4iw_dev(ucontext->ibucontext.device); 71 72 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) 73 kfree(mm); 74 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); 75 } 76 77 static int c4iw_alloc_ucontext(struct ib_ucontext *ucontext, 78 struct ib_udata *udata) 79 { 80 struct ib_device *ibdev = ucontext->device; 81 struct c4iw_ucontext *context = to_c4iw_ucontext(ucontext); 82 struct c4iw_dev *rhp = to_c4iw_dev(ibdev); 83 struct c4iw_alloc_ucontext_resp uresp = {}; 84 int ret = 0; 85 struct c4iw_mm_entry *mm = NULL; 86 87 pr_debug("ibdev %p\n", ibdev); 88 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); 89 INIT_LIST_HEAD(&context->mmaps); 90 spin_lock_init(&context->mmap_lock); 91 92 if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) { 93 pr_err_once("Warning - downlevel libcxgb4 (non-fatal), device status page disabled\n"); 94 rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED; 95 } else { 96 mm = kmalloc_obj(*mm); 97 if (!mm) { 98 ret = -ENOMEM; 99 goto err; 100 } 101 102 uresp.status_page_size = PAGE_SIZE; 103 104 spin_lock(&context->mmap_lock); 105 uresp.status_page_key = context->key; 106 context->key += PAGE_SIZE; 107 spin_unlock(&context->mmap_lock); 108 109 ret = ib_respond_udata(udata, uresp); 110 if (ret) 111 goto err_mm; 112 113 mm->key = uresp.status_page_key; 114 mm->addr = virt_to_phys(rhp->rdev.status_page); 115 mm->len = PAGE_SIZE; 116 mm->vaddr = NULL; 117 mm->dma_addr = 0; 118 insert_flag_to_mmap(&rhp->rdev, mm, mm->addr); 119 insert_mmap(context, mm); 120 } 121 return 0; 122 err_mm: 123 kfree(mm); 124 err: 125 return ret; 126 } 127 128 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 129 { 130 int len = vma->vm_end - vma->vm_start; 131 u32 key = vma->vm_pgoff << PAGE_SHIFT; 132 struct c4iw_rdev *rdev; 133 int ret = 0; 134 struct c4iw_mm_entry *mm; 135 struct c4iw_ucontext *ucontext; 136 u64 addr; 137 u8 mmap_flag; 138 size_t size; 139 void *vaddr; 140 unsigned long vm_pgoff; 141 dma_addr_t dma_addr; 142 143 pr_debug("pgoff 0x%lx key 0x%x len %d\n", vma->vm_pgoff, 144 key, len); 145 146 if (vma->vm_start & (PAGE_SIZE-1)) 147 return -EINVAL; 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 return -EINVAL; 155 addr = mm->addr; 156 vaddr = mm->vaddr; 157 dma_addr = mm->dma_addr; 158 size = mm->len; 159 mmap_flag = mm->mmap_flag; 160 kfree(mm); 161 162 switch (mmap_flag) { 163 case CXGB4_MMAP_BAR: 164 ret = io_remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT, 165 len, 166 pgprot_noncached(vma->vm_page_prot)); 167 break; 168 case CXGB4_MMAP_BAR_WC: 169 ret = io_remap_pfn_range(vma, vma->vm_start, 170 addr >> PAGE_SHIFT, 171 len, t4_pgprot_wc(vma->vm_page_prot)); 172 break; 173 case CXGB4_MMAP_CONTIG: 174 ret = io_remap_pfn_range(vma, vma->vm_start, 175 addr >> PAGE_SHIFT, 176 len, vma->vm_page_prot); 177 break; 178 case CXGB4_MMAP_NON_CONTIG: 179 vm_pgoff = vma->vm_pgoff; 180 vma->vm_pgoff = 0; 181 ret = dma_mmap_coherent(&rdev->lldi.pdev->dev, vma, 182 vaddr, dma_addr, size); 183 vma->vm_pgoff = vm_pgoff; 184 break; 185 default: 186 ret = -EINVAL; 187 break; 188 } 189 190 return ret; 191 } 192 193 static int c4iw_deallocate_pd(struct ib_pd *pd, struct ib_udata *udata) 194 { 195 struct c4iw_dev *rhp; 196 struct c4iw_pd *php; 197 198 php = to_c4iw_pd(pd); 199 rhp = php->rhp; 200 pr_debug("ibpd %p pdid 0x%x\n", pd, php->pdid); 201 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid); 202 mutex_lock(&rhp->rdev.stats.lock); 203 rhp->rdev.stats.pd.cur--; 204 mutex_unlock(&rhp->rdev.stats.lock); 205 return 0; 206 } 207 208 static int c4iw_allocate_pd(struct ib_pd *pd, struct ib_udata *udata) 209 { 210 struct c4iw_pd *php = to_c4iw_pd(pd); 211 struct ib_device *ibdev = pd->device; 212 struct c4iw_dev *rhp; 213 u32 pdid; 214 int ret; 215 216 pr_debug("ibdev %p\n", ibdev); 217 rhp = (struct c4iw_dev *) ibdev; 218 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table); 219 if (!pdid) 220 return -EINVAL; 221 222 php->pdid = pdid; 223 php->rhp = rhp; 224 if (udata) { 225 struct c4iw_alloc_pd_resp uresp = {.pdid = php->pdid}; 226 227 ret = ib_respond_udata(udata, uresp); 228 if (ret) { 229 c4iw_deallocate_pd(&php->ibpd, udata); 230 return ret; 231 } 232 } 233 mutex_lock(&rhp->rdev.stats.lock); 234 rhp->rdev.stats.pd.cur++; 235 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max) 236 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur; 237 mutex_unlock(&rhp->rdev.stats.lock); 238 pr_debug("pdid 0x%0x ptr 0x%p\n", pdid, php); 239 return 0; 240 } 241 242 static int c4iw_query_gid(struct ib_device *ibdev, u32 port, int index, 243 union ib_gid *gid) 244 { 245 struct c4iw_dev *dev; 246 247 pr_debug("ibdev %p, port %u, index %d, gid %p\n", 248 ibdev, port, index, gid); 249 if (!port) 250 return -EINVAL; 251 dev = to_c4iw_dev(ibdev); 252 memset(&(gid->raw[0]), 0, sizeof(gid->raw)); 253 memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6); 254 return 0; 255 } 256 257 static int c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props, 258 struct ib_udata *uhw) 259 { 260 261 struct c4iw_dev *dev; 262 int err; 263 264 pr_debug("ibdev %p\n", ibdev); 265 266 err = ib_is_udata_in_empty(uhw); 267 if (err) 268 return err; 269 270 dev = to_c4iw_dev(ibdev); 271 addrconf_addr_eui48((u8 *)&props->sys_image_guid, 272 dev->rdev.lldi.ports[0]->dev_addr); 273 props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type); 274 props->fw_ver = dev->rdev.lldi.fw_vers; 275 props->device_cap_flags = IB_DEVICE_MEM_WINDOW; 276 props->kernel_cap_flags = IBK_LOCAL_DMA_LKEY; 277 if (fastreg_support) 278 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 279 props->page_size_cap = T4_PAGESIZE_MASK; 280 props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor; 281 props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device; 282 props->max_mr_size = T4_MAX_MR_SIZE; 283 props->max_qp = dev->rdev.lldi.vr->qp.size / 2; 284 props->max_srq = dev->rdev.lldi.vr->srq.size; 285 props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth; 286 props->max_srq_wr = dev->rdev.hw_queue.t4_max_qp_depth; 287 props->max_send_sge = min(T4_MAX_SEND_SGE, T4_MAX_WRITE_SGE); 288 props->max_recv_sge = T4_MAX_RECV_SGE; 289 props->max_srq_sge = T4_MAX_RECV_SGE; 290 props->max_sge_rd = 1; 291 props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter; 292 props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp, 293 c4iw_max_read_depth); 294 props->max_qp_init_rd_atom = props->max_qp_rd_atom; 295 props->max_cq = dev->rdev.lldi.vr->qp.size; 296 props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth; 297 props->max_mr = c4iw_num_stags(&dev->rdev); 298 props->max_pd = T4_MAX_NUM_PD; 299 props->local_ca_ack_delay = 0; 300 props->max_fast_reg_page_list_len = 301 t4_max_fr_depth(dev->rdev.lldi.ulptx_memwrite_dsgl && use_dsgl); 302 303 return ib_respond_empty_udata(uhw); 304 } 305 306 static int c4iw_query_port(struct ib_device *ibdev, u32 port, 307 struct ib_port_attr *props) 308 { 309 int ret = 0; 310 pr_debug("ibdev %p\n", ibdev); 311 ret = ib_get_eth_speed(ibdev, port, &props->active_speed, 312 &props->active_width); 313 314 props->port_cap_flags = 315 IB_PORT_CM_SUP | 316 IB_PORT_SNMP_TUNNEL_SUP | 317 IB_PORT_REINIT_SUP | 318 IB_PORT_DEVICE_MGMT_SUP | 319 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 320 props->gid_tbl_len = 1; 321 props->max_msg_sz = -1; 322 323 return ret; 324 } 325 326 static ssize_t hw_rev_show(struct device *dev, 327 struct device_attribute *attr, char *buf) 328 { 329 struct c4iw_dev *c4iw_dev = 330 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev); 331 332 pr_debug("dev 0x%p\n", dev); 333 return sysfs_emit( 334 buf, "%d\n", 335 CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type)); 336 } 337 static DEVICE_ATTR_RO(hw_rev); 338 339 static ssize_t hca_type_show(struct device *dev, 340 struct device_attribute *attr, char *buf) 341 { 342 struct c4iw_dev *c4iw_dev = 343 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev); 344 struct ethtool_drvinfo info; 345 struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0]; 346 347 pr_debug("dev 0x%p\n", dev); 348 lldev->ethtool_ops->get_drvinfo(lldev, &info); 349 return sysfs_emit(buf, "%s\n", info.driver); 350 } 351 static DEVICE_ATTR_RO(hca_type); 352 353 static ssize_t board_id_show(struct device *dev, struct device_attribute *attr, 354 char *buf) 355 { 356 struct c4iw_dev *c4iw_dev = 357 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev); 358 359 pr_debug("dev 0x%p\n", dev); 360 return sysfs_emit(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor, 361 c4iw_dev->rdev.lldi.pdev->device); 362 } 363 static DEVICE_ATTR_RO(board_id); 364 365 enum counters { 366 IP4INSEGS, 367 IP4OUTSEGS, 368 IP4RETRANSSEGS, 369 IP4OUTRSTS, 370 IP6INSEGS, 371 IP6OUTSEGS, 372 IP6RETRANSSEGS, 373 IP6OUTRSTS, 374 NR_COUNTERS 375 }; 376 377 static const struct rdma_stat_desc cxgb4_descs[] = { 378 [IP4INSEGS].name = "ip4InSegs", 379 [IP4OUTSEGS].name = "ip4OutSegs", 380 [IP4RETRANSSEGS].name = "ip4RetransSegs", 381 [IP4OUTRSTS].name = "ip4OutRsts", 382 [IP6INSEGS].name = "ip6InSegs", 383 [IP6OUTSEGS].name = "ip6OutSegs", 384 [IP6RETRANSSEGS].name = "ip6RetransSegs", 385 [IP6OUTRSTS].name = "ip6OutRsts" 386 }; 387 388 static struct rdma_hw_stats *c4iw_alloc_device_stats(struct ib_device *ibdev) 389 { 390 BUILD_BUG_ON(ARRAY_SIZE(cxgb4_descs) != NR_COUNTERS); 391 392 /* FIXME: these look like port stats */ 393 return rdma_alloc_hw_stats_struct(cxgb4_descs, NR_COUNTERS, 394 RDMA_HW_STATS_DEFAULT_LIFESPAN); 395 } 396 397 static int c4iw_get_mib(struct ib_device *ibdev, 398 struct rdma_hw_stats *stats, 399 u32 port, int index) 400 { 401 struct tp_tcp_stats v4, v6; 402 struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev); 403 404 cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6); 405 stats->value[IP4INSEGS] = v4.tcp_in_segs; 406 stats->value[IP4OUTSEGS] = v4.tcp_out_segs; 407 stats->value[IP4RETRANSSEGS] = v4.tcp_retrans_segs; 408 stats->value[IP4OUTRSTS] = v4.tcp_out_rsts; 409 stats->value[IP6INSEGS] = v6.tcp_in_segs; 410 stats->value[IP6OUTSEGS] = v6.tcp_out_segs; 411 stats->value[IP6RETRANSSEGS] = v6.tcp_retrans_segs; 412 stats->value[IP6OUTRSTS] = v6.tcp_out_rsts; 413 414 return stats->num_counters; 415 } 416 417 static struct attribute *c4iw_class_attributes[] = { 418 &dev_attr_hw_rev.attr, 419 &dev_attr_hca_type.attr, 420 &dev_attr_board_id.attr, 421 NULL 422 }; 423 424 static const struct attribute_group c4iw_attr_group = { 425 .attrs = c4iw_class_attributes, 426 }; 427 428 static int c4iw_port_immutable(struct ib_device *ibdev, u32 port_num, 429 struct ib_port_immutable *immutable) 430 { 431 struct ib_port_attr attr; 432 int err; 433 434 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP; 435 436 err = ib_query_port(ibdev, port_num, &attr); 437 if (err) 438 return err; 439 440 immutable->gid_tbl_len = attr.gid_tbl_len; 441 442 return 0; 443 } 444 445 static void get_dev_fw_str(struct ib_device *dev, char *str) 446 { 447 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 448 ibdev); 449 pr_debug("dev 0x%p\n", dev); 450 451 snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%u.%u", 452 FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers), 453 FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers), 454 FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers), 455 FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers)); 456 } 457 458 static const struct ib_device_ops c4iw_dev_ops = { 459 .owner = THIS_MODULE, 460 .driver_id = RDMA_DRIVER_CXGB4, 461 .uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION, 462 463 .alloc_hw_device_stats = c4iw_alloc_device_stats, 464 .alloc_mr = c4iw_alloc_mr, 465 .alloc_pd = c4iw_allocate_pd, 466 .alloc_ucontext = c4iw_alloc_ucontext, 467 .create_cq = c4iw_create_cq, 468 .create_qp = c4iw_create_qp, 469 .create_srq = c4iw_create_srq, 470 .dealloc_pd = c4iw_deallocate_pd, 471 .dealloc_ucontext = c4iw_dealloc_ucontext, 472 .dereg_mr = c4iw_dereg_mr, 473 .destroy_cq = c4iw_destroy_cq, 474 .destroy_qp = c4iw_destroy_qp, 475 .destroy_srq = c4iw_destroy_srq, 476 .device_group = &c4iw_attr_group, 477 .fill_res_cq_entry = c4iw_fill_res_cq_entry, 478 .fill_res_cm_id_entry = c4iw_fill_res_cm_id_entry, 479 .fill_res_mr_entry = c4iw_fill_res_mr_entry, 480 .fill_res_qp_entry = c4iw_fill_res_qp_entry, 481 .get_dev_fw_str = get_dev_fw_str, 482 .get_dma_mr = c4iw_get_dma_mr, 483 .get_hw_stats = c4iw_get_mib, 484 .get_port_immutable = c4iw_port_immutable, 485 .iw_accept = c4iw_accept_cr, 486 .iw_add_ref = c4iw_qp_add_ref, 487 .iw_connect = c4iw_connect, 488 .iw_create_listen = c4iw_create_listen, 489 .iw_destroy_listen = c4iw_destroy_listen, 490 .iw_get_qp = c4iw_get_qp, 491 .iw_reject = c4iw_reject_cr, 492 .iw_rem_ref = c4iw_qp_rem_ref, 493 .map_mr_sg = c4iw_map_mr_sg, 494 .mmap = c4iw_mmap, 495 .modify_qp = c4iw_ib_modify_qp, 496 .modify_srq = c4iw_modify_srq, 497 .poll_cq = c4iw_poll_cq, 498 .post_recv = c4iw_post_receive, 499 .post_send = c4iw_post_send, 500 .post_srq_recv = c4iw_post_srq_recv, 501 .query_device = c4iw_query_device, 502 .query_gid = c4iw_query_gid, 503 .query_port = c4iw_query_port, 504 .query_qp = c4iw_ib_query_qp, 505 .reg_user_mr = c4iw_reg_user_mr, 506 .req_notify_cq = c4iw_arm_cq, 507 508 INIT_RDMA_OBJ_SIZE(ib_cq, c4iw_cq, ibcq), 509 INIT_RDMA_OBJ_SIZE(ib_mw, c4iw_mw, ibmw), 510 INIT_RDMA_OBJ_SIZE(ib_pd, c4iw_pd, ibpd), 511 INIT_RDMA_OBJ_SIZE(ib_qp, c4iw_qp, ibqp), 512 INIT_RDMA_OBJ_SIZE(ib_srq, c4iw_srq, ibsrq), 513 INIT_RDMA_OBJ_SIZE(ib_ucontext, c4iw_ucontext, ibucontext), 514 }; 515 516 static int set_netdevs(struct ib_device *ib_dev, struct c4iw_rdev *rdev) 517 { 518 int ret; 519 int i; 520 521 for (i = 0; i < rdev->lldi.nports; i++) { 522 ret = ib_device_set_netdev(ib_dev, rdev->lldi.ports[i], 523 i + 1); 524 if (ret) 525 return ret; 526 } 527 return 0; 528 } 529 530 void c4iw_register_device(struct work_struct *work) 531 { 532 int ret; 533 struct uld_ctx *ctx = container_of(work, struct uld_ctx, reg_work); 534 struct c4iw_dev *dev = ctx->dev; 535 536 pr_debug("c4iw_dev %p\n", dev); 537 addrconf_addr_eui48((u8 *)&dev->ibdev.node_guid, 538 dev->rdev.lldi.ports[0]->dev_addr); 539 dev->ibdev.local_dma_lkey = 0; 540 dev->ibdev.node_type = RDMA_NODE_RNIC; 541 BUILD_BUG_ON(sizeof(C4IW_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX); 542 memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC)); 543 dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports; 544 dev->ibdev.num_comp_vectors = dev->rdev.lldi.nciq; 545 dev->ibdev.dev.parent = &dev->rdev.lldi.pdev->dev; 546 547 memcpy(dev->ibdev.iw_ifname, dev->rdev.lldi.ports[0]->name, 548 sizeof(dev->ibdev.iw_ifname)); 549 550 ib_set_device_ops(&dev->ibdev, &c4iw_dev_ops); 551 ret = set_netdevs(&dev->ibdev, &dev->rdev); 552 if (ret) 553 goto err_dealloc_ctx; 554 dma_set_max_seg_size(&dev->rdev.lldi.pdev->dev, UINT_MAX); 555 ret = ib_register_device(&dev->ibdev, "cxgb4_%d", 556 &dev->rdev.lldi.pdev->dev); 557 if (ret) 558 goto err_dealloc_ctx; 559 return; 560 561 err_dealloc_ctx: 562 pr_err("%s - Failed registering iwarp device: %d\n", 563 pci_name(ctx->lldi.pdev), ret); 564 c4iw_dealloc(ctx); 565 return; 566 } 567 568 void c4iw_unregister_device(struct c4iw_dev *dev) 569 { 570 pr_debug("c4iw_dev %p\n", dev); 571 ib_unregister_device(&dev->ibdev); 572 return; 573 } 574