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 56 #include "iw_cxgb4.h" 57 58 static int fastreg_support = 1; 59 module_param(fastreg_support, int, 0644); 60 MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default=1)"); 61 62 static void c4iw_dealloc_ucontext(struct ib_ucontext *context) 63 { 64 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); 65 struct c4iw_dev *rhp; 66 struct c4iw_mm_entry *mm, *tmp; 67 68 pr_debug("context %p\n", context); 69 rhp = to_c4iw_dev(ucontext->ibucontext.device); 70 71 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) 72 kfree(mm); 73 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); 74 } 75 76 static int c4iw_alloc_ucontext(struct ib_ucontext *ucontext, 77 struct ib_udata *udata) 78 { 79 struct ib_device *ibdev = ucontext->device; 80 struct c4iw_ucontext *context = to_c4iw_ucontext(ucontext); 81 struct c4iw_dev *rhp = to_c4iw_dev(ibdev); 82 struct c4iw_alloc_ucontext_resp uresp; 83 int ret = 0; 84 struct c4iw_mm_entry *mm = NULL; 85 86 pr_debug("ibdev %p\n", ibdev); 87 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); 88 INIT_LIST_HEAD(&context->mmaps); 89 spin_lock_init(&context->mmap_lock); 90 91 if (udata->outlen < sizeof(uresp) - sizeof(uresp.reserved)) { 92 pr_err_once("Warning - downlevel libcxgb4 (non-fatal), device status page disabled\n"); 93 rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED; 94 } else { 95 mm = kmalloc(sizeof(*mm), GFP_KERNEL); 96 if (!mm) { 97 ret = -ENOMEM; 98 goto err; 99 } 100 101 uresp.status_page_size = PAGE_SIZE; 102 103 spin_lock(&context->mmap_lock); 104 uresp.status_page_key = context->key; 105 context->key += PAGE_SIZE; 106 spin_unlock(&context->mmap_lock); 107 108 ret = ib_copy_to_udata(udata, &uresp, 109 sizeof(uresp) - sizeof(uresp.reserved)); 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 insert_mmap(context, mm); 117 } 118 return 0; 119 err_mm: 120 kfree(mm); 121 err: 122 return ret; 123 } 124 125 static 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; 134 135 pr_debug("pgoff 0x%lx key 0x%x len %d\n", vma->vm_pgoff, 136 key, len); 137 138 if (vma->vm_start & (PAGE_SIZE-1)) 139 return -EINVAL; 140 141 rdev = &(to_c4iw_dev(context->device)->rdev); 142 ucontext = to_c4iw_ucontext(context); 143 144 mm = remove_mmap(ucontext, key, len); 145 if (!mm) 146 return -EINVAL; 147 addr = mm->addr; 148 kfree(mm); 149 150 if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) && 151 (addr < (pci_resource_start(rdev->lldi.pdev, 0) + 152 pci_resource_len(rdev->lldi.pdev, 0)))) { 153 154 /* 155 * MA_SYNC register... 156 */ 157 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 158 ret = io_remap_pfn_range(vma, vma->vm_start, 159 addr >> PAGE_SHIFT, 160 len, vma->vm_page_prot); 161 } else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) && 162 (addr < (pci_resource_start(rdev->lldi.pdev, 2) + 163 pci_resource_len(rdev->lldi.pdev, 2)))) { 164 165 /* 166 * Map user DB or OCQP memory... 167 */ 168 if (addr >= rdev->oc_mw_pa) 169 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot); 170 else { 171 if (!is_t4(rdev->lldi.adapter_type)) 172 vma->vm_page_prot = 173 t4_pgprot_wc(vma->vm_page_prot); 174 else 175 vma->vm_page_prot = 176 pgprot_noncached(vma->vm_page_prot); 177 } 178 ret = io_remap_pfn_range(vma, vma->vm_start, 179 addr >> PAGE_SHIFT, 180 len, vma->vm_page_prot); 181 } else { 182 183 /* 184 * Map WQ or CQ contig dma memory... 185 */ 186 ret = remap_pfn_range(vma, vma->vm_start, 187 addr >> PAGE_SHIFT, 188 len, vma->vm_page_prot); 189 } 190 191 return ret; 192 } 193 194 static int c4iw_deallocate_pd(struct ib_pd *pd, struct ib_udata *udata) 195 { 196 struct c4iw_dev *rhp; 197 struct c4iw_pd *php; 198 199 php = to_c4iw_pd(pd); 200 rhp = php->rhp; 201 pr_debug("ibpd %p pdid 0x%x\n", pd, php->pdid); 202 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid); 203 mutex_lock(&rhp->rdev.stats.lock); 204 rhp->rdev.stats.pd.cur--; 205 mutex_unlock(&rhp->rdev.stats.lock); 206 return 0; 207 } 208 209 static int c4iw_allocate_pd(struct ib_pd *pd, struct ib_udata *udata) 210 { 211 struct c4iw_pd *php = to_c4iw_pd(pd); 212 struct ib_device *ibdev = pd->device; 213 u32 pdid; 214 struct c4iw_dev *rhp; 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 if (ib_copy_to_udata(udata, &uresp, sizeof(uresp))) { 228 c4iw_deallocate_pd(&php->ibpd, udata); 229 return -EFAULT; 230 } 231 } 232 mutex_lock(&rhp->rdev.stats.lock); 233 rhp->rdev.stats.pd.cur++; 234 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max) 235 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur; 236 mutex_unlock(&rhp->rdev.stats.lock); 237 pr_debug("pdid 0x%0x ptr 0x%p\n", pdid, php); 238 return 0; 239 } 240 241 static int c4iw_query_gid(struct ib_device *ibdev, u32 port, int index, 242 union ib_gid *gid) 243 { 244 struct c4iw_dev *dev; 245 246 pr_debug("ibdev %p, port %u, index %d, gid %p\n", 247 ibdev, port, index, gid); 248 if (!port) 249 return -EINVAL; 250 dev = to_c4iw_dev(ibdev); 251 memset(&(gid->raw[0]), 0, sizeof(gid->raw)); 252 memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6); 253 return 0; 254 } 255 256 static int c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props, 257 struct ib_udata *uhw) 258 { 259 260 struct c4iw_dev *dev; 261 262 pr_debug("ibdev %p\n", ibdev); 263 264 if (uhw->inlen || uhw->outlen) 265 return -EINVAL; 266 267 dev = to_c4iw_dev(ibdev); 268 addrconf_addr_eui48((u8 *)&props->sys_image_guid, 269 dev->rdev.lldi.ports[0]->dev_addr); 270 props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type); 271 props->fw_ver = dev->rdev.lldi.fw_vers; 272 props->device_cap_flags = dev->device_cap_flags; 273 props->page_size_cap = T4_PAGESIZE_MASK; 274 props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor; 275 props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device; 276 props->max_mr_size = T4_MAX_MR_SIZE; 277 props->max_qp = dev->rdev.lldi.vr->qp.size / 2; 278 props->max_srq = dev->rdev.lldi.vr->srq.size; 279 props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth; 280 props->max_srq_wr = dev->rdev.hw_queue.t4_max_qp_depth; 281 props->max_send_sge = min(T4_MAX_SEND_SGE, T4_MAX_WRITE_SGE); 282 props->max_recv_sge = T4_MAX_RECV_SGE; 283 props->max_srq_sge = T4_MAX_RECV_SGE; 284 props->max_sge_rd = 1; 285 props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter; 286 props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp, 287 c4iw_max_read_depth); 288 props->max_qp_init_rd_atom = props->max_qp_rd_atom; 289 props->max_cq = dev->rdev.lldi.vr->qp.size; 290 props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth; 291 props->max_mr = c4iw_num_stags(&dev->rdev); 292 props->max_pd = T4_MAX_NUM_PD; 293 props->local_ca_ack_delay = 0; 294 props->max_fast_reg_page_list_len = 295 t4_max_fr_depth(dev->rdev.lldi.ulptx_memwrite_dsgl && use_dsgl); 296 297 return 0; 298 } 299 300 static int c4iw_query_port(struct ib_device *ibdev, u32 port, 301 struct ib_port_attr *props) 302 { 303 int ret = 0; 304 pr_debug("ibdev %p\n", ibdev); 305 ret = ib_get_eth_speed(ibdev, port, &props->active_speed, 306 &props->active_width); 307 308 props->port_cap_flags = 309 IB_PORT_CM_SUP | 310 IB_PORT_SNMP_TUNNEL_SUP | 311 IB_PORT_REINIT_SUP | 312 IB_PORT_DEVICE_MGMT_SUP | 313 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 314 props->gid_tbl_len = 1; 315 props->max_msg_sz = -1; 316 317 return ret; 318 } 319 320 static ssize_t hw_rev_show(struct device *dev, 321 struct device_attribute *attr, char *buf) 322 { 323 struct c4iw_dev *c4iw_dev = 324 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev); 325 326 pr_debug("dev 0x%p\n", dev); 327 return sysfs_emit( 328 buf, "%d\n", 329 CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type)); 330 } 331 static DEVICE_ATTR_RO(hw_rev); 332 333 static ssize_t hca_type_show(struct device *dev, 334 struct device_attribute *attr, char *buf) 335 { 336 struct c4iw_dev *c4iw_dev = 337 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev); 338 struct ethtool_drvinfo info; 339 struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0]; 340 341 pr_debug("dev 0x%p\n", dev); 342 lldev->ethtool_ops->get_drvinfo(lldev, &info); 343 return sysfs_emit(buf, "%s\n", info.driver); 344 } 345 static DEVICE_ATTR_RO(hca_type); 346 347 static ssize_t board_id_show(struct device *dev, struct device_attribute *attr, 348 char *buf) 349 { 350 struct c4iw_dev *c4iw_dev = 351 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev); 352 353 pr_debug("dev 0x%p\n", dev); 354 return sysfs_emit(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor, 355 c4iw_dev->rdev.lldi.pdev->device); 356 } 357 static DEVICE_ATTR_RO(board_id); 358 359 enum counters { 360 IP4INSEGS, 361 IP4OUTSEGS, 362 IP4RETRANSSEGS, 363 IP4OUTRSTS, 364 IP6INSEGS, 365 IP6OUTSEGS, 366 IP6RETRANSSEGS, 367 IP6OUTRSTS, 368 NR_COUNTERS 369 }; 370 371 static const struct rdma_stat_desc cxgb4_descs[] = { 372 [IP4INSEGS].name = "ip4InSegs", 373 [IP4OUTSEGS].name = "ip4OutSegs", 374 [IP4RETRANSSEGS].name = "ip4RetransSegs", 375 [IP4OUTRSTS].name = "ip4OutRsts", 376 [IP6INSEGS].name = "ip6InSegs", 377 [IP6OUTSEGS].name = "ip6OutSegs", 378 [IP6RETRANSSEGS].name = "ip6RetransSegs", 379 [IP6OUTRSTS].name = "ip6OutRsts" 380 }; 381 382 static struct rdma_hw_stats *c4iw_alloc_device_stats(struct ib_device *ibdev) 383 { 384 BUILD_BUG_ON(ARRAY_SIZE(cxgb4_descs) != NR_COUNTERS); 385 386 /* FIXME: these look like port stats */ 387 return rdma_alloc_hw_stats_struct(cxgb4_descs, NR_COUNTERS, 388 RDMA_HW_STATS_DEFAULT_LIFESPAN); 389 } 390 391 static int c4iw_get_mib(struct ib_device *ibdev, 392 struct rdma_hw_stats *stats, 393 u32 port, int index) 394 { 395 struct tp_tcp_stats v4, v6; 396 struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev); 397 398 cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6); 399 stats->value[IP4INSEGS] = v4.tcp_in_segs; 400 stats->value[IP4OUTSEGS] = v4.tcp_out_segs; 401 stats->value[IP4RETRANSSEGS] = v4.tcp_retrans_segs; 402 stats->value[IP4OUTRSTS] = v4.tcp_out_rsts; 403 stats->value[IP6INSEGS] = v6.tcp_in_segs; 404 stats->value[IP6OUTSEGS] = v6.tcp_out_segs; 405 stats->value[IP6RETRANSSEGS] = v6.tcp_retrans_segs; 406 stats->value[IP6OUTRSTS] = v6.tcp_out_rsts; 407 408 return stats->num_counters; 409 } 410 411 static struct attribute *c4iw_class_attributes[] = { 412 &dev_attr_hw_rev.attr, 413 &dev_attr_hca_type.attr, 414 &dev_attr_board_id.attr, 415 NULL 416 }; 417 418 static const struct attribute_group c4iw_attr_group = { 419 .attrs = c4iw_class_attributes, 420 }; 421 422 static int c4iw_port_immutable(struct ib_device *ibdev, u32 port_num, 423 struct ib_port_immutable *immutable) 424 { 425 struct ib_port_attr attr; 426 int err; 427 428 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP; 429 430 err = ib_query_port(ibdev, port_num, &attr); 431 if (err) 432 return err; 433 434 immutable->gid_tbl_len = attr.gid_tbl_len; 435 436 return 0; 437 } 438 439 static void get_dev_fw_str(struct ib_device *dev, char *str) 440 { 441 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 442 ibdev); 443 pr_debug("dev 0x%p\n", dev); 444 445 snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%u.%u", 446 FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers), 447 FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers), 448 FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers), 449 FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers)); 450 } 451 452 static const struct ib_device_ops c4iw_dev_ops = { 453 .owner = THIS_MODULE, 454 .driver_id = RDMA_DRIVER_CXGB4, 455 .uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION, 456 457 .alloc_hw_device_stats = c4iw_alloc_device_stats, 458 .alloc_mr = c4iw_alloc_mr, 459 .alloc_pd = c4iw_allocate_pd, 460 .alloc_ucontext = c4iw_alloc_ucontext, 461 .create_cq = c4iw_create_cq, 462 .create_qp = c4iw_create_qp, 463 .create_srq = c4iw_create_srq, 464 .dealloc_pd = c4iw_deallocate_pd, 465 .dealloc_ucontext = c4iw_dealloc_ucontext, 466 .dereg_mr = c4iw_dereg_mr, 467 .destroy_cq = c4iw_destroy_cq, 468 .destroy_qp = c4iw_destroy_qp, 469 .destroy_srq = c4iw_destroy_srq, 470 .device_group = &c4iw_attr_group, 471 .fill_res_cq_entry = c4iw_fill_res_cq_entry, 472 .fill_res_cm_id_entry = c4iw_fill_res_cm_id_entry, 473 .fill_res_mr_entry = c4iw_fill_res_mr_entry, 474 .get_dev_fw_str = get_dev_fw_str, 475 .get_dma_mr = c4iw_get_dma_mr, 476 .get_hw_stats = c4iw_get_mib, 477 .get_port_immutable = c4iw_port_immutable, 478 .iw_accept = c4iw_accept_cr, 479 .iw_add_ref = c4iw_qp_add_ref, 480 .iw_connect = c4iw_connect, 481 .iw_create_listen = c4iw_create_listen, 482 .iw_destroy_listen = c4iw_destroy_listen, 483 .iw_get_qp = c4iw_get_qp, 484 .iw_reject = c4iw_reject_cr, 485 .iw_rem_ref = c4iw_qp_rem_ref, 486 .map_mr_sg = c4iw_map_mr_sg, 487 .mmap = c4iw_mmap, 488 .modify_qp = c4iw_ib_modify_qp, 489 .modify_srq = c4iw_modify_srq, 490 .poll_cq = c4iw_poll_cq, 491 .post_recv = c4iw_post_receive, 492 .post_send = c4iw_post_send, 493 .post_srq_recv = c4iw_post_srq_recv, 494 .query_device = c4iw_query_device, 495 .query_gid = c4iw_query_gid, 496 .query_port = c4iw_query_port, 497 .query_qp = c4iw_ib_query_qp, 498 .reg_user_mr = c4iw_reg_user_mr, 499 .req_notify_cq = c4iw_arm_cq, 500 501 INIT_RDMA_OBJ_SIZE(ib_cq, c4iw_cq, ibcq), 502 INIT_RDMA_OBJ_SIZE(ib_mw, c4iw_mw, ibmw), 503 INIT_RDMA_OBJ_SIZE(ib_pd, c4iw_pd, ibpd), 504 INIT_RDMA_OBJ_SIZE(ib_qp, c4iw_qp, ibqp), 505 INIT_RDMA_OBJ_SIZE(ib_srq, c4iw_srq, ibsrq), 506 INIT_RDMA_OBJ_SIZE(ib_ucontext, c4iw_ucontext, ibucontext), 507 }; 508 509 static int set_netdevs(struct ib_device *ib_dev, struct c4iw_rdev *rdev) 510 { 511 int ret; 512 int i; 513 514 for (i = 0; i < rdev->lldi.nports; i++) { 515 ret = ib_device_set_netdev(ib_dev, rdev->lldi.ports[i], 516 i + 1); 517 if (ret) 518 return ret; 519 } 520 return 0; 521 } 522 523 void c4iw_register_device(struct work_struct *work) 524 { 525 int ret; 526 struct uld_ctx *ctx = container_of(work, struct uld_ctx, reg_work); 527 struct c4iw_dev *dev = ctx->dev; 528 529 pr_debug("c4iw_dev %p\n", dev); 530 addrconf_addr_eui48((u8 *)&dev->ibdev.node_guid, 531 dev->rdev.lldi.ports[0]->dev_addr); 532 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; 533 if (fastreg_support) 534 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 535 dev->ibdev.local_dma_lkey = 0; 536 dev->ibdev.node_type = RDMA_NODE_RNIC; 537 BUILD_BUG_ON(sizeof(C4IW_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX); 538 memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC)); 539 dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports; 540 dev->ibdev.num_comp_vectors = dev->rdev.lldi.nciq; 541 dev->ibdev.dev.parent = &dev->rdev.lldi.pdev->dev; 542 543 memcpy(dev->ibdev.iw_ifname, dev->rdev.lldi.ports[0]->name, 544 sizeof(dev->ibdev.iw_ifname)); 545 546 ib_set_device_ops(&dev->ibdev, &c4iw_dev_ops); 547 ret = set_netdevs(&dev->ibdev, &dev->rdev); 548 if (ret) 549 goto err_dealloc_ctx; 550 dma_set_max_seg_size(&dev->rdev.lldi.pdev->dev, UINT_MAX); 551 ret = ib_register_device(&dev->ibdev, "cxgb4_%d", 552 &dev->rdev.lldi.pdev->dev); 553 if (ret) 554 goto err_dealloc_ctx; 555 return; 556 557 err_dealloc_ctx: 558 pr_err("%s - Failed registering iwarp device: %d\n", 559 pci_name(ctx->lldi.pdev), ret); 560 c4iw_dealloc(ctx); 561 return; 562 } 563 564 void c4iw_unregister_device(struct c4iw_dev *dev) 565 { 566 pr_debug("c4iw_dev %p\n", dev); 567 ib_unregister_device(&dev->ibdev); 568 return; 569 } 570