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 <linux/io.h> 45 46 #include <asm/irq.h> 47 #include <asm/byteorder.h> 48 49 #include <rdma/iw_cm.h> 50 #include <rdma/ib_verbs.h> 51 #include <rdma/ib_smi.h> 52 #include <rdma/ib_umem.h> 53 #include <rdma/ib_user_verbs.h> 54 55 #include "iw_cxgb4.h" 56 57 static int fastreg_support = 1; 58 module_param(fastreg_support, int, 0644); 59 MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default=1)"); 60 61 static struct ib_ah *c4iw_ah_create(struct ib_pd *pd, 62 struct ib_ah_attr *ah_attr) 63 { 64 return ERR_PTR(-ENOSYS); 65 } 66 67 static int c4iw_ah_destroy(struct ib_ah *ah) 68 { 69 return -ENOSYS; 70 } 71 72 static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 73 { 74 return -ENOSYS; 75 } 76 77 static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 78 { 79 return -ENOSYS; 80 } 81 82 static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags, 83 u8 port_num, struct ib_wc *in_wc, 84 struct ib_grh *in_grh, struct ib_mad *in_mad, 85 struct ib_mad *out_mad) 86 { 87 return -ENOSYS; 88 } 89 90 static int c4iw_dealloc_ucontext(struct ib_ucontext *context) 91 { 92 struct c4iw_dev *rhp = to_c4iw_dev(context->device); 93 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); 94 struct c4iw_mm_entry *mm, *tmp; 95 96 PDBG("%s context %p\n", __func__, context); 97 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) 98 kfree(mm); 99 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); 100 kfree(ucontext); 101 return 0; 102 } 103 104 static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev, 105 struct ib_udata *udata) 106 { 107 struct c4iw_ucontext *context; 108 struct c4iw_dev *rhp = to_c4iw_dev(ibdev); 109 static int warned; 110 struct c4iw_alloc_ucontext_resp uresp; 111 int ret = 0; 112 struct c4iw_mm_entry *mm = NULL; 113 114 PDBG("%s ibdev %p\n", __func__, ibdev); 115 context = kzalloc(sizeof(*context), GFP_KERNEL); 116 if (!context) { 117 ret = -ENOMEM; 118 goto err; 119 } 120 121 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); 122 INIT_LIST_HEAD(&context->mmaps); 123 spin_lock_init(&context->mmap_lock); 124 125 if (udata->outlen < sizeof(uresp)) { 126 if (!warned++) 127 pr_err(MOD "Warning - downlevel libcxgb4 (non-fatal), device status page disabled."); 128 rhp->rdev.flags |= T4_STATUS_PAGE_DISABLED; 129 } else { 130 mm = kmalloc(sizeof(*mm), GFP_KERNEL); 131 if (!mm) { 132 ret = -ENOMEM; 133 goto err_free; 134 } 135 136 uresp.status_page_size = PAGE_SIZE; 137 138 spin_lock(&context->mmap_lock); 139 uresp.status_page_key = context->key; 140 context->key += PAGE_SIZE; 141 spin_unlock(&context->mmap_lock); 142 143 ret = ib_copy_to_udata(udata, &uresp, sizeof(uresp)); 144 if (ret) 145 goto err_mm; 146 147 mm->key = uresp.status_page_key; 148 mm->addr = virt_to_phys(rhp->rdev.status_page); 149 mm->len = PAGE_SIZE; 150 insert_mmap(context, mm); 151 } 152 return &context->ibucontext; 153 err_mm: 154 kfree(mm); 155 err_free: 156 kfree(context); 157 err: 158 return ERR_PTR(ret); 159 } 160 161 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 162 { 163 int len = vma->vm_end - vma->vm_start; 164 u32 key = vma->vm_pgoff << PAGE_SHIFT; 165 struct c4iw_rdev *rdev; 166 int ret = 0; 167 struct c4iw_mm_entry *mm; 168 struct c4iw_ucontext *ucontext; 169 u64 addr; 170 171 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff, 172 key, len); 173 174 if (vma->vm_start & (PAGE_SIZE-1)) 175 return -EINVAL; 176 177 rdev = &(to_c4iw_dev(context->device)->rdev); 178 ucontext = to_c4iw_ucontext(context); 179 180 mm = remove_mmap(ucontext, key, len); 181 if (!mm) 182 return -EINVAL; 183 addr = mm->addr; 184 kfree(mm); 185 186 if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) && 187 (addr < (pci_resource_start(rdev->lldi.pdev, 0) + 188 pci_resource_len(rdev->lldi.pdev, 0)))) { 189 190 /* 191 * MA_SYNC register... 192 */ 193 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 194 ret = io_remap_pfn_range(vma, vma->vm_start, 195 addr >> PAGE_SHIFT, 196 len, vma->vm_page_prot); 197 } else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) && 198 (addr < (pci_resource_start(rdev->lldi.pdev, 2) + 199 pci_resource_len(rdev->lldi.pdev, 2)))) { 200 201 /* 202 * Map user DB or OCQP memory... 203 */ 204 if (addr >= rdev->oc_mw_pa) 205 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot); 206 else { 207 if (is_t5(rdev->lldi.adapter_type)) 208 vma->vm_page_prot = 209 t4_pgprot_wc(vma->vm_page_prot); 210 else 211 vma->vm_page_prot = 212 pgprot_noncached(vma->vm_page_prot); 213 } 214 ret = io_remap_pfn_range(vma, vma->vm_start, 215 addr >> PAGE_SHIFT, 216 len, vma->vm_page_prot); 217 } else { 218 219 /* 220 * Map WQ or CQ contig dma memory... 221 */ 222 ret = remap_pfn_range(vma, vma->vm_start, 223 addr >> PAGE_SHIFT, 224 len, vma->vm_page_prot); 225 } 226 227 return ret; 228 } 229 230 static int c4iw_deallocate_pd(struct ib_pd *pd) 231 { 232 struct c4iw_dev *rhp; 233 struct c4iw_pd *php; 234 235 php = to_c4iw_pd(pd); 236 rhp = php->rhp; 237 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid); 238 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid); 239 mutex_lock(&rhp->rdev.stats.lock); 240 rhp->rdev.stats.pd.cur--; 241 mutex_unlock(&rhp->rdev.stats.lock); 242 kfree(php); 243 return 0; 244 } 245 246 static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev, 247 struct ib_ucontext *context, 248 struct ib_udata *udata) 249 { 250 struct c4iw_pd *php; 251 u32 pdid; 252 struct c4iw_dev *rhp; 253 254 PDBG("%s ibdev %p\n", __func__, ibdev); 255 rhp = (struct c4iw_dev *) ibdev; 256 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table); 257 if (!pdid) 258 return ERR_PTR(-EINVAL); 259 php = kzalloc(sizeof(*php), GFP_KERNEL); 260 if (!php) { 261 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid); 262 return ERR_PTR(-ENOMEM); 263 } 264 php->pdid = pdid; 265 php->rhp = rhp; 266 if (context) { 267 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) { 268 c4iw_deallocate_pd(&php->ibpd); 269 return ERR_PTR(-EFAULT); 270 } 271 } 272 mutex_lock(&rhp->rdev.stats.lock); 273 rhp->rdev.stats.pd.cur++; 274 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max) 275 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur; 276 mutex_unlock(&rhp->rdev.stats.lock); 277 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php); 278 return &php->ibpd; 279 } 280 281 static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 282 u16 *pkey) 283 { 284 PDBG("%s ibdev %p\n", __func__, ibdev); 285 *pkey = 0; 286 return 0; 287 } 288 289 static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, 290 union ib_gid *gid) 291 { 292 struct c4iw_dev *dev; 293 294 PDBG("%s ibdev %p, port %d, index %d, gid %p\n", 295 __func__, ibdev, port, index, gid); 296 dev = to_c4iw_dev(ibdev); 297 BUG_ON(port == 0); 298 memset(&(gid->raw[0]), 0, sizeof(gid->raw)); 299 memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6); 300 return 0; 301 } 302 303 static int c4iw_query_device(struct ib_device *ibdev, 304 struct ib_device_attr *props) 305 { 306 307 struct c4iw_dev *dev; 308 PDBG("%s ibdev %p\n", __func__, ibdev); 309 310 dev = to_c4iw_dev(ibdev); 311 memset(props, 0, sizeof *props); 312 memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6); 313 props->hw_ver = CHELSIO_CHIP_RELEASE(dev->rdev.lldi.adapter_type); 314 props->fw_ver = dev->rdev.lldi.fw_vers; 315 props->device_cap_flags = dev->device_cap_flags; 316 props->page_size_cap = T4_PAGESIZE_MASK; 317 props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor; 318 props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device; 319 props->max_mr_size = T4_MAX_MR_SIZE; 320 props->max_qp = T4_MAX_NUM_QP; 321 props->max_qp_wr = T4_MAX_QP_DEPTH; 322 props->max_sge = T4_MAX_RECV_SGE; 323 props->max_sge_rd = 1; 324 props->max_qp_rd_atom = c4iw_max_read_depth; 325 props->max_qp_init_rd_atom = c4iw_max_read_depth; 326 props->max_cq = T4_MAX_NUM_CQ; 327 props->max_cqe = T4_MAX_CQ_DEPTH; 328 props->max_mr = c4iw_num_stags(&dev->rdev); 329 props->max_pd = T4_MAX_NUM_PD; 330 props->local_ca_ack_delay = 0; 331 props->max_fast_reg_page_list_len = t4_max_fr_depth(use_dsgl); 332 333 return 0; 334 } 335 336 static int c4iw_query_port(struct ib_device *ibdev, u8 port, 337 struct ib_port_attr *props) 338 { 339 struct c4iw_dev *dev; 340 struct net_device *netdev; 341 struct in_device *inetdev; 342 343 PDBG("%s ibdev %p\n", __func__, ibdev); 344 345 dev = to_c4iw_dev(ibdev); 346 netdev = dev->rdev.lldi.ports[port-1]; 347 348 memset(props, 0, sizeof(struct ib_port_attr)); 349 props->max_mtu = IB_MTU_4096; 350 if (netdev->mtu >= 4096) 351 props->active_mtu = IB_MTU_4096; 352 else if (netdev->mtu >= 2048) 353 props->active_mtu = IB_MTU_2048; 354 else if (netdev->mtu >= 1024) 355 props->active_mtu = IB_MTU_1024; 356 else if (netdev->mtu >= 512) 357 props->active_mtu = IB_MTU_512; 358 else 359 props->active_mtu = IB_MTU_256; 360 361 if (!netif_carrier_ok(netdev)) 362 props->state = IB_PORT_DOWN; 363 else { 364 inetdev = in_dev_get(netdev); 365 if (inetdev) { 366 if (inetdev->ifa_list) 367 props->state = IB_PORT_ACTIVE; 368 else 369 props->state = IB_PORT_INIT; 370 in_dev_put(inetdev); 371 } else 372 props->state = IB_PORT_INIT; 373 } 374 375 props->port_cap_flags = 376 IB_PORT_CM_SUP | 377 IB_PORT_SNMP_TUNNEL_SUP | 378 IB_PORT_REINIT_SUP | 379 IB_PORT_DEVICE_MGMT_SUP | 380 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 381 props->gid_tbl_len = 1; 382 props->pkey_tbl_len = 1; 383 props->active_width = 2; 384 props->active_speed = IB_SPEED_DDR; 385 props->max_msg_sz = -1; 386 387 return 0; 388 } 389 390 static ssize_t show_rev(struct device *dev, struct device_attribute *attr, 391 char *buf) 392 { 393 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 394 ibdev.dev); 395 PDBG("%s dev 0x%p\n", __func__, dev); 396 return sprintf(buf, "%d\n", 397 CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type)); 398 } 399 400 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, 401 char *buf) 402 { 403 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 404 ibdev.dev); 405 PDBG("%s dev 0x%p\n", __func__, dev); 406 407 return sprintf(buf, "%u.%u.%u.%u\n", 408 FW_HDR_FW_VER_MAJOR_GET(c4iw_dev->rdev.lldi.fw_vers), 409 FW_HDR_FW_VER_MINOR_GET(c4iw_dev->rdev.lldi.fw_vers), 410 FW_HDR_FW_VER_MICRO_GET(c4iw_dev->rdev.lldi.fw_vers), 411 FW_HDR_FW_VER_BUILD_GET(c4iw_dev->rdev.lldi.fw_vers)); 412 } 413 414 static ssize_t show_hca(struct device *dev, struct device_attribute *attr, 415 char *buf) 416 { 417 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 418 ibdev.dev); 419 struct ethtool_drvinfo info; 420 struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0]; 421 422 PDBG("%s dev 0x%p\n", __func__, dev); 423 lldev->ethtool_ops->get_drvinfo(lldev, &info); 424 return sprintf(buf, "%s\n", info.driver); 425 } 426 427 static ssize_t show_board(struct device *dev, struct device_attribute *attr, 428 char *buf) 429 { 430 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 431 ibdev.dev); 432 PDBG("%s dev 0x%p\n", __func__, dev); 433 return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor, 434 c4iw_dev->rdev.lldi.pdev->device); 435 } 436 437 static int c4iw_get_mib(struct ib_device *ibdev, 438 union rdma_protocol_stats *stats) 439 { 440 struct tp_tcp_stats v4, v6; 441 struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev); 442 443 cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6); 444 memset(stats, 0, sizeof *stats); 445 stats->iw.tcpInSegs = v4.tcpInSegs + v6.tcpInSegs; 446 stats->iw.tcpOutSegs = v4.tcpOutSegs + v6.tcpOutSegs; 447 stats->iw.tcpRetransSegs = v4.tcpRetransSegs + v6.tcpRetransSegs; 448 stats->iw.tcpOutRsts = v4.tcpOutRsts + v6.tcpOutSegs; 449 450 return 0; 451 } 452 453 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 454 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 455 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 456 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 457 458 static struct device_attribute *c4iw_class_attributes[] = { 459 &dev_attr_hw_rev, 460 &dev_attr_fw_ver, 461 &dev_attr_hca_type, 462 &dev_attr_board_id, 463 }; 464 465 int c4iw_register_device(struct c4iw_dev *dev) 466 { 467 int ret; 468 int i; 469 470 PDBG("%s c4iw_dev %p\n", __func__, dev); 471 BUG_ON(!dev->rdev.lldi.ports[0]); 472 strlcpy(dev->ibdev.name, "cxgb4_%d", IB_DEVICE_NAME_MAX); 473 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); 474 memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6); 475 dev->ibdev.owner = THIS_MODULE; 476 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; 477 if (fastreg_support) 478 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 479 dev->ibdev.local_dma_lkey = 0; 480 dev->ibdev.uverbs_cmd_mask = 481 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 482 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 483 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 484 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 485 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 486 (1ull << IB_USER_VERBS_CMD_REG_MR) | 487 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 488 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 489 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 490 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 491 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 492 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 493 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 494 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 495 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 496 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 497 (1ull << IB_USER_VERBS_CMD_POST_SEND) | 498 (1ull << IB_USER_VERBS_CMD_POST_RECV); 499 dev->ibdev.node_type = RDMA_NODE_RNIC; 500 memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC)); 501 dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports; 502 dev->ibdev.num_comp_vectors = 1; 503 dev->ibdev.dma_device = &(dev->rdev.lldi.pdev->dev); 504 dev->ibdev.query_device = c4iw_query_device; 505 dev->ibdev.query_port = c4iw_query_port; 506 dev->ibdev.query_pkey = c4iw_query_pkey; 507 dev->ibdev.query_gid = c4iw_query_gid; 508 dev->ibdev.alloc_ucontext = c4iw_alloc_ucontext; 509 dev->ibdev.dealloc_ucontext = c4iw_dealloc_ucontext; 510 dev->ibdev.mmap = c4iw_mmap; 511 dev->ibdev.alloc_pd = c4iw_allocate_pd; 512 dev->ibdev.dealloc_pd = c4iw_deallocate_pd; 513 dev->ibdev.create_ah = c4iw_ah_create; 514 dev->ibdev.destroy_ah = c4iw_ah_destroy; 515 dev->ibdev.create_qp = c4iw_create_qp; 516 dev->ibdev.modify_qp = c4iw_ib_modify_qp; 517 dev->ibdev.query_qp = c4iw_ib_query_qp; 518 dev->ibdev.destroy_qp = c4iw_destroy_qp; 519 dev->ibdev.create_cq = c4iw_create_cq; 520 dev->ibdev.destroy_cq = c4iw_destroy_cq; 521 dev->ibdev.resize_cq = c4iw_resize_cq; 522 dev->ibdev.poll_cq = c4iw_poll_cq; 523 dev->ibdev.get_dma_mr = c4iw_get_dma_mr; 524 dev->ibdev.reg_phys_mr = c4iw_register_phys_mem; 525 dev->ibdev.rereg_phys_mr = c4iw_reregister_phys_mem; 526 dev->ibdev.reg_user_mr = c4iw_reg_user_mr; 527 dev->ibdev.dereg_mr = c4iw_dereg_mr; 528 dev->ibdev.alloc_mw = c4iw_alloc_mw; 529 dev->ibdev.bind_mw = c4iw_bind_mw; 530 dev->ibdev.dealloc_mw = c4iw_dealloc_mw; 531 dev->ibdev.alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr; 532 dev->ibdev.alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl; 533 dev->ibdev.free_fast_reg_page_list = c4iw_free_fastreg_pbl; 534 dev->ibdev.attach_mcast = c4iw_multicast_attach; 535 dev->ibdev.detach_mcast = c4iw_multicast_detach; 536 dev->ibdev.process_mad = c4iw_process_mad; 537 dev->ibdev.req_notify_cq = c4iw_arm_cq; 538 dev->ibdev.post_send = c4iw_post_send; 539 dev->ibdev.post_recv = c4iw_post_receive; 540 dev->ibdev.get_protocol_stats = c4iw_get_mib; 541 dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION; 542 543 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL); 544 if (!dev->ibdev.iwcm) 545 return -ENOMEM; 546 547 dev->ibdev.iwcm->connect = c4iw_connect; 548 dev->ibdev.iwcm->accept = c4iw_accept_cr; 549 dev->ibdev.iwcm->reject = c4iw_reject_cr; 550 dev->ibdev.iwcm->create_listen = c4iw_create_listen; 551 dev->ibdev.iwcm->destroy_listen = c4iw_destroy_listen; 552 dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref; 553 dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref; 554 dev->ibdev.iwcm->get_qp = c4iw_get_qp; 555 556 ret = ib_register_device(&dev->ibdev, NULL); 557 if (ret) 558 goto bail1; 559 560 for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) { 561 ret = device_create_file(&dev->ibdev.dev, 562 c4iw_class_attributes[i]); 563 if (ret) 564 goto bail2; 565 } 566 return 0; 567 bail2: 568 ib_unregister_device(&dev->ibdev); 569 bail1: 570 kfree(dev->ibdev.iwcm); 571 return ret; 572 } 573 574 void c4iw_unregister_device(struct c4iw_dev *dev) 575 { 576 int i; 577 578 PDBG("%s c4iw_dev %p\n", __func__, dev); 579 for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) 580 device_remove_file(&dev->ibdev.dev, 581 c4iw_class_attributes[i]); 582 ib_unregister_device(&dev->ibdev); 583 kfree(dev->ibdev.iwcm); 584 return; 585 } 586