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 int c4iw_modify_port(struct ib_device *ibdev, 62 u8 port, int port_modify_mask, 63 struct ib_port_modify *props) 64 { 65 return -ENOSYS; 66 } 67 68 static struct ib_ah *c4iw_ah_create(struct ib_pd *pd, 69 struct ib_ah_attr *ah_attr) 70 { 71 return ERR_PTR(-ENOSYS); 72 } 73 74 static int c4iw_ah_destroy(struct ib_ah *ah) 75 { 76 return -ENOSYS; 77 } 78 79 static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 80 { 81 return -ENOSYS; 82 } 83 84 static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 85 { 86 return -ENOSYS; 87 } 88 89 static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags, 90 u8 port_num, struct ib_wc *in_wc, 91 struct ib_grh *in_grh, struct ib_mad *in_mad, 92 struct ib_mad *out_mad) 93 { 94 return -ENOSYS; 95 } 96 97 static int c4iw_dealloc_ucontext(struct ib_ucontext *context) 98 { 99 struct c4iw_dev *rhp = to_c4iw_dev(context->device); 100 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); 101 struct c4iw_mm_entry *mm, *tmp; 102 103 PDBG("%s context %p\n", __func__, context); 104 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) 105 kfree(mm); 106 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); 107 kfree(ucontext); 108 return 0; 109 } 110 111 static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev, 112 struct ib_udata *udata) 113 { 114 struct c4iw_ucontext *context; 115 struct c4iw_dev *rhp = to_c4iw_dev(ibdev); 116 117 PDBG("%s ibdev %p\n", __func__, ibdev); 118 context = kzalloc(sizeof(*context), GFP_KERNEL); 119 if (!context) 120 return ERR_PTR(-ENOMEM); 121 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); 122 INIT_LIST_HEAD(&context->mmaps); 123 spin_lock_init(&context->mmap_lock); 124 return &context->ibucontext; 125 } 126 127 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 128 { 129 int len = vma->vm_end - vma->vm_start; 130 u32 key = vma->vm_pgoff << PAGE_SHIFT; 131 struct c4iw_rdev *rdev; 132 int ret = 0; 133 struct c4iw_mm_entry *mm; 134 struct c4iw_ucontext *ucontext; 135 u64 addr; 136 137 PDBG("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff, 138 key, len); 139 140 if (vma->vm_start & (PAGE_SIZE-1)) 141 return -EINVAL; 142 143 rdev = &(to_c4iw_dev(context->device)->rdev); 144 ucontext = to_c4iw_ucontext(context); 145 146 mm = remove_mmap(ucontext, key, len); 147 if (!mm) 148 return -EINVAL; 149 addr = mm->addr; 150 kfree(mm); 151 152 if ((addr >= pci_resource_start(rdev->lldi.pdev, 0)) && 153 (addr < (pci_resource_start(rdev->lldi.pdev, 0) + 154 pci_resource_len(rdev->lldi.pdev, 0)))) { 155 156 /* 157 * MA_SYNC register... 158 */ 159 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 160 ret = io_remap_pfn_range(vma, vma->vm_start, 161 addr >> PAGE_SHIFT, 162 len, vma->vm_page_prot); 163 } else if ((addr >= pci_resource_start(rdev->lldi.pdev, 2)) && 164 (addr < (pci_resource_start(rdev->lldi.pdev, 2) + 165 pci_resource_len(rdev->lldi.pdev, 2)))) { 166 167 /* 168 * Map user DB or OCQP memory... 169 */ 170 if (addr >= rdev->oc_mw_pa) 171 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot); 172 else 173 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 174 ret = io_remap_pfn_range(vma, vma->vm_start, 175 addr >> PAGE_SHIFT, 176 len, vma->vm_page_prot); 177 } else { 178 179 /* 180 * Map WQ or CQ contig dma memory... 181 */ 182 ret = remap_pfn_range(vma, vma->vm_start, 183 addr >> PAGE_SHIFT, 184 len, vma->vm_page_prot); 185 } 186 187 return ret; 188 } 189 190 static int c4iw_deallocate_pd(struct ib_pd *pd) 191 { 192 struct c4iw_dev *rhp; 193 struct c4iw_pd *php; 194 195 php = to_c4iw_pd(pd); 196 rhp = php->rhp; 197 PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid); 198 c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, php->pdid, 199 &rhp->rdev.resource.pdid_fifo_lock); 200 kfree(php); 201 return 0; 202 } 203 204 static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev, 205 struct ib_ucontext *context, 206 struct ib_udata *udata) 207 { 208 struct c4iw_pd *php; 209 u32 pdid; 210 struct c4iw_dev *rhp; 211 212 PDBG("%s ibdev %p\n", __func__, ibdev); 213 rhp = (struct c4iw_dev *) ibdev; 214 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_fifo, 215 &rhp->rdev.resource.pdid_fifo_lock); 216 if (!pdid) 217 return ERR_PTR(-EINVAL); 218 php = kzalloc(sizeof(*php), GFP_KERNEL); 219 if (!php) { 220 c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, pdid, 221 &rhp->rdev.resource.pdid_fifo_lock); 222 return ERR_PTR(-ENOMEM); 223 } 224 php->pdid = pdid; 225 php->rhp = rhp; 226 if (context) { 227 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) { 228 c4iw_deallocate_pd(&php->ibpd); 229 return ERR_PTR(-EFAULT); 230 } 231 } 232 PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php); 233 return &php->ibpd; 234 } 235 236 static int c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 237 u16 *pkey) 238 { 239 PDBG("%s ibdev %p\n", __func__, ibdev); 240 *pkey = 0; 241 return 0; 242 } 243 244 static int c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, 245 union ib_gid *gid) 246 { 247 struct c4iw_dev *dev; 248 249 PDBG("%s ibdev %p, port %d, index %d, gid %p\n", 250 __func__, ibdev, port, index, gid); 251 dev = to_c4iw_dev(ibdev); 252 BUG_ON(port == 0); 253 memset(&(gid->raw[0]), 0, sizeof(gid->raw)); 254 memcpy(&(gid->raw[0]), dev->rdev.lldi.ports[port-1]->dev_addr, 6); 255 return 0; 256 } 257 258 static int c4iw_query_device(struct ib_device *ibdev, 259 struct ib_device_attr *props) 260 { 261 262 struct c4iw_dev *dev; 263 PDBG("%s ibdev %p\n", __func__, ibdev); 264 265 dev = to_c4iw_dev(ibdev); 266 memset(props, 0, sizeof *props); 267 memcpy(&props->sys_image_guid, dev->rdev.lldi.ports[0]->dev_addr, 6); 268 props->hw_ver = dev->rdev.lldi.adapter_type; 269 props->fw_ver = dev->rdev.lldi.fw_vers; 270 props->device_cap_flags = dev->device_cap_flags; 271 props->page_size_cap = T4_PAGESIZE_MASK; 272 props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor; 273 props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device; 274 props->max_mr_size = T4_MAX_MR_SIZE; 275 props->max_qp = T4_MAX_NUM_QP; 276 props->max_qp_wr = T4_MAX_QP_DEPTH; 277 props->max_sge = T4_MAX_RECV_SGE; 278 props->max_sge_rd = 1; 279 props->max_qp_rd_atom = c4iw_max_read_depth; 280 props->max_qp_init_rd_atom = c4iw_max_read_depth; 281 props->max_cq = T4_MAX_NUM_CQ; 282 props->max_cqe = T4_MAX_CQ_DEPTH; 283 props->max_mr = c4iw_num_stags(&dev->rdev); 284 props->max_pd = T4_MAX_NUM_PD; 285 props->local_ca_ack_delay = 0; 286 props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH; 287 288 return 0; 289 } 290 291 static int c4iw_query_port(struct ib_device *ibdev, u8 port, 292 struct ib_port_attr *props) 293 { 294 struct c4iw_dev *dev; 295 struct net_device *netdev; 296 struct in_device *inetdev; 297 298 PDBG("%s ibdev %p\n", __func__, ibdev); 299 300 dev = to_c4iw_dev(ibdev); 301 netdev = dev->rdev.lldi.ports[port-1]; 302 303 memset(props, 0, sizeof(struct ib_port_attr)); 304 props->max_mtu = IB_MTU_4096; 305 if (netdev->mtu >= 4096) 306 props->active_mtu = IB_MTU_4096; 307 else if (netdev->mtu >= 2048) 308 props->active_mtu = IB_MTU_2048; 309 else if (netdev->mtu >= 1024) 310 props->active_mtu = IB_MTU_1024; 311 else if (netdev->mtu >= 512) 312 props->active_mtu = IB_MTU_512; 313 else 314 props->active_mtu = IB_MTU_256; 315 316 if (!netif_carrier_ok(netdev)) 317 props->state = IB_PORT_DOWN; 318 else { 319 inetdev = in_dev_get(netdev); 320 if (inetdev) { 321 if (inetdev->ifa_list) 322 props->state = IB_PORT_ACTIVE; 323 else 324 props->state = IB_PORT_INIT; 325 in_dev_put(inetdev); 326 } else 327 props->state = IB_PORT_INIT; 328 } 329 330 props->port_cap_flags = 331 IB_PORT_CM_SUP | 332 IB_PORT_SNMP_TUNNEL_SUP | 333 IB_PORT_REINIT_SUP | 334 IB_PORT_DEVICE_MGMT_SUP | 335 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 336 props->gid_tbl_len = 1; 337 props->pkey_tbl_len = 1; 338 props->active_width = 2; 339 props->active_speed = 2; 340 props->max_msg_sz = -1; 341 342 return 0; 343 } 344 345 static ssize_t show_rev(struct device *dev, struct device_attribute *attr, 346 char *buf) 347 { 348 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 349 ibdev.dev); 350 PDBG("%s dev 0x%p\n", __func__, dev); 351 return sprintf(buf, "%d\n", c4iw_dev->rdev.lldi.adapter_type); 352 } 353 354 static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, 355 char *buf) 356 { 357 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 358 ibdev.dev); 359 PDBG("%s dev 0x%p\n", __func__, dev); 360 361 return sprintf(buf, "%u.%u.%u.%u\n", 362 FW_HDR_FW_VER_MAJOR_GET(c4iw_dev->rdev.lldi.fw_vers), 363 FW_HDR_FW_VER_MINOR_GET(c4iw_dev->rdev.lldi.fw_vers), 364 FW_HDR_FW_VER_MICRO_GET(c4iw_dev->rdev.lldi.fw_vers), 365 FW_HDR_FW_VER_BUILD_GET(c4iw_dev->rdev.lldi.fw_vers)); 366 } 367 368 static ssize_t show_hca(struct device *dev, struct device_attribute *attr, 369 char *buf) 370 { 371 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 372 ibdev.dev); 373 struct ethtool_drvinfo info; 374 struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0]; 375 376 PDBG("%s dev 0x%p\n", __func__, dev); 377 lldev->ethtool_ops->get_drvinfo(lldev, &info); 378 return sprintf(buf, "%s\n", info.driver); 379 } 380 381 static ssize_t show_board(struct device *dev, struct device_attribute *attr, 382 char *buf) 383 { 384 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev, 385 ibdev.dev); 386 PDBG("%s dev 0x%p\n", __func__, dev); 387 return sprintf(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor, 388 c4iw_dev->rdev.lldi.pdev->device); 389 } 390 391 static int c4iw_get_mib(struct ib_device *ibdev, 392 union rdma_protocol_stats *stats) 393 { 394 struct tp_tcp_stats v4, v6; 395 struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev); 396 397 cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6); 398 memset(stats, 0, sizeof *stats); 399 stats->iw.tcpInSegs = v4.tcpInSegs + v6.tcpInSegs; 400 stats->iw.tcpOutSegs = v4.tcpOutSegs + v6.tcpOutSegs; 401 stats->iw.tcpRetransSegs = v4.tcpRetransSegs + v6.tcpRetransSegs; 402 stats->iw.tcpOutRsts = v4.tcpOutRsts + v6.tcpOutSegs; 403 404 return 0; 405 } 406 407 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 408 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 409 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 410 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 411 412 static struct device_attribute *c4iw_class_attributes[] = { 413 &dev_attr_hw_rev, 414 &dev_attr_fw_ver, 415 &dev_attr_hca_type, 416 &dev_attr_board_id, 417 }; 418 419 int c4iw_register_device(struct c4iw_dev *dev) 420 { 421 int ret; 422 int i; 423 424 PDBG("%s c4iw_dev %p\n", __func__, dev); 425 BUG_ON(!dev->rdev.lldi.ports[0]); 426 strlcpy(dev->ibdev.name, "cxgb4_%d", IB_DEVICE_NAME_MAX); 427 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); 428 memcpy(&dev->ibdev.node_guid, dev->rdev.lldi.ports[0]->dev_addr, 6); 429 dev->ibdev.owner = THIS_MODULE; 430 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; 431 if (fastreg_support) 432 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 433 dev->ibdev.local_dma_lkey = 0; 434 dev->ibdev.uverbs_cmd_mask = 435 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 436 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 437 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 438 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 439 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 440 (1ull << IB_USER_VERBS_CMD_REG_MR) | 441 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 442 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 443 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 444 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 445 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 446 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 447 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 448 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 449 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 450 (1ull << IB_USER_VERBS_CMD_POST_SEND) | 451 (1ull << IB_USER_VERBS_CMD_POST_RECV); 452 dev->ibdev.node_type = RDMA_NODE_RNIC; 453 memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC)); 454 dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports; 455 dev->ibdev.num_comp_vectors = 1; 456 dev->ibdev.dma_device = &(dev->rdev.lldi.pdev->dev); 457 dev->ibdev.query_device = c4iw_query_device; 458 dev->ibdev.query_port = c4iw_query_port; 459 dev->ibdev.modify_port = c4iw_modify_port; 460 dev->ibdev.query_pkey = c4iw_query_pkey; 461 dev->ibdev.query_gid = c4iw_query_gid; 462 dev->ibdev.alloc_ucontext = c4iw_alloc_ucontext; 463 dev->ibdev.dealloc_ucontext = c4iw_dealloc_ucontext; 464 dev->ibdev.mmap = c4iw_mmap; 465 dev->ibdev.alloc_pd = c4iw_allocate_pd; 466 dev->ibdev.dealloc_pd = c4iw_deallocate_pd; 467 dev->ibdev.create_ah = c4iw_ah_create; 468 dev->ibdev.destroy_ah = c4iw_ah_destroy; 469 dev->ibdev.create_qp = c4iw_create_qp; 470 dev->ibdev.modify_qp = c4iw_ib_modify_qp; 471 dev->ibdev.destroy_qp = c4iw_destroy_qp; 472 dev->ibdev.create_cq = c4iw_create_cq; 473 dev->ibdev.destroy_cq = c4iw_destroy_cq; 474 dev->ibdev.resize_cq = c4iw_resize_cq; 475 dev->ibdev.poll_cq = c4iw_poll_cq; 476 dev->ibdev.get_dma_mr = c4iw_get_dma_mr; 477 dev->ibdev.reg_phys_mr = c4iw_register_phys_mem; 478 dev->ibdev.rereg_phys_mr = c4iw_reregister_phys_mem; 479 dev->ibdev.reg_user_mr = c4iw_reg_user_mr; 480 dev->ibdev.dereg_mr = c4iw_dereg_mr; 481 dev->ibdev.alloc_mw = c4iw_alloc_mw; 482 dev->ibdev.bind_mw = c4iw_bind_mw; 483 dev->ibdev.dealloc_mw = c4iw_dealloc_mw; 484 dev->ibdev.alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr; 485 dev->ibdev.alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl; 486 dev->ibdev.free_fast_reg_page_list = c4iw_free_fastreg_pbl; 487 dev->ibdev.attach_mcast = c4iw_multicast_attach; 488 dev->ibdev.detach_mcast = c4iw_multicast_detach; 489 dev->ibdev.process_mad = c4iw_process_mad; 490 dev->ibdev.req_notify_cq = c4iw_arm_cq; 491 dev->ibdev.post_send = c4iw_post_send; 492 dev->ibdev.post_recv = c4iw_post_receive; 493 dev->ibdev.get_protocol_stats = c4iw_get_mib; 494 dev->ibdev.uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION; 495 496 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL); 497 if (!dev->ibdev.iwcm) 498 return -ENOMEM; 499 500 dev->ibdev.iwcm->connect = c4iw_connect; 501 dev->ibdev.iwcm->accept = c4iw_accept_cr; 502 dev->ibdev.iwcm->reject = c4iw_reject_cr; 503 dev->ibdev.iwcm->create_listen = c4iw_create_listen; 504 dev->ibdev.iwcm->destroy_listen = c4iw_destroy_listen; 505 dev->ibdev.iwcm->add_ref = c4iw_qp_add_ref; 506 dev->ibdev.iwcm->rem_ref = c4iw_qp_rem_ref; 507 dev->ibdev.iwcm->get_qp = c4iw_get_qp; 508 509 ret = ib_register_device(&dev->ibdev, NULL); 510 if (ret) 511 goto bail1; 512 513 for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) { 514 ret = device_create_file(&dev->ibdev.dev, 515 c4iw_class_attributes[i]); 516 if (ret) 517 goto bail2; 518 } 519 dev->registered = 1; 520 return 0; 521 bail2: 522 ib_unregister_device(&dev->ibdev); 523 bail1: 524 kfree(dev->ibdev.iwcm); 525 return ret; 526 } 527 528 void c4iw_unregister_device(struct c4iw_dev *dev) 529 { 530 int i; 531 532 PDBG("%s c4iw_dev %p\n", __func__, dev); 533 for (i = 0; i < ARRAY_SIZE(c4iw_class_attributes); ++i) 534 device_remove_file(&dev->ibdev.dev, 535 c4iw_class_attributes[i]); 536 ib_unregister_device(&dev->ibdev); 537 kfree(dev->ibdev.iwcm); 538 dev->registered = 0; 539 return; 540 } 541