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
c4iw_dealloc_ucontext(struct ib_ucontext * context)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
c4iw_alloc_ucontext(struct ib_ucontext * ucontext,struct ib_udata * udata)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
c4iw_mmap(struct ib_ucontext * context,struct vm_area_struct * vma)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
c4iw_deallocate_pd(struct ib_pd * pd,struct ib_udata * udata)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
c4iw_allocate_pd(struct ib_pd * pd,struct ib_udata * udata)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
c4iw_query_gid(struct ib_device * ibdev,u32 port,int index,union ib_gid * gid)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
c4iw_query_device(struct ib_device * ibdev,struct ib_device_attr * props,struct ib_udata * uhw)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 = IB_DEVICE_MEM_WINDOW;
273 props->kernel_cap_flags = IBK_LOCAL_DMA_LKEY;
274 if (fastreg_support)
275 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
276 props->page_size_cap = T4_PAGESIZE_MASK;
277 props->vendor_id = (u32)dev->rdev.lldi.pdev->vendor;
278 props->vendor_part_id = (u32)dev->rdev.lldi.pdev->device;
279 props->max_mr_size = T4_MAX_MR_SIZE;
280 props->max_qp = dev->rdev.lldi.vr->qp.size / 2;
281 props->max_srq = dev->rdev.lldi.vr->srq.size;
282 props->max_qp_wr = dev->rdev.hw_queue.t4_max_qp_depth;
283 props->max_srq_wr = dev->rdev.hw_queue.t4_max_qp_depth;
284 props->max_send_sge = min(T4_MAX_SEND_SGE, T4_MAX_WRITE_SGE);
285 props->max_recv_sge = T4_MAX_RECV_SGE;
286 props->max_srq_sge = T4_MAX_RECV_SGE;
287 props->max_sge_rd = 1;
288 props->max_res_rd_atom = dev->rdev.lldi.max_ird_adapter;
289 props->max_qp_rd_atom = min(dev->rdev.lldi.max_ordird_qp,
290 c4iw_max_read_depth);
291 props->max_qp_init_rd_atom = props->max_qp_rd_atom;
292 props->max_cq = dev->rdev.lldi.vr->qp.size;
293 props->max_cqe = dev->rdev.hw_queue.t4_max_cq_depth;
294 props->max_mr = c4iw_num_stags(&dev->rdev);
295 props->max_pd = T4_MAX_NUM_PD;
296 props->local_ca_ack_delay = 0;
297 props->max_fast_reg_page_list_len =
298 t4_max_fr_depth(dev->rdev.lldi.ulptx_memwrite_dsgl && use_dsgl);
299
300 return 0;
301 }
302
c4iw_query_port(struct ib_device * ibdev,u32 port,struct ib_port_attr * props)303 static int c4iw_query_port(struct ib_device *ibdev, u32 port,
304 struct ib_port_attr *props)
305 {
306 int ret = 0;
307 pr_debug("ibdev %p\n", ibdev);
308 ret = ib_get_eth_speed(ibdev, port, &props->active_speed,
309 &props->active_width);
310
311 props->port_cap_flags =
312 IB_PORT_CM_SUP |
313 IB_PORT_SNMP_TUNNEL_SUP |
314 IB_PORT_REINIT_SUP |
315 IB_PORT_DEVICE_MGMT_SUP |
316 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
317 props->gid_tbl_len = 1;
318 props->max_msg_sz = -1;
319
320 return ret;
321 }
322
hw_rev_show(struct device * dev,struct device_attribute * attr,char * buf)323 static ssize_t hw_rev_show(struct device *dev,
324 struct device_attribute *attr, char *buf)
325 {
326 struct c4iw_dev *c4iw_dev =
327 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
328
329 pr_debug("dev 0x%p\n", dev);
330 return sysfs_emit(
331 buf, "%d\n",
332 CHELSIO_CHIP_RELEASE(c4iw_dev->rdev.lldi.adapter_type));
333 }
334 static DEVICE_ATTR_RO(hw_rev);
335
hca_type_show(struct device * dev,struct device_attribute * attr,char * buf)336 static ssize_t hca_type_show(struct device *dev,
337 struct device_attribute *attr, char *buf)
338 {
339 struct c4iw_dev *c4iw_dev =
340 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
341 struct ethtool_drvinfo info;
342 struct net_device *lldev = c4iw_dev->rdev.lldi.ports[0];
343
344 pr_debug("dev 0x%p\n", dev);
345 lldev->ethtool_ops->get_drvinfo(lldev, &info);
346 return sysfs_emit(buf, "%s\n", info.driver);
347 }
348 static DEVICE_ATTR_RO(hca_type);
349
board_id_show(struct device * dev,struct device_attribute * attr,char * buf)350 static ssize_t board_id_show(struct device *dev, struct device_attribute *attr,
351 char *buf)
352 {
353 struct c4iw_dev *c4iw_dev =
354 rdma_device_to_drv_device(dev, struct c4iw_dev, ibdev);
355
356 pr_debug("dev 0x%p\n", dev);
357 return sysfs_emit(buf, "%x.%x\n", c4iw_dev->rdev.lldi.pdev->vendor,
358 c4iw_dev->rdev.lldi.pdev->device);
359 }
360 static DEVICE_ATTR_RO(board_id);
361
362 enum counters {
363 IP4INSEGS,
364 IP4OUTSEGS,
365 IP4RETRANSSEGS,
366 IP4OUTRSTS,
367 IP6INSEGS,
368 IP6OUTSEGS,
369 IP6RETRANSSEGS,
370 IP6OUTRSTS,
371 NR_COUNTERS
372 };
373
374 static const struct rdma_stat_desc cxgb4_descs[] = {
375 [IP4INSEGS].name = "ip4InSegs",
376 [IP4OUTSEGS].name = "ip4OutSegs",
377 [IP4RETRANSSEGS].name = "ip4RetransSegs",
378 [IP4OUTRSTS].name = "ip4OutRsts",
379 [IP6INSEGS].name = "ip6InSegs",
380 [IP6OUTSEGS].name = "ip6OutSegs",
381 [IP6RETRANSSEGS].name = "ip6RetransSegs",
382 [IP6OUTRSTS].name = "ip6OutRsts"
383 };
384
c4iw_alloc_device_stats(struct ib_device * ibdev)385 static struct rdma_hw_stats *c4iw_alloc_device_stats(struct ib_device *ibdev)
386 {
387 BUILD_BUG_ON(ARRAY_SIZE(cxgb4_descs) != NR_COUNTERS);
388
389 /* FIXME: these look like port stats */
390 return rdma_alloc_hw_stats_struct(cxgb4_descs, NR_COUNTERS,
391 RDMA_HW_STATS_DEFAULT_LIFESPAN);
392 }
393
c4iw_get_mib(struct ib_device * ibdev,struct rdma_hw_stats * stats,u32 port,int index)394 static int c4iw_get_mib(struct ib_device *ibdev,
395 struct rdma_hw_stats *stats,
396 u32 port, int index)
397 {
398 struct tp_tcp_stats v4, v6;
399 struct c4iw_dev *c4iw_dev = to_c4iw_dev(ibdev);
400
401 cxgb4_get_tcp_stats(c4iw_dev->rdev.lldi.pdev, &v4, &v6);
402 stats->value[IP4INSEGS] = v4.tcp_in_segs;
403 stats->value[IP4OUTSEGS] = v4.tcp_out_segs;
404 stats->value[IP4RETRANSSEGS] = v4.tcp_retrans_segs;
405 stats->value[IP4OUTRSTS] = v4.tcp_out_rsts;
406 stats->value[IP6INSEGS] = v6.tcp_in_segs;
407 stats->value[IP6OUTSEGS] = v6.tcp_out_segs;
408 stats->value[IP6RETRANSSEGS] = v6.tcp_retrans_segs;
409 stats->value[IP6OUTRSTS] = v6.tcp_out_rsts;
410
411 return stats->num_counters;
412 }
413
414 static struct attribute *c4iw_class_attributes[] = {
415 &dev_attr_hw_rev.attr,
416 &dev_attr_hca_type.attr,
417 &dev_attr_board_id.attr,
418 NULL
419 };
420
421 static const struct attribute_group c4iw_attr_group = {
422 .attrs = c4iw_class_attributes,
423 };
424
c4iw_port_immutable(struct ib_device * ibdev,u32 port_num,struct ib_port_immutable * immutable)425 static int c4iw_port_immutable(struct ib_device *ibdev, u32 port_num,
426 struct ib_port_immutable *immutable)
427 {
428 struct ib_port_attr attr;
429 int err;
430
431 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
432
433 err = ib_query_port(ibdev, port_num, &attr);
434 if (err)
435 return err;
436
437 immutable->gid_tbl_len = attr.gid_tbl_len;
438
439 return 0;
440 }
441
get_dev_fw_str(struct ib_device * dev,char * str)442 static void get_dev_fw_str(struct ib_device *dev, char *str)
443 {
444 struct c4iw_dev *c4iw_dev = container_of(dev, struct c4iw_dev,
445 ibdev);
446 pr_debug("dev 0x%p\n", dev);
447
448 snprintf(str, IB_FW_VERSION_NAME_MAX, "%u.%u.%u.%u",
449 FW_HDR_FW_VER_MAJOR_G(c4iw_dev->rdev.lldi.fw_vers),
450 FW_HDR_FW_VER_MINOR_G(c4iw_dev->rdev.lldi.fw_vers),
451 FW_HDR_FW_VER_MICRO_G(c4iw_dev->rdev.lldi.fw_vers),
452 FW_HDR_FW_VER_BUILD_G(c4iw_dev->rdev.lldi.fw_vers));
453 }
454
455 static const struct ib_device_ops c4iw_dev_ops = {
456 .owner = THIS_MODULE,
457 .driver_id = RDMA_DRIVER_CXGB4,
458 .uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION,
459
460 .alloc_hw_device_stats = c4iw_alloc_device_stats,
461 .alloc_mr = c4iw_alloc_mr,
462 .alloc_pd = c4iw_allocate_pd,
463 .alloc_ucontext = c4iw_alloc_ucontext,
464 .create_cq = c4iw_create_cq,
465 .create_qp = c4iw_create_qp,
466 .create_srq = c4iw_create_srq,
467 .dealloc_pd = c4iw_deallocate_pd,
468 .dealloc_ucontext = c4iw_dealloc_ucontext,
469 .dereg_mr = c4iw_dereg_mr,
470 .destroy_cq = c4iw_destroy_cq,
471 .destroy_qp = c4iw_destroy_qp,
472 .destroy_srq = c4iw_destroy_srq,
473 .device_group = &c4iw_attr_group,
474 .fill_res_cq_entry = c4iw_fill_res_cq_entry,
475 .fill_res_cm_id_entry = c4iw_fill_res_cm_id_entry,
476 .fill_res_mr_entry = c4iw_fill_res_mr_entry,
477 .fill_res_qp_entry = c4iw_fill_res_qp_entry,
478 .get_dev_fw_str = get_dev_fw_str,
479 .get_dma_mr = c4iw_get_dma_mr,
480 .get_hw_stats = c4iw_get_mib,
481 .get_port_immutable = c4iw_port_immutable,
482 .iw_accept = c4iw_accept_cr,
483 .iw_add_ref = c4iw_qp_add_ref,
484 .iw_connect = c4iw_connect,
485 .iw_create_listen = c4iw_create_listen,
486 .iw_destroy_listen = c4iw_destroy_listen,
487 .iw_get_qp = c4iw_get_qp,
488 .iw_reject = c4iw_reject_cr,
489 .iw_rem_ref = c4iw_qp_rem_ref,
490 .map_mr_sg = c4iw_map_mr_sg,
491 .mmap = c4iw_mmap,
492 .modify_qp = c4iw_ib_modify_qp,
493 .modify_srq = c4iw_modify_srq,
494 .poll_cq = c4iw_poll_cq,
495 .post_recv = c4iw_post_receive,
496 .post_send = c4iw_post_send,
497 .post_srq_recv = c4iw_post_srq_recv,
498 .query_device = c4iw_query_device,
499 .query_gid = c4iw_query_gid,
500 .query_port = c4iw_query_port,
501 .query_qp = c4iw_ib_query_qp,
502 .reg_user_mr = c4iw_reg_user_mr,
503 .req_notify_cq = c4iw_arm_cq,
504
505 INIT_RDMA_OBJ_SIZE(ib_cq, c4iw_cq, ibcq),
506 INIT_RDMA_OBJ_SIZE(ib_mw, c4iw_mw, ibmw),
507 INIT_RDMA_OBJ_SIZE(ib_pd, c4iw_pd, ibpd),
508 INIT_RDMA_OBJ_SIZE(ib_qp, c4iw_qp, ibqp),
509 INIT_RDMA_OBJ_SIZE(ib_srq, c4iw_srq, ibsrq),
510 INIT_RDMA_OBJ_SIZE(ib_ucontext, c4iw_ucontext, ibucontext),
511 };
512
set_netdevs(struct ib_device * ib_dev,struct c4iw_rdev * rdev)513 static int set_netdevs(struct ib_device *ib_dev, struct c4iw_rdev *rdev)
514 {
515 int ret;
516 int i;
517
518 for (i = 0; i < rdev->lldi.nports; i++) {
519 ret = ib_device_set_netdev(ib_dev, rdev->lldi.ports[i],
520 i + 1);
521 if (ret)
522 return ret;
523 }
524 return 0;
525 }
526
c4iw_register_device(struct work_struct * work)527 void c4iw_register_device(struct work_struct *work)
528 {
529 int ret;
530 struct uld_ctx *ctx = container_of(work, struct uld_ctx, reg_work);
531 struct c4iw_dev *dev = ctx->dev;
532
533 pr_debug("c4iw_dev %p\n", dev);
534 addrconf_addr_eui48((u8 *)&dev->ibdev.node_guid,
535 dev->rdev.lldi.ports[0]->dev_addr);
536 dev->ibdev.local_dma_lkey = 0;
537 dev->ibdev.node_type = RDMA_NODE_RNIC;
538 BUILD_BUG_ON(sizeof(C4IW_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
539 memcpy(dev->ibdev.node_desc, C4IW_NODE_DESC, sizeof(C4IW_NODE_DESC));
540 dev->ibdev.phys_port_cnt = dev->rdev.lldi.nports;
541 dev->ibdev.num_comp_vectors = dev->rdev.lldi.nciq;
542 dev->ibdev.dev.parent = &dev->rdev.lldi.pdev->dev;
543
544 memcpy(dev->ibdev.iw_ifname, dev->rdev.lldi.ports[0]->name,
545 sizeof(dev->ibdev.iw_ifname));
546
547 ib_set_device_ops(&dev->ibdev, &c4iw_dev_ops);
548 ret = set_netdevs(&dev->ibdev, &dev->rdev);
549 if (ret)
550 goto err_dealloc_ctx;
551 dma_set_max_seg_size(&dev->rdev.lldi.pdev->dev, UINT_MAX);
552 ret = ib_register_device(&dev->ibdev, "cxgb4_%d",
553 &dev->rdev.lldi.pdev->dev);
554 if (ret)
555 goto err_dealloc_ctx;
556 return;
557
558 err_dealloc_ctx:
559 pr_err("%s - Failed registering iwarp device: %d\n",
560 pci_name(ctx->lldi.pdev), ret);
561 c4iw_dealloc(ctx);
562 return;
563 }
564
c4iw_unregister_device(struct c4iw_dev * dev)565 void c4iw_unregister_device(struct c4iw_dev *dev)
566 {
567 pr_debug("c4iw_dev %p\n", dev);
568 ib_unregister_device(&dev->ibdev);
569 return;
570 }
571