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f94b533d TT |
1 | /* |
2 | * Copyright (c) 2005 Ammasso, Inc. All rights reserved. | |
3 | * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. | |
4 | * | |
5 | * This software is available to you under a choice of one of two | |
6 | * licenses. You may choose to be licensed under the terms of the GNU | |
7 | * General Public License (GPL) Version 2, available from the file | |
8 | * COPYING in the main directory of this source tree, or the | |
9 | * OpenIB.org BSD license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * - Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
19 | * - Redistributions in binary form must reproduce the above | |
20 | * copyright notice, this list of conditions and the following | |
21 | * disclaimer in the documentation and/or other materials | |
22 | * provided with the distribution. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
31 | * SOFTWARE. | |
32 | * | |
33 | */ | |
34 | ||
35 | #include <linux/module.h> | |
36 | #include <linux/moduleparam.h> | |
37 | #include <linux/pci.h> | |
38 | #include <linux/netdevice.h> | |
39 | #include <linux/etherdevice.h> | |
40 | #include <linux/inetdevice.h> | |
41 | #include <linux/delay.h> | |
42 | #include <linux/ethtool.h> | |
43 | #include <linux/mii.h> | |
44 | #include <linux/if_vlan.h> | |
45 | #include <linux/crc32.h> | |
46 | #include <linux/in.h> | |
47 | #include <linux/ip.h> | |
48 | #include <linux/tcp.h> | |
49 | #include <linux/init.h> | |
50 | #include <linux/dma-mapping.h> | |
51 | #include <linux/if_arp.h> | |
d7b20045 | 52 | #include <linux/vmalloc.h> |
f94b533d TT |
53 | |
54 | #include <asm/io.h> | |
55 | #include <asm/irq.h> | |
56 | #include <asm/byteorder.h> | |
57 | ||
58 | #include <rdma/ib_smi.h> | |
59 | #include <rdma/ib_user_verbs.h> | |
60 | #include "c2.h" | |
61 | #include "c2_provider.h" | |
62 | #include "c2_user.h" | |
63 | ||
64 | static int c2_query_device(struct ib_device *ibdev, | |
65 | struct ib_device_attr *props) | |
66 | { | |
67 | struct c2_dev *c2dev = to_c2dev(ibdev); | |
68 | ||
69 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
70 | ||
71 | *props = c2dev->props; | |
72 | return 0; | |
73 | } | |
74 | ||
75 | static int c2_query_port(struct ib_device *ibdev, | |
76 | u8 port, struct ib_port_attr *props) | |
77 | { | |
78 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
79 | ||
80 | props->max_mtu = IB_MTU_4096; | |
81 | props->lid = 0; | |
82 | props->lmc = 0; | |
83 | props->sm_lid = 0; | |
84 | props->sm_sl = 0; | |
85 | props->state = IB_PORT_ACTIVE; | |
86 | props->phys_state = 0; | |
87 | props->port_cap_flags = | |
88 | IB_PORT_CM_SUP | | |
89 | IB_PORT_REINIT_SUP | | |
90 | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; | |
91 | props->gid_tbl_len = 1; | |
92 | props->pkey_tbl_len = 1; | |
93 | props->qkey_viol_cntr = 0; | |
94 | props->active_width = 1; | |
95 | props->active_speed = 1; | |
96 | ||
97 | return 0; | |
98 | } | |
99 | ||
100 | static int c2_modify_port(struct ib_device *ibdev, | |
101 | u8 port, int port_modify_mask, | |
102 | struct ib_port_modify *props) | |
103 | { | |
104 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
105 | return 0; | |
106 | } | |
107 | ||
108 | static int c2_query_pkey(struct ib_device *ibdev, | |
109 | u8 port, u16 index, u16 * pkey) | |
110 | { | |
111 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
112 | *pkey = 0; | |
113 | return 0; | |
114 | } | |
115 | ||
116 | static int c2_query_gid(struct ib_device *ibdev, u8 port, | |
117 | int index, union ib_gid *gid) | |
118 | { | |
119 | struct c2_dev *c2dev = to_c2dev(ibdev); | |
120 | ||
121 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
122 | memset(&(gid->raw[0]), 0, sizeof(gid->raw)); | |
123 | memcpy(&(gid->raw[0]), c2dev->pseudo_netdev->dev_addr, 6); | |
124 | ||
125 | return 0; | |
126 | } | |
127 | ||
128 | /* Allocate the user context data structure. This keeps track | |
129 | * of all objects associated with a particular user-mode client. | |
130 | */ | |
131 | static struct ib_ucontext *c2_alloc_ucontext(struct ib_device *ibdev, | |
132 | struct ib_udata *udata) | |
133 | { | |
134 | struct c2_ucontext *context; | |
135 | ||
136 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
137 | context = kmalloc(sizeof(*context), GFP_KERNEL); | |
138 | if (!context) | |
139 | return ERR_PTR(-ENOMEM); | |
140 | ||
141 | return &context->ibucontext; | |
142 | } | |
143 | ||
144 | static int c2_dealloc_ucontext(struct ib_ucontext *context) | |
145 | { | |
146 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
147 | kfree(context); | |
148 | return 0; | |
149 | } | |
150 | ||
151 | static int c2_mmap_uar(struct ib_ucontext *context, struct vm_area_struct *vma) | |
152 | { | |
153 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
154 | return -ENOSYS; | |
155 | } | |
156 | ||
157 | static struct ib_pd *c2_alloc_pd(struct ib_device *ibdev, | |
158 | struct ib_ucontext *context, | |
159 | struct ib_udata *udata) | |
160 | { | |
161 | struct c2_pd *pd; | |
162 | int err; | |
163 | ||
164 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
165 | ||
166 | pd = kmalloc(sizeof(*pd), GFP_KERNEL); | |
167 | if (!pd) | |
168 | return ERR_PTR(-ENOMEM); | |
169 | ||
170 | err = c2_pd_alloc(to_c2dev(ibdev), !context, pd); | |
171 | if (err) { | |
172 | kfree(pd); | |
173 | return ERR_PTR(err); | |
174 | } | |
175 | ||
176 | if (context) { | |
177 | if (ib_copy_to_udata(udata, &pd->pd_id, sizeof(__u32))) { | |
178 | c2_pd_free(to_c2dev(ibdev), pd); | |
179 | kfree(pd); | |
180 | return ERR_PTR(-EFAULT); | |
181 | } | |
182 | } | |
183 | ||
184 | return &pd->ibpd; | |
185 | } | |
186 | ||
187 | static int c2_dealloc_pd(struct ib_pd *pd) | |
188 | { | |
189 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
190 | c2_pd_free(to_c2dev(pd->device), to_c2pd(pd)); | |
191 | kfree(pd); | |
192 | ||
193 | return 0; | |
194 | } | |
195 | ||
196 | static struct ib_ah *c2_ah_create(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
197 | { | |
198 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
199 | return ERR_PTR(-ENOSYS); | |
200 | } | |
201 | ||
202 | static int c2_ah_destroy(struct ib_ah *ah) | |
203 | { | |
204 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
205 | return -ENOSYS; | |
206 | } | |
207 | ||
208 | static void c2_add_ref(struct ib_qp *ibqp) | |
209 | { | |
210 | struct c2_qp *qp; | |
211 | BUG_ON(!ibqp); | |
212 | qp = to_c2qp(ibqp); | |
213 | atomic_inc(&qp->refcount); | |
214 | } | |
215 | ||
216 | static void c2_rem_ref(struct ib_qp *ibqp) | |
217 | { | |
218 | struct c2_qp *qp; | |
219 | BUG_ON(!ibqp); | |
220 | qp = to_c2qp(ibqp); | |
221 | if (atomic_dec_and_test(&qp->refcount)) | |
222 | wake_up(&qp->wait); | |
223 | } | |
224 | ||
225 | struct ib_qp *c2_get_qp(struct ib_device *device, int qpn) | |
226 | { | |
227 | struct c2_dev* c2dev = to_c2dev(device); | |
228 | struct c2_qp *qp; | |
229 | ||
230 | qp = c2_find_qpn(c2dev, qpn); | |
231 | pr_debug("%s Returning QP=%p for QPN=%d, device=%p, refcount=%d\n", | |
232 | __FUNCTION__, qp, qpn, device, | |
233 | (qp?atomic_read(&qp->refcount):0)); | |
234 | ||
235 | return (qp?&qp->ibqp:NULL); | |
236 | } | |
237 | ||
238 | static struct ib_qp *c2_create_qp(struct ib_pd *pd, | |
239 | struct ib_qp_init_attr *init_attr, | |
240 | struct ib_udata *udata) | |
241 | { | |
242 | struct c2_qp *qp; | |
243 | int err; | |
244 | ||
245 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
246 | ||
247 | switch (init_attr->qp_type) { | |
248 | case IB_QPT_RC: | |
249 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); | |
250 | if (!qp) { | |
251 | pr_debug("%s: Unable to allocate QP\n", __FUNCTION__); | |
252 | return ERR_PTR(-ENOMEM); | |
253 | } | |
254 | spin_lock_init(&qp->lock); | |
255 | if (pd->uobject) { | |
256 | /* userspace specific */ | |
257 | } | |
258 | ||
259 | err = c2_alloc_qp(to_c2dev(pd->device), | |
260 | to_c2pd(pd), init_attr, qp); | |
261 | ||
262 | if (err && pd->uobject) { | |
263 | /* userspace specific */ | |
264 | } | |
265 | ||
266 | break; | |
267 | default: | |
268 | pr_debug("%s: Invalid QP type: %d\n", __FUNCTION__, | |
269 | init_attr->qp_type); | |
270 | return ERR_PTR(-EINVAL); | |
271 | break; | |
272 | } | |
273 | ||
274 | if (err) { | |
275 | kfree(qp); | |
276 | return ERR_PTR(err); | |
277 | } | |
278 | ||
279 | return &qp->ibqp; | |
280 | } | |
281 | ||
282 | static int c2_destroy_qp(struct ib_qp *ib_qp) | |
283 | { | |
284 | struct c2_qp *qp = to_c2qp(ib_qp); | |
285 | ||
286 | pr_debug("%s:%u qp=%p,qp->state=%d\n", | |
287 | __FUNCTION__, __LINE__,ib_qp,qp->state); | |
288 | c2_free_qp(to_c2dev(ib_qp->device), qp); | |
289 | kfree(qp); | |
290 | return 0; | |
291 | } | |
292 | ||
293 | static struct ib_cq *c2_create_cq(struct ib_device *ibdev, int entries, | |
294 | struct ib_ucontext *context, | |
295 | struct ib_udata *udata) | |
296 | { | |
297 | struct c2_cq *cq; | |
298 | int err; | |
299 | ||
300 | cq = kmalloc(sizeof(*cq), GFP_KERNEL); | |
301 | if (!cq) { | |
302 | pr_debug("%s: Unable to allocate CQ\n", __FUNCTION__); | |
303 | return ERR_PTR(-ENOMEM); | |
304 | } | |
305 | ||
306 | err = c2_init_cq(to_c2dev(ibdev), entries, NULL, cq); | |
307 | if (err) { | |
308 | pr_debug("%s: error initializing CQ\n", __FUNCTION__); | |
309 | kfree(cq); | |
310 | return ERR_PTR(err); | |
311 | } | |
312 | ||
313 | return &cq->ibcq; | |
314 | } | |
315 | ||
316 | static int c2_destroy_cq(struct ib_cq *ib_cq) | |
317 | { | |
318 | struct c2_cq *cq = to_c2cq(ib_cq); | |
319 | ||
320 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
321 | ||
322 | c2_free_cq(to_c2dev(ib_cq->device), cq); | |
323 | kfree(cq); | |
324 | ||
325 | return 0; | |
326 | } | |
327 | ||
328 | static inline u32 c2_convert_access(int acc) | |
329 | { | |
330 | return (acc & IB_ACCESS_REMOTE_WRITE ? C2_ACF_REMOTE_WRITE : 0) | | |
331 | (acc & IB_ACCESS_REMOTE_READ ? C2_ACF_REMOTE_READ : 0) | | |
332 | (acc & IB_ACCESS_LOCAL_WRITE ? C2_ACF_LOCAL_WRITE : 0) | | |
333 | C2_ACF_LOCAL_READ | C2_ACF_WINDOW_BIND; | |
334 | } | |
335 | ||
336 | static struct ib_mr *c2_reg_phys_mr(struct ib_pd *ib_pd, | |
337 | struct ib_phys_buf *buffer_list, | |
338 | int num_phys_buf, int acc, u64 * iova_start) | |
339 | { | |
340 | struct c2_mr *mr; | |
341 | u64 *page_list; | |
342 | u32 total_len; | |
343 | int err, i, j, k, page_shift, pbl_depth; | |
344 | ||
345 | pbl_depth = 0; | |
346 | total_len = 0; | |
347 | ||
348 | page_shift = PAGE_SHIFT; | |
349 | /* | |
350 | * If there is only 1 buffer we assume this could | |
351 | * be a map of all phy mem...use a 32k page_shift. | |
352 | */ | |
353 | if (num_phys_buf == 1) | |
354 | page_shift += 3; | |
355 | ||
356 | for (i = 0; i < num_phys_buf; i++) { | |
357 | ||
358 | if (buffer_list[i].addr & ~PAGE_MASK) { | |
359 | pr_debug("Unaligned Memory Buffer: 0x%x\n", | |
360 | (unsigned int) buffer_list[i].addr); | |
361 | return ERR_PTR(-EINVAL); | |
362 | } | |
363 | ||
364 | if (!buffer_list[i].size) { | |
365 | pr_debug("Invalid Buffer Size\n"); | |
366 | return ERR_PTR(-EINVAL); | |
367 | } | |
368 | ||
369 | total_len += buffer_list[i].size; | |
370 | pbl_depth += ALIGN(buffer_list[i].size, | |
371 | (1 << page_shift)) >> page_shift; | |
372 | } | |
373 | ||
374 | page_list = vmalloc(sizeof(u64) * pbl_depth); | |
375 | if (!page_list) { | |
376 | pr_debug("couldn't vmalloc page_list of size %zd\n", | |
377 | (sizeof(u64) * pbl_depth)); | |
378 | return ERR_PTR(-ENOMEM); | |
379 | } | |
380 | ||
381 | for (i = 0, j = 0; i < num_phys_buf; i++) { | |
382 | ||
383 | int naddrs; | |
384 | ||
385 | naddrs = ALIGN(buffer_list[i].size, | |
386 | (1 << page_shift)) >> page_shift; | |
387 | for (k = 0; k < naddrs; k++) | |
388 | page_list[j++] = (buffer_list[i].addr + | |
389 | (k << page_shift)); | |
390 | } | |
391 | ||
392 | mr = kmalloc(sizeof(*mr), GFP_KERNEL); | |
393 | if (!mr) | |
394 | return ERR_PTR(-ENOMEM); | |
395 | ||
396 | mr->pd = to_c2pd(ib_pd); | |
397 | pr_debug("%s - page shift %d, pbl_depth %d, total_len %u, " | |
398 | "*iova_start %llx, first pa %llx, last pa %llx\n", | |
399 | __FUNCTION__, page_shift, pbl_depth, total_len, | |
400 | *iova_start, page_list[0], page_list[pbl_depth-1]); | |
401 | err = c2_nsmr_register_phys_kern(to_c2dev(ib_pd->device), page_list, | |
402 | (1 << page_shift), pbl_depth, | |
403 | total_len, 0, iova_start, | |
404 | c2_convert_access(acc), mr); | |
405 | vfree(page_list); | |
406 | if (err) { | |
407 | kfree(mr); | |
408 | return ERR_PTR(err); | |
409 | } | |
410 | ||
411 | return &mr->ibmr; | |
412 | } | |
413 | ||
414 | static struct ib_mr *c2_get_dma_mr(struct ib_pd *pd, int acc) | |
415 | { | |
416 | struct ib_phys_buf bl; | |
417 | u64 kva = 0; | |
418 | ||
419 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
420 | ||
421 | /* AMSO1100 limit */ | |
422 | bl.size = 0xffffffff; | |
423 | bl.addr = 0; | |
424 | return c2_reg_phys_mr(pd, &bl, 1, acc, &kva); | |
425 | } | |
426 | ||
427 | static struct ib_mr *c2_reg_user_mr(struct ib_pd *pd, struct ib_umem *region, | |
428 | int acc, struct ib_udata *udata) | |
429 | { | |
430 | u64 *pages; | |
431 | u64 kva = 0; | |
432 | int shift, n, len; | |
433 | int i, j, k; | |
434 | int err = 0; | |
435 | struct ib_umem_chunk *chunk; | |
436 | struct c2_pd *c2pd = to_c2pd(pd); | |
437 | struct c2_mr *c2mr; | |
438 | ||
439 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
440 | shift = ffs(region->page_size) - 1; | |
441 | ||
442 | c2mr = kmalloc(sizeof(*c2mr), GFP_KERNEL); | |
443 | if (!c2mr) | |
444 | return ERR_PTR(-ENOMEM); | |
445 | c2mr->pd = c2pd; | |
446 | ||
447 | n = 0; | |
448 | list_for_each_entry(chunk, ®ion->chunk_list, list) | |
449 | n += chunk->nents; | |
450 | ||
451 | pages = kmalloc(n * sizeof(u64), GFP_KERNEL); | |
452 | if (!pages) { | |
453 | err = -ENOMEM; | |
454 | goto err; | |
455 | } | |
456 | ||
457 | i = 0; | |
458 | list_for_each_entry(chunk, ®ion->chunk_list, list) { | |
459 | for (j = 0; j < chunk->nmap; ++j) { | |
460 | len = sg_dma_len(&chunk->page_list[j]) >> shift; | |
461 | for (k = 0; k < len; ++k) { | |
462 | pages[i++] = | |
463 | sg_dma_address(&chunk->page_list[j]) + | |
464 | (region->page_size * k); | |
465 | } | |
466 | } | |
467 | } | |
468 | ||
469 | kva = (u64)region->virt_base; | |
470 | err = c2_nsmr_register_phys_kern(to_c2dev(pd->device), | |
471 | pages, | |
472 | region->page_size, | |
473 | i, | |
474 | region->length, | |
475 | region->offset, | |
476 | &kva, | |
477 | c2_convert_access(acc), | |
478 | c2mr); | |
479 | kfree(pages); | |
480 | if (err) { | |
481 | kfree(c2mr); | |
482 | return ERR_PTR(err); | |
483 | } | |
484 | return &c2mr->ibmr; | |
485 | ||
486 | err: | |
487 | kfree(c2mr); | |
488 | return ERR_PTR(err); | |
489 | } | |
490 | ||
491 | static int c2_dereg_mr(struct ib_mr *ib_mr) | |
492 | { | |
493 | struct c2_mr *mr = to_c2mr(ib_mr); | |
494 | int err; | |
495 | ||
496 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
497 | ||
498 | err = c2_stag_dealloc(to_c2dev(ib_mr->device), ib_mr->lkey); | |
499 | if (err) | |
500 | pr_debug("c2_stag_dealloc failed: %d\n", err); | |
501 | else | |
502 | kfree(mr); | |
503 | ||
504 | return err; | |
505 | } | |
506 | ||
507 | static ssize_t show_rev(struct class_device *cdev, char *buf) | |
508 | { | |
509 | struct c2_dev *dev = container_of(cdev, struct c2_dev, ibdev.class_dev); | |
510 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
511 | return sprintf(buf, "%x\n", dev->props.hw_ver); | |
512 | } | |
513 | ||
514 | static ssize_t show_fw_ver(struct class_device *cdev, char *buf) | |
515 | { | |
516 | struct c2_dev *dev = container_of(cdev, struct c2_dev, ibdev.class_dev); | |
517 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
518 | return sprintf(buf, "%x.%x.%x\n", | |
519 | (int) (dev->props.fw_ver >> 32), | |
520 | (int) (dev->props.fw_ver >> 16) & 0xffff, | |
521 | (int) (dev->props.fw_ver & 0xffff)); | |
522 | } | |
523 | ||
524 | static ssize_t show_hca(struct class_device *cdev, char *buf) | |
525 | { | |
526 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
527 | return sprintf(buf, "AMSO1100\n"); | |
528 | } | |
529 | ||
530 | static ssize_t show_board(struct class_device *cdev, char *buf) | |
531 | { | |
532 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
533 | return sprintf(buf, "%.*s\n", 32, "AMSO1100 Board ID"); | |
534 | } | |
535 | ||
536 | static CLASS_DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); | |
537 | static CLASS_DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); | |
538 | static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); | |
539 | static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); | |
540 | ||
541 | static struct class_device_attribute *c2_class_attributes[] = { | |
542 | &class_device_attr_hw_rev, | |
543 | &class_device_attr_fw_ver, | |
544 | &class_device_attr_hca_type, | |
545 | &class_device_attr_board_id | |
546 | }; | |
547 | ||
548 | static int c2_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, | |
549 | int attr_mask, struct ib_udata *udata) | |
550 | { | |
551 | int err; | |
552 | ||
553 | err = | |
554 | c2_qp_modify(to_c2dev(ibqp->device), to_c2qp(ibqp), attr, | |
555 | attr_mask); | |
556 | ||
557 | return err; | |
558 | } | |
559 | ||
560 | static int c2_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
561 | { | |
562 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
563 | return -ENOSYS; | |
564 | } | |
565 | ||
566 | static int c2_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
567 | { | |
568 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
569 | return -ENOSYS; | |
570 | } | |
571 | ||
572 | static int c2_process_mad(struct ib_device *ibdev, | |
573 | int mad_flags, | |
574 | u8 port_num, | |
575 | struct ib_wc *in_wc, | |
576 | struct ib_grh *in_grh, | |
577 | struct ib_mad *in_mad, struct ib_mad *out_mad) | |
578 | { | |
579 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
580 | return -ENOSYS; | |
581 | } | |
582 | ||
583 | static int c2_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
584 | { | |
585 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
586 | ||
587 | /* Request a connection */ | |
588 | return c2_llp_connect(cm_id, iw_param); | |
589 | } | |
590 | ||
591 | static int c2_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
592 | { | |
593 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
594 | ||
595 | /* Accept the new connection */ | |
596 | return c2_llp_accept(cm_id, iw_param); | |
597 | } | |
598 | ||
599 | static int c2_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
600 | { | |
601 | int err; | |
602 | ||
603 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
604 | ||
605 | err = c2_llp_reject(cm_id, pdata, pdata_len); | |
606 | return err; | |
607 | } | |
608 | ||
609 | static int c2_service_create(struct iw_cm_id *cm_id, int backlog) | |
610 | { | |
611 | int err; | |
612 | ||
613 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
614 | err = c2_llp_service_create(cm_id, backlog); | |
615 | pr_debug("%s:%u err=%d\n", | |
616 | __FUNCTION__, __LINE__, | |
617 | err); | |
618 | return err; | |
619 | } | |
620 | ||
621 | static int c2_service_destroy(struct iw_cm_id *cm_id) | |
622 | { | |
623 | int err; | |
624 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
625 | ||
626 | err = c2_llp_service_destroy(cm_id); | |
627 | ||
628 | return err; | |
629 | } | |
630 | ||
631 | static int c2_pseudo_up(struct net_device *netdev) | |
632 | { | |
633 | struct in_device *ind; | |
634 | struct c2_dev *c2dev = netdev->priv; | |
635 | ||
636 | ind = in_dev_get(netdev); | |
637 | if (!ind) | |
638 | return 0; | |
639 | ||
640 | pr_debug("adding...\n"); | |
641 | for_ifa(ind) { | |
642 | #ifdef DEBUG | |
643 | u8 *ip = (u8 *) & ifa->ifa_address; | |
644 | ||
645 | pr_debug("%s: %d.%d.%d.%d\n", | |
646 | ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]); | |
647 | #endif | |
648 | c2_add_addr(c2dev, ifa->ifa_address, ifa->ifa_mask); | |
649 | } | |
650 | endfor_ifa(ind); | |
651 | in_dev_put(ind); | |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
656 | static int c2_pseudo_down(struct net_device *netdev) | |
657 | { | |
658 | struct in_device *ind; | |
659 | struct c2_dev *c2dev = netdev->priv; | |
660 | ||
661 | ind = in_dev_get(netdev); | |
662 | if (!ind) | |
663 | return 0; | |
664 | ||
665 | pr_debug("deleting...\n"); | |
666 | for_ifa(ind) { | |
667 | #ifdef DEBUG | |
668 | u8 *ip = (u8 *) & ifa->ifa_address; | |
669 | ||
670 | pr_debug("%s: %d.%d.%d.%d\n", | |
671 | ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]); | |
672 | #endif | |
673 | c2_del_addr(c2dev, ifa->ifa_address, ifa->ifa_mask); | |
674 | } | |
675 | endfor_ifa(ind); | |
676 | in_dev_put(ind); | |
677 | ||
678 | return 0; | |
679 | } | |
680 | ||
681 | static int c2_pseudo_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
682 | { | |
683 | kfree_skb(skb); | |
684 | return NETDEV_TX_OK; | |
685 | } | |
686 | ||
687 | static int c2_pseudo_change_mtu(struct net_device *netdev, int new_mtu) | |
688 | { | |
689 | int ret = 0; | |
690 | ||
691 | if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU) | |
692 | return -EINVAL; | |
693 | ||
694 | netdev->mtu = new_mtu; | |
695 | ||
696 | /* TODO: Tell rnic about new rmda interface mtu */ | |
697 | return ret; | |
698 | } | |
699 | ||
700 | static void setup(struct net_device *netdev) | |
701 | { | |
702 | SET_MODULE_OWNER(netdev); | |
703 | netdev->open = c2_pseudo_up; | |
704 | netdev->stop = c2_pseudo_down; | |
705 | netdev->hard_start_xmit = c2_pseudo_xmit_frame; | |
706 | netdev->get_stats = NULL; | |
707 | netdev->tx_timeout = NULL; | |
708 | netdev->set_mac_address = NULL; | |
709 | netdev->change_mtu = c2_pseudo_change_mtu; | |
710 | netdev->watchdog_timeo = 0; | |
711 | netdev->type = ARPHRD_ETHER; | |
712 | netdev->mtu = 1500; | |
713 | netdev->hard_header_len = ETH_HLEN; | |
714 | netdev->addr_len = ETH_ALEN; | |
715 | netdev->tx_queue_len = 0; | |
716 | netdev->flags |= IFF_NOARP; | |
717 | return; | |
718 | } | |
719 | ||
720 | static struct net_device *c2_pseudo_netdev_init(struct c2_dev *c2dev) | |
721 | { | |
722 | char name[IFNAMSIZ]; | |
723 | struct net_device *netdev; | |
724 | ||
725 | /* change ethxxx to iwxxx */ | |
726 | strcpy(name, "iw"); | |
727 | strcat(name, &c2dev->netdev->name[3]); | |
728 | netdev = alloc_netdev(sizeof(*netdev), name, setup); | |
729 | if (!netdev) { | |
730 | printk(KERN_ERR PFX "%s - etherdev alloc failed", | |
731 | __FUNCTION__); | |
732 | return NULL; | |
733 | } | |
734 | ||
735 | netdev->priv = c2dev; | |
736 | ||
737 | SET_NETDEV_DEV(netdev, &c2dev->pcidev->dev); | |
738 | ||
739 | memcpy_fromio(netdev->dev_addr, c2dev->kva + C2_REGS_RDMA_ENADDR, 6); | |
740 | ||
741 | /* Print out the MAC address */ | |
742 | pr_debug("%s: MAC %02X:%02X:%02X:%02X:%02X:%02X\n", | |
743 | netdev->name, | |
744 | netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2], | |
745 | netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]); | |
746 | ||
747 | #if 0 | |
748 | /* Disable network packets */ | |
749 | netif_stop_queue(netdev); | |
750 | #endif | |
751 | return netdev; | |
752 | } | |
753 | ||
754 | int c2_register_device(struct c2_dev *dev) | |
755 | { | |
756 | int ret; | |
757 | int i; | |
758 | ||
759 | /* Register pseudo network device */ | |
760 | dev->pseudo_netdev = c2_pseudo_netdev_init(dev); | |
761 | if (dev->pseudo_netdev) { | |
762 | ret = register_netdev(dev->pseudo_netdev); | |
763 | if (ret) { | |
764 | printk(KERN_ERR PFX | |
765 | "Unable to register netdev, ret = %d\n", ret); | |
766 | free_netdev(dev->pseudo_netdev); | |
767 | return ret; | |
768 | } | |
769 | } | |
770 | ||
771 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
772 | strlcpy(dev->ibdev.name, "amso%d", IB_DEVICE_NAME_MAX); | |
773 | dev->ibdev.owner = THIS_MODULE; | |
774 | dev->ibdev.uverbs_cmd_mask = | |
775 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
776 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
777 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
778 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
779 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
780 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
781 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
782 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
783 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
784 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | | |
785 | (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | | |
786 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
787 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
788 | (1ull << IB_USER_VERBS_CMD_POLL_CQ) | | |
789 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | | |
790 | (1ull << IB_USER_VERBS_CMD_POST_SEND) | | |
791 | (1ull << IB_USER_VERBS_CMD_POST_RECV); | |
792 | ||
793 | dev->ibdev.node_type = RDMA_NODE_RNIC; | |
794 | memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); | |
795 | memcpy(&dev->ibdev.node_guid, dev->pseudo_netdev->dev_addr, 6); | |
796 | dev->ibdev.phys_port_cnt = 1; | |
797 | dev->ibdev.dma_device = &dev->pcidev->dev; | |
798 | dev->ibdev.class_dev.dev = &dev->pcidev->dev; | |
799 | dev->ibdev.query_device = c2_query_device; | |
800 | dev->ibdev.query_port = c2_query_port; | |
801 | dev->ibdev.modify_port = c2_modify_port; | |
802 | dev->ibdev.query_pkey = c2_query_pkey; | |
803 | dev->ibdev.query_gid = c2_query_gid; | |
804 | dev->ibdev.alloc_ucontext = c2_alloc_ucontext; | |
805 | dev->ibdev.dealloc_ucontext = c2_dealloc_ucontext; | |
806 | dev->ibdev.mmap = c2_mmap_uar; | |
807 | dev->ibdev.alloc_pd = c2_alloc_pd; | |
808 | dev->ibdev.dealloc_pd = c2_dealloc_pd; | |
809 | dev->ibdev.create_ah = c2_ah_create; | |
810 | dev->ibdev.destroy_ah = c2_ah_destroy; | |
811 | dev->ibdev.create_qp = c2_create_qp; | |
812 | dev->ibdev.modify_qp = c2_modify_qp; | |
813 | dev->ibdev.destroy_qp = c2_destroy_qp; | |
814 | dev->ibdev.create_cq = c2_create_cq; | |
815 | dev->ibdev.destroy_cq = c2_destroy_cq; | |
816 | dev->ibdev.poll_cq = c2_poll_cq; | |
817 | dev->ibdev.get_dma_mr = c2_get_dma_mr; | |
818 | dev->ibdev.reg_phys_mr = c2_reg_phys_mr; | |
819 | dev->ibdev.reg_user_mr = c2_reg_user_mr; | |
820 | dev->ibdev.dereg_mr = c2_dereg_mr; | |
821 | ||
822 | dev->ibdev.alloc_fmr = NULL; | |
823 | dev->ibdev.unmap_fmr = NULL; | |
824 | dev->ibdev.dealloc_fmr = NULL; | |
825 | dev->ibdev.map_phys_fmr = NULL; | |
826 | ||
827 | dev->ibdev.attach_mcast = c2_multicast_attach; | |
828 | dev->ibdev.detach_mcast = c2_multicast_detach; | |
829 | dev->ibdev.process_mad = c2_process_mad; | |
830 | ||
831 | dev->ibdev.req_notify_cq = c2_arm_cq; | |
832 | dev->ibdev.post_send = c2_post_send; | |
833 | dev->ibdev.post_recv = c2_post_receive; | |
834 | ||
835 | dev->ibdev.iwcm = kmalloc(sizeof(*dev->ibdev.iwcm), GFP_KERNEL); | |
836 | dev->ibdev.iwcm->add_ref = c2_add_ref; | |
837 | dev->ibdev.iwcm->rem_ref = c2_rem_ref; | |
838 | dev->ibdev.iwcm->get_qp = c2_get_qp; | |
839 | dev->ibdev.iwcm->connect = c2_connect; | |
840 | dev->ibdev.iwcm->accept = c2_accept; | |
841 | dev->ibdev.iwcm->reject = c2_reject; | |
842 | dev->ibdev.iwcm->create_listen = c2_service_create; | |
843 | dev->ibdev.iwcm->destroy_listen = c2_service_destroy; | |
844 | ||
845 | ret = ib_register_device(&dev->ibdev); | |
846 | if (ret) | |
847 | return ret; | |
848 | ||
849 | for (i = 0; i < ARRAY_SIZE(c2_class_attributes); ++i) { | |
850 | ret = class_device_create_file(&dev->ibdev.class_dev, | |
851 | c2_class_attributes[i]); | |
852 | if (ret) { | |
853 | unregister_netdev(dev->pseudo_netdev); | |
854 | free_netdev(dev->pseudo_netdev); | |
855 | ib_unregister_device(&dev->ibdev); | |
856 | return ret; | |
857 | } | |
858 | } | |
859 | ||
860 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
861 | return 0; | |
862 | } | |
863 | ||
864 | void c2_unregister_device(struct c2_dev *dev) | |
865 | { | |
866 | pr_debug("%s:%u\n", __FUNCTION__, __LINE__); | |
867 | unregister_netdev(dev->pseudo_netdev); | |
868 | free_netdev(dev->pseudo_netdev); | |
869 | ib_unregister_device(&dev->ibdev); | |
870 | } |