Commit | Line | Data |
---|---|---|
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> |
5a0e3ad6 | 53 | #include <linux/slab.h> |
f94b533d TT |
54 | |
55 | #include <asm/io.h> | |
56 | #include <asm/irq.h> | |
57 | #include <asm/byteorder.h> | |
58 | ||
59 | #include <rdma/ib_smi.h> | |
f7c6a7b5 | 60 | #include <rdma/ib_umem.h> |
f94b533d TT |
61 | #include <rdma/ib_user_verbs.h> |
62 | #include "c2.h" | |
63 | #include "c2_provider.h" | |
64 | #include "c2_user.h" | |
65 | ||
66 | static int c2_query_device(struct ib_device *ibdev, | |
67 | struct ib_device_attr *props) | |
68 | { | |
69 | struct c2_dev *c2dev = to_c2dev(ibdev); | |
70 | ||
33718363 | 71 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
72 | |
73 | *props = c2dev->props; | |
74 | return 0; | |
75 | } | |
76 | ||
77 | static int c2_query_port(struct ib_device *ibdev, | |
78 | u8 port, struct ib_port_attr *props) | |
79 | { | |
33718363 | 80 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
81 | |
82 | props->max_mtu = IB_MTU_4096; | |
83 | props->lid = 0; | |
84 | props->lmc = 0; | |
85 | props->sm_lid = 0; | |
86 | props->sm_sl = 0; | |
87 | props->state = IB_PORT_ACTIVE; | |
88 | props->phys_state = 0; | |
89 | props->port_cap_flags = | |
90 | IB_PORT_CM_SUP | | |
91 | IB_PORT_REINIT_SUP | | |
92 | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; | |
93 | props->gid_tbl_len = 1; | |
94 | props->pkey_tbl_len = 1; | |
95 | props->qkey_viol_cntr = 0; | |
96 | props->active_width = 1; | |
2e96691c | 97 | props->active_speed = IB_SPEED_SDR; |
f94b533d TT |
98 | |
99 | return 0; | |
100 | } | |
101 | ||
f94b533d TT |
102 | static int c2_query_pkey(struct ib_device *ibdev, |
103 | u8 port, u16 index, u16 * pkey) | |
104 | { | |
33718363 | 105 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
106 | *pkey = 0; |
107 | return 0; | |
108 | } | |
109 | ||
110 | static int c2_query_gid(struct ib_device *ibdev, u8 port, | |
111 | int index, union ib_gid *gid) | |
112 | { | |
113 | struct c2_dev *c2dev = to_c2dev(ibdev); | |
114 | ||
33718363 | 115 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
116 | memset(&(gid->raw[0]), 0, sizeof(gid->raw)); |
117 | memcpy(&(gid->raw[0]), c2dev->pseudo_netdev->dev_addr, 6); | |
118 | ||
119 | return 0; | |
120 | } | |
121 | ||
122 | /* Allocate the user context data structure. This keeps track | |
123 | * of all objects associated with a particular user-mode client. | |
124 | */ | |
125 | static struct ib_ucontext *c2_alloc_ucontext(struct ib_device *ibdev, | |
126 | struct ib_udata *udata) | |
127 | { | |
128 | struct c2_ucontext *context; | |
129 | ||
33718363 | 130 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
131 | context = kmalloc(sizeof(*context), GFP_KERNEL); |
132 | if (!context) | |
133 | return ERR_PTR(-ENOMEM); | |
134 | ||
135 | return &context->ibucontext; | |
136 | } | |
137 | ||
138 | static int c2_dealloc_ucontext(struct ib_ucontext *context) | |
139 | { | |
33718363 | 140 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
141 | kfree(context); |
142 | return 0; | |
143 | } | |
144 | ||
145 | static int c2_mmap_uar(struct ib_ucontext *context, struct vm_area_struct *vma) | |
146 | { | |
33718363 | 147 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
148 | return -ENOSYS; |
149 | } | |
150 | ||
151 | static struct ib_pd *c2_alloc_pd(struct ib_device *ibdev, | |
152 | struct ib_ucontext *context, | |
153 | struct ib_udata *udata) | |
154 | { | |
155 | struct c2_pd *pd; | |
156 | int err; | |
157 | ||
33718363 | 158 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
159 | |
160 | pd = kmalloc(sizeof(*pd), GFP_KERNEL); | |
161 | if (!pd) | |
162 | return ERR_PTR(-ENOMEM); | |
163 | ||
164 | err = c2_pd_alloc(to_c2dev(ibdev), !context, pd); | |
165 | if (err) { | |
166 | kfree(pd); | |
167 | return ERR_PTR(err); | |
168 | } | |
169 | ||
170 | if (context) { | |
171 | if (ib_copy_to_udata(udata, &pd->pd_id, sizeof(__u32))) { | |
172 | c2_pd_free(to_c2dev(ibdev), pd); | |
173 | kfree(pd); | |
174 | return ERR_PTR(-EFAULT); | |
175 | } | |
176 | } | |
177 | ||
178 | return &pd->ibpd; | |
179 | } | |
180 | ||
181 | static int c2_dealloc_pd(struct ib_pd *pd) | |
182 | { | |
33718363 | 183 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
184 | c2_pd_free(to_c2dev(pd->device), to_c2pd(pd)); |
185 | kfree(pd); | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | static struct ib_ah *c2_ah_create(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
191 | { | |
33718363 | 192 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
193 | return ERR_PTR(-ENOSYS); |
194 | } | |
195 | ||
196 | static int c2_ah_destroy(struct ib_ah *ah) | |
197 | { | |
33718363 | 198 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
199 | return -ENOSYS; |
200 | } | |
201 | ||
202 | static void c2_add_ref(struct ib_qp *ibqp) | |
203 | { | |
204 | struct c2_qp *qp; | |
205 | BUG_ON(!ibqp); | |
206 | qp = to_c2qp(ibqp); | |
207 | atomic_inc(&qp->refcount); | |
208 | } | |
209 | ||
210 | static void c2_rem_ref(struct ib_qp *ibqp) | |
211 | { | |
212 | struct c2_qp *qp; | |
213 | BUG_ON(!ibqp); | |
214 | qp = to_c2qp(ibqp); | |
215 | if (atomic_dec_and_test(&qp->refcount)) | |
216 | wake_up(&qp->wait); | |
217 | } | |
218 | ||
219 | struct ib_qp *c2_get_qp(struct ib_device *device, int qpn) | |
220 | { | |
221 | struct c2_dev* c2dev = to_c2dev(device); | |
222 | struct c2_qp *qp; | |
223 | ||
224 | qp = c2_find_qpn(c2dev, qpn); | |
225 | pr_debug("%s Returning QP=%p for QPN=%d, device=%p, refcount=%d\n", | |
33718363 | 226 | __func__, qp, qpn, device, |
f94b533d TT |
227 | (qp?atomic_read(&qp->refcount):0)); |
228 | ||
229 | return (qp?&qp->ibqp:NULL); | |
230 | } | |
231 | ||
232 | static struct ib_qp *c2_create_qp(struct ib_pd *pd, | |
233 | struct ib_qp_init_attr *init_attr, | |
234 | struct ib_udata *udata) | |
235 | { | |
236 | struct c2_qp *qp; | |
237 | int err; | |
238 | ||
33718363 | 239 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d | 240 | |
b846f25a EC |
241 | if (init_attr->create_flags) |
242 | return ERR_PTR(-EINVAL); | |
243 | ||
f94b533d TT |
244 | switch (init_attr->qp_type) { |
245 | case IB_QPT_RC: | |
246 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); | |
247 | if (!qp) { | |
33718363 | 248 | pr_debug("%s: Unable to allocate QP\n", __func__); |
f94b533d TT |
249 | return ERR_PTR(-ENOMEM); |
250 | } | |
251 | spin_lock_init(&qp->lock); | |
252 | if (pd->uobject) { | |
253 | /* userspace specific */ | |
254 | } | |
255 | ||
256 | err = c2_alloc_qp(to_c2dev(pd->device), | |
257 | to_c2pd(pd), init_attr, qp); | |
258 | ||
259 | if (err && pd->uobject) { | |
260 | /* userspace specific */ | |
261 | } | |
262 | ||
263 | break; | |
264 | default: | |
33718363 | 265 | pr_debug("%s: Invalid QP type: %d\n", __func__, |
f94b533d TT |
266 | init_attr->qp_type); |
267 | return ERR_PTR(-EINVAL); | |
f94b533d TT |
268 | } |
269 | ||
270 | if (err) { | |
271 | kfree(qp); | |
272 | return ERR_PTR(err); | |
273 | } | |
274 | ||
275 | return &qp->ibqp; | |
276 | } | |
277 | ||
278 | static int c2_destroy_qp(struct ib_qp *ib_qp) | |
279 | { | |
280 | struct c2_qp *qp = to_c2qp(ib_qp); | |
281 | ||
282 | pr_debug("%s:%u qp=%p,qp->state=%d\n", | |
33718363 | 283 | __func__, __LINE__, ib_qp, qp->state); |
f94b533d TT |
284 | c2_free_qp(to_c2dev(ib_qp->device), qp); |
285 | kfree(qp); | |
286 | return 0; | |
287 | } | |
288 | ||
f4fd0b22 | 289 | static struct ib_cq *c2_create_cq(struct ib_device *ibdev, int entries, int vector, |
f94b533d TT |
290 | struct ib_ucontext *context, |
291 | struct ib_udata *udata) | |
292 | { | |
293 | struct c2_cq *cq; | |
294 | int err; | |
295 | ||
296 | cq = kmalloc(sizeof(*cq), GFP_KERNEL); | |
297 | if (!cq) { | |
33718363 | 298 | pr_debug("%s: Unable to allocate CQ\n", __func__); |
f94b533d TT |
299 | return ERR_PTR(-ENOMEM); |
300 | } | |
301 | ||
302 | err = c2_init_cq(to_c2dev(ibdev), entries, NULL, cq); | |
303 | if (err) { | |
33718363 | 304 | pr_debug("%s: error initializing CQ\n", __func__); |
f94b533d TT |
305 | kfree(cq); |
306 | return ERR_PTR(err); | |
307 | } | |
308 | ||
309 | return &cq->ibcq; | |
310 | } | |
311 | ||
312 | static int c2_destroy_cq(struct ib_cq *ib_cq) | |
313 | { | |
314 | struct c2_cq *cq = to_c2cq(ib_cq); | |
315 | ||
33718363 | 316 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
317 | |
318 | c2_free_cq(to_c2dev(ib_cq->device), cq); | |
319 | kfree(cq); | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
324 | static inline u32 c2_convert_access(int acc) | |
325 | { | |
326 | return (acc & IB_ACCESS_REMOTE_WRITE ? C2_ACF_REMOTE_WRITE : 0) | | |
327 | (acc & IB_ACCESS_REMOTE_READ ? C2_ACF_REMOTE_READ : 0) | | |
328 | (acc & IB_ACCESS_LOCAL_WRITE ? C2_ACF_LOCAL_WRITE : 0) | | |
329 | C2_ACF_LOCAL_READ | C2_ACF_WINDOW_BIND; | |
330 | } | |
331 | ||
332 | static struct ib_mr *c2_reg_phys_mr(struct ib_pd *ib_pd, | |
333 | struct ib_phys_buf *buffer_list, | |
334 | int num_phys_buf, int acc, u64 * iova_start) | |
335 | { | |
336 | struct c2_mr *mr; | |
337 | u64 *page_list; | |
338 | u32 total_len; | |
339 | int err, i, j, k, page_shift, pbl_depth; | |
340 | ||
341 | pbl_depth = 0; | |
342 | total_len = 0; | |
343 | ||
344 | page_shift = PAGE_SHIFT; | |
345 | /* | |
346 | * If there is only 1 buffer we assume this could | |
347 | * be a map of all phy mem...use a 32k page_shift. | |
348 | */ | |
349 | if (num_phys_buf == 1) | |
350 | page_shift += 3; | |
351 | ||
352 | for (i = 0; i < num_phys_buf; i++) { | |
353 | ||
354 | if (buffer_list[i].addr & ~PAGE_MASK) { | |
355 | pr_debug("Unaligned Memory Buffer: 0x%x\n", | |
356 | (unsigned int) buffer_list[i].addr); | |
357 | return ERR_PTR(-EINVAL); | |
358 | } | |
359 | ||
360 | if (!buffer_list[i].size) { | |
361 | pr_debug("Invalid Buffer Size\n"); | |
362 | return ERR_PTR(-EINVAL); | |
363 | } | |
364 | ||
365 | total_len += buffer_list[i].size; | |
366 | pbl_depth += ALIGN(buffer_list[i].size, | |
367 | (1 << page_shift)) >> page_shift; | |
368 | } | |
369 | ||
370 | page_list = vmalloc(sizeof(u64) * pbl_depth); | |
371 | if (!page_list) { | |
372 | pr_debug("couldn't vmalloc page_list of size %zd\n", | |
373 | (sizeof(u64) * pbl_depth)); | |
374 | return ERR_PTR(-ENOMEM); | |
375 | } | |
376 | ||
377 | for (i = 0, j = 0; i < num_phys_buf; i++) { | |
378 | ||
379 | int naddrs; | |
380 | ||
381 | naddrs = ALIGN(buffer_list[i].size, | |
382 | (1 << page_shift)) >> page_shift; | |
383 | for (k = 0; k < naddrs; k++) | |
384 | page_list[j++] = (buffer_list[i].addr + | |
385 | (k << page_shift)); | |
386 | } | |
387 | ||
388 | mr = kmalloc(sizeof(*mr), GFP_KERNEL); | |
ee30cb5b RD |
389 | if (!mr) { |
390 | vfree(page_list); | |
f94b533d | 391 | return ERR_PTR(-ENOMEM); |
ee30cb5b | 392 | } |
f94b533d TT |
393 | |
394 | mr->pd = to_c2pd(ib_pd); | |
f7c6a7b5 | 395 | mr->umem = NULL; |
f94b533d TT |
396 | pr_debug("%s - page shift %d, pbl_depth %d, total_len %u, " |
397 | "*iova_start %llx, first pa %llx, last pa %llx\n", | |
33718363 | 398 | __func__, page_shift, pbl_depth, total_len, |
6edf6023 RD |
399 | (unsigned long long) *iova_start, |
400 | (unsigned long long) page_list[0], | |
401 | (unsigned long long) page_list[pbl_depth-1]); | |
f94b533d TT |
402 | err = c2_nsmr_register_phys_kern(to_c2dev(ib_pd->device), page_list, |
403 | (1 << page_shift), pbl_depth, | |
404 | total_len, 0, iova_start, | |
405 | c2_convert_access(acc), mr); | |
406 | vfree(page_list); | |
407 | if (err) { | |
408 | kfree(mr); | |
409 | return ERR_PTR(err); | |
410 | } | |
411 | ||
412 | return &mr->ibmr; | |
413 | } | |
414 | ||
415 | static struct ib_mr *c2_get_dma_mr(struct ib_pd *pd, int acc) | |
416 | { | |
417 | struct ib_phys_buf bl; | |
418 | u64 kva = 0; | |
419 | ||
33718363 | 420 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
421 | |
422 | /* AMSO1100 limit */ | |
423 | bl.size = 0xffffffff; | |
424 | bl.addr = 0; | |
425 | return c2_reg_phys_mr(pd, &bl, 1, acc, &kva); | |
426 | } | |
427 | ||
f7c6a7b5 RD |
428 | static struct ib_mr *c2_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, |
429 | u64 virt, int acc, struct ib_udata *udata) | |
f94b533d TT |
430 | { |
431 | u64 *pages; | |
432 | u64 kva = 0; | |
433 | int shift, n, len; | |
eeb8461e | 434 | int i, k, entry; |
f94b533d | 435 | int err = 0; |
eeb8461e | 436 | struct scatterlist *sg; |
f94b533d TT |
437 | struct c2_pd *c2pd = to_c2pd(pd); |
438 | struct c2_mr *c2mr; | |
439 | ||
33718363 | 440 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
441 | |
442 | c2mr = kmalloc(sizeof(*c2mr), GFP_KERNEL); | |
443 | if (!c2mr) | |
444 | return ERR_PTR(-ENOMEM); | |
445 | c2mr->pd = c2pd; | |
446 | ||
cb9fbc5c | 447 | c2mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0); |
f7c6a7b5 RD |
448 | if (IS_ERR(c2mr->umem)) { |
449 | err = PTR_ERR(c2mr->umem); | |
450 | kfree(c2mr); | |
451 | return ERR_PTR(err); | |
452 | } | |
453 | ||
454 | shift = ffs(c2mr->umem->page_size) - 1; | |
eeb8461e | 455 | n = c2mr->umem->nmap; |
f94b533d TT |
456 | |
457 | pages = kmalloc(n * sizeof(u64), GFP_KERNEL); | |
458 | if (!pages) { | |
459 | err = -ENOMEM; | |
460 | goto err; | |
461 | } | |
462 | ||
463 | i = 0; | |
eeb8461e YH |
464 | for_each_sg(c2mr->umem->sg_head.sgl, sg, c2mr->umem->nmap, entry) { |
465 | len = sg_dma_len(sg) >> shift; | |
466 | for (k = 0; k < len; ++k) { | |
467 | pages[i++] = | |
468 | sg_dma_address(sg) + | |
469 | (c2mr->umem->page_size * k); | |
f94b533d TT |
470 | } |
471 | } | |
472 | ||
f7c6a7b5 | 473 | kva = virt; |
f94b533d TT |
474 | err = c2_nsmr_register_phys_kern(to_c2dev(pd->device), |
475 | pages, | |
f7c6a7b5 | 476 | c2mr->umem->page_size, |
f94b533d | 477 | i, |
f7c6a7b5 RD |
478 | length, |
479 | c2mr->umem->offset, | |
f94b533d TT |
480 | &kva, |
481 | c2_convert_access(acc), | |
482 | c2mr); | |
483 | kfree(pages); | |
f7c6a7b5 RD |
484 | if (err) |
485 | goto err; | |
f94b533d TT |
486 | return &c2mr->ibmr; |
487 | ||
488 | err: | |
f7c6a7b5 | 489 | ib_umem_release(c2mr->umem); |
f94b533d TT |
490 | kfree(c2mr); |
491 | return ERR_PTR(err); | |
492 | } | |
493 | ||
494 | static int c2_dereg_mr(struct ib_mr *ib_mr) | |
495 | { | |
496 | struct c2_mr *mr = to_c2mr(ib_mr); | |
497 | int err; | |
498 | ||
33718363 | 499 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
500 | |
501 | err = c2_stag_dealloc(to_c2dev(ib_mr->device), ib_mr->lkey); | |
502 | if (err) | |
503 | pr_debug("c2_stag_dealloc failed: %d\n", err); | |
f7c6a7b5 RD |
504 | else { |
505 | if (mr->umem) | |
506 | ib_umem_release(mr->umem); | |
f94b533d | 507 | kfree(mr); |
f7c6a7b5 | 508 | } |
f94b533d TT |
509 | |
510 | return err; | |
511 | } | |
512 | ||
f4e91eb4 TJ |
513 | static ssize_t show_rev(struct device *dev, struct device_attribute *attr, |
514 | char *buf) | |
f94b533d | 515 | { |
f4e91eb4 | 516 | struct c2_dev *c2dev = container_of(dev, struct c2_dev, ibdev.dev); |
33718363 | 517 | pr_debug("%s:%u\n", __func__, __LINE__); |
f4e91eb4 | 518 | return sprintf(buf, "%x\n", c2dev->props.hw_ver); |
f94b533d TT |
519 | } |
520 | ||
f4e91eb4 TJ |
521 | static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, |
522 | char *buf) | |
f94b533d | 523 | { |
f4e91eb4 | 524 | struct c2_dev *c2dev = container_of(dev, struct c2_dev, ibdev.dev); |
33718363 | 525 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d | 526 | return sprintf(buf, "%x.%x.%x\n", |
f4e91eb4 TJ |
527 | (int) (c2dev->props.fw_ver >> 32), |
528 | (int) (c2dev->props.fw_ver >> 16) & 0xffff, | |
529 | (int) (c2dev->props.fw_ver & 0xffff)); | |
f94b533d TT |
530 | } |
531 | ||
f4e91eb4 TJ |
532 | static ssize_t show_hca(struct device *dev, struct device_attribute *attr, |
533 | char *buf) | |
f94b533d | 534 | { |
33718363 | 535 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
536 | return sprintf(buf, "AMSO1100\n"); |
537 | } | |
538 | ||
f4e91eb4 TJ |
539 | static ssize_t show_board(struct device *dev, struct device_attribute *attr, |
540 | char *buf) | |
f94b533d | 541 | { |
33718363 | 542 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
543 | return sprintf(buf, "%.*s\n", 32, "AMSO1100 Board ID"); |
544 | } | |
545 | ||
f4e91eb4 TJ |
546 | static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); |
547 | static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); | |
548 | static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); | |
549 | static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); | |
f94b533d | 550 | |
f4e91eb4 TJ |
551 | static struct device_attribute *c2_dev_attributes[] = { |
552 | &dev_attr_hw_rev, | |
553 | &dev_attr_fw_ver, | |
554 | &dev_attr_hca_type, | |
555 | &dev_attr_board_id | |
f94b533d TT |
556 | }; |
557 | ||
558 | static int c2_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, | |
559 | int attr_mask, struct ib_udata *udata) | |
560 | { | |
561 | int err; | |
562 | ||
563 | err = | |
564 | c2_qp_modify(to_c2dev(ibqp->device), to_c2qp(ibqp), attr, | |
565 | attr_mask); | |
566 | ||
567 | return err; | |
568 | } | |
569 | ||
570 | static int c2_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
571 | { | |
33718363 | 572 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
573 | return -ENOSYS; |
574 | } | |
575 | ||
576 | static int c2_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
577 | { | |
33718363 | 578 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
579 | return -ENOSYS; |
580 | } | |
581 | ||
582 | static int c2_process_mad(struct ib_device *ibdev, | |
583 | int mad_flags, | |
584 | u8 port_num, | |
585 | struct ib_wc *in_wc, | |
586 | struct ib_grh *in_grh, | |
587 | struct ib_mad *in_mad, struct ib_mad *out_mad) | |
588 | { | |
33718363 | 589 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
590 | return -ENOSYS; |
591 | } | |
592 | ||
593 | static int c2_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
594 | { | |
33718363 | 595 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
596 | |
597 | /* Request a connection */ | |
598 | return c2_llp_connect(cm_id, iw_param); | |
599 | } | |
600 | ||
601 | static int c2_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
602 | { | |
33718363 | 603 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
604 | |
605 | /* Accept the new connection */ | |
606 | return c2_llp_accept(cm_id, iw_param); | |
607 | } | |
608 | ||
609 | static int c2_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
610 | { | |
611 | int err; | |
612 | ||
33718363 | 613 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
614 | |
615 | err = c2_llp_reject(cm_id, pdata, pdata_len); | |
616 | return err; | |
617 | } | |
618 | ||
619 | static int c2_service_create(struct iw_cm_id *cm_id, int backlog) | |
620 | { | |
621 | int err; | |
622 | ||
33718363 | 623 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
624 | err = c2_llp_service_create(cm_id, backlog); |
625 | pr_debug("%s:%u err=%d\n", | |
33718363 | 626 | __func__, __LINE__, |
f94b533d TT |
627 | err); |
628 | return err; | |
629 | } | |
630 | ||
631 | static int c2_service_destroy(struct iw_cm_id *cm_id) | |
632 | { | |
633 | int err; | |
33718363 | 634 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
635 | |
636 | err = c2_llp_service_destroy(cm_id); | |
637 | ||
638 | return err; | |
639 | } | |
640 | ||
641 | static int c2_pseudo_up(struct net_device *netdev) | |
642 | { | |
643 | struct in_device *ind; | |
4b40eed7 | 644 | struct c2_dev *c2dev = netdev->ml_priv; |
f94b533d TT |
645 | |
646 | ind = in_dev_get(netdev); | |
647 | if (!ind) | |
648 | return 0; | |
649 | ||
650 | pr_debug("adding...\n"); | |
651 | for_ifa(ind) { | |
652 | #ifdef DEBUG | |
653 | u8 *ip = (u8 *) & ifa->ifa_address; | |
654 | ||
655 | pr_debug("%s: %d.%d.%d.%d\n", | |
656 | ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]); | |
657 | #endif | |
658 | c2_add_addr(c2dev, ifa->ifa_address, ifa->ifa_mask); | |
659 | } | |
660 | endfor_ifa(ind); | |
661 | in_dev_put(ind); | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
666 | static int c2_pseudo_down(struct net_device *netdev) | |
667 | { | |
668 | struct in_device *ind; | |
4b40eed7 | 669 | struct c2_dev *c2dev = netdev->ml_priv; |
f94b533d TT |
670 | |
671 | ind = in_dev_get(netdev); | |
672 | if (!ind) | |
673 | return 0; | |
674 | ||
675 | pr_debug("deleting...\n"); | |
676 | for_ifa(ind) { | |
677 | #ifdef DEBUG | |
678 | u8 *ip = (u8 *) & ifa->ifa_address; | |
679 | ||
680 | pr_debug("%s: %d.%d.%d.%d\n", | |
681 | ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]); | |
682 | #endif | |
683 | c2_del_addr(c2dev, ifa->ifa_address, ifa->ifa_mask); | |
684 | } | |
685 | endfor_ifa(ind); | |
686 | in_dev_put(ind); | |
687 | ||
688 | return 0; | |
689 | } | |
690 | ||
691 | static int c2_pseudo_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
692 | { | |
693 | kfree_skb(skb); | |
694 | return NETDEV_TX_OK; | |
695 | } | |
696 | ||
697 | static int c2_pseudo_change_mtu(struct net_device *netdev, int new_mtu) | |
698 | { | |
f94b533d TT |
699 | if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU) |
700 | return -EINVAL; | |
701 | ||
702 | netdev->mtu = new_mtu; | |
703 | ||
704 | /* TODO: Tell rnic about new rmda interface mtu */ | |
687c75dc | 705 | return 0; |
f94b533d TT |
706 | } |
707 | ||
687c75dc SH |
708 | static const struct net_device_ops c2_pseudo_netdev_ops = { |
709 | .ndo_open = c2_pseudo_up, | |
710 | .ndo_stop = c2_pseudo_down, | |
711 | .ndo_start_xmit = c2_pseudo_xmit_frame, | |
712 | .ndo_change_mtu = c2_pseudo_change_mtu, | |
713 | .ndo_validate_addr = eth_validate_addr, | |
714 | }; | |
715 | ||
f94b533d TT |
716 | static void setup(struct net_device *netdev) |
717 | { | |
687c75dc SH |
718 | netdev->netdev_ops = &c2_pseudo_netdev_ops; |
719 | ||
f94b533d TT |
720 | netdev->watchdog_timeo = 0; |
721 | netdev->type = ARPHRD_ETHER; | |
722 | netdev->mtu = 1500; | |
723 | netdev->hard_header_len = ETH_HLEN; | |
724 | netdev->addr_len = ETH_ALEN; | |
725 | netdev->tx_queue_len = 0; | |
726 | netdev->flags |= IFF_NOARP; | |
f94b533d TT |
727 | } |
728 | ||
729 | static struct net_device *c2_pseudo_netdev_init(struct c2_dev *c2dev) | |
730 | { | |
731 | char name[IFNAMSIZ]; | |
732 | struct net_device *netdev; | |
733 | ||
734 | /* change ethxxx to iwxxx */ | |
735 | strcpy(name, "iw"); | |
736 | strcat(name, &c2dev->netdev->name[3]); | |
c835a677 | 737 | netdev = alloc_netdev(0, name, NET_NAME_UNKNOWN, setup); |
f94b533d TT |
738 | if (!netdev) { |
739 | printk(KERN_ERR PFX "%s - etherdev alloc failed", | |
33718363 | 740 | __func__); |
f94b533d TT |
741 | return NULL; |
742 | } | |
743 | ||
4b40eed7 | 744 | netdev->ml_priv = c2dev; |
f94b533d TT |
745 | |
746 | SET_NETDEV_DEV(netdev, &c2dev->pcidev->dev); | |
747 | ||
748 | memcpy_fromio(netdev->dev_addr, c2dev->kva + C2_REGS_RDMA_ENADDR, 6); | |
749 | ||
750 | /* Print out the MAC address */ | |
2be60533 | 751 | pr_debug("%s: MAC %pM\n", netdev->name, netdev->dev_addr); |
f94b533d TT |
752 | |
753 | #if 0 | |
754 | /* Disable network packets */ | |
755 | netif_stop_queue(netdev); | |
756 | #endif | |
757 | return netdev; | |
758 | } | |
759 | ||
760 | int c2_register_device(struct c2_dev *dev) | |
761 | { | |
2ffcab6a | 762 | int ret = -ENOMEM; |
f94b533d TT |
763 | int i; |
764 | ||
765 | /* Register pseudo network device */ | |
766 | dev->pseudo_netdev = c2_pseudo_netdev_init(dev); | |
2ffcab6a | 767 | if (!dev->pseudo_netdev) |
1493ab40 | 768 | goto out; |
2ffcab6a TT |
769 | |
770 | ret = register_netdev(dev->pseudo_netdev); | |
771 | if (ret) | |
1493ab40 | 772 | goto out_free_netdev; |
f94b533d | 773 | |
33718363 | 774 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
775 | strlcpy(dev->ibdev.name, "amso%d", IB_DEVICE_NAME_MAX); |
776 | dev->ibdev.owner = THIS_MODULE; | |
777 | dev->ibdev.uverbs_cmd_mask = | |
778 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
779 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
780 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
781 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
782 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
783 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
784 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
785 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
786 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
787 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | | |
788 | (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | | |
789 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
790 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
791 | (1ull << IB_USER_VERBS_CMD_POLL_CQ) | | |
792 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | | |
793 | (1ull << IB_USER_VERBS_CMD_POST_SEND) | | |
794 | (1ull << IB_USER_VERBS_CMD_POST_RECV); | |
795 | ||
796 | dev->ibdev.node_type = RDMA_NODE_RNIC; | |
797 | memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); | |
798 | memcpy(&dev->ibdev.node_guid, dev->pseudo_netdev->dev_addr, 6); | |
799 | dev->ibdev.phys_port_cnt = 1; | |
f4fd0b22 | 800 | dev->ibdev.num_comp_vectors = 1; |
f94b533d | 801 | dev->ibdev.dma_device = &dev->pcidev->dev; |
f94b533d TT |
802 | dev->ibdev.query_device = c2_query_device; |
803 | dev->ibdev.query_port = c2_query_port; | |
f94b533d TT |
804 | dev->ibdev.query_pkey = c2_query_pkey; |
805 | dev->ibdev.query_gid = c2_query_gid; | |
806 | dev->ibdev.alloc_ucontext = c2_alloc_ucontext; | |
807 | dev->ibdev.dealloc_ucontext = c2_dealloc_ucontext; | |
808 | dev->ibdev.mmap = c2_mmap_uar; | |
809 | dev->ibdev.alloc_pd = c2_alloc_pd; | |
810 | dev->ibdev.dealloc_pd = c2_dealloc_pd; | |
811 | dev->ibdev.create_ah = c2_ah_create; | |
812 | dev->ibdev.destroy_ah = c2_ah_destroy; | |
813 | dev->ibdev.create_qp = c2_create_qp; | |
814 | dev->ibdev.modify_qp = c2_modify_qp; | |
815 | dev->ibdev.destroy_qp = c2_destroy_qp; | |
816 | dev->ibdev.create_cq = c2_create_cq; | |
817 | dev->ibdev.destroy_cq = c2_destroy_cq; | |
818 | dev->ibdev.poll_cq = c2_poll_cq; | |
819 | dev->ibdev.get_dma_mr = c2_get_dma_mr; | |
820 | dev->ibdev.reg_phys_mr = c2_reg_phys_mr; | |
821 | dev->ibdev.reg_user_mr = c2_reg_user_mr; | |
822 | dev->ibdev.dereg_mr = c2_dereg_mr; | |
823 | ||
824 | dev->ibdev.alloc_fmr = NULL; | |
825 | dev->ibdev.unmap_fmr = NULL; | |
826 | dev->ibdev.dealloc_fmr = NULL; | |
827 | dev->ibdev.map_phys_fmr = NULL; | |
828 | ||
829 | dev->ibdev.attach_mcast = c2_multicast_attach; | |
830 | dev->ibdev.detach_mcast = c2_multicast_detach; | |
831 | dev->ibdev.process_mad = c2_process_mad; | |
832 | ||
833 | dev->ibdev.req_notify_cq = c2_arm_cq; | |
834 | dev->ibdev.post_send = c2_post_send; | |
835 | dev->ibdev.post_recv = c2_post_receive; | |
836 | ||
837 | dev->ibdev.iwcm = kmalloc(sizeof(*dev->ibdev.iwcm), GFP_KERNEL); | |
1493ab40 RK |
838 | if (dev->ibdev.iwcm == NULL) { |
839 | ret = -ENOMEM; | |
840 | goto out_unregister_netdev; | |
841 | } | |
f94b533d TT |
842 | dev->ibdev.iwcm->add_ref = c2_add_ref; |
843 | dev->ibdev.iwcm->rem_ref = c2_rem_ref; | |
844 | dev->ibdev.iwcm->get_qp = c2_get_qp; | |
845 | dev->ibdev.iwcm->connect = c2_connect; | |
846 | dev->ibdev.iwcm->accept = c2_accept; | |
847 | dev->ibdev.iwcm->reject = c2_reject; | |
848 | dev->ibdev.iwcm->create_listen = c2_service_create; | |
849 | dev->ibdev.iwcm->destroy_listen = c2_service_destroy; | |
850 | ||
9a6edb60 | 851 | ret = ib_register_device(&dev->ibdev, NULL); |
f94b533d | 852 | if (ret) |
1493ab40 | 853 | goto out_free_iwcm; |
f94b533d | 854 | |
f4e91eb4 TJ |
855 | for (i = 0; i < ARRAY_SIZE(c2_dev_attributes); ++i) { |
856 | ret = device_create_file(&dev->ibdev.dev, | |
857 | c2_dev_attributes[i]); | |
2ffcab6a | 858 | if (ret) |
1493ab40 | 859 | goto out_unregister_ibdev; |
f94b533d | 860 | } |
1493ab40 | 861 | goto out; |
f94b533d | 862 | |
1493ab40 | 863 | out_unregister_ibdev: |
2ffcab6a | 864 | ib_unregister_device(&dev->ibdev); |
1493ab40 RK |
865 | out_free_iwcm: |
866 | kfree(dev->ibdev.iwcm); | |
867 | out_unregister_netdev: | |
2ffcab6a | 868 | unregister_netdev(dev->pseudo_netdev); |
1493ab40 | 869 | out_free_netdev: |
2ffcab6a | 870 | free_netdev(dev->pseudo_netdev); |
1493ab40 | 871 | out: |
33718363 | 872 | pr_debug("%s:%u ret=%d\n", __func__, __LINE__, ret); |
2ffcab6a | 873 | return ret; |
f94b533d TT |
874 | } |
875 | ||
876 | void c2_unregister_device(struct c2_dev *dev) | |
877 | { | |
33718363 | 878 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
879 | unregister_netdev(dev->pseudo_netdev); |
880 | free_netdev(dev->pseudo_netdev); | |
881 | ib_unregister_device(&dev->ibdev); | |
882 | } |