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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> | |
f7c6a7b5 | 59 | #include <rdma/ib_umem.h> |
f94b533d TT |
60 | #include <rdma/ib_user_verbs.h> |
61 | #include "c2.h" | |
62 | #include "c2_provider.h" | |
63 | #include "c2_user.h" | |
64 | ||
65 | static int c2_query_device(struct ib_device *ibdev, | |
66 | struct ib_device_attr *props) | |
67 | { | |
68 | struct c2_dev *c2dev = to_c2dev(ibdev); | |
69 | ||
33718363 | 70 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
71 | |
72 | *props = c2dev->props; | |
73 | return 0; | |
74 | } | |
75 | ||
76 | static int c2_query_port(struct ib_device *ibdev, | |
77 | u8 port, struct ib_port_attr *props) | |
78 | { | |
33718363 | 79 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
80 | |
81 | props->max_mtu = IB_MTU_4096; | |
82 | props->lid = 0; | |
83 | props->lmc = 0; | |
84 | props->sm_lid = 0; | |
85 | props->sm_sl = 0; | |
86 | props->state = IB_PORT_ACTIVE; | |
87 | props->phys_state = 0; | |
88 | props->port_cap_flags = | |
89 | IB_PORT_CM_SUP | | |
90 | IB_PORT_REINIT_SUP | | |
91 | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; | |
92 | props->gid_tbl_len = 1; | |
93 | props->pkey_tbl_len = 1; | |
94 | props->qkey_viol_cntr = 0; | |
95 | props->active_width = 1; | |
96 | props->active_speed = 1; | |
97 | ||
98 | return 0; | |
99 | } | |
100 | ||
101 | static int c2_modify_port(struct ib_device *ibdev, | |
102 | u8 port, int port_modify_mask, | |
103 | struct ib_port_modify *props) | |
104 | { | |
33718363 | 105 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
106 | return 0; |
107 | } | |
108 | ||
109 | static int c2_query_pkey(struct ib_device *ibdev, | |
110 | u8 port, u16 index, u16 * pkey) | |
111 | { | |
33718363 | 112 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
113 | *pkey = 0; |
114 | return 0; | |
115 | } | |
116 | ||
117 | static int c2_query_gid(struct ib_device *ibdev, u8 port, | |
118 | int index, union ib_gid *gid) | |
119 | { | |
120 | struct c2_dev *c2dev = to_c2dev(ibdev); | |
121 | ||
33718363 | 122 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
123 | memset(&(gid->raw[0]), 0, sizeof(gid->raw)); |
124 | memcpy(&(gid->raw[0]), c2dev->pseudo_netdev->dev_addr, 6); | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
129 | /* Allocate the user context data structure. This keeps track | |
130 | * of all objects associated with a particular user-mode client. | |
131 | */ | |
132 | static struct ib_ucontext *c2_alloc_ucontext(struct ib_device *ibdev, | |
133 | struct ib_udata *udata) | |
134 | { | |
135 | struct c2_ucontext *context; | |
136 | ||
33718363 | 137 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
138 | context = kmalloc(sizeof(*context), GFP_KERNEL); |
139 | if (!context) | |
140 | return ERR_PTR(-ENOMEM); | |
141 | ||
142 | return &context->ibucontext; | |
143 | } | |
144 | ||
145 | static int c2_dealloc_ucontext(struct ib_ucontext *context) | |
146 | { | |
33718363 | 147 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
148 | kfree(context); |
149 | return 0; | |
150 | } | |
151 | ||
152 | static int c2_mmap_uar(struct ib_ucontext *context, struct vm_area_struct *vma) | |
153 | { | |
33718363 | 154 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
155 | return -ENOSYS; |
156 | } | |
157 | ||
158 | static struct ib_pd *c2_alloc_pd(struct ib_device *ibdev, | |
159 | struct ib_ucontext *context, | |
160 | struct ib_udata *udata) | |
161 | { | |
162 | struct c2_pd *pd; | |
163 | int err; | |
164 | ||
33718363 | 165 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
166 | |
167 | pd = kmalloc(sizeof(*pd), GFP_KERNEL); | |
168 | if (!pd) | |
169 | return ERR_PTR(-ENOMEM); | |
170 | ||
171 | err = c2_pd_alloc(to_c2dev(ibdev), !context, pd); | |
172 | if (err) { | |
173 | kfree(pd); | |
174 | return ERR_PTR(err); | |
175 | } | |
176 | ||
177 | if (context) { | |
178 | if (ib_copy_to_udata(udata, &pd->pd_id, sizeof(__u32))) { | |
179 | c2_pd_free(to_c2dev(ibdev), pd); | |
180 | kfree(pd); | |
181 | return ERR_PTR(-EFAULT); | |
182 | } | |
183 | } | |
184 | ||
185 | return &pd->ibpd; | |
186 | } | |
187 | ||
188 | static int c2_dealloc_pd(struct ib_pd *pd) | |
189 | { | |
33718363 | 190 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
191 | c2_pd_free(to_c2dev(pd->device), to_c2pd(pd)); |
192 | kfree(pd); | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | static struct ib_ah *c2_ah_create(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
198 | { | |
33718363 | 199 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
200 | return ERR_PTR(-ENOSYS); |
201 | } | |
202 | ||
203 | static int c2_ah_destroy(struct ib_ah *ah) | |
204 | { | |
33718363 | 205 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
206 | return -ENOSYS; |
207 | } | |
208 | ||
209 | static void c2_add_ref(struct ib_qp *ibqp) | |
210 | { | |
211 | struct c2_qp *qp; | |
212 | BUG_ON(!ibqp); | |
213 | qp = to_c2qp(ibqp); | |
214 | atomic_inc(&qp->refcount); | |
215 | } | |
216 | ||
217 | static void c2_rem_ref(struct ib_qp *ibqp) | |
218 | { | |
219 | struct c2_qp *qp; | |
220 | BUG_ON(!ibqp); | |
221 | qp = to_c2qp(ibqp); | |
222 | if (atomic_dec_and_test(&qp->refcount)) | |
223 | wake_up(&qp->wait); | |
224 | } | |
225 | ||
226 | struct ib_qp *c2_get_qp(struct ib_device *device, int qpn) | |
227 | { | |
228 | struct c2_dev* c2dev = to_c2dev(device); | |
229 | struct c2_qp *qp; | |
230 | ||
231 | qp = c2_find_qpn(c2dev, qpn); | |
232 | pr_debug("%s Returning QP=%p for QPN=%d, device=%p, refcount=%d\n", | |
33718363 | 233 | __func__, qp, qpn, device, |
f94b533d TT |
234 | (qp?atomic_read(&qp->refcount):0)); |
235 | ||
236 | return (qp?&qp->ibqp:NULL); | |
237 | } | |
238 | ||
239 | static struct ib_qp *c2_create_qp(struct ib_pd *pd, | |
240 | struct ib_qp_init_attr *init_attr, | |
241 | struct ib_udata *udata) | |
242 | { | |
243 | struct c2_qp *qp; | |
244 | int err; | |
245 | ||
33718363 | 246 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d | 247 | |
b846f25a EC |
248 | if (init_attr->create_flags) |
249 | return ERR_PTR(-EINVAL); | |
250 | ||
f94b533d TT |
251 | switch (init_attr->qp_type) { |
252 | case IB_QPT_RC: | |
253 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); | |
254 | if (!qp) { | |
33718363 | 255 | pr_debug("%s: Unable to allocate QP\n", __func__); |
f94b533d TT |
256 | return ERR_PTR(-ENOMEM); |
257 | } | |
258 | spin_lock_init(&qp->lock); | |
259 | if (pd->uobject) { | |
260 | /* userspace specific */ | |
261 | } | |
262 | ||
263 | err = c2_alloc_qp(to_c2dev(pd->device), | |
264 | to_c2pd(pd), init_attr, qp); | |
265 | ||
266 | if (err && pd->uobject) { | |
267 | /* userspace specific */ | |
268 | } | |
269 | ||
270 | break; | |
271 | default: | |
33718363 | 272 | pr_debug("%s: Invalid QP type: %d\n", __func__, |
f94b533d TT |
273 | init_attr->qp_type); |
274 | return ERR_PTR(-EINVAL); | |
275 | break; | |
276 | } | |
277 | ||
278 | if (err) { | |
279 | kfree(qp); | |
280 | return ERR_PTR(err); | |
281 | } | |
282 | ||
283 | return &qp->ibqp; | |
284 | } | |
285 | ||
286 | static int c2_destroy_qp(struct ib_qp *ib_qp) | |
287 | { | |
288 | struct c2_qp *qp = to_c2qp(ib_qp); | |
289 | ||
290 | pr_debug("%s:%u qp=%p,qp->state=%d\n", | |
33718363 | 291 | __func__, __LINE__, ib_qp, qp->state); |
f94b533d TT |
292 | c2_free_qp(to_c2dev(ib_qp->device), qp); |
293 | kfree(qp); | |
294 | return 0; | |
295 | } | |
296 | ||
f4fd0b22 | 297 | static struct ib_cq *c2_create_cq(struct ib_device *ibdev, int entries, int vector, |
f94b533d TT |
298 | struct ib_ucontext *context, |
299 | struct ib_udata *udata) | |
300 | { | |
301 | struct c2_cq *cq; | |
302 | int err; | |
303 | ||
304 | cq = kmalloc(sizeof(*cq), GFP_KERNEL); | |
305 | if (!cq) { | |
33718363 | 306 | pr_debug("%s: Unable to allocate CQ\n", __func__); |
f94b533d TT |
307 | return ERR_PTR(-ENOMEM); |
308 | } | |
309 | ||
310 | err = c2_init_cq(to_c2dev(ibdev), entries, NULL, cq); | |
311 | if (err) { | |
33718363 | 312 | pr_debug("%s: error initializing CQ\n", __func__); |
f94b533d TT |
313 | kfree(cq); |
314 | return ERR_PTR(err); | |
315 | } | |
316 | ||
317 | return &cq->ibcq; | |
318 | } | |
319 | ||
320 | static int c2_destroy_cq(struct ib_cq *ib_cq) | |
321 | { | |
322 | struct c2_cq *cq = to_c2cq(ib_cq); | |
323 | ||
33718363 | 324 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
325 | |
326 | c2_free_cq(to_c2dev(ib_cq->device), cq); | |
327 | kfree(cq); | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
332 | static inline u32 c2_convert_access(int acc) | |
333 | { | |
334 | return (acc & IB_ACCESS_REMOTE_WRITE ? C2_ACF_REMOTE_WRITE : 0) | | |
335 | (acc & IB_ACCESS_REMOTE_READ ? C2_ACF_REMOTE_READ : 0) | | |
336 | (acc & IB_ACCESS_LOCAL_WRITE ? C2_ACF_LOCAL_WRITE : 0) | | |
337 | C2_ACF_LOCAL_READ | C2_ACF_WINDOW_BIND; | |
338 | } | |
339 | ||
340 | static struct ib_mr *c2_reg_phys_mr(struct ib_pd *ib_pd, | |
341 | struct ib_phys_buf *buffer_list, | |
342 | int num_phys_buf, int acc, u64 * iova_start) | |
343 | { | |
344 | struct c2_mr *mr; | |
345 | u64 *page_list; | |
346 | u32 total_len; | |
347 | int err, i, j, k, page_shift, pbl_depth; | |
348 | ||
349 | pbl_depth = 0; | |
350 | total_len = 0; | |
351 | ||
352 | page_shift = PAGE_SHIFT; | |
353 | /* | |
354 | * If there is only 1 buffer we assume this could | |
355 | * be a map of all phy mem...use a 32k page_shift. | |
356 | */ | |
357 | if (num_phys_buf == 1) | |
358 | page_shift += 3; | |
359 | ||
360 | for (i = 0; i < num_phys_buf; i++) { | |
361 | ||
362 | if (buffer_list[i].addr & ~PAGE_MASK) { | |
363 | pr_debug("Unaligned Memory Buffer: 0x%x\n", | |
364 | (unsigned int) buffer_list[i].addr); | |
365 | return ERR_PTR(-EINVAL); | |
366 | } | |
367 | ||
368 | if (!buffer_list[i].size) { | |
369 | pr_debug("Invalid Buffer Size\n"); | |
370 | return ERR_PTR(-EINVAL); | |
371 | } | |
372 | ||
373 | total_len += buffer_list[i].size; | |
374 | pbl_depth += ALIGN(buffer_list[i].size, | |
375 | (1 << page_shift)) >> page_shift; | |
376 | } | |
377 | ||
378 | page_list = vmalloc(sizeof(u64) * pbl_depth); | |
379 | if (!page_list) { | |
380 | pr_debug("couldn't vmalloc page_list of size %zd\n", | |
381 | (sizeof(u64) * pbl_depth)); | |
382 | return ERR_PTR(-ENOMEM); | |
383 | } | |
384 | ||
385 | for (i = 0, j = 0; i < num_phys_buf; i++) { | |
386 | ||
387 | int naddrs; | |
388 | ||
389 | naddrs = ALIGN(buffer_list[i].size, | |
390 | (1 << page_shift)) >> page_shift; | |
391 | for (k = 0; k < naddrs; k++) | |
392 | page_list[j++] = (buffer_list[i].addr + | |
393 | (k << page_shift)); | |
394 | } | |
395 | ||
396 | mr = kmalloc(sizeof(*mr), GFP_KERNEL); | |
ee30cb5b RD |
397 | if (!mr) { |
398 | vfree(page_list); | |
f94b533d | 399 | return ERR_PTR(-ENOMEM); |
ee30cb5b | 400 | } |
f94b533d TT |
401 | |
402 | mr->pd = to_c2pd(ib_pd); | |
f7c6a7b5 | 403 | mr->umem = NULL; |
f94b533d TT |
404 | pr_debug("%s - page shift %d, pbl_depth %d, total_len %u, " |
405 | "*iova_start %llx, first pa %llx, last pa %llx\n", | |
33718363 | 406 | __func__, page_shift, pbl_depth, total_len, |
6edf6023 RD |
407 | (unsigned long long) *iova_start, |
408 | (unsigned long long) page_list[0], | |
409 | (unsigned long long) page_list[pbl_depth-1]); | |
f94b533d TT |
410 | err = c2_nsmr_register_phys_kern(to_c2dev(ib_pd->device), page_list, |
411 | (1 << page_shift), pbl_depth, | |
412 | total_len, 0, iova_start, | |
413 | c2_convert_access(acc), mr); | |
414 | vfree(page_list); | |
415 | if (err) { | |
416 | kfree(mr); | |
417 | return ERR_PTR(err); | |
418 | } | |
419 | ||
420 | return &mr->ibmr; | |
421 | } | |
422 | ||
423 | static struct ib_mr *c2_get_dma_mr(struct ib_pd *pd, int acc) | |
424 | { | |
425 | struct ib_phys_buf bl; | |
426 | u64 kva = 0; | |
427 | ||
33718363 | 428 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
429 | |
430 | /* AMSO1100 limit */ | |
431 | bl.size = 0xffffffff; | |
432 | bl.addr = 0; | |
433 | return c2_reg_phys_mr(pd, &bl, 1, acc, &kva); | |
434 | } | |
435 | ||
f7c6a7b5 RD |
436 | static struct ib_mr *c2_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, |
437 | u64 virt, int acc, struct ib_udata *udata) | |
f94b533d TT |
438 | { |
439 | u64 *pages; | |
440 | u64 kva = 0; | |
441 | int shift, n, len; | |
442 | int i, j, k; | |
443 | int err = 0; | |
444 | struct ib_umem_chunk *chunk; | |
445 | struct c2_pd *c2pd = to_c2pd(pd); | |
446 | struct c2_mr *c2mr; | |
447 | ||
33718363 | 448 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
449 | |
450 | c2mr = kmalloc(sizeof(*c2mr), GFP_KERNEL); | |
451 | if (!c2mr) | |
452 | return ERR_PTR(-ENOMEM); | |
453 | c2mr->pd = c2pd; | |
454 | ||
f7c6a7b5 RD |
455 | c2mr->umem = ib_umem_get(pd->uobject->context, start, length, acc); |
456 | if (IS_ERR(c2mr->umem)) { | |
457 | err = PTR_ERR(c2mr->umem); | |
458 | kfree(c2mr); | |
459 | return ERR_PTR(err); | |
460 | } | |
461 | ||
462 | shift = ffs(c2mr->umem->page_size) - 1; | |
463 | ||
f94b533d | 464 | n = 0; |
f7c6a7b5 | 465 | list_for_each_entry(chunk, &c2mr->umem->chunk_list, list) |
f94b533d TT |
466 | n += chunk->nents; |
467 | ||
468 | pages = kmalloc(n * sizeof(u64), GFP_KERNEL); | |
469 | if (!pages) { | |
470 | err = -ENOMEM; | |
471 | goto err; | |
472 | } | |
473 | ||
474 | i = 0; | |
f7c6a7b5 | 475 | list_for_each_entry(chunk, &c2mr->umem->chunk_list, list) { |
f94b533d TT |
476 | for (j = 0; j < chunk->nmap; ++j) { |
477 | len = sg_dma_len(&chunk->page_list[j]) >> shift; | |
478 | for (k = 0; k < len; ++k) { | |
479 | pages[i++] = | |
480 | sg_dma_address(&chunk->page_list[j]) + | |
f7c6a7b5 | 481 | (c2mr->umem->page_size * k); |
f94b533d TT |
482 | } |
483 | } | |
484 | } | |
485 | ||
f7c6a7b5 | 486 | kva = virt; |
f94b533d TT |
487 | err = c2_nsmr_register_phys_kern(to_c2dev(pd->device), |
488 | pages, | |
f7c6a7b5 | 489 | c2mr->umem->page_size, |
f94b533d | 490 | i, |
f7c6a7b5 RD |
491 | length, |
492 | c2mr->umem->offset, | |
f94b533d TT |
493 | &kva, |
494 | c2_convert_access(acc), | |
495 | c2mr); | |
496 | kfree(pages); | |
f7c6a7b5 RD |
497 | if (err) |
498 | goto err; | |
f94b533d TT |
499 | return &c2mr->ibmr; |
500 | ||
501 | err: | |
f7c6a7b5 | 502 | ib_umem_release(c2mr->umem); |
f94b533d TT |
503 | kfree(c2mr); |
504 | return ERR_PTR(err); | |
505 | } | |
506 | ||
507 | static int c2_dereg_mr(struct ib_mr *ib_mr) | |
508 | { | |
509 | struct c2_mr *mr = to_c2mr(ib_mr); | |
510 | int err; | |
511 | ||
33718363 | 512 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
513 | |
514 | err = c2_stag_dealloc(to_c2dev(ib_mr->device), ib_mr->lkey); | |
515 | if (err) | |
516 | pr_debug("c2_stag_dealloc failed: %d\n", err); | |
f7c6a7b5 RD |
517 | else { |
518 | if (mr->umem) | |
519 | ib_umem_release(mr->umem); | |
f94b533d | 520 | kfree(mr); |
f7c6a7b5 | 521 | } |
f94b533d TT |
522 | |
523 | return err; | |
524 | } | |
525 | ||
f4e91eb4 TJ |
526 | static ssize_t show_rev(struct device *dev, struct device_attribute *attr, |
527 | char *buf) | |
f94b533d | 528 | { |
f4e91eb4 | 529 | struct c2_dev *c2dev = container_of(dev, struct c2_dev, ibdev.dev); |
33718363 | 530 | pr_debug("%s:%u\n", __func__, __LINE__); |
f4e91eb4 | 531 | return sprintf(buf, "%x\n", c2dev->props.hw_ver); |
f94b533d TT |
532 | } |
533 | ||
f4e91eb4 TJ |
534 | static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, |
535 | char *buf) | |
f94b533d | 536 | { |
f4e91eb4 | 537 | struct c2_dev *c2dev = container_of(dev, struct c2_dev, ibdev.dev); |
33718363 | 538 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d | 539 | return sprintf(buf, "%x.%x.%x\n", |
f4e91eb4 TJ |
540 | (int) (c2dev->props.fw_ver >> 32), |
541 | (int) (c2dev->props.fw_ver >> 16) & 0xffff, | |
542 | (int) (c2dev->props.fw_ver & 0xffff)); | |
f94b533d TT |
543 | } |
544 | ||
f4e91eb4 TJ |
545 | static ssize_t show_hca(struct device *dev, struct device_attribute *attr, |
546 | char *buf) | |
f94b533d | 547 | { |
33718363 | 548 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
549 | return sprintf(buf, "AMSO1100\n"); |
550 | } | |
551 | ||
f4e91eb4 TJ |
552 | static ssize_t show_board(struct device *dev, struct device_attribute *attr, |
553 | char *buf) | |
f94b533d | 554 | { |
33718363 | 555 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
556 | return sprintf(buf, "%.*s\n", 32, "AMSO1100 Board ID"); |
557 | } | |
558 | ||
f4e91eb4 TJ |
559 | static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); |
560 | static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); | |
561 | static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); | |
562 | static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); | |
f94b533d | 563 | |
f4e91eb4 TJ |
564 | static struct device_attribute *c2_dev_attributes[] = { |
565 | &dev_attr_hw_rev, | |
566 | &dev_attr_fw_ver, | |
567 | &dev_attr_hca_type, | |
568 | &dev_attr_board_id | |
f94b533d TT |
569 | }; |
570 | ||
571 | static int c2_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, | |
572 | int attr_mask, struct ib_udata *udata) | |
573 | { | |
574 | int err; | |
575 | ||
576 | err = | |
577 | c2_qp_modify(to_c2dev(ibqp->device), to_c2qp(ibqp), attr, | |
578 | attr_mask); | |
579 | ||
580 | return err; | |
581 | } | |
582 | ||
583 | static int c2_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
584 | { | |
33718363 | 585 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
586 | return -ENOSYS; |
587 | } | |
588 | ||
589 | static int c2_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
590 | { | |
33718363 | 591 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
592 | return -ENOSYS; |
593 | } | |
594 | ||
595 | static int c2_process_mad(struct ib_device *ibdev, | |
596 | int mad_flags, | |
597 | u8 port_num, | |
598 | struct ib_wc *in_wc, | |
599 | struct ib_grh *in_grh, | |
600 | struct ib_mad *in_mad, struct ib_mad *out_mad) | |
601 | { | |
33718363 | 602 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
603 | return -ENOSYS; |
604 | } | |
605 | ||
606 | static int c2_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
607 | { | |
33718363 | 608 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
609 | |
610 | /* Request a connection */ | |
611 | return c2_llp_connect(cm_id, iw_param); | |
612 | } | |
613 | ||
614 | static int c2_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
615 | { | |
33718363 | 616 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
617 | |
618 | /* Accept the new connection */ | |
619 | return c2_llp_accept(cm_id, iw_param); | |
620 | } | |
621 | ||
622 | static int c2_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
623 | { | |
624 | int err; | |
625 | ||
33718363 | 626 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
627 | |
628 | err = c2_llp_reject(cm_id, pdata, pdata_len); | |
629 | return err; | |
630 | } | |
631 | ||
632 | static int c2_service_create(struct iw_cm_id *cm_id, int backlog) | |
633 | { | |
634 | int err; | |
635 | ||
33718363 | 636 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
637 | err = c2_llp_service_create(cm_id, backlog); |
638 | pr_debug("%s:%u err=%d\n", | |
33718363 | 639 | __func__, __LINE__, |
f94b533d TT |
640 | err); |
641 | return err; | |
642 | } | |
643 | ||
644 | static int c2_service_destroy(struct iw_cm_id *cm_id) | |
645 | { | |
646 | int err; | |
33718363 | 647 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
648 | |
649 | err = c2_llp_service_destroy(cm_id); | |
650 | ||
651 | return err; | |
652 | } | |
653 | ||
654 | static int c2_pseudo_up(struct net_device *netdev) | |
655 | { | |
656 | struct in_device *ind; | |
657 | struct c2_dev *c2dev = netdev->priv; | |
658 | ||
659 | ind = in_dev_get(netdev); | |
660 | if (!ind) | |
661 | return 0; | |
662 | ||
663 | pr_debug("adding...\n"); | |
664 | for_ifa(ind) { | |
665 | #ifdef DEBUG | |
666 | u8 *ip = (u8 *) & ifa->ifa_address; | |
667 | ||
668 | pr_debug("%s: %d.%d.%d.%d\n", | |
669 | ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]); | |
670 | #endif | |
671 | c2_add_addr(c2dev, ifa->ifa_address, ifa->ifa_mask); | |
672 | } | |
673 | endfor_ifa(ind); | |
674 | in_dev_put(ind); | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
679 | static int c2_pseudo_down(struct net_device *netdev) | |
680 | { | |
681 | struct in_device *ind; | |
682 | struct c2_dev *c2dev = netdev->priv; | |
683 | ||
684 | ind = in_dev_get(netdev); | |
685 | if (!ind) | |
686 | return 0; | |
687 | ||
688 | pr_debug("deleting...\n"); | |
689 | for_ifa(ind) { | |
690 | #ifdef DEBUG | |
691 | u8 *ip = (u8 *) & ifa->ifa_address; | |
692 | ||
693 | pr_debug("%s: %d.%d.%d.%d\n", | |
694 | ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]); | |
695 | #endif | |
696 | c2_del_addr(c2dev, ifa->ifa_address, ifa->ifa_mask); | |
697 | } | |
698 | endfor_ifa(ind); | |
699 | in_dev_put(ind); | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
704 | static int c2_pseudo_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
705 | { | |
706 | kfree_skb(skb); | |
707 | return NETDEV_TX_OK; | |
708 | } | |
709 | ||
710 | static int c2_pseudo_change_mtu(struct net_device *netdev, int new_mtu) | |
711 | { | |
712 | int ret = 0; | |
713 | ||
714 | if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU) | |
715 | return -EINVAL; | |
716 | ||
717 | netdev->mtu = new_mtu; | |
718 | ||
719 | /* TODO: Tell rnic about new rmda interface mtu */ | |
720 | return ret; | |
721 | } | |
722 | ||
723 | static void setup(struct net_device *netdev) | |
724 | { | |
f94b533d TT |
725 | netdev->open = c2_pseudo_up; |
726 | netdev->stop = c2_pseudo_down; | |
727 | netdev->hard_start_xmit = c2_pseudo_xmit_frame; | |
728 | netdev->get_stats = NULL; | |
729 | netdev->tx_timeout = NULL; | |
730 | netdev->set_mac_address = NULL; | |
731 | netdev->change_mtu = c2_pseudo_change_mtu; | |
732 | netdev->watchdog_timeo = 0; | |
733 | netdev->type = ARPHRD_ETHER; | |
734 | netdev->mtu = 1500; | |
735 | netdev->hard_header_len = ETH_HLEN; | |
736 | netdev->addr_len = ETH_ALEN; | |
737 | netdev->tx_queue_len = 0; | |
738 | netdev->flags |= IFF_NOARP; | |
739 | return; | |
740 | } | |
741 | ||
742 | static struct net_device *c2_pseudo_netdev_init(struct c2_dev *c2dev) | |
743 | { | |
744 | char name[IFNAMSIZ]; | |
745 | struct net_device *netdev; | |
746 | ||
747 | /* change ethxxx to iwxxx */ | |
748 | strcpy(name, "iw"); | |
749 | strcat(name, &c2dev->netdev->name[3]); | |
750 | netdev = alloc_netdev(sizeof(*netdev), name, setup); | |
751 | if (!netdev) { | |
752 | printk(KERN_ERR PFX "%s - etherdev alloc failed", | |
33718363 | 753 | __func__); |
f94b533d TT |
754 | return NULL; |
755 | } | |
756 | ||
757 | netdev->priv = c2dev; | |
758 | ||
759 | SET_NETDEV_DEV(netdev, &c2dev->pcidev->dev); | |
760 | ||
761 | memcpy_fromio(netdev->dev_addr, c2dev->kva + C2_REGS_RDMA_ENADDR, 6); | |
762 | ||
763 | /* Print out the MAC address */ | |
764 | pr_debug("%s: MAC %02X:%02X:%02X:%02X:%02X:%02X\n", | |
765 | netdev->name, | |
766 | netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2], | |
767 | netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]); | |
768 | ||
769 | #if 0 | |
770 | /* Disable network packets */ | |
771 | netif_stop_queue(netdev); | |
772 | #endif | |
773 | return netdev; | |
774 | } | |
775 | ||
776 | int c2_register_device(struct c2_dev *dev) | |
777 | { | |
2ffcab6a | 778 | int ret = -ENOMEM; |
f94b533d TT |
779 | int i; |
780 | ||
781 | /* Register pseudo network device */ | |
782 | dev->pseudo_netdev = c2_pseudo_netdev_init(dev); | |
2ffcab6a TT |
783 | if (!dev->pseudo_netdev) |
784 | goto out3; | |
785 | ||
786 | ret = register_netdev(dev->pseudo_netdev); | |
787 | if (ret) | |
788 | goto out2; | |
f94b533d | 789 | |
33718363 | 790 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
791 | strlcpy(dev->ibdev.name, "amso%d", IB_DEVICE_NAME_MAX); |
792 | dev->ibdev.owner = THIS_MODULE; | |
793 | dev->ibdev.uverbs_cmd_mask = | |
794 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
795 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
796 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
797 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
798 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
799 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
800 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
801 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
802 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
803 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | | |
804 | (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | | |
805 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
806 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
807 | (1ull << IB_USER_VERBS_CMD_POLL_CQ) | | |
808 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | | |
809 | (1ull << IB_USER_VERBS_CMD_POST_SEND) | | |
810 | (1ull << IB_USER_VERBS_CMD_POST_RECV); | |
811 | ||
812 | dev->ibdev.node_type = RDMA_NODE_RNIC; | |
813 | memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); | |
814 | memcpy(&dev->ibdev.node_guid, dev->pseudo_netdev->dev_addr, 6); | |
815 | dev->ibdev.phys_port_cnt = 1; | |
f4fd0b22 | 816 | dev->ibdev.num_comp_vectors = 1; |
f94b533d | 817 | dev->ibdev.dma_device = &dev->pcidev->dev; |
f94b533d TT |
818 | dev->ibdev.query_device = c2_query_device; |
819 | dev->ibdev.query_port = c2_query_port; | |
820 | dev->ibdev.modify_port = c2_modify_port; | |
821 | dev->ibdev.query_pkey = c2_query_pkey; | |
822 | dev->ibdev.query_gid = c2_query_gid; | |
823 | dev->ibdev.alloc_ucontext = c2_alloc_ucontext; | |
824 | dev->ibdev.dealloc_ucontext = c2_dealloc_ucontext; | |
825 | dev->ibdev.mmap = c2_mmap_uar; | |
826 | dev->ibdev.alloc_pd = c2_alloc_pd; | |
827 | dev->ibdev.dealloc_pd = c2_dealloc_pd; | |
828 | dev->ibdev.create_ah = c2_ah_create; | |
829 | dev->ibdev.destroy_ah = c2_ah_destroy; | |
830 | dev->ibdev.create_qp = c2_create_qp; | |
831 | dev->ibdev.modify_qp = c2_modify_qp; | |
832 | dev->ibdev.destroy_qp = c2_destroy_qp; | |
833 | dev->ibdev.create_cq = c2_create_cq; | |
834 | dev->ibdev.destroy_cq = c2_destroy_cq; | |
835 | dev->ibdev.poll_cq = c2_poll_cq; | |
836 | dev->ibdev.get_dma_mr = c2_get_dma_mr; | |
837 | dev->ibdev.reg_phys_mr = c2_reg_phys_mr; | |
838 | dev->ibdev.reg_user_mr = c2_reg_user_mr; | |
839 | dev->ibdev.dereg_mr = c2_dereg_mr; | |
840 | ||
841 | dev->ibdev.alloc_fmr = NULL; | |
842 | dev->ibdev.unmap_fmr = NULL; | |
843 | dev->ibdev.dealloc_fmr = NULL; | |
844 | dev->ibdev.map_phys_fmr = NULL; | |
845 | ||
846 | dev->ibdev.attach_mcast = c2_multicast_attach; | |
847 | dev->ibdev.detach_mcast = c2_multicast_detach; | |
848 | dev->ibdev.process_mad = c2_process_mad; | |
849 | ||
850 | dev->ibdev.req_notify_cq = c2_arm_cq; | |
851 | dev->ibdev.post_send = c2_post_send; | |
852 | dev->ibdev.post_recv = c2_post_receive; | |
853 | ||
854 | dev->ibdev.iwcm = kmalloc(sizeof(*dev->ibdev.iwcm), GFP_KERNEL); | |
855 | dev->ibdev.iwcm->add_ref = c2_add_ref; | |
856 | dev->ibdev.iwcm->rem_ref = c2_rem_ref; | |
857 | dev->ibdev.iwcm->get_qp = c2_get_qp; | |
858 | dev->ibdev.iwcm->connect = c2_connect; | |
859 | dev->ibdev.iwcm->accept = c2_accept; | |
860 | dev->ibdev.iwcm->reject = c2_reject; | |
861 | dev->ibdev.iwcm->create_listen = c2_service_create; | |
862 | dev->ibdev.iwcm->destroy_listen = c2_service_destroy; | |
863 | ||
864 | ret = ib_register_device(&dev->ibdev); | |
865 | if (ret) | |
2ffcab6a | 866 | goto out1; |
f94b533d | 867 | |
f4e91eb4 TJ |
868 | for (i = 0; i < ARRAY_SIZE(c2_dev_attributes); ++i) { |
869 | ret = device_create_file(&dev->ibdev.dev, | |
870 | c2_dev_attributes[i]); | |
2ffcab6a TT |
871 | if (ret) |
872 | goto out0; | |
f94b533d | 873 | } |
2ffcab6a | 874 | goto out3; |
f94b533d | 875 | |
2ffcab6a TT |
876 | out0: |
877 | ib_unregister_device(&dev->ibdev); | |
878 | out1: | |
879 | unregister_netdev(dev->pseudo_netdev); | |
880 | out2: | |
881 | free_netdev(dev->pseudo_netdev); | |
882 | out3: | |
33718363 | 883 | pr_debug("%s:%u ret=%d\n", __func__, __LINE__, ret); |
2ffcab6a | 884 | return ret; |
f94b533d TT |
885 | } |
886 | ||
887 | void c2_unregister_device(struct c2_dev *dev) | |
888 | { | |
33718363 | 889 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
890 | unregister_netdev(dev->pseudo_netdev); |
891 | free_netdev(dev->pseudo_netdev); | |
892 | ib_unregister_device(&dev->ibdev); | |
893 | } |