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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> |
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 | ||
2528e33e MB |
66 | static int c2_query_device(struct ib_device *ibdev, struct ib_device_attr *props, |
67 | struct ib_udata *uhw) | |
f94b533d TT |
68 | { |
69 | struct c2_dev *c2dev = to_c2dev(ibdev); | |
70 | ||
33718363 | 71 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d | 72 | |
2528e33e MB |
73 | if (uhw->inlen || uhw->outlen) |
74 | return -EINVAL; | |
75 | ||
f94b533d TT |
76 | *props = c2dev->props; |
77 | return 0; | |
78 | } | |
79 | ||
80 | static int c2_query_port(struct ib_device *ibdev, | |
81 | u8 port, struct ib_port_attr *props) | |
82 | { | |
33718363 | 83 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
84 | |
85 | props->max_mtu = IB_MTU_4096; | |
86 | props->lid = 0; | |
87 | props->lmc = 0; | |
88 | props->sm_lid = 0; | |
89 | props->sm_sl = 0; | |
90 | props->state = IB_PORT_ACTIVE; | |
91 | props->phys_state = 0; | |
92 | props->port_cap_flags = | |
93 | IB_PORT_CM_SUP | | |
94 | IB_PORT_REINIT_SUP | | |
95 | IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; | |
96 | props->gid_tbl_len = 1; | |
97 | props->pkey_tbl_len = 1; | |
98 | props->qkey_viol_cntr = 0; | |
99 | props->active_width = 1; | |
2e96691c | 100 | props->active_speed = IB_SPEED_SDR; |
f94b533d TT |
101 | |
102 | return 0; | |
103 | } | |
104 | ||
f94b533d TT |
105 | static int c2_query_pkey(struct ib_device *ibdev, |
106 | u8 port, u16 index, u16 * pkey) | |
107 | { | |
33718363 | 108 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
109 | *pkey = 0; |
110 | return 0; | |
111 | } | |
112 | ||
113 | static int c2_query_gid(struct ib_device *ibdev, u8 port, | |
114 | int index, union ib_gid *gid) | |
115 | { | |
116 | struct c2_dev *c2dev = to_c2dev(ibdev); | |
117 | ||
33718363 | 118 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
119 | memset(&(gid->raw[0]), 0, sizeof(gid->raw)); |
120 | memcpy(&(gid->raw[0]), c2dev->pseudo_netdev->dev_addr, 6); | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | /* Allocate the user context data structure. This keeps track | |
126 | * of all objects associated with a particular user-mode client. | |
127 | */ | |
128 | static struct ib_ucontext *c2_alloc_ucontext(struct ib_device *ibdev, | |
129 | struct ib_udata *udata) | |
130 | { | |
131 | struct c2_ucontext *context; | |
132 | ||
33718363 | 133 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
134 | context = kmalloc(sizeof(*context), GFP_KERNEL); |
135 | if (!context) | |
136 | return ERR_PTR(-ENOMEM); | |
137 | ||
138 | return &context->ibucontext; | |
139 | } | |
140 | ||
141 | static int c2_dealloc_ucontext(struct ib_ucontext *context) | |
142 | { | |
33718363 | 143 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
144 | kfree(context); |
145 | return 0; | |
146 | } | |
147 | ||
148 | static int c2_mmap_uar(struct ib_ucontext *context, struct vm_area_struct *vma) | |
149 | { | |
33718363 | 150 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
151 | return -ENOSYS; |
152 | } | |
153 | ||
154 | static struct ib_pd *c2_alloc_pd(struct ib_device *ibdev, | |
155 | struct ib_ucontext *context, | |
156 | struct ib_udata *udata) | |
157 | { | |
158 | struct c2_pd *pd; | |
159 | int err; | |
160 | ||
33718363 | 161 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
162 | |
163 | pd = kmalloc(sizeof(*pd), GFP_KERNEL); | |
164 | if (!pd) | |
165 | return ERR_PTR(-ENOMEM); | |
166 | ||
167 | err = c2_pd_alloc(to_c2dev(ibdev), !context, pd); | |
168 | if (err) { | |
169 | kfree(pd); | |
170 | return ERR_PTR(err); | |
171 | } | |
172 | ||
173 | if (context) { | |
174 | if (ib_copy_to_udata(udata, &pd->pd_id, sizeof(__u32))) { | |
175 | c2_pd_free(to_c2dev(ibdev), pd); | |
176 | kfree(pd); | |
177 | return ERR_PTR(-EFAULT); | |
178 | } | |
179 | } | |
180 | ||
181 | return &pd->ibpd; | |
182 | } | |
183 | ||
184 | static int c2_dealloc_pd(struct ib_pd *pd) | |
185 | { | |
33718363 | 186 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
187 | c2_pd_free(to_c2dev(pd->device), to_c2pd(pd)); |
188 | kfree(pd); | |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
193 | static struct ib_ah *c2_ah_create(struct ib_pd *pd, struct ib_ah_attr *ah_attr) | |
194 | { | |
33718363 | 195 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
196 | return ERR_PTR(-ENOSYS); |
197 | } | |
198 | ||
199 | static int c2_ah_destroy(struct ib_ah *ah) | |
200 | { | |
33718363 | 201 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
202 | return -ENOSYS; |
203 | } | |
204 | ||
205 | static void c2_add_ref(struct ib_qp *ibqp) | |
206 | { | |
207 | struct c2_qp *qp; | |
208 | BUG_ON(!ibqp); | |
209 | qp = to_c2qp(ibqp); | |
210 | atomic_inc(&qp->refcount); | |
211 | } | |
212 | ||
213 | static void c2_rem_ref(struct ib_qp *ibqp) | |
214 | { | |
215 | struct c2_qp *qp; | |
216 | BUG_ON(!ibqp); | |
217 | qp = to_c2qp(ibqp); | |
218 | if (atomic_dec_and_test(&qp->refcount)) | |
219 | wake_up(&qp->wait); | |
220 | } | |
221 | ||
222 | struct ib_qp *c2_get_qp(struct ib_device *device, int qpn) | |
223 | { | |
224 | struct c2_dev* c2dev = to_c2dev(device); | |
225 | struct c2_qp *qp; | |
226 | ||
227 | qp = c2_find_qpn(c2dev, qpn); | |
228 | pr_debug("%s Returning QP=%p for QPN=%d, device=%p, refcount=%d\n", | |
33718363 | 229 | __func__, qp, qpn, device, |
f94b533d TT |
230 | (qp?atomic_read(&qp->refcount):0)); |
231 | ||
232 | return (qp?&qp->ibqp:NULL); | |
233 | } | |
234 | ||
235 | static struct ib_qp *c2_create_qp(struct ib_pd *pd, | |
236 | struct ib_qp_init_attr *init_attr, | |
237 | struct ib_udata *udata) | |
238 | { | |
239 | struct c2_qp *qp; | |
240 | int err; | |
241 | ||
33718363 | 242 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d | 243 | |
b846f25a EC |
244 | if (init_attr->create_flags) |
245 | return ERR_PTR(-EINVAL); | |
246 | ||
f94b533d TT |
247 | switch (init_attr->qp_type) { |
248 | case IB_QPT_RC: | |
249 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); | |
250 | if (!qp) { | |
33718363 | 251 | pr_debug("%s: Unable to allocate QP\n", __func__); |
f94b533d TT |
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: | |
33718363 | 268 | pr_debug("%s: Invalid QP type: %d\n", __func__, |
f94b533d TT |
269 | init_attr->qp_type); |
270 | return ERR_PTR(-EINVAL); | |
f94b533d TT |
271 | } |
272 | ||
273 | if (err) { | |
274 | kfree(qp); | |
275 | return ERR_PTR(err); | |
276 | } | |
277 | ||
278 | return &qp->ibqp; | |
279 | } | |
280 | ||
281 | static int c2_destroy_qp(struct ib_qp *ib_qp) | |
282 | { | |
283 | struct c2_qp *qp = to_c2qp(ib_qp); | |
284 | ||
285 | pr_debug("%s:%u qp=%p,qp->state=%d\n", | |
33718363 | 286 | __func__, __LINE__, ib_qp, qp->state); |
f94b533d TT |
287 | c2_free_qp(to_c2dev(ib_qp->device), qp); |
288 | kfree(qp); | |
289 | return 0; | |
290 | } | |
291 | ||
bcf4c1ea MB |
292 | static struct ib_cq *c2_create_cq(struct ib_device *ibdev, |
293 | const struct ib_cq_init_attr *attr, | |
f94b533d TT |
294 | struct ib_ucontext *context, |
295 | struct ib_udata *udata) | |
296 | { | |
bcf4c1ea | 297 | int entries = attr->cqe; |
f94b533d TT |
298 | struct c2_cq *cq; |
299 | int err; | |
300 | ||
bcf4c1ea MB |
301 | if (attr->flags) |
302 | return ERR_PTR(-EINVAL); | |
303 | ||
f94b533d TT |
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 | ||
0bc2763f | 362 | if (offset_in_page(buffer_list[i].addr)) { |
f94b533d TT |
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, | |
b49f3b23 | 375 | BIT(page_shift)) >> page_shift; |
f94b533d TT |
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, | |
b49f3b23 | 390 | BIT(page_shift)) >> page_shift; |
f94b533d TT |
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 | 410 | err = c2_nsmr_register_phys_kern(to_c2dev(ib_pd->device), page_list, |
b49f3b23 | 411 | BIT(page_shift), pbl_depth, |
f94b533d TT |
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; | |
eeb8461e | 442 | int i, k, entry; |
f94b533d | 443 | int err = 0; |
eeb8461e | 444 | struct scatterlist *sg; |
f94b533d TT |
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 | ||
cb9fbc5c | 455 | c2mr->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0); |
f7c6a7b5 RD |
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; | |
eeb8461e | 463 | n = c2mr->umem->nmap; |
f94b533d TT |
464 | |
465 | pages = kmalloc(n * sizeof(u64), GFP_KERNEL); | |
466 | if (!pages) { | |
467 | err = -ENOMEM; | |
468 | goto err; | |
469 | } | |
470 | ||
471 | i = 0; | |
eeb8461e YH |
472 | for_each_sg(c2mr->umem->sg_head.sgl, sg, c2mr->umem->nmap, entry) { |
473 | len = sg_dma_len(sg) >> shift; | |
474 | for (k = 0; k < len; ++k) { | |
475 | pages[i++] = | |
476 | sg_dma_address(sg) + | |
477 | (c2mr->umem->page_size * k); | |
f94b533d TT |
478 | } |
479 | } | |
480 | ||
f7c6a7b5 | 481 | kva = virt; |
f94b533d TT |
482 | err = c2_nsmr_register_phys_kern(to_c2dev(pd->device), |
483 | pages, | |
f7c6a7b5 | 484 | c2mr->umem->page_size, |
f94b533d | 485 | i, |
f7c6a7b5 | 486 | length, |
406f9e5f | 487 | ib_umem_offset(c2mr->umem), |
f94b533d TT |
488 | &kva, |
489 | c2_convert_access(acc), | |
490 | c2mr); | |
491 | kfree(pages); | |
f7c6a7b5 RD |
492 | if (err) |
493 | goto err; | |
f94b533d TT |
494 | return &c2mr->ibmr; |
495 | ||
496 | err: | |
f7c6a7b5 | 497 | ib_umem_release(c2mr->umem); |
f94b533d TT |
498 | kfree(c2mr); |
499 | return ERR_PTR(err); | |
500 | } | |
501 | ||
502 | static int c2_dereg_mr(struct ib_mr *ib_mr) | |
503 | { | |
504 | struct c2_mr *mr = to_c2mr(ib_mr); | |
505 | int err; | |
506 | ||
33718363 | 507 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
508 | |
509 | err = c2_stag_dealloc(to_c2dev(ib_mr->device), ib_mr->lkey); | |
510 | if (err) | |
511 | pr_debug("c2_stag_dealloc failed: %d\n", err); | |
f7c6a7b5 RD |
512 | else { |
513 | if (mr->umem) | |
514 | ib_umem_release(mr->umem); | |
f94b533d | 515 | kfree(mr); |
f7c6a7b5 | 516 | } |
f94b533d TT |
517 | |
518 | return err; | |
519 | } | |
520 | ||
f4e91eb4 TJ |
521 | static ssize_t show_rev(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__); |
f4e91eb4 | 526 | return sprintf(buf, "%x\n", c2dev->props.hw_ver); |
f94b533d TT |
527 | } |
528 | ||
f4e91eb4 TJ |
529 | static ssize_t show_fw_ver(struct device *dev, struct device_attribute *attr, |
530 | char *buf) | |
f94b533d | 531 | { |
f4e91eb4 | 532 | struct c2_dev *c2dev = container_of(dev, struct c2_dev, ibdev.dev); |
33718363 | 533 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d | 534 | return sprintf(buf, "%x.%x.%x\n", |
f4e91eb4 TJ |
535 | (int) (c2dev->props.fw_ver >> 32), |
536 | (int) (c2dev->props.fw_ver >> 16) & 0xffff, | |
537 | (int) (c2dev->props.fw_ver & 0xffff)); | |
f94b533d TT |
538 | } |
539 | ||
f4e91eb4 TJ |
540 | static ssize_t show_hca(struct device *dev, struct device_attribute *attr, |
541 | char *buf) | |
f94b533d | 542 | { |
33718363 | 543 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
544 | return sprintf(buf, "AMSO1100\n"); |
545 | } | |
546 | ||
f4e91eb4 TJ |
547 | static ssize_t show_board(struct device *dev, struct device_attribute *attr, |
548 | char *buf) | |
f94b533d | 549 | { |
33718363 | 550 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
551 | return sprintf(buf, "%.*s\n", 32, "AMSO1100 Board ID"); |
552 | } | |
553 | ||
f4e91eb4 TJ |
554 | static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); |
555 | static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); | |
556 | static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); | |
557 | static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); | |
f94b533d | 558 | |
f4e91eb4 TJ |
559 | static struct device_attribute *c2_dev_attributes[] = { |
560 | &dev_attr_hw_rev, | |
561 | &dev_attr_fw_ver, | |
562 | &dev_attr_hca_type, | |
563 | &dev_attr_board_id | |
f94b533d TT |
564 | }; |
565 | ||
566 | static int c2_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, | |
567 | int attr_mask, struct ib_udata *udata) | |
568 | { | |
569 | int err; | |
570 | ||
571 | err = | |
572 | c2_qp_modify(to_c2dev(ibqp->device), to_c2qp(ibqp), attr, | |
573 | attr_mask); | |
574 | ||
575 | return err; | |
576 | } | |
577 | ||
578 | static int c2_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
579 | { | |
33718363 | 580 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
581 | return -ENOSYS; |
582 | } | |
583 | ||
584 | static int c2_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) | |
585 | { | |
33718363 | 586 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
587 | return -ENOSYS; |
588 | } | |
589 | ||
590 | static int c2_process_mad(struct ib_device *ibdev, | |
591 | int mad_flags, | |
592 | u8 port_num, | |
a97e2d86 IW |
593 | const struct ib_wc *in_wc, |
594 | const struct ib_grh *in_grh, | |
4cd7c947 IW |
595 | const struct ib_mad_hdr *in_mad, |
596 | size_t in_mad_size, | |
597 | struct ib_mad_hdr *out_mad, | |
598 | size_t *out_mad_size, | |
599 | u16 *out_mad_pkey_index) | |
f94b533d | 600 | { |
33718363 | 601 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
602 | return -ENOSYS; |
603 | } | |
604 | ||
605 | static int c2_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
606 | { | |
33718363 | 607 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
608 | |
609 | /* Request a connection */ | |
610 | return c2_llp_connect(cm_id, iw_param); | |
611 | } | |
612 | ||
613 | static int c2_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *iw_param) | |
614 | { | |
33718363 | 615 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
616 | |
617 | /* Accept the new connection */ | |
618 | return c2_llp_accept(cm_id, iw_param); | |
619 | } | |
620 | ||
621 | static int c2_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len) | |
622 | { | |
623 | int err; | |
624 | ||
33718363 | 625 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
626 | |
627 | err = c2_llp_reject(cm_id, pdata, pdata_len); | |
628 | return err; | |
629 | } | |
630 | ||
631 | static int c2_service_create(struct iw_cm_id *cm_id, int backlog) | |
632 | { | |
633 | int err; | |
634 | ||
33718363 | 635 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
636 | err = c2_llp_service_create(cm_id, backlog); |
637 | pr_debug("%s:%u err=%d\n", | |
33718363 | 638 | __func__, __LINE__, |
f94b533d TT |
639 | err); |
640 | return err; | |
641 | } | |
642 | ||
643 | static int c2_service_destroy(struct iw_cm_id *cm_id) | |
644 | { | |
645 | int err; | |
33718363 | 646 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
647 | |
648 | err = c2_llp_service_destroy(cm_id); | |
649 | ||
650 | return err; | |
651 | } | |
652 | ||
653 | static int c2_pseudo_up(struct net_device *netdev) | |
654 | { | |
655 | struct in_device *ind; | |
4b40eed7 | 656 | struct c2_dev *c2dev = netdev->ml_priv; |
f94b533d TT |
657 | |
658 | ind = in_dev_get(netdev); | |
659 | if (!ind) | |
660 | return 0; | |
661 | ||
662 | pr_debug("adding...\n"); | |
663 | for_ifa(ind) { | |
664 | #ifdef DEBUG | |
665 | u8 *ip = (u8 *) & ifa->ifa_address; | |
666 | ||
667 | pr_debug("%s: %d.%d.%d.%d\n", | |
668 | ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]); | |
669 | #endif | |
670 | c2_add_addr(c2dev, ifa->ifa_address, ifa->ifa_mask); | |
671 | } | |
672 | endfor_ifa(ind); | |
673 | in_dev_put(ind); | |
674 | ||
675 | return 0; | |
676 | } | |
677 | ||
678 | static int c2_pseudo_down(struct net_device *netdev) | |
679 | { | |
680 | struct in_device *ind; | |
4b40eed7 | 681 | struct c2_dev *c2dev = netdev->ml_priv; |
f94b533d TT |
682 | |
683 | ind = in_dev_get(netdev); | |
684 | if (!ind) | |
685 | return 0; | |
686 | ||
687 | pr_debug("deleting...\n"); | |
688 | for_ifa(ind) { | |
689 | #ifdef DEBUG | |
690 | u8 *ip = (u8 *) & ifa->ifa_address; | |
691 | ||
692 | pr_debug("%s: %d.%d.%d.%d\n", | |
693 | ifa->ifa_label, ip[0], ip[1], ip[2], ip[3]); | |
694 | #endif | |
695 | c2_del_addr(c2dev, ifa->ifa_address, ifa->ifa_mask); | |
696 | } | |
697 | endfor_ifa(ind); | |
698 | in_dev_put(ind); | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
703 | static int c2_pseudo_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
704 | { | |
705 | kfree_skb(skb); | |
706 | return NETDEV_TX_OK; | |
707 | } | |
708 | ||
709 | static int c2_pseudo_change_mtu(struct net_device *netdev, int new_mtu) | |
710 | { | |
f94b533d TT |
711 | if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU) |
712 | return -EINVAL; | |
713 | ||
714 | netdev->mtu = new_mtu; | |
715 | ||
716 | /* TODO: Tell rnic about new rmda interface mtu */ | |
687c75dc | 717 | return 0; |
f94b533d TT |
718 | } |
719 | ||
687c75dc SH |
720 | static const struct net_device_ops c2_pseudo_netdev_ops = { |
721 | .ndo_open = c2_pseudo_up, | |
722 | .ndo_stop = c2_pseudo_down, | |
723 | .ndo_start_xmit = c2_pseudo_xmit_frame, | |
724 | .ndo_change_mtu = c2_pseudo_change_mtu, | |
725 | .ndo_validate_addr = eth_validate_addr, | |
726 | }; | |
727 | ||
f94b533d TT |
728 | static void setup(struct net_device *netdev) |
729 | { | |
687c75dc SH |
730 | netdev->netdev_ops = &c2_pseudo_netdev_ops; |
731 | ||
f94b533d TT |
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; | |
f94b533d TT |
739 | } |
740 | ||
741 | static struct net_device *c2_pseudo_netdev_init(struct c2_dev *c2dev) | |
742 | { | |
743 | char name[IFNAMSIZ]; | |
744 | struct net_device *netdev; | |
745 | ||
746 | /* change ethxxx to iwxxx */ | |
747 | strcpy(name, "iw"); | |
748 | strcat(name, &c2dev->netdev->name[3]); | |
c835a677 | 749 | netdev = alloc_netdev(0, name, NET_NAME_UNKNOWN, setup); |
f94b533d TT |
750 | if (!netdev) { |
751 | printk(KERN_ERR PFX "%s - etherdev alloc failed", | |
33718363 | 752 | __func__); |
f94b533d TT |
753 | return NULL; |
754 | } | |
755 | ||
4b40eed7 | 756 | netdev->ml_priv = c2dev; |
f94b533d TT |
757 | |
758 | SET_NETDEV_DEV(netdev, &c2dev->pcidev->dev); | |
759 | ||
760 | memcpy_fromio(netdev->dev_addr, c2dev->kva + C2_REGS_RDMA_ENADDR, 6); | |
761 | ||
762 | /* Print out the MAC address */ | |
2be60533 | 763 | pr_debug("%s: MAC %pM\n", netdev->name, netdev->dev_addr); |
f94b533d TT |
764 | |
765 | #if 0 | |
766 | /* Disable network packets */ | |
767 | netif_stop_queue(netdev); | |
768 | #endif | |
769 | return netdev; | |
770 | } | |
771 | ||
7738613e IW |
772 | static int c2_port_immutable(struct ib_device *ibdev, u8 port_num, |
773 | struct ib_port_immutable *immutable) | |
774 | { | |
775 | struct ib_port_attr attr; | |
776 | int err; | |
777 | ||
778 | err = c2_query_port(ibdev, port_num, &attr); | |
779 | if (err) | |
780 | return err; | |
781 | ||
782 | immutable->pkey_tbl_len = attr.pkey_tbl_len; | |
783 | immutable->gid_tbl_len = attr.gid_tbl_len; | |
f9b22e35 | 784 | immutable->core_cap_flags = RDMA_CORE_PORT_IWARP; |
7738613e IW |
785 | |
786 | return 0; | |
787 | } | |
788 | ||
f94b533d TT |
789 | int c2_register_device(struct c2_dev *dev) |
790 | { | |
2ffcab6a | 791 | int ret = -ENOMEM; |
f94b533d TT |
792 | int i; |
793 | ||
794 | /* Register pseudo network device */ | |
795 | dev->pseudo_netdev = c2_pseudo_netdev_init(dev); | |
2ffcab6a | 796 | if (!dev->pseudo_netdev) |
1493ab40 | 797 | goto out; |
2ffcab6a TT |
798 | |
799 | ret = register_netdev(dev->pseudo_netdev); | |
800 | if (ret) | |
1493ab40 | 801 | goto out_free_netdev; |
f94b533d | 802 | |
33718363 | 803 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
804 | strlcpy(dev->ibdev.name, "amso%d", IB_DEVICE_NAME_MAX); |
805 | dev->ibdev.owner = THIS_MODULE; | |
806 | dev->ibdev.uverbs_cmd_mask = | |
807 | (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | | |
808 | (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | | |
809 | (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | | |
810 | (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | | |
811 | (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | | |
812 | (1ull << IB_USER_VERBS_CMD_REG_MR) | | |
813 | (1ull << IB_USER_VERBS_CMD_DEREG_MR) | | |
814 | (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | | |
815 | (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | | |
816 | (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | | |
817 | (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | | |
818 | (1ull << IB_USER_VERBS_CMD_CREATE_QP) | | |
819 | (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | | |
820 | (1ull << IB_USER_VERBS_CMD_POLL_CQ) | | |
821 | (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | | |
822 | (1ull << IB_USER_VERBS_CMD_POST_SEND) | | |
823 | (1ull << IB_USER_VERBS_CMD_POST_RECV); | |
824 | ||
825 | dev->ibdev.node_type = RDMA_NODE_RNIC; | |
826 | memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); | |
827 | memcpy(&dev->ibdev.node_guid, dev->pseudo_netdev->dev_addr, 6); | |
828 | dev->ibdev.phys_port_cnt = 1; | |
f4fd0b22 | 829 | dev->ibdev.num_comp_vectors = 1; |
f94b533d | 830 | dev->ibdev.dma_device = &dev->pcidev->dev; |
f94b533d TT |
831 | dev->ibdev.query_device = c2_query_device; |
832 | dev->ibdev.query_port = c2_query_port; | |
f94b533d TT |
833 | dev->ibdev.query_pkey = c2_query_pkey; |
834 | dev->ibdev.query_gid = c2_query_gid; | |
835 | dev->ibdev.alloc_ucontext = c2_alloc_ucontext; | |
836 | dev->ibdev.dealloc_ucontext = c2_dealloc_ucontext; | |
837 | dev->ibdev.mmap = c2_mmap_uar; | |
838 | dev->ibdev.alloc_pd = c2_alloc_pd; | |
839 | dev->ibdev.dealloc_pd = c2_dealloc_pd; | |
840 | dev->ibdev.create_ah = c2_ah_create; | |
841 | dev->ibdev.destroy_ah = c2_ah_destroy; | |
842 | dev->ibdev.create_qp = c2_create_qp; | |
843 | dev->ibdev.modify_qp = c2_modify_qp; | |
844 | dev->ibdev.destroy_qp = c2_destroy_qp; | |
845 | dev->ibdev.create_cq = c2_create_cq; | |
846 | dev->ibdev.destroy_cq = c2_destroy_cq; | |
847 | dev->ibdev.poll_cq = c2_poll_cq; | |
848 | dev->ibdev.get_dma_mr = c2_get_dma_mr; | |
849 | dev->ibdev.reg_phys_mr = c2_reg_phys_mr; | |
850 | dev->ibdev.reg_user_mr = c2_reg_user_mr; | |
851 | dev->ibdev.dereg_mr = c2_dereg_mr; | |
7738613e | 852 | dev->ibdev.get_port_immutable = c2_port_immutable; |
f94b533d TT |
853 | |
854 | dev->ibdev.alloc_fmr = NULL; | |
855 | dev->ibdev.unmap_fmr = NULL; | |
856 | dev->ibdev.dealloc_fmr = NULL; | |
857 | dev->ibdev.map_phys_fmr = NULL; | |
858 | ||
859 | dev->ibdev.attach_mcast = c2_multicast_attach; | |
860 | dev->ibdev.detach_mcast = c2_multicast_detach; | |
861 | dev->ibdev.process_mad = c2_process_mad; | |
862 | ||
863 | dev->ibdev.req_notify_cq = c2_arm_cq; | |
864 | dev->ibdev.post_send = c2_post_send; | |
865 | dev->ibdev.post_recv = c2_post_receive; | |
866 | ||
867 | dev->ibdev.iwcm = kmalloc(sizeof(*dev->ibdev.iwcm), GFP_KERNEL); | |
1493ab40 RK |
868 | if (dev->ibdev.iwcm == NULL) { |
869 | ret = -ENOMEM; | |
870 | goto out_unregister_netdev; | |
871 | } | |
f94b533d TT |
872 | dev->ibdev.iwcm->add_ref = c2_add_ref; |
873 | dev->ibdev.iwcm->rem_ref = c2_rem_ref; | |
874 | dev->ibdev.iwcm->get_qp = c2_get_qp; | |
875 | dev->ibdev.iwcm->connect = c2_connect; | |
876 | dev->ibdev.iwcm->accept = c2_accept; | |
877 | dev->ibdev.iwcm->reject = c2_reject; | |
878 | dev->ibdev.iwcm->create_listen = c2_service_create; | |
879 | dev->ibdev.iwcm->destroy_listen = c2_service_destroy; | |
880 | ||
9a6edb60 | 881 | ret = ib_register_device(&dev->ibdev, NULL); |
f94b533d | 882 | if (ret) |
1493ab40 | 883 | goto out_free_iwcm; |
f94b533d | 884 | |
f4e91eb4 TJ |
885 | for (i = 0; i < ARRAY_SIZE(c2_dev_attributes); ++i) { |
886 | ret = device_create_file(&dev->ibdev.dev, | |
887 | c2_dev_attributes[i]); | |
2ffcab6a | 888 | if (ret) |
1493ab40 | 889 | goto out_unregister_ibdev; |
f94b533d | 890 | } |
1493ab40 | 891 | goto out; |
f94b533d | 892 | |
1493ab40 | 893 | out_unregister_ibdev: |
2ffcab6a | 894 | ib_unregister_device(&dev->ibdev); |
1493ab40 RK |
895 | out_free_iwcm: |
896 | kfree(dev->ibdev.iwcm); | |
897 | out_unregister_netdev: | |
2ffcab6a | 898 | unregister_netdev(dev->pseudo_netdev); |
1493ab40 | 899 | out_free_netdev: |
2ffcab6a | 900 | free_netdev(dev->pseudo_netdev); |
1493ab40 | 901 | out: |
33718363 | 902 | pr_debug("%s:%u ret=%d\n", __func__, __LINE__, ret); |
2ffcab6a | 903 | return ret; |
f94b533d TT |
904 | } |
905 | ||
906 | void c2_unregister_device(struct c2_dev *dev) | |
907 | { | |
33718363 | 908 | pr_debug("%s:%u\n", __func__, __LINE__); |
f94b533d TT |
909 | unregister_netdev(dev->pseudo_netdev); |
910 | free_netdev(dev->pseudo_netdev); | |
911 | ib_unregister_device(&dev->ibdev); | |
912 | } |