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regulator: rn5t618: add RC5T619 PMIC support
[mirror_ubuntu-eoan-kernel.git] / drivers / infiniband / hw / cxgb3 / iwch_provider.c
1 /*
2 * Copyright (c) 2006 Chelsio, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32 #include <linux/module.h>
33 #include <linux/moduleparam.h>
34 #include <linux/device.h>
35 #include <linux/netdevice.h>
36 #include <linux/etherdevice.h>
37 #include <linux/delay.h>
38 #include <linux/errno.h>
39 #include <linux/list.h>
40 #include <linux/sched/mm.h>
41 #include <linux/spinlock.h>
42 #include <linux/ethtool.h>
43 #include <linux/rtnetlink.h>
44 #include <linux/inetdevice.h>
45 #include <linux/slab.h>
46
47 #include <asm/io.h>
48 #include <asm/irq.h>
49 #include <asm/byteorder.h>
50
51 #include <rdma/iw_cm.h>
52 #include <rdma/ib_verbs.h>
53 #include <rdma/ib_smi.h>
54 #include <rdma/ib_umem.h>
55 #include <rdma/ib_user_verbs.h>
56
57 #include "cxio_hal.h"
58 #include "iwch.h"
59 #include "iwch_provider.h"
60 #include "iwch_cm.h"
61 #include <rdma/cxgb3-abi.h>
62 #include "common.h"
63
64 static struct ib_ah *iwch_ah_create(struct ib_pd *pd,
65 struct rdma_ah_attr *ah_attr,
66 struct ib_udata *udata)
67 {
68 return ERR_PTR(-ENOSYS);
69 }
70
71 static int iwch_ah_destroy(struct ib_ah *ah)
72 {
73 return -ENOSYS;
74 }
75
76 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
77 {
78 return -ENOSYS;
79 }
80
81 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
82 {
83 return -ENOSYS;
84 }
85
86 static int iwch_process_mad(struct ib_device *ibdev,
87 int mad_flags,
88 u8 port_num,
89 const struct ib_wc *in_wc,
90 const struct ib_grh *in_grh,
91 const struct ib_mad_hdr *in_mad,
92 size_t in_mad_size,
93 struct ib_mad_hdr *out_mad,
94 size_t *out_mad_size,
95 u16 *out_mad_pkey_index)
96 {
97 return -ENOSYS;
98 }
99
100 static int iwch_dealloc_ucontext(struct ib_ucontext *context)
101 {
102 struct iwch_dev *rhp = to_iwch_dev(context->device);
103 struct iwch_ucontext *ucontext = to_iwch_ucontext(context);
104 struct iwch_mm_entry *mm, *tmp;
105
106 pr_debug("%s context %p\n", __func__, context);
107 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
108 kfree(mm);
109 cxio_release_ucontext(&rhp->rdev, &ucontext->uctx);
110 kfree(ucontext);
111 return 0;
112 }
113
114 static struct ib_ucontext *iwch_alloc_ucontext(struct ib_device *ibdev,
115 struct ib_udata *udata)
116 {
117 struct iwch_ucontext *context;
118 struct iwch_dev *rhp = to_iwch_dev(ibdev);
119
120 pr_debug("%s ibdev %p\n", __func__, ibdev);
121 context = kzalloc(sizeof(*context), GFP_KERNEL);
122 if (!context)
123 return ERR_PTR(-ENOMEM);
124 cxio_init_ucontext(&rhp->rdev, &context->uctx);
125 INIT_LIST_HEAD(&context->mmaps);
126 spin_lock_init(&context->mmap_lock);
127 return &context->ibucontext;
128 }
129
130 static int iwch_destroy_cq(struct ib_cq *ib_cq)
131 {
132 struct iwch_cq *chp;
133
134 pr_debug("%s ib_cq %p\n", __func__, ib_cq);
135 chp = to_iwch_cq(ib_cq);
136
137 remove_handle(chp->rhp, &chp->rhp->cqidr, chp->cq.cqid);
138 atomic_dec(&chp->refcnt);
139 wait_event(chp->wait, !atomic_read(&chp->refcnt));
140
141 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
142 kfree(chp);
143 return 0;
144 }
145
146 static struct ib_cq *iwch_create_cq(struct ib_device *ibdev,
147 const struct ib_cq_init_attr *attr,
148 struct ib_ucontext *ib_context,
149 struct ib_udata *udata)
150 {
151 int entries = attr->cqe;
152 struct iwch_dev *rhp;
153 struct iwch_cq *chp;
154 struct iwch_create_cq_resp uresp;
155 struct iwch_create_cq_req ureq;
156 struct iwch_ucontext *ucontext = NULL;
157 static int warned;
158 size_t resplen;
159
160 pr_debug("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
161 if (attr->flags)
162 return ERR_PTR(-EINVAL);
163
164 rhp = to_iwch_dev(ibdev);
165 chp = kzalloc(sizeof(*chp), GFP_KERNEL);
166 if (!chp)
167 return ERR_PTR(-ENOMEM);
168
169 if (ib_context) {
170 ucontext = to_iwch_ucontext(ib_context);
171 if (!t3a_device(rhp)) {
172 if (ib_copy_from_udata(&ureq, udata, sizeof (ureq))) {
173 kfree(chp);
174 return ERR_PTR(-EFAULT);
175 }
176 chp->user_rptr_addr = (u32 __user *)(unsigned long)ureq.user_rptr_addr;
177 }
178 }
179
180 if (t3a_device(rhp)) {
181
182 /*
183 * T3A: Add some fluff to handle extra CQEs inserted
184 * for various errors.
185 * Additional CQE possibilities:
186 * TERMINATE,
187 * incoming RDMA WRITE Failures
188 * incoming RDMA READ REQUEST FAILUREs
189 * NOTE: We cannot ensure the CQ won't overflow.
190 */
191 entries += 16;
192 }
193 entries = roundup_pow_of_two(entries);
194 chp->cq.size_log2 = ilog2(entries);
195
196 if (cxio_create_cq(&rhp->rdev, &chp->cq, !ucontext)) {
197 kfree(chp);
198 return ERR_PTR(-ENOMEM);
199 }
200 chp->rhp = rhp;
201 chp->ibcq.cqe = 1 << chp->cq.size_log2;
202 spin_lock_init(&chp->lock);
203 spin_lock_init(&chp->comp_handler_lock);
204 atomic_set(&chp->refcnt, 1);
205 init_waitqueue_head(&chp->wait);
206 if (insert_handle(rhp, &rhp->cqidr, chp, chp->cq.cqid)) {
207 cxio_destroy_cq(&chp->rhp->rdev, &chp->cq);
208 kfree(chp);
209 return ERR_PTR(-ENOMEM);
210 }
211
212 if (ucontext) {
213 struct iwch_mm_entry *mm;
214
215 mm = kmalloc(sizeof *mm, GFP_KERNEL);
216 if (!mm) {
217 iwch_destroy_cq(&chp->ibcq);
218 return ERR_PTR(-ENOMEM);
219 }
220 uresp.cqid = chp->cq.cqid;
221 uresp.size_log2 = chp->cq.size_log2;
222 spin_lock(&ucontext->mmap_lock);
223 uresp.key = ucontext->key;
224 ucontext->key += PAGE_SIZE;
225 spin_unlock(&ucontext->mmap_lock);
226 mm->key = uresp.key;
227 mm->addr = virt_to_phys(chp->cq.queue);
228 if (udata->outlen < sizeof uresp) {
229 if (!warned++)
230 pr_warn("Warning - downlevel libcxgb3 (non-fatal)\n");
231 mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
232 sizeof(struct t3_cqe));
233 resplen = sizeof(struct iwch_create_cq_resp_v0);
234 } else {
235 mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
236 sizeof(struct t3_cqe));
237 uresp.memsize = mm->len;
238 uresp.reserved = 0;
239 resplen = sizeof uresp;
240 }
241 if (ib_copy_to_udata(udata, &uresp, resplen)) {
242 kfree(mm);
243 iwch_destroy_cq(&chp->ibcq);
244 return ERR_PTR(-EFAULT);
245 }
246 insert_mmap(ucontext, mm);
247 }
248 pr_debug("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
249 chp->cq.cqid, chp, (1 << chp->cq.size_log2),
250 (unsigned long long)chp->cq.dma_addr);
251 return &chp->ibcq;
252 }
253
254 static int iwch_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata)
255 {
256 #ifdef notyet
257 struct iwch_cq *chp = to_iwch_cq(cq);
258 struct t3_cq oldcq, newcq;
259 int ret;
260
261 pr_debug("%s ib_cq %p cqe %d\n", __func__, cq, cqe);
262
263 /* We don't downsize... */
264 if (cqe <= cq->cqe)
265 return 0;
266
267 /* create new t3_cq with new size */
268 cqe = roundup_pow_of_two(cqe+1);
269 newcq.size_log2 = ilog2(cqe);
270
271 /* Dont allow resize to less than the current wce count */
272 if (cqe < Q_COUNT(chp->cq.rptr, chp->cq.wptr)) {
273 return -ENOMEM;
274 }
275
276 /* Quiesce all QPs using this CQ */
277 ret = iwch_quiesce_qps(chp);
278 if (ret) {
279 return ret;
280 }
281
282 ret = cxio_create_cq(&chp->rhp->rdev, &newcq);
283 if (ret) {
284 return ret;
285 }
286
287 /* copy CQEs */
288 memcpy(newcq.queue, chp->cq.queue, (1 << chp->cq.size_log2) *
289 sizeof(struct t3_cqe));
290
291 /* old iwch_qp gets new t3_cq but keeps old cqid */
292 oldcq = chp->cq;
293 chp->cq = newcq;
294 chp->cq.cqid = oldcq.cqid;
295
296 /* resize new t3_cq to update the HW context */
297 ret = cxio_resize_cq(&chp->rhp->rdev, &chp->cq);
298 if (ret) {
299 chp->cq = oldcq;
300 return ret;
301 }
302 chp->ibcq.cqe = (1<<chp->cq.size_log2) - 1;
303
304 /* destroy old t3_cq */
305 oldcq.cqid = newcq.cqid;
306 ret = cxio_destroy_cq(&chp->rhp->rdev, &oldcq);
307 if (ret) {
308 pr_err("%s - cxio_destroy_cq failed %d\n", __func__, ret);
309 }
310
311 /* add user hooks here */
312
313 /* resume qps */
314 ret = iwch_resume_qps(chp);
315 return ret;
316 #else
317 return -ENOSYS;
318 #endif
319 }
320
321 static int iwch_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
322 {
323 struct iwch_dev *rhp;
324 struct iwch_cq *chp;
325 enum t3_cq_opcode cq_op;
326 int err;
327 unsigned long flag;
328 u32 rptr;
329
330 chp = to_iwch_cq(ibcq);
331 rhp = chp->rhp;
332 if ((flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED)
333 cq_op = CQ_ARM_SE;
334 else
335 cq_op = CQ_ARM_AN;
336 if (chp->user_rptr_addr) {
337 if (get_user(rptr, chp->user_rptr_addr))
338 return -EFAULT;
339 spin_lock_irqsave(&chp->lock, flag);
340 chp->cq.rptr = rptr;
341 } else
342 spin_lock_irqsave(&chp->lock, flag);
343 pr_debug("%s rptr 0x%x\n", __func__, chp->cq.rptr);
344 err = cxio_hal_cq_op(&rhp->rdev, &chp->cq, cq_op, 0);
345 spin_unlock_irqrestore(&chp->lock, flag);
346 if (err < 0)
347 pr_err("Error %d rearming CQID 0x%x\n", err, chp->cq.cqid);
348 if (err > 0 && !(flags & IB_CQ_REPORT_MISSED_EVENTS))
349 err = 0;
350 return err;
351 }
352
353 static int iwch_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
354 {
355 int len = vma->vm_end - vma->vm_start;
356 u32 key = vma->vm_pgoff << PAGE_SHIFT;
357 struct cxio_rdev *rdev_p;
358 int ret = 0;
359 struct iwch_mm_entry *mm;
360 struct iwch_ucontext *ucontext;
361 u64 addr;
362
363 pr_debug("%s pgoff 0x%lx key 0x%x len %d\n", __func__, vma->vm_pgoff,
364 key, len);
365
366 if (vma->vm_start & (PAGE_SIZE-1)) {
367 return -EINVAL;
368 }
369
370 rdev_p = &(to_iwch_dev(context->device)->rdev);
371 ucontext = to_iwch_ucontext(context);
372
373 mm = remove_mmap(ucontext, key, len);
374 if (!mm)
375 return -EINVAL;
376 addr = mm->addr;
377 kfree(mm);
378
379 if ((addr >= rdev_p->rnic_info.udbell_physbase) &&
380 (addr < (rdev_p->rnic_info.udbell_physbase +
381 rdev_p->rnic_info.udbell_len))) {
382
383 /*
384 * Map T3 DB register.
385 */
386 if (vma->vm_flags & VM_READ) {
387 return -EPERM;
388 }
389
390 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
391 vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
392 vma->vm_flags &= ~VM_MAYREAD;
393 ret = io_remap_pfn_range(vma, vma->vm_start,
394 addr >> PAGE_SHIFT,
395 len, vma->vm_page_prot);
396 } else {
397
398 /*
399 * Map WQ or CQ contig dma memory...
400 */
401 ret = remap_pfn_range(vma, vma->vm_start,
402 addr >> PAGE_SHIFT,
403 len, vma->vm_page_prot);
404 }
405
406 return ret;
407 }
408
409 static int iwch_deallocate_pd(struct ib_pd *pd)
410 {
411 struct iwch_dev *rhp;
412 struct iwch_pd *php;
413
414 php = to_iwch_pd(pd);
415 rhp = php->rhp;
416 pr_debug("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
417 cxio_hal_put_pdid(rhp->rdev.rscp, php->pdid);
418 kfree(php);
419 return 0;
420 }
421
422 static struct ib_pd *iwch_allocate_pd(struct ib_device *ibdev,
423 struct ib_ucontext *context,
424 struct ib_udata *udata)
425 {
426 struct iwch_pd *php;
427 u32 pdid;
428 struct iwch_dev *rhp;
429
430 pr_debug("%s ibdev %p\n", __func__, ibdev);
431 rhp = (struct iwch_dev *) ibdev;
432 pdid = cxio_hal_get_pdid(rhp->rdev.rscp);
433 if (!pdid)
434 return ERR_PTR(-EINVAL);
435 php = kzalloc(sizeof(*php), GFP_KERNEL);
436 if (!php) {
437 cxio_hal_put_pdid(rhp->rdev.rscp, pdid);
438 return ERR_PTR(-ENOMEM);
439 }
440 php->pdid = pdid;
441 php->rhp = rhp;
442 if (context) {
443 if (ib_copy_to_udata(udata, &php->pdid, sizeof (__u32))) {
444 iwch_deallocate_pd(&php->ibpd);
445 return ERR_PTR(-EFAULT);
446 }
447 }
448 pr_debug("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
449 return &php->ibpd;
450 }
451
452 static int iwch_dereg_mr(struct ib_mr *ib_mr)
453 {
454 struct iwch_dev *rhp;
455 struct iwch_mr *mhp;
456 u32 mmid;
457
458 pr_debug("%s ib_mr %p\n", __func__, ib_mr);
459
460 mhp = to_iwch_mr(ib_mr);
461 kfree(mhp->pages);
462 rhp = mhp->rhp;
463 mmid = mhp->attr.stag >> 8;
464 cxio_dereg_mem(&rhp->rdev, mhp->attr.stag, mhp->attr.pbl_size,
465 mhp->attr.pbl_addr);
466 iwch_free_pbl(mhp);
467 remove_handle(rhp, &rhp->mmidr, mmid);
468 if (mhp->kva)
469 kfree((void *) (unsigned long) mhp->kva);
470 if (mhp->umem)
471 ib_umem_release(mhp->umem);
472 pr_debug("%s mmid 0x%x ptr %p\n", __func__, mmid, mhp);
473 kfree(mhp);
474 return 0;
475 }
476
477 static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
478 {
479 const u64 total_size = 0xffffffff;
480 const u64 mask = (total_size + PAGE_SIZE - 1) & PAGE_MASK;
481 struct iwch_pd *php = to_iwch_pd(pd);
482 struct iwch_dev *rhp = php->rhp;
483 struct iwch_mr *mhp;
484 __be64 *page_list;
485 int shift = 26, npages, ret, i;
486
487 pr_debug("%s ib_pd %p\n", __func__, pd);
488
489 /*
490 * T3 only supports 32 bits of size.
491 */
492 if (sizeof(phys_addr_t) > 4) {
493 pr_warn_once("Cannot support dma_mrs on this platform\n");
494 return ERR_PTR(-ENOTSUPP);
495 }
496
497 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
498 if (!mhp)
499 return ERR_PTR(-ENOMEM);
500
501 mhp->rhp = rhp;
502
503 npages = (total_size + (1ULL << shift) - 1) >> shift;
504 if (!npages) {
505 ret = -EINVAL;
506 goto err;
507 }
508
509 page_list = kmalloc_array(npages, sizeof(u64), GFP_KERNEL);
510 if (!page_list) {
511 ret = -ENOMEM;
512 goto err;
513 }
514
515 for (i = 0; i < npages; i++)
516 page_list[i] = cpu_to_be64((u64)i << shift);
517
518 pr_debug("%s mask 0x%llx shift %d len %lld pbl_size %d\n",
519 __func__, mask, shift, total_size, npages);
520
521 ret = iwch_alloc_pbl(mhp, npages);
522 if (ret) {
523 kfree(page_list);
524 goto err_pbl;
525 }
526
527 ret = iwch_write_pbl(mhp, page_list, npages, 0);
528 kfree(page_list);
529 if (ret)
530 goto err_pbl;
531
532 mhp->attr.pdid = php->pdid;
533 mhp->attr.zbva = 0;
534
535 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
536 mhp->attr.va_fbo = 0;
537 mhp->attr.page_size = shift - 12;
538
539 mhp->attr.len = (u32) total_size;
540 mhp->attr.pbl_size = npages;
541 ret = iwch_register_mem(rhp, php, mhp, shift);
542 if (ret)
543 goto err_pbl;
544
545 return &mhp->ibmr;
546
547 err_pbl:
548 iwch_free_pbl(mhp);
549
550 err:
551 kfree(mhp);
552 return ERR_PTR(ret);
553 }
554
555 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
556 u64 virt, int acc, struct ib_udata *udata)
557 {
558 __be64 *pages;
559 int shift, n, len;
560 int i, k, entry;
561 int err = 0;
562 struct iwch_dev *rhp;
563 struct iwch_pd *php;
564 struct iwch_mr *mhp;
565 struct iwch_reg_user_mr_resp uresp;
566 struct scatterlist *sg;
567 pr_debug("%s ib_pd %p\n", __func__, pd);
568
569 php = to_iwch_pd(pd);
570 rhp = php->rhp;
571 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
572 if (!mhp)
573 return ERR_PTR(-ENOMEM);
574
575 mhp->rhp = rhp;
576
577 mhp->umem = ib_umem_get(pd->uobject->context, start, length, acc, 0);
578 if (IS_ERR(mhp->umem)) {
579 err = PTR_ERR(mhp->umem);
580 kfree(mhp);
581 return ERR_PTR(err);
582 }
583
584 shift = mhp->umem->page_shift;
585
586 n = mhp->umem->nmap;
587
588 err = iwch_alloc_pbl(mhp, n);
589 if (err)
590 goto err;
591
592 pages = (__be64 *) __get_free_page(GFP_KERNEL);
593 if (!pages) {
594 err = -ENOMEM;
595 goto err_pbl;
596 }
597
598 i = n = 0;
599
600 for_each_sg(mhp->umem->sg_head.sgl, sg, mhp->umem->nmap, entry) {
601 len = sg_dma_len(sg) >> shift;
602 for (k = 0; k < len; ++k) {
603 pages[i++] = cpu_to_be64(sg_dma_address(sg) +
604 (k << shift));
605 if (i == PAGE_SIZE / sizeof *pages) {
606 err = iwch_write_pbl(mhp, pages, i, n);
607 if (err)
608 goto pbl_done;
609 n += i;
610 i = 0;
611 }
612 }
613 }
614
615 if (i)
616 err = iwch_write_pbl(mhp, pages, i, n);
617
618 pbl_done:
619 free_page((unsigned long) pages);
620 if (err)
621 goto err_pbl;
622
623 mhp->attr.pdid = php->pdid;
624 mhp->attr.zbva = 0;
625 mhp->attr.perms = iwch_ib_to_tpt_access(acc);
626 mhp->attr.va_fbo = virt;
627 mhp->attr.page_size = shift - 12;
628 mhp->attr.len = (u32) length;
629
630 err = iwch_register_mem(rhp, php, mhp, shift);
631 if (err)
632 goto err_pbl;
633
634 if (udata && !t3a_device(rhp)) {
635 uresp.pbl_addr = (mhp->attr.pbl_addr -
636 rhp->rdev.rnic_info.pbl_base) >> 3;
637 pr_debug("%s user resp pbl_addr 0x%x\n", __func__,
638 uresp.pbl_addr);
639
640 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
641 iwch_dereg_mr(&mhp->ibmr);
642 err = -EFAULT;
643 goto err;
644 }
645 }
646
647 return &mhp->ibmr;
648
649 err_pbl:
650 iwch_free_pbl(mhp);
651
652 err:
653 ib_umem_release(mhp->umem);
654 kfree(mhp);
655 return ERR_PTR(err);
656 }
657
658 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
659 struct ib_udata *udata)
660 {
661 struct iwch_dev *rhp;
662 struct iwch_pd *php;
663 struct iwch_mw *mhp;
664 u32 mmid;
665 u32 stag = 0;
666 int ret;
667
668 if (type != IB_MW_TYPE_1)
669 return ERR_PTR(-EINVAL);
670
671 php = to_iwch_pd(pd);
672 rhp = php->rhp;
673 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
674 if (!mhp)
675 return ERR_PTR(-ENOMEM);
676 ret = cxio_allocate_window(&rhp->rdev, &stag, php->pdid);
677 if (ret) {
678 kfree(mhp);
679 return ERR_PTR(ret);
680 }
681 mhp->rhp = rhp;
682 mhp->attr.pdid = php->pdid;
683 mhp->attr.type = TPT_MW;
684 mhp->attr.stag = stag;
685 mmid = (stag) >> 8;
686 mhp->ibmw.rkey = stag;
687 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) {
688 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
689 kfree(mhp);
690 return ERR_PTR(-ENOMEM);
691 }
692 pr_debug("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
693 return &(mhp->ibmw);
694 }
695
696 static int iwch_dealloc_mw(struct ib_mw *mw)
697 {
698 struct iwch_dev *rhp;
699 struct iwch_mw *mhp;
700 u32 mmid;
701
702 mhp = to_iwch_mw(mw);
703 rhp = mhp->rhp;
704 mmid = (mw->rkey) >> 8;
705 cxio_deallocate_window(&rhp->rdev, mhp->attr.stag);
706 remove_handle(rhp, &rhp->mmidr, mmid);
707 pr_debug("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp);
708 kfree(mhp);
709 return 0;
710 }
711
712 static struct ib_mr *iwch_alloc_mr(struct ib_pd *pd,
713 enum ib_mr_type mr_type,
714 u32 max_num_sg)
715 {
716 struct iwch_dev *rhp;
717 struct iwch_pd *php;
718 struct iwch_mr *mhp;
719 u32 mmid;
720 u32 stag = 0;
721 int ret = 0;
722
723 if (mr_type != IB_MR_TYPE_MEM_REG ||
724 max_num_sg > T3_MAX_FASTREG_DEPTH)
725 return ERR_PTR(-EINVAL);
726
727 php = to_iwch_pd(pd);
728 rhp = php->rhp;
729 mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
730 if (!mhp)
731 goto err;
732
733 mhp->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
734 if (!mhp->pages) {
735 ret = -ENOMEM;
736 goto pl_err;
737 }
738
739 mhp->rhp = rhp;
740 ret = iwch_alloc_pbl(mhp, max_num_sg);
741 if (ret)
742 goto err1;
743 mhp->attr.pbl_size = max_num_sg;
744 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
745 mhp->attr.pbl_size, mhp->attr.pbl_addr);
746 if (ret)
747 goto err2;
748 mhp->attr.pdid = php->pdid;
749 mhp->attr.type = TPT_NON_SHARED_MR;
750 mhp->attr.stag = stag;
751 mhp->attr.state = 1;
752 mmid = (stag) >> 8;
753 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
754 if (insert_handle(rhp, &rhp->mmidr, mhp, mmid))
755 goto err3;
756
757 pr_debug("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
758 return &(mhp->ibmr);
759 err3:
760 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
761 mhp->attr.pbl_addr);
762 err2:
763 iwch_free_pbl(mhp);
764 err1:
765 kfree(mhp->pages);
766 pl_err:
767 kfree(mhp);
768 err:
769 return ERR_PTR(ret);
770 }
771
772 static int iwch_set_page(struct ib_mr *ibmr, u64 addr)
773 {
774 struct iwch_mr *mhp = to_iwch_mr(ibmr);
775
776 if (unlikely(mhp->npages == mhp->attr.pbl_size))
777 return -ENOMEM;
778
779 mhp->pages[mhp->npages++] = addr;
780
781 return 0;
782 }
783
784 static int iwch_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
785 int sg_nents, unsigned int *sg_offset)
786 {
787 struct iwch_mr *mhp = to_iwch_mr(ibmr);
788
789 mhp->npages = 0;
790
791 return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, iwch_set_page);
792 }
793
794 static int iwch_destroy_qp(struct ib_qp *ib_qp)
795 {
796 struct iwch_dev *rhp;
797 struct iwch_qp *qhp;
798 struct iwch_qp_attributes attrs;
799 struct iwch_ucontext *ucontext;
800
801 qhp = to_iwch_qp(ib_qp);
802 rhp = qhp->rhp;
803
804 attrs.next_state = IWCH_QP_STATE_ERROR;
805 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
806 wait_event(qhp->wait, !qhp->ep);
807
808 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
809
810 atomic_dec(&qhp->refcnt);
811 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
812
813 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
814 : NULL;
815 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
816 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
817
818 pr_debug("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
819 ib_qp, qhp->wq.qpid, qhp);
820 kfree(qhp);
821 return 0;
822 }
823
824 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
825 struct ib_qp_init_attr *attrs,
826 struct ib_udata *udata)
827 {
828 struct iwch_dev *rhp;
829 struct iwch_qp *qhp;
830 struct iwch_pd *php;
831 struct iwch_cq *schp;
832 struct iwch_cq *rchp;
833 struct iwch_create_qp_resp uresp;
834 int wqsize, sqsize, rqsize;
835 struct iwch_ucontext *ucontext;
836
837 pr_debug("%s ib_pd %p\n", __func__, pd);
838 if (attrs->qp_type != IB_QPT_RC)
839 return ERR_PTR(-EINVAL);
840 php = to_iwch_pd(pd);
841 rhp = php->rhp;
842 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
843 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
844 if (!schp || !rchp)
845 return ERR_PTR(-EINVAL);
846
847 /* The RQT size must be # of entries + 1 rounded up to a power of two */
848 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
849 if (rqsize == attrs->cap.max_recv_wr)
850 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
851
852 /* T3 doesn't support RQT depth < 16 */
853 if (rqsize < 16)
854 rqsize = 16;
855
856 if (rqsize > T3_MAX_RQ_SIZE)
857 return ERR_PTR(-EINVAL);
858
859 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
860 return ERR_PTR(-EINVAL);
861
862 /*
863 * NOTE: The SQ and total WQ sizes don't need to be
864 * a power of two. However, all the code assumes
865 * they are. EG: Q_FREECNT() and friends.
866 */
867 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
868 wqsize = roundup_pow_of_two(rqsize + sqsize);
869
870 /*
871 * Kernel users need more wq space for fastreg WRs which can take
872 * 2 WR fragments.
873 */
874 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
875 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
876 wqsize = roundup_pow_of_two(rqsize +
877 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
878 pr_debug("%s wqsize %d sqsize %d rqsize %d\n", __func__,
879 wqsize, sqsize, rqsize);
880 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
881 if (!qhp)
882 return ERR_PTR(-ENOMEM);
883 qhp->wq.size_log2 = ilog2(wqsize);
884 qhp->wq.rq_size_log2 = ilog2(rqsize);
885 qhp->wq.sq_size_log2 = ilog2(sqsize);
886 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
887 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
888 kfree(qhp);
889 return ERR_PTR(-ENOMEM);
890 }
891
892 attrs->cap.max_recv_wr = rqsize - 1;
893 attrs->cap.max_send_wr = sqsize;
894 attrs->cap.max_inline_data = T3_MAX_INLINE;
895
896 qhp->rhp = rhp;
897 qhp->attr.pd = php->pdid;
898 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
899 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
900 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
901 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
902 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
903 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
904 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
905 qhp->attr.state = IWCH_QP_STATE_IDLE;
906 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
907
908 /*
909 * XXX - These don't get passed in from the openib user
910 * at create time. The CM sets them via a QP modify.
911 * Need to fix... I think the CM should
912 */
913 qhp->attr.enable_rdma_read = 1;
914 qhp->attr.enable_rdma_write = 1;
915 qhp->attr.enable_bind = 1;
916 qhp->attr.max_ord = 1;
917 qhp->attr.max_ird = 1;
918
919 spin_lock_init(&qhp->lock);
920 init_waitqueue_head(&qhp->wait);
921 atomic_set(&qhp->refcnt, 1);
922
923 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
924 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
925 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
926 kfree(qhp);
927 return ERR_PTR(-ENOMEM);
928 }
929
930 if (udata) {
931
932 struct iwch_mm_entry *mm1, *mm2;
933
934 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
935 if (!mm1) {
936 iwch_destroy_qp(&qhp->ibqp);
937 return ERR_PTR(-ENOMEM);
938 }
939
940 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
941 if (!mm2) {
942 kfree(mm1);
943 iwch_destroy_qp(&qhp->ibqp);
944 return ERR_PTR(-ENOMEM);
945 }
946
947 uresp.qpid = qhp->wq.qpid;
948 uresp.size_log2 = qhp->wq.size_log2;
949 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
950 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
951 spin_lock(&ucontext->mmap_lock);
952 uresp.key = ucontext->key;
953 ucontext->key += PAGE_SIZE;
954 uresp.db_key = ucontext->key;
955 ucontext->key += PAGE_SIZE;
956 spin_unlock(&ucontext->mmap_lock);
957 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
958 kfree(mm1);
959 kfree(mm2);
960 iwch_destroy_qp(&qhp->ibqp);
961 return ERR_PTR(-EFAULT);
962 }
963 mm1->key = uresp.key;
964 mm1->addr = virt_to_phys(qhp->wq.queue);
965 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
966 insert_mmap(ucontext, mm1);
967 mm2->key = uresp.db_key;
968 mm2->addr = qhp->wq.udb & PAGE_MASK;
969 mm2->len = PAGE_SIZE;
970 insert_mmap(ucontext, mm2);
971 }
972 qhp->ibqp.qp_num = qhp->wq.qpid;
973 init_timer(&(qhp->timer));
974 pr_debug("%s sq_num_entries %d, rq_num_entries %d qpid 0x%0x qhp %p dma_addr 0x%llx size %d rq_addr 0x%x\n",
975 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
976 qhp->wq.qpid, qhp, (unsigned long long)qhp->wq.dma_addr,
977 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
978 return &qhp->ibqp;
979 }
980
981 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
982 int attr_mask, struct ib_udata *udata)
983 {
984 struct iwch_dev *rhp;
985 struct iwch_qp *qhp;
986 enum iwch_qp_attr_mask mask = 0;
987 struct iwch_qp_attributes attrs;
988
989 pr_debug("%s ib_qp %p\n", __func__, ibqp);
990
991 /* iwarp does not support the RTR state */
992 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
993 attr_mask &= ~IB_QP_STATE;
994
995 /* Make sure we still have something left to do */
996 if (!attr_mask)
997 return 0;
998
999 memset(&attrs, 0, sizeof attrs);
1000 qhp = to_iwch_qp(ibqp);
1001 rhp = qhp->rhp;
1002
1003 attrs.next_state = iwch_convert_state(attr->qp_state);
1004 attrs.enable_rdma_read = (attr->qp_access_flags &
1005 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1006 attrs.enable_rdma_write = (attr->qp_access_flags &
1007 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1008 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1009
1010
1011 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1012 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1013 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1014 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1015 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1016
1017 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1018 }
1019
1020 void iwch_qp_add_ref(struct ib_qp *qp)
1021 {
1022 pr_debug("%s ib_qp %p\n", __func__, qp);
1023 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1024 }
1025
1026 void iwch_qp_rem_ref(struct ib_qp *qp)
1027 {
1028 pr_debug("%s ib_qp %p\n", __func__, qp);
1029 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1030 wake_up(&(to_iwch_qp(qp)->wait));
1031 }
1032
1033 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
1034 {
1035 pr_debug("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1036 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1037 }
1038
1039
1040 static int iwch_query_pkey(struct ib_device *ibdev,
1041 u8 port, u16 index, u16 * pkey)
1042 {
1043 pr_debug("%s ibdev %p\n", __func__, ibdev);
1044 *pkey = 0;
1045 return 0;
1046 }
1047
1048 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1049 int index, union ib_gid *gid)
1050 {
1051 struct iwch_dev *dev;
1052
1053 pr_debug("%s ibdev %p, port %d, index %d, gid %p\n",
1054 __func__, ibdev, port, index, gid);
1055 dev = to_iwch_dev(ibdev);
1056 BUG_ON(port == 0 || port > 2);
1057 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1058 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1059 return 0;
1060 }
1061
1062 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1063 {
1064 struct ethtool_drvinfo info;
1065 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1066 char *cp, *next;
1067 unsigned fw_maj, fw_min, fw_mic;
1068
1069 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1070
1071 next = info.fw_version + 1;
1072 cp = strsep(&next, ".");
1073 sscanf(cp, "%i", &fw_maj);
1074 cp = strsep(&next, ".");
1075 sscanf(cp, "%i", &fw_min);
1076 cp = strsep(&next, ".");
1077 sscanf(cp, "%i", &fw_mic);
1078
1079 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1080 (fw_mic & 0xffff);
1081 }
1082
1083 static int iwch_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
1084 struct ib_udata *uhw)
1085 {
1086
1087 struct iwch_dev *dev;
1088
1089 pr_debug("%s ibdev %p\n", __func__, ibdev);
1090
1091 if (uhw->inlen || uhw->outlen)
1092 return -EINVAL;
1093
1094 dev = to_iwch_dev(ibdev);
1095 memset(props, 0, sizeof *props);
1096 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1097 props->hw_ver = dev->rdev.t3cdev_p->type;
1098 props->fw_ver = fw_vers_string_to_u64(dev);
1099 props->device_cap_flags = dev->device_cap_flags;
1100 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1101 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1102 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1103 props->max_mr_size = dev->attr.max_mr_size;
1104 props->max_qp = dev->attr.max_qps;
1105 props->max_qp_wr = dev->attr.max_wrs;
1106 props->max_sge = dev->attr.max_sge_per_wr;
1107 props->max_sge_rd = 1;
1108 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1109 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1110 props->max_cq = dev->attr.max_cqs;
1111 props->max_cqe = dev->attr.max_cqes_per_cq;
1112 props->max_mr = dev->attr.max_mem_regs;
1113 props->max_pd = dev->attr.max_pds;
1114 props->local_ca_ack_delay = 0;
1115 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1116
1117 return 0;
1118 }
1119
1120 static int iwch_query_port(struct ib_device *ibdev,
1121 u8 port, struct ib_port_attr *props)
1122 {
1123 struct iwch_dev *dev;
1124 struct net_device *netdev;
1125 struct in_device *inetdev;
1126
1127 pr_debug("%s ibdev %p\n", __func__, ibdev);
1128
1129 dev = to_iwch_dev(ibdev);
1130 netdev = dev->rdev.port_info.lldevs[port-1];
1131
1132 /* props being zeroed by the caller, avoid zeroing it here */
1133 props->max_mtu = IB_MTU_4096;
1134 props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
1135
1136 if (!netif_carrier_ok(netdev))
1137 props->state = IB_PORT_DOWN;
1138 else {
1139 inetdev = in_dev_get(netdev);
1140 if (inetdev) {
1141 if (inetdev->ifa_list)
1142 props->state = IB_PORT_ACTIVE;
1143 else
1144 props->state = IB_PORT_INIT;
1145 in_dev_put(inetdev);
1146 } else
1147 props->state = IB_PORT_INIT;
1148 }
1149
1150 props->port_cap_flags =
1151 IB_PORT_CM_SUP |
1152 IB_PORT_SNMP_TUNNEL_SUP |
1153 IB_PORT_REINIT_SUP |
1154 IB_PORT_DEVICE_MGMT_SUP |
1155 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1156 props->gid_tbl_len = 1;
1157 props->pkey_tbl_len = 1;
1158 props->active_width = 2;
1159 props->active_speed = IB_SPEED_DDR;
1160 props->max_msg_sz = -1;
1161
1162 return 0;
1163 }
1164
1165 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1166 char *buf)
1167 {
1168 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1169 ibdev.dev);
1170 pr_debug("%s dev 0x%p\n", __func__, dev);
1171 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1172 }
1173
1174 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1175 char *buf)
1176 {
1177 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1178 ibdev.dev);
1179 struct ethtool_drvinfo info;
1180 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1181
1182 pr_debug("%s dev 0x%p\n", __func__, dev);
1183 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1184 return sprintf(buf, "%s\n", info.driver);
1185 }
1186
1187 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1188 char *buf)
1189 {
1190 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1191 ibdev.dev);
1192 pr_debug("%s dev 0x%p\n", __func__, dev);
1193 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1194 iwch_dev->rdev.rnic_info.pdev->device);
1195 }
1196
1197 enum counters {
1198 IPINRECEIVES,
1199 IPINHDRERRORS,
1200 IPINADDRERRORS,
1201 IPINUNKNOWNPROTOS,
1202 IPINDISCARDS,
1203 IPINDELIVERS,
1204 IPOUTREQUESTS,
1205 IPOUTDISCARDS,
1206 IPOUTNOROUTES,
1207 IPREASMTIMEOUT,
1208 IPREASMREQDS,
1209 IPREASMOKS,
1210 IPREASMFAILS,
1211 TCPACTIVEOPENS,
1212 TCPPASSIVEOPENS,
1213 TCPATTEMPTFAILS,
1214 TCPESTABRESETS,
1215 TCPCURRESTAB,
1216 TCPINSEGS,
1217 TCPOUTSEGS,
1218 TCPRETRANSSEGS,
1219 TCPINERRS,
1220 TCPOUTRSTS,
1221 TCPRTOMIN,
1222 TCPRTOMAX,
1223 NR_COUNTERS
1224 };
1225
1226 static const char * const names[] = {
1227 [IPINRECEIVES] = "ipInReceives",
1228 [IPINHDRERRORS] = "ipInHdrErrors",
1229 [IPINADDRERRORS] = "ipInAddrErrors",
1230 [IPINUNKNOWNPROTOS] = "ipInUnknownProtos",
1231 [IPINDISCARDS] = "ipInDiscards",
1232 [IPINDELIVERS] = "ipInDelivers",
1233 [IPOUTREQUESTS] = "ipOutRequests",
1234 [IPOUTDISCARDS] = "ipOutDiscards",
1235 [IPOUTNOROUTES] = "ipOutNoRoutes",
1236 [IPREASMTIMEOUT] = "ipReasmTimeout",
1237 [IPREASMREQDS] = "ipReasmReqds",
1238 [IPREASMOKS] = "ipReasmOKs",
1239 [IPREASMFAILS] = "ipReasmFails",
1240 [TCPACTIVEOPENS] = "tcpActiveOpens",
1241 [TCPPASSIVEOPENS] = "tcpPassiveOpens",
1242 [TCPATTEMPTFAILS] = "tcpAttemptFails",
1243 [TCPESTABRESETS] = "tcpEstabResets",
1244 [TCPCURRESTAB] = "tcpCurrEstab",
1245 [TCPINSEGS] = "tcpInSegs",
1246 [TCPOUTSEGS] = "tcpOutSegs",
1247 [TCPRETRANSSEGS] = "tcpRetransSegs",
1248 [TCPINERRS] = "tcpInErrs",
1249 [TCPOUTRSTS] = "tcpOutRsts",
1250 [TCPRTOMIN] = "tcpRtoMin",
1251 [TCPRTOMAX] = "tcpRtoMax",
1252 };
1253
1254 static struct rdma_hw_stats *iwch_alloc_stats(struct ib_device *ibdev,
1255 u8 port_num)
1256 {
1257 BUILD_BUG_ON(ARRAY_SIZE(names) != NR_COUNTERS);
1258
1259 /* Our driver only supports device level stats */
1260 if (port_num != 0)
1261 return NULL;
1262
1263 return rdma_alloc_hw_stats_struct(names, NR_COUNTERS,
1264 RDMA_HW_STATS_DEFAULT_LIFESPAN);
1265 }
1266
1267 static int iwch_get_mib(struct ib_device *ibdev, struct rdma_hw_stats *stats,
1268 u8 port, int index)
1269 {
1270 struct iwch_dev *dev;
1271 struct tp_mib_stats m;
1272 int ret;
1273
1274 if (port != 0 || !stats)
1275 return -ENOSYS;
1276
1277 pr_debug("%s ibdev %p\n", __func__, ibdev);
1278 dev = to_iwch_dev(ibdev);
1279 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1280 if (ret)
1281 return -ENOSYS;
1282
1283 stats->value[IPINRECEIVES] = ((u64)m.ipInReceive_hi << 32) + m.ipInReceive_lo;
1284 stats->value[IPINHDRERRORS] = ((u64)m.ipInHdrErrors_hi << 32) + m.ipInHdrErrors_lo;
1285 stats->value[IPINADDRERRORS] = ((u64)m.ipInAddrErrors_hi << 32) + m.ipInAddrErrors_lo;
1286 stats->value[IPINUNKNOWNPROTOS] = ((u64)m.ipInUnknownProtos_hi << 32) + m.ipInUnknownProtos_lo;
1287 stats->value[IPINDISCARDS] = ((u64)m.ipInDiscards_hi << 32) + m.ipInDiscards_lo;
1288 stats->value[IPINDELIVERS] = ((u64)m.ipInDelivers_hi << 32) + m.ipInDelivers_lo;
1289 stats->value[IPOUTREQUESTS] = ((u64)m.ipOutRequests_hi << 32) + m.ipOutRequests_lo;
1290 stats->value[IPOUTDISCARDS] = ((u64)m.ipOutDiscards_hi << 32) + m.ipOutDiscards_lo;
1291 stats->value[IPOUTNOROUTES] = ((u64)m.ipOutNoRoutes_hi << 32) + m.ipOutNoRoutes_lo;
1292 stats->value[IPREASMTIMEOUT] = m.ipReasmTimeout;
1293 stats->value[IPREASMREQDS] = m.ipReasmReqds;
1294 stats->value[IPREASMOKS] = m.ipReasmOKs;
1295 stats->value[IPREASMFAILS] = m.ipReasmFails;
1296 stats->value[TCPACTIVEOPENS] = m.tcpActiveOpens;
1297 stats->value[TCPPASSIVEOPENS] = m.tcpPassiveOpens;
1298 stats->value[TCPATTEMPTFAILS] = m.tcpAttemptFails;
1299 stats->value[TCPESTABRESETS] = m.tcpEstabResets;
1300 stats->value[TCPCURRESTAB] = m.tcpOutRsts;
1301 stats->value[TCPINSEGS] = m.tcpCurrEstab;
1302 stats->value[TCPOUTSEGS] = ((u64)m.tcpInSegs_hi << 32) + m.tcpInSegs_lo;
1303 stats->value[TCPRETRANSSEGS] = ((u64)m.tcpOutSegs_hi << 32) + m.tcpOutSegs_lo;
1304 stats->value[TCPINERRS] = ((u64)m.tcpRetransSeg_hi << 32) + m.tcpRetransSeg_lo,
1305 stats->value[TCPOUTRSTS] = ((u64)m.tcpInErrs_hi << 32) + m.tcpInErrs_lo;
1306 stats->value[TCPRTOMIN] = m.tcpRtoMin;
1307 stats->value[TCPRTOMAX] = m.tcpRtoMax;
1308
1309 return stats->num_counters;
1310 }
1311
1312 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1313 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1314 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1315
1316 static struct device_attribute *iwch_class_attributes[] = {
1317 &dev_attr_hw_rev,
1318 &dev_attr_hca_type,
1319 &dev_attr_board_id,
1320 };
1321
1322 static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
1323 struct ib_port_immutable *immutable)
1324 {
1325 struct ib_port_attr attr;
1326 int err;
1327
1328 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
1329
1330 err = ib_query_port(ibdev, port_num, &attr);
1331 if (err)
1332 return err;
1333
1334 immutable->pkey_tbl_len = attr.pkey_tbl_len;
1335 immutable->gid_tbl_len = attr.gid_tbl_len;
1336
1337 return 0;
1338 }
1339
1340 static void get_dev_fw_ver_str(struct ib_device *ibdev, char *str,
1341 size_t str_len)
1342 {
1343 struct iwch_dev *iwch_dev = to_iwch_dev(ibdev);
1344 struct ethtool_drvinfo info;
1345 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1346
1347 pr_debug("%s dev 0x%p\n", __func__, iwch_dev);
1348 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1349 snprintf(str, str_len, "%s", info.fw_version);
1350 }
1351
1352 int iwch_register_device(struct iwch_dev *dev)
1353 {
1354 int ret;
1355 int i;
1356
1357 pr_debug("%s iwch_dev %p\n", __func__, dev);
1358 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1359 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1360 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1361 dev->ibdev.owner = THIS_MODULE;
1362 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1363 IB_DEVICE_MEM_WINDOW |
1364 IB_DEVICE_MEM_MGT_EXTENSIONS;
1365
1366 /* cxgb3 supports STag 0. */
1367 dev->ibdev.local_dma_lkey = 0;
1368
1369 dev->ibdev.uverbs_cmd_mask =
1370 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1371 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1372 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1373 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1374 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1375 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1376 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1377 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1378 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1379 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1380 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1381 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1382 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1383 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1384 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1385 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1386 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1387 dev->ibdev.node_type = RDMA_NODE_RNIC;
1388 BUILD_BUG_ON(sizeof(IWCH_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
1389 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1390 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1391 dev->ibdev.num_comp_vectors = 1;
1392 dev->ibdev.dev.parent = &dev->rdev.rnic_info.pdev->dev;
1393 dev->ibdev.query_device = iwch_query_device;
1394 dev->ibdev.query_port = iwch_query_port;
1395 dev->ibdev.query_pkey = iwch_query_pkey;
1396 dev->ibdev.query_gid = iwch_query_gid;
1397 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1398 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1399 dev->ibdev.mmap = iwch_mmap;
1400 dev->ibdev.alloc_pd = iwch_allocate_pd;
1401 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1402 dev->ibdev.create_ah = iwch_ah_create;
1403 dev->ibdev.destroy_ah = iwch_ah_destroy;
1404 dev->ibdev.create_qp = iwch_create_qp;
1405 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1406 dev->ibdev.destroy_qp = iwch_destroy_qp;
1407 dev->ibdev.create_cq = iwch_create_cq;
1408 dev->ibdev.destroy_cq = iwch_destroy_cq;
1409 dev->ibdev.resize_cq = iwch_resize_cq;
1410 dev->ibdev.poll_cq = iwch_poll_cq;
1411 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1412 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1413 dev->ibdev.dereg_mr = iwch_dereg_mr;
1414 dev->ibdev.alloc_mw = iwch_alloc_mw;
1415 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1416 dev->ibdev.alloc_mr = iwch_alloc_mr;
1417 dev->ibdev.map_mr_sg = iwch_map_mr_sg;
1418 dev->ibdev.attach_mcast = iwch_multicast_attach;
1419 dev->ibdev.detach_mcast = iwch_multicast_detach;
1420 dev->ibdev.process_mad = iwch_process_mad;
1421 dev->ibdev.req_notify_cq = iwch_arm_cq;
1422 dev->ibdev.post_send = iwch_post_send;
1423 dev->ibdev.post_recv = iwch_post_receive;
1424 dev->ibdev.alloc_hw_stats = iwch_alloc_stats;
1425 dev->ibdev.get_hw_stats = iwch_get_mib;
1426 dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
1427 dev->ibdev.get_port_immutable = iwch_port_immutable;
1428 dev->ibdev.get_dev_fw_str = get_dev_fw_ver_str;
1429
1430 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1431 if (!dev->ibdev.iwcm)
1432 return -ENOMEM;
1433
1434 dev->ibdev.iwcm->connect = iwch_connect;
1435 dev->ibdev.iwcm->accept = iwch_accept_cr;
1436 dev->ibdev.iwcm->reject = iwch_reject_cr;
1437 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1438 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1439 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1440 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1441 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1442 memcpy(dev->ibdev.iwcm->ifname, dev->rdev.t3cdev_p->lldev->name,
1443 sizeof(dev->ibdev.iwcm->ifname));
1444
1445 ret = ib_register_device(&dev->ibdev, NULL);
1446 if (ret)
1447 goto bail1;
1448
1449 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1450 ret = device_create_file(&dev->ibdev.dev,
1451 iwch_class_attributes[i]);
1452 if (ret) {
1453 goto bail2;
1454 }
1455 }
1456 return 0;
1457 bail2:
1458 ib_unregister_device(&dev->ibdev);
1459 bail1:
1460 kfree(dev->ibdev.iwcm);
1461 return ret;
1462 }
1463
1464 void iwch_unregister_device(struct iwch_dev *dev)
1465 {
1466 int i;
1467
1468 pr_debug("%s iwch_dev %p\n", __func__, dev);
1469 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1470 device_remove_file(&dev->ibdev.dev,
1471 iwch_class_attributes[i]);
1472 ib_unregister_device(&dev->ibdev);
1473 kfree(dev->ibdev.iwcm);
1474 return;
1475 }
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