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
iwch_ah_create(struct ib_pd * pd,struct rdma_ah_attr * ah_attr,struct ib_udata * udata)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
iwch_ah_destroy(struct ib_ah * ah)71 static int iwch_ah_destroy(struct ib_ah *ah)
72 {
73 return -ENOSYS;
74 }
75
iwch_multicast_attach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)76 static int iwch_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
77 {
78 return -ENOSYS;
79 }
80
iwch_multicast_detach(struct ib_qp * ibqp,union ib_gid * gid,u16 lid)81 static int iwch_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
82 {
83 return -ENOSYS;
84 }
85
iwch_process_mad(struct ib_device * ibdev,int mad_flags,u8 port_num,const struct ib_wc * in_wc,const struct ib_grh * in_grh,const struct ib_mad_hdr * in_mad,size_t in_mad_size,struct ib_mad_hdr * out_mad,size_t * out_mad_size,u16 * out_mad_pkey_index)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
iwch_dealloc_ucontext(struct ib_ucontext * context)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
iwch_alloc_ucontext(struct ib_device * ibdev,struct ib_udata * udata)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
iwch_destroy_cq(struct ib_cq * ib_cq)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
iwch_create_cq(struct ib_device * ibdev,const struct ib_cq_init_attr * attr,struct ib_ucontext * ib_context,struct ib_udata * udata)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
iwch_resize_cq(struct ib_cq * cq,int cqe,struct ib_udata * udata)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
iwch_arm_cq(struct ib_cq * ibcq,enum ib_cq_notify_flags flags)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
iwch_mmap(struct ib_ucontext * context,struct vm_area_struct * vma)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
iwch_deallocate_pd(struct ib_pd * pd)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
iwch_allocate_pd(struct ib_device * ibdev,struct ib_ucontext * context,struct ib_udata * udata)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
iwch_dereg_mr(struct ib_mr * ib_mr)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
iwch_get_dma_mr(struct ib_pd * pd,int acc)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
iwch_reg_user_mr(struct ib_pd * pd,u64 start,u64 length,u64 virt,int acc,struct ib_udata * udata)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
iwch_alloc_mw(struct ib_pd * pd,enum ib_mw_type type,struct ib_udata * udata)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
iwch_dealloc_mw(struct ib_mw * mw)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
iwch_alloc_mr(struct ib_pd * pd,enum ib_mr_type mr_type,u32 max_num_sg)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 = -ENOMEM;
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 goto pl_err;
736
737 mhp->rhp = rhp;
738 ret = iwch_alloc_pbl(mhp, max_num_sg);
739 if (ret)
740 goto err1;
741 mhp->attr.pbl_size = max_num_sg;
742 ret = cxio_allocate_stag(&rhp->rdev, &stag, php->pdid,
743 mhp->attr.pbl_size, mhp->attr.pbl_addr);
744 if (ret)
745 goto err2;
746 mhp->attr.pdid = php->pdid;
747 mhp->attr.type = TPT_NON_SHARED_MR;
748 mhp->attr.stag = stag;
749 mhp->attr.state = 1;
750 mmid = (stag) >> 8;
751 mhp->ibmr.rkey = mhp->ibmr.lkey = stag;
752 ret = insert_handle(rhp, &rhp->mmidr, mhp, mmid);
753 if (ret)
754 goto err3;
755
756 pr_debug("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag);
757 return &(mhp->ibmr);
758 err3:
759 cxio_dereg_mem(&rhp->rdev, stag, mhp->attr.pbl_size,
760 mhp->attr.pbl_addr);
761 err2:
762 iwch_free_pbl(mhp);
763 err1:
764 kfree(mhp->pages);
765 pl_err:
766 kfree(mhp);
767 err:
768 return ERR_PTR(ret);
769 }
770
iwch_set_page(struct ib_mr * ibmr,u64 addr)771 static int iwch_set_page(struct ib_mr *ibmr, u64 addr)
772 {
773 struct iwch_mr *mhp = to_iwch_mr(ibmr);
774
775 if (unlikely(mhp->npages == mhp->attr.pbl_size))
776 return -ENOMEM;
777
778 mhp->pages[mhp->npages++] = addr;
779
780 return 0;
781 }
782
iwch_map_mr_sg(struct ib_mr * ibmr,struct scatterlist * sg,int sg_nents,unsigned int * sg_offset)783 static int iwch_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
784 int sg_nents, unsigned int *sg_offset)
785 {
786 struct iwch_mr *mhp = to_iwch_mr(ibmr);
787
788 mhp->npages = 0;
789
790 return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, iwch_set_page);
791 }
792
iwch_destroy_qp(struct ib_qp * ib_qp)793 static int iwch_destroy_qp(struct ib_qp *ib_qp)
794 {
795 struct iwch_dev *rhp;
796 struct iwch_qp *qhp;
797 struct iwch_qp_attributes attrs;
798 struct iwch_ucontext *ucontext;
799
800 qhp = to_iwch_qp(ib_qp);
801 rhp = qhp->rhp;
802
803 attrs.next_state = IWCH_QP_STATE_ERROR;
804 iwch_modify_qp(rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 0);
805 wait_event(qhp->wait, !qhp->ep);
806
807 remove_handle(rhp, &rhp->qpidr, qhp->wq.qpid);
808
809 atomic_dec(&qhp->refcnt);
810 wait_event(qhp->wait, !atomic_read(&qhp->refcnt));
811
812 ucontext = ib_qp->uobject ? to_iwch_ucontext(ib_qp->uobject->context)
813 : NULL;
814 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
815 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
816
817 pr_debug("%s ib_qp %p qpid 0x%0x qhp %p\n", __func__,
818 ib_qp, qhp->wq.qpid, qhp);
819 kfree(qhp);
820 return 0;
821 }
822
iwch_create_qp(struct ib_pd * pd,struct ib_qp_init_attr * attrs,struct ib_udata * udata)823 static struct ib_qp *iwch_create_qp(struct ib_pd *pd,
824 struct ib_qp_init_attr *attrs,
825 struct ib_udata *udata)
826 {
827 struct iwch_dev *rhp;
828 struct iwch_qp *qhp;
829 struct iwch_pd *php;
830 struct iwch_cq *schp;
831 struct iwch_cq *rchp;
832 struct iwch_create_qp_resp uresp;
833 int wqsize, sqsize, rqsize;
834 struct iwch_ucontext *ucontext;
835
836 pr_debug("%s ib_pd %p\n", __func__, pd);
837 if (attrs->qp_type != IB_QPT_RC)
838 return ERR_PTR(-EINVAL);
839 php = to_iwch_pd(pd);
840 rhp = php->rhp;
841 schp = get_chp(rhp, ((struct iwch_cq *) attrs->send_cq)->cq.cqid);
842 rchp = get_chp(rhp, ((struct iwch_cq *) attrs->recv_cq)->cq.cqid);
843 if (!schp || !rchp)
844 return ERR_PTR(-EINVAL);
845
846 /* The RQT size must be # of entries + 1 rounded up to a power of two */
847 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr);
848 if (rqsize == attrs->cap.max_recv_wr)
849 rqsize = roundup_pow_of_two(attrs->cap.max_recv_wr+1);
850
851 /* T3 doesn't support RQT depth < 16 */
852 if (rqsize < 16)
853 rqsize = 16;
854
855 if (rqsize > T3_MAX_RQ_SIZE)
856 return ERR_PTR(-EINVAL);
857
858 if (attrs->cap.max_inline_data > T3_MAX_INLINE)
859 return ERR_PTR(-EINVAL);
860
861 /*
862 * NOTE: The SQ and total WQ sizes don't need to be
863 * a power of two. However, all the code assumes
864 * they are. EG: Q_FREECNT() and friends.
865 */
866 sqsize = roundup_pow_of_two(attrs->cap.max_send_wr);
867 wqsize = roundup_pow_of_two(rqsize + sqsize);
868
869 /*
870 * Kernel users need more wq space for fastreg WRs which can take
871 * 2 WR fragments.
872 */
873 ucontext = pd->uobject ? to_iwch_ucontext(pd->uobject->context) : NULL;
874 if (!ucontext && wqsize < (rqsize + (2 * sqsize)))
875 wqsize = roundup_pow_of_two(rqsize +
876 roundup_pow_of_two(attrs->cap.max_send_wr * 2));
877 pr_debug("%s wqsize %d sqsize %d rqsize %d\n", __func__,
878 wqsize, sqsize, rqsize);
879 qhp = kzalloc(sizeof(*qhp), GFP_KERNEL);
880 if (!qhp)
881 return ERR_PTR(-ENOMEM);
882 qhp->wq.size_log2 = ilog2(wqsize);
883 qhp->wq.rq_size_log2 = ilog2(rqsize);
884 qhp->wq.sq_size_log2 = ilog2(sqsize);
885 if (cxio_create_qp(&rhp->rdev, !udata, &qhp->wq,
886 ucontext ? &ucontext->uctx : &rhp->rdev.uctx)) {
887 kfree(qhp);
888 return ERR_PTR(-ENOMEM);
889 }
890
891 attrs->cap.max_recv_wr = rqsize - 1;
892 attrs->cap.max_send_wr = sqsize;
893 attrs->cap.max_inline_data = T3_MAX_INLINE;
894
895 qhp->rhp = rhp;
896 qhp->attr.pd = php->pdid;
897 qhp->attr.scq = ((struct iwch_cq *) attrs->send_cq)->cq.cqid;
898 qhp->attr.rcq = ((struct iwch_cq *) attrs->recv_cq)->cq.cqid;
899 qhp->attr.sq_num_entries = attrs->cap.max_send_wr;
900 qhp->attr.rq_num_entries = attrs->cap.max_recv_wr;
901 qhp->attr.sq_max_sges = attrs->cap.max_send_sge;
902 qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge;
903 qhp->attr.rq_max_sges = attrs->cap.max_recv_sge;
904 qhp->attr.state = IWCH_QP_STATE_IDLE;
905 qhp->attr.next_state = IWCH_QP_STATE_IDLE;
906
907 /*
908 * XXX - These don't get passed in from the openib user
909 * at create time. The CM sets them via a QP modify.
910 * Need to fix... I think the CM should
911 */
912 qhp->attr.enable_rdma_read = 1;
913 qhp->attr.enable_rdma_write = 1;
914 qhp->attr.enable_bind = 1;
915 qhp->attr.max_ord = 1;
916 qhp->attr.max_ird = 1;
917
918 spin_lock_init(&qhp->lock);
919 init_waitqueue_head(&qhp->wait);
920 atomic_set(&qhp->refcnt, 1);
921
922 if (insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.qpid)) {
923 cxio_destroy_qp(&rhp->rdev, &qhp->wq,
924 ucontext ? &ucontext->uctx : &rhp->rdev.uctx);
925 kfree(qhp);
926 return ERR_PTR(-ENOMEM);
927 }
928
929 if (udata) {
930
931 struct iwch_mm_entry *mm1, *mm2;
932
933 mm1 = kmalloc(sizeof *mm1, GFP_KERNEL);
934 if (!mm1) {
935 iwch_destroy_qp(&qhp->ibqp);
936 return ERR_PTR(-ENOMEM);
937 }
938
939 mm2 = kmalloc(sizeof *mm2, GFP_KERNEL);
940 if (!mm2) {
941 kfree(mm1);
942 iwch_destroy_qp(&qhp->ibqp);
943 return ERR_PTR(-ENOMEM);
944 }
945
946 uresp.qpid = qhp->wq.qpid;
947 uresp.size_log2 = qhp->wq.size_log2;
948 uresp.sq_size_log2 = qhp->wq.sq_size_log2;
949 uresp.rq_size_log2 = qhp->wq.rq_size_log2;
950 spin_lock(&ucontext->mmap_lock);
951 uresp.key = ucontext->key;
952 ucontext->key += PAGE_SIZE;
953 uresp.db_key = ucontext->key;
954 ucontext->key += PAGE_SIZE;
955 spin_unlock(&ucontext->mmap_lock);
956 if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
957 kfree(mm1);
958 kfree(mm2);
959 iwch_destroy_qp(&qhp->ibqp);
960 return ERR_PTR(-EFAULT);
961 }
962 mm1->key = uresp.key;
963 mm1->addr = virt_to_phys(qhp->wq.queue);
964 mm1->len = PAGE_ALIGN(wqsize * sizeof (union t3_wr));
965 insert_mmap(ucontext, mm1);
966 mm2->key = uresp.db_key;
967 mm2->addr = qhp->wq.udb & PAGE_MASK;
968 mm2->len = PAGE_SIZE;
969 insert_mmap(ucontext, mm2);
970 }
971 qhp->ibqp.qp_num = qhp->wq.qpid;
972 init_timer(&(qhp->timer));
973 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",
974 __func__, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries,
975 qhp->wq.qpid, qhp, (unsigned long long)qhp->wq.dma_addr,
976 1 << qhp->wq.size_log2, qhp->wq.rq_addr);
977 return &qhp->ibqp;
978 }
979
iwch_ib_modify_qp(struct ib_qp * ibqp,struct ib_qp_attr * attr,int attr_mask,struct ib_udata * udata)980 static int iwch_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
981 int attr_mask, struct ib_udata *udata)
982 {
983 struct iwch_dev *rhp;
984 struct iwch_qp *qhp;
985 enum iwch_qp_attr_mask mask = 0;
986 struct iwch_qp_attributes attrs;
987
988 pr_debug("%s ib_qp %p\n", __func__, ibqp);
989
990 /* iwarp does not support the RTR state */
991 if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR))
992 attr_mask &= ~IB_QP_STATE;
993
994 /* Make sure we still have something left to do */
995 if (!attr_mask)
996 return 0;
997
998 memset(&attrs, 0, sizeof attrs);
999 qhp = to_iwch_qp(ibqp);
1000 rhp = qhp->rhp;
1001
1002 attrs.next_state = iwch_convert_state(attr->qp_state);
1003 attrs.enable_rdma_read = (attr->qp_access_flags &
1004 IB_ACCESS_REMOTE_READ) ? 1 : 0;
1005 attrs.enable_rdma_write = (attr->qp_access_flags &
1006 IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
1007 attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0;
1008
1009
1010 mask |= (attr_mask & IB_QP_STATE) ? IWCH_QP_ATTR_NEXT_STATE : 0;
1011 mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ?
1012 (IWCH_QP_ATTR_ENABLE_RDMA_READ |
1013 IWCH_QP_ATTR_ENABLE_RDMA_WRITE |
1014 IWCH_QP_ATTR_ENABLE_RDMA_BIND) : 0;
1015
1016 return iwch_modify_qp(rhp, qhp, mask, &attrs, 0);
1017 }
1018
iwch_qp_add_ref(struct ib_qp * qp)1019 void iwch_qp_add_ref(struct ib_qp *qp)
1020 {
1021 pr_debug("%s ib_qp %p\n", __func__, qp);
1022 atomic_inc(&(to_iwch_qp(qp)->refcnt));
1023 }
1024
iwch_qp_rem_ref(struct ib_qp * qp)1025 void iwch_qp_rem_ref(struct ib_qp *qp)
1026 {
1027 pr_debug("%s ib_qp %p\n", __func__, qp);
1028 if (atomic_dec_and_test(&(to_iwch_qp(qp)->refcnt)))
1029 wake_up(&(to_iwch_qp(qp)->wait));
1030 }
1031
iwch_get_qp(struct ib_device * dev,int qpn)1032 static struct ib_qp *iwch_get_qp(struct ib_device *dev, int qpn)
1033 {
1034 pr_debug("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn);
1035 return (struct ib_qp *)get_qhp(to_iwch_dev(dev), qpn);
1036 }
1037
1038
iwch_query_pkey(struct ib_device * ibdev,u8 port,u16 index,u16 * pkey)1039 static int iwch_query_pkey(struct ib_device *ibdev,
1040 u8 port, u16 index, u16 * pkey)
1041 {
1042 pr_debug("%s ibdev %p\n", __func__, ibdev);
1043 *pkey = 0;
1044 return 0;
1045 }
1046
iwch_query_gid(struct ib_device * ibdev,u8 port,int index,union ib_gid * gid)1047 static int iwch_query_gid(struct ib_device *ibdev, u8 port,
1048 int index, union ib_gid *gid)
1049 {
1050 struct iwch_dev *dev;
1051
1052 pr_debug("%s ibdev %p, port %d, index %d, gid %p\n",
1053 __func__, ibdev, port, index, gid);
1054 dev = to_iwch_dev(ibdev);
1055 BUG_ON(port == 0 || port > 2);
1056 memset(&(gid->raw[0]), 0, sizeof(gid->raw));
1057 memcpy(&(gid->raw[0]), dev->rdev.port_info.lldevs[port-1]->dev_addr, 6);
1058 return 0;
1059 }
1060
fw_vers_string_to_u64(struct iwch_dev * iwch_dev)1061 static u64 fw_vers_string_to_u64(struct iwch_dev *iwch_dev)
1062 {
1063 struct ethtool_drvinfo info;
1064 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1065 char *cp, *next;
1066 unsigned fw_maj, fw_min, fw_mic;
1067
1068 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1069
1070 next = info.fw_version + 1;
1071 cp = strsep(&next, ".");
1072 sscanf(cp, "%i", &fw_maj);
1073 cp = strsep(&next, ".");
1074 sscanf(cp, "%i", &fw_min);
1075 cp = strsep(&next, ".");
1076 sscanf(cp, "%i", &fw_mic);
1077
1078 return (((u64)fw_maj & 0xffff) << 32) | ((fw_min & 0xffff) << 16) |
1079 (fw_mic & 0xffff);
1080 }
1081
iwch_query_device(struct ib_device * ibdev,struct ib_device_attr * props,struct ib_udata * uhw)1082 static int iwch_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
1083 struct ib_udata *uhw)
1084 {
1085
1086 struct iwch_dev *dev;
1087
1088 pr_debug("%s ibdev %p\n", __func__, ibdev);
1089
1090 if (uhw->inlen || uhw->outlen)
1091 return -EINVAL;
1092
1093 dev = to_iwch_dev(ibdev);
1094 memset(props, 0, sizeof *props);
1095 memcpy(&props->sys_image_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1096 props->hw_ver = dev->rdev.t3cdev_p->type;
1097 props->fw_ver = fw_vers_string_to_u64(dev);
1098 props->device_cap_flags = dev->device_cap_flags;
1099 props->page_size_cap = dev->attr.mem_pgsizes_bitmask;
1100 props->vendor_id = (u32)dev->rdev.rnic_info.pdev->vendor;
1101 props->vendor_part_id = (u32)dev->rdev.rnic_info.pdev->device;
1102 props->max_mr_size = dev->attr.max_mr_size;
1103 props->max_qp = dev->attr.max_qps;
1104 props->max_qp_wr = dev->attr.max_wrs;
1105 props->max_sge = dev->attr.max_sge_per_wr;
1106 props->max_sge_rd = 1;
1107 props->max_qp_rd_atom = dev->attr.max_rdma_reads_per_qp;
1108 props->max_qp_init_rd_atom = dev->attr.max_rdma_reads_per_qp;
1109 props->max_cq = dev->attr.max_cqs;
1110 props->max_cqe = dev->attr.max_cqes_per_cq;
1111 props->max_mr = dev->attr.max_mem_regs;
1112 props->max_pd = dev->attr.max_pds;
1113 props->local_ca_ack_delay = 0;
1114 props->max_fast_reg_page_list_len = T3_MAX_FASTREG_DEPTH;
1115
1116 return 0;
1117 }
1118
iwch_query_port(struct ib_device * ibdev,u8 port,struct ib_port_attr * props)1119 static int iwch_query_port(struct ib_device *ibdev,
1120 u8 port, struct ib_port_attr *props)
1121 {
1122 struct iwch_dev *dev;
1123 struct net_device *netdev;
1124 struct in_device *inetdev;
1125
1126 pr_debug("%s ibdev %p\n", __func__, ibdev);
1127
1128 dev = to_iwch_dev(ibdev);
1129 netdev = dev->rdev.port_info.lldevs[port-1];
1130
1131 /* props being zeroed by the caller, avoid zeroing it here */
1132 props->max_mtu = IB_MTU_4096;
1133 props->active_mtu = ib_mtu_int_to_enum(netdev->mtu);
1134
1135 if (!netif_carrier_ok(netdev))
1136 props->state = IB_PORT_DOWN;
1137 else {
1138 inetdev = in_dev_get(netdev);
1139 if (inetdev) {
1140 if (inetdev->ifa_list)
1141 props->state = IB_PORT_ACTIVE;
1142 else
1143 props->state = IB_PORT_INIT;
1144 in_dev_put(inetdev);
1145 } else
1146 props->state = IB_PORT_INIT;
1147 }
1148
1149 props->port_cap_flags =
1150 IB_PORT_CM_SUP |
1151 IB_PORT_SNMP_TUNNEL_SUP |
1152 IB_PORT_REINIT_SUP |
1153 IB_PORT_DEVICE_MGMT_SUP |
1154 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
1155 props->gid_tbl_len = 1;
1156 props->pkey_tbl_len = 1;
1157 props->active_width = 2;
1158 props->active_speed = IB_SPEED_DDR;
1159 props->max_msg_sz = -1;
1160
1161 return 0;
1162 }
1163
show_rev(struct device * dev,struct device_attribute * attr,char * buf)1164 static ssize_t show_rev(struct device *dev, struct device_attribute *attr,
1165 char *buf)
1166 {
1167 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1168 ibdev.dev);
1169 pr_debug("%s dev 0x%p\n", __func__, dev);
1170 return sprintf(buf, "%d\n", iwch_dev->rdev.t3cdev_p->type);
1171 }
1172
show_hca(struct device * dev,struct device_attribute * attr,char * buf)1173 static ssize_t show_hca(struct device *dev, struct device_attribute *attr,
1174 char *buf)
1175 {
1176 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1177 ibdev.dev);
1178 struct ethtool_drvinfo info;
1179 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1180
1181 pr_debug("%s dev 0x%p\n", __func__, dev);
1182 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1183 return sprintf(buf, "%s\n", info.driver);
1184 }
1185
show_board(struct device * dev,struct device_attribute * attr,char * buf)1186 static ssize_t show_board(struct device *dev, struct device_attribute *attr,
1187 char *buf)
1188 {
1189 struct iwch_dev *iwch_dev = container_of(dev, struct iwch_dev,
1190 ibdev.dev);
1191 pr_debug("%s dev 0x%p\n", __func__, dev);
1192 return sprintf(buf, "%x.%x\n", iwch_dev->rdev.rnic_info.pdev->vendor,
1193 iwch_dev->rdev.rnic_info.pdev->device);
1194 }
1195
1196 enum counters {
1197 IPINRECEIVES,
1198 IPINHDRERRORS,
1199 IPINADDRERRORS,
1200 IPINUNKNOWNPROTOS,
1201 IPINDISCARDS,
1202 IPINDELIVERS,
1203 IPOUTREQUESTS,
1204 IPOUTDISCARDS,
1205 IPOUTNOROUTES,
1206 IPREASMTIMEOUT,
1207 IPREASMREQDS,
1208 IPREASMOKS,
1209 IPREASMFAILS,
1210 TCPACTIVEOPENS,
1211 TCPPASSIVEOPENS,
1212 TCPATTEMPTFAILS,
1213 TCPESTABRESETS,
1214 TCPCURRESTAB,
1215 TCPINSEGS,
1216 TCPOUTSEGS,
1217 TCPRETRANSSEGS,
1218 TCPINERRS,
1219 TCPOUTRSTS,
1220 TCPRTOMIN,
1221 TCPRTOMAX,
1222 NR_COUNTERS
1223 };
1224
1225 static const char * const names[] = {
1226 [IPINRECEIVES] = "ipInReceives",
1227 [IPINHDRERRORS] = "ipInHdrErrors",
1228 [IPINADDRERRORS] = "ipInAddrErrors",
1229 [IPINUNKNOWNPROTOS] = "ipInUnknownProtos",
1230 [IPINDISCARDS] = "ipInDiscards",
1231 [IPINDELIVERS] = "ipInDelivers",
1232 [IPOUTREQUESTS] = "ipOutRequests",
1233 [IPOUTDISCARDS] = "ipOutDiscards",
1234 [IPOUTNOROUTES] = "ipOutNoRoutes",
1235 [IPREASMTIMEOUT] = "ipReasmTimeout",
1236 [IPREASMREQDS] = "ipReasmReqds",
1237 [IPREASMOKS] = "ipReasmOKs",
1238 [IPREASMFAILS] = "ipReasmFails",
1239 [TCPACTIVEOPENS] = "tcpActiveOpens",
1240 [TCPPASSIVEOPENS] = "tcpPassiveOpens",
1241 [TCPATTEMPTFAILS] = "tcpAttemptFails",
1242 [TCPESTABRESETS] = "tcpEstabResets",
1243 [TCPCURRESTAB] = "tcpCurrEstab",
1244 [TCPINSEGS] = "tcpInSegs",
1245 [TCPOUTSEGS] = "tcpOutSegs",
1246 [TCPRETRANSSEGS] = "tcpRetransSegs",
1247 [TCPINERRS] = "tcpInErrs",
1248 [TCPOUTRSTS] = "tcpOutRsts",
1249 [TCPRTOMIN] = "tcpRtoMin",
1250 [TCPRTOMAX] = "tcpRtoMax",
1251 };
1252
iwch_alloc_stats(struct ib_device * ibdev,u8 port_num)1253 static struct rdma_hw_stats *iwch_alloc_stats(struct ib_device *ibdev,
1254 u8 port_num)
1255 {
1256 BUILD_BUG_ON(ARRAY_SIZE(names) != NR_COUNTERS);
1257
1258 /* Our driver only supports device level stats */
1259 if (port_num != 0)
1260 return NULL;
1261
1262 return rdma_alloc_hw_stats_struct(names, NR_COUNTERS,
1263 RDMA_HW_STATS_DEFAULT_LIFESPAN);
1264 }
1265
iwch_get_mib(struct ib_device * ibdev,struct rdma_hw_stats * stats,u8 port,int index)1266 static int iwch_get_mib(struct ib_device *ibdev, struct rdma_hw_stats *stats,
1267 u8 port, int index)
1268 {
1269 struct iwch_dev *dev;
1270 struct tp_mib_stats m;
1271 int ret;
1272
1273 if (port != 0 || !stats)
1274 return -ENOSYS;
1275
1276 pr_debug("%s ibdev %p\n", __func__, ibdev);
1277 dev = to_iwch_dev(ibdev);
1278 ret = dev->rdev.t3cdev_p->ctl(dev->rdev.t3cdev_p, RDMA_GET_MIB, &m);
1279 if (ret)
1280 return -ENOSYS;
1281
1282 stats->value[IPINRECEIVES] = ((u64)m.ipInReceive_hi << 32) + m.ipInReceive_lo;
1283 stats->value[IPINHDRERRORS] = ((u64)m.ipInHdrErrors_hi << 32) + m.ipInHdrErrors_lo;
1284 stats->value[IPINADDRERRORS] = ((u64)m.ipInAddrErrors_hi << 32) + m.ipInAddrErrors_lo;
1285 stats->value[IPINUNKNOWNPROTOS] = ((u64)m.ipInUnknownProtos_hi << 32) + m.ipInUnknownProtos_lo;
1286 stats->value[IPINDISCARDS] = ((u64)m.ipInDiscards_hi << 32) + m.ipInDiscards_lo;
1287 stats->value[IPINDELIVERS] = ((u64)m.ipInDelivers_hi << 32) + m.ipInDelivers_lo;
1288 stats->value[IPOUTREQUESTS] = ((u64)m.ipOutRequests_hi << 32) + m.ipOutRequests_lo;
1289 stats->value[IPOUTDISCARDS] = ((u64)m.ipOutDiscards_hi << 32) + m.ipOutDiscards_lo;
1290 stats->value[IPOUTNOROUTES] = ((u64)m.ipOutNoRoutes_hi << 32) + m.ipOutNoRoutes_lo;
1291 stats->value[IPREASMTIMEOUT] = m.ipReasmTimeout;
1292 stats->value[IPREASMREQDS] = m.ipReasmReqds;
1293 stats->value[IPREASMOKS] = m.ipReasmOKs;
1294 stats->value[IPREASMFAILS] = m.ipReasmFails;
1295 stats->value[TCPACTIVEOPENS] = m.tcpActiveOpens;
1296 stats->value[TCPPASSIVEOPENS] = m.tcpPassiveOpens;
1297 stats->value[TCPATTEMPTFAILS] = m.tcpAttemptFails;
1298 stats->value[TCPESTABRESETS] = m.tcpEstabResets;
1299 stats->value[TCPCURRESTAB] = m.tcpOutRsts;
1300 stats->value[TCPINSEGS] = m.tcpCurrEstab;
1301 stats->value[TCPOUTSEGS] = ((u64)m.tcpInSegs_hi << 32) + m.tcpInSegs_lo;
1302 stats->value[TCPRETRANSSEGS] = ((u64)m.tcpOutSegs_hi << 32) + m.tcpOutSegs_lo;
1303 stats->value[TCPINERRS] = ((u64)m.tcpRetransSeg_hi << 32) + m.tcpRetransSeg_lo,
1304 stats->value[TCPOUTRSTS] = ((u64)m.tcpInErrs_hi << 32) + m.tcpInErrs_lo;
1305 stats->value[TCPRTOMIN] = m.tcpRtoMin;
1306 stats->value[TCPRTOMAX] = m.tcpRtoMax;
1307
1308 return stats->num_counters;
1309 }
1310
1311 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
1312 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
1313 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
1314
1315 static struct device_attribute *iwch_class_attributes[] = {
1316 &dev_attr_hw_rev,
1317 &dev_attr_hca_type,
1318 &dev_attr_board_id,
1319 };
1320
iwch_port_immutable(struct ib_device * ibdev,u8 port_num,struct ib_port_immutable * immutable)1321 static int iwch_port_immutable(struct ib_device *ibdev, u8 port_num,
1322 struct ib_port_immutable *immutable)
1323 {
1324 struct ib_port_attr attr;
1325 int err;
1326
1327 immutable->core_cap_flags = RDMA_CORE_PORT_IWARP;
1328
1329 err = ib_query_port(ibdev, port_num, &attr);
1330 if (err)
1331 return err;
1332
1333 immutable->pkey_tbl_len = attr.pkey_tbl_len;
1334 immutable->gid_tbl_len = attr.gid_tbl_len;
1335
1336 return 0;
1337 }
1338
get_dev_fw_ver_str(struct ib_device * ibdev,char * str)1339 static void get_dev_fw_ver_str(struct ib_device *ibdev, char *str)
1340 {
1341 struct iwch_dev *iwch_dev = to_iwch_dev(ibdev);
1342 struct ethtool_drvinfo info;
1343 struct net_device *lldev = iwch_dev->rdev.t3cdev_p->lldev;
1344
1345 pr_debug("%s dev 0x%p\n", __func__, iwch_dev);
1346 lldev->ethtool_ops->get_drvinfo(lldev, &info);
1347 snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", info.fw_version);
1348 }
1349
iwch_register_device(struct iwch_dev * dev)1350 int iwch_register_device(struct iwch_dev *dev)
1351 {
1352 int ret;
1353 int i;
1354
1355 pr_debug("%s iwch_dev %p\n", __func__, dev);
1356 strlcpy(dev->ibdev.name, "cxgb3_%d", IB_DEVICE_NAME_MAX);
1357 memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid));
1358 memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6);
1359 dev->ibdev.owner = THIS_MODULE;
1360 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
1361 IB_DEVICE_MEM_WINDOW |
1362 IB_DEVICE_MEM_MGT_EXTENSIONS;
1363
1364 /* cxgb3 supports STag 0. */
1365 dev->ibdev.local_dma_lkey = 0;
1366
1367 dev->ibdev.uverbs_cmd_mask =
1368 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
1369 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
1370 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
1371 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
1372 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
1373 (1ull << IB_USER_VERBS_CMD_REG_MR) |
1374 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
1375 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
1376 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
1377 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1378 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
1379 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1380 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1381 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
1382 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1383 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
1384 (1ull << IB_USER_VERBS_CMD_POST_RECV);
1385 dev->ibdev.node_type = RDMA_NODE_RNIC;
1386 BUILD_BUG_ON(sizeof(IWCH_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
1387 memcpy(dev->ibdev.node_desc, IWCH_NODE_DESC, sizeof(IWCH_NODE_DESC));
1388 dev->ibdev.phys_port_cnt = dev->rdev.port_info.nports;
1389 dev->ibdev.num_comp_vectors = 1;
1390 dev->ibdev.dev.parent = &dev->rdev.rnic_info.pdev->dev;
1391 dev->ibdev.query_device = iwch_query_device;
1392 dev->ibdev.query_port = iwch_query_port;
1393 dev->ibdev.query_pkey = iwch_query_pkey;
1394 dev->ibdev.query_gid = iwch_query_gid;
1395 dev->ibdev.alloc_ucontext = iwch_alloc_ucontext;
1396 dev->ibdev.dealloc_ucontext = iwch_dealloc_ucontext;
1397 dev->ibdev.mmap = iwch_mmap;
1398 dev->ibdev.alloc_pd = iwch_allocate_pd;
1399 dev->ibdev.dealloc_pd = iwch_deallocate_pd;
1400 dev->ibdev.create_ah = iwch_ah_create;
1401 dev->ibdev.destroy_ah = iwch_ah_destroy;
1402 dev->ibdev.create_qp = iwch_create_qp;
1403 dev->ibdev.modify_qp = iwch_ib_modify_qp;
1404 dev->ibdev.destroy_qp = iwch_destroy_qp;
1405 dev->ibdev.create_cq = iwch_create_cq;
1406 dev->ibdev.destroy_cq = iwch_destroy_cq;
1407 dev->ibdev.resize_cq = iwch_resize_cq;
1408 dev->ibdev.poll_cq = iwch_poll_cq;
1409 dev->ibdev.get_dma_mr = iwch_get_dma_mr;
1410 dev->ibdev.reg_user_mr = iwch_reg_user_mr;
1411 dev->ibdev.dereg_mr = iwch_dereg_mr;
1412 dev->ibdev.alloc_mw = iwch_alloc_mw;
1413 dev->ibdev.dealloc_mw = iwch_dealloc_mw;
1414 dev->ibdev.alloc_mr = iwch_alloc_mr;
1415 dev->ibdev.map_mr_sg = iwch_map_mr_sg;
1416 dev->ibdev.attach_mcast = iwch_multicast_attach;
1417 dev->ibdev.detach_mcast = iwch_multicast_detach;
1418 dev->ibdev.process_mad = iwch_process_mad;
1419 dev->ibdev.req_notify_cq = iwch_arm_cq;
1420 dev->ibdev.post_send = iwch_post_send;
1421 dev->ibdev.post_recv = iwch_post_receive;
1422 dev->ibdev.alloc_hw_stats = iwch_alloc_stats;
1423 dev->ibdev.get_hw_stats = iwch_get_mib;
1424 dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
1425 dev->ibdev.get_port_immutable = iwch_port_immutable;
1426 dev->ibdev.get_dev_fw_str = get_dev_fw_ver_str;
1427
1428 dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
1429 if (!dev->ibdev.iwcm)
1430 return -ENOMEM;
1431
1432 dev->ibdev.iwcm->connect = iwch_connect;
1433 dev->ibdev.iwcm->accept = iwch_accept_cr;
1434 dev->ibdev.iwcm->reject = iwch_reject_cr;
1435 dev->ibdev.iwcm->create_listen = iwch_create_listen;
1436 dev->ibdev.iwcm->destroy_listen = iwch_destroy_listen;
1437 dev->ibdev.iwcm->add_ref = iwch_qp_add_ref;
1438 dev->ibdev.iwcm->rem_ref = iwch_qp_rem_ref;
1439 dev->ibdev.iwcm->get_qp = iwch_get_qp;
1440 memcpy(dev->ibdev.iwcm->ifname, dev->rdev.t3cdev_p->lldev->name,
1441 sizeof(dev->ibdev.iwcm->ifname));
1442
1443 ret = ib_register_device(&dev->ibdev, NULL);
1444 if (ret)
1445 goto bail1;
1446
1447 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i) {
1448 ret = device_create_file(&dev->ibdev.dev,
1449 iwch_class_attributes[i]);
1450 if (ret) {
1451 goto bail2;
1452 }
1453 }
1454 return 0;
1455 bail2:
1456 ib_unregister_device(&dev->ibdev);
1457 bail1:
1458 kfree(dev->ibdev.iwcm);
1459 return ret;
1460 }
1461
iwch_unregister_device(struct iwch_dev * dev)1462 void iwch_unregister_device(struct iwch_dev *dev)
1463 {
1464 int i;
1465
1466 pr_debug("%s iwch_dev %p\n", __func__, dev);
1467 for (i = 0; i < ARRAY_SIZE(iwch_class_attributes); ++i)
1468 device_remove_file(&dev->ibdev.dev,
1469 iwch_class_attributes[i]);
1470 ib_unregister_device(&dev->ibdev);
1471 kfree(dev->ibdev.iwcm);
1472 return;
1473 }
1474