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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / infiniband / hw / mlx5 / main.c
blobaa03e732b6a88d7cfa81a3d9ba4dee61d8f6c70d
1 /*
2 * Copyright (c) 2013, Mellanox Technologies 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
33 #include <asm-generic/kmap_types.h>
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/errno.h>
37 #include <linux/pci.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/slab.h>
40 #include <linux/io-mapping.h>
41 #include <linux/sched.h>
42 #include <rdma/ib_user_verbs.h>
43 #include <rdma/ib_smi.h>
44 #include <rdma/ib_umem.h>
45 #include "user.h"
46 #include "mlx5_ib.h"
47
48 #define DRIVER_NAME "mlx5_ib"
49 #define DRIVER_VERSION "1.0"
50 #define DRIVER_RELDATE "June 2013"
51
52 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
53 MODULE_DESCRIPTION("Mellanox Connect-IB HCA IB driver");
54 MODULE_LICENSE("Dual BSD/GPL");
55 MODULE_VERSION(DRIVER_VERSION);
56
57 static int prof_sel = 2;
58 module_param_named(prof_sel, prof_sel, int, 0444);
59 MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2");
60
61 static char mlx5_version[] =
62 DRIVER_NAME ": Mellanox Connect-IB Infiniband driver v"
63 DRIVER_VERSION " (" DRIVER_RELDATE ")\n";
64
65 static struct mlx5_profile profile[] = {
66 [0] = {
67 .mask = 0,
68 },
69 [1] = {
70 .mask = MLX5_PROF_MASK_QP_SIZE,
71 .log_max_qp = 12,
72 },
73 [2] = {
74 .mask = MLX5_PROF_MASK_QP_SIZE |
75 MLX5_PROF_MASK_MR_CACHE,
76 .log_max_qp = 17,
77 .mr_cache[0] = {
78 .size = 500,
79 .limit = 250
80 },
81 .mr_cache[1] = {
82 .size = 500,
83 .limit = 250
84 },
85 .mr_cache[2] = {
86 .size = 500,
87 .limit = 250
88 },
89 .mr_cache[3] = {
90 .size = 500,
91 .limit = 250
92 },
93 .mr_cache[4] = {
94 .size = 500,
95 .limit = 250
96 },
97 .mr_cache[5] = {
98 .size = 500,
99 .limit = 250
100 },
101 .mr_cache[6] = {
102 .size = 500,
103 .limit = 250
104 },
105 .mr_cache[7] = {
106 .size = 500,
107 .limit = 250
108 },
109 .mr_cache[8] = {
110 .size = 500,
111 .limit = 250
112 },
113 .mr_cache[9] = {
114 .size = 500,
115 .limit = 250
116 },
117 .mr_cache[10] = {
118 .size = 500,
119 .limit = 250
120 },
121 .mr_cache[11] = {
122 .size = 500,
123 .limit = 250
124 },
125 .mr_cache[12] = {
126 .size = 64,
127 .limit = 32
128 },
129 .mr_cache[13] = {
130 .size = 32,
131 .limit = 16
132 },
133 .mr_cache[14] = {
134 .size = 16,
135 .limit = 8
136 },
137 .mr_cache[15] = {
138 .size = 8,
139 .limit = 4
140 },
141 },
142 };
143
144 int mlx5_vector2eqn(struct mlx5_ib_dev *dev, int vector, int *eqn, int *irqn)
145 {
146 struct mlx5_eq_table *table = &dev->mdev.priv.eq_table;
147 struct mlx5_eq *eq, *n;
148 int err = -ENOENT;
149
150 spin_lock(&table->lock);
151 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
152 if (eq->index == vector) {
153 *eqn = eq->eqn;
154 *irqn = eq->irqn;
155 err = 0;
156 break;
157 }
158 }
159 spin_unlock(&table->lock);
160
161 return err;
162 }
163
164 static int alloc_comp_eqs(struct mlx5_ib_dev *dev)
165 {
166 struct mlx5_eq_table *table = &dev->mdev.priv.eq_table;
167 char name[MLX5_MAX_EQ_NAME];
168 struct mlx5_eq *eq, *n;
169 int ncomp_vec;
170 int nent;
171 int err;
172 int i;
173
174 INIT_LIST_HEAD(&dev->eqs_list);
175 ncomp_vec = table->num_comp_vectors;
176 nent = MLX5_COMP_EQ_SIZE;
177 for (i = 0; i < ncomp_vec; i++) {
178 eq = kzalloc(sizeof(*eq), GFP_KERNEL);
179 if (!eq) {
180 err = -ENOMEM;
181 goto clean;
182 }
183
184 snprintf(name, MLX5_MAX_EQ_NAME, "mlx5_comp%d", i);
185 err = mlx5_create_map_eq(&dev->mdev, eq,
186 i + MLX5_EQ_VEC_COMP_BASE, nent, 0,
187 name, &dev->mdev.priv.uuari.uars[0]);
188 if (err) {
189 kfree(eq);
190 goto clean;
191 }
192 mlx5_ib_dbg(dev, "allocated completion EQN %d\n", eq->eqn);
193 eq->index = i;
194 spin_lock(&table->lock);
195 list_add_tail(&eq->list, &dev->eqs_list);
196 spin_unlock(&table->lock);
197 }
198
199 dev->num_comp_vectors = ncomp_vec;
200 return 0;
201
202 clean:
203 spin_lock(&table->lock);
204 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
205 list_del(&eq->list);
206 spin_unlock(&table->lock);
207 if (mlx5_destroy_unmap_eq(&dev->mdev, eq))
208 mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn);
209 kfree(eq);
210 spin_lock(&table->lock);
211 }
212 spin_unlock(&table->lock);
213 return err;
214 }
215
216 static void free_comp_eqs(struct mlx5_ib_dev *dev)
217 {
218 struct mlx5_eq_table *table = &dev->mdev.priv.eq_table;
219 struct mlx5_eq *eq, *n;
220
221 spin_lock(&table->lock);
222 list_for_each_entry_safe(eq, n, &dev->eqs_list, list) {
223 list_del(&eq->list);
224 spin_unlock(&table->lock);
225 if (mlx5_destroy_unmap_eq(&dev->mdev, eq))
226 mlx5_ib_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn);
227 kfree(eq);
228 spin_lock(&table->lock);
229 }
230 spin_unlock(&table->lock);
231 }
232
233 static int mlx5_ib_query_device(struct ib_device *ibdev,
234 struct ib_device_attr *props)
235 {
236 struct mlx5_ib_dev *dev = to_mdev(ibdev);
237 struct ib_smp *in_mad = NULL;
238 struct ib_smp *out_mad = NULL;
239 int err = -ENOMEM;
240 int max_rq_sg;
241 int max_sq_sg;
242 u64 flags;
243
244 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
245 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
246 if (!in_mad || !out_mad)
247 goto out;
248
249 init_query_mad(in_mad);
250 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
251
252 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
253 if (err)
254 goto out;
255
256 memset(props, 0, sizeof(*props));
257
258 props->fw_ver = ((u64)fw_rev_maj(&dev->mdev) << 32) |
259 (fw_rev_min(&dev->mdev) << 16) |
260 fw_rev_sub(&dev->mdev);
261 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
262 IB_DEVICE_PORT_ACTIVE_EVENT |
263 IB_DEVICE_SYS_IMAGE_GUID |
264 IB_DEVICE_RC_RNR_NAK_GEN;
265 flags = dev->mdev.caps.flags;
266 if (flags & MLX5_DEV_CAP_FLAG_BAD_PKEY_CNTR)
267 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
268 if (flags & MLX5_DEV_CAP_FLAG_BAD_QKEY_CNTR)
269 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
270 if (flags & MLX5_DEV_CAP_FLAG_APM)
271 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
272 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY;
273 if (flags & MLX5_DEV_CAP_FLAG_XRC)
274 props->device_cap_flags |= IB_DEVICE_XRC;
275 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
276
277 props->vendor_id = be32_to_cpup((__be32 *)(out_mad->data + 36)) &
278 0xffffff;
279 props->vendor_part_id = be16_to_cpup((__be16 *)(out_mad->data + 30));
280 props->hw_ver = be32_to_cpup((__be32 *)(out_mad->data + 32));
281 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
282
283 props->max_mr_size = ~0ull;
284 props->page_size_cap = dev->mdev.caps.min_page_sz;
285 props->max_qp = 1 << dev->mdev.caps.log_max_qp;
286 props->max_qp_wr = dev->mdev.caps.max_wqes;
287 max_rq_sg = dev->mdev.caps.max_rq_desc_sz / sizeof(struct mlx5_wqe_data_seg);
288 max_sq_sg = (dev->mdev.caps.max_sq_desc_sz - sizeof(struct mlx5_wqe_ctrl_seg)) /
289 sizeof(struct mlx5_wqe_data_seg);
290 props->max_sge = min(max_rq_sg, max_sq_sg);
291 props->max_cq = 1 << dev->mdev.caps.log_max_cq;
292 props->max_cqe = dev->mdev.caps.max_cqes - 1;
293 props->max_mr = 1 << dev->mdev.caps.log_max_mkey;
294 props->max_pd = 1 << dev->mdev.caps.log_max_pd;
295 props->max_qp_rd_atom = dev->mdev.caps.max_ra_req_qp;
296 props->max_qp_init_rd_atom = dev->mdev.caps.max_ra_res_qp;
297 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
298 props->max_srq = 1 << dev->mdev.caps.log_max_srq;
299 props->max_srq_wr = dev->mdev.caps.max_srq_wqes - 1;
300 props->max_srq_sge = max_rq_sg - 1;
301 props->max_fast_reg_page_list_len = (unsigned int)-1;
302 props->local_ca_ack_delay = dev->mdev.caps.local_ca_ack_delay;
303 props->atomic_cap = IB_ATOMIC_NONE;
304 props->masked_atomic_cap = IB_ATOMIC_NONE;
305 props->max_pkeys = be16_to_cpup((__be16 *)(out_mad->data + 28));
306 props->max_mcast_grp = 1 << dev->mdev.caps.log_max_mcg;
307 props->max_mcast_qp_attach = dev->mdev.caps.max_qp_mcg;
308 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
309 props->max_mcast_grp;
310 props->max_map_per_fmr = INT_MAX; /* no limit in ConnectIB */
311
312 out:
313 kfree(in_mad);
314 kfree(out_mad);
315
316 return err;
317 }
318
319 int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
320 struct ib_port_attr *props)
321 {
322 struct mlx5_ib_dev *dev = to_mdev(ibdev);
323 struct ib_smp *in_mad = NULL;
324 struct ib_smp *out_mad = NULL;
325 int ext_active_speed;
326 int err = -ENOMEM;
327
328 if (port < 1 || port > dev->mdev.caps.num_ports) {
329 mlx5_ib_warn(dev, "invalid port number %d\n", port);
330 return -EINVAL;
331 }
332
333 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
334 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
335 if (!in_mad || !out_mad)
336 goto out;
337
338 memset(props, 0, sizeof(*props));
339
340 init_query_mad(in_mad);
341 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
342 in_mad->attr_mod = cpu_to_be32(port);
343
344 err = mlx5_MAD_IFC(dev, 1, 1, port, NULL, NULL, in_mad, out_mad);
345 if (err) {
346 mlx5_ib_warn(dev, "err %d\n", err);
347 goto out;
348 }
349
350
351 props->lid = be16_to_cpup((__be16 *)(out_mad->data + 16));
352 props->lmc = out_mad->data[34] & 0x7;
353 props->sm_lid = be16_to_cpup((__be16 *)(out_mad->data + 18));
354 props->sm_sl = out_mad->data[36] & 0xf;
355 props->state = out_mad->data[32] & 0xf;
356 props->phys_state = out_mad->data[33] >> 4;
357 props->port_cap_flags = be32_to_cpup((__be32 *)(out_mad->data + 20));
358 props->gid_tbl_len = out_mad->data[50];
359 props->max_msg_sz = 1 << to_mdev(ibdev)->mdev.caps.log_max_msg;
360 props->pkey_tbl_len = to_mdev(ibdev)->mdev.caps.port[port - 1].pkey_table_len;
361 props->bad_pkey_cntr = be16_to_cpup((__be16 *)(out_mad->data + 46));
362 props->qkey_viol_cntr = be16_to_cpup((__be16 *)(out_mad->data + 48));
363 props->active_width = out_mad->data[31] & 0xf;
364 props->active_speed = out_mad->data[35] >> 4;
365 props->max_mtu = out_mad->data[41] & 0xf;
366 props->active_mtu = out_mad->data[36] >> 4;
367 props->subnet_timeout = out_mad->data[51] & 0x1f;
368 props->max_vl_num = out_mad->data[37] >> 4;
369 props->init_type_reply = out_mad->data[41] >> 4;
370
371 /* Check if extended speeds (EDR/FDR/...) are supported */
372 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) {
373 ext_active_speed = out_mad->data[62] >> 4;
374
375 switch (ext_active_speed) {
376 case 1:
377 props->active_speed = 16; /* FDR */
378 break;
379 case 2:
380 props->active_speed = 32; /* EDR */
381 break;
382 }
383 }
384
385 /* If reported active speed is QDR, check if is FDR-10 */
386 if (props->active_speed == 4) {
387 if (dev->mdev.caps.ext_port_cap[port - 1] &
388 MLX_EXT_PORT_CAP_FLAG_EXTENDED_PORT_INFO) {
389 init_query_mad(in_mad);
390 in_mad->attr_id = MLX5_ATTR_EXTENDED_PORT_INFO;
391 in_mad->attr_mod = cpu_to_be32(port);
392
393 err = mlx5_MAD_IFC(dev, 1, 1, port,
394 NULL, NULL, in_mad, out_mad);
395 if (err)
396 goto out;
397
398 /* Checking LinkSpeedActive for FDR-10 */
399 if (out_mad->data[15] & 0x1)
400 props->active_speed = 8;
401 }
402 }
403
404 out:
405 kfree(in_mad);
406 kfree(out_mad);
407
408 return err;
409 }
410
411 static int mlx5_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
412 union ib_gid *gid)
413 {
414 struct ib_smp *in_mad = NULL;
415 struct ib_smp *out_mad = NULL;
416 int err = -ENOMEM;
417
418 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
419 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
420 if (!in_mad || !out_mad)
421 goto out;
422
423 init_query_mad(in_mad);
424 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
425 in_mad->attr_mod = cpu_to_be32(port);
426
427 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
428 if (err)
429 goto out;
430
431 memcpy(gid->raw, out_mad->data + 8, 8);
432
433 init_query_mad(in_mad);
434 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
435 in_mad->attr_mod = cpu_to_be32(index / 8);
436
437 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
438 if (err)
439 goto out;
440
441 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
442
443 out:
444 kfree(in_mad);
445 kfree(out_mad);
446 return err;
447 }
448
449 static int mlx5_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
450 u16 *pkey)
451 {
452 struct ib_smp *in_mad = NULL;
453 struct ib_smp *out_mad = NULL;
454 int err = -ENOMEM;
455
456 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
457 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
458 if (!in_mad || !out_mad)
459 goto out;
460
461 init_query_mad(in_mad);
462 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
463 in_mad->attr_mod = cpu_to_be32(index / 32);
464
465 err = mlx5_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
466 if (err)
467 goto out;
468
469 *pkey = be16_to_cpu(((__be16 *)out_mad->data)[index % 32]);
470
471 out:
472 kfree(in_mad);
473 kfree(out_mad);
474 return err;
475 }
476
477 struct mlx5_reg_node_desc {
478 u8 desc[64];
479 };
480
481 static int mlx5_ib_modify_device(struct ib_device *ibdev, int mask,
482 struct ib_device_modify *props)
483 {
484 struct mlx5_ib_dev *dev = to_mdev(ibdev);
485 struct mlx5_reg_node_desc in;
486 struct mlx5_reg_node_desc out;
487 int err;
488
489 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
490 return -EOPNOTSUPP;
491
492 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC))
493 return 0;
494
495 /*
496 * If possible, pass node desc to FW, so it can generate
497 * a 144 trap. If cmd fails, just ignore.
498 */
499 memcpy(&in, props->node_desc, 64);
500 err = mlx5_core_access_reg(&dev->mdev, &in, sizeof(in), &out,
501 sizeof(out), MLX5_REG_NODE_DESC, 0, 1);
502 if (err)
503 return err;
504
505 memcpy(ibdev->node_desc, props->node_desc, 64);
506
507 return err;
508 }
509
510 static int mlx5_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
511 struct ib_port_modify *props)
512 {
513 struct mlx5_ib_dev *dev = to_mdev(ibdev);
514 struct ib_port_attr attr;
515 u32 tmp;
516 int err;
517
518 mutex_lock(&dev->cap_mask_mutex);
519
520 err = mlx5_ib_query_port(ibdev, port, &attr);
521 if (err)
522 goto out;
523
524 tmp = (attr.port_cap_flags | props->set_port_cap_mask) &
525 ~props->clr_port_cap_mask;
526
527 err = mlx5_set_port_caps(&dev->mdev, port, tmp);
528
529 out:
530 mutex_unlock(&dev->cap_mask_mutex);
531 return err;
532 }
533
534 static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
535 struct ib_udata *udata)
536 {
537 struct mlx5_ib_dev *dev = to_mdev(ibdev);
538 struct mlx5_ib_alloc_ucontext_req_v2 req;
539 struct mlx5_ib_alloc_ucontext_resp resp;
540 struct mlx5_ib_ucontext *context;
541 struct mlx5_uuar_info *uuari;
542 struct mlx5_uar *uars;
543 int gross_uuars;
544 int num_uars;
545 int ver;
546 int uuarn;
547 int err;
548 int i;
549 int reqlen;
550
551 if (!dev->ib_active)
552 return ERR_PTR(-EAGAIN);
553
554 memset(&req, 0, sizeof(req));
555 reqlen = udata->inlen - sizeof(struct ib_uverbs_cmd_hdr);
556 if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req))
557 ver = 0;
558 else if (reqlen == sizeof(struct mlx5_ib_alloc_ucontext_req_v2))
559 ver = 2;
560 else
561 return ERR_PTR(-EINVAL);
562
563 err = ib_copy_from_udata(&req, udata, reqlen);
564 if (err)
565 return ERR_PTR(err);
566
567 if (req.flags || req.reserved)
568 return ERR_PTR(-EINVAL);
569
570 if (req.total_num_uuars > MLX5_MAX_UUARS)
571 return ERR_PTR(-ENOMEM);
572
573 if (req.total_num_uuars == 0)
574 return ERR_PTR(-EINVAL);
575
576 req.total_num_uuars = ALIGN(req.total_num_uuars,
577 MLX5_NON_FP_BF_REGS_PER_PAGE);
578 if (req.num_low_latency_uuars > req.total_num_uuars - 1)
579 return ERR_PTR(-EINVAL);
580
581 num_uars = req.total_num_uuars / MLX5_NON_FP_BF_REGS_PER_PAGE;
582 gross_uuars = num_uars * MLX5_BF_REGS_PER_PAGE;
583 resp.qp_tab_size = 1 << dev->mdev.caps.log_max_qp;
584 resp.bf_reg_size = dev->mdev.caps.bf_reg_size;
585 resp.cache_line_size = L1_CACHE_BYTES;
586 resp.max_sq_desc_sz = dev->mdev.caps.max_sq_desc_sz;
587 resp.max_rq_desc_sz = dev->mdev.caps.max_rq_desc_sz;
588 resp.max_send_wqebb = dev->mdev.caps.max_wqes;
589 resp.max_recv_wr = dev->mdev.caps.max_wqes;
590 resp.max_srq_recv_wr = dev->mdev.caps.max_srq_wqes;
591
592 context = kzalloc(sizeof(*context), GFP_KERNEL);
593 if (!context)
594 return ERR_PTR(-ENOMEM);
595
596 uuari = &context->uuari;
597 mutex_init(&uuari->lock);
598 uars = kcalloc(num_uars, sizeof(*uars), GFP_KERNEL);
599 if (!uars) {
600 err = -ENOMEM;
601 goto out_ctx;
602 }
603
604 uuari->bitmap = kcalloc(BITS_TO_LONGS(gross_uuars),
605 sizeof(*uuari->bitmap),
606 GFP_KERNEL);
607 if (!uuari->bitmap) {
608 err = -ENOMEM;
609 goto out_uar_ctx;
610 }
611 /*
612 * clear all fast path uuars
613 */
614 for (i = 0; i < gross_uuars; i++) {
615 uuarn = i & 3;
616 if (uuarn == 2 || uuarn == 3)
617 set_bit(i, uuari->bitmap);
618 }
619
620 uuari->count = kcalloc(gross_uuars, sizeof(*uuari->count), GFP_KERNEL);
621 if (!uuari->count) {
622 err = -ENOMEM;
623 goto out_bitmap;
624 }
625
626 for (i = 0; i < num_uars; i++) {
627 err = mlx5_cmd_alloc_uar(&dev->mdev, &uars[i].index);
628 if (err)
629 goto out_count;
630 }
631
632 INIT_LIST_HEAD(&context->db_page_list);
633 mutex_init(&context->db_page_mutex);
634
635 resp.tot_uuars = req.total_num_uuars;
636 resp.num_ports = dev->mdev.caps.num_ports;
637 err = ib_copy_to_udata(udata, &resp,
638 sizeof(resp) - sizeof(resp.reserved));
639 if (err)
640 goto out_uars;
641
642 uuari->ver = ver;
643 uuari->num_low_latency_uuars = req.num_low_latency_uuars;
644 uuari->uars = uars;
645 uuari->num_uars = num_uars;
646 return &context->ibucontext;
647
648 out_uars:
649 for (i--; i >= 0; i--)
650 mlx5_cmd_free_uar(&dev->mdev, uars[i].index);
651 out_count:
652 kfree(uuari->count);
653
654 out_bitmap:
655 kfree(uuari->bitmap);
656
657 out_uar_ctx:
658 kfree(uars);
659
660 out_ctx:
661 kfree(context);
662 return ERR_PTR(err);
663 }
664
665 static int mlx5_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
666 {
667 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
668 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
669 struct mlx5_uuar_info *uuari = &context->uuari;
670 int i;
671
672 for (i = 0; i < uuari->num_uars; i++) {
673 if (mlx5_cmd_free_uar(&dev->mdev, uuari->uars[i].index))
674 mlx5_ib_warn(dev, "failed to free UAR 0x%x\n", uuari->uars[i].index);
675 }
676
677 kfree(uuari->count);
678 kfree(uuari->bitmap);
679 kfree(uuari->uars);
680 kfree(context);
681
682 return 0;
683 }
684
685 static phys_addr_t uar_index2pfn(struct mlx5_ib_dev *dev, int index)
686 {
687 return (pci_resource_start(dev->mdev.pdev, 0) >> PAGE_SHIFT) + index;
688 }
689
690 static int get_command(unsigned long offset)
691 {
692 return (offset >> MLX5_IB_MMAP_CMD_SHIFT) & MLX5_IB_MMAP_CMD_MASK;
693 }
694
695 static int get_arg(unsigned long offset)
696 {
697 return offset & ((1 << MLX5_IB_MMAP_CMD_SHIFT) - 1);
698 }
699
700 static int get_index(unsigned long offset)
701 {
702 return get_arg(offset);
703 }
704
705 static int mlx5_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
706 {
707 struct mlx5_ib_ucontext *context = to_mucontext(ibcontext);
708 struct mlx5_ib_dev *dev = to_mdev(ibcontext->device);
709 struct mlx5_uuar_info *uuari = &context->uuari;
710 unsigned long command;
711 unsigned long idx;
712 phys_addr_t pfn;
713
714 command = get_command(vma->vm_pgoff);
715 switch (command) {
716 case MLX5_IB_MMAP_REGULAR_PAGE:
717 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
718 return -EINVAL;
719
720 idx = get_index(vma->vm_pgoff);
721 pfn = uar_index2pfn(dev, uuari->uars[idx].index);
722 mlx5_ib_dbg(dev, "uar idx 0x%lx, pfn 0x%llx\n", idx,
723 (unsigned long long)pfn);
724
725 if (idx >= uuari->num_uars)
726 return -EINVAL;
727
728 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
729 if (io_remap_pfn_range(vma, vma->vm_start, pfn,
730 PAGE_SIZE, vma->vm_page_prot))
731 return -EAGAIN;
732
733 mlx5_ib_dbg(dev, "mapped WC at 0x%lx, PA 0x%llx\n",
734 vma->vm_start,
735 (unsigned long long)pfn << PAGE_SHIFT);
736 break;
737
738 case MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES:
739 return -ENOSYS;
740
741 default:
742 return -EINVAL;
743 }
744
745 return 0;
746 }
747
748 static int alloc_pa_mkey(struct mlx5_ib_dev *dev, u32 *key, u32 pdn)
749 {
750 struct mlx5_create_mkey_mbox_in *in;
751 struct mlx5_mkey_seg *seg;
752 struct mlx5_core_mr mr;
753 int err;
754
755 in = kzalloc(sizeof(*in), GFP_KERNEL);
756 if (!in)
757 return -ENOMEM;
758
759 seg = &in->seg;
760 seg->flags = MLX5_PERM_LOCAL_READ | MLX5_ACCESS_MODE_PA;
761 seg->flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64);
762 seg->qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
763 seg->start_addr = 0;
764
765 err = mlx5_core_create_mkey(&dev->mdev, &mr, in, sizeof(*in),
766 NULL, NULL, NULL);
767 if (err) {
768 mlx5_ib_warn(dev, "failed to create mkey, %d\n", err);
769 goto err_in;
770 }
771
772 kfree(in);
773 *key = mr.key;
774
775 return 0;
776
777 err_in:
778 kfree(in);
779
780 return err;
781 }
782
783 static void free_pa_mkey(struct mlx5_ib_dev *dev, u32 key)
784 {
785 struct mlx5_core_mr mr;
786 int err;
787
788 memset(&mr, 0, sizeof(mr));
789 mr.key = key;
790 err = mlx5_core_destroy_mkey(&dev->mdev, &mr);
791 if (err)
792 mlx5_ib_warn(dev, "failed to destroy mkey 0x%x\n", key);
793 }
794
795 static struct ib_pd *mlx5_ib_alloc_pd(struct ib_device *ibdev,
796 struct ib_ucontext *context,
797 struct ib_udata *udata)
798 {
799 struct mlx5_ib_alloc_pd_resp resp;
800 struct mlx5_ib_pd *pd;
801 int err;
802
803 pd = kmalloc(sizeof(*pd), GFP_KERNEL);
804 if (!pd)
805 return ERR_PTR(-ENOMEM);
806
807 err = mlx5_core_alloc_pd(&to_mdev(ibdev)->mdev, &pd->pdn);
808 if (err) {
809 kfree(pd);
810 return ERR_PTR(err);
811 }
812
813 if (context) {
814 resp.pdn = pd->pdn;
815 if (ib_copy_to_udata(udata, &resp, sizeof(resp))) {
816 mlx5_core_dealloc_pd(&to_mdev(ibdev)->mdev, pd->pdn);
817 kfree(pd);
818 return ERR_PTR(-EFAULT);
819 }
820 } else {
821 err = alloc_pa_mkey(to_mdev(ibdev), &pd->pa_lkey, pd->pdn);
822 if (err) {
823 mlx5_core_dealloc_pd(&to_mdev(ibdev)->mdev, pd->pdn);
824 kfree(pd);
825 return ERR_PTR(err);
826 }
827 }
828
829 return &pd->ibpd;
830 }
831
832 static int mlx5_ib_dealloc_pd(struct ib_pd *pd)
833 {
834 struct mlx5_ib_dev *mdev = to_mdev(pd->device);
835 struct mlx5_ib_pd *mpd = to_mpd(pd);
836
837 if (!pd->uobject)
838 free_pa_mkey(mdev, mpd->pa_lkey);
839
840 mlx5_core_dealloc_pd(&mdev->mdev, mpd->pdn);
841 kfree(mpd);
842
843 return 0;
844 }
845
846 static int mlx5_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
847 {
848 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
849 int err;
850
851 err = mlx5_core_attach_mcg(&dev->mdev, gid, ibqp->qp_num);
852 if (err)
853 mlx5_ib_warn(dev, "failed attaching QPN 0x%x, MGID %pI6\n",
854 ibqp->qp_num, gid->raw);
855
856 return err;
857 }
858
859 static int mlx5_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
860 {
861 struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
862 int err;
863
864 err = mlx5_core_detach_mcg(&dev->mdev, gid, ibqp->qp_num);
865 if (err)
866 mlx5_ib_warn(dev, "failed detaching QPN 0x%x, MGID %pI6\n",
867 ibqp->qp_num, gid->raw);
868
869 return err;
870 }
871
872 static int init_node_data(struct mlx5_ib_dev *dev)
873 {
874 struct ib_smp *in_mad = NULL;
875 struct ib_smp *out_mad = NULL;
876 int err = -ENOMEM;
877
878 in_mad = kzalloc(sizeof(*in_mad), GFP_KERNEL);
879 out_mad = kmalloc(sizeof(*out_mad), GFP_KERNEL);
880 if (!in_mad || !out_mad)
881 goto out;
882
883 init_query_mad(in_mad);
884 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
885
886 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
887 if (err)
888 goto out;
889
890 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
891
892 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
893
894 err = mlx5_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
895 if (err)
896 goto out;
897
898 dev->mdev.rev_id = be32_to_cpup((__be32 *)(out_mad->data + 32));
899 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
900
901 out:
902 kfree(in_mad);
903 kfree(out_mad);
904 return err;
905 }
906
907 static ssize_t show_fw_pages(struct device *device, struct device_attribute *attr,
908 char *buf)
909 {
910 struct mlx5_ib_dev *dev =
911 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
912
913 return sprintf(buf, "%d\n", dev->mdev.priv.fw_pages);
914 }
915
916 static ssize_t show_reg_pages(struct device *device,
917 struct device_attribute *attr, char *buf)
918 {
919 struct mlx5_ib_dev *dev =
920 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
921
922 return sprintf(buf, "%d\n", dev->mdev.priv.reg_pages);
923 }
924
925 static ssize_t show_hca(struct device *device, struct device_attribute *attr,
926 char *buf)
927 {
928 struct mlx5_ib_dev *dev =
929 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
930 return sprintf(buf, "MT%d\n", dev->mdev.pdev->device);
931 }
932
933 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr,
934 char *buf)
935 {
936 struct mlx5_ib_dev *dev =
937 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
938 return sprintf(buf, "%d.%d.%d\n", fw_rev_maj(&dev->mdev),
939 fw_rev_min(&dev->mdev), fw_rev_sub(&dev->mdev));
940 }
941
942 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
943 char *buf)
944 {
945 struct mlx5_ib_dev *dev =
946 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
947 return sprintf(buf, "%x\n", dev->mdev.rev_id);
948 }
949
950 static ssize_t show_board(struct device *device, struct device_attribute *attr,
951 char *buf)
952 {
953 struct mlx5_ib_dev *dev =
954 container_of(device, struct mlx5_ib_dev, ib_dev.dev);
955 return sprintf(buf, "%.*s\n", MLX5_BOARD_ID_LEN,
956 dev->mdev.board_id);
957 }
958
959 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
960 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL);
961 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
962 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL);
963 static DEVICE_ATTR(fw_pages, S_IRUGO, show_fw_pages, NULL);
964 static DEVICE_ATTR(reg_pages, S_IRUGO, show_reg_pages, NULL);
965
966 static struct device_attribute *mlx5_class_attributes[] = {
967 &dev_attr_hw_rev,
968 &dev_attr_fw_ver,
969 &dev_attr_hca_type,
970 &dev_attr_board_id,
971 &dev_attr_fw_pages,
972 &dev_attr_reg_pages,
973 };
974
975 static void mlx5_ib_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event,
976 void *data)
977 {
978 struct mlx5_ib_dev *ibdev = container_of(dev, struct mlx5_ib_dev, mdev);
979 struct ib_event ibev;
980 u8 port = 0;
981
982 switch (event) {
983 case MLX5_DEV_EVENT_SYS_ERROR:
984 ibdev->ib_active = false;
985 ibev.event = IB_EVENT_DEVICE_FATAL;
986 break;
987
988 case MLX5_DEV_EVENT_PORT_UP:
989 ibev.event = IB_EVENT_PORT_ACTIVE;
990 port = *(u8 *)data;
991 break;
992
993 case MLX5_DEV_EVENT_PORT_DOWN:
994 ibev.event = IB_EVENT_PORT_ERR;
995 port = *(u8 *)data;
996 break;
997
998 case MLX5_DEV_EVENT_PORT_INITIALIZED:
999 /* not used by ULPs */
1000 return;
1001
1002 case MLX5_DEV_EVENT_LID_CHANGE:
1003 ibev.event = IB_EVENT_LID_CHANGE;
1004 port = *(u8 *)data;
1005 break;
1006
1007 case MLX5_DEV_EVENT_PKEY_CHANGE:
1008 ibev.event = IB_EVENT_PKEY_CHANGE;
1009 port = *(u8 *)data;
1010 break;
1011
1012 case MLX5_DEV_EVENT_GUID_CHANGE:
1013 ibev.event = IB_EVENT_GID_CHANGE;
1014 port = *(u8 *)data;
1015 break;
1016
1017 case MLX5_DEV_EVENT_CLIENT_REREG:
1018 ibev.event = IB_EVENT_CLIENT_REREGISTER;
1019 port = *(u8 *)data;
1020 break;
1021 }
1022
1023 ibev.device = &ibdev->ib_dev;
1024 ibev.element.port_num = port;
1025
1026 if (port < 1 || port > ibdev->num_ports) {
1027 mlx5_ib_warn(ibdev, "warning: event on port %d\n", port);
1028 return;
1029 }
1030
1031 if (ibdev->ib_active)
1032 ib_dispatch_event(&ibev);
1033 }
1034
1035 static void get_ext_port_caps(struct mlx5_ib_dev *dev)
1036 {
1037 int port;
1038
1039 for (port = 1; port <= dev->mdev.caps.num_ports; port++)
1040 mlx5_query_ext_port_caps(dev, port);
1041 }
1042
1043 static int get_port_caps(struct mlx5_ib_dev *dev)
1044 {
1045 struct ib_device_attr *dprops = NULL;
1046 struct ib_port_attr *pprops = NULL;
1047 int err = 0;
1048 int port;
1049
1050 pprops = kmalloc(sizeof(*pprops), GFP_KERNEL);
1051 if (!pprops)
1052 goto out;
1053
1054 dprops = kmalloc(sizeof(*dprops), GFP_KERNEL);
1055 if (!dprops)
1056 goto out;
1057
1058 err = mlx5_ib_query_device(&dev->ib_dev, dprops);
1059 if (err) {
1060 mlx5_ib_warn(dev, "query_device failed %d\n", err);
1061 goto out;
1062 }
1063
1064 for (port = 1; port <= dev->mdev.caps.num_ports; port++) {
1065 err = mlx5_ib_query_port(&dev->ib_dev, port, pprops);
1066 if (err) {
1067 mlx5_ib_warn(dev, "query_port %d failed %d\n", port, err);
1068 break;
1069 }
1070 dev->mdev.caps.port[port - 1].pkey_table_len = dprops->max_pkeys;
1071 dev->mdev.caps.port[port - 1].gid_table_len = pprops->gid_tbl_len;
1072 mlx5_ib_dbg(dev, "pkey_table_len %d, gid_table_len %d\n",
1073 dprops->max_pkeys, pprops->gid_tbl_len);
1074 }
1075
1076 out:
1077 kfree(pprops);
1078 kfree(dprops);
1079
1080 return err;
1081 }
1082
1083 static void destroy_umrc_res(struct mlx5_ib_dev *dev)
1084 {
1085 int err;
1086
1087 err = mlx5_mr_cache_cleanup(dev);
1088 if (err)
1089 mlx5_ib_warn(dev, "mr cache cleanup failed\n");
1090
1091 mlx5_ib_destroy_qp(dev->umrc.qp);
1092 ib_destroy_cq(dev->umrc.cq);
1093 ib_dereg_mr(dev->umrc.mr);
1094 ib_dealloc_pd(dev->umrc.pd);
1095 }
1096
1097 enum {
1098 MAX_UMR_WR = 128,
1099 };
1100
1101 static int create_umr_res(struct mlx5_ib_dev *dev)
1102 {
1103 struct ib_qp_init_attr *init_attr = NULL;
1104 struct ib_qp_attr *attr = NULL;
1105 struct ib_pd *pd;
1106 struct ib_cq *cq;
1107 struct ib_qp *qp;
1108 struct ib_mr *mr;
1109 int ret;
1110
1111 attr = kzalloc(sizeof(*attr), GFP_KERNEL);
1112 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1113 if (!attr || !init_attr) {
1114 ret = -ENOMEM;
1115 goto error_0;
1116 }
1117
1118 pd = ib_alloc_pd(&dev->ib_dev);
1119 if (IS_ERR(pd)) {
1120 mlx5_ib_dbg(dev, "Couldn't create PD for sync UMR QP\n");
1121 ret = PTR_ERR(pd);
1122 goto error_0;
1123 }
1124
1125 mr = ib_get_dma_mr(pd, IB_ACCESS_LOCAL_WRITE);
1126 if (IS_ERR(mr)) {
1127 mlx5_ib_dbg(dev, "Couldn't create DMA MR for sync UMR QP\n");
1128 ret = PTR_ERR(mr);
1129 goto error_1;
1130 }
1131
1132 cq = ib_create_cq(&dev->ib_dev, mlx5_umr_cq_handler, NULL, NULL, 128,
1133 0);
1134 if (IS_ERR(cq)) {
1135 mlx5_ib_dbg(dev, "Couldn't create CQ for sync UMR QP\n");
1136 ret = PTR_ERR(cq);
1137 goto error_2;
1138 }
1139 ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
1140
1141 init_attr->send_cq = cq;
1142 init_attr->recv_cq = cq;
1143 init_attr->sq_sig_type = IB_SIGNAL_ALL_WR;
1144 init_attr->cap.max_send_wr = MAX_UMR_WR;
1145 init_attr->cap.max_send_sge = 1;
1146 init_attr->qp_type = MLX5_IB_QPT_REG_UMR;
1147 init_attr->port_num = 1;
1148 qp = mlx5_ib_create_qp(pd, init_attr, NULL);
1149 if (IS_ERR(qp)) {
1150 mlx5_ib_dbg(dev, "Couldn't create sync UMR QP\n");
1151 ret = PTR_ERR(qp);
1152 goto error_3;
1153 }
1154 qp->device = &dev->ib_dev;
1155 qp->real_qp = qp;
1156 qp->uobject = NULL;
1157 qp->qp_type = MLX5_IB_QPT_REG_UMR;
1158
1159 attr->qp_state = IB_QPS_INIT;
1160 attr->port_num = 1;
1161 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX |
1162 IB_QP_PORT, NULL);
1163 if (ret) {
1164 mlx5_ib_dbg(dev, "Couldn't modify UMR QP\n");
1165 goto error_4;
1166 }
1167
1168 memset(attr, 0, sizeof(*attr));
1169 attr->qp_state = IB_QPS_RTR;
1170 attr->path_mtu = IB_MTU_256;
1171
1172 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
1173 if (ret) {
1174 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rtr\n");
1175 goto error_4;
1176 }
1177
1178 memset(attr, 0, sizeof(*attr));
1179 attr->qp_state = IB_QPS_RTS;
1180 ret = mlx5_ib_modify_qp(qp, attr, IB_QP_STATE, NULL);
1181 if (ret) {
1182 mlx5_ib_dbg(dev, "Couldn't modify umr QP to rts\n");
1183 goto error_4;
1184 }
1185
1186 dev->umrc.qp = qp;
1187 dev->umrc.cq = cq;
1188 dev->umrc.mr = mr;
1189 dev->umrc.pd = pd;
1190
1191 sema_init(&dev->umrc.sem, MAX_UMR_WR);
1192 ret = mlx5_mr_cache_init(dev);
1193 if (ret) {
1194 mlx5_ib_warn(dev, "mr cache init failed %d\n", ret);
1195 goto error_4;
1196 }
1197
1198 kfree(attr);
1199 kfree(init_attr);
1200
1201 return 0;
1202
1203 error_4:
1204 mlx5_ib_destroy_qp(qp);
1205
1206 error_3:
1207 ib_destroy_cq(cq);
1208
1209 error_2:
1210 ib_dereg_mr(mr);
1211
1212 error_1:
1213 ib_dealloc_pd(pd);
1214
1215 error_0:
1216 kfree(attr);
1217 kfree(init_attr);
1218 return ret;
1219 }
1220
1221 static int create_dev_resources(struct mlx5_ib_resources *devr)
1222 {
1223 struct ib_srq_init_attr attr;
1224 struct mlx5_ib_dev *dev;
1225 int ret = 0;
1226
1227 dev = container_of(devr, struct mlx5_ib_dev, devr);
1228
1229 devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
1230 if (IS_ERR(devr->p0)) {
1231 ret = PTR_ERR(devr->p0);
1232 goto error0;
1233 }
1234 devr->p0->device = &dev->ib_dev;
1235 devr->p0->uobject = NULL;
1236 atomic_set(&devr->p0->usecnt, 0);
1237
1238 devr->c0 = mlx5_ib_create_cq(&dev->ib_dev, 1, 0, NULL, NULL);
1239 if (IS_ERR(devr->c0)) {
1240 ret = PTR_ERR(devr->c0);
1241 goto error1;
1242 }
1243 devr->c0->device = &dev->ib_dev;
1244 devr->c0->uobject = NULL;
1245 devr->c0->comp_handler = NULL;
1246 devr->c0->event_handler = NULL;
1247 devr->c0->cq_context = NULL;
1248 atomic_set(&devr->c0->usecnt, 0);
1249
1250 devr->x0 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
1251 if (IS_ERR(devr->x0)) {
1252 ret = PTR_ERR(devr->x0);
1253 goto error2;
1254 }
1255 devr->x0->device = &dev->ib_dev;
1256 devr->x0->inode = NULL;
1257 atomic_set(&devr->x0->usecnt, 0);
1258 mutex_init(&devr->x0->tgt_qp_mutex);
1259 INIT_LIST_HEAD(&devr->x0->tgt_qp_list);
1260
1261 devr->x1 = mlx5_ib_alloc_xrcd(&dev->ib_dev, NULL, NULL);
1262 if (IS_ERR(devr->x1)) {
1263 ret = PTR_ERR(devr->x1);
1264 goto error3;
1265 }
1266 devr->x1->device = &dev->ib_dev;
1267 devr->x1->inode = NULL;
1268 atomic_set(&devr->x1->usecnt, 0);
1269 mutex_init(&devr->x1->tgt_qp_mutex);
1270 INIT_LIST_HEAD(&devr->x1->tgt_qp_list);
1271
1272 memset(&attr, 0, sizeof(attr));
1273 attr.attr.max_sge = 1;
1274 attr.attr.max_wr = 1;
1275 attr.srq_type = IB_SRQT_XRC;
1276 attr.ext.xrc.cq = devr->c0;
1277 attr.ext.xrc.xrcd = devr->x0;
1278
1279 devr->s0 = mlx5_ib_create_srq(devr->p0, &attr, NULL);
1280 if (IS_ERR(devr->s0)) {
1281 ret = PTR_ERR(devr->s0);
1282 goto error4;
1283 }
1284 devr->s0->device = &dev->ib_dev;
1285 devr->s0->pd = devr->p0;
1286 devr->s0->uobject = NULL;
1287 devr->s0->event_handler = NULL;
1288 devr->s0->srq_context = NULL;
1289 devr->s0->srq_type = IB_SRQT_XRC;
1290 devr->s0->ext.xrc.xrcd = devr->x0;
1291 devr->s0->ext.xrc.cq = devr->c0;
1292 atomic_inc(&devr->s0->ext.xrc.xrcd->usecnt);
1293 atomic_inc(&devr->s0->ext.xrc.cq->usecnt);
1294 atomic_inc(&devr->p0->usecnt);
1295 atomic_set(&devr->s0->usecnt, 0);
1296
1297 return 0;
1298
1299 error4:
1300 mlx5_ib_dealloc_xrcd(devr->x1);
1301 error3:
1302 mlx5_ib_dealloc_xrcd(devr->x0);
1303 error2:
1304 mlx5_ib_destroy_cq(devr->c0);
1305 error1:
1306 mlx5_ib_dealloc_pd(devr->p0);
1307 error0:
1308 return ret;
1309 }
1310
1311 static void destroy_dev_resources(struct mlx5_ib_resources *devr)
1312 {
1313 mlx5_ib_destroy_srq(devr->s0);
1314 mlx5_ib_dealloc_xrcd(devr->x0);
1315 mlx5_ib_dealloc_xrcd(devr->x1);
1316 mlx5_ib_destroy_cq(devr->c0);
1317 mlx5_ib_dealloc_pd(devr->p0);
1318 }
1319
1320 static int init_one(struct pci_dev *pdev,
1321 const struct pci_device_id *id)
1322 {
1323 struct mlx5_core_dev *mdev;
1324 struct mlx5_ib_dev *dev;
1325 int err;
1326 int i;
1327
1328 printk_once(KERN_INFO "%s", mlx5_version);
1329
1330 dev = (struct mlx5_ib_dev *)ib_alloc_device(sizeof(*dev));
1331 if (!dev)
1332 return -ENOMEM;
1333
1334 mdev = &dev->mdev;
1335 mdev->event = mlx5_ib_event;
1336 if (prof_sel >= ARRAY_SIZE(profile)) {
1337 pr_warn("selected pofile out of range, selceting default\n");
1338 prof_sel = 0;
1339 }
1340 mdev->profile = &profile[prof_sel];
1341 err = mlx5_dev_init(mdev, pdev);
1342 if (err)
1343 goto err_free;
1344
1345 err = get_port_caps(dev);
1346 if (err)
1347 goto err_cleanup;
1348
1349 get_ext_port_caps(dev);
1350
1351 err = alloc_comp_eqs(dev);
1352 if (err)
1353 goto err_cleanup;
1354
1355 MLX5_INIT_DOORBELL_LOCK(&dev->uar_lock);
1356
1357 strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX);
1358 dev->ib_dev.owner = THIS_MODULE;
1359 dev->ib_dev.node_type = RDMA_NODE_IB_CA;
1360 dev->ib_dev.local_dma_lkey = mdev->caps.reserved_lkey;
1361 dev->num_ports = mdev->caps.num_ports;
1362 dev->ib_dev.phys_port_cnt = dev->num_ports;
1363 dev->ib_dev.num_comp_vectors = dev->num_comp_vectors;
1364 dev->ib_dev.dma_device = &mdev->pdev->dev;
1365
1366 dev->ib_dev.uverbs_abi_ver = MLX5_IB_UVERBS_ABI_VERSION;
1367 dev->ib_dev.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_RESIZE_CQ) |
1378 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
1379 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
1380 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
1381 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
1382 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
1383 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
1384 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
1385 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
1386 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
1387 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
1388 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) |
1389 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) |
1390 (1ull << IB_USER_VERBS_CMD_OPEN_QP);
1391
1392 dev->ib_dev.query_device = mlx5_ib_query_device;
1393 dev->ib_dev.query_port = mlx5_ib_query_port;
1394 dev->ib_dev.query_gid = mlx5_ib_query_gid;
1395 dev->ib_dev.query_pkey = mlx5_ib_query_pkey;
1396 dev->ib_dev.modify_device = mlx5_ib_modify_device;
1397 dev->ib_dev.modify_port = mlx5_ib_modify_port;
1398 dev->ib_dev.alloc_ucontext = mlx5_ib_alloc_ucontext;
1399 dev->ib_dev.dealloc_ucontext = mlx5_ib_dealloc_ucontext;
1400 dev->ib_dev.mmap = mlx5_ib_mmap;
1401 dev->ib_dev.alloc_pd = mlx5_ib_alloc_pd;
1402 dev->ib_dev.dealloc_pd = mlx5_ib_dealloc_pd;
1403 dev->ib_dev.create_ah = mlx5_ib_create_ah;
1404 dev->ib_dev.query_ah = mlx5_ib_query_ah;
1405 dev->ib_dev.destroy_ah = mlx5_ib_destroy_ah;
1406 dev->ib_dev.create_srq = mlx5_ib_create_srq;
1407 dev->ib_dev.modify_srq = mlx5_ib_modify_srq;
1408 dev->ib_dev.query_srq = mlx5_ib_query_srq;
1409 dev->ib_dev.destroy_srq = mlx5_ib_destroy_srq;
1410 dev->ib_dev.post_srq_recv = mlx5_ib_post_srq_recv;
1411 dev->ib_dev.create_qp = mlx5_ib_create_qp;
1412 dev->ib_dev.modify_qp = mlx5_ib_modify_qp;
1413 dev->ib_dev.query_qp = mlx5_ib_query_qp;
1414 dev->ib_dev.destroy_qp = mlx5_ib_destroy_qp;
1415 dev->ib_dev.post_send = mlx5_ib_post_send;
1416 dev->ib_dev.post_recv = mlx5_ib_post_recv;
1417 dev->ib_dev.create_cq = mlx5_ib_create_cq;
1418 dev->ib_dev.modify_cq = mlx5_ib_modify_cq;
1419 dev->ib_dev.resize_cq = mlx5_ib_resize_cq;
1420 dev->ib_dev.destroy_cq = mlx5_ib_destroy_cq;
1421 dev->ib_dev.poll_cq = mlx5_ib_poll_cq;
1422 dev->ib_dev.req_notify_cq = mlx5_ib_arm_cq;
1423 dev->ib_dev.get_dma_mr = mlx5_ib_get_dma_mr;
1424 dev->ib_dev.reg_user_mr = mlx5_ib_reg_user_mr;
1425 dev->ib_dev.dereg_mr = mlx5_ib_dereg_mr;
1426 dev->ib_dev.attach_mcast = mlx5_ib_mcg_attach;
1427 dev->ib_dev.detach_mcast = mlx5_ib_mcg_detach;
1428 dev->ib_dev.process_mad = mlx5_ib_process_mad;
1429 dev->ib_dev.alloc_fast_reg_mr = mlx5_ib_alloc_fast_reg_mr;
1430 dev->ib_dev.alloc_fast_reg_page_list = mlx5_ib_alloc_fast_reg_page_list;
1431 dev->ib_dev.free_fast_reg_page_list = mlx5_ib_free_fast_reg_page_list;
1432
1433 if (mdev->caps.flags & MLX5_DEV_CAP_FLAG_XRC) {
1434 dev->ib_dev.alloc_xrcd = mlx5_ib_alloc_xrcd;
1435 dev->ib_dev.dealloc_xrcd = mlx5_ib_dealloc_xrcd;
1436 dev->ib_dev.uverbs_cmd_mask |=
1437 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) |
1438 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD);
1439 }
1440
1441 err = init_node_data(dev);
1442 if (err)
1443 goto err_eqs;
1444
1445 mutex_init(&dev->cap_mask_mutex);
1446 spin_lock_init(&dev->mr_lock);
1447
1448 err = create_dev_resources(&dev->devr);
1449 if (err)
1450 goto err_eqs;
1451
1452 err = ib_register_device(&dev->ib_dev, NULL);
1453 if (err)
1454 goto err_rsrc;
1455
1456 err = create_umr_res(dev);
1457 if (err)
1458 goto err_dev;
1459
1460 for (i = 0; i < ARRAY_SIZE(mlx5_class_attributes); i++) {
1461 err = device_create_file(&dev->ib_dev.dev,
1462 mlx5_class_attributes[i]);
1463 if (err)
1464 goto err_umrc;
1465 }
1466
1467 dev->ib_active = true;
1468
1469 return 0;
1470
1471 err_umrc:
1472 destroy_umrc_res(dev);
1473
1474 err_dev:
1475 ib_unregister_device(&dev->ib_dev);
1476
1477 err_rsrc:
1478 destroy_dev_resources(&dev->devr);
1479
1480 err_eqs:
1481 free_comp_eqs(dev);
1482
1483 err_cleanup:
1484 mlx5_dev_cleanup(mdev);
1485
1486 err_free:
1487 ib_dealloc_device((struct ib_device *)dev);
1488
1489 return err;
1490 }
1491
1492 static void remove_one(struct pci_dev *pdev)
1493 {
1494 struct mlx5_ib_dev *dev = mlx5_pci2ibdev(pdev);
1495
1496 destroy_umrc_res(dev);
1497 ib_unregister_device(&dev->ib_dev);
1498 destroy_dev_resources(&dev->devr);
1499 free_comp_eqs(dev);
1500 mlx5_dev_cleanup(&dev->mdev);
1501 ib_dealloc_device(&dev->ib_dev);
1502 }
1503
1504 static DEFINE_PCI_DEVICE_TABLE(mlx5_ib_pci_table) = {
1505 { PCI_VDEVICE(MELLANOX, 4113) }, /* MT4113 Connect-IB */
1506 { 0, }
1507 };
1508
1509 MODULE_DEVICE_TABLE(pci, mlx5_ib_pci_table);
1510
1511 static struct pci_driver mlx5_ib_driver = {
1512 .name = DRIVER_NAME,
1513 .id_table = mlx5_ib_pci_table,
1514 .probe = init_one,
1515 .remove = remove_one
1516 };
1517
1518 static int __init mlx5_ib_init(void)
1519 {
1520 return pci_register_driver(&mlx5_ib_driver);
1521 }
1522
1523 static void __exit mlx5_ib_cleanup(void)
1524 {
1525 pci_unregister_driver(&mlx5_ib_driver);
1526 }
1527
1528 module_init(mlx5_ib_init);
1529 module_exit(mlx5_ib_cleanup);
Linux with added FPC-III support