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[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx5 / core / main.c
1 /*
2 * Copyright (c) 2013-2015, Mellanox Technologies. 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/interrupt.h>
42 #include <linux/mlx5/driver.h>
43 #include <linux/mlx5/cq.h>
44 #include <linux/mlx5/qp.h>
45 #include <linux/mlx5/srq.h>
46 #include <linux/debugfs.h>
47 #include <linux/kmod.h>
48 #include <linux/mlx5/mlx5_ifc.h>
49 #include "mlx5_core.h"
50
51 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
52 MODULE_DESCRIPTION("Mellanox Connect-IB, ConnectX-4 core driver");
53 MODULE_LICENSE("Dual BSD/GPL");
54 MODULE_VERSION(DRIVER_VERSION);
55
56 int mlx5_core_debug_mask;
57 module_param_named(debug_mask, mlx5_core_debug_mask, int, 0644);
58 MODULE_PARM_DESC(debug_mask, "debug mask: 1 = dump cmd data, 2 = dump cmd exec time, 3 = both. Default=0");
59
60 #define MLX5_DEFAULT_PROF 2
61 static int prof_sel = MLX5_DEFAULT_PROF;
62 module_param_named(prof_sel, prof_sel, int, 0444);
63 MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2");
64
65 struct workqueue_struct *mlx5_core_wq;
66 static LIST_HEAD(intf_list);
67 static LIST_HEAD(dev_list);
68 static DEFINE_MUTEX(intf_mutex);
69
70 struct mlx5_device_context {
71 struct list_head list;
72 struct mlx5_interface *intf;
73 void *context;
74 };
75
76 static struct mlx5_profile profile[] = {
77 [0] = {
78 .mask = 0,
79 },
80 [1] = {
81 .mask = MLX5_PROF_MASK_QP_SIZE,
82 .log_max_qp = 12,
83 },
84 [2] = {
85 .mask = MLX5_PROF_MASK_QP_SIZE |
86 MLX5_PROF_MASK_MR_CACHE,
87 .log_max_qp = 17,
88 .mr_cache[0] = {
89 .size = 500,
90 .limit = 250
91 },
92 .mr_cache[1] = {
93 .size = 500,
94 .limit = 250
95 },
96 .mr_cache[2] = {
97 .size = 500,
98 .limit = 250
99 },
100 .mr_cache[3] = {
101 .size = 500,
102 .limit = 250
103 },
104 .mr_cache[4] = {
105 .size = 500,
106 .limit = 250
107 },
108 .mr_cache[5] = {
109 .size = 500,
110 .limit = 250
111 },
112 .mr_cache[6] = {
113 .size = 500,
114 .limit = 250
115 },
116 .mr_cache[7] = {
117 .size = 500,
118 .limit = 250
119 },
120 .mr_cache[8] = {
121 .size = 500,
122 .limit = 250
123 },
124 .mr_cache[9] = {
125 .size = 500,
126 .limit = 250
127 },
128 .mr_cache[10] = {
129 .size = 500,
130 .limit = 250
131 },
132 .mr_cache[11] = {
133 .size = 500,
134 .limit = 250
135 },
136 .mr_cache[12] = {
137 .size = 64,
138 .limit = 32
139 },
140 .mr_cache[13] = {
141 .size = 32,
142 .limit = 16
143 },
144 .mr_cache[14] = {
145 .size = 16,
146 .limit = 8
147 },
148 .mr_cache[15] = {
149 .size = 8,
150 .limit = 4
151 },
152 },
153 };
154
155 static int set_dma_caps(struct pci_dev *pdev)
156 {
157 int err;
158
159 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
160 if (err) {
161 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
162 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
163 if (err) {
164 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
165 return err;
166 }
167 }
168
169 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
170 if (err) {
171 dev_warn(&pdev->dev,
172 "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
173 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
174 if (err) {
175 dev_err(&pdev->dev,
176 "Can't set consistent PCI DMA mask, aborting\n");
177 return err;
178 }
179 }
180
181 dma_set_max_seg_size(&pdev->dev, 2u * 1024 * 1024 * 1024);
182 return err;
183 }
184
185 static int request_bar(struct pci_dev *pdev)
186 {
187 int err = 0;
188
189 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
190 dev_err(&pdev->dev, "Missing registers BAR, aborting\n");
191 return -ENODEV;
192 }
193
194 err = pci_request_regions(pdev, DRIVER_NAME);
195 if (err)
196 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
197
198 return err;
199 }
200
201 static void release_bar(struct pci_dev *pdev)
202 {
203 pci_release_regions(pdev);
204 }
205
206 static int mlx5_enable_msix(struct mlx5_core_dev *dev)
207 {
208 struct mlx5_priv *priv = &dev->priv;
209 struct mlx5_eq_table *table = &priv->eq_table;
210 int num_eqs = 1 << MLX5_CAP_GEN(dev, log_max_eq);
211 int nvec;
212 int i;
213
214 nvec = MLX5_CAP_GEN(dev, num_ports) * num_online_cpus() +
215 MLX5_EQ_VEC_COMP_BASE;
216 nvec = min_t(int, nvec, num_eqs);
217 if (nvec <= MLX5_EQ_VEC_COMP_BASE)
218 return -ENOMEM;
219
220 priv->msix_arr = kcalloc(nvec, sizeof(*priv->msix_arr), GFP_KERNEL);
221
222 priv->irq_info = kcalloc(nvec, sizeof(*priv->irq_info), GFP_KERNEL);
223 if (!priv->msix_arr || !priv->irq_info)
224 goto err_free_msix;
225
226 for (i = 0; i < nvec; i++)
227 priv->msix_arr[i].entry = i;
228
229 nvec = pci_enable_msix_range(dev->pdev, priv->msix_arr,
230 MLX5_EQ_VEC_COMP_BASE + 1, nvec);
231 if (nvec < 0)
232 return nvec;
233
234 table->num_comp_vectors = nvec - MLX5_EQ_VEC_COMP_BASE;
235
236 return 0;
237
238 err_free_msix:
239 kfree(priv->irq_info);
240 kfree(priv->msix_arr);
241 return -ENOMEM;
242 }
243
244 static void mlx5_disable_msix(struct mlx5_core_dev *dev)
245 {
246 struct mlx5_priv *priv = &dev->priv;
247
248 pci_disable_msix(dev->pdev);
249 kfree(priv->irq_info);
250 kfree(priv->msix_arr);
251 }
252
253 struct mlx5_reg_host_endianess {
254 u8 he;
255 u8 rsvd[15];
256 };
257
258
259 #define CAP_MASK(pos, size) ((u64)((1 << (size)) - 1) << (pos))
260
261 enum {
262 MLX5_CAP_BITS_RW_MASK = CAP_MASK(MLX5_CAP_OFF_CMDIF_CSUM, 2) |
263 MLX5_DEV_CAP_FLAG_DCT,
264 };
265
266 static u16 to_fw_pkey_sz(u32 size)
267 {
268 switch (size) {
269 case 128:
270 return 0;
271 case 256:
272 return 1;
273 case 512:
274 return 2;
275 case 1024:
276 return 3;
277 case 2048:
278 return 4;
279 case 4096:
280 return 5;
281 default:
282 pr_warn("invalid pkey table size %d\n", size);
283 return 0;
284 }
285 }
286
287 int mlx5_core_get_caps(struct mlx5_core_dev *dev, enum mlx5_cap_type cap_type,
288 enum mlx5_cap_mode cap_mode)
289 {
290 u8 in[MLX5_ST_SZ_BYTES(query_hca_cap_in)];
291 int out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
292 void *out, *hca_caps;
293 u16 opmod = (cap_type << 1) | (cap_mode & 0x01);
294 int err;
295
296 memset(in, 0, sizeof(in));
297 out = kzalloc(out_sz, GFP_KERNEL);
298 if (!out)
299 return -ENOMEM;
300
301 MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP);
302 MLX5_SET(query_hca_cap_in, in, op_mod, opmod);
303 err = mlx5_cmd_exec(dev, in, sizeof(in), out, out_sz);
304 if (err)
305 goto query_ex;
306
307 err = mlx5_cmd_status_to_err_v2(out);
308 if (err) {
309 mlx5_core_warn(dev,
310 "QUERY_HCA_CAP : type(%x) opmode(%x) Failed(%d)\n",
311 cap_type, cap_mode, err);
312 goto query_ex;
313 }
314
315 hca_caps = MLX5_ADDR_OF(query_hca_cap_out, out, capability);
316
317 switch (cap_mode) {
318 case HCA_CAP_OPMOD_GET_MAX:
319 memcpy(dev->hca_caps_max[cap_type], hca_caps,
320 MLX5_UN_SZ_BYTES(hca_cap_union));
321 break;
322 case HCA_CAP_OPMOD_GET_CUR:
323 memcpy(dev->hca_caps_cur[cap_type], hca_caps,
324 MLX5_UN_SZ_BYTES(hca_cap_union));
325 break;
326 default:
327 mlx5_core_warn(dev,
328 "Tried to query dev cap type(%x) with wrong opmode(%x)\n",
329 cap_type, cap_mode);
330 err = -EINVAL;
331 break;
332 }
333 query_ex:
334 kfree(out);
335 return err;
336 }
337
338 static int set_caps(struct mlx5_core_dev *dev, void *in, int in_sz)
339 {
340 u32 out[MLX5_ST_SZ_DW(set_hca_cap_out)];
341 int err;
342
343 memset(out, 0, sizeof(out));
344
345 MLX5_SET(set_hca_cap_in, in, opcode, MLX5_CMD_OP_SET_HCA_CAP);
346 err = mlx5_cmd_exec(dev, in, in_sz, out, sizeof(out));
347 if (err)
348 return err;
349
350 err = mlx5_cmd_status_to_err_v2(out);
351
352 return err;
353 }
354
355 static int handle_hca_cap(struct mlx5_core_dev *dev)
356 {
357 void *set_ctx = NULL;
358 struct mlx5_profile *prof = dev->profile;
359 int err = -ENOMEM;
360 int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in);
361 void *set_hca_cap;
362
363 set_ctx = kzalloc(set_sz, GFP_KERNEL);
364 if (!set_ctx)
365 goto query_ex;
366
367 err = mlx5_core_get_caps(dev, MLX5_CAP_GENERAL, HCA_CAP_OPMOD_GET_MAX);
368 if (err)
369 goto query_ex;
370
371 err = mlx5_core_get_caps(dev, MLX5_CAP_GENERAL, HCA_CAP_OPMOD_GET_CUR);
372 if (err)
373 goto query_ex;
374
375 set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx,
376 capability);
377 memcpy(set_hca_cap, dev->hca_caps_cur[MLX5_CAP_GENERAL],
378 MLX5_ST_SZ_BYTES(cmd_hca_cap));
379
380 mlx5_core_dbg(dev, "Current Pkey table size %d Setting new size %d\n",
381 mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(dev, pkey_table_size)),
382 128);
383 /* we limit the size of the pkey table to 128 entries for now */
384 MLX5_SET(cmd_hca_cap, set_hca_cap, pkey_table_size,
385 to_fw_pkey_sz(128));
386
387 if (prof->mask & MLX5_PROF_MASK_QP_SIZE)
388 MLX5_SET(cmd_hca_cap, set_hca_cap, log_max_qp,
389 prof->log_max_qp);
390
391 /* disable cmdif checksum */
392 MLX5_SET(cmd_hca_cap, set_hca_cap, cmdif_checksum, 0);
393
394 MLX5_SET(cmd_hca_cap, set_hca_cap, log_uar_page_sz, PAGE_SHIFT - 12);
395
396 err = set_caps(dev, set_ctx, set_sz);
397
398 query_ex:
399 kfree(set_ctx);
400 return err;
401 }
402
403 static int set_hca_ctrl(struct mlx5_core_dev *dev)
404 {
405 struct mlx5_reg_host_endianess he_in;
406 struct mlx5_reg_host_endianess he_out;
407 int err;
408
409 memset(&he_in, 0, sizeof(he_in));
410 he_in.he = MLX5_SET_HOST_ENDIANNESS;
411 err = mlx5_core_access_reg(dev, &he_in, sizeof(he_in),
412 &he_out, sizeof(he_out),
413 MLX5_REG_HOST_ENDIANNESS, 0, 1);
414 return err;
415 }
416
417 static int mlx5_core_enable_hca(struct mlx5_core_dev *dev)
418 {
419 int err;
420 struct mlx5_enable_hca_mbox_in in;
421 struct mlx5_enable_hca_mbox_out out;
422
423 memset(&in, 0, sizeof(in));
424 memset(&out, 0, sizeof(out));
425 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ENABLE_HCA);
426 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
427 if (err)
428 return err;
429
430 if (out.hdr.status)
431 return mlx5_cmd_status_to_err(&out.hdr);
432
433 return 0;
434 }
435
436 static int mlx5_core_disable_hca(struct mlx5_core_dev *dev)
437 {
438 int err;
439 struct mlx5_disable_hca_mbox_in in;
440 struct mlx5_disable_hca_mbox_out out;
441
442 memset(&in, 0, sizeof(in));
443 memset(&out, 0, sizeof(out));
444 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DISABLE_HCA);
445 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
446 if (err)
447 return err;
448
449 if (out.hdr.status)
450 return mlx5_cmd_status_to_err(&out.hdr);
451
452 return 0;
453 }
454
455 static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i)
456 {
457 struct mlx5_priv *priv = &mdev->priv;
458 struct msix_entry *msix = priv->msix_arr;
459 int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector;
460 int numa_node = priv->numa_node;
461 int err;
462
463 if (!zalloc_cpumask_var(&priv->irq_info[i].mask, GFP_KERNEL)) {
464 mlx5_core_warn(mdev, "zalloc_cpumask_var failed");
465 return -ENOMEM;
466 }
467
468 cpumask_set_cpu(cpumask_local_spread(i, numa_node),
469 priv->irq_info[i].mask);
470
471 err = irq_set_affinity_hint(irq, priv->irq_info[i].mask);
472 if (err) {
473 mlx5_core_warn(mdev, "irq_set_affinity_hint failed,irq 0x%.4x",
474 irq);
475 goto err_clear_mask;
476 }
477
478 return 0;
479
480 err_clear_mask:
481 free_cpumask_var(priv->irq_info[i].mask);
482 return err;
483 }
484
485 static void mlx5_irq_clear_affinity_hint(struct mlx5_core_dev *mdev, int i)
486 {
487 struct mlx5_priv *priv = &mdev->priv;
488 struct msix_entry *msix = priv->msix_arr;
489 int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector;
490
491 irq_set_affinity_hint(irq, NULL);
492 free_cpumask_var(priv->irq_info[i].mask);
493 }
494
495 static int mlx5_irq_set_affinity_hints(struct mlx5_core_dev *mdev)
496 {
497 int err;
498 int i;
499
500 for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++) {
501 err = mlx5_irq_set_affinity_hint(mdev, i);
502 if (err)
503 goto err_out;
504 }
505
506 return 0;
507
508 err_out:
509 for (i--; i >= 0; i--)
510 mlx5_irq_clear_affinity_hint(mdev, i);
511
512 return err;
513 }
514
515 static void mlx5_irq_clear_affinity_hints(struct mlx5_core_dev *mdev)
516 {
517 int i;
518
519 for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++)
520 mlx5_irq_clear_affinity_hint(mdev, i);
521 }
522
523 int mlx5_vector2eqn(struct mlx5_core_dev *dev, int vector, int *eqn, int *irqn)
524 {
525 struct mlx5_eq_table *table = &dev->priv.eq_table;
526 struct mlx5_eq *eq, *n;
527 int err = -ENOENT;
528
529 spin_lock(&table->lock);
530 list_for_each_entry_safe(eq, n, &table->comp_eqs_list, list) {
531 if (eq->index == vector) {
532 *eqn = eq->eqn;
533 *irqn = eq->irqn;
534 err = 0;
535 break;
536 }
537 }
538 spin_unlock(&table->lock);
539
540 return err;
541 }
542 EXPORT_SYMBOL(mlx5_vector2eqn);
543
544 static void free_comp_eqs(struct mlx5_core_dev *dev)
545 {
546 struct mlx5_eq_table *table = &dev->priv.eq_table;
547 struct mlx5_eq *eq, *n;
548
549 spin_lock(&table->lock);
550 list_for_each_entry_safe(eq, n, &table->comp_eqs_list, list) {
551 list_del(&eq->list);
552 spin_unlock(&table->lock);
553 if (mlx5_destroy_unmap_eq(dev, eq))
554 mlx5_core_warn(dev, "failed to destroy EQ 0x%x\n",
555 eq->eqn);
556 kfree(eq);
557 spin_lock(&table->lock);
558 }
559 spin_unlock(&table->lock);
560 }
561
562 static int alloc_comp_eqs(struct mlx5_core_dev *dev)
563 {
564 struct mlx5_eq_table *table = &dev->priv.eq_table;
565 char name[MLX5_MAX_IRQ_NAME];
566 struct mlx5_eq *eq;
567 int ncomp_vec;
568 int nent;
569 int err;
570 int i;
571
572 INIT_LIST_HEAD(&table->comp_eqs_list);
573 ncomp_vec = table->num_comp_vectors;
574 nent = MLX5_COMP_EQ_SIZE;
575 for (i = 0; i < ncomp_vec; i++) {
576 eq = kzalloc(sizeof(*eq), GFP_KERNEL);
577 if (!eq) {
578 err = -ENOMEM;
579 goto clean;
580 }
581
582 snprintf(name, MLX5_MAX_IRQ_NAME, "mlx5_comp%d", i);
583 err = mlx5_create_map_eq(dev, eq,
584 i + MLX5_EQ_VEC_COMP_BASE, nent, 0,
585 name, &dev->priv.uuari.uars[0]);
586 if (err) {
587 kfree(eq);
588 goto clean;
589 }
590 mlx5_core_dbg(dev, "allocated completion EQN %d\n", eq->eqn);
591 eq->index = i;
592 spin_lock(&table->lock);
593 list_add_tail(&eq->list, &table->comp_eqs_list);
594 spin_unlock(&table->lock);
595 }
596
597 return 0;
598
599 clean:
600 free_comp_eqs(dev);
601 return err;
602 }
603
604 #ifdef CONFIG_MLX5_CORE_EN
605 static int mlx5_core_set_issi(struct mlx5_core_dev *dev)
606 {
607 u32 query_in[MLX5_ST_SZ_DW(query_issi_in)];
608 u32 query_out[MLX5_ST_SZ_DW(query_issi_out)];
609 u32 set_in[MLX5_ST_SZ_DW(set_issi_in)];
610 u32 set_out[MLX5_ST_SZ_DW(set_issi_out)];
611 int err;
612 u32 sup_issi;
613
614 memset(query_in, 0, sizeof(query_in));
615 memset(query_out, 0, sizeof(query_out));
616
617 MLX5_SET(query_issi_in, query_in, opcode, MLX5_CMD_OP_QUERY_ISSI);
618
619 err = mlx5_cmd_exec_check_status(dev, query_in, sizeof(query_in),
620 query_out, sizeof(query_out));
621 if (err) {
622 if (((struct mlx5_outbox_hdr *)query_out)->status ==
623 MLX5_CMD_STAT_BAD_OP_ERR) {
624 pr_debug("Only ISSI 0 is supported\n");
625 return 0;
626 }
627
628 pr_err("failed to query ISSI\n");
629 return err;
630 }
631
632 sup_issi = MLX5_GET(query_issi_out, query_out, supported_issi_dw0);
633
634 if (sup_issi & (1 << 1)) {
635 memset(set_in, 0, sizeof(set_in));
636 memset(set_out, 0, sizeof(set_out));
637
638 MLX5_SET(set_issi_in, set_in, opcode, MLX5_CMD_OP_SET_ISSI);
639 MLX5_SET(set_issi_in, set_in, current_issi, 1);
640
641 err = mlx5_cmd_exec_check_status(dev, set_in, sizeof(set_in),
642 set_out, sizeof(set_out));
643 if (err) {
644 pr_err("failed to set ISSI=1\n");
645 return err;
646 }
647
648 dev->issi = 1;
649
650 return 0;
651 } else if (sup_issi & (1 << 0) || !sup_issi) {
652 return 0;
653 }
654
655 return -ENOTSUPP;
656 }
657 #endif
658
659 static int map_bf_area(struct mlx5_core_dev *dev)
660 {
661 resource_size_t bf_start = pci_resource_start(dev->pdev, 0);
662 resource_size_t bf_len = pci_resource_len(dev->pdev, 0);
663
664 dev->priv.bf_mapping = io_mapping_create_wc(bf_start, bf_len);
665
666 return dev->priv.bf_mapping ? 0 : -ENOMEM;
667 }
668
669 static void unmap_bf_area(struct mlx5_core_dev *dev)
670 {
671 if (dev->priv.bf_mapping)
672 io_mapping_free(dev->priv.bf_mapping);
673 }
674
675 static int mlx5_dev_init(struct mlx5_core_dev *dev, struct pci_dev *pdev)
676 {
677 struct mlx5_priv *priv = &dev->priv;
678 int err;
679
680 dev->pdev = pdev;
681 pci_set_drvdata(dev->pdev, dev);
682 strncpy(priv->name, dev_name(&pdev->dev), MLX5_MAX_NAME_LEN);
683 priv->name[MLX5_MAX_NAME_LEN - 1] = 0;
684
685 mutex_init(&priv->pgdir_mutex);
686 INIT_LIST_HEAD(&priv->pgdir_list);
687 spin_lock_init(&priv->mkey_lock);
688
689 mutex_init(&priv->alloc_mutex);
690
691 priv->numa_node = dev_to_node(&dev->pdev->dev);
692
693 priv->dbg_root = debugfs_create_dir(dev_name(&pdev->dev), mlx5_debugfs_root);
694 if (!priv->dbg_root)
695 return -ENOMEM;
696
697 err = pci_enable_device(pdev);
698 if (err) {
699 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
700 goto err_dbg;
701 }
702
703 err = request_bar(pdev);
704 if (err) {
705 dev_err(&pdev->dev, "error requesting BARs, aborting\n");
706 goto err_disable;
707 }
708
709 pci_set_master(pdev);
710
711 err = set_dma_caps(pdev);
712 if (err) {
713 dev_err(&pdev->dev, "Failed setting DMA capabilities mask, aborting\n");
714 goto err_clr_master;
715 }
716
717 dev->iseg_base = pci_resource_start(dev->pdev, 0);
718 dev->iseg = ioremap(dev->iseg_base, sizeof(*dev->iseg));
719 if (!dev->iseg) {
720 err = -ENOMEM;
721 dev_err(&pdev->dev, "Failed mapping initialization segment, aborting\n");
722 goto err_clr_master;
723 }
724 dev_info(&pdev->dev, "firmware version: %d.%d.%d\n", fw_rev_maj(dev),
725 fw_rev_min(dev), fw_rev_sub(dev));
726
727 err = mlx5_cmd_init(dev);
728 if (err) {
729 dev_err(&pdev->dev, "Failed initializing command interface, aborting\n");
730 goto err_unmap;
731 }
732
733 mlx5_pagealloc_init(dev);
734
735 err = mlx5_core_enable_hca(dev);
736 if (err) {
737 dev_err(&pdev->dev, "enable hca failed\n");
738 goto err_pagealloc_cleanup;
739 }
740
741 #ifdef CONFIG_MLX5_CORE_EN
742 err = mlx5_core_set_issi(dev);
743 if (err) {
744 dev_err(&pdev->dev, "failed to set issi\n");
745 goto err_disable_hca;
746 }
747 #endif
748
749 err = mlx5_satisfy_startup_pages(dev, 1);
750 if (err) {
751 dev_err(&pdev->dev, "failed to allocate boot pages\n");
752 goto err_disable_hca;
753 }
754
755 err = set_hca_ctrl(dev);
756 if (err) {
757 dev_err(&pdev->dev, "set_hca_ctrl failed\n");
758 goto reclaim_boot_pages;
759 }
760
761 err = handle_hca_cap(dev);
762 if (err) {
763 dev_err(&pdev->dev, "handle_hca_cap failed\n");
764 goto reclaim_boot_pages;
765 }
766
767 err = mlx5_satisfy_startup_pages(dev, 0);
768 if (err) {
769 dev_err(&pdev->dev, "failed to allocate init pages\n");
770 goto reclaim_boot_pages;
771 }
772
773 err = mlx5_pagealloc_start(dev);
774 if (err) {
775 dev_err(&pdev->dev, "mlx5_pagealloc_start failed\n");
776 goto reclaim_boot_pages;
777 }
778
779 err = mlx5_cmd_init_hca(dev);
780 if (err) {
781 dev_err(&pdev->dev, "init hca failed\n");
782 goto err_pagealloc_stop;
783 }
784
785 mlx5_start_health_poll(dev);
786
787 err = mlx5_query_hca_caps(dev);
788 if (err) {
789 dev_err(&pdev->dev, "query hca failed\n");
790 goto err_stop_poll;
791 }
792
793 err = mlx5_query_board_id(dev);
794 if (err) {
795 dev_err(&pdev->dev, "query board id failed\n");
796 goto err_stop_poll;
797 }
798
799 err = mlx5_enable_msix(dev);
800 if (err) {
801 dev_err(&pdev->dev, "enable msix failed\n");
802 goto err_stop_poll;
803 }
804
805 err = mlx5_eq_init(dev);
806 if (err) {
807 dev_err(&pdev->dev, "failed to initialize eq\n");
808 goto disable_msix;
809 }
810
811 err = mlx5_alloc_uuars(dev, &priv->uuari);
812 if (err) {
813 dev_err(&pdev->dev, "Failed allocating uar, aborting\n");
814 goto err_eq_cleanup;
815 }
816
817 err = mlx5_start_eqs(dev);
818 if (err) {
819 dev_err(&pdev->dev, "Failed to start pages and async EQs\n");
820 goto err_free_uar;
821 }
822
823 err = alloc_comp_eqs(dev);
824 if (err) {
825 dev_err(&pdev->dev, "Failed to alloc completion EQs\n");
826 goto err_stop_eqs;
827 }
828
829 if (map_bf_area(dev))
830 dev_err(&pdev->dev, "Failed to map blue flame area\n");
831
832 err = mlx5_irq_set_affinity_hints(dev);
833 if (err) {
834 dev_err(&pdev->dev, "Failed to alloc affinity hint cpumask\n");
835 goto err_unmap_bf_area;
836 }
837
838 MLX5_INIT_DOORBELL_LOCK(&priv->cq_uar_lock);
839
840 mlx5_init_cq_table(dev);
841 mlx5_init_qp_table(dev);
842 mlx5_init_srq_table(dev);
843 mlx5_init_mr_table(dev);
844
845 return 0;
846
847 err_unmap_bf_area:
848 unmap_bf_area(dev);
849
850 free_comp_eqs(dev);
851
852 err_stop_eqs:
853 mlx5_stop_eqs(dev);
854
855 err_free_uar:
856 mlx5_free_uuars(dev, &priv->uuari);
857
858 err_eq_cleanup:
859 mlx5_eq_cleanup(dev);
860
861 disable_msix:
862 mlx5_disable_msix(dev);
863
864 err_stop_poll:
865 mlx5_stop_health_poll(dev);
866 if (mlx5_cmd_teardown_hca(dev)) {
867 dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n");
868 return err;
869 }
870
871 err_pagealloc_stop:
872 mlx5_pagealloc_stop(dev);
873
874 reclaim_boot_pages:
875 mlx5_reclaim_startup_pages(dev);
876
877 err_disable_hca:
878 mlx5_core_disable_hca(dev);
879
880 err_pagealloc_cleanup:
881 mlx5_pagealloc_cleanup(dev);
882 mlx5_cmd_cleanup(dev);
883
884 err_unmap:
885 iounmap(dev->iseg);
886
887 err_clr_master:
888 pci_clear_master(dev->pdev);
889 release_bar(dev->pdev);
890
891 err_disable:
892 pci_disable_device(dev->pdev);
893
894 err_dbg:
895 debugfs_remove(priv->dbg_root);
896 return err;
897 }
898
899 static void mlx5_dev_cleanup(struct mlx5_core_dev *dev)
900 {
901 struct mlx5_priv *priv = &dev->priv;
902
903 mlx5_cleanup_srq_table(dev);
904 mlx5_cleanup_qp_table(dev);
905 mlx5_cleanup_cq_table(dev);
906 mlx5_irq_clear_affinity_hints(dev);
907 unmap_bf_area(dev);
908 free_comp_eqs(dev);
909 mlx5_stop_eqs(dev);
910 mlx5_free_uuars(dev, &priv->uuari);
911 mlx5_eq_cleanup(dev);
912 mlx5_disable_msix(dev);
913 mlx5_stop_health_poll(dev);
914 if (mlx5_cmd_teardown_hca(dev)) {
915 dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n");
916 return;
917 }
918 mlx5_pagealloc_stop(dev);
919 mlx5_reclaim_startup_pages(dev);
920 mlx5_core_disable_hca(dev);
921 mlx5_pagealloc_cleanup(dev);
922 mlx5_cmd_cleanup(dev);
923 iounmap(dev->iseg);
924 pci_clear_master(dev->pdev);
925 release_bar(dev->pdev);
926 pci_disable_device(dev->pdev);
927 debugfs_remove(priv->dbg_root);
928 }
929
930 static void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv)
931 {
932 struct mlx5_device_context *dev_ctx;
933 struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv);
934
935 dev_ctx = kmalloc(sizeof(*dev_ctx), GFP_KERNEL);
936 if (!dev_ctx) {
937 pr_warn("mlx5_add_device: alloc context failed\n");
938 return;
939 }
940
941 dev_ctx->intf = intf;
942 dev_ctx->context = intf->add(dev);
943
944 if (dev_ctx->context) {
945 spin_lock_irq(&priv->ctx_lock);
946 list_add_tail(&dev_ctx->list, &priv->ctx_list);
947 spin_unlock_irq(&priv->ctx_lock);
948 } else {
949 kfree(dev_ctx);
950 }
951 }
952
953 static void mlx5_remove_device(struct mlx5_interface *intf, struct mlx5_priv *priv)
954 {
955 struct mlx5_device_context *dev_ctx;
956 struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv);
957
958 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
959 if (dev_ctx->intf == intf) {
960 spin_lock_irq(&priv->ctx_lock);
961 list_del(&dev_ctx->list);
962 spin_unlock_irq(&priv->ctx_lock);
963
964 intf->remove(dev, dev_ctx->context);
965 kfree(dev_ctx);
966 return;
967 }
968 }
969 static int mlx5_register_device(struct mlx5_core_dev *dev)
970 {
971 struct mlx5_priv *priv = &dev->priv;
972 struct mlx5_interface *intf;
973
974 mutex_lock(&intf_mutex);
975 list_add_tail(&priv->dev_list, &dev_list);
976 list_for_each_entry(intf, &intf_list, list)
977 mlx5_add_device(intf, priv);
978 mutex_unlock(&intf_mutex);
979
980 return 0;
981 }
982 static void mlx5_unregister_device(struct mlx5_core_dev *dev)
983 {
984 struct mlx5_priv *priv = &dev->priv;
985 struct mlx5_interface *intf;
986
987 mutex_lock(&intf_mutex);
988 list_for_each_entry(intf, &intf_list, list)
989 mlx5_remove_device(intf, priv);
990 list_del(&priv->dev_list);
991 mutex_unlock(&intf_mutex);
992 }
993
994 int mlx5_register_interface(struct mlx5_interface *intf)
995 {
996 struct mlx5_priv *priv;
997
998 if (!intf->add || !intf->remove)
999 return -EINVAL;
1000
1001 mutex_lock(&intf_mutex);
1002 list_add_tail(&intf->list, &intf_list);
1003 list_for_each_entry(priv, &dev_list, dev_list)
1004 mlx5_add_device(intf, priv);
1005 mutex_unlock(&intf_mutex);
1006
1007 return 0;
1008 }
1009 EXPORT_SYMBOL(mlx5_register_interface);
1010
1011 void mlx5_unregister_interface(struct mlx5_interface *intf)
1012 {
1013 struct mlx5_priv *priv;
1014
1015 mutex_lock(&intf_mutex);
1016 list_for_each_entry(priv, &dev_list, dev_list)
1017 mlx5_remove_device(intf, priv);
1018 list_del(&intf->list);
1019 mutex_unlock(&intf_mutex);
1020 }
1021 EXPORT_SYMBOL(mlx5_unregister_interface);
1022
1023 void *mlx5_get_protocol_dev(struct mlx5_core_dev *mdev, int protocol)
1024 {
1025 struct mlx5_priv *priv = &mdev->priv;
1026 struct mlx5_device_context *dev_ctx;
1027 unsigned long flags;
1028 void *result = NULL;
1029
1030 spin_lock_irqsave(&priv->ctx_lock, flags);
1031
1032 list_for_each_entry(dev_ctx, &mdev->priv.ctx_list, list)
1033 if ((dev_ctx->intf->protocol == protocol) &&
1034 dev_ctx->intf->get_dev) {
1035 result = dev_ctx->intf->get_dev(dev_ctx->context);
1036 break;
1037 }
1038
1039 spin_unlock_irqrestore(&priv->ctx_lock, flags);
1040
1041 return result;
1042 }
1043 EXPORT_SYMBOL(mlx5_get_protocol_dev);
1044
1045 static void mlx5_core_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event,
1046 unsigned long param)
1047 {
1048 struct mlx5_priv *priv = &dev->priv;
1049 struct mlx5_device_context *dev_ctx;
1050 unsigned long flags;
1051
1052 spin_lock_irqsave(&priv->ctx_lock, flags);
1053
1054 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
1055 if (dev_ctx->intf->event)
1056 dev_ctx->intf->event(dev, dev_ctx->context, event, param);
1057
1058 spin_unlock_irqrestore(&priv->ctx_lock, flags);
1059 }
1060
1061 struct mlx5_core_event_handler {
1062 void (*event)(struct mlx5_core_dev *dev,
1063 enum mlx5_dev_event event,
1064 void *data);
1065 };
1066
1067 #define MLX5_IB_MOD "mlx5_ib"
1068
1069 static int init_one(struct pci_dev *pdev,
1070 const struct pci_device_id *id)
1071 {
1072 struct mlx5_core_dev *dev;
1073 struct mlx5_priv *priv;
1074 int err;
1075
1076 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1077 if (!dev) {
1078 dev_err(&pdev->dev, "kzalloc failed\n");
1079 return -ENOMEM;
1080 }
1081 priv = &dev->priv;
1082
1083 pci_set_drvdata(pdev, dev);
1084
1085 if (prof_sel < 0 || prof_sel >= ARRAY_SIZE(profile)) {
1086 pr_warn("selected profile out of range, selecting default (%d)\n",
1087 MLX5_DEFAULT_PROF);
1088 prof_sel = MLX5_DEFAULT_PROF;
1089 }
1090 dev->profile = &profile[prof_sel];
1091 dev->event = mlx5_core_event;
1092
1093 INIT_LIST_HEAD(&priv->ctx_list);
1094 spin_lock_init(&priv->ctx_lock);
1095 err = mlx5_dev_init(dev, pdev);
1096 if (err) {
1097 dev_err(&pdev->dev, "mlx5_dev_init failed %d\n", err);
1098 goto out;
1099 }
1100
1101 err = mlx5_register_device(dev);
1102 if (err) {
1103 dev_err(&pdev->dev, "mlx5_register_device failed %d\n", err);
1104 goto out_init;
1105 }
1106
1107 err = request_module_nowait(MLX5_IB_MOD);
1108 if (err)
1109 pr_info("failed request module on %s\n", MLX5_IB_MOD);
1110
1111 return 0;
1112
1113 out_init:
1114 mlx5_dev_cleanup(dev);
1115 out:
1116 kfree(dev);
1117 return err;
1118 }
1119 static void remove_one(struct pci_dev *pdev)
1120 {
1121 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1122
1123 mlx5_unregister_device(dev);
1124 mlx5_dev_cleanup(dev);
1125 kfree(dev);
1126 }
1127
1128 static const struct pci_device_id mlx5_core_pci_table[] = {
1129 { PCI_VDEVICE(MELLANOX, 0x1011) }, /* Connect-IB */
1130 { PCI_VDEVICE(MELLANOX, 0x1012) }, /* Connect-IB VF */
1131 { PCI_VDEVICE(MELLANOX, 0x1013) }, /* ConnectX-4 */
1132 { PCI_VDEVICE(MELLANOX, 0x1014) }, /* ConnectX-4 VF */
1133 { PCI_VDEVICE(MELLANOX, 0x1015) }, /* ConnectX-4LX */
1134 { PCI_VDEVICE(MELLANOX, 0x1016) }, /* ConnectX-4LX VF */
1135 { 0, }
1136 };
1137
1138 MODULE_DEVICE_TABLE(pci, mlx5_core_pci_table);
1139
1140 static struct pci_driver mlx5_core_driver = {
1141 .name = DRIVER_NAME,
1142 .id_table = mlx5_core_pci_table,
1143 .probe = init_one,
1144 .remove = remove_one
1145 };
1146
1147 static int __init init(void)
1148 {
1149 int err;
1150
1151 mlx5_register_debugfs();
1152 mlx5_core_wq = create_singlethread_workqueue("mlx5_core_wq");
1153 if (!mlx5_core_wq) {
1154 err = -ENOMEM;
1155 goto err_debug;
1156 }
1157 mlx5_health_init();
1158
1159 err = pci_register_driver(&mlx5_core_driver);
1160 if (err)
1161 goto err_health;
1162
1163 #ifdef CONFIG_MLX5_CORE_EN
1164 mlx5e_init();
1165 #endif
1166
1167 return 0;
1168
1169 err_health:
1170 mlx5_health_cleanup();
1171 destroy_workqueue(mlx5_core_wq);
1172 err_debug:
1173 mlx5_unregister_debugfs();
1174 return err;
1175 }
1176
1177 static void __exit cleanup(void)
1178 {
1179 #ifdef CONFIG_MLX5_CORE_EN
1180 mlx5e_cleanup();
1181 #endif
1182 pci_unregister_driver(&mlx5_core_driver);
1183 mlx5_health_cleanup();
1184 destroy_workqueue(mlx5_core_wq);
1185 mlx5_unregister_debugfs();
1186 }
1187
1188 module_init(init);
1189 module_exit(cleanup);
Linux kernel - Deliverables
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