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 <linux/highmem.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/mlx5/driver.h>
42 #include <linux/mlx5/cq.h>
43 #include <linux/mlx5/qp.h>
44 #include <linux/mlx5/srq.h>
45 #include <linux/debugfs.h>
46 #include <linux/mlx5/mlx5_ifc.h>
47 #include "mlx5_core.h"
48
49 #define DRIVER_NAME "mlx5_core"
50 #define DRIVER_VERSION "2.2-1"
51 #define DRIVER_RELDATE "Feb 2014"
52
53 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
54 MODULE_DESCRIPTION("Mellanox ConnectX-IB HCA core library");
55 MODULE_LICENSE("Dual BSD/GPL");
56 MODULE_VERSION(DRIVER_VERSION);
57
58 int mlx5_core_debug_mask;
59 module_param_named(debug_mask, mlx5_core_debug_mask, int, 0644);
60 MODULE_PARM_DESC(debug_mask, "debug mask: 1 = dump cmd data, 2 = dump cmd exec time, 3 = both. Default=0");
61
62 #define MLX5_DEFAULT_PROF 2
63 static int prof_sel = MLX5_DEFAULT_PROF;
64 module_param_named(prof_sel, prof_sel, int, 0444);
65 MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2");
66
67 struct workqueue_struct *mlx5_core_wq;
68 static LIST_HEAD(intf_list);
69 static LIST_HEAD(dev_list);
70 static DEFINE_MUTEX(intf_mutex);
71
72 struct mlx5_device_context {
73 struct list_head list;
74 struct mlx5_interface *intf;
75 void *context;
76 };
77
78 static struct mlx5_profile profile[] = {
79 [0] = {
80 .mask = 0,
81 },
82 [1] = {
83 .mask = MLX5_PROF_MASK_QP_SIZE,
84 .log_max_qp = 12,
85 },
86 [2] = {
87 .mask = MLX5_PROF_MASK_QP_SIZE |
88 MLX5_PROF_MASK_MR_CACHE,
89 .log_max_qp = 18,
90 .mr_cache[0] = {
91 .size = 500,
92 .limit = 250
93 },
94 .mr_cache[1] = {
95 .size = 500,
96 .limit = 250
97 },
98 .mr_cache[2] = {
99 .size = 500,
100 .limit = 250
101 },
102 .mr_cache[3] = {
103 .size = 500,
104 .limit = 250
105 },
106 .mr_cache[4] = {
107 .size = 500,
108 .limit = 250
109 },
110 .mr_cache[5] = {
111 .size = 500,
112 .limit = 250
113 },
114 .mr_cache[6] = {
115 .size = 500,
116 .limit = 250
117 },
118 .mr_cache[7] = {
119 .size = 500,
120 .limit = 250
121 },
122 .mr_cache[8] = {
123 .size = 500,
124 .limit = 250
125 },
126 .mr_cache[9] = {
127 .size = 500,
128 .limit = 250
129 },
130 .mr_cache[10] = {
131 .size = 500,
132 .limit = 250
133 },
134 .mr_cache[11] = {
135 .size = 500,
136 .limit = 250
137 },
138 .mr_cache[12] = {
139 .size = 64,
140 .limit = 32
141 },
142 .mr_cache[13] = {
143 .size = 32,
144 .limit = 16
145 },
146 .mr_cache[14] = {
147 .size = 16,
148 .limit = 8
149 },
150 .mr_cache[15] = {
151 .size = 8,
152 .limit = 4
153 },
154 },
155 };
156
set_dma_caps(struct pci_dev * pdev)157 static int set_dma_caps(struct pci_dev *pdev)
158 {
159 int err;
160
161 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
162 if (err) {
163 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
164 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
165 if (err) {
166 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
167 return err;
168 }
169 }
170
171 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
172 if (err) {
173 dev_warn(&pdev->dev,
174 "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
175 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
176 if (err) {
177 dev_err(&pdev->dev,
178 "Can't set consistent PCI DMA mask, aborting\n");
179 return err;
180 }
181 }
182
183 dma_set_max_seg_size(&pdev->dev, 2u * 1024 * 1024 * 1024);
184 return err;
185 }
186
request_bar(struct pci_dev * pdev)187 static int request_bar(struct pci_dev *pdev)
188 {
189 int err = 0;
190
191 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
192 dev_err(&pdev->dev, "Missing registers BAR, aborting\n");
193 return -ENODEV;
194 }
195
196 err = pci_request_regions(pdev, DRIVER_NAME);
197 if (err)
198 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
199
200 return err;
201 }
202
release_bar(struct pci_dev * pdev)203 static void release_bar(struct pci_dev *pdev)
204 {
205 pci_release_regions(pdev);
206 }
207
mlx5_enable_msix(struct mlx5_core_dev * dev)208 static int mlx5_enable_msix(struct mlx5_core_dev *dev)
209 {
210 struct mlx5_eq_table *table = &dev->priv.eq_table;
211 int num_eqs = 1 << dev->caps.gen.log_max_eq;
212 int nvec;
213 int i;
214
215 nvec = dev->caps.gen.num_ports * num_online_cpus() + 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 table->msix_arr = kzalloc(nvec * sizeof(*table->msix_arr), GFP_KERNEL);
221 if (!table->msix_arr)
222 return -ENOMEM;
223
224 for (i = 0; i < nvec; i++)
225 table->msix_arr[i].entry = i;
226
227 nvec = pci_enable_msix_range(dev->pdev, table->msix_arr,
228 MLX5_EQ_VEC_COMP_BASE, nvec);
229 if (nvec < 0)
230 return nvec;
231
232 table->num_comp_vectors = nvec - MLX5_EQ_VEC_COMP_BASE;
233
234 return 0;
235 }
236
mlx5_disable_msix(struct mlx5_core_dev * dev)237 static void mlx5_disable_msix(struct mlx5_core_dev *dev)
238 {
239 struct mlx5_eq_table *table = &dev->priv.eq_table;
240
241 pci_disable_msix(dev->pdev);
242 kfree(table->msix_arr);
243 }
244
245 struct mlx5_reg_host_endianess {
246 u8 he;
247 u8 rsvd[15];
248 };
249
250
251 #define CAP_MASK(pos, size) ((u64)((1 << (size)) - 1) << (pos))
252
253 enum {
254 MLX5_CAP_BITS_RW_MASK = CAP_MASK(MLX5_CAP_OFF_CMDIF_CSUM, 2) |
255 MLX5_DEV_CAP_FLAG_DCT,
256 };
257
to_fw_pkey_sz(u32 size)258 static u16 to_fw_pkey_sz(u32 size)
259 {
260 switch (size) {
261 case 128:
262 return 0;
263 case 256:
264 return 1;
265 case 512:
266 return 2;
267 case 1024:
268 return 3;
269 case 2048:
270 return 4;
271 case 4096:
272 return 5;
273 default:
274 pr_warn("invalid pkey table size %d\n", size);
275 return 0;
276 }
277 }
278
279 /* selectively copy writable fields clearing any reserved area
280 */
copy_rw_fields(void * to,struct mlx5_caps * from)281 static void copy_rw_fields(void *to, struct mlx5_caps *from)
282 {
283 __be64 *flags_off = (__be64 *)MLX5_ADDR_OF(cmd_hca_cap, to, reserved_22);
284 u64 v64;
285
286 MLX5_SET(cmd_hca_cap, to, log_max_qp, from->gen.log_max_qp);
287 MLX5_SET(cmd_hca_cap, to, log_max_ra_req_qp, from->gen.log_max_ra_req_qp);
288 MLX5_SET(cmd_hca_cap, to, log_max_ra_res_qp, from->gen.log_max_ra_res_qp);
289 MLX5_SET(cmd_hca_cap, to, pkey_table_size, from->gen.pkey_table_size);
290 MLX5_SET(cmd_hca_cap, to, log_max_ra_req_dc, from->gen.log_max_ra_req_dc);
291 MLX5_SET(cmd_hca_cap, to, log_max_ra_res_dc, from->gen.log_max_ra_res_dc);
292 MLX5_SET(cmd_hca_cap, to, pkey_table_size, to_fw_pkey_sz(from->gen.pkey_table_size));
293 v64 = from->gen.flags & MLX5_CAP_BITS_RW_MASK;
294 *flags_off = cpu_to_be64(v64);
295 }
296
get_pkey_table_size(int pkey)297 static u16 get_pkey_table_size(int pkey)
298 {
299 if (pkey > MLX5_MAX_LOG_PKEY_TABLE)
300 return 0;
301
302 return MLX5_MIN_PKEY_TABLE_SIZE << pkey;
303 }
304
fw2drv_caps(struct mlx5_caps * caps,void * out)305 static void fw2drv_caps(struct mlx5_caps *caps, void *out)
306 {
307 struct mlx5_general_caps *gen = &caps->gen;
308
309 gen->max_srq_wqes = 1 << MLX5_GET_PR(cmd_hca_cap, out, log_max_srq_sz);
310 gen->max_wqes = 1 << MLX5_GET_PR(cmd_hca_cap, out, log_max_qp_sz);
311 gen->log_max_qp = MLX5_GET_PR(cmd_hca_cap, out, log_max_qp);
312 gen->log_max_strq = MLX5_GET_PR(cmd_hca_cap, out, log_max_strq_sz);
313 gen->log_max_srq = MLX5_GET_PR(cmd_hca_cap, out, log_max_srqs);
314 gen->max_cqes = 1 << MLX5_GET_PR(cmd_hca_cap, out, log_max_cq_sz);
315 gen->log_max_cq = MLX5_GET_PR(cmd_hca_cap, out, log_max_cq);
316 gen->max_eqes = 1 << MLX5_GET_PR(cmd_hca_cap, out, log_max_eq_sz);
317 gen->log_max_mkey = MLX5_GET_PR(cmd_hca_cap, out, log_max_mkey);
318 gen->log_max_eq = MLX5_GET_PR(cmd_hca_cap, out, log_max_eq);
319 gen->max_indirection = MLX5_GET_PR(cmd_hca_cap, out, max_indirection);
320 gen->log_max_mrw_sz = MLX5_GET_PR(cmd_hca_cap, out, log_max_mrw_sz);
321 gen->log_max_bsf_list_size = MLX5_GET_PR(cmd_hca_cap, out, log_max_bsf_list_size);
322 gen->log_max_klm_list_size = MLX5_GET_PR(cmd_hca_cap, out, log_max_klm_list_size);
323 gen->log_max_ra_req_dc = MLX5_GET_PR(cmd_hca_cap, out, log_max_ra_req_dc);
324 gen->log_max_ra_res_dc = MLX5_GET_PR(cmd_hca_cap, out, log_max_ra_res_dc);
325 gen->log_max_ra_req_qp = MLX5_GET_PR(cmd_hca_cap, out, log_max_ra_req_qp);
326 gen->log_max_ra_res_qp = MLX5_GET_PR(cmd_hca_cap, out, log_max_ra_res_qp);
327 gen->max_qp_counters = MLX5_GET_PR(cmd_hca_cap, out, max_qp_cnt);
328 gen->pkey_table_size = get_pkey_table_size(MLX5_GET_PR(cmd_hca_cap, out, pkey_table_size));
329 gen->local_ca_ack_delay = MLX5_GET_PR(cmd_hca_cap, out, local_ca_ack_delay);
330 gen->num_ports = MLX5_GET_PR(cmd_hca_cap, out, num_ports);
331 gen->log_max_msg = MLX5_GET_PR(cmd_hca_cap, out, log_max_msg);
332 gen->stat_rate_support = MLX5_GET_PR(cmd_hca_cap, out, stat_rate_support);
333 gen->flags = be64_to_cpu(*(__be64 *)MLX5_ADDR_OF(cmd_hca_cap, out, reserved_22));
334 pr_debug("flags = 0x%llx\n", gen->flags);
335 gen->uar_sz = MLX5_GET_PR(cmd_hca_cap, out, uar_sz);
336 gen->min_log_pg_sz = MLX5_GET_PR(cmd_hca_cap, out, log_pg_sz);
337 gen->bf_reg_size = MLX5_GET_PR(cmd_hca_cap, out, bf);
338 gen->bf_reg_size = 1 << MLX5_GET_PR(cmd_hca_cap, out, log_bf_reg_size);
339 gen->max_sq_desc_sz = MLX5_GET_PR(cmd_hca_cap, out, max_wqe_sz_sq);
340 gen->max_rq_desc_sz = MLX5_GET_PR(cmd_hca_cap, out, max_wqe_sz_rq);
341 gen->max_dc_sq_desc_sz = MLX5_GET_PR(cmd_hca_cap, out, max_wqe_sz_sq_dc);
342 gen->max_qp_mcg = MLX5_GET_PR(cmd_hca_cap, out, max_qp_mcg);
343 gen->log_max_pd = MLX5_GET_PR(cmd_hca_cap, out, log_max_pd);
344 gen->log_max_xrcd = MLX5_GET_PR(cmd_hca_cap, out, log_max_xrcd);
345 gen->log_uar_page_sz = MLX5_GET_PR(cmd_hca_cap, out, log_uar_page_sz);
346 }
347
caps_opmod_str(u16 opmod)348 static const char *caps_opmod_str(u16 opmod)
349 {
350 switch (opmod) {
351 case HCA_CAP_OPMOD_GET_MAX:
352 return "GET_MAX";
353 case HCA_CAP_OPMOD_GET_CUR:
354 return "GET_CUR";
355 default:
356 return "Invalid";
357 }
358 }
359
mlx5_core_get_caps(struct mlx5_core_dev * dev,struct mlx5_caps * caps,u16 opmod)360 int mlx5_core_get_caps(struct mlx5_core_dev *dev, struct mlx5_caps *caps,
361 u16 opmod)
362 {
363 u8 in[MLX5_ST_SZ_BYTES(query_hca_cap_in)];
364 int out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
365 void *out;
366 int err;
367
368 memset(in, 0, sizeof(in));
369 out = kzalloc(out_sz, GFP_KERNEL);
370 if (!out)
371 return -ENOMEM;
372 MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP);
373 MLX5_SET(query_hca_cap_in, in, op_mod, opmod);
374 err = mlx5_cmd_exec(dev, in, sizeof(in), out, out_sz);
375 if (err)
376 goto query_ex;
377
378 err = mlx5_cmd_status_to_err_v2(out);
379 if (err) {
380 mlx5_core_warn(dev, "query max hca cap failed, %d\n", err);
381 goto query_ex;
382 }
383 mlx5_core_dbg(dev, "%s\n", caps_opmod_str(opmod));
384 fw2drv_caps(caps, MLX5_ADDR_OF(query_hca_cap_out, out, capability_struct));
385
386 query_ex:
387 kfree(out);
388 return err;
389 }
390
set_caps(struct mlx5_core_dev * dev,void * in,int in_sz)391 static int set_caps(struct mlx5_core_dev *dev, void *in, int in_sz)
392 {
393 u32 out[MLX5_ST_SZ_DW(set_hca_cap_out)];
394 int err;
395
396 memset(out, 0, sizeof(out));
397
398 MLX5_SET(set_hca_cap_in, in, opcode, MLX5_CMD_OP_SET_HCA_CAP);
399 err = mlx5_cmd_exec(dev, in, in_sz, out, sizeof(out));
400 if (err)
401 return err;
402
403 err = mlx5_cmd_status_to_err_v2(out);
404
405 return err;
406 }
407
handle_hca_cap(struct mlx5_core_dev * dev)408 static int handle_hca_cap(struct mlx5_core_dev *dev)
409 {
410 void *set_ctx = NULL;
411 struct mlx5_profile *prof = dev->profile;
412 struct mlx5_caps *cur_caps = NULL;
413 struct mlx5_caps *max_caps = NULL;
414 int err = -ENOMEM;
415 int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in);
416
417 set_ctx = kzalloc(set_sz, GFP_KERNEL);
418 if (!set_ctx)
419 goto query_ex;
420
421 max_caps = kzalloc(sizeof(*max_caps), GFP_KERNEL);
422 if (!max_caps)
423 goto query_ex;
424
425 cur_caps = kzalloc(sizeof(*cur_caps), GFP_KERNEL);
426 if (!cur_caps)
427 goto query_ex;
428
429 err = mlx5_core_get_caps(dev, max_caps, HCA_CAP_OPMOD_GET_MAX);
430 if (err)
431 goto query_ex;
432
433 err = mlx5_core_get_caps(dev, cur_caps, HCA_CAP_OPMOD_GET_CUR);
434 if (err)
435 goto query_ex;
436
437 /* we limit the size of the pkey table to 128 entries for now */
438 cur_caps->gen.pkey_table_size = 128;
439
440 if (prof->mask & MLX5_PROF_MASK_QP_SIZE)
441 cur_caps->gen.log_max_qp = prof->log_max_qp;
442
443 /* disable checksum */
444 cur_caps->gen.flags &= ~MLX5_DEV_CAP_FLAG_CMDIF_CSUM;
445
446 copy_rw_fields(MLX5_ADDR_OF(set_hca_cap_in, set_ctx, hca_capability_struct),
447 cur_caps);
448 err = set_caps(dev, set_ctx, set_sz);
449
450 query_ex:
451 kfree(cur_caps);
452 kfree(max_caps);
453 kfree(set_ctx);
454
455 return err;
456 }
457
set_hca_ctrl(struct mlx5_core_dev * dev)458 static int set_hca_ctrl(struct mlx5_core_dev *dev)
459 {
460 struct mlx5_reg_host_endianess he_in;
461 struct mlx5_reg_host_endianess he_out;
462 int err;
463
464 memset(&he_in, 0, sizeof(he_in));
465 he_in.he = MLX5_SET_HOST_ENDIANNESS;
466 err = mlx5_core_access_reg(dev, &he_in, sizeof(he_in),
467 &he_out, sizeof(he_out),
468 MLX5_REG_HOST_ENDIANNESS, 0, 1);
469 return err;
470 }
471
mlx5_core_enable_hca(struct mlx5_core_dev * dev)472 static int mlx5_core_enable_hca(struct mlx5_core_dev *dev)
473 {
474 int err;
475 struct mlx5_enable_hca_mbox_in in;
476 struct mlx5_enable_hca_mbox_out out;
477
478 memset(&in, 0, sizeof(in));
479 memset(&out, 0, sizeof(out));
480 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ENABLE_HCA);
481 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
482 if (err)
483 return err;
484
485 if (out.hdr.status)
486 return mlx5_cmd_status_to_err(&out.hdr);
487
488 return 0;
489 }
490
mlx5_core_disable_hca(struct mlx5_core_dev * dev)491 static int mlx5_core_disable_hca(struct mlx5_core_dev *dev)
492 {
493 int err;
494 struct mlx5_disable_hca_mbox_in in;
495 struct mlx5_disable_hca_mbox_out out;
496
497 memset(&in, 0, sizeof(in));
498 memset(&out, 0, sizeof(out));
499 in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DISABLE_HCA);
500 err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
501 if (err)
502 return err;
503
504 if (out.hdr.status)
505 return mlx5_cmd_status_to_err(&out.hdr);
506
507 return 0;
508 }
509
mlx5_dev_init(struct mlx5_core_dev * dev,struct pci_dev * pdev)510 static int mlx5_dev_init(struct mlx5_core_dev *dev, struct pci_dev *pdev)
511 {
512 struct mlx5_priv *priv = &dev->priv;
513 int err;
514
515 dev->pdev = pdev;
516 pci_set_drvdata(dev->pdev, dev);
517 strncpy(priv->name, dev_name(&pdev->dev), MLX5_MAX_NAME_LEN);
518 priv->name[MLX5_MAX_NAME_LEN - 1] = 0;
519
520 mutex_init(&priv->pgdir_mutex);
521 INIT_LIST_HEAD(&priv->pgdir_list);
522 spin_lock_init(&priv->mkey_lock);
523
524 priv->dbg_root = debugfs_create_dir(dev_name(&pdev->dev), mlx5_debugfs_root);
525 if (!priv->dbg_root)
526 return -ENOMEM;
527
528 err = pci_enable_device(pdev);
529 if (err) {
530 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
531 goto err_dbg;
532 }
533
534 err = request_bar(pdev);
535 if (err) {
536 dev_err(&pdev->dev, "error requesting BARs, aborting\n");
537 goto err_disable;
538 }
539
540 pci_set_master(pdev);
541
542 err = set_dma_caps(pdev);
543 if (err) {
544 dev_err(&pdev->dev, "Failed setting DMA capabilities mask, aborting\n");
545 goto err_clr_master;
546 }
547
548 dev->iseg_base = pci_resource_start(dev->pdev, 0);
549 dev->iseg = ioremap(dev->iseg_base, sizeof(*dev->iseg));
550 if (!dev->iseg) {
551 err = -ENOMEM;
552 dev_err(&pdev->dev, "Failed mapping initialization segment, aborting\n");
553 goto err_clr_master;
554 }
555 dev_info(&pdev->dev, "firmware version: %d.%d.%d\n", fw_rev_maj(dev),
556 fw_rev_min(dev), fw_rev_sub(dev));
557
558 err = mlx5_cmd_init(dev);
559 if (err) {
560 dev_err(&pdev->dev, "Failed initializing command interface, aborting\n");
561 goto err_unmap;
562 }
563
564 mlx5_pagealloc_init(dev);
565
566 err = mlx5_core_enable_hca(dev);
567 if (err) {
568 dev_err(&pdev->dev, "enable hca failed\n");
569 goto err_pagealloc_cleanup;
570 }
571
572 err = mlx5_satisfy_startup_pages(dev, 1);
573 if (err) {
574 dev_err(&pdev->dev, "failed to allocate boot pages\n");
575 goto err_disable_hca;
576 }
577
578 err = set_hca_ctrl(dev);
579 if (err) {
580 dev_err(&pdev->dev, "set_hca_ctrl failed\n");
581 goto reclaim_boot_pages;
582 }
583
584 err = handle_hca_cap(dev);
585 if (err) {
586 dev_err(&pdev->dev, "handle_hca_cap failed\n");
587 goto reclaim_boot_pages;
588 }
589
590 err = mlx5_satisfy_startup_pages(dev, 0);
591 if (err) {
592 dev_err(&pdev->dev, "failed to allocate init pages\n");
593 goto reclaim_boot_pages;
594 }
595
596 err = mlx5_pagealloc_start(dev);
597 if (err) {
598 dev_err(&pdev->dev, "mlx5_pagealloc_start failed\n");
599 goto reclaim_boot_pages;
600 }
601
602 err = mlx5_cmd_init_hca(dev);
603 if (err) {
604 dev_err(&pdev->dev, "init hca failed\n");
605 goto err_pagealloc_stop;
606 }
607
608 mlx5_start_health_poll(dev);
609
610 err = mlx5_cmd_query_hca_cap(dev, &dev->caps);
611 if (err) {
612 dev_err(&pdev->dev, "query hca failed\n");
613 goto err_stop_poll;
614 }
615
616 err = mlx5_cmd_query_adapter(dev);
617 if (err) {
618 dev_err(&pdev->dev, "query adapter failed\n");
619 goto err_stop_poll;
620 }
621
622 err = mlx5_enable_msix(dev);
623 if (err) {
624 dev_err(&pdev->dev, "enable msix failed\n");
625 goto err_stop_poll;
626 }
627
628 err = mlx5_eq_init(dev);
629 if (err) {
630 dev_err(&pdev->dev, "failed to initialize eq\n");
631 goto disable_msix;
632 }
633
634 err = mlx5_alloc_uuars(dev, &priv->uuari);
635 if (err) {
636 dev_err(&pdev->dev, "Failed allocating uar, aborting\n");
637 goto err_eq_cleanup;
638 }
639
640 err = mlx5_start_eqs(dev);
641 if (err) {
642 dev_err(&pdev->dev, "Failed to start pages and async EQs\n");
643 goto err_free_uar;
644 }
645
646 MLX5_INIT_DOORBELL_LOCK(&priv->cq_uar_lock);
647
648 mlx5_init_cq_table(dev);
649 mlx5_init_qp_table(dev);
650 mlx5_init_srq_table(dev);
651 mlx5_init_mr_table(dev);
652
653 return 0;
654
655 err_free_uar:
656 mlx5_free_uuars(dev, &priv->uuari);
657
658 err_eq_cleanup:
659 mlx5_eq_cleanup(dev);
660
661 disable_msix:
662 mlx5_disable_msix(dev);
663
664 err_stop_poll:
665 mlx5_stop_health_poll(dev);
666 if (mlx5_cmd_teardown_hca(dev)) {
667 dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n");
668 return err;
669 }
670
671 err_pagealloc_stop:
672 mlx5_pagealloc_stop(dev);
673
674 reclaim_boot_pages:
675 mlx5_reclaim_startup_pages(dev);
676
677 err_disable_hca:
678 mlx5_core_disable_hca(dev);
679
680 err_pagealloc_cleanup:
681 mlx5_pagealloc_cleanup(dev);
682 mlx5_cmd_cleanup(dev);
683
684 err_unmap:
685 iounmap(dev->iseg);
686
687 err_clr_master:
688 pci_clear_master(dev->pdev);
689 release_bar(dev->pdev);
690
691 err_disable:
692 pci_disable_device(dev->pdev);
693
694 err_dbg:
695 debugfs_remove(priv->dbg_root);
696 return err;
697 }
698 EXPORT_SYMBOL(mlx5_dev_init);
699
mlx5_dev_cleanup(struct mlx5_core_dev * dev)700 static void mlx5_dev_cleanup(struct mlx5_core_dev *dev)
701 {
702 struct mlx5_priv *priv = &dev->priv;
703
704 mlx5_cleanup_srq_table(dev);
705 mlx5_cleanup_qp_table(dev);
706 mlx5_cleanup_cq_table(dev);
707 mlx5_stop_eqs(dev);
708 mlx5_free_uuars(dev, &priv->uuari);
709 mlx5_eq_cleanup(dev);
710 mlx5_disable_msix(dev);
711 mlx5_stop_health_poll(dev);
712 if (mlx5_cmd_teardown_hca(dev)) {
713 dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n");
714 return;
715 }
716 mlx5_pagealloc_stop(dev);
717 mlx5_reclaim_startup_pages(dev);
718 mlx5_core_disable_hca(dev);
719 mlx5_pagealloc_cleanup(dev);
720 mlx5_cmd_cleanup(dev);
721 iounmap(dev->iseg);
722 pci_clear_master(dev->pdev);
723 release_bar(dev->pdev);
724 pci_disable_device(dev->pdev);
725 debugfs_remove(priv->dbg_root);
726 }
727
mlx5_add_device(struct mlx5_interface * intf,struct mlx5_priv * priv)728 static void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv)
729 {
730 struct mlx5_device_context *dev_ctx;
731 struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv);
732
733 dev_ctx = kmalloc(sizeof(*dev_ctx), GFP_KERNEL);
734 if (!dev_ctx) {
735 pr_warn("mlx5_add_device: alloc context failed\n");
736 return;
737 }
738
739 dev_ctx->intf = intf;
740 dev_ctx->context = intf->add(dev);
741
742 if (dev_ctx->context) {
743 spin_lock_irq(&priv->ctx_lock);
744 list_add_tail(&dev_ctx->list, &priv->ctx_list);
745 spin_unlock_irq(&priv->ctx_lock);
746 } else {
747 kfree(dev_ctx);
748 }
749 }
750
mlx5_remove_device(struct mlx5_interface * intf,struct mlx5_priv * priv)751 static void mlx5_remove_device(struct mlx5_interface *intf, struct mlx5_priv *priv)
752 {
753 struct mlx5_device_context *dev_ctx;
754 struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv);
755
756 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
757 if (dev_ctx->intf == intf) {
758 spin_lock_irq(&priv->ctx_lock);
759 list_del(&dev_ctx->list);
760 spin_unlock_irq(&priv->ctx_lock);
761
762 intf->remove(dev, dev_ctx->context);
763 kfree(dev_ctx);
764 return;
765 }
766 }
mlx5_register_device(struct mlx5_core_dev * dev)767 static int mlx5_register_device(struct mlx5_core_dev *dev)
768 {
769 struct mlx5_priv *priv = &dev->priv;
770 struct mlx5_interface *intf;
771
772 mutex_lock(&intf_mutex);
773 list_add_tail(&priv->dev_list, &dev_list);
774 list_for_each_entry(intf, &intf_list, list)
775 mlx5_add_device(intf, priv);
776 mutex_unlock(&intf_mutex);
777
778 return 0;
779 }
mlx5_unregister_device(struct mlx5_core_dev * dev)780 static void mlx5_unregister_device(struct mlx5_core_dev *dev)
781 {
782 struct mlx5_priv *priv = &dev->priv;
783 struct mlx5_interface *intf;
784
785 mutex_lock(&intf_mutex);
786 list_for_each_entry(intf, &intf_list, list)
787 mlx5_remove_device(intf, priv);
788 list_del(&priv->dev_list);
789 mutex_unlock(&intf_mutex);
790 }
791
mlx5_register_interface(struct mlx5_interface * intf)792 int mlx5_register_interface(struct mlx5_interface *intf)
793 {
794 struct mlx5_priv *priv;
795
796 if (!intf->add || !intf->remove)
797 return -EINVAL;
798
799 mutex_lock(&intf_mutex);
800 list_add_tail(&intf->list, &intf_list);
801 list_for_each_entry(priv, &dev_list, dev_list)
802 mlx5_add_device(intf, priv);
803 mutex_unlock(&intf_mutex);
804
805 return 0;
806 }
807 EXPORT_SYMBOL(mlx5_register_interface);
808
mlx5_unregister_interface(struct mlx5_interface * intf)809 void mlx5_unregister_interface(struct mlx5_interface *intf)
810 {
811 struct mlx5_priv *priv;
812
813 mutex_lock(&intf_mutex);
814 list_for_each_entry(priv, &dev_list, dev_list)
815 mlx5_remove_device(intf, priv);
816 list_del(&intf->list);
817 mutex_unlock(&intf_mutex);
818 }
819 EXPORT_SYMBOL(mlx5_unregister_interface);
820
mlx5_core_event(struct mlx5_core_dev * dev,enum mlx5_dev_event event,unsigned long param)821 static void mlx5_core_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event,
822 unsigned long param)
823 {
824 struct mlx5_priv *priv = &dev->priv;
825 struct mlx5_device_context *dev_ctx;
826 unsigned long flags;
827
828 spin_lock_irqsave(&priv->ctx_lock, flags);
829
830 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
831 if (dev_ctx->intf->event)
832 dev_ctx->intf->event(dev, dev_ctx->context, event, param);
833
834 spin_unlock_irqrestore(&priv->ctx_lock, flags);
835 }
836
837 struct mlx5_core_event_handler {
838 void (*event)(struct mlx5_core_dev *dev,
839 enum mlx5_dev_event event,
840 void *data);
841 };
842
init_one(struct pci_dev * pdev,const struct pci_device_id * id)843 static int init_one(struct pci_dev *pdev,
844 const struct pci_device_id *id)
845 {
846 struct mlx5_core_dev *dev;
847 struct mlx5_priv *priv;
848 int err;
849
850 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
851 if (!dev) {
852 dev_err(&pdev->dev, "kzalloc failed\n");
853 return -ENOMEM;
854 }
855 priv = &dev->priv;
856
857 pci_set_drvdata(pdev, dev);
858
859 if (prof_sel < 0 || prof_sel >= ARRAY_SIZE(profile)) {
860 pr_warn("selected profile out of range, selecting default (%d)\n",
861 MLX5_DEFAULT_PROF);
862 prof_sel = MLX5_DEFAULT_PROF;
863 }
864 dev->profile = &profile[prof_sel];
865 dev->event = mlx5_core_event;
866
867 INIT_LIST_HEAD(&priv->ctx_list);
868 spin_lock_init(&priv->ctx_lock);
869 err = mlx5_dev_init(dev, pdev);
870 if (err) {
871 dev_err(&pdev->dev, "mlx5_dev_init failed %d\n", err);
872 goto out;
873 }
874
875 err = mlx5_register_device(dev);
876 if (err) {
877 dev_err(&pdev->dev, "mlx5_register_device failed %d\n", err);
878 goto out_init;
879 }
880
881 return 0;
882
883 out_init:
884 mlx5_dev_cleanup(dev);
885 out:
886 kfree(dev);
887 return err;
888 }
remove_one(struct pci_dev * pdev)889 static void remove_one(struct pci_dev *pdev)
890 {
891 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
892
893 mlx5_unregister_device(dev);
894 mlx5_dev_cleanup(dev);
895 kfree(dev);
896 }
897
898 static const struct pci_device_id mlx5_core_pci_table[] = {
899 { PCI_VDEVICE(MELLANOX, 4113) }, /* MT4113 Connect-IB */
900 { PCI_VDEVICE(MELLANOX, 4115) }, /* ConnectX-4 */
901 { 0, }
902 };
903
904 MODULE_DEVICE_TABLE(pci, mlx5_core_pci_table);
905
906 static struct pci_driver mlx5_core_driver = {
907 .name = DRIVER_NAME,
908 .id_table = mlx5_core_pci_table,
909 .probe = init_one,
910 .remove = remove_one
911 };
912
init(void)913 static int __init init(void)
914 {
915 int err;
916
917 mlx5_register_debugfs();
918 mlx5_core_wq = create_singlethread_workqueue("mlx5_core_wq");
919 if (!mlx5_core_wq) {
920 err = -ENOMEM;
921 goto err_debug;
922 }
923 mlx5_health_init();
924
925 err = pci_register_driver(&mlx5_core_driver);
926 if (err)
927 goto err_health;
928
929 return 0;
930
931 err_health:
932 mlx5_health_cleanup();
933 destroy_workqueue(mlx5_core_wq);
934 err_debug:
935 mlx5_unregister_debugfs();
936 return err;
937 }
938
cleanup(void)939 static void __exit cleanup(void)
940 {
941 pci_unregister_driver(&mlx5_core_driver);
942 mlx5_health_cleanup();
943 destroy_workqueue(mlx5_core_wq);
944 mlx5_unregister_debugfs();
945 }
946
947 module_init(init);
948 module_exit(cleanup);
949