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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / drivers / net / mlx4 / main.c
blob08bfc130a33eb7d63dac009d338e4464a34b4499
1 /*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
5 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36 #include <linux/module.h>
37 #include <linux/init.h>
38 #include <linux/errno.h>
39 #include <linux/pci.h>
40 #include <linux/dma-mapping.h>
41
42 #include <linux/mlx4/device.h>
43 #include <linux/mlx4/doorbell.h>
44
45 #include "mlx4.h"
46 #include "fw.h"
47 #include "icm.h"
48
49 MODULE_AUTHOR("Roland Dreier");
50 MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver");
51 MODULE_LICENSE("Dual BSD/GPL");
52 MODULE_VERSION(DRV_VERSION);
53
54 #ifdef CONFIG_MLX4_DEBUG
55
56 int mlx4_debug_level = 0;
57 module_param_named(debug_level, mlx4_debug_level, int, 0644);
58 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
59
60 #endif /* CONFIG_MLX4_DEBUG */
61
62 #ifdef CONFIG_PCI_MSI
63
64 static int msi_x = 1;
65 module_param(msi_x, int, 0444);
66 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
67
68 #else /* CONFIG_PCI_MSI */
69
70 #define msi_x (0)
71
72 #endif /* CONFIG_PCI_MSI */
73
74 static char mlx4_version[] __devinitdata =
75 DRV_NAME ": Mellanox ConnectX core driver v"
76 DRV_VERSION " (" DRV_RELDATE ")\n";
77
78 static struct mlx4_profile default_profile = {
79 .num_qp = 1 << 16,
80 .num_srq = 1 << 16,
81 .rdmarc_per_qp = 1 << 4,
82 .num_cq = 1 << 16,
83 .num_mcg = 1 << 13,
84 .num_mpt = 1 << 17,
85 .num_mtt = 1 << 20,
86 };
87
88 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
89 {
90 int err;
91 int i;
92
93 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
94 if (err) {
95 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
96 return err;
97 }
98
99 if (dev_cap->min_page_sz > PAGE_SIZE) {
100 mlx4_err(dev, "HCA minimum page size of %d bigger than "
101 "kernel PAGE_SIZE of %ld, aborting.\n",
102 dev_cap->min_page_sz, PAGE_SIZE);
103 return -ENODEV;
104 }
105 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
106 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
107 "aborting.\n",
108 dev_cap->num_ports, MLX4_MAX_PORTS);
109 return -ENODEV;
110 }
111
112 if (dev_cap->uar_size > pci_resource_len(dev->pdev, 2)) {
113 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than "
114 "PCI resource 2 size of 0x%llx, aborting.\n",
115 dev_cap->uar_size,
116 (unsigned long long) pci_resource_len(dev->pdev, 2));
117 return -ENODEV;
118 }
119
120 dev->caps.num_ports = dev_cap->num_ports;
121 for (i = 1; i <= dev->caps.num_ports; ++i) {
122 dev->caps.vl_cap[i] = dev_cap->max_vl[i];
123 dev->caps.mtu_cap[i] = dev_cap->max_mtu[i];
124 dev->caps.gid_table_len[i] = dev_cap->max_gids[i];
125 dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
126 dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
127 }
128
129 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
130 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
131 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
132 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
133 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
134 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
135 dev->caps.max_wqes = dev_cap->max_qp_sz;
136 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
137 dev->caps.reserved_qps = dev_cap->reserved_qps;
138 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
139 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
140 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
141 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
142 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
143 dev->caps.num_qp_per_mgm = MLX4_QP_PER_MGM;
144 /*
145 * Subtract 1 from the limit because we need to allocate a
146 * spare CQE so the HCA HW can tell the difference between an
147 * empty CQ and a full CQ.
148 */
149 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
150 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
151 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
152 dev->caps.reserved_mtts = DIV_ROUND_UP(dev_cap->reserved_mtts,
153 MLX4_MTT_ENTRY_PER_SEG);
154 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
155 dev->caps.reserved_uars = dev_cap->reserved_uars;
156 dev->caps.reserved_pds = dev_cap->reserved_pds;
157 dev->caps.mtt_entry_sz = MLX4_MTT_ENTRY_PER_SEG * dev_cap->mtt_entry_sz;
158 dev->caps.max_msg_sz = dev_cap->max_msg_sz;
159 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
160 dev->caps.flags = dev_cap->flags;
161 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
162
163 return 0;
164 }
165
166 static int mlx4_load_fw(struct mlx4_dev *dev)
167 {
168 struct mlx4_priv *priv = mlx4_priv(dev);
169 int err;
170
171 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
172 GFP_HIGHUSER | __GFP_NOWARN, 0);
173 if (!priv->fw.fw_icm) {
174 mlx4_err(dev, "Couldn't allocate FW area, aborting.\n");
175 return -ENOMEM;
176 }
177
178 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
179 if (err) {
180 mlx4_err(dev, "MAP_FA command failed, aborting.\n");
181 goto err_free;
182 }
183
184 err = mlx4_RUN_FW(dev);
185 if (err) {
186 mlx4_err(dev, "RUN_FW command failed, aborting.\n");
187 goto err_unmap_fa;
188 }
189
190 return 0;
191
192 err_unmap_fa:
193 mlx4_UNMAP_FA(dev);
194
195 err_free:
196 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
197 return err;
198 }
199
200 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
201 int cmpt_entry_sz)
202 {
203 struct mlx4_priv *priv = mlx4_priv(dev);
204 int err;
205
206 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
207 cmpt_base +
208 ((u64) (MLX4_CMPT_TYPE_QP *
209 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
210 cmpt_entry_sz, dev->caps.num_qps,
211 dev->caps.reserved_qps, 0, 0);
212 if (err)
213 goto err;
214
215 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
216 cmpt_base +
217 ((u64) (MLX4_CMPT_TYPE_SRQ *
218 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
219 cmpt_entry_sz, dev->caps.num_srqs,
220 dev->caps.reserved_srqs, 0, 0);
221 if (err)
222 goto err_qp;
223
224 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
225 cmpt_base +
226 ((u64) (MLX4_CMPT_TYPE_CQ *
227 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
228 cmpt_entry_sz, dev->caps.num_cqs,
229 dev->caps.reserved_cqs, 0, 0);
230 if (err)
231 goto err_srq;
232
233 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
234 cmpt_base +
235 ((u64) (MLX4_CMPT_TYPE_EQ *
236 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
237 cmpt_entry_sz,
238 roundup_pow_of_two(MLX4_NUM_EQ +
239 dev->caps.reserved_eqs),
240 MLX4_NUM_EQ + dev->caps.reserved_eqs, 0, 0);
241 if (err)
242 goto err_cq;
243
244 return 0;
245
246 err_cq:
247 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
248
249 err_srq:
250 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
251
252 err_qp:
253 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
254
255 err:
256 return err;
257 }
258
259 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
260 struct mlx4_init_hca_param *init_hca, u64 icm_size)
261 {
262 struct mlx4_priv *priv = mlx4_priv(dev);
263 u64 aux_pages;
264 int err;
265
266 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
267 if (err) {
268 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting.\n");
269 return err;
270 }
271
272 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory.\n",
273 (unsigned long long) icm_size >> 10,
274 (unsigned long long) aux_pages << 2);
275
276 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
277 GFP_HIGHUSER | __GFP_NOWARN, 0);
278 if (!priv->fw.aux_icm) {
279 mlx4_err(dev, "Couldn't allocate aux memory, aborting.\n");
280 return -ENOMEM;
281 }
282
283 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
284 if (err) {
285 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting.\n");
286 goto err_free_aux;
287 }
288
289 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
290 if (err) {
291 mlx4_err(dev, "Failed to map cMPT context memory, aborting.\n");
292 goto err_unmap_aux;
293 }
294
295 err = mlx4_map_eq_icm(dev, init_hca->eqc_base);
296 if (err) {
297 mlx4_err(dev, "Failed to map EQ context memory, aborting.\n");
298 goto err_unmap_cmpt;
299 }
300
301 /*
302 * Reserved MTT entries must be aligned up to a cacheline
303 * boundary, since the FW will write to them, while the driver
304 * writes to all other MTT entries. (The variable
305 * dev->caps.mtt_entry_sz below is really the MTT segment
306 * size, not the raw entry size)
307 */
308 dev->caps.reserved_mtts =
309 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
310 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
311
312 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
313 init_hca->mtt_base,
314 dev->caps.mtt_entry_sz,
315 dev->caps.num_mtt_segs,
316 dev->caps.reserved_mtts, 1, 0);
317 if (err) {
318 mlx4_err(dev, "Failed to map MTT context memory, aborting.\n");
319 goto err_unmap_eq;
320 }
321
322 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
323 init_hca->dmpt_base,
324 dev_cap->dmpt_entry_sz,
325 dev->caps.num_mpts,
326 dev->caps.reserved_mrws, 1, 1);
327 if (err) {
328 mlx4_err(dev, "Failed to map dMPT context memory, aborting.\n");
329 goto err_unmap_mtt;
330 }
331
332 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
333 init_hca->qpc_base,
334 dev_cap->qpc_entry_sz,
335 dev->caps.num_qps,
336 dev->caps.reserved_qps, 0, 0);
337 if (err) {
338 mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
339 goto err_unmap_dmpt;
340 }
341
342 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
343 init_hca->auxc_base,
344 dev_cap->aux_entry_sz,
345 dev->caps.num_qps,
346 dev->caps.reserved_qps, 0, 0);
347 if (err) {
348 mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
349 goto err_unmap_qp;
350 }
351
352 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
353 init_hca->altc_base,
354 dev_cap->altc_entry_sz,
355 dev->caps.num_qps,
356 dev->caps.reserved_qps, 0, 0);
357 if (err) {
358 mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
359 goto err_unmap_auxc;
360 }
361
362 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
363 init_hca->rdmarc_base,
364 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
365 dev->caps.num_qps,
366 dev->caps.reserved_qps, 0, 0);
367 if (err) {
368 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
369 goto err_unmap_altc;
370 }
371
372 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
373 init_hca->cqc_base,
374 dev_cap->cqc_entry_sz,
375 dev->caps.num_cqs,
376 dev->caps.reserved_cqs, 0, 0);
377 if (err) {
378 mlx4_err(dev, "Failed to map CQ context memory, aborting.\n");
379 goto err_unmap_rdmarc;
380 }
381
382 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
383 init_hca->srqc_base,
384 dev_cap->srq_entry_sz,
385 dev->caps.num_srqs,
386 dev->caps.reserved_srqs, 0, 0);
387 if (err) {
388 mlx4_err(dev, "Failed to map SRQ context memory, aborting.\n");
389 goto err_unmap_cq;
390 }
391
392 /*
393 * It's not strictly required, but for simplicity just map the
394 * whole multicast group table now. The table isn't very big
395 * and it's a lot easier than trying to track ref counts.
396 */
397 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
398 init_hca->mc_base, MLX4_MGM_ENTRY_SIZE,
399 dev->caps.num_mgms + dev->caps.num_amgms,
400 dev->caps.num_mgms + dev->caps.num_amgms,
401 0, 0);
402 if (err) {
403 mlx4_err(dev, "Failed to map MCG context memory, aborting.\n");
404 goto err_unmap_srq;
405 }
406
407 return 0;
408
409 err_unmap_srq:
410 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
411
412 err_unmap_cq:
413 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
414
415 err_unmap_rdmarc:
416 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
417
418 err_unmap_altc:
419 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
420
421 err_unmap_auxc:
422 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
423
424 err_unmap_qp:
425 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
426
427 err_unmap_dmpt:
428 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
429
430 err_unmap_mtt:
431 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
432
433 err_unmap_eq:
434 mlx4_unmap_eq_icm(dev);
435
436 err_unmap_cmpt:
437 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
438 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
439 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
440 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
441
442 err_unmap_aux:
443 mlx4_UNMAP_ICM_AUX(dev);
444
445 err_free_aux:
446 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
447
448 return err;
449 }
450
451 static void mlx4_free_icms(struct mlx4_dev *dev)
452 {
453 struct mlx4_priv *priv = mlx4_priv(dev);
454
455 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
456 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
457 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
458 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
459 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
460 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
461 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
462 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
463 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
464 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
465 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
466 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
467 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
468 mlx4_unmap_eq_icm(dev);
469
470 mlx4_UNMAP_ICM_AUX(dev);
471 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
472 }
473
474 static void mlx4_close_hca(struct mlx4_dev *dev)
475 {
476 mlx4_CLOSE_HCA(dev, 0);
477 mlx4_free_icms(dev);
478 mlx4_UNMAP_FA(dev);
479 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
480 }
481
482 static int mlx4_init_hca(struct mlx4_dev *dev)
483 {
484 struct mlx4_priv *priv = mlx4_priv(dev);
485 struct mlx4_adapter adapter;
486 struct mlx4_dev_cap dev_cap;
487 struct mlx4_profile profile;
488 struct mlx4_init_hca_param init_hca;
489 u64 icm_size;
490 int err;
491
492 err = mlx4_QUERY_FW(dev);
493 if (err) {
494 mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
495 return err;
496 }
497
498 err = mlx4_load_fw(dev);
499 if (err) {
500 mlx4_err(dev, "Failed to start FW, aborting.\n");
501 return err;
502 }
503
504 err = mlx4_dev_cap(dev, &dev_cap);
505 if (err) {
506 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
507 goto err_stop_fw;
508 }
509
510 profile = default_profile;
511
512 icm_size = mlx4_make_profile(dev, &profile, &dev_cap, &init_hca);
513 if ((long long) icm_size < 0) {
514 err = icm_size;
515 goto err_stop_fw;
516 }
517
518 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
519
520 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
521 if (err)
522 goto err_stop_fw;
523
524 err = mlx4_INIT_HCA(dev, &init_hca);
525 if (err) {
526 mlx4_err(dev, "INIT_HCA command failed, aborting.\n");
527 goto err_free_icm;
528 }
529
530 err = mlx4_QUERY_ADAPTER(dev, &adapter);
531 if (err) {
532 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting.\n");
533 goto err_close;
534 }
535
536 priv->eq_table.inta_pin = adapter.inta_pin;
537 memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
538
539 return 0;
540
541 err_close:
542 mlx4_close_hca(dev);
543
544 err_free_icm:
545 mlx4_free_icms(dev);
546
547 err_stop_fw:
548 mlx4_UNMAP_FA(dev);
549 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
550
551 return err;
552 }
553
554 static int mlx4_setup_hca(struct mlx4_dev *dev)
555 {
556 struct mlx4_priv *priv = mlx4_priv(dev);
557 int err;
558
559 err = mlx4_init_uar_table(dev);
560 if (err) {
561 mlx4_err(dev, "Failed to initialize "
562 "user access region table, aborting.\n");
563 return err;
564 }
565
566 err = mlx4_uar_alloc(dev, &priv->driver_uar);
567 if (err) {
568 mlx4_err(dev, "Failed to allocate driver access region, "
569 "aborting.\n");
570 goto err_uar_table_free;
571 }
572
573 priv->kar = ioremap(priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
574 if (!priv->kar) {
575 mlx4_err(dev, "Couldn't map kernel access region, "
576 "aborting.\n");
577 err = -ENOMEM;
578 goto err_uar_free;
579 }
580
581 err = mlx4_init_pd_table(dev);
582 if (err) {
583 mlx4_err(dev, "Failed to initialize "
584 "protection domain table, aborting.\n");
585 goto err_kar_unmap;
586 }
587
588 err = mlx4_init_mr_table(dev);
589 if (err) {
590 mlx4_err(dev, "Failed to initialize "
591 "memory region table, aborting.\n");
592 goto err_pd_table_free;
593 }
594
595 err = mlx4_init_eq_table(dev);
596 if (err) {
597 mlx4_err(dev, "Failed to initialize "
598 "event queue table, aborting.\n");
599 goto err_mr_table_free;
600 }
601
602 err = mlx4_cmd_use_events(dev);
603 if (err) {
604 mlx4_err(dev, "Failed to switch to event-driven "
605 "firmware commands, aborting.\n");
606 goto err_eq_table_free;
607 }
608
609 err = mlx4_NOP(dev);
610 if (err) {
611 if (dev->flags & MLX4_FLAG_MSI_X) {
612 mlx4_warn(dev, "NOP command failed to generate MSI-X "
613 "interrupt IRQ %d).\n",
614 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
615 mlx4_warn(dev, "Trying again without MSI-X.\n");
616 } else {
617 mlx4_err(dev, "NOP command failed to generate interrupt "
618 "(IRQ %d), aborting.\n",
619 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
620 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
621 }
622
623 goto err_cmd_poll;
624 }
625
626 mlx4_dbg(dev, "NOP command IRQ test passed\n");
627
628 err = mlx4_init_cq_table(dev);
629 if (err) {
630 mlx4_err(dev, "Failed to initialize "
631 "completion queue table, aborting.\n");
632 goto err_cmd_poll;
633 }
634
635 err = mlx4_init_srq_table(dev);
636 if (err) {
637 mlx4_err(dev, "Failed to initialize "
638 "shared receive queue table, aborting.\n");
639 goto err_cq_table_free;
640 }
641
642 err = mlx4_init_qp_table(dev);
643 if (err) {
644 mlx4_err(dev, "Failed to initialize "
645 "queue pair table, aborting.\n");
646 goto err_srq_table_free;
647 }
648
649 err = mlx4_init_mcg_table(dev);
650 if (err) {
651 mlx4_err(dev, "Failed to initialize "
652 "multicast group table, aborting.\n");
653 goto err_qp_table_free;
654 }
655
656 return 0;
657
658 err_qp_table_free:
659 mlx4_cleanup_qp_table(dev);
660
661 err_srq_table_free:
662 mlx4_cleanup_srq_table(dev);
663
664 err_cq_table_free:
665 mlx4_cleanup_cq_table(dev);
666
667 err_cmd_poll:
668 mlx4_cmd_use_polling(dev);
669
670 err_eq_table_free:
671 mlx4_cleanup_eq_table(dev);
672
673 err_mr_table_free:
674 mlx4_cleanup_mr_table(dev);
675
676 err_pd_table_free:
677 mlx4_cleanup_pd_table(dev);
678
679 err_kar_unmap:
680 iounmap(priv->kar);
681
682 err_uar_free:
683 mlx4_uar_free(dev, &priv->driver_uar);
684
685 err_uar_table_free:
686 mlx4_cleanup_uar_table(dev);
687 return err;
688 }
689
690 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
691 {
692 struct mlx4_priv *priv = mlx4_priv(dev);
693 struct msix_entry entries[MLX4_NUM_EQ];
694 int err;
695 int i;
696
697 if (msi_x) {
698 for (i = 0; i < MLX4_NUM_EQ; ++i)
699 entries[i].entry = i;
700
701 err = pci_enable_msix(dev->pdev, entries, ARRAY_SIZE(entries));
702 if (err) {
703 if (err > 0)
704 mlx4_info(dev, "Only %d MSI-X vectors available, "
705 "not using MSI-X\n", err);
706 goto no_msi;
707 }
708
709 for (i = 0; i < MLX4_NUM_EQ; ++i)
710 priv->eq_table.eq[i].irq = entries[i].vector;
711
712 dev->flags |= MLX4_FLAG_MSI_X;
713 return;
714 }
715
716 no_msi:
717 for (i = 0; i < MLX4_NUM_EQ; ++i)
718 priv->eq_table.eq[i].irq = dev->pdev->irq;
719 }
720
721 static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
722 {
723 struct mlx4_priv *priv;
724 struct mlx4_dev *dev;
725 int err;
726
727 printk(KERN_INFO PFX "Initializing %s\n",
728 pci_name(pdev));
729
730 err = pci_enable_device(pdev);
731 if (err) {
732 dev_err(&pdev->dev, "Cannot enable PCI device, "
733 "aborting.\n");
734 return err;
735 }
736
737 /*
738 * Check for BARs. We expect 0: 1MB, 2: 8MB, 4: DDR (may not
739 * be present)
740 */
741 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
742 pci_resource_len(pdev, 0) != 1 << 20) {
743 dev_err(&pdev->dev, "Missing DCS, aborting.\n");
744 err = -ENODEV;
745 goto err_disable_pdev;
746 }
747 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
748 dev_err(&pdev->dev, "Missing UAR, aborting.\n");
749 err = -ENODEV;
750 goto err_disable_pdev;
751 }
752
753 err = pci_request_region(pdev, 0, DRV_NAME);
754 if (err) {
755 dev_err(&pdev->dev, "Cannot request control region, aborting.\n");
756 goto err_disable_pdev;
757 }
758
759 err = pci_request_region(pdev, 2, DRV_NAME);
760 if (err) {
761 dev_err(&pdev->dev, "Cannot request UAR region, aborting.\n");
762 goto err_release_bar0;
763 }
764
765 pci_set_master(pdev);
766
767 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
768 if (err) {
769 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
770 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
771 if (err) {
772 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
773 goto err_release_bar2;
774 }
775 }
776 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
777 if (err) {
778 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
779 "consistent PCI DMA mask.\n");
780 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
781 if (err) {
782 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
783 "aborting.\n");
784 goto err_release_bar2;
785 }
786 }
787
788 priv = kzalloc(sizeof *priv, GFP_KERNEL);
789 if (!priv) {
790 dev_err(&pdev->dev, "Device struct alloc failed, "
791 "aborting.\n");
792 err = -ENOMEM;
793 goto err_release_bar2;
794 }
795
796 dev = &priv->dev;
797 dev->pdev = pdev;
798 INIT_LIST_HEAD(&priv->ctx_list);
799 spin_lock_init(&priv->ctx_lock);
800
801 /*
802 * Now reset the HCA before we touch the PCI capabilities or
803 * attempt a firmware command, since a boot ROM may have left
804 * the HCA in an undefined state.
805 */
806 err = mlx4_reset(dev);
807 if (err) {
808 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
809 goto err_free_dev;
810 }
811
812 if (mlx4_cmd_init(dev)) {
813 mlx4_err(dev, "Failed to init command interface, aborting.\n");
814 goto err_free_dev;
815 }
816
817 err = mlx4_init_hca(dev);
818 if (err)
819 goto err_cmd;
820
821 mlx4_enable_msi_x(dev);
822
823 err = mlx4_setup_hca(dev);
824 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X)) {
825 dev->flags &= ~MLX4_FLAG_MSI_X;
826 pci_disable_msix(pdev);
827 err = mlx4_setup_hca(dev);
828 }
829
830 if (err)
831 goto err_close;
832
833 err = mlx4_register_device(dev);
834 if (err)
835 goto err_cleanup;
836
837 pci_set_drvdata(pdev, dev);
838
839 return 0;
840
841 err_cleanup:
842 mlx4_cleanup_mcg_table(dev);
843 mlx4_cleanup_qp_table(dev);
844 mlx4_cleanup_srq_table(dev);
845 mlx4_cleanup_cq_table(dev);
846 mlx4_cmd_use_polling(dev);
847 mlx4_cleanup_eq_table(dev);
848 mlx4_cleanup_mr_table(dev);
849 mlx4_cleanup_pd_table(dev);
850 mlx4_cleanup_uar_table(dev);
851
852 err_close:
853 if (dev->flags & MLX4_FLAG_MSI_X)
854 pci_disable_msix(pdev);
855
856 mlx4_close_hca(dev);
857
858 err_cmd:
859 mlx4_cmd_cleanup(dev);
860
861 err_free_dev:
862 kfree(priv);
863
864 err_release_bar2:
865 pci_release_region(pdev, 2);
866
867 err_release_bar0:
868 pci_release_region(pdev, 0);
869
870 err_disable_pdev:
871 pci_disable_device(pdev);
872 pci_set_drvdata(pdev, NULL);
873 return err;
874 }
875
876 static int __devinit mlx4_init_one(struct pci_dev *pdev,
877 const struct pci_device_id *id)
878 {
879 static int mlx4_version_printed;
880
881 if (!mlx4_version_printed) {
882 printk(KERN_INFO "%s", mlx4_version);
883 ++mlx4_version_printed;
884 }
885
886 return __mlx4_init_one(pdev, id);
887 }
888
889 static void mlx4_remove_one(struct pci_dev *pdev)
890 {
891 struct mlx4_dev *dev = pci_get_drvdata(pdev);
892 struct mlx4_priv *priv = mlx4_priv(dev);
893 int p;
894
895 if (dev) {
896 mlx4_unregister_device(dev);
897
898 for (p = 1; p <= dev->caps.num_ports; ++p)
899 mlx4_CLOSE_PORT(dev, p);
900
901 mlx4_cleanup_mcg_table(dev);
902 mlx4_cleanup_qp_table(dev);
903 mlx4_cleanup_srq_table(dev);
904 mlx4_cleanup_cq_table(dev);
905 mlx4_cmd_use_polling(dev);
906 mlx4_cleanup_eq_table(dev);
907 mlx4_cleanup_mr_table(dev);
908 mlx4_cleanup_pd_table(dev);
909
910 iounmap(priv->kar);
911 mlx4_uar_free(dev, &priv->driver_uar);
912 mlx4_cleanup_uar_table(dev);
913 mlx4_close_hca(dev);
914 mlx4_cmd_cleanup(dev);
915
916 if (dev->flags & MLX4_FLAG_MSI_X)
917 pci_disable_msix(pdev);
918
919 kfree(priv);
920 pci_release_region(pdev, 2);
921 pci_release_region(pdev, 0);
922 pci_disable_device(pdev);
923 pci_set_drvdata(pdev, NULL);
924 }
925 }
926
927 int mlx4_restart_one(struct pci_dev *pdev)
928 {
929 mlx4_remove_one(pdev);
930 return __mlx4_init_one(pdev, NULL);
931 }
932
933 static struct pci_device_id mlx4_pci_table[] = {
934 { PCI_VDEVICE(MELLANOX, 0x6340) }, /* MT25408 "Hermon" SDR */
935 { PCI_VDEVICE(MELLANOX, 0x634a) }, /* MT25408 "Hermon" DDR */
936 { PCI_VDEVICE(MELLANOX, 0x6354) }, /* MT25408 "Hermon" QDR */
937 { PCI_VDEVICE(MELLANOX, 0x6732) }, /* MT25408 "Hermon" DDR PCIe gen2 */
938 { PCI_VDEVICE(MELLANOX, 0x673c) }, /* MT25408 "Hermon" QDR PCIe gen2 */
939 { 0, }
940 };
941
942 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
943
944 static struct pci_driver mlx4_driver = {
945 .name = DRV_NAME,
946 .id_table = mlx4_pci_table,
947 .probe = mlx4_init_one,
948 .remove = __devexit_p(mlx4_remove_one)
949 };
950
951 static int __init mlx4_init(void)
952 {
953 int ret;
954
955 ret = mlx4_catas_init();
956 if (ret)
957 return ret;
958
959 ret = pci_register_driver(&mlx4_driver);
960 return ret < 0 ? ret : 0;
961 }
962
963 static void __exit mlx4_cleanup(void)
964 {
965 pci_unregister_driver(&mlx4_driver);
966 mlx4_catas_cleanup();
967 }
968
969 module_init(mlx4_init);
970 module_exit(mlx4_cleanup);
WRT350N Kernel Patches