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mlx4_core: Support multiple pre-reserved QP regions
[deliverable/linux.git] / drivers / net / mlx4 / main.c
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, 2006, 2007, 2008 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 << 17,
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 log_num_mac = 2;
89 module_param_named(log_num_mac, log_num_mac, int, 0444);
90 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
91
92 static int log_num_vlan;
93 module_param_named(log_num_vlan, log_num_vlan, int, 0444);
94 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
95
96 static int use_prio;
97 module_param_named(use_prio, use_prio, bool, 0444);
98 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports "
99 "(0/1, default 0)");
100
101 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
102 {
103 int err;
104 int i;
105
106 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
107 if (err) {
108 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
109 return err;
110 }
111
112 if (dev_cap->min_page_sz > PAGE_SIZE) {
113 mlx4_err(dev, "HCA minimum page size of %d bigger than "
114 "kernel PAGE_SIZE of %ld, aborting.\n",
115 dev_cap->min_page_sz, PAGE_SIZE);
116 return -ENODEV;
117 }
118 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
119 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
120 "aborting.\n",
121 dev_cap->num_ports, MLX4_MAX_PORTS);
122 return -ENODEV;
123 }
124
125 if (dev_cap->uar_size > pci_resource_len(dev->pdev, 2)) {
126 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than "
127 "PCI resource 2 size of 0x%llx, aborting.\n",
128 dev_cap->uar_size,
129 (unsigned long long) pci_resource_len(dev->pdev, 2));
130 return -ENODEV;
131 }
132
133 dev->caps.num_ports = dev_cap->num_ports;
134 for (i = 1; i <= dev->caps.num_ports; ++i) {
135 dev->caps.vl_cap[i] = dev_cap->max_vl[i];
136 dev->caps.mtu_cap[i] = dev_cap->max_mtu[i];
137 dev->caps.gid_table_len[i] = dev_cap->max_gids[i];
138 dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
139 dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
140 }
141
142 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
143 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
144 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
145 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
146 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
147 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
148 dev->caps.max_wqes = dev_cap->max_qp_sz;
149 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
150 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
151 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
152 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
153 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
154 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
155 dev->caps.num_qp_per_mgm = MLX4_QP_PER_MGM;
156 /*
157 * Subtract 1 from the limit because we need to allocate a
158 * spare CQE so the HCA HW can tell the difference between an
159 * empty CQ and a full CQ.
160 */
161 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
162 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
163 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
164 dev->caps.reserved_mtts = DIV_ROUND_UP(dev_cap->reserved_mtts,
165 MLX4_MTT_ENTRY_PER_SEG);
166 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
167 dev->caps.reserved_uars = dev_cap->reserved_uars;
168 dev->caps.reserved_pds = dev_cap->reserved_pds;
169 dev->caps.mtt_entry_sz = MLX4_MTT_ENTRY_PER_SEG * dev_cap->mtt_entry_sz;
170 dev->caps.max_msg_sz = dev_cap->max_msg_sz;
171 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
172 dev->caps.flags = dev_cap->flags;
173 dev->caps.bmme_flags = dev_cap->bmme_flags;
174 dev->caps.reserved_lkey = dev_cap->reserved_lkey;
175 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
176 dev->caps.max_gso_sz = dev_cap->max_gso_sz;
177
178 dev->caps.log_num_macs = log_num_mac;
179 dev->caps.log_num_vlans = log_num_vlan;
180 dev->caps.log_num_prios = use_prio ? 3 : 0;
181
182 for (i = 1; i <= dev->caps.num_ports; ++i) {
183 if (dev->caps.log_num_macs > dev_cap->log_max_macs[i]) {
184 dev->caps.log_num_macs = dev_cap->log_max_macs[i];
185 mlx4_warn(dev, "Requested number of MACs is too much "
186 "for port %d, reducing to %d.\n",
187 i, 1 << dev->caps.log_num_macs);
188 }
189 if (dev->caps.log_num_vlans > dev_cap->log_max_vlans[i]) {
190 dev->caps.log_num_vlans = dev_cap->log_max_vlans[i];
191 mlx4_warn(dev, "Requested number of VLANs is too much "
192 "for port %d, reducing to %d.\n",
193 i, 1 << dev->caps.log_num_vlans);
194 }
195 }
196
197 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
198 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
199 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
200 (1 << dev->caps.log_num_macs) *
201 (1 << dev->caps.log_num_vlans) *
202 (1 << dev->caps.log_num_prios) *
203 dev->caps.num_ports;
204 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
205
206 dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
207 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
208 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
209 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
210
211 return 0;
212 }
213
214 static int mlx4_load_fw(struct mlx4_dev *dev)
215 {
216 struct mlx4_priv *priv = mlx4_priv(dev);
217 int err;
218
219 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
220 GFP_HIGHUSER | __GFP_NOWARN, 0);
221 if (!priv->fw.fw_icm) {
222 mlx4_err(dev, "Couldn't allocate FW area, aborting.\n");
223 return -ENOMEM;
224 }
225
226 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
227 if (err) {
228 mlx4_err(dev, "MAP_FA command failed, aborting.\n");
229 goto err_free;
230 }
231
232 err = mlx4_RUN_FW(dev);
233 if (err) {
234 mlx4_err(dev, "RUN_FW command failed, aborting.\n");
235 goto err_unmap_fa;
236 }
237
238 return 0;
239
240 err_unmap_fa:
241 mlx4_UNMAP_FA(dev);
242
243 err_free:
244 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
245 return err;
246 }
247
248 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
249 int cmpt_entry_sz)
250 {
251 struct mlx4_priv *priv = mlx4_priv(dev);
252 int err;
253
254 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
255 cmpt_base +
256 ((u64) (MLX4_CMPT_TYPE_QP *
257 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
258 cmpt_entry_sz, dev->caps.num_qps,
259 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
260 0, 0);
261 if (err)
262 goto err;
263
264 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
265 cmpt_base +
266 ((u64) (MLX4_CMPT_TYPE_SRQ *
267 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
268 cmpt_entry_sz, dev->caps.num_srqs,
269 dev->caps.reserved_srqs, 0, 0);
270 if (err)
271 goto err_qp;
272
273 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
274 cmpt_base +
275 ((u64) (MLX4_CMPT_TYPE_CQ *
276 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
277 cmpt_entry_sz, dev->caps.num_cqs,
278 dev->caps.reserved_cqs, 0, 0);
279 if (err)
280 goto err_srq;
281
282 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
283 cmpt_base +
284 ((u64) (MLX4_CMPT_TYPE_EQ *
285 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
286 cmpt_entry_sz,
287 roundup_pow_of_two(MLX4_NUM_EQ +
288 dev->caps.reserved_eqs),
289 MLX4_NUM_EQ + dev->caps.reserved_eqs, 0, 0);
290 if (err)
291 goto err_cq;
292
293 return 0;
294
295 err_cq:
296 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
297
298 err_srq:
299 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
300
301 err_qp:
302 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
303
304 err:
305 return err;
306 }
307
308 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
309 struct mlx4_init_hca_param *init_hca, u64 icm_size)
310 {
311 struct mlx4_priv *priv = mlx4_priv(dev);
312 u64 aux_pages;
313 int err;
314
315 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
316 if (err) {
317 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting.\n");
318 return err;
319 }
320
321 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory.\n",
322 (unsigned long long) icm_size >> 10,
323 (unsigned long long) aux_pages << 2);
324
325 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
326 GFP_HIGHUSER | __GFP_NOWARN, 0);
327 if (!priv->fw.aux_icm) {
328 mlx4_err(dev, "Couldn't allocate aux memory, aborting.\n");
329 return -ENOMEM;
330 }
331
332 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
333 if (err) {
334 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting.\n");
335 goto err_free_aux;
336 }
337
338 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
339 if (err) {
340 mlx4_err(dev, "Failed to map cMPT context memory, aborting.\n");
341 goto err_unmap_aux;
342 }
343
344 err = mlx4_map_eq_icm(dev, init_hca->eqc_base);
345 if (err) {
346 mlx4_err(dev, "Failed to map EQ context memory, aborting.\n");
347 goto err_unmap_cmpt;
348 }
349
350 /*
351 * Reserved MTT entries must be aligned up to a cacheline
352 * boundary, since the FW will write to them, while the driver
353 * writes to all other MTT entries. (The variable
354 * dev->caps.mtt_entry_sz below is really the MTT segment
355 * size, not the raw entry size)
356 */
357 dev->caps.reserved_mtts =
358 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
359 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
360
361 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
362 init_hca->mtt_base,
363 dev->caps.mtt_entry_sz,
364 dev->caps.num_mtt_segs,
365 dev->caps.reserved_mtts, 1, 0);
366 if (err) {
367 mlx4_err(dev, "Failed to map MTT context memory, aborting.\n");
368 goto err_unmap_eq;
369 }
370
371 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
372 init_hca->dmpt_base,
373 dev_cap->dmpt_entry_sz,
374 dev->caps.num_mpts,
375 dev->caps.reserved_mrws, 1, 1);
376 if (err) {
377 mlx4_err(dev, "Failed to map dMPT context memory, aborting.\n");
378 goto err_unmap_mtt;
379 }
380
381 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
382 init_hca->qpc_base,
383 dev_cap->qpc_entry_sz,
384 dev->caps.num_qps,
385 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
386 0, 0);
387 if (err) {
388 mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
389 goto err_unmap_dmpt;
390 }
391
392 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
393 init_hca->auxc_base,
394 dev_cap->aux_entry_sz,
395 dev->caps.num_qps,
396 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
397 0, 0);
398 if (err) {
399 mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
400 goto err_unmap_qp;
401 }
402
403 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
404 init_hca->altc_base,
405 dev_cap->altc_entry_sz,
406 dev->caps.num_qps,
407 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
408 0, 0);
409 if (err) {
410 mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
411 goto err_unmap_auxc;
412 }
413
414 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
415 init_hca->rdmarc_base,
416 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
417 dev->caps.num_qps,
418 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
419 0, 0);
420 if (err) {
421 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
422 goto err_unmap_altc;
423 }
424
425 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
426 init_hca->cqc_base,
427 dev_cap->cqc_entry_sz,
428 dev->caps.num_cqs,
429 dev->caps.reserved_cqs, 0, 0);
430 if (err) {
431 mlx4_err(dev, "Failed to map CQ context memory, aborting.\n");
432 goto err_unmap_rdmarc;
433 }
434
435 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
436 init_hca->srqc_base,
437 dev_cap->srq_entry_sz,
438 dev->caps.num_srqs,
439 dev->caps.reserved_srqs, 0, 0);
440 if (err) {
441 mlx4_err(dev, "Failed to map SRQ context memory, aborting.\n");
442 goto err_unmap_cq;
443 }
444
445 /*
446 * It's not strictly required, but for simplicity just map the
447 * whole multicast group table now. The table isn't very big
448 * and it's a lot easier than trying to track ref counts.
449 */
450 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
451 init_hca->mc_base, MLX4_MGM_ENTRY_SIZE,
452 dev->caps.num_mgms + dev->caps.num_amgms,
453 dev->caps.num_mgms + dev->caps.num_amgms,
454 0, 0);
455 if (err) {
456 mlx4_err(dev, "Failed to map MCG context memory, aborting.\n");
457 goto err_unmap_srq;
458 }
459
460 return 0;
461
462 err_unmap_srq:
463 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
464
465 err_unmap_cq:
466 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
467
468 err_unmap_rdmarc:
469 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
470
471 err_unmap_altc:
472 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
473
474 err_unmap_auxc:
475 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
476
477 err_unmap_qp:
478 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
479
480 err_unmap_dmpt:
481 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
482
483 err_unmap_mtt:
484 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
485
486 err_unmap_eq:
487 mlx4_unmap_eq_icm(dev);
488
489 err_unmap_cmpt:
490 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
491 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
492 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
493 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
494
495 err_unmap_aux:
496 mlx4_UNMAP_ICM_AUX(dev);
497
498 err_free_aux:
499 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
500
501 return err;
502 }
503
504 static void mlx4_free_icms(struct mlx4_dev *dev)
505 {
506 struct mlx4_priv *priv = mlx4_priv(dev);
507
508 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
509 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
510 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
511 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
512 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
513 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
514 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
515 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
516 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
517 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
518 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
519 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
520 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
521 mlx4_unmap_eq_icm(dev);
522
523 mlx4_UNMAP_ICM_AUX(dev);
524 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
525 }
526
527 static void mlx4_close_hca(struct mlx4_dev *dev)
528 {
529 mlx4_CLOSE_HCA(dev, 0);
530 mlx4_free_icms(dev);
531 mlx4_UNMAP_FA(dev);
532 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
533 }
534
535 static int mlx4_init_hca(struct mlx4_dev *dev)
536 {
537 struct mlx4_priv *priv = mlx4_priv(dev);
538 struct mlx4_adapter adapter;
539 struct mlx4_dev_cap dev_cap;
540 struct mlx4_mod_stat_cfg mlx4_cfg;
541 struct mlx4_profile profile;
542 struct mlx4_init_hca_param init_hca;
543 u64 icm_size;
544 int err;
545
546 err = mlx4_QUERY_FW(dev);
547 if (err) {
548 mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
549 return err;
550 }
551
552 err = mlx4_load_fw(dev);
553 if (err) {
554 mlx4_err(dev, "Failed to start FW, aborting.\n");
555 return err;
556 }
557
558 mlx4_cfg.log_pg_sz_m = 1;
559 mlx4_cfg.log_pg_sz = 0;
560 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
561 if (err)
562 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
563
564 err = mlx4_dev_cap(dev, &dev_cap);
565 if (err) {
566 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
567 goto err_stop_fw;
568 }
569
570 profile = default_profile;
571
572 icm_size = mlx4_make_profile(dev, &profile, &dev_cap, &init_hca);
573 if ((long long) icm_size < 0) {
574 err = icm_size;
575 goto err_stop_fw;
576 }
577
578 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
579
580 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
581 if (err)
582 goto err_stop_fw;
583
584 err = mlx4_INIT_HCA(dev, &init_hca);
585 if (err) {
586 mlx4_err(dev, "INIT_HCA command failed, aborting.\n");
587 goto err_free_icm;
588 }
589
590 err = mlx4_QUERY_ADAPTER(dev, &adapter);
591 if (err) {
592 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting.\n");
593 goto err_close;
594 }
595
596 priv->eq_table.inta_pin = adapter.inta_pin;
597 memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
598
599 return 0;
600
601 err_close:
602 mlx4_close_hca(dev);
603
604 err_free_icm:
605 mlx4_free_icms(dev);
606
607 err_stop_fw:
608 mlx4_UNMAP_FA(dev);
609 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
610
611 return err;
612 }
613
614 static int mlx4_setup_hca(struct mlx4_dev *dev)
615 {
616 struct mlx4_priv *priv = mlx4_priv(dev);
617 int err;
618
619 err = mlx4_init_uar_table(dev);
620 if (err) {
621 mlx4_err(dev, "Failed to initialize "
622 "user access region table, aborting.\n");
623 return err;
624 }
625
626 err = mlx4_uar_alloc(dev, &priv->driver_uar);
627 if (err) {
628 mlx4_err(dev, "Failed to allocate driver access region, "
629 "aborting.\n");
630 goto err_uar_table_free;
631 }
632
633 priv->kar = ioremap(priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
634 if (!priv->kar) {
635 mlx4_err(dev, "Couldn't map kernel access region, "
636 "aborting.\n");
637 err = -ENOMEM;
638 goto err_uar_free;
639 }
640
641 err = mlx4_init_pd_table(dev);
642 if (err) {
643 mlx4_err(dev, "Failed to initialize "
644 "protection domain table, aborting.\n");
645 goto err_kar_unmap;
646 }
647
648 err = mlx4_init_mr_table(dev);
649 if (err) {
650 mlx4_err(dev, "Failed to initialize "
651 "memory region table, aborting.\n");
652 goto err_pd_table_free;
653 }
654
655 err = mlx4_init_eq_table(dev);
656 if (err) {
657 mlx4_err(dev, "Failed to initialize "
658 "event queue table, aborting.\n");
659 goto err_mr_table_free;
660 }
661
662 err = mlx4_cmd_use_events(dev);
663 if (err) {
664 mlx4_err(dev, "Failed to switch to event-driven "
665 "firmware commands, aborting.\n");
666 goto err_eq_table_free;
667 }
668
669 err = mlx4_NOP(dev);
670 if (err) {
671 if (dev->flags & MLX4_FLAG_MSI_X) {
672 mlx4_warn(dev, "NOP command failed to generate MSI-X "
673 "interrupt IRQ %d).\n",
674 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
675 mlx4_warn(dev, "Trying again without MSI-X.\n");
676 } else {
677 mlx4_err(dev, "NOP command failed to generate interrupt "
678 "(IRQ %d), aborting.\n",
679 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
680 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
681 }
682
683 goto err_cmd_poll;
684 }
685
686 mlx4_dbg(dev, "NOP command IRQ test passed\n");
687
688 err = mlx4_init_cq_table(dev);
689 if (err) {
690 mlx4_err(dev, "Failed to initialize "
691 "completion queue table, aborting.\n");
692 goto err_cmd_poll;
693 }
694
695 err = mlx4_init_srq_table(dev);
696 if (err) {
697 mlx4_err(dev, "Failed to initialize "
698 "shared receive queue table, aborting.\n");
699 goto err_cq_table_free;
700 }
701
702 err = mlx4_init_qp_table(dev);
703 if (err) {
704 mlx4_err(dev, "Failed to initialize "
705 "queue pair table, aborting.\n");
706 goto err_srq_table_free;
707 }
708
709 err = mlx4_init_mcg_table(dev);
710 if (err) {
711 mlx4_err(dev, "Failed to initialize "
712 "multicast group table, aborting.\n");
713 goto err_qp_table_free;
714 }
715
716 return 0;
717
718 err_qp_table_free:
719 mlx4_cleanup_qp_table(dev);
720
721 err_srq_table_free:
722 mlx4_cleanup_srq_table(dev);
723
724 err_cq_table_free:
725 mlx4_cleanup_cq_table(dev);
726
727 err_cmd_poll:
728 mlx4_cmd_use_polling(dev);
729
730 err_eq_table_free:
731 mlx4_cleanup_eq_table(dev);
732
733 err_mr_table_free:
734 mlx4_cleanup_mr_table(dev);
735
736 err_pd_table_free:
737 mlx4_cleanup_pd_table(dev);
738
739 err_kar_unmap:
740 iounmap(priv->kar);
741
742 err_uar_free:
743 mlx4_uar_free(dev, &priv->driver_uar);
744
745 err_uar_table_free:
746 mlx4_cleanup_uar_table(dev);
747 return err;
748 }
749
750 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
751 {
752 struct mlx4_priv *priv = mlx4_priv(dev);
753 struct msix_entry entries[MLX4_NUM_EQ];
754 int err;
755 int i;
756
757 if (msi_x) {
758 for (i = 0; i < MLX4_NUM_EQ; ++i)
759 entries[i].entry = i;
760
761 err = pci_enable_msix(dev->pdev, entries, ARRAY_SIZE(entries));
762 if (err) {
763 if (err > 0)
764 mlx4_info(dev, "Only %d MSI-X vectors available, "
765 "not using MSI-X\n", err);
766 goto no_msi;
767 }
768
769 for (i = 0; i < MLX4_NUM_EQ; ++i)
770 priv->eq_table.eq[i].irq = entries[i].vector;
771
772 dev->flags |= MLX4_FLAG_MSI_X;
773 return;
774 }
775
776 no_msi:
777 for (i = 0; i < MLX4_NUM_EQ; ++i)
778 priv->eq_table.eq[i].irq = dev->pdev->irq;
779 }
780
781 static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
782 {
783 struct mlx4_priv *priv;
784 struct mlx4_dev *dev;
785 int err;
786
787 printk(KERN_INFO PFX "Initializing %s\n",
788 pci_name(pdev));
789
790 err = pci_enable_device(pdev);
791 if (err) {
792 dev_err(&pdev->dev, "Cannot enable PCI device, "
793 "aborting.\n");
794 return err;
795 }
796
797 /*
798 * Check for BARs. We expect 0: 1MB
799 */
800 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
801 pci_resource_len(pdev, 0) != 1 << 20) {
802 dev_err(&pdev->dev, "Missing DCS, aborting.\n");
803 err = -ENODEV;
804 goto err_disable_pdev;
805 }
806 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
807 dev_err(&pdev->dev, "Missing UAR, aborting.\n");
808 err = -ENODEV;
809 goto err_disable_pdev;
810 }
811
812 err = pci_request_region(pdev, 0, DRV_NAME);
813 if (err) {
814 dev_err(&pdev->dev, "Cannot request control region, aborting.\n");
815 goto err_disable_pdev;
816 }
817
818 err = pci_request_region(pdev, 2, DRV_NAME);
819 if (err) {
820 dev_err(&pdev->dev, "Cannot request UAR region, aborting.\n");
821 goto err_release_bar0;
822 }
823
824 pci_set_master(pdev);
825
826 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
827 if (err) {
828 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
829 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
830 if (err) {
831 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
832 goto err_release_bar2;
833 }
834 }
835 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
836 if (err) {
837 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
838 "consistent PCI DMA mask.\n");
839 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
840 if (err) {
841 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
842 "aborting.\n");
843 goto err_release_bar2;
844 }
845 }
846
847 priv = kzalloc(sizeof *priv, GFP_KERNEL);
848 if (!priv) {
849 dev_err(&pdev->dev, "Device struct alloc failed, "
850 "aborting.\n");
851 err = -ENOMEM;
852 goto err_release_bar2;
853 }
854
855 dev = &priv->dev;
856 dev->pdev = pdev;
857 INIT_LIST_HEAD(&priv->ctx_list);
858 spin_lock_init(&priv->ctx_lock);
859
860 INIT_LIST_HEAD(&priv->pgdir_list);
861 mutex_init(&priv->pgdir_mutex);
862
863 /*
864 * Now reset the HCA before we touch the PCI capabilities or
865 * attempt a firmware command, since a boot ROM may have left
866 * the HCA in an undefined state.
867 */
868 err = mlx4_reset(dev);
869 if (err) {
870 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
871 goto err_free_dev;
872 }
873
874 if (mlx4_cmd_init(dev)) {
875 mlx4_err(dev, "Failed to init command interface, aborting.\n");
876 goto err_free_dev;
877 }
878
879 err = mlx4_init_hca(dev);
880 if (err)
881 goto err_cmd;
882
883 mlx4_enable_msi_x(dev);
884
885 err = mlx4_setup_hca(dev);
886 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X)) {
887 dev->flags &= ~MLX4_FLAG_MSI_X;
888 pci_disable_msix(pdev);
889 err = mlx4_setup_hca(dev);
890 }
891
892 if (err)
893 goto err_close;
894
895 err = mlx4_register_device(dev);
896 if (err)
897 goto err_cleanup;
898
899 pci_set_drvdata(pdev, dev);
900
901 return 0;
902
903 err_cleanup:
904 mlx4_cleanup_mcg_table(dev);
905 mlx4_cleanup_qp_table(dev);
906 mlx4_cleanup_srq_table(dev);
907 mlx4_cleanup_cq_table(dev);
908 mlx4_cmd_use_polling(dev);
909 mlx4_cleanup_eq_table(dev);
910 mlx4_cleanup_mr_table(dev);
911 mlx4_cleanup_pd_table(dev);
912 mlx4_cleanup_uar_table(dev);
913
914 err_close:
915 if (dev->flags & MLX4_FLAG_MSI_X)
916 pci_disable_msix(pdev);
917
918 mlx4_close_hca(dev);
919
920 err_cmd:
921 mlx4_cmd_cleanup(dev);
922
923 err_free_dev:
924 kfree(priv);
925
926 err_release_bar2:
927 pci_release_region(pdev, 2);
928
929 err_release_bar0:
930 pci_release_region(pdev, 0);
931
932 err_disable_pdev:
933 pci_disable_device(pdev);
934 pci_set_drvdata(pdev, NULL);
935 return err;
936 }
937
938 static int __devinit mlx4_init_one(struct pci_dev *pdev,
939 const struct pci_device_id *id)
940 {
941 static int mlx4_version_printed;
942
943 if (!mlx4_version_printed) {
944 printk(KERN_INFO "%s", mlx4_version);
945 ++mlx4_version_printed;
946 }
947
948 return __mlx4_init_one(pdev, id);
949 }
950
951 static void mlx4_remove_one(struct pci_dev *pdev)
952 {
953 struct mlx4_dev *dev = pci_get_drvdata(pdev);
954 struct mlx4_priv *priv = mlx4_priv(dev);
955 int p;
956
957 if (dev) {
958 mlx4_unregister_device(dev);
959
960 for (p = 1; p <= dev->caps.num_ports; ++p)
961 mlx4_CLOSE_PORT(dev, p);
962
963 mlx4_cleanup_mcg_table(dev);
964 mlx4_cleanup_qp_table(dev);
965 mlx4_cleanup_srq_table(dev);
966 mlx4_cleanup_cq_table(dev);
967 mlx4_cmd_use_polling(dev);
968 mlx4_cleanup_eq_table(dev);
969 mlx4_cleanup_mr_table(dev);
970 mlx4_cleanup_pd_table(dev);
971
972 iounmap(priv->kar);
973 mlx4_uar_free(dev, &priv->driver_uar);
974 mlx4_cleanup_uar_table(dev);
975 mlx4_close_hca(dev);
976 mlx4_cmd_cleanup(dev);
977
978 if (dev->flags & MLX4_FLAG_MSI_X)
979 pci_disable_msix(pdev);
980
981 kfree(priv);
982 pci_release_region(pdev, 2);
983 pci_release_region(pdev, 0);
984 pci_disable_device(pdev);
985 pci_set_drvdata(pdev, NULL);
986 }
987 }
988
989 int mlx4_restart_one(struct pci_dev *pdev)
990 {
991 mlx4_remove_one(pdev);
992 return __mlx4_init_one(pdev, NULL);
993 }
994
995 static struct pci_device_id mlx4_pci_table[] = {
996 { PCI_VDEVICE(MELLANOX, 0x6340) }, /* MT25408 "Hermon" SDR */
997 { PCI_VDEVICE(MELLANOX, 0x634a) }, /* MT25408 "Hermon" DDR */
998 { PCI_VDEVICE(MELLANOX, 0x6354) }, /* MT25408 "Hermon" QDR */
999 { PCI_VDEVICE(MELLANOX, 0x6732) }, /* MT25408 "Hermon" DDR PCIe gen2 */
1000 { PCI_VDEVICE(MELLANOX, 0x673c) }, /* MT25408 "Hermon" QDR PCIe gen2 */
1001 { 0, }
1002 };
1003
1004 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
1005
1006 static struct pci_driver mlx4_driver = {
1007 .name = DRV_NAME,
1008 .id_table = mlx4_pci_table,
1009 .probe = mlx4_init_one,
1010 .remove = __devexit_p(mlx4_remove_one)
1011 };
1012
1013 static int __init mlx4_init(void)
1014 {
1015 int ret;
1016
1017 ret = mlx4_catas_init();
1018 if (ret)
1019 return ret;
1020
1021 ret = pci_register_driver(&mlx4_driver);
1022 return ret < 0 ? ret : 0;
1023 }
1024
1025 static void __exit mlx4_cleanup(void)
1026 {
1027 pci_unregister_driver(&mlx4_driver);
1028 mlx4_catas_cleanup();
1029 }
1030
1031 module_init(mlx4_init);
1032 module_exit(mlx4_cleanup);
Linux kernel - Deliverables
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