libata: export xfermode / PATA timing related functions
[linux-2.6] / 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 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 const 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 __devinit 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 __devinit 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         dev->rev_id             = adapter.revision_id;
538         memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
539
540         return 0;
541
542 err_close:
543         mlx4_close_hca(dev);
544
545 err_free_icm:
546         mlx4_free_icms(dev);
547
548 err_stop_fw:
549         mlx4_UNMAP_FA(dev);
550         mlx4_free_icm(dev, priv->fw.fw_icm, 0);
551
552         return err;
553 }
554
555 static int mlx4_setup_hca(struct mlx4_dev *dev)
556 {
557         struct mlx4_priv *priv = mlx4_priv(dev);
558         int err;
559
560         err = mlx4_init_uar_table(dev);
561         if (err) {
562                 mlx4_err(dev, "Failed to initialize "
563                          "user access region table, aborting.\n");
564                 return err;
565         }
566
567         err = mlx4_uar_alloc(dev, &priv->driver_uar);
568         if (err) {
569                 mlx4_err(dev, "Failed to allocate driver access region, "
570                          "aborting.\n");
571                 goto err_uar_table_free;
572         }
573
574         priv->kar = ioremap(priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
575         if (!priv->kar) {
576                 mlx4_err(dev, "Couldn't map kernel access region, "
577                          "aborting.\n");
578                 err = -ENOMEM;
579                 goto err_uar_free;
580         }
581
582         err = mlx4_init_pd_table(dev);
583         if (err) {
584                 mlx4_err(dev, "Failed to initialize "
585                          "protection domain table, aborting.\n");
586                 goto err_kar_unmap;
587         }
588
589         err = mlx4_init_mr_table(dev);
590         if (err) {
591                 mlx4_err(dev, "Failed to initialize "
592                          "memory region table, aborting.\n");
593                 goto err_pd_table_free;
594         }
595
596         err = mlx4_init_eq_table(dev);
597         if (err) {
598                 mlx4_err(dev, "Failed to initialize "
599                          "event queue table, aborting.\n");
600                 goto err_mr_table_free;
601         }
602
603         err = mlx4_cmd_use_events(dev);
604         if (err) {
605                 mlx4_err(dev, "Failed to switch to event-driven "
606                          "firmware commands, aborting.\n");
607                 goto err_eq_table_free;
608         }
609
610         err = mlx4_NOP(dev);
611         if (err) {
612                 if (dev->flags & MLX4_FLAG_MSI_X) {
613                         mlx4_warn(dev, "NOP command failed to generate MSI-X "
614                                   "interrupt IRQ %d).\n",
615                                   priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
616                         mlx4_warn(dev, "Trying again without MSI-X.\n");
617                 } else {
618                         mlx4_err(dev, "NOP command failed to generate interrupt "
619                                  "(IRQ %d), aborting.\n",
620                                  priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
621                         mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
622                 }
623
624                 goto err_cmd_poll;
625         }
626
627         mlx4_dbg(dev, "NOP command IRQ test passed\n");
628
629         err = mlx4_init_cq_table(dev);
630         if (err) {
631                 mlx4_err(dev, "Failed to initialize "
632                          "completion queue table, aborting.\n");
633                 goto err_cmd_poll;
634         }
635
636         err = mlx4_init_srq_table(dev);
637         if (err) {
638                 mlx4_err(dev, "Failed to initialize "
639                          "shared receive queue table, aborting.\n");
640                 goto err_cq_table_free;
641         }
642
643         err = mlx4_init_qp_table(dev);
644         if (err) {
645                 mlx4_err(dev, "Failed to initialize "
646                          "queue pair table, aborting.\n");
647                 goto err_srq_table_free;
648         }
649
650         err = mlx4_init_mcg_table(dev);
651         if (err) {
652                 mlx4_err(dev, "Failed to initialize "
653                          "multicast group table, aborting.\n");
654                 goto err_qp_table_free;
655         }
656
657         return 0;
658
659 err_qp_table_free:
660         mlx4_cleanup_qp_table(dev);
661
662 err_srq_table_free:
663         mlx4_cleanup_srq_table(dev);
664
665 err_cq_table_free:
666         mlx4_cleanup_cq_table(dev);
667
668 err_cmd_poll:
669         mlx4_cmd_use_polling(dev);
670
671 err_eq_table_free:
672         mlx4_cleanup_eq_table(dev);
673
674 err_mr_table_free:
675         mlx4_cleanup_mr_table(dev);
676
677 err_pd_table_free:
678         mlx4_cleanup_pd_table(dev);
679
680 err_kar_unmap:
681         iounmap(priv->kar);
682
683 err_uar_free:
684         mlx4_uar_free(dev, &priv->driver_uar);
685
686 err_uar_table_free:
687         mlx4_cleanup_uar_table(dev);
688         return err;
689 }
690
691 static void __devinit mlx4_enable_msi_x(struct mlx4_dev *dev)
692 {
693         struct mlx4_priv *priv = mlx4_priv(dev);
694         struct msix_entry entries[MLX4_NUM_EQ];
695         int err;
696         int i;
697
698         if (msi_x) {
699                 for (i = 0; i < MLX4_NUM_EQ; ++i)
700                         entries[i].entry = i;
701
702                 err = pci_enable_msix(dev->pdev, entries, ARRAY_SIZE(entries));
703                 if (err) {
704                         if (err > 0)
705                                 mlx4_info(dev, "Only %d MSI-X vectors available, "
706                                           "not using MSI-X\n", err);
707                         goto no_msi;
708                 }
709
710                 for (i = 0; i < MLX4_NUM_EQ; ++i)
711                         priv->eq_table.eq[i].irq = entries[i].vector;
712
713                 dev->flags |= MLX4_FLAG_MSI_X;
714                 return;
715         }
716
717 no_msi:
718         for (i = 0; i < MLX4_NUM_EQ; ++i)
719                 priv->eq_table.eq[i].irq = dev->pdev->irq;
720 }
721
722 static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
723 {
724         struct mlx4_priv *priv;
725         struct mlx4_dev *dev;
726         int err;
727
728         printk(KERN_INFO PFX "Initializing %s\n",
729                pci_name(pdev));
730
731         err = pci_enable_device(pdev);
732         if (err) {
733                 dev_err(&pdev->dev, "Cannot enable PCI device, "
734                         "aborting.\n");
735                 return err;
736         }
737
738         /*
739          * Check for BARs.  We expect 0: 1MB, 2: 8MB, 4: DDR (may not
740          * be present)
741          */
742         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
743             pci_resource_len(pdev, 0) != 1 << 20) {
744                 dev_err(&pdev->dev, "Missing DCS, aborting.\n");
745                 err = -ENODEV;
746                 goto err_disable_pdev;
747         }
748         if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
749                 dev_err(&pdev->dev, "Missing UAR, aborting.\n");
750                 err = -ENODEV;
751                 goto err_disable_pdev;
752         }
753
754         err = pci_request_region(pdev, 0, DRV_NAME);
755         if (err) {
756                 dev_err(&pdev->dev, "Cannot request control region, aborting.\n");
757                 goto err_disable_pdev;
758         }
759
760         err = pci_request_region(pdev, 2, DRV_NAME);
761         if (err) {
762                 dev_err(&pdev->dev, "Cannot request UAR region, aborting.\n");
763                 goto err_release_bar0;
764         }
765
766         pci_set_master(pdev);
767
768         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
769         if (err) {
770                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
771                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
772                 if (err) {
773                         dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
774                         goto err_release_bar2;
775                 }
776         }
777         err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
778         if (err) {
779                 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
780                          "consistent PCI DMA mask.\n");
781                 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
782                 if (err) {
783                         dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
784                                 "aborting.\n");
785                         goto err_release_bar2;
786                 }
787         }
788
789         priv = kzalloc(sizeof *priv, GFP_KERNEL);
790         if (!priv) {
791                 dev_err(&pdev->dev, "Device struct alloc failed, "
792                         "aborting.\n");
793                 err = -ENOMEM;
794                 goto err_release_bar2;
795         }
796
797         dev       = &priv->dev;
798         dev->pdev = pdev;
799         INIT_LIST_HEAD(&priv->ctx_list);
800         spin_lock_init(&priv->ctx_lock);
801
802         /*
803          * Now reset the HCA before we touch the PCI capabilities or
804          * attempt a firmware command, since a boot ROM may have left
805          * the HCA in an undefined state.
806          */
807         err = mlx4_reset(dev);
808         if (err) {
809                 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
810                 goto err_free_dev;
811         }
812
813         if (mlx4_cmd_init(dev)) {
814                 mlx4_err(dev, "Failed to init command interface, aborting.\n");
815                 goto err_free_dev;
816         }
817
818         err = mlx4_init_hca(dev);
819         if (err)
820                 goto err_cmd;
821
822         mlx4_enable_msi_x(dev);
823
824         err = mlx4_setup_hca(dev);
825         if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X)) {
826                 dev->flags &= ~MLX4_FLAG_MSI_X;
827                 pci_disable_msix(pdev);
828                 err = mlx4_setup_hca(dev);
829         }
830
831         if (err)
832                 goto err_close;
833
834         err = mlx4_register_device(dev);
835         if (err)
836                 goto err_cleanup;
837
838         pci_set_drvdata(pdev, dev);
839
840         return 0;
841
842 err_cleanup:
843         mlx4_cleanup_mcg_table(dev);
844         mlx4_cleanup_qp_table(dev);
845         mlx4_cleanup_srq_table(dev);
846         mlx4_cleanup_cq_table(dev);
847         mlx4_cmd_use_polling(dev);
848         mlx4_cleanup_eq_table(dev);
849         mlx4_cleanup_mr_table(dev);
850         mlx4_cleanup_pd_table(dev);
851         mlx4_cleanup_uar_table(dev);
852
853 err_close:
854         if (dev->flags & MLX4_FLAG_MSI_X)
855                 pci_disable_msix(pdev);
856
857         mlx4_close_hca(dev);
858
859 err_cmd:
860         mlx4_cmd_cleanup(dev);
861
862 err_free_dev:
863         kfree(priv);
864
865 err_release_bar2:
866         pci_release_region(pdev, 2);
867
868 err_release_bar0:
869         pci_release_region(pdev, 0);
870
871 err_disable_pdev:
872         pci_disable_device(pdev);
873         pci_set_drvdata(pdev, NULL);
874         return err;
875 }
876
877 static int __devinit mlx4_init_one(struct pci_dev *pdev,
878                                    const struct pci_device_id *id)
879 {
880         static int mlx4_version_printed;
881
882         if (!mlx4_version_printed) {
883                 printk(KERN_INFO "%s", mlx4_version);
884                 ++mlx4_version_printed;
885         }
886
887         return __mlx4_init_one(pdev, id);
888 }
889
890 static void mlx4_remove_one(struct pci_dev *pdev)
891 {
892         struct mlx4_dev  *dev  = pci_get_drvdata(pdev);
893         struct mlx4_priv *priv = mlx4_priv(dev);
894         int p;
895
896         if (dev) {
897                 mlx4_unregister_device(dev);
898
899                 for (p = 1; p <= dev->caps.num_ports; ++p)
900                         mlx4_CLOSE_PORT(dev, p);
901
902                 mlx4_cleanup_mcg_table(dev);
903                 mlx4_cleanup_qp_table(dev);
904                 mlx4_cleanup_srq_table(dev);
905                 mlx4_cleanup_cq_table(dev);
906                 mlx4_cmd_use_polling(dev);
907                 mlx4_cleanup_eq_table(dev);
908                 mlx4_cleanup_mr_table(dev);
909                 mlx4_cleanup_pd_table(dev);
910
911                 iounmap(priv->kar);
912                 mlx4_uar_free(dev, &priv->driver_uar);
913                 mlx4_cleanup_uar_table(dev);
914                 mlx4_close_hca(dev);
915                 mlx4_cmd_cleanup(dev);
916
917                 if (dev->flags & MLX4_FLAG_MSI_X)
918                         pci_disable_msix(pdev);
919
920                 kfree(priv);
921                 pci_release_region(pdev, 2);
922                 pci_release_region(pdev, 0);
923                 pci_disable_device(pdev);
924                 pci_set_drvdata(pdev, NULL);
925         }
926 }
927
928 int mlx4_restart_one(struct pci_dev *pdev)
929 {
930         mlx4_remove_one(pdev);
931         return __mlx4_init_one(pdev, NULL);
932 }
933
934 static struct pci_device_id mlx4_pci_table[] = {
935         { PCI_VDEVICE(MELLANOX, 0x6340) }, /* MT25408 "Hermon" SDR */
936         { PCI_VDEVICE(MELLANOX, 0x634a) }, /* MT25408 "Hermon" DDR */
937         { PCI_VDEVICE(MELLANOX, 0x6354) }, /* MT25408 "Hermon" QDR */
938         { PCI_VDEVICE(MELLANOX, 0x6732) }, /* MT25408 "Hermon" DDR PCIe gen2 */
939         { PCI_VDEVICE(MELLANOX, 0x673c) }, /* MT25408 "Hermon" QDR PCIe gen2 */
940         { 0, }
941 };
942
943 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
944
945 static struct pci_driver mlx4_driver = {
946         .name           = DRV_NAME,
947         .id_table       = mlx4_pci_table,
948         .probe          = mlx4_init_one,
949         .remove         = __devexit_p(mlx4_remove_one)
950 };
951
952 static int __init mlx4_init(void)
953 {
954         int ret;
955
956         ret = mlx4_catas_init();
957         if (ret)
958                 return ret;
959
960         ret = pci_register_driver(&mlx4_driver);
961         return ret < 0 ? ret : 0;
962 }
963
964 static void __exit mlx4_cleanup(void)
965 {
966         pci_unregister_driver(&mlx4_driver);
967         mlx4_catas_cleanup();
968 }
969
970 module_init(mlx4_init);
971 module_exit(mlx4_cleanup);