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[PATCH] IB/mthca: print assigned IRQ when interrupt test fails
[linux-2.6/linux-loongson.git] / drivers / infiniband / hw / mthca / mthca_main.c
blob144aed417faacf94d60ebff34067e71553c86bb4
1 /*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 * $Id: mthca_main.c 1396 2004-12-28 04:10:27Z roland $
33 */
34
35 #include <linux/config.h>
36 #include <linux/version.h>
37 #include <linux/module.h>
38 #include <linux/init.h>
39 #include <linux/errno.h>
40 #include <linux/pci.h>
41 #include <linux/interrupt.h>
42
43 #include "mthca_dev.h"
44 #include "mthca_config_reg.h"
45 #include "mthca_cmd.h"
46 #include "mthca_profile.h"
47 #include "mthca_memfree.h"
48
49 MODULE_AUTHOR("Roland Dreier");
50 MODULE_DESCRIPTION("Mellanox InfiniBand HCA low-level driver");
51 MODULE_LICENSE("Dual BSD/GPL");
52 MODULE_VERSION(DRV_VERSION);
53
54 #ifdef CONFIG_PCI_MSI
55
56 static int msi_x = 0;
57 module_param(msi_x, int, 0444);
58 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
59
60 static int msi = 0;
61 module_param(msi, int, 0444);
62 MODULE_PARM_DESC(msi, "attempt to use MSI if nonzero");
63
64 #else /* CONFIG_PCI_MSI */
65
66 #define msi_x (0)
67 #define msi (0)
68
69 #endif /* CONFIG_PCI_MSI */
70
71 static const char mthca_version[] __devinitdata =
72 "ib_mthca: Mellanox InfiniBand HCA driver v"
73 DRV_VERSION " (" DRV_RELDATE ")\n";
74
75 static struct mthca_profile default_profile = {
76 .num_qp = 1 << 16,
77 .rdb_per_qp = 4,
78 .num_cq = 1 << 16,
79 .num_mcg = 1 << 13,
80 .num_mpt = 1 << 17,
81 .num_mtt = 1 << 20,
82 .num_udav = 1 << 15, /* Tavor only */
83 .uarc_size = 1 << 18, /* Arbel only */
84 };
85
86 static int __devinit mthca_tune_pci(struct mthca_dev *mdev)
87 {
88 int cap;
89 u16 val;
90
91 /* First try to max out Read Byte Count */
92 cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX);
93 if (cap) {
94 if (pci_read_config_word(mdev->pdev, cap + PCI_X_CMD, &val)) {
95 mthca_err(mdev, "Couldn't read PCI-X command register, "
96 "aborting.\n");
97 return -ENODEV;
98 }
99 val = (val & ~PCI_X_CMD_MAX_READ) | (3 << 2);
100 if (pci_write_config_word(mdev->pdev, cap + PCI_X_CMD, val)) {
101 mthca_err(mdev, "Couldn't write PCI-X command register, "
102 "aborting.\n");
103 return -ENODEV;
104 }
105 } else if (mdev->hca_type == TAVOR)
106 mthca_info(mdev, "No PCI-X capability, not setting RBC.\n");
107
108 cap = pci_find_capability(mdev->pdev, PCI_CAP_ID_EXP);
109 if (cap) {
110 if (pci_read_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, &val)) {
111 mthca_err(mdev, "Couldn't read PCI Express device control "
112 "register, aborting.\n");
113 return -ENODEV;
114 }
115 val = (val & ~PCI_EXP_DEVCTL_READRQ) | (5 << 12);
116 if (pci_write_config_word(mdev->pdev, cap + PCI_EXP_DEVCTL, val)) {
117 mthca_err(mdev, "Couldn't write PCI Express device control "
118 "register, aborting.\n");
119 return -ENODEV;
120 }
121 } else if (mdev->hca_type == ARBEL_NATIVE ||
122 mdev->hca_type == ARBEL_COMPAT)
123 mthca_info(mdev, "No PCI Express capability, "
124 "not setting Max Read Request Size.\n");
125
126 return 0;
127 }
128
129 static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim *dev_lim)
130 {
131 int err;
132 u8 status;
133
134 err = mthca_QUERY_DEV_LIM(mdev, dev_lim, &status);
135 if (err) {
136 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n");
137 return err;
138 }
139 if (status) {
140 mthca_err(mdev, "QUERY_DEV_LIM returned status 0x%02x, "
141 "aborting.\n", status);
142 return -EINVAL;
143 }
144 if (dev_lim->min_page_sz > PAGE_SIZE) {
145 mthca_err(mdev, "HCA minimum page size of %d bigger than "
146 "kernel PAGE_SIZE of %ld, aborting.\n",
147 dev_lim->min_page_sz, PAGE_SIZE);
148 return -ENODEV;
149 }
150 if (dev_lim->num_ports > MTHCA_MAX_PORTS) {
151 mthca_err(mdev, "HCA has %d ports, but we only support %d, "
152 "aborting.\n",
153 dev_lim->num_ports, MTHCA_MAX_PORTS);
154 return -ENODEV;
155 }
156
157 mdev->limits.num_ports = dev_lim->num_ports;
158 mdev->limits.vl_cap = dev_lim->max_vl;
159 mdev->limits.mtu_cap = dev_lim->max_mtu;
160 mdev->limits.gid_table_len = dev_lim->max_gids;
161 mdev->limits.pkey_table_len = dev_lim->max_pkeys;
162 mdev->limits.local_ca_ack_delay = dev_lim->local_ca_ack_delay;
163 mdev->limits.max_sg = dev_lim->max_sg;
164 mdev->limits.reserved_qps = dev_lim->reserved_qps;
165 mdev->limits.reserved_srqs = dev_lim->reserved_srqs;
166 mdev->limits.reserved_eecs = dev_lim->reserved_eecs;
167 mdev->limits.reserved_cqs = dev_lim->reserved_cqs;
168 mdev->limits.reserved_eqs = dev_lim->reserved_eqs;
169 mdev->limits.reserved_mtts = dev_lim->reserved_mtts;
170 mdev->limits.reserved_mrws = dev_lim->reserved_mrws;
171 mdev->limits.reserved_uars = dev_lim->reserved_uars;
172 mdev->limits.reserved_pds = dev_lim->reserved_pds;
173
174 /* IB_DEVICE_RESIZE_MAX_WR not supported by driver.
175 May be doable since hardware supports it for SRQ.
176
177 IB_DEVICE_N_NOTIFY_CQ is supported by hardware but not by driver.
178
179 IB_DEVICE_SRQ_RESIZE is supported by hardware but SRQ is not
180 supported by driver. */
181 mdev->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
182 IB_DEVICE_PORT_ACTIVE_EVENT |
183 IB_DEVICE_SYS_IMAGE_GUID |
184 IB_DEVICE_RC_RNR_NAK_GEN;
185
186 if (dev_lim->flags & DEV_LIM_FLAG_BAD_PKEY_CNTR)
187 mdev->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
188
189 if (dev_lim->flags & DEV_LIM_FLAG_BAD_QKEY_CNTR)
190 mdev->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
191
192 if (dev_lim->flags & DEV_LIM_FLAG_RAW_MULTI)
193 mdev->device_cap_flags |= IB_DEVICE_RAW_MULTI;
194
195 if (dev_lim->flags & DEV_LIM_FLAG_AUTO_PATH_MIG)
196 mdev->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
197
198 if (dev_lim->flags & DEV_LIM_FLAG_UD_AV_PORT_ENFORCE)
199 mdev->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
200
201 if (dev_lim->flags & DEV_LIM_FLAG_SRQ)
202 mdev->mthca_flags |= MTHCA_FLAG_SRQ;
203
204 return 0;
205 }
206
207 static int __devinit mthca_init_tavor(struct mthca_dev *mdev)
208 {
209 u8 status;
210 int err;
211 struct mthca_dev_lim dev_lim;
212 struct mthca_profile profile;
213 struct mthca_init_hca_param init_hca;
214 struct mthca_adapter adapter;
215
216 err = mthca_SYS_EN(mdev, &status);
217 if (err) {
218 mthca_err(mdev, "SYS_EN command failed, aborting.\n");
219 return err;
220 }
221 if (status) {
222 mthca_err(mdev, "SYS_EN returned status 0x%02x, "
223 "aborting.\n", status);
224 return -EINVAL;
225 }
226
227 err = mthca_QUERY_FW(mdev, &status);
228 if (err) {
229 mthca_err(mdev, "QUERY_FW command failed, aborting.\n");
230 goto err_disable;
231 }
232 if (status) {
233 mthca_err(mdev, "QUERY_FW returned status 0x%02x, "
234 "aborting.\n", status);
235 err = -EINVAL;
236 goto err_disable;
237 }
238 err = mthca_QUERY_DDR(mdev, &status);
239 if (err) {
240 mthca_err(mdev, "QUERY_DDR command failed, aborting.\n");
241 goto err_disable;
242 }
243 if (status) {
244 mthca_err(mdev, "QUERY_DDR returned status 0x%02x, "
245 "aborting.\n", status);
246 err = -EINVAL;
247 goto err_disable;
248 }
249
250 err = mthca_dev_lim(mdev, &dev_lim);
251
252 profile = default_profile;
253 profile.num_uar = dev_lim.uar_size / PAGE_SIZE;
254 profile.uarc_size = 0;
255
256 err = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
257 if (err < 0)
258 goto err_disable;
259
260 err = mthca_INIT_HCA(mdev, &init_hca, &status);
261 if (err) {
262 mthca_err(mdev, "INIT_HCA command failed, aborting.\n");
263 goto err_disable;
264 }
265 if (status) {
266 mthca_err(mdev, "INIT_HCA returned status 0x%02x, "
267 "aborting.\n", status);
268 err = -EINVAL;
269 goto err_disable;
270 }
271
272 err = mthca_QUERY_ADAPTER(mdev, &adapter, &status);
273 if (err) {
274 mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n");
275 goto err_close;
276 }
277 if (status) {
278 mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, "
279 "aborting.\n", status);
280 err = -EINVAL;
281 goto err_close;
282 }
283
284 mdev->eq_table.inta_pin = adapter.inta_pin;
285 mdev->rev_id = adapter.revision_id;
286
287 return 0;
288
289 err_close:
290 mthca_CLOSE_HCA(mdev, 0, &status);
291
292 err_disable:
293 mthca_SYS_DIS(mdev, &status);
294
295 return err;
296 }
297
298 static int __devinit mthca_load_fw(struct mthca_dev *mdev)
299 {
300 u8 status;
301 int err;
302
303 /* FIXME: use HCA-attached memory for FW if present */
304
305 mdev->fw.arbel.fw_icm =
306 mthca_alloc_icm(mdev, mdev->fw.arbel.fw_pages,
307 GFP_HIGHUSER | __GFP_NOWARN);
308 if (!mdev->fw.arbel.fw_icm) {
309 mthca_err(mdev, "Couldn't allocate FW area, aborting.\n");
310 return -ENOMEM;
311 }
312
313 err = mthca_MAP_FA(mdev, mdev->fw.arbel.fw_icm, &status);
314 if (err) {
315 mthca_err(mdev, "MAP_FA command failed, aborting.\n");
316 goto err_free;
317 }
318 if (status) {
319 mthca_err(mdev, "MAP_FA returned status 0x%02x, aborting.\n", status);
320 err = -EINVAL;
321 goto err_free;
322 }
323 err = mthca_RUN_FW(mdev, &status);
324 if (err) {
325 mthca_err(mdev, "RUN_FW command failed, aborting.\n");
326 goto err_unmap_fa;
327 }
328 if (status) {
329 mthca_err(mdev, "RUN_FW returned status 0x%02x, aborting.\n", status);
330 err = -EINVAL;
331 goto err_unmap_fa;
332 }
333
334 return 0;
335
336 err_unmap_fa:
337 mthca_UNMAP_FA(mdev, &status);
338
339 err_free:
340 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
341 return err;
342 }
343
344 static int __devinit mthca_init_icm(struct mthca_dev *mdev,
345 struct mthca_dev_lim *dev_lim,
346 struct mthca_init_hca_param *init_hca,
347 u64 icm_size)
348 {
349 u64 aux_pages;
350 u8 status;
351 int err;
352
353 err = mthca_SET_ICM_SIZE(mdev, icm_size, &aux_pages, &status);
354 if (err) {
355 mthca_err(mdev, "SET_ICM_SIZE command failed, aborting.\n");
356 return err;
357 }
358 if (status) {
359 mthca_err(mdev, "SET_ICM_SIZE returned status 0x%02x, "
360 "aborting.\n", status);
361 return -EINVAL;
362 }
363
364 mthca_dbg(mdev, "%lld KB of HCA context requires %lld KB aux memory.\n",
365 (unsigned long long) icm_size >> 10,
366 (unsigned long long) aux_pages << 2);
367
368 mdev->fw.arbel.aux_icm = mthca_alloc_icm(mdev, aux_pages,
369 GFP_HIGHUSER | __GFP_NOWARN);
370 if (!mdev->fw.arbel.aux_icm) {
371 mthca_err(mdev, "Couldn't allocate aux memory, aborting.\n");
372 return -ENOMEM;
373 }
374
375 err = mthca_MAP_ICM_AUX(mdev, mdev->fw.arbel.aux_icm, &status);
376 if (err) {
377 mthca_err(mdev, "MAP_ICM_AUX command failed, aborting.\n");
378 goto err_free_aux;
379 }
380 if (status) {
381 mthca_err(mdev, "MAP_ICM_AUX returned status 0x%02x, aborting.\n", status);
382 err = -EINVAL;
383 goto err_free_aux;
384 }
385
386 err = mthca_map_eq_icm(mdev, init_hca->eqc_base);
387 if (err) {
388 mthca_err(mdev, "Failed to map EQ context memory, aborting.\n");
389 goto err_unmap_aux;
390 }
391
392 mdev->mr_table.mtt_table = mthca_alloc_icm_table(mdev, init_hca->mtt_base,
393 dev_lim->mtt_seg_sz,
394 mdev->limits.num_mtt_segs,
395 mdev->limits.reserved_mtts, 1);
396 if (!mdev->mr_table.mtt_table) {
397 mthca_err(mdev, "Failed to map MTT context memory, aborting.\n");
398 err = -ENOMEM;
399 goto err_unmap_eq;
400 }
401
402 mdev->mr_table.mpt_table = mthca_alloc_icm_table(mdev, init_hca->mpt_base,
403 dev_lim->mpt_entry_sz,
404 mdev->limits.num_mpts,
405 mdev->limits.reserved_mrws, 1);
406 if (!mdev->mr_table.mpt_table) {
407 mthca_err(mdev, "Failed to map MPT context memory, aborting.\n");
408 err = -ENOMEM;
409 goto err_unmap_mtt;
410 }
411
412 mdev->qp_table.qp_table = mthca_alloc_icm_table(mdev, init_hca->qpc_base,
413 dev_lim->qpc_entry_sz,
414 mdev->limits.num_qps,
415 mdev->limits.reserved_qps, 0);
416 if (!mdev->qp_table.qp_table) {
417 mthca_err(mdev, "Failed to map QP context memory, aborting.\n");
418 err = -ENOMEM;
419 goto err_unmap_mpt;
420 }
421
422 mdev->qp_table.eqp_table = mthca_alloc_icm_table(mdev, init_hca->eqpc_base,
423 dev_lim->eqpc_entry_sz,
424 mdev->limits.num_qps,
425 mdev->limits.reserved_qps, 0);
426 if (!mdev->qp_table.eqp_table) {
427 mthca_err(mdev, "Failed to map EQP context memory, aborting.\n");
428 err = -ENOMEM;
429 goto err_unmap_qp;
430 }
431
432 mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base,
433 dev_lim->cqc_entry_sz,
434 mdev->limits.num_cqs,
435 mdev->limits.reserved_cqs, 0);
436 if (!mdev->cq_table.table) {
437 mthca_err(mdev, "Failed to map CQ context memory, aborting.\n");
438 err = -ENOMEM;
439 goto err_unmap_eqp;
440 }
441
442 /*
443 * It's not strictly required, but for simplicity just map the
444 * whole multicast group table now. The table isn't very big
445 * and it's a lot easier than trying to track ref counts.
446 */
447 mdev->mcg_table.table = mthca_alloc_icm_table(mdev, init_hca->mc_base,
448 MTHCA_MGM_ENTRY_SIZE,
449 mdev->limits.num_mgms +
450 mdev->limits.num_amgms,
451 mdev->limits.num_mgms +
452 mdev->limits.num_amgms,
453 0);
454 if (!mdev->mcg_table.table) {
455 mthca_err(mdev, "Failed to map MCG context memory, aborting.\n");
456 err = -ENOMEM;
457 goto err_unmap_cq;
458 }
459
460 return 0;
461
462 err_unmap_cq:
463 mthca_free_icm_table(mdev, mdev->cq_table.table);
464
465 err_unmap_eqp:
466 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
467
468 err_unmap_qp:
469 mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
470
471 err_unmap_mpt:
472 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
473
474 err_unmap_mtt:
475 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
476
477 err_unmap_eq:
478 mthca_unmap_eq_icm(mdev);
479
480 err_unmap_aux:
481 mthca_UNMAP_ICM_AUX(mdev, &status);
482
483 err_free_aux:
484 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm);
485
486 return err;
487 }
488
489 static int __devinit mthca_init_arbel(struct mthca_dev *mdev)
490 {
491 struct mthca_dev_lim dev_lim;
492 struct mthca_profile profile;
493 struct mthca_init_hca_param init_hca;
494 struct mthca_adapter adapter;
495 u64 icm_size;
496 u8 status;
497 int err;
498
499 err = mthca_QUERY_FW(mdev, &status);
500 if (err) {
501 mthca_err(mdev, "QUERY_FW command failed, aborting.\n");
502 return err;
503 }
504 if (status) {
505 mthca_err(mdev, "QUERY_FW returned status 0x%02x, "
506 "aborting.\n", status);
507 return -EINVAL;
508 }
509
510 err = mthca_ENABLE_LAM(mdev, &status);
511 if (err) {
512 mthca_err(mdev, "ENABLE_LAM command failed, aborting.\n");
513 return err;
514 }
515 if (status == MTHCA_CMD_STAT_LAM_NOT_PRE) {
516 mthca_dbg(mdev, "No HCA-attached memory (running in MemFree mode)\n");
517 mdev->mthca_flags |= MTHCA_FLAG_NO_LAM;
518 } else if (status) {
519 mthca_err(mdev, "ENABLE_LAM returned status 0x%02x, "
520 "aborting.\n", status);
521 return -EINVAL;
522 }
523
524 err = mthca_load_fw(mdev);
525 if (err) {
526 mthca_err(mdev, "Failed to start FW, aborting.\n");
527 goto err_disable;
528 }
529
530 err = mthca_dev_lim(mdev, &dev_lim);
531 if (err) {
532 mthca_err(mdev, "QUERY_DEV_LIM command failed, aborting.\n");
533 goto err_stop_fw;
534 }
535
536 profile = default_profile;
537 profile.num_uar = dev_lim.uar_size / PAGE_SIZE;
538 profile.num_udav = 0;
539
540 icm_size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
541 if ((int) icm_size < 0) {
542 err = icm_size;
543 goto err_stop_fw;
544 }
545
546 err = mthca_init_icm(mdev, &dev_lim, &init_hca, icm_size);
547 if (err)
548 goto err_stop_fw;
549
550 err = mthca_INIT_HCA(mdev, &init_hca, &status);
551 if (err) {
552 mthca_err(mdev, "INIT_HCA command failed, aborting.\n");
553 goto err_free_icm;
554 }
555 if (status) {
556 mthca_err(mdev, "INIT_HCA returned status 0x%02x, "
557 "aborting.\n", status);
558 err = -EINVAL;
559 goto err_free_icm;
560 }
561
562 err = mthca_QUERY_ADAPTER(mdev, &adapter, &status);
563 if (err) {
564 mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n");
565 goto err_free_icm;
566 }
567 if (status) {
568 mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, "
569 "aborting.\n", status);
570 err = -EINVAL;
571 goto err_free_icm;
572 }
573
574 mdev->eq_table.inta_pin = adapter.inta_pin;
575 mdev->rev_id = adapter.revision_id;
576
577 return 0;
578
579 err_free_icm:
580 mthca_free_icm_table(mdev, mdev->cq_table.table);
581 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
582 mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
583 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
584 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
585 mthca_unmap_eq_icm(mdev);
586
587 mthca_UNMAP_ICM_AUX(mdev, &status);
588 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm);
589
590 err_stop_fw:
591 mthca_UNMAP_FA(mdev, &status);
592 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
593
594 err_disable:
595 if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM))
596 mthca_DISABLE_LAM(mdev, &status);
597
598 return err;
599 }
600
601 static int __devinit mthca_init_hca(struct mthca_dev *mdev)
602 {
603 if (mdev->hca_type == ARBEL_NATIVE)
604 return mthca_init_arbel(mdev);
605 else
606 return mthca_init_tavor(mdev);
607 }
608
609 static int __devinit mthca_setup_hca(struct mthca_dev *dev)
610 {
611 int err;
612 u8 status;
613
614 MTHCA_INIT_DOORBELL_LOCK(&dev->doorbell_lock);
615
616 err = mthca_init_uar_table(dev);
617 if (err) {
618 mthca_err(dev, "Failed to initialize "
619 "user access region table, aborting.\n");
620 return err;
621 }
622
623 err = mthca_uar_alloc(dev, &dev->driver_uar);
624 if (err) {
625 mthca_err(dev, "Failed to allocate driver access region, "
626 "aborting.\n");
627 goto err_uar_table_free;
628 }
629
630 dev->kar = ioremap(dev->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
631 if (!dev->kar) {
632 mthca_err(dev, "Couldn't map kernel access region, "
633 "aborting.\n");
634 err = -ENOMEM;
635 goto err_uar_free;
636 }
637
638 err = mthca_init_pd_table(dev);
639 if (err) {
640 mthca_err(dev, "Failed to initialize "
641 "protection domain table, aborting.\n");
642 goto err_kar_unmap;
643 }
644
645 err = mthca_init_mr_table(dev);
646 if (err) {
647 mthca_err(dev, "Failed to initialize "
648 "memory region table, aborting.\n");
649 goto err_pd_table_free;
650 }
651
652 err = mthca_pd_alloc(dev, &dev->driver_pd);
653 if (err) {
654 mthca_err(dev, "Failed to create driver PD, "
655 "aborting.\n");
656 goto err_mr_table_free;
657 }
658
659 err = mthca_init_eq_table(dev);
660 if (err) {
661 mthca_err(dev, "Failed to initialize "
662 "event queue table, aborting.\n");
663 goto err_pd_free;
664 }
665
666 err = mthca_cmd_use_events(dev);
667 if (err) {
668 mthca_err(dev, "Failed to switch to event-driven "
669 "firmware commands, aborting.\n");
670 goto err_eq_table_free;
671 }
672
673 err = mthca_NOP(dev, &status);
674 if (err || status) {
675 mthca_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting.\n",
676 dev->mthca_flags & MTHCA_FLAG_MSI_X ?
677 dev->eq_table.eq[MTHCA_EQ_CMD].msi_x_vector :
678 dev->pdev->irq);
679 if (dev->mthca_flags & (MTHCA_FLAG_MSI | MTHCA_FLAG_MSI_X))
680 mthca_err(dev, "Try again with MSI/MSI-X disabled.\n");
681 else
682 mthca_err(dev, "BIOS or ACPI interrupt routing problem?\n");
683
684 goto err_cmd_poll;
685 }
686
687 mthca_dbg(dev, "NOP command IRQ test passed\n");
688
689 err = mthca_init_cq_table(dev);
690 if (err) {
691 mthca_err(dev, "Failed to initialize "
692 "completion queue table, aborting.\n");
693 goto err_cmd_poll;
694 }
695
696 err = mthca_init_qp_table(dev);
697 if (err) {
698 mthca_err(dev, "Failed to initialize "
699 "queue pair table, aborting.\n");
700 goto err_cq_table_free;
701 }
702
703 err = mthca_init_av_table(dev);
704 if (err) {
705 mthca_err(dev, "Failed to initialize "
706 "address vector table, aborting.\n");
707 goto err_qp_table_free;
708 }
709
710 err = mthca_init_mcg_table(dev);
711 if (err) {
712 mthca_err(dev, "Failed to initialize "
713 "multicast group table, aborting.\n");
714 goto err_av_table_free;
715 }
716
717 return 0;
718
719 err_av_table_free:
720 mthca_cleanup_av_table(dev);
721
722 err_qp_table_free:
723 mthca_cleanup_qp_table(dev);
724
725 err_cq_table_free:
726 mthca_cleanup_cq_table(dev);
727
728 err_cmd_poll:
729 mthca_cmd_use_polling(dev);
730
731 err_eq_table_free:
732 mthca_cleanup_eq_table(dev);
733
734 err_pd_free:
735 mthca_pd_free(dev, &dev->driver_pd);
736
737 err_mr_table_free:
738 mthca_cleanup_mr_table(dev);
739
740 err_pd_table_free:
741 mthca_cleanup_pd_table(dev);
742
743 err_kar_unmap:
744 iounmap(dev->kar);
745
746 err_uar_free:
747 mthca_uar_free(dev, &dev->driver_uar);
748
749 err_uar_table_free:
750 mthca_cleanup_uar_table(dev);
751 return err;
752 }
753
754 static int __devinit mthca_request_regions(struct pci_dev *pdev,
755 int ddr_hidden)
756 {
757 int err;
758
759 /*
760 * We can't just use pci_request_regions() because the MSI-X
761 * table is right in the middle of the first BAR. If we did
762 * pci_request_region and grab all of the first BAR, then
763 * setting up MSI-X would fail, since the PCI core wants to do
764 * request_mem_region on the MSI-X vector table.
765 *
766 * So just request what we need right now, and request any
767 * other regions we need when setting up EQs.
768 */
769 if (!request_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE,
770 MTHCA_HCR_SIZE, DRV_NAME))
771 return -EBUSY;
772
773 err = pci_request_region(pdev, 2, DRV_NAME);
774 if (err)
775 goto err_bar2_failed;
776
777 if (!ddr_hidden) {
778 err = pci_request_region(pdev, 4, DRV_NAME);
779 if (err)
780 goto err_bar4_failed;
781 }
782
783 return 0;
784
785 err_bar4_failed:
786 pci_release_region(pdev, 2);
787
788 err_bar2_failed:
789 release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE,
790 MTHCA_HCR_SIZE);
791
792 return err;
793 }
794
795 static void mthca_release_regions(struct pci_dev *pdev,
796 int ddr_hidden)
797 {
798 if (!ddr_hidden)
799 pci_release_region(pdev, 4);
800
801 pci_release_region(pdev, 2);
802
803 release_mem_region(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE,
804 MTHCA_HCR_SIZE);
805 }
806
807 static int __devinit mthca_enable_msi_x(struct mthca_dev *mdev)
808 {
809 struct msix_entry entries[3];
810 int err;
811
812 entries[0].entry = 0;
813 entries[1].entry = 1;
814 entries[2].entry = 2;
815
816 err = pci_enable_msix(mdev->pdev, entries, ARRAY_SIZE(entries));
817 if (err) {
818 if (err > 0)
819 mthca_info(mdev, "Only %d MSI-X vectors available, "
820 "not using MSI-X\n", err);
821 return err;
822 }
823
824 mdev->eq_table.eq[MTHCA_EQ_COMP ].msi_x_vector = entries[0].vector;
825 mdev->eq_table.eq[MTHCA_EQ_ASYNC].msi_x_vector = entries[1].vector;
826 mdev->eq_table.eq[MTHCA_EQ_CMD ].msi_x_vector = entries[2].vector;
827
828 return 0;
829 }
830
831 static void mthca_close_hca(struct mthca_dev *mdev)
832 {
833 u8 status;
834
835 mthca_CLOSE_HCA(mdev, 0, &status);
836
837 if (mdev->hca_type == ARBEL_NATIVE) {
838 mthca_free_icm_table(mdev, mdev->cq_table.table);
839 mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
840 mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
841 mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
842 mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
843 mthca_unmap_eq_icm(mdev);
844
845 mthca_UNMAP_ICM_AUX(mdev, &status);
846 mthca_free_icm(mdev, mdev->fw.arbel.aux_icm);
847
848 mthca_UNMAP_FA(mdev, &status);
849 mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
850
851 if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM))
852 mthca_DISABLE_LAM(mdev, &status);
853 } else
854 mthca_SYS_DIS(mdev, &status);
855 }
856
857 static int __devinit mthca_init_one(struct pci_dev *pdev,
858 const struct pci_device_id *id)
859 {
860 static int mthca_version_printed = 0;
861 static int mthca_memfree_warned = 0;
862 int ddr_hidden = 0;
863 int err;
864 struct mthca_dev *mdev;
865
866 if (!mthca_version_printed) {
867 printk(KERN_INFO "%s", mthca_version);
868 ++mthca_version_printed;
869 }
870
871 printk(KERN_INFO PFX "Initializing %s (%s)\n",
872 pci_pretty_name(pdev), pci_name(pdev));
873
874 err = pci_enable_device(pdev);
875 if (err) {
876 dev_err(&pdev->dev, "Cannot enable PCI device, "
877 "aborting.\n");
878 return err;
879 }
880
881 /*
882 * Check for BARs. We expect 0: 1MB, 2: 8MB, 4: DDR (may not
883 * be present)
884 */
885 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
886 pci_resource_len(pdev, 0) != 1 << 20) {
887 dev_err(&pdev->dev, "Missing DCS, aborting.");
888 err = -ENODEV;
889 goto err_disable_pdev;
890 }
891 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM) ||
892 pci_resource_len(pdev, 2) != 1 << 23) {
893 dev_err(&pdev->dev, "Missing UAR, aborting.");
894 err = -ENODEV;
895 goto err_disable_pdev;
896 }
897 if (!(pci_resource_flags(pdev, 4) & IORESOURCE_MEM))
898 ddr_hidden = 1;
899
900 err = mthca_request_regions(pdev, ddr_hidden);
901 if (err) {
902 dev_err(&pdev->dev, "Cannot obtain PCI resources, "
903 "aborting.\n");
904 goto err_disable_pdev;
905 }
906
907 pci_set_master(pdev);
908
909 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
910 if (err) {
911 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
912 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
913 if (err) {
914 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
915 goto err_free_res;
916 }
917 }
918 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
919 if (err) {
920 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
921 "consistent PCI DMA mask.\n");
922 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
923 if (err) {
924 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
925 "aborting.\n");
926 goto err_free_res;
927 }
928 }
929
930 mdev = (struct mthca_dev *) ib_alloc_device(sizeof *mdev);
931 if (!mdev) {
932 dev_err(&pdev->dev, "Device struct alloc failed, "
933 "aborting.\n");
934 err = -ENOMEM;
935 goto err_free_res;
936 }
937
938 mdev->pdev = pdev;
939 mdev->hca_type = id->driver_data;
940
941 if (mdev->hca_type == ARBEL_NATIVE && !mthca_memfree_warned++)
942 mthca_warn(mdev, "Warning: native MT25208 mode support is incomplete. "
943 "Your HCA may not work properly.\n");
944
945 if (ddr_hidden)
946 mdev->mthca_flags |= MTHCA_FLAG_DDR_HIDDEN;
947
948 /*
949 * Now reset the HCA before we touch the PCI capabilities or
950 * attempt a firmware command, since a boot ROM may have left
951 * the HCA in an undefined state.
952 */
953 err = mthca_reset(mdev);
954 if (err) {
955 mthca_err(mdev, "Failed to reset HCA, aborting.\n");
956 goto err_free_dev;
957 }
958
959 if (msi_x && !mthca_enable_msi_x(mdev))
960 mdev->mthca_flags |= MTHCA_FLAG_MSI_X;
961 if (msi && !(mdev->mthca_flags & MTHCA_FLAG_MSI_X) &&
962 !pci_enable_msi(pdev))
963 mdev->mthca_flags |= MTHCA_FLAG_MSI;
964
965 sema_init(&mdev->cmd.hcr_sem, 1);
966 sema_init(&mdev->cmd.poll_sem, 1);
967 mdev->cmd.use_events = 0;
968
969 mdev->hcr = ioremap(pci_resource_start(pdev, 0) + MTHCA_HCR_BASE, MTHCA_HCR_SIZE);
970 if (!mdev->hcr) {
971 mthca_err(mdev, "Couldn't map command register, "
972 "aborting.\n");
973 err = -ENOMEM;
974 goto err_free_dev;
975 }
976
977 err = mthca_tune_pci(mdev);
978 if (err)
979 goto err_iounmap;
980
981 err = mthca_init_hca(mdev);
982 if (err)
983 goto err_iounmap;
984
985 err = mthca_setup_hca(mdev);
986 if (err)
987 goto err_close;
988
989 err = mthca_register_device(mdev);
990 if (err)
991 goto err_cleanup;
992
993 err = mthca_create_agents(mdev);
994 if (err)
995 goto err_unregister;
996
997 pci_set_drvdata(pdev, mdev);
998
999 return 0;
1000
1001 err_unregister:
1002 mthca_unregister_device(mdev);
1003
1004 err_cleanup:
1005 mthca_cleanup_mcg_table(mdev);
1006 mthca_cleanup_av_table(mdev);
1007 mthca_cleanup_qp_table(mdev);
1008 mthca_cleanup_cq_table(mdev);
1009 mthca_cmd_use_polling(mdev);
1010 mthca_cleanup_eq_table(mdev);
1011
1012 mthca_pd_free(mdev, &mdev->driver_pd);
1013
1014 mthca_cleanup_mr_table(mdev);
1015 mthca_cleanup_pd_table(mdev);
1016 mthca_cleanup_uar_table(mdev);
1017
1018 err_close:
1019 mthca_close_hca(mdev);
1020
1021 err_iounmap:
1022 iounmap(mdev->hcr);
1023
1024 err_free_dev:
1025 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
1026 pci_disable_msix(pdev);
1027 if (mdev->mthca_flags & MTHCA_FLAG_MSI)
1028 pci_disable_msi(pdev);
1029
1030 ib_dealloc_device(&mdev->ib_dev);
1031
1032 err_free_res:
1033 mthca_release_regions(pdev, ddr_hidden);
1034
1035 err_disable_pdev:
1036 pci_disable_device(pdev);
1037 pci_set_drvdata(pdev, NULL);
1038 return err;
1039 }
1040
1041 static void __devexit mthca_remove_one(struct pci_dev *pdev)
1042 {
1043 struct mthca_dev *mdev = pci_get_drvdata(pdev);
1044 u8 status;
1045 int p;
1046
1047 if (mdev) {
1048 mthca_free_agents(mdev);
1049 mthca_unregister_device(mdev);
1050
1051 for (p = 1; p <= mdev->limits.num_ports; ++p)
1052 mthca_CLOSE_IB(mdev, p, &status);
1053
1054 mthca_cleanup_mcg_table(mdev);
1055 mthca_cleanup_av_table(mdev);
1056 mthca_cleanup_qp_table(mdev);
1057 mthca_cleanup_cq_table(mdev);
1058 mthca_cmd_use_polling(mdev);
1059 mthca_cleanup_eq_table(mdev);
1060
1061 mthca_pd_free(mdev, &mdev->driver_pd);
1062
1063 mthca_cleanup_mr_table(mdev);
1064 mthca_cleanup_pd_table(mdev);
1065
1066 iounmap(mdev->kar);
1067 mthca_uar_free(mdev, &mdev->driver_uar);
1068 mthca_cleanup_uar_table(mdev);
1069
1070 mthca_close_hca(mdev);
1071
1072 iounmap(mdev->hcr);
1073
1074 if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
1075 pci_disable_msix(pdev);
1076 if (mdev->mthca_flags & MTHCA_FLAG_MSI)
1077 pci_disable_msi(pdev);
1078
1079 ib_dealloc_device(&mdev->ib_dev);
1080 mthca_release_regions(pdev, mdev->mthca_flags &
1081 MTHCA_FLAG_DDR_HIDDEN);
1082 pci_disable_device(pdev);
1083 pci_set_drvdata(pdev, NULL);
1084 }
1085 }
1086
1087 static struct pci_device_id mthca_pci_table[] = {
1088 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR),
1089 .driver_data = TAVOR },
1090 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_TAVOR),
1091 .driver_data = TAVOR },
1092 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT),
1093 .driver_data = ARBEL_COMPAT },
1094 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT),
1095 .driver_data = ARBEL_COMPAT },
1096 { PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL),
1097 .driver_data = ARBEL_NATIVE },
1098 { PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL),
1099 .driver_data = ARBEL_NATIVE },
1100 { 0, }
1101 };
1102
1103 MODULE_DEVICE_TABLE(pci, mthca_pci_table);
1104
1105 static struct pci_driver mthca_driver = {
1106 .name = "ib_mthca",
1107 .id_table = mthca_pci_table,
1108 .probe = mthca_init_one,
1109 .remove = __devexit_p(mthca_remove_one)
1110 };
1111
1112 static int __init mthca_init(void)
1113 {
1114 int ret;
1115
1116 ret = pci_register_driver(&mthca_driver);
1117 return ret < 0 ? ret : 0;
1118 }
1119
1120 static void __exit mthca_cleanup(void)
1121 {
1122 pci_unregister_driver(&mthca_driver);
1123 }
1124
1125 module_init(mthca_init);
1126 module_exit(mthca_cleanup);
linux kernel for loongson