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  *
6  * This software is available to you under a choice of one of two
7  * licenses.  You may choose to be licensed under the terms of the GNU
8  * General Public License (GPL) Version 2, available from the file
9  * COPYING in the main directory of this source tree, or the
10  * OpenIB.org BSD license below:
11  *
12  *     Redistribution and use in source and binary forms, with or
13  *     without modification, are permitted provided that the following
14  *     conditions are met:
15  *
16  *      - Redistributions of source code must retain the above
17  *        copyright notice, this list of conditions and the following
18  *        disclaimer.
19  *
20  *      - Redistributions in binary form must reproduce the above
21  *        copyright notice, this list of conditions and the following
22  *        disclaimer in the documentation and/or other materials
23  *        provided with the distribution.
24  *
25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32  * SOFTWARE.
33  */
34 
35 #include <linux/module.h>
36 #include <linux/init.h>
37 #include <linux/errno.h>
38 #include <linux/pci.h>
39 #include <linux/interrupt.h>
40 #include <linux/gfp.h>
41 
42 #include "mthca_dev.h"
43 #include "mthca_config_reg.h"
44 #include "mthca_cmd.h"
45 #include "mthca_profile.h"
46 #include "mthca_memfree.h"
47 #include "mthca_wqe.h"
48 
49 MODULE_AUTHOR("Roland Dreier");
50 MODULE_DESCRIPTION("Mellanox InfiniBand HCA low-level driver");
51 MODULE_LICENSE("Dual BSD/GPL");
52 
53 #ifdef CONFIG_INFINIBAND_MTHCA_DEBUG
54 
55 int mthca_debug_level = 0;
56 module_param_named(debug_level, mthca_debug_level, int, 0644);
57 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
58 
59 #endif /* CONFIG_INFINIBAND_MTHCA_DEBUG */
60 
61 #ifdef CONFIG_PCI_MSI
62 
63 static int msi_x = 1;
64 module_param(msi_x, int, 0444);
65 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
66 
67 #else /* CONFIG_PCI_MSI */
68 
69 #define msi_x (0)
70 
71 #endif /* CONFIG_PCI_MSI */
72 
73 static int tune_pci = 0;
74 module_param(tune_pci, int, 0444);
75 MODULE_PARM_DESC(tune_pci, "increase PCI burst from the default set by BIOS if nonzero");
76 
77 DEFINE_MUTEX(mthca_device_mutex);
78 
79 #define MTHCA_DEFAULT_NUM_QP            (1 << 16)
80 #define MTHCA_DEFAULT_RDB_PER_QP        (1 << 2)
81 #define MTHCA_DEFAULT_NUM_CQ            (1 << 16)
82 #define MTHCA_DEFAULT_NUM_MCG           (1 << 13)
83 #define MTHCA_DEFAULT_NUM_MPT           (1 << 17)
84 #define MTHCA_DEFAULT_NUM_MTT           (1 << 20)
85 #define MTHCA_DEFAULT_NUM_UDAV          (1 << 15)
86 #define MTHCA_DEFAULT_NUM_RESERVED_MTTS (1 << 18)
87 #define MTHCA_DEFAULT_NUM_UARC_SIZE     (1 << 18)
88 
89 static struct mthca_profile hca_profile = {
90 	.num_qp             = MTHCA_DEFAULT_NUM_QP,
91 	.rdb_per_qp         = MTHCA_DEFAULT_RDB_PER_QP,
92 	.num_cq             = MTHCA_DEFAULT_NUM_CQ,
93 	.num_mcg            = MTHCA_DEFAULT_NUM_MCG,
94 	.num_mpt            = MTHCA_DEFAULT_NUM_MPT,
95 	.num_mtt            = MTHCA_DEFAULT_NUM_MTT,
96 	.num_udav           = MTHCA_DEFAULT_NUM_UDAV,          /* Tavor only */
97 	.fmr_reserved_mtts  = MTHCA_DEFAULT_NUM_RESERVED_MTTS, /* Tavor only */
98 	.uarc_size          = MTHCA_DEFAULT_NUM_UARC_SIZE,     /* Arbel only */
99 };
100 
101 module_param_named(num_qp, hca_profile.num_qp, int, 0444);
102 MODULE_PARM_DESC(num_qp, "maximum number of QPs per HCA");
103 
104 module_param_named(rdb_per_qp, hca_profile.rdb_per_qp, int, 0444);
105 MODULE_PARM_DESC(rdb_per_qp, "number of RDB buffers per QP");
106 
107 module_param_named(num_cq, hca_profile.num_cq, int, 0444);
108 MODULE_PARM_DESC(num_cq, "maximum number of CQs per HCA");
109 
110 module_param_named(num_mcg, hca_profile.num_mcg, int, 0444);
111 MODULE_PARM_DESC(num_mcg, "maximum number of multicast groups per HCA");
112 
113 module_param_named(num_mpt, hca_profile.num_mpt, int, 0444);
114 MODULE_PARM_DESC(num_mpt,
115 		"maximum number of memory protection table entries per HCA");
116 
117 module_param_named(num_mtt, hca_profile.num_mtt, int, 0444);
118 MODULE_PARM_DESC(num_mtt,
119 		 "maximum number of memory translation table segments per HCA");
120 
121 module_param_named(num_udav, hca_profile.num_udav, int, 0444);
122 MODULE_PARM_DESC(num_udav, "maximum number of UD address vectors per HCA");
123 
124 module_param_named(fmr_reserved_mtts, hca_profile.fmr_reserved_mtts, int, 0444);
125 MODULE_PARM_DESC(fmr_reserved_mtts,
126 		 "number of memory translation table segments reserved for FMR");
127 
128 static int log_mtts_per_seg = ilog2(MTHCA_MTT_SEG_SIZE / 8);
129 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
130 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-5)");
131 
132 static char mthca_version[] =
133 	DRV_NAME ": Mellanox InfiniBand HCA driver v"
134 	DRV_VERSION " (" DRV_RELDATE ")\n";
135 
mthca_tune_pci(struct mthca_dev * mdev)136 static int mthca_tune_pci(struct mthca_dev *mdev)
137 {
138 	if (!tune_pci)
139 		return 0;
140 
141 	/* First try to max out Read Byte Count */
142 	if (pci_find_capability(mdev->pdev, PCI_CAP_ID_PCIX)) {
143 		if (pcix_set_mmrbc(mdev->pdev, pcix_get_max_mmrbc(mdev->pdev))) {
144 			mthca_err(mdev, "Couldn't set PCI-X max read count, "
145 				"aborting.\n");
146 			return -ENODEV;
147 		}
148 	} else if (!(mdev->mthca_flags & MTHCA_FLAG_PCIE))
149 		mthca_info(mdev, "No PCI-X capability, not setting RBC.\n");
150 
151 	if (pci_is_pcie(mdev->pdev)) {
152 		if (pcie_set_readrq(mdev->pdev, 4096)) {
153 			mthca_err(mdev, "Couldn't write PCI Express read request, "
154 				"aborting.\n");
155 			return -ENODEV;
156 		}
157 	} else if (mdev->mthca_flags & MTHCA_FLAG_PCIE)
158 		mthca_info(mdev, "No PCI Express capability, "
159 			   "not setting Max Read Request Size.\n");
160 
161 	return 0;
162 }
163 
mthca_dev_lim(struct mthca_dev * mdev,struct mthca_dev_lim * dev_lim)164 static int mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim *dev_lim)
165 {
166 	int err;
167 
168 	mdev->limits.mtt_seg_size = (1 << log_mtts_per_seg) * 8;
169 	err = mthca_QUERY_DEV_LIM(mdev, dev_lim);
170 	if (err) {
171 		mthca_err(mdev, "QUERY_DEV_LIM command returned %d"
172 				", aborting.\n", err);
173 		return err;
174 	}
175 	if (dev_lim->min_page_sz > PAGE_SIZE) {
176 		mthca_err(mdev, "HCA minimum page size of %d bigger than "
177 			  "kernel PAGE_SIZE of %ld, aborting.\n",
178 			  dev_lim->min_page_sz, PAGE_SIZE);
179 		return -ENODEV;
180 	}
181 	if (dev_lim->num_ports > MTHCA_MAX_PORTS) {
182 		mthca_err(mdev, "HCA has %d ports, but we only support %d, "
183 			  "aborting.\n",
184 			  dev_lim->num_ports, MTHCA_MAX_PORTS);
185 		return -ENODEV;
186 	}
187 
188 	if (dev_lim->uar_size > pci_resource_len(mdev->pdev, 2)) {
189 		mthca_err(mdev, "HCA reported UAR size of 0x%x bigger than "
190 			  "PCI resource 2 size of 0x%llx, aborting.\n",
191 			  dev_lim->uar_size,
192 			  (unsigned long long)pci_resource_len(mdev->pdev, 2));
193 		return -ENODEV;
194 	}
195 
196 	mdev->limits.num_ports      	= dev_lim->num_ports;
197 	mdev->limits.vl_cap             = dev_lim->max_vl;
198 	mdev->limits.mtu_cap            = dev_lim->max_mtu;
199 	mdev->limits.gid_table_len  	= dev_lim->max_gids;
200 	mdev->limits.pkey_table_len 	= dev_lim->max_pkeys;
201 	mdev->limits.local_ca_ack_delay = dev_lim->local_ca_ack_delay;
202 	/*
203 	 * Need to allow for worst case send WQE overhead and check
204 	 * whether max_desc_sz imposes a lower limit than max_sg; UD
205 	 * send has the biggest overhead.
206 	 */
207 	mdev->limits.max_sg		= min_t(int, dev_lim->max_sg,
208 					      (dev_lim->max_desc_sz -
209 					       sizeof (struct mthca_next_seg) -
210 					       (mthca_is_memfree(mdev) ?
211 						sizeof (struct mthca_arbel_ud_seg) :
212 						sizeof (struct mthca_tavor_ud_seg))) /
213 						sizeof (struct mthca_data_seg));
214 	mdev->limits.max_wqes           = dev_lim->max_qp_sz;
215 	mdev->limits.max_qp_init_rdma   = dev_lim->max_requester_per_qp;
216 	mdev->limits.reserved_qps       = dev_lim->reserved_qps;
217 	mdev->limits.max_srq_wqes       = dev_lim->max_srq_sz;
218 	mdev->limits.reserved_srqs      = dev_lim->reserved_srqs;
219 	mdev->limits.reserved_eecs      = dev_lim->reserved_eecs;
220 	mdev->limits.max_desc_sz        = dev_lim->max_desc_sz;
221 	mdev->limits.max_srq_sge	= mthca_max_srq_sge(mdev);
222 	/*
223 	 * Subtract 1 from the limit because we need to allocate a
224 	 * spare CQE so the HCA HW can tell the difference between an
225 	 * empty CQ and a full CQ.
226 	 */
227 	mdev->limits.max_cqes           = dev_lim->max_cq_sz - 1;
228 	mdev->limits.reserved_cqs       = dev_lim->reserved_cqs;
229 	mdev->limits.reserved_eqs       = dev_lim->reserved_eqs;
230 	mdev->limits.reserved_mtts      = dev_lim->reserved_mtts;
231 	mdev->limits.reserved_mrws      = dev_lim->reserved_mrws;
232 	mdev->limits.reserved_uars      = dev_lim->reserved_uars;
233 	mdev->limits.reserved_pds       = dev_lim->reserved_pds;
234 	mdev->limits.port_width_cap     = dev_lim->max_port_width;
235 	mdev->limits.page_size_cap      = ~(u32) (dev_lim->min_page_sz - 1);
236 	mdev->limits.flags              = dev_lim->flags;
237 	/*
238 	 * For old FW that doesn't return static rate support, use a
239 	 * value of 0x3 (only static rate values of 0 or 1 are handled),
240 	 * except on Sinai, where even old FW can handle static rate
241 	 * values of 2 and 3.
242 	 */
243 	if (dev_lim->stat_rate_support)
244 		mdev->limits.stat_rate_support = dev_lim->stat_rate_support;
245 	else if (mdev->mthca_flags & MTHCA_FLAG_SINAI_OPT)
246 		mdev->limits.stat_rate_support = 0xf;
247 	else
248 		mdev->limits.stat_rate_support = 0x3;
249 
250 	/* IB_DEVICE_RESIZE_MAX_WR not supported by driver.
251 	   May be doable since hardware supports it for SRQ.
252 
253 	   IB_DEVICE_N_NOTIFY_CQ is supported by hardware but not by driver.
254 
255 	   IB_DEVICE_SRQ_RESIZE is supported by hardware but SRQ is not
256 	   supported by driver. */
257 	mdev->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
258 		IB_DEVICE_PORT_ACTIVE_EVENT |
259 		IB_DEVICE_SYS_IMAGE_GUID |
260 		IB_DEVICE_RC_RNR_NAK_GEN;
261 
262 	if (dev_lim->flags & DEV_LIM_FLAG_BAD_PKEY_CNTR)
263 		mdev->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
264 
265 	if (dev_lim->flags & DEV_LIM_FLAG_BAD_QKEY_CNTR)
266 		mdev->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
267 
268 	if (dev_lim->flags & DEV_LIM_FLAG_RAW_MULTI)
269 		mdev->device_cap_flags |= IB_DEVICE_RAW_MULTI;
270 
271 	if (dev_lim->flags & DEV_LIM_FLAG_AUTO_PATH_MIG)
272 		mdev->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
273 
274 	if (dev_lim->flags & DEV_LIM_FLAG_UD_AV_PORT_ENFORCE)
275 		mdev->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
276 
277 	if (dev_lim->flags & DEV_LIM_FLAG_SRQ)
278 		mdev->mthca_flags |= MTHCA_FLAG_SRQ;
279 
280 	if (mthca_is_memfree(mdev))
281 		if (dev_lim->flags & DEV_LIM_FLAG_IPOIB_CSUM)
282 			mdev->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
283 
284 	return 0;
285 }
286 
mthca_init_tavor(struct mthca_dev * mdev)287 static int mthca_init_tavor(struct mthca_dev *mdev)
288 {
289 	s64 size;
290 	int err;
291 	struct mthca_dev_lim        dev_lim;
292 	struct mthca_profile        profile;
293 	struct mthca_init_hca_param init_hca;
294 
295 	err = mthca_SYS_EN(mdev);
296 	if (err) {
297 		mthca_err(mdev, "SYS_EN command returned %d, aborting.\n", err);
298 		return err;
299 	}
300 
301 	err = mthca_QUERY_FW(mdev);
302 	if (err) {
303 		mthca_err(mdev, "QUERY_FW command returned %d,"
304 				" aborting.\n", err);
305 		goto err_disable;
306 	}
307 	err = mthca_QUERY_DDR(mdev);
308 	if (err) {
309 		mthca_err(mdev, "QUERY_DDR command returned %d, aborting.\n", err);
310 		goto err_disable;
311 	}
312 
313 	err = mthca_dev_lim(mdev, &dev_lim);
314 	if (err) {
315 		mthca_err(mdev, "QUERY_DEV_LIM command returned %d, aborting.\n", err);
316 		goto err_disable;
317 	}
318 
319 	profile = hca_profile;
320 	profile.num_uar   = dev_lim.uar_size / PAGE_SIZE;
321 	profile.uarc_size = 0;
322 	if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
323 		profile.num_srq = dev_lim.max_srqs;
324 
325 	size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
326 	if (size < 0) {
327 		err = size;
328 		goto err_disable;
329 	}
330 
331 	err = mthca_INIT_HCA(mdev, &init_hca);
332 	if (err) {
333 		mthca_err(mdev, "INIT_HCA command returned %d, aborting.\n", err);
334 		goto err_disable;
335 	}
336 
337 	return 0;
338 
339 err_disable:
340 	mthca_SYS_DIS(mdev);
341 
342 	return err;
343 }
344 
mthca_load_fw(struct mthca_dev * mdev)345 static int mthca_load_fw(struct mthca_dev *mdev)
346 {
347 	int err;
348 
349 	/* FIXME: use HCA-attached memory for FW if present */
350 
351 	mdev->fw.arbel.fw_icm =
352 		mthca_alloc_icm(mdev, mdev->fw.arbel.fw_pages,
353 				GFP_HIGHUSER | __GFP_NOWARN, 0);
354 	if (!mdev->fw.arbel.fw_icm) {
355 		mthca_err(mdev, "Couldn't allocate FW area, aborting.\n");
356 		return -ENOMEM;
357 	}
358 
359 	err = mthca_MAP_FA(mdev, mdev->fw.arbel.fw_icm);
360 	if (err) {
361 		mthca_err(mdev, "MAP_FA command returned %d, aborting.\n", err);
362 		goto err_free;
363 	}
364 	err = mthca_RUN_FW(mdev);
365 	if (err) {
366 		mthca_err(mdev, "RUN_FW command returned %d, aborting.\n", err);
367 		goto err_unmap_fa;
368 	}
369 
370 	return 0;
371 
372 err_unmap_fa:
373 	mthca_UNMAP_FA(mdev);
374 
375 err_free:
376 	mthca_free_icm(mdev, mdev->fw.arbel.fw_icm, 0);
377 	return err;
378 }
379 
mthca_init_icm(struct mthca_dev * mdev,struct mthca_dev_lim * dev_lim,struct mthca_init_hca_param * init_hca,u64 icm_size)380 static int mthca_init_icm(struct mthca_dev *mdev,
381 			  struct mthca_dev_lim *dev_lim,
382 			  struct mthca_init_hca_param *init_hca,
383 			  u64 icm_size)
384 {
385 	u64 aux_pages = 0;
386 	int err;
387 
388 	err = mthca_SET_ICM_SIZE(mdev, icm_size, &aux_pages);
389 	if (err) {
390 		mthca_err(mdev, "SET_ICM_SIZE command returned %d, aborting.\n", err);
391 		return err;
392 	}
393 
394 	mthca_dbg(mdev, "%lld KB of HCA context requires %lld KB aux memory.\n",
395 		  (unsigned long long) icm_size >> 10,
396 		  (unsigned long long) aux_pages << 2);
397 
398 	mdev->fw.arbel.aux_icm = mthca_alloc_icm(mdev, aux_pages,
399 						 GFP_HIGHUSER | __GFP_NOWARN, 0);
400 	if (!mdev->fw.arbel.aux_icm) {
401 		mthca_err(mdev, "Couldn't allocate aux memory, aborting.\n");
402 		return -ENOMEM;
403 	}
404 
405 	err = mthca_MAP_ICM_AUX(mdev, mdev->fw.arbel.aux_icm);
406 	if (err) {
407 		mthca_err(mdev, "MAP_ICM_AUX returned %d, aborting.\n", err);
408 		goto err_free_aux;
409 	}
410 
411 	err = mthca_map_eq_icm(mdev, init_hca->eqc_base);
412 	if (err) {
413 		mthca_err(mdev, "Failed to map EQ context memory, aborting.\n");
414 		goto err_unmap_aux;
415 	}
416 
417 	/* CPU writes to non-reserved MTTs, while HCA might DMA to reserved mtts */
418 	mdev->limits.reserved_mtts = ALIGN(mdev->limits.reserved_mtts * mdev->limits.mtt_seg_size,
419 					   dma_get_cache_alignment()) / mdev->limits.mtt_seg_size;
420 
421 	mdev->mr_table.mtt_table = mthca_alloc_icm_table(mdev, init_hca->mtt_base,
422 							 mdev->limits.mtt_seg_size,
423 							 mdev->limits.num_mtt_segs,
424 							 mdev->limits.reserved_mtts,
425 							 1, 0);
426 	if (!mdev->mr_table.mtt_table) {
427 		mthca_err(mdev, "Failed to map MTT context memory, aborting.\n");
428 		err = -ENOMEM;
429 		goto err_unmap_eq;
430 	}
431 
432 	mdev->mr_table.mpt_table = mthca_alloc_icm_table(mdev, init_hca->mpt_base,
433 							 dev_lim->mpt_entry_sz,
434 							 mdev->limits.num_mpts,
435 							 mdev->limits.reserved_mrws,
436 							 1, 1);
437 	if (!mdev->mr_table.mpt_table) {
438 		mthca_err(mdev, "Failed to map MPT context memory, aborting.\n");
439 		err = -ENOMEM;
440 		goto err_unmap_mtt;
441 	}
442 
443 	mdev->qp_table.qp_table = mthca_alloc_icm_table(mdev, init_hca->qpc_base,
444 							dev_lim->qpc_entry_sz,
445 							mdev->limits.num_qps,
446 							mdev->limits.reserved_qps,
447 							0, 0);
448 	if (!mdev->qp_table.qp_table) {
449 		mthca_err(mdev, "Failed to map QP context memory, aborting.\n");
450 		err = -ENOMEM;
451 		goto err_unmap_mpt;
452 	}
453 
454 	mdev->qp_table.eqp_table = mthca_alloc_icm_table(mdev, init_hca->eqpc_base,
455 							 dev_lim->eqpc_entry_sz,
456 							 mdev->limits.num_qps,
457 							 mdev->limits.reserved_qps,
458 							 0, 0);
459 	if (!mdev->qp_table.eqp_table) {
460 		mthca_err(mdev, "Failed to map EQP context memory, aborting.\n");
461 		err = -ENOMEM;
462 		goto err_unmap_qp;
463 	}
464 
465 	mdev->qp_table.rdb_table = mthca_alloc_icm_table(mdev, init_hca->rdb_base,
466 							 MTHCA_RDB_ENTRY_SIZE,
467 							 mdev->limits.num_qps <<
468 							 mdev->qp_table.rdb_shift, 0,
469 							 0, 0);
470 	if (!mdev->qp_table.rdb_table) {
471 		mthca_err(mdev, "Failed to map RDB context memory, aborting\n");
472 		err = -ENOMEM;
473 		goto err_unmap_eqp;
474 	}
475 
476 	mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base,
477 						     dev_lim->cqc_entry_sz,
478 						     mdev->limits.num_cqs,
479 						     mdev->limits.reserved_cqs,
480 						     0, 0);
481 	if (!mdev->cq_table.table) {
482 		mthca_err(mdev, "Failed to map CQ context memory, aborting.\n");
483 		err = -ENOMEM;
484 		goto err_unmap_rdb;
485 	}
486 
487 	if (mdev->mthca_flags & MTHCA_FLAG_SRQ) {
488 		mdev->srq_table.table =
489 			mthca_alloc_icm_table(mdev, init_hca->srqc_base,
490 					      dev_lim->srq_entry_sz,
491 					      mdev->limits.num_srqs,
492 					      mdev->limits.reserved_srqs,
493 					      0, 0);
494 		if (!mdev->srq_table.table) {
495 			mthca_err(mdev, "Failed to map SRQ context memory, "
496 				  "aborting.\n");
497 			err = -ENOMEM;
498 			goto err_unmap_cq;
499 		}
500 	}
501 
502 	/*
503 	 * It's not strictly required, but for simplicity just map the
504 	 * whole multicast group table now.  The table isn't very big
505 	 * and it's a lot easier than trying to track ref counts.
506 	 */
507 	mdev->mcg_table.table = mthca_alloc_icm_table(mdev, init_hca->mc_base,
508 						      MTHCA_MGM_ENTRY_SIZE,
509 						      mdev->limits.num_mgms +
510 						      mdev->limits.num_amgms,
511 						      mdev->limits.num_mgms +
512 						      mdev->limits.num_amgms,
513 						      0, 0);
514 	if (!mdev->mcg_table.table) {
515 		mthca_err(mdev, "Failed to map MCG context memory, aborting.\n");
516 		err = -ENOMEM;
517 		goto err_unmap_srq;
518 	}
519 
520 	return 0;
521 
522 err_unmap_srq:
523 	if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
524 		mthca_free_icm_table(mdev, mdev->srq_table.table);
525 
526 err_unmap_cq:
527 	mthca_free_icm_table(mdev, mdev->cq_table.table);
528 
529 err_unmap_rdb:
530 	mthca_free_icm_table(mdev, mdev->qp_table.rdb_table);
531 
532 err_unmap_eqp:
533 	mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
534 
535 err_unmap_qp:
536 	mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
537 
538 err_unmap_mpt:
539 	mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
540 
541 err_unmap_mtt:
542 	mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
543 
544 err_unmap_eq:
545 	mthca_unmap_eq_icm(mdev);
546 
547 err_unmap_aux:
548 	mthca_UNMAP_ICM_AUX(mdev);
549 
550 err_free_aux:
551 	mthca_free_icm(mdev, mdev->fw.arbel.aux_icm, 0);
552 
553 	return err;
554 }
555 
mthca_free_icms(struct mthca_dev * mdev)556 static void mthca_free_icms(struct mthca_dev *mdev)
557 {
558 
559 	mthca_free_icm_table(mdev, mdev->mcg_table.table);
560 	if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
561 		mthca_free_icm_table(mdev, mdev->srq_table.table);
562 	mthca_free_icm_table(mdev, mdev->cq_table.table);
563 	mthca_free_icm_table(mdev, mdev->qp_table.rdb_table);
564 	mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
565 	mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
566 	mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
567 	mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
568 	mthca_unmap_eq_icm(mdev);
569 
570 	mthca_UNMAP_ICM_AUX(mdev);
571 	mthca_free_icm(mdev, mdev->fw.arbel.aux_icm, 0);
572 }
573 
mthca_init_arbel(struct mthca_dev * mdev)574 static int mthca_init_arbel(struct mthca_dev *mdev)
575 {
576 	struct mthca_dev_lim        dev_lim;
577 	struct mthca_profile        profile;
578 	struct mthca_init_hca_param init_hca;
579 	s64 icm_size;
580 	int err;
581 
582 	err = mthca_QUERY_FW(mdev);
583 	if (err) {
584 		mthca_err(mdev, "QUERY_FW command failed %d, aborting.\n", err);
585 		return err;
586 	}
587 
588 	err = mthca_ENABLE_LAM(mdev);
589 	if (err == -EAGAIN) {
590 		mthca_dbg(mdev, "No HCA-attached memory (running in MemFree mode)\n");
591 		mdev->mthca_flags |= MTHCA_FLAG_NO_LAM;
592 	} else if (err) {
593 		mthca_err(mdev, "ENABLE_LAM returned %d, aborting.\n", err);
594 		return err;
595 	}
596 
597 	err = mthca_load_fw(mdev);
598 	if (err) {
599 		mthca_err(mdev, "Loading FW returned %d, aborting.\n", err);
600 		goto err_disable;
601 	}
602 
603 	err = mthca_dev_lim(mdev, &dev_lim);
604 	if (err) {
605 		mthca_err(mdev, "QUERY_DEV_LIM returned %d, aborting.\n", err);
606 		goto err_stop_fw;
607 	}
608 
609 	profile = hca_profile;
610 	profile.num_uar  = dev_lim.uar_size / PAGE_SIZE;
611 	profile.num_udav = 0;
612 	if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
613 		profile.num_srq = dev_lim.max_srqs;
614 
615 	icm_size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
616 	if (icm_size < 0) {
617 		err = icm_size;
618 		goto err_stop_fw;
619 	}
620 
621 	err = mthca_init_icm(mdev, &dev_lim, &init_hca, icm_size);
622 	if (err)
623 		goto err_stop_fw;
624 
625 	err = mthca_INIT_HCA(mdev, &init_hca);
626 	if (err) {
627 		mthca_err(mdev, "INIT_HCA command returned %d, aborting.\n", err);
628 		goto err_free_icm;
629 	}
630 
631 	return 0;
632 
633 err_free_icm:
634 	mthca_free_icms(mdev);
635 
636 err_stop_fw:
637 	mthca_UNMAP_FA(mdev);
638 	mthca_free_icm(mdev, mdev->fw.arbel.fw_icm, 0);
639 
640 err_disable:
641 	if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM))
642 		mthca_DISABLE_LAM(mdev);
643 
644 	return err;
645 }
646 
mthca_close_hca(struct mthca_dev * mdev)647 static void mthca_close_hca(struct mthca_dev *mdev)
648 {
649 	mthca_CLOSE_HCA(mdev, 0);
650 
651 	if (mthca_is_memfree(mdev)) {
652 		mthca_free_icms(mdev);
653 
654 		mthca_UNMAP_FA(mdev);
655 		mthca_free_icm(mdev, mdev->fw.arbel.fw_icm, 0);
656 
657 		if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM))
658 			mthca_DISABLE_LAM(mdev);
659 	} else
660 		mthca_SYS_DIS(mdev);
661 }
662 
mthca_init_hca(struct mthca_dev * mdev)663 static int mthca_init_hca(struct mthca_dev *mdev)
664 {
665 	int err;
666 	struct mthca_adapter adapter;
667 
668 	if (mthca_is_memfree(mdev))
669 		err = mthca_init_arbel(mdev);
670 	else
671 		err = mthca_init_tavor(mdev);
672 
673 	if (err)
674 		return err;
675 
676 	err = mthca_QUERY_ADAPTER(mdev, &adapter);
677 	if (err) {
678 		mthca_err(mdev, "QUERY_ADAPTER command returned %d, aborting.\n", err);
679 		goto err_close;
680 	}
681 
682 	mdev->eq_table.inta_pin = adapter.inta_pin;
683 	if (!mthca_is_memfree(mdev))
684 		mdev->rev_id = adapter.revision_id;
685 	memcpy(mdev->board_id, adapter.board_id, sizeof mdev->board_id);
686 
687 	return 0;
688 
689 err_close:
690 	mthca_close_hca(mdev);
691 	return err;
692 }
693 
mthca_setup_hca(struct mthca_dev * dev)694 static int mthca_setup_hca(struct mthca_dev *dev)
695 {
696 	int err;
697 
698 	MTHCA_INIT_DOORBELL_LOCK(&dev->doorbell_lock);
699 
700 	err = mthca_init_uar_table(dev);
701 	if (err) {
702 		mthca_err(dev, "Failed to initialize "
703 			  "user access region table, aborting.\n");
704 		return err;
705 	}
706 
707 	err = mthca_uar_alloc(dev, &dev->driver_uar);
708 	if (err) {
709 		mthca_err(dev, "Failed to allocate driver access region, "
710 			  "aborting.\n");
711 		goto err_uar_table_free;
712 	}
713 
714 	dev->kar = ioremap((phys_addr_t) dev->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
715 	if (!dev->kar) {
716 		mthca_err(dev, "Couldn't map kernel access region, "
717 			  "aborting.\n");
718 		err = -ENOMEM;
719 		goto err_uar_free;
720 	}
721 
722 	err = mthca_init_pd_table(dev);
723 	if (err) {
724 		mthca_err(dev, "Failed to initialize "
725 			  "protection domain table, aborting.\n");
726 		goto err_kar_unmap;
727 	}
728 
729 	err = mthca_init_mr_table(dev);
730 	if (err) {
731 		mthca_err(dev, "Failed to initialize "
732 			  "memory region table, aborting.\n");
733 		goto err_pd_table_free;
734 	}
735 
736 	err = mthca_pd_alloc(dev, 1, &dev->driver_pd);
737 	if (err) {
738 		mthca_err(dev, "Failed to create driver PD, "
739 			  "aborting.\n");
740 		goto err_mr_table_free;
741 	}
742 
743 	err = mthca_init_eq_table(dev);
744 	if (err) {
745 		mthca_err(dev, "Failed to initialize "
746 			  "event queue table, aborting.\n");
747 		goto err_pd_free;
748 	}
749 
750 	err = mthca_cmd_use_events(dev);
751 	if (err) {
752 		mthca_err(dev, "Failed to switch to event-driven "
753 			  "firmware commands, aborting.\n");
754 		goto err_eq_table_free;
755 	}
756 
757 	err = mthca_NOP(dev);
758 	if (err) {
759 		if (dev->mthca_flags & MTHCA_FLAG_MSI_X) {
760 			mthca_warn(dev, "NOP command failed to generate interrupt "
761 				   "(IRQ %d).\n",
762 				   dev->eq_table.eq[MTHCA_EQ_CMD].msi_x_vector);
763 			mthca_warn(dev, "Trying again with MSI-X disabled.\n");
764 		} else {
765 			mthca_err(dev, "NOP command failed to generate interrupt "
766 				  "(IRQ %d), aborting.\n",
767 				  dev->pdev->irq);
768 			mthca_err(dev, "BIOS or ACPI interrupt routing problem?\n");
769 		}
770 
771 		goto err_cmd_poll;
772 	}
773 
774 	mthca_dbg(dev, "NOP command IRQ test passed\n");
775 
776 	err = mthca_init_cq_table(dev);
777 	if (err) {
778 		mthca_err(dev, "Failed to initialize "
779 			  "completion queue table, aborting.\n");
780 		goto err_cmd_poll;
781 	}
782 
783 	err = mthca_init_srq_table(dev);
784 	if (err) {
785 		mthca_err(dev, "Failed to initialize "
786 			  "shared receive queue table, aborting.\n");
787 		goto err_cq_table_free;
788 	}
789 
790 	err = mthca_init_qp_table(dev);
791 	if (err) {
792 		mthca_err(dev, "Failed to initialize "
793 			  "queue pair table, aborting.\n");
794 		goto err_srq_table_free;
795 	}
796 
797 	err = mthca_init_av_table(dev);
798 	if (err) {
799 		mthca_err(dev, "Failed to initialize "
800 			  "address vector table, aborting.\n");
801 		goto err_qp_table_free;
802 	}
803 
804 	err = mthca_init_mcg_table(dev);
805 	if (err) {
806 		mthca_err(dev, "Failed to initialize "
807 			  "multicast group table, aborting.\n");
808 		goto err_av_table_free;
809 	}
810 
811 	return 0;
812 
813 err_av_table_free:
814 	mthca_cleanup_av_table(dev);
815 
816 err_qp_table_free:
817 	mthca_cleanup_qp_table(dev);
818 
819 err_srq_table_free:
820 	mthca_cleanup_srq_table(dev);
821 
822 err_cq_table_free:
823 	mthca_cleanup_cq_table(dev);
824 
825 err_cmd_poll:
826 	mthca_cmd_use_polling(dev);
827 
828 err_eq_table_free:
829 	mthca_cleanup_eq_table(dev);
830 
831 err_pd_free:
832 	mthca_pd_free(dev, &dev->driver_pd);
833 
834 err_mr_table_free:
835 	mthca_cleanup_mr_table(dev);
836 
837 err_pd_table_free:
838 	mthca_cleanup_pd_table(dev);
839 
840 err_kar_unmap:
841 	iounmap(dev->kar);
842 
843 err_uar_free:
844 	mthca_uar_free(dev, &dev->driver_uar);
845 
846 err_uar_table_free:
847 	mthca_cleanup_uar_table(dev);
848 	return err;
849 }
850 
mthca_enable_msi_x(struct mthca_dev * mdev)851 static int mthca_enable_msi_x(struct mthca_dev *mdev)
852 {
853 	int err;
854 
855 	err = pci_alloc_irq_vectors(mdev->pdev, 3, 3, PCI_IRQ_MSIX);
856 	if (err < 0)
857 		return err;
858 
859 	mdev->eq_table.eq[MTHCA_EQ_COMP ].msi_x_vector =
860 			pci_irq_vector(mdev->pdev, 0);
861 	mdev->eq_table.eq[MTHCA_EQ_ASYNC].msi_x_vector =
862 			pci_irq_vector(mdev->pdev, 1);
863 	mdev->eq_table.eq[MTHCA_EQ_CMD  ].msi_x_vector =
864 			pci_irq_vector(mdev->pdev, 2);
865 
866 	return 0;
867 }
868 
869 /* Types of supported HCA */
870 enum {
871 	TAVOR,			/* MT23108                        */
872 	ARBEL_COMPAT,		/* MT25208 in Tavor compat mode   */
873 	ARBEL_NATIVE,		/* MT25208 with extended features */
874 	SINAI			/* MT25204 */
875 };
876 
877 #define MTHCA_FW_VER(major, minor, subminor) \
878 	(((u64) (major) << 32) | ((u64) (minor) << 16) | (u64) (subminor))
879 
880 static struct {
881 	u64 latest_fw;
882 	u32 flags;
883 } mthca_hca_table[] = {
884 	[TAVOR]        = { .latest_fw = MTHCA_FW_VER(3, 5, 0),
885 			   .flags     = 0 },
886 	[ARBEL_COMPAT] = { .latest_fw = MTHCA_FW_VER(4, 8, 200),
887 			   .flags     = MTHCA_FLAG_PCIE },
888 	[ARBEL_NATIVE] = { .latest_fw = MTHCA_FW_VER(5, 3, 0),
889 			   .flags     = MTHCA_FLAG_MEMFREE |
890 					MTHCA_FLAG_PCIE },
891 	[SINAI]        = { .latest_fw = MTHCA_FW_VER(1, 2, 0),
892 			   .flags     = MTHCA_FLAG_MEMFREE |
893 					MTHCA_FLAG_PCIE    |
894 					MTHCA_FLAG_SINAI_OPT }
895 };
896 
__mthca_init_one(struct pci_dev * pdev,int hca_type)897 static int __mthca_init_one(struct pci_dev *pdev, int hca_type)
898 {
899 	int ddr_hidden = 0;
900 	int err;
901 	struct mthca_dev *mdev;
902 
903 	printk(KERN_INFO PFX "Initializing %s\n",
904 	       pci_name(pdev));
905 
906 	err = pci_enable_device(pdev);
907 	if (err) {
908 		dev_err(&pdev->dev, "Cannot enable PCI device, "
909 			"aborting.\n");
910 		return err;
911 	}
912 
913 	/*
914 	 * Check for BARs.  We expect 0: 1MB, 2: 8MB, 4: DDR (may not
915 	 * be present)
916 	 */
917 	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
918 	    pci_resource_len(pdev, 0) != 1 << 20) {
919 		dev_err(&pdev->dev, "Missing DCS, aborting.\n");
920 		err = -ENODEV;
921 		goto err_disable_pdev;
922 	}
923 	if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
924 		dev_err(&pdev->dev, "Missing UAR, aborting.\n");
925 		err = -ENODEV;
926 		goto err_disable_pdev;
927 	}
928 	if (!(pci_resource_flags(pdev, 4) & IORESOURCE_MEM))
929 		ddr_hidden = 1;
930 
931 	err = pci_request_regions(pdev, DRV_NAME);
932 	if (err) {
933 		dev_err(&pdev->dev, "Cannot obtain PCI resources, "
934 			"aborting.\n");
935 		goto err_disable_pdev;
936 	}
937 
938 	pci_set_master(pdev);
939 
940 	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
941 	if (err) {
942 		dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
943 		goto err_free_res;
944 	}
945 
946 	/* We can handle large RDMA requests, so allow larger segments. */
947 	dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
948 
949 	mdev = ib_alloc_device(mthca_dev, ib_dev);
950 	if (!mdev) {
951 		dev_err(&pdev->dev, "Device struct alloc failed, "
952 			"aborting.\n");
953 		err = -ENOMEM;
954 		goto err_free_res;
955 	}
956 
957 	mdev->pdev = pdev;
958 
959 	mdev->mthca_flags = mthca_hca_table[hca_type].flags;
960 	if (ddr_hidden)
961 		mdev->mthca_flags |= MTHCA_FLAG_DDR_HIDDEN;
962 
963 	/*
964 	 * Now reset the HCA before we touch the PCI capabilities or
965 	 * attempt a firmware command, since a boot ROM may have left
966 	 * the HCA in an undefined state.
967 	 */
968 	err = mthca_reset(mdev);
969 	if (err) {
970 		mthca_err(mdev, "Failed to reset HCA, aborting.\n");
971 		goto err_free_dev;
972 	}
973 
974 	err = mthca_cmd_init(mdev);
975 	if (err) {
976 		mthca_err(mdev, "Failed to init command interface, aborting.\n");
977 		goto err_free_dev;
978 	}
979 
980 	err = mthca_tune_pci(mdev);
981 	if (err)
982 		goto err_cmd;
983 
984 	err = mthca_init_hca(mdev);
985 	if (err)
986 		goto err_cmd;
987 
988 	if (mdev->fw_ver < mthca_hca_table[hca_type].latest_fw) {
989 		mthca_warn(mdev, "HCA FW version %d.%d.%03d is old (%d.%d.%03d is current).\n",
990 			   (int) (mdev->fw_ver >> 32), (int) (mdev->fw_ver >> 16) & 0xffff,
991 			   (int) (mdev->fw_ver & 0xffff),
992 			   (int) (mthca_hca_table[hca_type].latest_fw >> 32),
993 			   (int) (mthca_hca_table[hca_type].latest_fw >> 16) & 0xffff,
994 			   (int) (mthca_hca_table[hca_type].latest_fw & 0xffff));
995 		mthca_warn(mdev, "If you have problems, try updating your HCA FW.\n");
996 	}
997 
998 	if (msi_x && !mthca_enable_msi_x(mdev))
999 		mdev->mthca_flags |= MTHCA_FLAG_MSI_X;
1000 
1001 	err = mthca_setup_hca(mdev);
1002 	if (err == -EBUSY && (mdev->mthca_flags & MTHCA_FLAG_MSI_X)) {
1003 		pci_free_irq_vectors(pdev);
1004 		mdev->mthca_flags &= ~MTHCA_FLAG_MSI_X;
1005 
1006 		err = mthca_setup_hca(mdev);
1007 	}
1008 
1009 	if (err)
1010 		goto err_close;
1011 
1012 	err = mthca_register_device(mdev);
1013 	if (err)
1014 		goto err_cleanup;
1015 
1016 	err = mthca_create_agents(mdev);
1017 	if (err)
1018 		goto err_unregister;
1019 
1020 	pci_set_drvdata(pdev, mdev);
1021 	mdev->hca_type = hca_type;
1022 
1023 	mdev->active = true;
1024 
1025 	return 0;
1026 
1027 err_unregister:
1028 	mthca_unregister_device(mdev);
1029 
1030 err_cleanup:
1031 	mthca_cleanup_mcg_table(mdev);
1032 	mthca_cleanup_av_table(mdev);
1033 	mthca_cleanup_qp_table(mdev);
1034 	mthca_cleanup_srq_table(mdev);
1035 	mthca_cleanup_cq_table(mdev);
1036 	mthca_cmd_use_polling(mdev);
1037 	mthca_cleanup_eq_table(mdev);
1038 
1039 	mthca_pd_free(mdev, &mdev->driver_pd);
1040 
1041 	mthca_cleanup_mr_table(mdev);
1042 	mthca_cleanup_pd_table(mdev);
1043 	mthca_cleanup_uar_table(mdev);
1044 
1045 err_close:
1046 	if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
1047 		pci_free_irq_vectors(pdev);
1048 
1049 	mthca_close_hca(mdev);
1050 
1051 err_cmd:
1052 	mthca_cmd_cleanup(mdev);
1053 
1054 err_free_dev:
1055 	ib_dealloc_device(&mdev->ib_dev);
1056 
1057 err_free_res:
1058 	pci_release_regions(pdev);
1059 
1060 err_disable_pdev:
1061 	pci_disable_device(pdev);
1062 	pci_set_drvdata(pdev, NULL);
1063 	return err;
1064 }
1065 
__mthca_remove_one(struct pci_dev * pdev)1066 static void __mthca_remove_one(struct pci_dev *pdev)
1067 {
1068 	struct mthca_dev *mdev = pci_get_drvdata(pdev);
1069 	int p;
1070 
1071 	if (mdev) {
1072 		mthca_free_agents(mdev);
1073 		mthca_unregister_device(mdev);
1074 
1075 		for (p = 1; p <= mdev->limits.num_ports; ++p)
1076 			mthca_CLOSE_IB(mdev, p);
1077 
1078 		mthca_cleanup_mcg_table(mdev);
1079 		mthca_cleanup_av_table(mdev);
1080 		mthca_cleanup_qp_table(mdev);
1081 		mthca_cleanup_srq_table(mdev);
1082 		mthca_cleanup_cq_table(mdev);
1083 		mthca_cmd_use_polling(mdev);
1084 		mthca_cleanup_eq_table(mdev);
1085 
1086 		mthca_pd_free(mdev, &mdev->driver_pd);
1087 
1088 		mthca_cleanup_mr_table(mdev);
1089 		mthca_cleanup_pd_table(mdev);
1090 
1091 		iounmap(mdev->kar);
1092 		mthca_uar_free(mdev, &mdev->driver_uar);
1093 		mthca_cleanup_uar_table(mdev);
1094 		mthca_close_hca(mdev);
1095 		mthca_cmd_cleanup(mdev);
1096 
1097 		if (mdev->mthca_flags & MTHCA_FLAG_MSI_X)
1098 			pci_free_irq_vectors(pdev);
1099 
1100 		ib_dealloc_device(&mdev->ib_dev);
1101 		pci_release_regions(pdev);
1102 		pci_disable_device(pdev);
1103 		pci_set_drvdata(pdev, NULL);
1104 	}
1105 }
1106 
__mthca_restart_one(struct pci_dev * pdev)1107 int __mthca_restart_one(struct pci_dev *pdev)
1108 {
1109 	struct mthca_dev *mdev;
1110 	int hca_type;
1111 
1112 	mdev = pci_get_drvdata(pdev);
1113 	if (!mdev)
1114 		return -ENODEV;
1115 	hca_type = mdev->hca_type;
1116 	__mthca_remove_one(pdev);
1117 	return __mthca_init_one(pdev, hca_type);
1118 }
1119 
mthca_init_one(struct pci_dev * pdev,const struct pci_device_id * id)1120 static int mthca_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
1121 {
1122 	int ret;
1123 
1124 	mutex_lock(&mthca_device_mutex);
1125 
1126 	printk_once(KERN_INFO "%s", mthca_version);
1127 
1128 	if (id->driver_data >= ARRAY_SIZE(mthca_hca_table)) {
1129 		printk(KERN_ERR PFX "%s has invalid driver data %lx\n",
1130 		       pci_name(pdev), id->driver_data);
1131 		mutex_unlock(&mthca_device_mutex);
1132 		return -ENODEV;
1133 	}
1134 
1135 	ret = __mthca_init_one(pdev, id->driver_data);
1136 
1137 	mutex_unlock(&mthca_device_mutex);
1138 
1139 	return ret;
1140 }
1141 
mthca_remove_one(struct pci_dev * pdev)1142 static void mthca_remove_one(struct pci_dev *pdev)
1143 {
1144 	mutex_lock(&mthca_device_mutex);
1145 	__mthca_remove_one(pdev);
1146 	mutex_unlock(&mthca_device_mutex);
1147 }
1148 
1149 static const struct pci_device_id mthca_pci_table[] = {
1150 	{ PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR),
1151 	  .driver_data = TAVOR },
1152 	{ PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_TAVOR),
1153 	  .driver_data = TAVOR },
1154 	{ PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT),
1155 	  .driver_data = ARBEL_COMPAT },
1156 	{ PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT),
1157 	  .driver_data = ARBEL_COMPAT },
1158 	{ PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_ARBEL),
1159 	  .driver_data = ARBEL_NATIVE },
1160 	{ PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_ARBEL),
1161 	  .driver_data = ARBEL_NATIVE },
1162 	{ PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_SINAI),
1163 	  .driver_data = SINAI },
1164 	{ PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_SINAI),
1165 	  .driver_data = SINAI },
1166 	{ PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_SINAI_OLD),
1167 	  .driver_data = SINAI },
1168 	{ PCI_DEVICE(PCI_VENDOR_ID_TOPSPIN, PCI_DEVICE_ID_MELLANOX_SINAI_OLD),
1169 	  .driver_data = SINAI },
1170 	{ 0, }
1171 };
1172 
1173 MODULE_DEVICE_TABLE(pci, mthca_pci_table);
1174 
1175 static struct pci_driver mthca_driver = {
1176 	.name		= DRV_NAME,
1177 	.id_table	= mthca_pci_table,
1178 	.probe		= mthca_init_one,
1179 	.remove		= mthca_remove_one,
1180 };
1181 
__mthca_check_profile_val(const char * name,int * pval,int pval_default)1182 static void __init __mthca_check_profile_val(const char *name, int *pval,
1183 					     int pval_default)
1184 {
1185 	/* value must be positive and power of 2 */
1186 	int old_pval = *pval;
1187 
1188 	if (old_pval <= 0)
1189 		*pval = pval_default;
1190 	else
1191 		*pval = roundup_pow_of_two(old_pval);
1192 
1193 	if (old_pval != *pval) {
1194 		printk(KERN_WARNING PFX "Invalid value %d for %s in module parameter.\n",
1195 		       old_pval, name);
1196 		printk(KERN_WARNING PFX "Corrected %s to %d.\n", name, *pval);
1197 	}
1198 }
1199 
1200 #define mthca_check_profile_val(name, default)				\
1201 	__mthca_check_profile_val(#name, &hca_profile.name, default)
1202 
mthca_validate_profile(void)1203 static void __init mthca_validate_profile(void)
1204 {
1205 	mthca_check_profile_val(num_qp,            MTHCA_DEFAULT_NUM_QP);
1206 	mthca_check_profile_val(rdb_per_qp,        MTHCA_DEFAULT_RDB_PER_QP);
1207 	mthca_check_profile_val(num_cq,            MTHCA_DEFAULT_NUM_CQ);
1208 	mthca_check_profile_val(num_mcg, 	   MTHCA_DEFAULT_NUM_MCG);
1209 	mthca_check_profile_val(num_mpt, 	   MTHCA_DEFAULT_NUM_MPT);
1210 	mthca_check_profile_val(num_mtt, 	   MTHCA_DEFAULT_NUM_MTT);
1211 	mthca_check_profile_val(num_udav,          MTHCA_DEFAULT_NUM_UDAV);
1212 	mthca_check_profile_val(fmr_reserved_mtts, MTHCA_DEFAULT_NUM_RESERVED_MTTS);
1213 
1214 	if (hca_profile.fmr_reserved_mtts >= hca_profile.num_mtt) {
1215 		printk(KERN_WARNING PFX "Invalid fmr_reserved_mtts module parameter %d.\n",
1216 		       hca_profile.fmr_reserved_mtts);
1217 		printk(KERN_WARNING PFX "(Must be smaller than num_mtt %d)\n",
1218 		       hca_profile.num_mtt);
1219 		hca_profile.fmr_reserved_mtts = hca_profile.num_mtt / 2;
1220 		printk(KERN_WARNING PFX "Corrected fmr_reserved_mtts to %d.\n",
1221 		       hca_profile.fmr_reserved_mtts);
1222 	}
1223 
1224 	if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 5)) {
1225 		printk(KERN_WARNING PFX "bad log_mtts_per_seg (%d). Using default - %d\n",
1226 		       log_mtts_per_seg, ilog2(MTHCA_MTT_SEG_SIZE / 8));
1227 		log_mtts_per_seg = ilog2(MTHCA_MTT_SEG_SIZE / 8);
1228 	}
1229 }
1230 
mthca_init(void)1231 static int __init mthca_init(void)
1232 {
1233 	int ret;
1234 
1235 	mthca_validate_profile();
1236 
1237 	ret = mthca_catas_init();
1238 	if (ret)
1239 		return ret;
1240 
1241 	ret = pci_register_driver(&mthca_driver);
1242 	if (ret < 0) {
1243 		mthca_catas_cleanup();
1244 		return ret;
1245 	}
1246 
1247 	return 0;
1248 }
1249 
mthca_cleanup(void)1250 static void __exit mthca_cleanup(void)
1251 {
1252 	pci_unregister_driver(&mthca_driver);
1253 	mthca_catas_cleanup();
1254 }
1255 
1256 module_init(mthca_init);
1257 module_exit(mthca_cleanup);
1258