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[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx4 / main.c
1 /*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
5 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36 #include <linux/module.h>
37 #include <linux/init.h>
38 #include <linux/errno.h>
39 #include <linux/pci.h>
40 #include <linux/dma-mapping.h>
41 #include <linux/slab.h>
42 #include <linux/io-mapping.h>
43 #include <linux/delay.h>
44 #include <linux/netdevice.h>
45
46 #include <linux/mlx4/device.h>
47 #include <linux/mlx4/doorbell.h>
48
49 #include "mlx4.h"
50 #include "fw.h"
51 #include "icm.h"
52
53 MODULE_AUTHOR("Roland Dreier");
54 MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver");
55 MODULE_LICENSE("Dual BSD/GPL");
56 MODULE_VERSION(DRV_VERSION);
57
58 struct workqueue_struct *mlx4_wq;
59
60 #ifdef CONFIG_MLX4_DEBUG
61
62 int mlx4_debug_level = 0;
63 module_param_named(debug_level, mlx4_debug_level, int, 0644);
64 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
65
66 #endif /* CONFIG_MLX4_DEBUG */
67
68 #ifdef CONFIG_PCI_MSI
69
70 static int msi_x = 1;
71 module_param(msi_x, int, 0444);
72 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
73
74 #else /* CONFIG_PCI_MSI */
75
76 #define msi_x (0)
77
78 #endif /* CONFIG_PCI_MSI */
79
80 static int num_vfs;
81 module_param(num_vfs, int, 0444);
82 MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0");
83
84 static int probe_vf;
85 module_param(probe_vf, int, 0644);
86 MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)");
87
88 int mlx4_log_num_mgm_entry_size = 10;
89 module_param_named(log_num_mgm_entry_size,
90 mlx4_log_num_mgm_entry_size, int, 0444);
91 MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num"
92 " of qp per mcg, for example:"
93 " 10 gives 248.range: 9<="
94 " log_num_mgm_entry_size <= 12."
95 " Not in use with device managed"
96 " flow steering");
97
98 #define MLX4_VF (1 << 0)
99
100 #define HCA_GLOBAL_CAP_MASK 0
101 #define PF_CONTEXT_BEHAVIOUR_MASK 0
102
103 static char mlx4_version[] __devinitdata =
104 DRV_NAME ": Mellanox ConnectX core driver v"
105 DRV_VERSION " (" DRV_RELDATE ")\n";
106
107 static struct mlx4_profile default_profile = {
108 .num_qp = 1 << 18,
109 .num_srq = 1 << 16,
110 .rdmarc_per_qp = 1 << 4,
111 .num_cq = 1 << 16,
112 .num_mcg = 1 << 13,
113 .num_mpt = 1 << 19,
114 .num_mtt = 1 << 20, /* It is really num mtt segements */
115 };
116
117 static int log_num_mac = 7;
118 module_param_named(log_num_mac, log_num_mac, int, 0444);
119 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
120
121 static int log_num_vlan;
122 module_param_named(log_num_vlan, log_num_vlan, int, 0444);
123 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
124 /* Log2 max number of VLANs per ETH port (0-7) */
125 #define MLX4_LOG_NUM_VLANS 7
126
127 static bool use_prio;
128 module_param_named(use_prio, use_prio, bool, 0444);
129 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports "
130 "(0/1, default 0)");
131
132 int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
133 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
134 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-7)");
135
136 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE};
137 static int arr_argc = 2;
138 module_param_array(port_type_array, int, &arr_argc, 0444);
139 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default "
140 "1 for IB, 2 for Ethernet");
141
142 struct mlx4_port_config {
143 struct list_head list;
144 enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
145 struct pci_dev *pdev;
146 };
147
148 int mlx4_check_port_params(struct mlx4_dev *dev,
149 enum mlx4_port_type *port_type)
150 {
151 int i;
152
153 for (i = 0; i < dev->caps.num_ports - 1; i++) {
154 if (port_type[i] != port_type[i + 1]) {
155 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
156 mlx4_err(dev, "Only same port types supported "
157 "on this HCA, aborting.\n");
158 return -EINVAL;
159 }
160 }
161 }
162
163 for (i = 0; i < dev->caps.num_ports; i++) {
164 if (!(port_type[i] & dev->caps.supported_type[i+1])) {
165 mlx4_err(dev, "Requested port type for port %d is not "
166 "supported on this HCA\n", i + 1);
167 return -EINVAL;
168 }
169 }
170 return 0;
171 }
172
173 static void mlx4_set_port_mask(struct mlx4_dev *dev)
174 {
175 int i;
176
177 for (i = 1; i <= dev->caps.num_ports; ++i)
178 dev->caps.port_mask[i] = dev->caps.port_type[i];
179 }
180
181 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
182 {
183 int err;
184 int i;
185
186 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
187 if (err) {
188 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
189 return err;
190 }
191
192 if (dev_cap->min_page_sz > PAGE_SIZE) {
193 mlx4_err(dev, "HCA minimum page size of %d bigger than "
194 "kernel PAGE_SIZE of %ld, aborting.\n",
195 dev_cap->min_page_sz, PAGE_SIZE);
196 return -ENODEV;
197 }
198 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
199 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
200 "aborting.\n",
201 dev_cap->num_ports, MLX4_MAX_PORTS);
202 return -ENODEV;
203 }
204
205 if (dev_cap->uar_size > pci_resource_len(dev->pdev, 2)) {
206 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than "
207 "PCI resource 2 size of 0x%llx, aborting.\n",
208 dev_cap->uar_size,
209 (unsigned long long) pci_resource_len(dev->pdev, 2));
210 return -ENODEV;
211 }
212
213 dev->caps.num_ports = dev_cap->num_ports;
214 dev->phys_caps.num_phys_eqs = MLX4_MAX_EQ_NUM;
215 for (i = 1; i <= dev->caps.num_ports; ++i) {
216 dev->caps.vl_cap[i] = dev_cap->max_vl[i];
217 dev->caps.ib_mtu_cap[i] = dev_cap->ib_mtu[i];
218 dev->phys_caps.gid_phys_table_len[i] = dev_cap->max_gids[i];
219 dev->phys_caps.pkey_phys_table_len[i] = dev_cap->max_pkeys[i];
220 /* set gid and pkey table operating lengths by default
221 * to non-sriov values */
222 dev->caps.gid_table_len[i] = dev_cap->max_gids[i];
223 dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
224 dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
225 dev->caps.eth_mtu_cap[i] = dev_cap->eth_mtu[i];
226 dev->caps.def_mac[i] = dev_cap->def_mac[i];
227 dev->caps.supported_type[i] = dev_cap->supported_port_types[i];
228 dev->caps.suggested_type[i] = dev_cap->suggested_type[i];
229 dev->caps.default_sense[i] = dev_cap->default_sense[i];
230 dev->caps.trans_type[i] = dev_cap->trans_type[i];
231 dev->caps.vendor_oui[i] = dev_cap->vendor_oui[i];
232 dev->caps.wavelength[i] = dev_cap->wavelength[i];
233 dev->caps.trans_code[i] = dev_cap->trans_code[i];
234 }
235
236 dev->caps.uar_page_size = PAGE_SIZE;
237 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
238 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
239 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
240 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
241 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
242 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
243 dev->caps.max_wqes = dev_cap->max_qp_sz;
244 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
245 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
246 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
247 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
248 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
249 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
250 /*
251 * Subtract 1 from the limit because we need to allocate a
252 * spare CQE so the HCA HW can tell the difference between an
253 * empty CQ and a full CQ.
254 */
255 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
256 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
257 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
258 dev->caps.reserved_mtts = dev_cap->reserved_mtts;
259 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
260
261 /* The first 128 UARs are used for EQ doorbells */
262 dev->caps.reserved_uars = max_t(int, 128, dev_cap->reserved_uars);
263 dev->caps.reserved_pds = dev_cap->reserved_pds;
264 dev->caps.reserved_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
265 dev_cap->reserved_xrcds : 0;
266 dev->caps.max_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
267 dev_cap->max_xrcds : 0;
268 dev->caps.mtt_entry_sz = dev_cap->mtt_entry_sz;
269
270 dev->caps.max_msg_sz = dev_cap->max_msg_sz;
271 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
272 dev->caps.flags = dev_cap->flags;
273 dev->caps.flags2 = dev_cap->flags2;
274 dev->caps.bmme_flags = dev_cap->bmme_flags;
275 dev->caps.reserved_lkey = dev_cap->reserved_lkey;
276 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
277 dev->caps.max_gso_sz = dev_cap->max_gso_sz;
278 dev->caps.max_rss_tbl_sz = dev_cap->max_rss_tbl_sz;
279
280 if (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN) {
281 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
282 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
283 dev->caps.fs_log_max_ucast_qp_range_size =
284 dev_cap->fs_log_max_ucast_qp_range_size;
285 } else {
286 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER &&
287 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) {
288 dev->caps.steering_mode = MLX4_STEERING_MODE_B0;
289 } else {
290 dev->caps.steering_mode = MLX4_STEERING_MODE_A0;
291
292 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER ||
293 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
294 mlx4_warn(dev, "Must have UC_STEER and MC_STEER flags "
295 "set to use B0 steering. Falling back to A0 steering mode.\n");
296 }
297 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev);
298 }
299 mlx4_dbg(dev, "Steering mode is: %s\n",
300 mlx4_steering_mode_str(dev->caps.steering_mode));
301
302 /* Sense port always allowed on supported devices for ConnectX1 and 2 */
303 if (dev->pdev->device != 0x1003)
304 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
305
306 dev->caps.log_num_macs = log_num_mac;
307 dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
308 dev->caps.log_num_prios = use_prio ? 3 : 0;
309
310 for (i = 1; i <= dev->caps.num_ports; ++i) {
311 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
312 if (dev->caps.supported_type[i]) {
313 /* if only ETH is supported - assign ETH */
314 if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH)
315 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
316 /* if only IB is supported, assign IB */
317 else if (dev->caps.supported_type[i] ==
318 MLX4_PORT_TYPE_IB)
319 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
320 else {
321 /* if IB and ETH are supported, we set the port
322 * type according to user selection of port type;
323 * if user selected none, take the FW hint */
324 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE)
325 dev->caps.port_type[i] = dev->caps.suggested_type[i] ?
326 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB;
327 else
328 dev->caps.port_type[i] = port_type_array[i - 1];
329 }
330 }
331 /*
332 * Link sensing is allowed on the port if 3 conditions are true:
333 * 1. Both protocols are supported on the port.
334 * 2. Different types are supported on the port
335 * 3. FW declared that it supports link sensing
336 */
337 mlx4_priv(dev)->sense.sense_allowed[i] =
338 ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) &&
339 (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
340 (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT));
341
342 /*
343 * If "default_sense" bit is set, we move the port to "AUTO" mode
344 * and perform sense_port FW command to try and set the correct
345 * port type from beginning
346 */
347 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) {
348 enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE;
349 dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO;
350 mlx4_SENSE_PORT(dev, i, &sensed_port);
351 if (sensed_port != MLX4_PORT_TYPE_NONE)
352 dev->caps.port_type[i] = sensed_port;
353 } else {
354 dev->caps.possible_type[i] = dev->caps.port_type[i];
355 }
356
357 if (dev->caps.log_num_macs > dev_cap->log_max_macs[i]) {
358 dev->caps.log_num_macs = dev_cap->log_max_macs[i];
359 mlx4_warn(dev, "Requested number of MACs is too much "
360 "for port %d, reducing to %d.\n",
361 i, 1 << dev->caps.log_num_macs);
362 }
363 if (dev->caps.log_num_vlans > dev_cap->log_max_vlans[i]) {
364 dev->caps.log_num_vlans = dev_cap->log_max_vlans[i];
365 mlx4_warn(dev, "Requested number of VLANs is too much "
366 "for port %d, reducing to %d.\n",
367 i, 1 << dev->caps.log_num_vlans);
368 }
369 }
370
371 dev->caps.max_counters = 1 << ilog2(dev_cap->max_counters);
372
373 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
374 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
375 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
376 (1 << dev->caps.log_num_macs) *
377 (1 << dev->caps.log_num_vlans) *
378 (1 << dev->caps.log_num_prios) *
379 dev->caps.num_ports;
380 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
381
382 dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
383 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
384 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
385 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
386
387 dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
388 return 0;
389 }
390 /*The function checks if there are live vf, return the num of them*/
391 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
392 {
393 struct mlx4_priv *priv = mlx4_priv(dev);
394 struct mlx4_slave_state *s_state;
395 int i;
396 int ret = 0;
397
398 for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
399 s_state = &priv->mfunc.master.slave_state[i];
400 if (s_state->active && s_state->last_cmd !=
401 MLX4_COMM_CMD_RESET) {
402 mlx4_warn(dev, "%s: slave: %d is still active\n",
403 __func__, i);
404 ret++;
405 }
406 }
407 return ret;
408 }
409
410 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
411 {
412 u32 qk = MLX4_RESERVED_QKEY_BASE;
413 if (qpn >= dev->caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
414 qpn < dev->caps.sqp_start)
415 return -EINVAL;
416
417 if (qpn >= dev->caps.base_tunnel_sqpn)
418 /* tunnel qp */
419 qk += qpn - dev->caps.base_tunnel_sqpn;
420 else
421 qk += qpn - dev->caps.sqp_start;
422 *qkey = qk;
423 return 0;
424 }
425 EXPORT_SYMBOL(mlx4_get_parav_qkey);
426
427 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val)
428 {
429 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
430
431 if (!mlx4_is_master(dev))
432 return;
433
434 priv->virt2phys_pkey[slave][port - 1][i] = val;
435 }
436 EXPORT_SYMBOL(mlx4_sync_pkey_table);
437
438 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
439 {
440 struct mlx4_priv *priv = mlx4_priv(dev);
441 struct mlx4_slave_state *s_slave;
442
443 if (!mlx4_is_master(dev))
444 return 0;
445
446 s_slave = &priv->mfunc.master.slave_state[slave];
447 return !!s_slave->active;
448 }
449 EXPORT_SYMBOL(mlx4_is_slave_active);
450
451 static int mlx4_slave_cap(struct mlx4_dev *dev)
452 {
453 int err;
454 u32 page_size;
455 struct mlx4_dev_cap dev_cap;
456 struct mlx4_func_cap func_cap;
457 struct mlx4_init_hca_param hca_param;
458 int i;
459
460 memset(&hca_param, 0, sizeof(hca_param));
461 err = mlx4_QUERY_HCA(dev, &hca_param);
462 if (err) {
463 mlx4_err(dev, "QUERY_HCA command failed, aborting.\n");
464 return err;
465 }
466
467 /*fail if the hca has an unknown capability */
468 if ((hca_param.global_caps | HCA_GLOBAL_CAP_MASK) !=
469 HCA_GLOBAL_CAP_MASK) {
470 mlx4_err(dev, "Unknown hca global capabilities\n");
471 return -ENOSYS;
472 }
473
474 mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
475
476 memset(&dev_cap, 0, sizeof(dev_cap));
477 dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
478 err = mlx4_dev_cap(dev, &dev_cap);
479 if (err) {
480 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
481 return err;
482 }
483
484 err = mlx4_QUERY_FW(dev);
485 if (err)
486 mlx4_err(dev, "QUERY_FW command failed: could not get FW version.\n");
487
488 page_size = ~dev->caps.page_size_cap + 1;
489 mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
490 if (page_size > PAGE_SIZE) {
491 mlx4_err(dev, "HCA minimum page size of %d bigger than "
492 "kernel PAGE_SIZE of %ld, aborting.\n",
493 page_size, PAGE_SIZE);
494 return -ENODEV;
495 }
496
497 /* slave gets uar page size from QUERY_HCA fw command */
498 dev->caps.uar_page_size = 1 << (hca_param.uar_page_sz + 12);
499
500 /* TODO: relax this assumption */
501 if (dev->caps.uar_page_size != PAGE_SIZE) {
502 mlx4_err(dev, "UAR size:%d != kernel PAGE_SIZE of %ld\n",
503 dev->caps.uar_page_size, PAGE_SIZE);
504 return -ENODEV;
505 }
506
507 memset(&func_cap, 0, sizeof(func_cap));
508 err = mlx4_QUERY_FUNC_CAP(dev, &func_cap);
509 if (err) {
510 mlx4_err(dev, "QUERY_FUNC_CAP command failed, aborting.\n");
511 return err;
512 }
513
514 if ((func_cap.pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
515 PF_CONTEXT_BEHAVIOUR_MASK) {
516 mlx4_err(dev, "Unknown pf context behaviour\n");
517 return -ENOSYS;
518 }
519
520 dev->caps.num_ports = func_cap.num_ports;
521 dev->caps.num_qps = func_cap.qp_quota;
522 dev->caps.num_srqs = func_cap.srq_quota;
523 dev->caps.num_cqs = func_cap.cq_quota;
524 dev->caps.num_eqs = func_cap.max_eq;
525 dev->caps.reserved_eqs = func_cap.reserved_eq;
526 dev->caps.num_mpts = func_cap.mpt_quota;
527 dev->caps.num_mtts = func_cap.mtt_quota;
528 dev->caps.num_pds = MLX4_NUM_PDS;
529 dev->caps.num_mgms = 0;
530 dev->caps.num_amgms = 0;
531
532 if (dev->caps.num_ports > MLX4_MAX_PORTS) {
533 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
534 "aborting.\n", dev->caps.num_ports, MLX4_MAX_PORTS);
535 return -ENODEV;
536 }
537
538 for (i = 1; i <= dev->caps.num_ports; ++i) {
539 dev->caps.port_mask[i] = dev->caps.port_type[i];
540 if (mlx4_get_slave_pkey_gid_tbl_len(dev, i,
541 &dev->caps.gid_table_len[i],
542 &dev->caps.pkey_table_len[i]))
543 return -ENODEV;
544 }
545
546 if (dev->caps.uar_page_size * (dev->caps.num_uars -
547 dev->caps.reserved_uars) >
548 pci_resource_len(dev->pdev, 2)) {
549 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than "
550 "PCI resource 2 size of 0x%llx, aborting.\n",
551 dev->caps.uar_page_size * dev->caps.num_uars,
552 (unsigned long long) pci_resource_len(dev->pdev, 2));
553 return -ENODEV;
554 }
555
556 /* Calculate our sqp_start */
557 dev->caps.sqp_start = func_cap.base_proxy_qpn;
558 dev->caps.base_tunnel_sqpn = func_cap.base_tunnel_qpn;
559
560 return 0;
561 }
562
563 /*
564 * Change the port configuration of the device.
565 * Every user of this function must hold the port mutex.
566 */
567 int mlx4_change_port_types(struct mlx4_dev *dev,
568 enum mlx4_port_type *port_types)
569 {
570 int err = 0;
571 int change = 0;
572 int port;
573
574 for (port = 0; port < dev->caps.num_ports; port++) {
575 /* Change the port type only if the new type is different
576 * from the current, and not set to Auto */
577 if (port_types[port] != dev->caps.port_type[port + 1])
578 change = 1;
579 }
580 if (change) {
581 mlx4_unregister_device(dev);
582 for (port = 1; port <= dev->caps.num_ports; port++) {
583 mlx4_CLOSE_PORT(dev, port);
584 dev->caps.port_type[port] = port_types[port - 1];
585 err = mlx4_SET_PORT(dev, port, -1);
586 if (err) {
587 mlx4_err(dev, "Failed to set port %d, "
588 "aborting\n", port);
589 goto out;
590 }
591 }
592 mlx4_set_port_mask(dev);
593 err = mlx4_register_device(dev);
594 }
595
596 out:
597 return err;
598 }
599
600 static ssize_t show_port_type(struct device *dev,
601 struct device_attribute *attr,
602 char *buf)
603 {
604 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
605 port_attr);
606 struct mlx4_dev *mdev = info->dev;
607 char type[8];
608
609 sprintf(type, "%s",
610 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
611 "ib" : "eth");
612 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
613 sprintf(buf, "auto (%s)\n", type);
614 else
615 sprintf(buf, "%s\n", type);
616
617 return strlen(buf);
618 }
619
620 static ssize_t set_port_type(struct device *dev,
621 struct device_attribute *attr,
622 const char *buf, size_t count)
623 {
624 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
625 port_attr);
626 struct mlx4_dev *mdev = info->dev;
627 struct mlx4_priv *priv = mlx4_priv(mdev);
628 enum mlx4_port_type types[MLX4_MAX_PORTS];
629 enum mlx4_port_type new_types[MLX4_MAX_PORTS];
630 int i;
631 int err = 0;
632
633 if (!strcmp(buf, "ib\n"))
634 info->tmp_type = MLX4_PORT_TYPE_IB;
635 else if (!strcmp(buf, "eth\n"))
636 info->tmp_type = MLX4_PORT_TYPE_ETH;
637 else if (!strcmp(buf, "auto\n"))
638 info->tmp_type = MLX4_PORT_TYPE_AUTO;
639 else {
640 mlx4_err(mdev, "%s is not supported port type\n", buf);
641 return -EINVAL;
642 }
643
644 mlx4_stop_sense(mdev);
645 mutex_lock(&priv->port_mutex);
646 /* Possible type is always the one that was delivered */
647 mdev->caps.possible_type[info->port] = info->tmp_type;
648
649 for (i = 0; i < mdev->caps.num_ports; i++) {
650 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
651 mdev->caps.possible_type[i+1];
652 if (types[i] == MLX4_PORT_TYPE_AUTO)
653 types[i] = mdev->caps.port_type[i+1];
654 }
655
656 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
657 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
658 for (i = 1; i <= mdev->caps.num_ports; i++) {
659 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
660 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
661 err = -EINVAL;
662 }
663 }
664 }
665 if (err) {
666 mlx4_err(mdev, "Auto sensing is not supported on this HCA. "
667 "Set only 'eth' or 'ib' for both ports "
668 "(should be the same)\n");
669 goto out;
670 }
671
672 mlx4_do_sense_ports(mdev, new_types, types);
673
674 err = mlx4_check_port_params(mdev, new_types);
675 if (err)
676 goto out;
677
678 /* We are about to apply the changes after the configuration
679 * was verified, no need to remember the temporary types
680 * any more */
681 for (i = 0; i < mdev->caps.num_ports; i++)
682 priv->port[i + 1].tmp_type = 0;
683
684 err = mlx4_change_port_types(mdev, new_types);
685
686 out:
687 mlx4_start_sense(mdev);
688 mutex_unlock(&priv->port_mutex);
689 return err ? err : count;
690 }
691
692 enum ibta_mtu {
693 IB_MTU_256 = 1,
694 IB_MTU_512 = 2,
695 IB_MTU_1024 = 3,
696 IB_MTU_2048 = 4,
697 IB_MTU_4096 = 5
698 };
699
700 static inline int int_to_ibta_mtu(int mtu)
701 {
702 switch (mtu) {
703 case 256: return IB_MTU_256;
704 case 512: return IB_MTU_512;
705 case 1024: return IB_MTU_1024;
706 case 2048: return IB_MTU_2048;
707 case 4096: return IB_MTU_4096;
708 default: return -1;
709 }
710 }
711
712 static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
713 {
714 switch (mtu) {
715 case IB_MTU_256: return 256;
716 case IB_MTU_512: return 512;
717 case IB_MTU_1024: return 1024;
718 case IB_MTU_2048: return 2048;
719 case IB_MTU_4096: return 4096;
720 default: return -1;
721 }
722 }
723
724 static ssize_t show_port_ib_mtu(struct device *dev,
725 struct device_attribute *attr,
726 char *buf)
727 {
728 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
729 port_mtu_attr);
730 struct mlx4_dev *mdev = info->dev;
731
732 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
733 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
734
735 sprintf(buf, "%d\n",
736 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
737 return strlen(buf);
738 }
739
740 static ssize_t set_port_ib_mtu(struct device *dev,
741 struct device_attribute *attr,
742 const char *buf, size_t count)
743 {
744 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
745 port_mtu_attr);
746 struct mlx4_dev *mdev = info->dev;
747 struct mlx4_priv *priv = mlx4_priv(mdev);
748 int err, port, mtu, ibta_mtu = -1;
749
750 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
751 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
752 return -EINVAL;
753 }
754
755 err = sscanf(buf, "%d", &mtu);
756 if (err > 0)
757 ibta_mtu = int_to_ibta_mtu(mtu);
758
759 if (err <= 0 || ibta_mtu < 0) {
760 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
761 return -EINVAL;
762 }
763
764 mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
765
766 mlx4_stop_sense(mdev);
767 mutex_lock(&priv->port_mutex);
768 mlx4_unregister_device(mdev);
769 for (port = 1; port <= mdev->caps.num_ports; port++) {
770 mlx4_CLOSE_PORT(mdev, port);
771 err = mlx4_SET_PORT(mdev, port, -1);
772 if (err) {
773 mlx4_err(mdev, "Failed to set port %d, "
774 "aborting\n", port);
775 goto err_set_port;
776 }
777 }
778 err = mlx4_register_device(mdev);
779 err_set_port:
780 mutex_unlock(&priv->port_mutex);
781 mlx4_start_sense(mdev);
782 return err ? err : count;
783 }
784
785 static int mlx4_load_fw(struct mlx4_dev *dev)
786 {
787 struct mlx4_priv *priv = mlx4_priv(dev);
788 int err;
789
790 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
791 GFP_HIGHUSER | __GFP_NOWARN, 0);
792 if (!priv->fw.fw_icm) {
793 mlx4_err(dev, "Couldn't allocate FW area, aborting.\n");
794 return -ENOMEM;
795 }
796
797 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
798 if (err) {
799 mlx4_err(dev, "MAP_FA command failed, aborting.\n");
800 goto err_free;
801 }
802
803 err = mlx4_RUN_FW(dev);
804 if (err) {
805 mlx4_err(dev, "RUN_FW command failed, aborting.\n");
806 goto err_unmap_fa;
807 }
808
809 return 0;
810
811 err_unmap_fa:
812 mlx4_UNMAP_FA(dev);
813
814 err_free:
815 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
816 return err;
817 }
818
819 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
820 int cmpt_entry_sz)
821 {
822 struct mlx4_priv *priv = mlx4_priv(dev);
823 int err;
824 int num_eqs;
825
826 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
827 cmpt_base +
828 ((u64) (MLX4_CMPT_TYPE_QP *
829 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
830 cmpt_entry_sz, dev->caps.num_qps,
831 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
832 0, 0);
833 if (err)
834 goto err;
835
836 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
837 cmpt_base +
838 ((u64) (MLX4_CMPT_TYPE_SRQ *
839 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
840 cmpt_entry_sz, dev->caps.num_srqs,
841 dev->caps.reserved_srqs, 0, 0);
842 if (err)
843 goto err_qp;
844
845 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
846 cmpt_base +
847 ((u64) (MLX4_CMPT_TYPE_CQ *
848 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
849 cmpt_entry_sz, dev->caps.num_cqs,
850 dev->caps.reserved_cqs, 0, 0);
851 if (err)
852 goto err_srq;
853
854 num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
855 dev->caps.num_eqs;
856 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
857 cmpt_base +
858 ((u64) (MLX4_CMPT_TYPE_EQ *
859 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
860 cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
861 if (err)
862 goto err_cq;
863
864 return 0;
865
866 err_cq:
867 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
868
869 err_srq:
870 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
871
872 err_qp:
873 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
874
875 err:
876 return err;
877 }
878
879 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
880 struct mlx4_init_hca_param *init_hca, u64 icm_size)
881 {
882 struct mlx4_priv *priv = mlx4_priv(dev);
883 u64 aux_pages;
884 int num_eqs;
885 int err;
886
887 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
888 if (err) {
889 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting.\n");
890 return err;
891 }
892
893 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory.\n",
894 (unsigned long long) icm_size >> 10,
895 (unsigned long long) aux_pages << 2);
896
897 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
898 GFP_HIGHUSER | __GFP_NOWARN, 0);
899 if (!priv->fw.aux_icm) {
900 mlx4_err(dev, "Couldn't allocate aux memory, aborting.\n");
901 return -ENOMEM;
902 }
903
904 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
905 if (err) {
906 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting.\n");
907 goto err_free_aux;
908 }
909
910 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
911 if (err) {
912 mlx4_err(dev, "Failed to map cMPT context memory, aborting.\n");
913 goto err_unmap_aux;
914 }
915
916
917 num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
918 dev->caps.num_eqs;
919 err = mlx4_init_icm_table(dev, &priv->eq_table.table,
920 init_hca->eqc_base, dev_cap->eqc_entry_sz,
921 num_eqs, num_eqs, 0, 0);
922 if (err) {
923 mlx4_err(dev, "Failed to map EQ context memory, aborting.\n");
924 goto err_unmap_cmpt;
925 }
926
927 /*
928 * Reserved MTT entries must be aligned up to a cacheline
929 * boundary, since the FW will write to them, while the driver
930 * writes to all other MTT entries. (The variable
931 * dev->caps.mtt_entry_sz below is really the MTT segment
932 * size, not the raw entry size)
933 */
934 dev->caps.reserved_mtts =
935 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
936 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
937
938 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
939 init_hca->mtt_base,
940 dev->caps.mtt_entry_sz,
941 dev->caps.num_mtts,
942 dev->caps.reserved_mtts, 1, 0);
943 if (err) {
944 mlx4_err(dev, "Failed to map MTT context memory, aborting.\n");
945 goto err_unmap_eq;
946 }
947
948 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
949 init_hca->dmpt_base,
950 dev_cap->dmpt_entry_sz,
951 dev->caps.num_mpts,
952 dev->caps.reserved_mrws, 1, 1);
953 if (err) {
954 mlx4_err(dev, "Failed to map dMPT context memory, aborting.\n");
955 goto err_unmap_mtt;
956 }
957
958 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
959 init_hca->qpc_base,
960 dev_cap->qpc_entry_sz,
961 dev->caps.num_qps,
962 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
963 0, 0);
964 if (err) {
965 mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
966 goto err_unmap_dmpt;
967 }
968
969 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
970 init_hca->auxc_base,
971 dev_cap->aux_entry_sz,
972 dev->caps.num_qps,
973 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
974 0, 0);
975 if (err) {
976 mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
977 goto err_unmap_qp;
978 }
979
980 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
981 init_hca->altc_base,
982 dev_cap->altc_entry_sz,
983 dev->caps.num_qps,
984 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
985 0, 0);
986 if (err) {
987 mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
988 goto err_unmap_auxc;
989 }
990
991 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
992 init_hca->rdmarc_base,
993 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
994 dev->caps.num_qps,
995 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
996 0, 0);
997 if (err) {
998 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
999 goto err_unmap_altc;
1000 }
1001
1002 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
1003 init_hca->cqc_base,
1004 dev_cap->cqc_entry_sz,
1005 dev->caps.num_cqs,
1006 dev->caps.reserved_cqs, 0, 0);
1007 if (err) {
1008 mlx4_err(dev, "Failed to map CQ context memory, aborting.\n");
1009 goto err_unmap_rdmarc;
1010 }
1011
1012 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
1013 init_hca->srqc_base,
1014 dev_cap->srq_entry_sz,
1015 dev->caps.num_srqs,
1016 dev->caps.reserved_srqs, 0, 0);
1017 if (err) {
1018 mlx4_err(dev, "Failed to map SRQ context memory, aborting.\n");
1019 goto err_unmap_cq;
1020 }
1021
1022 /*
1023 * For flow steering device managed mode it is required to use
1024 * mlx4_init_icm_table. For B0 steering mode it's not strictly
1025 * required, but for simplicity just map the whole multicast
1026 * group table now. The table isn't very big and it's a lot
1027 * easier than trying to track ref counts.
1028 */
1029 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1030 init_hca->mc_base,
1031 mlx4_get_mgm_entry_size(dev),
1032 dev->caps.num_mgms + dev->caps.num_amgms,
1033 dev->caps.num_mgms + dev->caps.num_amgms,
1034 0, 0);
1035 if (err) {
1036 mlx4_err(dev, "Failed to map MCG context memory, aborting.\n");
1037 goto err_unmap_srq;
1038 }
1039
1040 return 0;
1041
1042 err_unmap_srq:
1043 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1044
1045 err_unmap_cq:
1046 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1047
1048 err_unmap_rdmarc:
1049 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1050
1051 err_unmap_altc:
1052 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1053
1054 err_unmap_auxc:
1055 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1056
1057 err_unmap_qp:
1058 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1059
1060 err_unmap_dmpt:
1061 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1062
1063 err_unmap_mtt:
1064 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1065
1066 err_unmap_eq:
1067 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1068
1069 err_unmap_cmpt:
1070 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1071 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1072 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1073 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1074
1075 err_unmap_aux:
1076 mlx4_UNMAP_ICM_AUX(dev);
1077
1078 err_free_aux:
1079 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1080
1081 return err;
1082 }
1083
1084 static void mlx4_free_icms(struct mlx4_dev *dev)
1085 {
1086 struct mlx4_priv *priv = mlx4_priv(dev);
1087
1088 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1089 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1090 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1091 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1092 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1093 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1094 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1095 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1096 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1097 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1098 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1099 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1100 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1101 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1102
1103 mlx4_UNMAP_ICM_AUX(dev);
1104 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1105 }
1106
1107 static void mlx4_slave_exit(struct mlx4_dev *dev)
1108 {
1109 struct mlx4_priv *priv = mlx4_priv(dev);
1110
1111 down(&priv->cmd.slave_sem);
1112 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_TIME))
1113 mlx4_warn(dev, "Failed to close slave function.\n");
1114 up(&priv->cmd.slave_sem);
1115 }
1116
1117 static int map_bf_area(struct mlx4_dev *dev)
1118 {
1119 struct mlx4_priv *priv = mlx4_priv(dev);
1120 resource_size_t bf_start;
1121 resource_size_t bf_len;
1122 int err = 0;
1123
1124 if (!dev->caps.bf_reg_size)
1125 return -ENXIO;
1126
1127 bf_start = pci_resource_start(dev->pdev, 2) +
1128 (dev->caps.num_uars << PAGE_SHIFT);
1129 bf_len = pci_resource_len(dev->pdev, 2) -
1130 (dev->caps.num_uars << PAGE_SHIFT);
1131 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1132 if (!priv->bf_mapping)
1133 err = -ENOMEM;
1134
1135 return err;
1136 }
1137
1138 static void unmap_bf_area(struct mlx4_dev *dev)
1139 {
1140 if (mlx4_priv(dev)->bf_mapping)
1141 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1142 }
1143
1144 static void mlx4_close_hca(struct mlx4_dev *dev)
1145 {
1146 unmap_bf_area(dev);
1147 if (mlx4_is_slave(dev))
1148 mlx4_slave_exit(dev);
1149 else {
1150 mlx4_CLOSE_HCA(dev, 0);
1151 mlx4_free_icms(dev);
1152 mlx4_UNMAP_FA(dev);
1153 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1154 }
1155 }
1156
1157 static int mlx4_init_slave(struct mlx4_dev *dev)
1158 {
1159 struct mlx4_priv *priv = mlx4_priv(dev);
1160 u64 dma = (u64) priv->mfunc.vhcr_dma;
1161 int num_of_reset_retries = NUM_OF_RESET_RETRIES;
1162 int ret_from_reset = 0;
1163 u32 slave_read;
1164 u32 cmd_channel_ver;
1165
1166 down(&priv->cmd.slave_sem);
1167 priv->cmd.max_cmds = 1;
1168 mlx4_warn(dev, "Sending reset\n");
1169 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
1170 MLX4_COMM_TIME);
1171 /* if we are in the middle of flr the slave will try
1172 * NUM_OF_RESET_RETRIES times before leaving.*/
1173 if (ret_from_reset) {
1174 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
1175 msleep(SLEEP_TIME_IN_RESET);
1176 while (ret_from_reset && num_of_reset_retries) {
1177 mlx4_warn(dev, "slave is currently in the"
1178 "middle of FLR. retrying..."
1179 "(try num:%d)\n",
1180 (NUM_OF_RESET_RETRIES -
1181 num_of_reset_retries + 1));
1182 ret_from_reset =
1183 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET,
1184 0, MLX4_COMM_TIME);
1185 num_of_reset_retries = num_of_reset_retries - 1;
1186 }
1187 } else
1188 goto err;
1189 }
1190
1191 /* check the driver version - the slave I/F revision
1192 * must match the master's */
1193 slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
1194 cmd_channel_ver = mlx4_comm_get_version();
1195
1196 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
1197 MLX4_COMM_GET_IF_REV(slave_read)) {
1198 mlx4_err(dev, "slave driver version is not supported"
1199 " by the master\n");
1200 goto err;
1201 }
1202
1203 mlx4_warn(dev, "Sending vhcr0\n");
1204 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
1205 MLX4_COMM_TIME))
1206 goto err;
1207 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
1208 MLX4_COMM_TIME))
1209 goto err;
1210 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
1211 MLX4_COMM_TIME))
1212 goto err;
1213 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma, MLX4_COMM_TIME))
1214 goto err;
1215 up(&priv->cmd.slave_sem);
1216 return 0;
1217
1218 err:
1219 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, 0);
1220 up(&priv->cmd.slave_sem);
1221 return -EIO;
1222 }
1223
1224 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
1225 {
1226 int i;
1227
1228 for (i = 1; i <= dev->caps.num_ports; i++) {
1229 dev->caps.gid_table_len[i] = 1;
1230 dev->caps.pkey_table_len[i] =
1231 dev->phys_caps.pkey_phys_table_len[i] - 1;
1232 }
1233 }
1234
1235 static int mlx4_init_hca(struct mlx4_dev *dev)
1236 {
1237 struct mlx4_priv *priv = mlx4_priv(dev);
1238 struct mlx4_adapter adapter;
1239 struct mlx4_dev_cap dev_cap;
1240 struct mlx4_mod_stat_cfg mlx4_cfg;
1241 struct mlx4_profile profile;
1242 struct mlx4_init_hca_param init_hca;
1243 u64 icm_size;
1244 int err;
1245
1246 if (!mlx4_is_slave(dev)) {
1247 err = mlx4_QUERY_FW(dev);
1248 if (err) {
1249 if (err == -EACCES)
1250 mlx4_info(dev, "non-primary physical function, skipping.\n");
1251 else
1252 mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
1253 return err;
1254 }
1255
1256 err = mlx4_load_fw(dev);
1257 if (err) {
1258 mlx4_err(dev, "Failed to start FW, aborting.\n");
1259 return err;
1260 }
1261
1262 mlx4_cfg.log_pg_sz_m = 1;
1263 mlx4_cfg.log_pg_sz = 0;
1264 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
1265 if (err)
1266 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
1267
1268 err = mlx4_dev_cap(dev, &dev_cap);
1269 if (err) {
1270 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
1271 goto err_stop_fw;
1272 }
1273
1274 if (mlx4_is_master(dev))
1275 mlx4_parav_master_pf_caps(dev);
1276
1277 priv->fs_hash_mode = MLX4_FS_L2_HASH;
1278
1279 switch (priv->fs_hash_mode) {
1280 case MLX4_FS_L2_HASH:
1281 init_hca.fs_hash_enable_bits = 0;
1282 break;
1283
1284 case MLX4_FS_L2_L3_L4_HASH:
1285 /* Enable flow steering with
1286 * udp unicast and tcp unicast
1287 */
1288 init_hca.fs_hash_enable_bits =
1289 MLX4_FS_UDP_UC_EN | MLX4_FS_TCP_UC_EN;
1290 break;
1291 }
1292
1293 profile = default_profile;
1294 if (dev->caps.steering_mode ==
1295 MLX4_STEERING_MODE_DEVICE_MANAGED)
1296 profile.num_mcg = MLX4_FS_NUM_MCG;
1297
1298 icm_size = mlx4_make_profile(dev, &profile, &dev_cap,
1299 &init_hca);
1300 if ((long long) icm_size < 0) {
1301 err = icm_size;
1302 goto err_stop_fw;
1303 }
1304
1305 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
1306
1307 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
1308 init_hca.uar_page_sz = PAGE_SHIFT - 12;
1309
1310 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
1311 if (err)
1312 goto err_stop_fw;
1313
1314 err = mlx4_INIT_HCA(dev, &init_hca);
1315 if (err) {
1316 mlx4_err(dev, "INIT_HCA command failed, aborting.\n");
1317 goto err_free_icm;
1318 }
1319 } else {
1320 err = mlx4_init_slave(dev);
1321 if (err) {
1322 mlx4_err(dev, "Failed to initialize slave\n");
1323 return err;
1324 }
1325
1326 err = mlx4_slave_cap(dev);
1327 if (err) {
1328 mlx4_err(dev, "Failed to obtain slave caps\n");
1329 goto err_close;
1330 }
1331 }
1332
1333 if (map_bf_area(dev))
1334 mlx4_dbg(dev, "Failed to map blue flame area\n");
1335
1336 /*Only the master set the ports, all the rest got it from it.*/
1337 if (!mlx4_is_slave(dev))
1338 mlx4_set_port_mask(dev);
1339
1340 err = mlx4_QUERY_ADAPTER(dev, &adapter);
1341 if (err) {
1342 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting.\n");
1343 goto unmap_bf;
1344 }
1345
1346 priv->eq_table.inta_pin = adapter.inta_pin;
1347 memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
1348
1349 return 0;
1350
1351 unmap_bf:
1352 unmap_bf_area(dev);
1353
1354 err_close:
1355 mlx4_close_hca(dev);
1356
1357 err_free_icm:
1358 if (!mlx4_is_slave(dev))
1359 mlx4_free_icms(dev);
1360
1361 err_stop_fw:
1362 if (!mlx4_is_slave(dev)) {
1363 mlx4_UNMAP_FA(dev);
1364 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1365 }
1366 return err;
1367 }
1368
1369 static int mlx4_init_counters_table(struct mlx4_dev *dev)
1370 {
1371 struct mlx4_priv *priv = mlx4_priv(dev);
1372 int nent;
1373
1374 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1375 return -ENOENT;
1376
1377 nent = dev->caps.max_counters;
1378 return mlx4_bitmap_init(&priv->counters_bitmap, nent, nent - 1, 0, 0);
1379 }
1380
1381 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
1382 {
1383 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
1384 }
1385
1386 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1387 {
1388 struct mlx4_priv *priv = mlx4_priv(dev);
1389
1390 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1391 return -ENOENT;
1392
1393 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
1394 if (*idx == -1)
1395 return -ENOMEM;
1396
1397 return 0;
1398 }
1399
1400 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1401 {
1402 u64 out_param;
1403 int err;
1404
1405 if (mlx4_is_mfunc(dev)) {
1406 err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
1407 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
1408 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
1409 if (!err)
1410 *idx = get_param_l(&out_param);
1411
1412 return err;
1413 }
1414 return __mlx4_counter_alloc(dev, idx);
1415 }
1416 EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
1417
1418 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1419 {
1420 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx);
1421 return;
1422 }
1423
1424 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1425 {
1426 u64 in_param;
1427
1428 if (mlx4_is_mfunc(dev)) {
1429 set_param_l(&in_param, idx);
1430 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
1431 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
1432 MLX4_CMD_WRAPPED);
1433 return;
1434 }
1435 __mlx4_counter_free(dev, idx);
1436 }
1437 EXPORT_SYMBOL_GPL(mlx4_counter_free);
1438
1439 static int mlx4_setup_hca(struct mlx4_dev *dev)
1440 {
1441 struct mlx4_priv *priv = mlx4_priv(dev);
1442 int err;
1443 int port;
1444 __be32 ib_port_default_caps;
1445
1446 err = mlx4_init_uar_table(dev);
1447 if (err) {
1448 mlx4_err(dev, "Failed to initialize "
1449 "user access region table, aborting.\n");
1450 return err;
1451 }
1452
1453 err = mlx4_uar_alloc(dev, &priv->driver_uar);
1454 if (err) {
1455 mlx4_err(dev, "Failed to allocate driver access region, "
1456 "aborting.\n");
1457 goto err_uar_table_free;
1458 }
1459
1460 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
1461 if (!priv->kar) {
1462 mlx4_err(dev, "Couldn't map kernel access region, "
1463 "aborting.\n");
1464 err = -ENOMEM;
1465 goto err_uar_free;
1466 }
1467
1468 err = mlx4_init_pd_table(dev);
1469 if (err) {
1470 mlx4_err(dev, "Failed to initialize "
1471 "protection domain table, aborting.\n");
1472 goto err_kar_unmap;
1473 }
1474
1475 err = mlx4_init_xrcd_table(dev);
1476 if (err) {
1477 mlx4_err(dev, "Failed to initialize "
1478 "reliable connection domain table, aborting.\n");
1479 goto err_pd_table_free;
1480 }
1481
1482 err = mlx4_init_mr_table(dev);
1483 if (err) {
1484 mlx4_err(dev, "Failed to initialize "
1485 "memory region table, aborting.\n");
1486 goto err_xrcd_table_free;
1487 }
1488
1489 err = mlx4_init_eq_table(dev);
1490 if (err) {
1491 mlx4_err(dev, "Failed to initialize "
1492 "event queue table, aborting.\n");
1493 goto err_mr_table_free;
1494 }
1495
1496 err = mlx4_cmd_use_events(dev);
1497 if (err) {
1498 mlx4_err(dev, "Failed to switch to event-driven "
1499 "firmware commands, aborting.\n");
1500 goto err_eq_table_free;
1501 }
1502
1503 err = mlx4_NOP(dev);
1504 if (err) {
1505 if (dev->flags & MLX4_FLAG_MSI_X) {
1506 mlx4_warn(dev, "NOP command failed to generate MSI-X "
1507 "interrupt IRQ %d).\n",
1508 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1509 mlx4_warn(dev, "Trying again without MSI-X.\n");
1510 } else {
1511 mlx4_err(dev, "NOP command failed to generate interrupt "
1512 "(IRQ %d), aborting.\n",
1513 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1514 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
1515 }
1516
1517 goto err_cmd_poll;
1518 }
1519
1520 mlx4_dbg(dev, "NOP command IRQ test passed\n");
1521
1522 err = mlx4_init_cq_table(dev);
1523 if (err) {
1524 mlx4_err(dev, "Failed to initialize "
1525 "completion queue table, aborting.\n");
1526 goto err_cmd_poll;
1527 }
1528
1529 err = mlx4_init_srq_table(dev);
1530 if (err) {
1531 mlx4_err(dev, "Failed to initialize "
1532 "shared receive queue table, aborting.\n");
1533 goto err_cq_table_free;
1534 }
1535
1536 err = mlx4_init_qp_table(dev);
1537 if (err) {
1538 mlx4_err(dev, "Failed to initialize "
1539 "queue pair table, aborting.\n");
1540 goto err_srq_table_free;
1541 }
1542
1543 if (!mlx4_is_slave(dev)) {
1544 err = mlx4_init_mcg_table(dev);
1545 if (err) {
1546 mlx4_err(dev, "Failed to initialize "
1547 "multicast group table, aborting.\n");
1548 goto err_qp_table_free;
1549 }
1550 }
1551
1552 err = mlx4_init_counters_table(dev);
1553 if (err && err != -ENOENT) {
1554 mlx4_err(dev, "Failed to initialize counters table, aborting.\n");
1555 goto err_mcg_table_free;
1556 }
1557
1558 if (!mlx4_is_slave(dev)) {
1559 for (port = 1; port <= dev->caps.num_ports; port++) {
1560 ib_port_default_caps = 0;
1561 err = mlx4_get_port_ib_caps(dev, port,
1562 &ib_port_default_caps);
1563 if (err)
1564 mlx4_warn(dev, "failed to get port %d default "
1565 "ib capabilities (%d). Continuing "
1566 "with caps = 0\n", port, err);
1567 dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
1568
1569 /* initialize per-slave default ib port capabilities */
1570 if (mlx4_is_master(dev)) {
1571 int i;
1572 for (i = 0; i < dev->num_slaves; i++) {
1573 if (i == mlx4_master_func_num(dev))
1574 continue;
1575 priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
1576 ib_port_default_caps;
1577 }
1578 }
1579
1580 if (mlx4_is_mfunc(dev))
1581 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
1582 else
1583 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
1584
1585 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
1586 dev->caps.pkey_table_len[port] : -1);
1587 if (err) {
1588 mlx4_err(dev, "Failed to set port %d, aborting\n",
1589 port);
1590 goto err_counters_table_free;
1591 }
1592 }
1593 }
1594
1595 return 0;
1596
1597 err_counters_table_free:
1598 mlx4_cleanup_counters_table(dev);
1599
1600 err_mcg_table_free:
1601 mlx4_cleanup_mcg_table(dev);
1602
1603 err_qp_table_free:
1604 mlx4_cleanup_qp_table(dev);
1605
1606 err_srq_table_free:
1607 mlx4_cleanup_srq_table(dev);
1608
1609 err_cq_table_free:
1610 mlx4_cleanup_cq_table(dev);
1611
1612 err_cmd_poll:
1613 mlx4_cmd_use_polling(dev);
1614
1615 err_eq_table_free:
1616 mlx4_cleanup_eq_table(dev);
1617
1618 err_mr_table_free:
1619 mlx4_cleanup_mr_table(dev);
1620
1621 err_xrcd_table_free:
1622 mlx4_cleanup_xrcd_table(dev);
1623
1624 err_pd_table_free:
1625 mlx4_cleanup_pd_table(dev);
1626
1627 err_kar_unmap:
1628 iounmap(priv->kar);
1629
1630 err_uar_free:
1631 mlx4_uar_free(dev, &priv->driver_uar);
1632
1633 err_uar_table_free:
1634 mlx4_cleanup_uar_table(dev);
1635 return err;
1636 }
1637
1638 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
1639 {
1640 struct mlx4_priv *priv = mlx4_priv(dev);
1641 struct msix_entry *entries;
1642 int nreq = min_t(int, dev->caps.num_ports *
1643 min_t(int, netif_get_num_default_rss_queues() + 1,
1644 MAX_MSIX_P_PORT) + MSIX_LEGACY_SZ, MAX_MSIX);
1645 int err;
1646 int i;
1647
1648 if (msi_x) {
1649 /* In multifunction mode each function gets 2 msi-X vectors
1650 * one for data path completions anf the other for asynch events
1651 * or command completions */
1652 if (mlx4_is_mfunc(dev)) {
1653 nreq = 2;
1654 } else {
1655 nreq = min_t(int, dev->caps.num_eqs -
1656 dev->caps.reserved_eqs, nreq);
1657 }
1658
1659 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
1660 if (!entries)
1661 goto no_msi;
1662
1663 for (i = 0; i < nreq; ++i)
1664 entries[i].entry = i;
1665
1666 retry:
1667 err = pci_enable_msix(dev->pdev, entries, nreq);
1668 if (err) {
1669 /* Try again if at least 2 vectors are available */
1670 if (err > 1) {
1671 mlx4_info(dev, "Requested %d vectors, "
1672 "but only %d MSI-X vectors available, "
1673 "trying again\n", nreq, err);
1674 nreq = err;
1675 goto retry;
1676 }
1677 kfree(entries);
1678 goto no_msi;
1679 }
1680
1681 if (nreq <
1682 MSIX_LEGACY_SZ + dev->caps.num_ports * MIN_MSIX_P_PORT) {
1683 /*Working in legacy mode , all EQ's shared*/
1684 dev->caps.comp_pool = 0;
1685 dev->caps.num_comp_vectors = nreq - 1;
1686 } else {
1687 dev->caps.comp_pool = nreq - MSIX_LEGACY_SZ;
1688 dev->caps.num_comp_vectors = MSIX_LEGACY_SZ - 1;
1689 }
1690 for (i = 0; i < nreq; ++i)
1691 priv->eq_table.eq[i].irq = entries[i].vector;
1692
1693 dev->flags |= MLX4_FLAG_MSI_X;
1694
1695 kfree(entries);
1696 return;
1697 }
1698
1699 no_msi:
1700 dev->caps.num_comp_vectors = 1;
1701 dev->caps.comp_pool = 0;
1702
1703 for (i = 0; i < 2; ++i)
1704 priv->eq_table.eq[i].irq = dev->pdev->irq;
1705 }
1706
1707 static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
1708 {
1709 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
1710 int err = 0;
1711
1712 info->dev = dev;
1713 info->port = port;
1714 if (!mlx4_is_slave(dev)) {
1715 INIT_RADIX_TREE(&info->mac_tree, GFP_KERNEL);
1716 mlx4_init_mac_table(dev, &info->mac_table);
1717 mlx4_init_vlan_table(dev, &info->vlan_table);
1718 info->base_qpn =
1719 dev->caps.reserved_qps_base[MLX4_QP_REGION_ETH_ADDR] +
1720 (port - 1) * (1 << log_num_mac);
1721 }
1722
1723 sprintf(info->dev_name, "mlx4_port%d", port);
1724 info->port_attr.attr.name = info->dev_name;
1725 if (mlx4_is_mfunc(dev))
1726 info->port_attr.attr.mode = S_IRUGO;
1727 else {
1728 info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
1729 info->port_attr.store = set_port_type;
1730 }
1731 info->port_attr.show = show_port_type;
1732 sysfs_attr_init(&info->port_attr.attr);
1733
1734 err = device_create_file(&dev->pdev->dev, &info->port_attr);
1735 if (err) {
1736 mlx4_err(dev, "Failed to create file for port %d\n", port);
1737 info->port = -1;
1738 }
1739
1740 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
1741 info->port_mtu_attr.attr.name = info->dev_mtu_name;
1742 if (mlx4_is_mfunc(dev))
1743 info->port_mtu_attr.attr.mode = S_IRUGO;
1744 else {
1745 info->port_mtu_attr.attr.mode = S_IRUGO | S_IWUSR;
1746 info->port_mtu_attr.store = set_port_ib_mtu;
1747 }
1748 info->port_mtu_attr.show = show_port_ib_mtu;
1749 sysfs_attr_init(&info->port_mtu_attr.attr);
1750
1751 err = device_create_file(&dev->pdev->dev, &info->port_mtu_attr);
1752 if (err) {
1753 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
1754 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
1755 info->port = -1;
1756 }
1757
1758 return err;
1759 }
1760
1761 static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
1762 {
1763 if (info->port < 0)
1764 return;
1765
1766 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
1767 device_remove_file(&info->dev->pdev->dev, &info->port_mtu_attr);
1768 }
1769
1770 static int mlx4_init_steering(struct mlx4_dev *dev)
1771 {
1772 struct mlx4_priv *priv = mlx4_priv(dev);
1773 int num_entries = dev->caps.num_ports;
1774 int i, j;
1775
1776 priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL);
1777 if (!priv->steer)
1778 return -ENOMEM;
1779
1780 for (i = 0; i < num_entries; i++)
1781 for (j = 0; j < MLX4_NUM_STEERS; j++) {
1782 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
1783 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
1784 }
1785 return 0;
1786 }
1787
1788 static void mlx4_clear_steering(struct mlx4_dev *dev)
1789 {
1790 struct mlx4_priv *priv = mlx4_priv(dev);
1791 struct mlx4_steer_index *entry, *tmp_entry;
1792 struct mlx4_promisc_qp *pqp, *tmp_pqp;
1793 int num_entries = dev->caps.num_ports;
1794 int i, j;
1795
1796 for (i = 0; i < num_entries; i++) {
1797 for (j = 0; j < MLX4_NUM_STEERS; j++) {
1798 list_for_each_entry_safe(pqp, tmp_pqp,
1799 &priv->steer[i].promisc_qps[j],
1800 list) {
1801 list_del(&pqp->list);
1802 kfree(pqp);
1803 }
1804 list_for_each_entry_safe(entry, tmp_entry,
1805 &priv->steer[i].steer_entries[j],
1806 list) {
1807 list_del(&entry->list);
1808 list_for_each_entry_safe(pqp, tmp_pqp,
1809 &entry->duplicates,
1810 list) {
1811 list_del(&pqp->list);
1812 kfree(pqp);
1813 }
1814 kfree(entry);
1815 }
1816 }
1817 }
1818 kfree(priv->steer);
1819 }
1820
1821 static int extended_func_num(struct pci_dev *pdev)
1822 {
1823 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
1824 }
1825
1826 #define MLX4_OWNER_BASE 0x8069c
1827 #define MLX4_OWNER_SIZE 4
1828
1829 static int mlx4_get_ownership(struct mlx4_dev *dev)
1830 {
1831 void __iomem *owner;
1832 u32 ret;
1833
1834 if (pci_channel_offline(dev->pdev))
1835 return -EIO;
1836
1837 owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
1838 MLX4_OWNER_SIZE);
1839 if (!owner) {
1840 mlx4_err(dev, "Failed to obtain ownership bit\n");
1841 return -ENOMEM;
1842 }
1843
1844 ret = readl(owner);
1845 iounmap(owner);
1846 return (int) !!ret;
1847 }
1848
1849 static void mlx4_free_ownership(struct mlx4_dev *dev)
1850 {
1851 void __iomem *owner;
1852
1853 if (pci_channel_offline(dev->pdev))
1854 return;
1855
1856 owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
1857 MLX4_OWNER_SIZE);
1858 if (!owner) {
1859 mlx4_err(dev, "Failed to obtain ownership bit\n");
1860 return;
1861 }
1862 writel(0, owner);
1863 msleep(1000);
1864 iounmap(owner);
1865 }
1866
1867 static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
1868 {
1869 struct mlx4_priv *priv;
1870 struct mlx4_dev *dev;
1871 int err;
1872 int port;
1873
1874 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
1875
1876 err = pci_enable_device(pdev);
1877 if (err) {
1878 dev_err(&pdev->dev, "Cannot enable PCI device, "
1879 "aborting.\n");
1880 return err;
1881 }
1882 if (num_vfs > MLX4_MAX_NUM_VF) {
1883 printk(KERN_ERR "There are more VF's (%d) than allowed(%d)\n",
1884 num_vfs, MLX4_MAX_NUM_VF);
1885 return -EINVAL;
1886 }
1887 /*
1888 * Check for BARs.
1889 */
1890 if (((id == NULL) || !(id->driver_data & MLX4_VF)) &&
1891 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1892 dev_err(&pdev->dev, "Missing DCS, aborting."
1893 "(id == 0X%p, id->driver_data: 0x%lx,"
1894 " pci_resource_flags(pdev, 0):0x%lx)\n", id,
1895 id ? id->driver_data : 0, pci_resource_flags(pdev, 0));
1896 err = -ENODEV;
1897 goto err_disable_pdev;
1898 }
1899 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
1900 dev_err(&pdev->dev, "Missing UAR, aborting.\n");
1901 err = -ENODEV;
1902 goto err_disable_pdev;
1903 }
1904
1905 err = pci_request_regions(pdev, DRV_NAME);
1906 if (err) {
1907 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
1908 goto err_disable_pdev;
1909 }
1910
1911 pci_set_master(pdev);
1912
1913 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1914 if (err) {
1915 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
1916 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1917 if (err) {
1918 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
1919 goto err_release_regions;
1920 }
1921 }
1922 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1923 if (err) {
1924 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
1925 "consistent PCI DMA mask.\n");
1926 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1927 if (err) {
1928 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
1929 "aborting.\n");
1930 goto err_release_regions;
1931 }
1932 }
1933
1934 /* Allow large DMA segments, up to the firmware limit of 1 GB */
1935 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
1936
1937 priv = kzalloc(sizeof *priv, GFP_KERNEL);
1938 if (!priv) {
1939 dev_err(&pdev->dev, "Device struct alloc failed, "
1940 "aborting.\n");
1941 err = -ENOMEM;
1942 goto err_release_regions;
1943 }
1944
1945 dev = &priv->dev;
1946 dev->pdev = pdev;
1947 INIT_LIST_HEAD(&priv->ctx_list);
1948 spin_lock_init(&priv->ctx_lock);
1949
1950 mutex_init(&priv->port_mutex);
1951
1952 INIT_LIST_HEAD(&priv->pgdir_list);
1953 mutex_init(&priv->pgdir_mutex);
1954
1955 INIT_LIST_HEAD(&priv->bf_list);
1956 mutex_init(&priv->bf_mutex);
1957
1958 dev->rev_id = pdev->revision;
1959 /* Detect if this device is a virtual function */
1960 if (id && id->driver_data & MLX4_VF) {
1961 /* When acting as pf, we normally skip vfs unless explicitly
1962 * requested to probe them. */
1963 if (num_vfs && extended_func_num(pdev) > probe_vf) {
1964 mlx4_warn(dev, "Skipping virtual function:%d\n",
1965 extended_func_num(pdev));
1966 err = -ENODEV;
1967 goto err_free_dev;
1968 }
1969 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
1970 dev->flags |= MLX4_FLAG_SLAVE;
1971 } else {
1972 /* We reset the device and enable SRIOV only for physical
1973 * devices. Try to claim ownership on the device;
1974 * if already taken, skip -- do not allow multiple PFs */
1975 err = mlx4_get_ownership(dev);
1976 if (err) {
1977 if (err < 0)
1978 goto err_free_dev;
1979 else {
1980 mlx4_warn(dev, "Multiple PFs not yet supported."
1981 " Skipping PF.\n");
1982 err = -EINVAL;
1983 goto err_free_dev;
1984 }
1985 }
1986
1987 if (num_vfs) {
1988 mlx4_warn(dev, "Enabling sriov with:%d vfs\n", num_vfs);
1989 err = pci_enable_sriov(pdev, num_vfs);
1990 if (err) {
1991 mlx4_err(dev, "Failed to enable sriov,"
1992 "continuing without sriov enabled"
1993 " (err = %d).\n", err);
1994 err = 0;
1995 } else {
1996 mlx4_warn(dev, "Running in master mode\n");
1997 dev->flags |= MLX4_FLAG_SRIOV |
1998 MLX4_FLAG_MASTER;
1999 dev->num_vfs = num_vfs;
2000 }
2001 }
2002
2003 /*
2004 * Now reset the HCA before we touch the PCI capabilities or
2005 * attempt a firmware command, since a boot ROM may have left
2006 * the HCA in an undefined state.
2007 */
2008 err = mlx4_reset(dev);
2009 if (err) {
2010 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
2011 goto err_rel_own;
2012 }
2013 }
2014
2015 slave_start:
2016 err = mlx4_cmd_init(dev);
2017 if (err) {
2018 mlx4_err(dev, "Failed to init command interface, aborting.\n");
2019 goto err_sriov;
2020 }
2021
2022 /* In slave functions, the communication channel must be initialized
2023 * before posting commands. Also, init num_slaves before calling
2024 * mlx4_init_hca */
2025 if (mlx4_is_mfunc(dev)) {
2026 if (mlx4_is_master(dev))
2027 dev->num_slaves = MLX4_MAX_NUM_SLAVES;
2028 else {
2029 dev->num_slaves = 0;
2030 if (mlx4_multi_func_init(dev)) {
2031 mlx4_err(dev, "Failed to init slave mfunc"
2032 " interface, aborting.\n");
2033 goto err_cmd;
2034 }
2035 }
2036 }
2037
2038 err = mlx4_init_hca(dev);
2039 if (err) {
2040 if (err == -EACCES) {
2041 /* Not primary Physical function
2042 * Running in slave mode */
2043 mlx4_cmd_cleanup(dev);
2044 dev->flags |= MLX4_FLAG_SLAVE;
2045 dev->flags &= ~MLX4_FLAG_MASTER;
2046 goto slave_start;
2047 } else
2048 goto err_mfunc;
2049 }
2050
2051 /* In master functions, the communication channel must be initialized
2052 * after obtaining its address from fw */
2053 if (mlx4_is_master(dev)) {
2054 if (mlx4_multi_func_init(dev)) {
2055 mlx4_err(dev, "Failed to init master mfunc"
2056 "interface, aborting.\n");
2057 goto err_close;
2058 }
2059 }
2060
2061 err = mlx4_alloc_eq_table(dev);
2062 if (err)
2063 goto err_master_mfunc;
2064
2065 priv->msix_ctl.pool_bm = 0;
2066 mutex_init(&priv->msix_ctl.pool_lock);
2067
2068 mlx4_enable_msi_x(dev);
2069 if ((mlx4_is_mfunc(dev)) &&
2070 !(dev->flags & MLX4_FLAG_MSI_X)) {
2071 mlx4_err(dev, "INTx is not supported in multi-function mode."
2072 " aborting.\n");
2073 goto err_free_eq;
2074 }
2075
2076 if (!mlx4_is_slave(dev)) {
2077 err = mlx4_init_steering(dev);
2078 if (err)
2079 goto err_free_eq;
2080 }
2081
2082 err = mlx4_setup_hca(dev);
2083 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
2084 !mlx4_is_mfunc(dev)) {
2085 dev->flags &= ~MLX4_FLAG_MSI_X;
2086 dev->caps.num_comp_vectors = 1;
2087 dev->caps.comp_pool = 0;
2088 pci_disable_msix(pdev);
2089 err = mlx4_setup_hca(dev);
2090 }
2091
2092 if (err)
2093 goto err_steer;
2094
2095 for (port = 1; port <= dev->caps.num_ports; port++) {
2096 err = mlx4_init_port_info(dev, port);
2097 if (err)
2098 goto err_port;
2099 }
2100
2101 err = mlx4_register_device(dev);
2102 if (err)
2103 goto err_port;
2104
2105 mlx4_sense_init(dev);
2106 mlx4_start_sense(dev);
2107
2108 pci_set_drvdata(pdev, dev);
2109
2110 return 0;
2111
2112 err_port:
2113 for (--port; port >= 1; --port)
2114 mlx4_cleanup_port_info(&priv->port[port]);
2115
2116 mlx4_cleanup_counters_table(dev);
2117 mlx4_cleanup_mcg_table(dev);
2118 mlx4_cleanup_qp_table(dev);
2119 mlx4_cleanup_srq_table(dev);
2120 mlx4_cleanup_cq_table(dev);
2121 mlx4_cmd_use_polling(dev);
2122 mlx4_cleanup_eq_table(dev);
2123 mlx4_cleanup_mr_table(dev);
2124 mlx4_cleanup_xrcd_table(dev);
2125 mlx4_cleanup_pd_table(dev);
2126 mlx4_cleanup_uar_table(dev);
2127
2128 err_steer:
2129 if (!mlx4_is_slave(dev))
2130 mlx4_clear_steering(dev);
2131
2132 err_free_eq:
2133 mlx4_free_eq_table(dev);
2134
2135 err_master_mfunc:
2136 if (mlx4_is_master(dev))
2137 mlx4_multi_func_cleanup(dev);
2138
2139 err_close:
2140 if (dev->flags & MLX4_FLAG_MSI_X)
2141 pci_disable_msix(pdev);
2142
2143 mlx4_close_hca(dev);
2144
2145 err_mfunc:
2146 if (mlx4_is_slave(dev))
2147 mlx4_multi_func_cleanup(dev);
2148
2149 err_cmd:
2150 mlx4_cmd_cleanup(dev);
2151
2152 err_sriov:
2153 if (dev->flags & MLX4_FLAG_SRIOV)
2154 pci_disable_sriov(pdev);
2155
2156 err_rel_own:
2157 if (!mlx4_is_slave(dev))
2158 mlx4_free_ownership(dev);
2159
2160 err_free_dev:
2161 kfree(priv);
2162
2163 err_release_regions:
2164 pci_release_regions(pdev);
2165
2166 err_disable_pdev:
2167 pci_disable_device(pdev);
2168 pci_set_drvdata(pdev, NULL);
2169 return err;
2170 }
2171
2172 static int __devinit mlx4_init_one(struct pci_dev *pdev,
2173 const struct pci_device_id *id)
2174 {
2175 printk_once(KERN_INFO "%s", mlx4_version);
2176
2177 return __mlx4_init_one(pdev, id);
2178 }
2179
2180 static void mlx4_remove_one(struct pci_dev *pdev)
2181 {
2182 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2183 struct mlx4_priv *priv = mlx4_priv(dev);
2184 int p;
2185
2186 if (dev) {
2187 /* in SRIOV it is not allowed to unload the pf's
2188 * driver while there are alive vf's */
2189 if (mlx4_is_master(dev)) {
2190 if (mlx4_how_many_lives_vf(dev))
2191 printk(KERN_ERR "Removing PF when there are assigned VF's !!!\n");
2192 }
2193 mlx4_stop_sense(dev);
2194 mlx4_unregister_device(dev);
2195
2196 for (p = 1; p <= dev->caps.num_ports; p++) {
2197 mlx4_cleanup_port_info(&priv->port[p]);
2198 mlx4_CLOSE_PORT(dev, p);
2199 }
2200
2201 if (mlx4_is_master(dev))
2202 mlx4_free_resource_tracker(dev,
2203 RES_TR_FREE_SLAVES_ONLY);
2204
2205 mlx4_cleanup_counters_table(dev);
2206 mlx4_cleanup_mcg_table(dev);
2207 mlx4_cleanup_qp_table(dev);
2208 mlx4_cleanup_srq_table(dev);
2209 mlx4_cleanup_cq_table(dev);
2210 mlx4_cmd_use_polling(dev);
2211 mlx4_cleanup_eq_table(dev);
2212 mlx4_cleanup_mr_table(dev);
2213 mlx4_cleanup_xrcd_table(dev);
2214 mlx4_cleanup_pd_table(dev);
2215
2216 if (mlx4_is_master(dev))
2217 mlx4_free_resource_tracker(dev,
2218 RES_TR_FREE_STRUCTS_ONLY);
2219
2220 iounmap(priv->kar);
2221 mlx4_uar_free(dev, &priv->driver_uar);
2222 mlx4_cleanup_uar_table(dev);
2223 if (!mlx4_is_slave(dev))
2224 mlx4_clear_steering(dev);
2225 mlx4_free_eq_table(dev);
2226 if (mlx4_is_master(dev))
2227 mlx4_multi_func_cleanup(dev);
2228 mlx4_close_hca(dev);
2229 if (mlx4_is_slave(dev))
2230 mlx4_multi_func_cleanup(dev);
2231 mlx4_cmd_cleanup(dev);
2232
2233 if (dev->flags & MLX4_FLAG_MSI_X)
2234 pci_disable_msix(pdev);
2235 if (dev->flags & MLX4_FLAG_SRIOV) {
2236 mlx4_warn(dev, "Disabling sriov\n");
2237 pci_disable_sriov(pdev);
2238 }
2239
2240 if (!mlx4_is_slave(dev))
2241 mlx4_free_ownership(dev);
2242 kfree(priv);
2243 pci_release_regions(pdev);
2244 pci_disable_device(pdev);
2245 pci_set_drvdata(pdev, NULL);
2246 }
2247 }
2248
2249 int mlx4_restart_one(struct pci_dev *pdev)
2250 {
2251 mlx4_remove_one(pdev);
2252 return __mlx4_init_one(pdev, NULL);
2253 }
2254
2255 static DEFINE_PCI_DEVICE_TABLE(mlx4_pci_table) = {
2256 /* MT25408 "Hermon" SDR */
2257 { PCI_VDEVICE(MELLANOX, 0x6340), 0 },
2258 /* MT25408 "Hermon" DDR */
2259 { PCI_VDEVICE(MELLANOX, 0x634a), 0 },
2260 /* MT25408 "Hermon" QDR */
2261 { PCI_VDEVICE(MELLANOX, 0x6354), 0 },
2262 /* MT25408 "Hermon" DDR PCIe gen2 */
2263 { PCI_VDEVICE(MELLANOX, 0x6732), 0 },
2264 /* MT25408 "Hermon" QDR PCIe gen2 */
2265 { PCI_VDEVICE(MELLANOX, 0x673c), 0 },
2266 /* MT25408 "Hermon" EN 10GigE */
2267 { PCI_VDEVICE(MELLANOX, 0x6368), 0 },
2268 /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
2269 { PCI_VDEVICE(MELLANOX, 0x6750), 0 },
2270 /* MT25458 ConnectX EN 10GBASE-T 10GigE */
2271 { PCI_VDEVICE(MELLANOX, 0x6372), 0 },
2272 /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
2273 { PCI_VDEVICE(MELLANOX, 0x675a), 0 },
2274 /* MT26468 ConnectX EN 10GigE PCIe gen2*/
2275 { PCI_VDEVICE(MELLANOX, 0x6764), 0 },
2276 /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */
2277 { PCI_VDEVICE(MELLANOX, 0x6746), 0 },
2278 /* MT26478 ConnectX2 40GigE PCIe gen2 */
2279 { PCI_VDEVICE(MELLANOX, 0x676e), 0 },
2280 /* MT25400 Family [ConnectX-2 Virtual Function] */
2281 { PCI_VDEVICE(MELLANOX, 0x1002), MLX4_VF },
2282 /* MT27500 Family [ConnectX-3] */
2283 { PCI_VDEVICE(MELLANOX, 0x1003), 0 },
2284 /* MT27500 Family [ConnectX-3 Virtual Function] */
2285 { PCI_VDEVICE(MELLANOX, 0x1004), MLX4_VF },
2286 { PCI_VDEVICE(MELLANOX, 0x1005), 0 }, /* MT27510 Family */
2287 { PCI_VDEVICE(MELLANOX, 0x1006), 0 }, /* MT27511 Family */
2288 { PCI_VDEVICE(MELLANOX, 0x1007), 0 }, /* MT27520 Family */
2289 { PCI_VDEVICE(MELLANOX, 0x1008), 0 }, /* MT27521 Family */
2290 { PCI_VDEVICE(MELLANOX, 0x1009), 0 }, /* MT27530 Family */
2291 { PCI_VDEVICE(MELLANOX, 0x100a), 0 }, /* MT27531 Family */
2292 { PCI_VDEVICE(MELLANOX, 0x100b), 0 }, /* MT27540 Family */
2293 { PCI_VDEVICE(MELLANOX, 0x100c), 0 }, /* MT27541 Family */
2294 { PCI_VDEVICE(MELLANOX, 0x100d), 0 }, /* MT27550 Family */
2295 { PCI_VDEVICE(MELLANOX, 0x100e), 0 }, /* MT27551 Family */
2296 { PCI_VDEVICE(MELLANOX, 0x100f), 0 }, /* MT27560 Family */
2297 { PCI_VDEVICE(MELLANOX, 0x1010), 0 }, /* MT27561 Family */
2298 { 0, }
2299 };
2300
2301 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
2302
2303 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
2304 pci_channel_state_t state)
2305 {
2306 mlx4_remove_one(pdev);
2307
2308 return state == pci_channel_io_perm_failure ?
2309 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
2310 }
2311
2312 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
2313 {
2314 int ret = __mlx4_init_one(pdev, NULL);
2315
2316 return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
2317 }
2318
2319 static struct pci_error_handlers mlx4_err_handler = {
2320 .error_detected = mlx4_pci_err_detected,
2321 .slot_reset = mlx4_pci_slot_reset,
2322 };
2323
2324 static struct pci_driver mlx4_driver = {
2325 .name = DRV_NAME,
2326 .id_table = mlx4_pci_table,
2327 .probe = mlx4_init_one,
2328 .remove = __devexit_p(mlx4_remove_one),
2329 .err_handler = &mlx4_err_handler,
2330 };
2331
2332 static int __init mlx4_verify_params(void)
2333 {
2334 if ((log_num_mac < 0) || (log_num_mac > 7)) {
2335 pr_warning("mlx4_core: bad num_mac: %d\n", log_num_mac);
2336 return -1;
2337 }
2338
2339 if (log_num_vlan != 0)
2340 pr_warning("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
2341 MLX4_LOG_NUM_VLANS);
2342
2343 if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
2344 pr_warning("mlx4_core: bad log_mtts_per_seg: %d\n", log_mtts_per_seg);
2345 return -1;
2346 }
2347
2348 /* Check if module param for ports type has legal combination */
2349 if (port_type_array[0] == false && port_type_array[1] == true) {
2350 printk(KERN_WARNING "Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
2351 port_type_array[0] = true;
2352 }
2353
2354 return 0;
2355 }
2356
2357 static int __init mlx4_init(void)
2358 {
2359 int ret;
2360
2361 if (mlx4_verify_params())
2362 return -EINVAL;
2363
2364 mlx4_catas_init();
2365
2366 mlx4_wq = create_singlethread_workqueue("mlx4");
2367 if (!mlx4_wq)
2368 return -ENOMEM;
2369
2370 ret = pci_register_driver(&mlx4_driver);
2371 return ret < 0 ? ret : 0;
2372 }
2373
2374 static void __exit mlx4_cleanup(void)
2375 {
2376 pci_unregister_driver(&mlx4_driver);
2377 destroy_workqueue(mlx4_wq);
2378 }
2379
2380 module_init(mlx4_init);
2381 module_exit(mlx4_cleanup);
Linux kernel - Deliverables
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