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Adding support for MOXA ART SoC. Testing port of linux-2.6.32.60-moxart.
[linux-3.6.7-moxart.git] / drivers / net / ethernet / mellanox / mlx4 / main.c
blob2f816c6aed72da16bc6afc22c957f0b6c7a5eac0
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 return 0;
388 }
389 /*The function checks if there are live vf, return the num of them*/
390 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
391 {
392 struct mlx4_priv *priv = mlx4_priv(dev);
393 struct mlx4_slave_state *s_state;
394 int i;
395 int ret = 0;
396
397 for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
398 s_state = &priv->mfunc.master.slave_state[i];
399 if (s_state->active && s_state->last_cmd !=
400 MLX4_COMM_CMD_RESET) {
401 mlx4_warn(dev, "%s: slave: %d is still active\n",
402 __func__, i);
403 ret++;
404 }
405 }
406 return ret;
407 }
408
409 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
410 {
411 u32 qk = MLX4_RESERVED_QKEY_BASE;
412 if (qpn >= dev->caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
413 qpn < dev->caps.sqp_start)
414 return -EINVAL;
415
416 if (qpn >= dev->caps.base_tunnel_sqpn)
417 /* tunnel qp */
418 qk += qpn - dev->caps.base_tunnel_sqpn;
419 else
420 qk += qpn - dev->caps.sqp_start;
421 *qkey = qk;
422 return 0;
423 }
424 EXPORT_SYMBOL(mlx4_get_parav_qkey);
425
426 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
427 {
428 struct mlx4_priv *priv = mlx4_priv(dev);
429 struct mlx4_slave_state *s_slave;
430
431 if (!mlx4_is_master(dev))
432 return 0;
433
434 s_slave = &priv->mfunc.master.slave_state[slave];
435 return !!s_slave->active;
436 }
437 EXPORT_SYMBOL(mlx4_is_slave_active);
438
439 static int mlx4_slave_cap(struct mlx4_dev *dev)
440 {
441 int err;
442 u32 page_size;
443 struct mlx4_dev_cap dev_cap;
444 struct mlx4_func_cap func_cap;
445 struct mlx4_init_hca_param hca_param;
446 int i;
447
448 memset(&hca_param, 0, sizeof(hca_param));
449 err = mlx4_QUERY_HCA(dev, &hca_param);
450 if (err) {
451 mlx4_err(dev, "QUERY_HCA command failed, aborting.\n");
452 return err;
453 }
454
455 /*fail if the hca has an unknown capability */
456 if ((hca_param.global_caps | HCA_GLOBAL_CAP_MASK) !=
457 HCA_GLOBAL_CAP_MASK) {
458 mlx4_err(dev, "Unknown hca global capabilities\n");
459 return -ENOSYS;
460 }
461
462 mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
463
464 memset(&dev_cap, 0, sizeof(dev_cap));
465 dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
466 err = mlx4_dev_cap(dev, &dev_cap);
467 if (err) {
468 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
469 return err;
470 }
471
472 err = mlx4_QUERY_FW(dev);
473 if (err)
474 mlx4_err(dev, "QUERY_FW command failed: could not get FW version.\n");
475
476 page_size = ~dev->caps.page_size_cap + 1;
477 mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
478 if (page_size > PAGE_SIZE) {
479 mlx4_err(dev, "HCA minimum page size of %d bigger than "
480 "kernel PAGE_SIZE of %ld, aborting.\n",
481 page_size, PAGE_SIZE);
482 return -ENODEV;
483 }
484
485 /* slave gets uar page size from QUERY_HCA fw command */
486 dev->caps.uar_page_size = 1 << (hca_param.uar_page_sz + 12);
487
488 /* TODO: relax this assumption */
489 if (dev->caps.uar_page_size != PAGE_SIZE) {
490 mlx4_err(dev, "UAR size:%d != kernel PAGE_SIZE of %ld\n",
491 dev->caps.uar_page_size, PAGE_SIZE);
492 return -ENODEV;
493 }
494
495 memset(&func_cap, 0, sizeof(func_cap));
496 err = mlx4_QUERY_FUNC_CAP(dev, &func_cap);
497 if (err) {
498 mlx4_err(dev, "QUERY_FUNC_CAP command failed, aborting.\n");
499 return err;
500 }
501
502 if ((func_cap.pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
503 PF_CONTEXT_BEHAVIOUR_MASK) {
504 mlx4_err(dev, "Unknown pf context behaviour\n");
505 return -ENOSYS;
506 }
507
508 dev->caps.num_ports = func_cap.num_ports;
509 dev->caps.num_qps = func_cap.qp_quota;
510 dev->caps.num_srqs = func_cap.srq_quota;
511 dev->caps.num_cqs = func_cap.cq_quota;
512 dev->caps.num_eqs = func_cap.max_eq;
513 dev->caps.reserved_eqs = func_cap.reserved_eq;
514 dev->caps.num_mpts = func_cap.mpt_quota;
515 dev->caps.num_mtts = func_cap.mtt_quota;
516 dev->caps.num_pds = MLX4_NUM_PDS;
517 dev->caps.num_mgms = 0;
518 dev->caps.num_amgms = 0;
519
520 if (dev->caps.num_ports > MLX4_MAX_PORTS) {
521 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
522 "aborting.\n", dev->caps.num_ports, MLX4_MAX_PORTS);
523 return -ENODEV;
524 }
525
526 for (i = 1; i <= dev->caps.num_ports; ++i) {
527 dev->caps.port_mask[i] = dev->caps.port_type[i];
528 if (mlx4_get_slave_pkey_gid_tbl_len(dev, i,
529 &dev->caps.gid_table_len[i],
530 &dev->caps.pkey_table_len[i]))
531 return -ENODEV;
532 }
533
534 if (dev->caps.uar_page_size * (dev->caps.num_uars -
535 dev->caps.reserved_uars) >
536 pci_resource_len(dev->pdev, 2)) {
537 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than "
538 "PCI resource 2 size of 0x%llx, aborting.\n",
539 dev->caps.uar_page_size * dev->caps.num_uars,
540 (unsigned long long) pci_resource_len(dev->pdev, 2));
541 return -ENODEV;
542 }
543
544 return 0;
545 }
546
547 /*
548 * Change the port configuration of the device.
549 * Every user of this function must hold the port mutex.
550 */
551 int mlx4_change_port_types(struct mlx4_dev *dev,
552 enum mlx4_port_type *port_types)
553 {
554 int err = 0;
555 int change = 0;
556 int port;
557
558 for (port = 0; port < dev->caps.num_ports; port++) {
559 /* Change the port type only if the new type is different
560 * from the current, and not set to Auto */
561 if (port_types[port] != dev->caps.port_type[port + 1])
562 change = 1;
563 }
564 if (change) {
565 mlx4_unregister_device(dev);
566 for (port = 1; port <= dev->caps.num_ports; port++) {
567 mlx4_CLOSE_PORT(dev, port);
568 dev->caps.port_type[port] = port_types[port - 1];
569 err = mlx4_SET_PORT(dev, port, -1);
570 if (err) {
571 mlx4_err(dev, "Failed to set port %d, "
572 "aborting\n", port);
573 goto out;
574 }
575 }
576 mlx4_set_port_mask(dev);
577 err = mlx4_register_device(dev);
578 }
579
580 out:
581 return err;
582 }
583
584 static ssize_t show_port_type(struct device *dev,
585 struct device_attribute *attr,
586 char *buf)
587 {
588 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
589 port_attr);
590 struct mlx4_dev *mdev = info->dev;
591 char type[8];
592
593 sprintf(type, "%s",
594 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
595 "ib" : "eth");
596 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
597 sprintf(buf, "auto (%s)\n", type);
598 else
599 sprintf(buf, "%s\n", type);
600
601 return strlen(buf);
602 }
603
604 static ssize_t set_port_type(struct device *dev,
605 struct device_attribute *attr,
606 const char *buf, size_t count)
607 {
608 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
609 port_attr);
610 struct mlx4_dev *mdev = info->dev;
611 struct mlx4_priv *priv = mlx4_priv(mdev);
612 enum mlx4_port_type types[MLX4_MAX_PORTS];
613 enum mlx4_port_type new_types[MLX4_MAX_PORTS];
614 int i;
615 int err = 0;
616
617 if (!strcmp(buf, "ib\n"))
618 info->tmp_type = MLX4_PORT_TYPE_IB;
619 else if (!strcmp(buf, "eth\n"))
620 info->tmp_type = MLX4_PORT_TYPE_ETH;
621 else if (!strcmp(buf, "auto\n"))
622 info->tmp_type = MLX4_PORT_TYPE_AUTO;
623 else {
624 mlx4_err(mdev, "%s is not supported port type\n", buf);
625 return -EINVAL;
626 }
627
628 mlx4_stop_sense(mdev);
629 mutex_lock(&priv->port_mutex);
630 /* Possible type is always the one that was delivered */
631 mdev->caps.possible_type[info->port] = info->tmp_type;
632
633 for (i = 0; i < mdev->caps.num_ports; i++) {
634 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
635 mdev->caps.possible_type[i+1];
636 if (types[i] == MLX4_PORT_TYPE_AUTO)
637 types[i] = mdev->caps.port_type[i+1];
638 }
639
640 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
641 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
642 for (i = 1; i <= mdev->caps.num_ports; i++) {
643 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
644 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
645 err = -EINVAL;
646 }
647 }
648 }
649 if (err) {
650 mlx4_err(mdev, "Auto sensing is not supported on this HCA. "
651 "Set only 'eth' or 'ib' for both ports "
652 "(should be the same)\n");
653 goto out;
654 }
655
656 mlx4_do_sense_ports(mdev, new_types, types);
657
658 err = mlx4_check_port_params(mdev, new_types);
659 if (err)
660 goto out;
661
662 /* We are about to apply the changes after the configuration
663 * was verified, no need to remember the temporary types
664 * any more */
665 for (i = 0; i < mdev->caps.num_ports; i++)
666 priv->port[i + 1].tmp_type = 0;
667
668 err = mlx4_change_port_types(mdev, new_types);
669
670 out:
671 mlx4_start_sense(mdev);
672 mutex_unlock(&priv->port_mutex);
673 return err ? err : count;
674 }
675
676 enum ibta_mtu {
677 IB_MTU_256 = 1,
678 IB_MTU_512 = 2,
679 IB_MTU_1024 = 3,
680 IB_MTU_2048 = 4,
681 IB_MTU_4096 = 5
682 };
683
684 static inline int int_to_ibta_mtu(int mtu)
685 {
686 switch (mtu) {
687 case 256: return IB_MTU_256;
688 case 512: return IB_MTU_512;
689 case 1024: return IB_MTU_1024;
690 case 2048: return IB_MTU_2048;
691 case 4096: return IB_MTU_4096;
692 default: return -1;
693 }
694 }
695
696 static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
697 {
698 switch (mtu) {
699 case IB_MTU_256: return 256;
700 case IB_MTU_512: return 512;
701 case IB_MTU_1024: return 1024;
702 case IB_MTU_2048: return 2048;
703 case IB_MTU_4096: return 4096;
704 default: return -1;
705 }
706 }
707
708 static ssize_t show_port_ib_mtu(struct device *dev,
709 struct device_attribute *attr,
710 char *buf)
711 {
712 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
713 port_mtu_attr);
714 struct mlx4_dev *mdev = info->dev;
715
716 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
717 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
718
719 sprintf(buf, "%d\n",
720 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
721 return strlen(buf);
722 }
723
724 static ssize_t set_port_ib_mtu(struct device *dev,
725 struct device_attribute *attr,
726 const char *buf, size_t count)
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 struct mlx4_priv *priv = mlx4_priv(mdev);
732 int err, port, mtu, ibta_mtu = -1;
733
734 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
735 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
736 return -EINVAL;
737 }
738
739 err = sscanf(buf, "%d", &mtu);
740 if (err > 0)
741 ibta_mtu = int_to_ibta_mtu(mtu);
742
743 if (err <= 0 || ibta_mtu < 0) {
744 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
745 return -EINVAL;
746 }
747
748 mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
749
750 mlx4_stop_sense(mdev);
751 mutex_lock(&priv->port_mutex);
752 mlx4_unregister_device(mdev);
753 for (port = 1; port <= mdev->caps.num_ports; port++) {
754 mlx4_CLOSE_PORT(mdev, port);
755 err = mlx4_SET_PORT(mdev, port, -1);
756 if (err) {
757 mlx4_err(mdev, "Failed to set port %d, "
758 "aborting\n", port);
759 goto err_set_port;
760 }
761 }
762 err = mlx4_register_device(mdev);
763 err_set_port:
764 mutex_unlock(&priv->port_mutex);
765 mlx4_start_sense(mdev);
766 return err ? err : count;
767 }
768
769 static int mlx4_load_fw(struct mlx4_dev *dev)
770 {
771 struct mlx4_priv *priv = mlx4_priv(dev);
772 int err;
773
774 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
775 GFP_HIGHUSER | __GFP_NOWARN, 0);
776 if (!priv->fw.fw_icm) {
777 mlx4_err(dev, "Couldn't allocate FW area, aborting.\n");
778 return -ENOMEM;
779 }
780
781 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
782 if (err) {
783 mlx4_err(dev, "MAP_FA command failed, aborting.\n");
784 goto err_free;
785 }
786
787 err = mlx4_RUN_FW(dev);
788 if (err) {
789 mlx4_err(dev, "RUN_FW command failed, aborting.\n");
790 goto err_unmap_fa;
791 }
792
793 return 0;
794
795 err_unmap_fa:
796 mlx4_UNMAP_FA(dev);
797
798 err_free:
799 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
800 return err;
801 }
802
803 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
804 int cmpt_entry_sz)
805 {
806 struct mlx4_priv *priv = mlx4_priv(dev);
807 int err;
808 int num_eqs;
809
810 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
811 cmpt_base +
812 ((u64) (MLX4_CMPT_TYPE_QP *
813 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
814 cmpt_entry_sz, dev->caps.num_qps,
815 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
816 0, 0);
817 if (err)
818 goto err;
819
820 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
821 cmpt_base +
822 ((u64) (MLX4_CMPT_TYPE_SRQ *
823 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
824 cmpt_entry_sz, dev->caps.num_srqs,
825 dev->caps.reserved_srqs, 0, 0);
826 if (err)
827 goto err_qp;
828
829 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
830 cmpt_base +
831 ((u64) (MLX4_CMPT_TYPE_CQ *
832 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
833 cmpt_entry_sz, dev->caps.num_cqs,
834 dev->caps.reserved_cqs, 0, 0);
835 if (err)
836 goto err_srq;
837
838 num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
839 dev->caps.num_eqs;
840 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
841 cmpt_base +
842 ((u64) (MLX4_CMPT_TYPE_EQ *
843 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
844 cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
845 if (err)
846 goto err_cq;
847
848 return 0;
849
850 err_cq:
851 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
852
853 err_srq:
854 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
855
856 err_qp:
857 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
858
859 err:
860 return err;
861 }
862
863 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
864 struct mlx4_init_hca_param *init_hca, u64 icm_size)
865 {
866 struct mlx4_priv *priv = mlx4_priv(dev);
867 u64 aux_pages;
868 int num_eqs;
869 int err;
870
871 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
872 if (err) {
873 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting.\n");
874 return err;
875 }
876
877 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory.\n",
878 (unsigned long long) icm_size >> 10,
879 (unsigned long long) aux_pages << 2);
880
881 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
882 GFP_HIGHUSER | __GFP_NOWARN, 0);
883 if (!priv->fw.aux_icm) {
884 mlx4_err(dev, "Couldn't allocate aux memory, aborting.\n");
885 return -ENOMEM;
886 }
887
888 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
889 if (err) {
890 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting.\n");
891 goto err_free_aux;
892 }
893
894 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
895 if (err) {
896 mlx4_err(dev, "Failed to map cMPT context memory, aborting.\n");
897 goto err_unmap_aux;
898 }
899
900
901 num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
902 dev->caps.num_eqs;
903 err = mlx4_init_icm_table(dev, &priv->eq_table.table,
904 init_hca->eqc_base, dev_cap->eqc_entry_sz,
905 num_eqs, num_eqs, 0, 0);
906 if (err) {
907 mlx4_err(dev, "Failed to map EQ context memory, aborting.\n");
908 goto err_unmap_cmpt;
909 }
910
911 /*
912 * Reserved MTT entries must be aligned up to a cacheline
913 * boundary, since the FW will write to them, while the driver
914 * writes to all other MTT entries. (The variable
915 * dev->caps.mtt_entry_sz below is really the MTT segment
916 * size, not the raw entry size)
917 */
918 dev->caps.reserved_mtts =
919 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
920 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
921
922 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
923 init_hca->mtt_base,
924 dev->caps.mtt_entry_sz,
925 dev->caps.num_mtts,
926 dev->caps.reserved_mtts, 1, 0);
927 if (err) {
928 mlx4_err(dev, "Failed to map MTT context memory, aborting.\n");
929 goto err_unmap_eq;
930 }
931
932 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
933 init_hca->dmpt_base,
934 dev_cap->dmpt_entry_sz,
935 dev->caps.num_mpts,
936 dev->caps.reserved_mrws, 1, 1);
937 if (err) {
938 mlx4_err(dev, "Failed to map dMPT context memory, aborting.\n");
939 goto err_unmap_mtt;
940 }
941
942 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
943 init_hca->qpc_base,
944 dev_cap->qpc_entry_sz,
945 dev->caps.num_qps,
946 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
947 0, 0);
948 if (err) {
949 mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
950 goto err_unmap_dmpt;
951 }
952
953 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
954 init_hca->auxc_base,
955 dev_cap->aux_entry_sz,
956 dev->caps.num_qps,
957 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
958 0, 0);
959 if (err) {
960 mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
961 goto err_unmap_qp;
962 }
963
964 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
965 init_hca->altc_base,
966 dev_cap->altc_entry_sz,
967 dev->caps.num_qps,
968 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
969 0, 0);
970 if (err) {
971 mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
972 goto err_unmap_auxc;
973 }
974
975 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
976 init_hca->rdmarc_base,
977 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
978 dev->caps.num_qps,
979 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
980 0, 0);
981 if (err) {
982 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
983 goto err_unmap_altc;
984 }
985
986 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
987 init_hca->cqc_base,
988 dev_cap->cqc_entry_sz,
989 dev->caps.num_cqs,
990 dev->caps.reserved_cqs, 0, 0);
991 if (err) {
992 mlx4_err(dev, "Failed to map CQ context memory, aborting.\n");
993 goto err_unmap_rdmarc;
994 }
995
996 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
997 init_hca->srqc_base,
998 dev_cap->srq_entry_sz,
999 dev->caps.num_srqs,
1000 dev->caps.reserved_srqs, 0, 0);
1001 if (err) {
1002 mlx4_err(dev, "Failed to map SRQ context memory, aborting.\n");
1003 goto err_unmap_cq;
1004 }
1005
1006 /*
1007 * For flow steering device managed mode it is required to use
1008 * mlx4_init_icm_table. For B0 steering mode it's not strictly
1009 * required, but for simplicity just map the whole multicast
1010 * group table now. The table isn't very big and it's a lot
1011 * easier than trying to track ref counts.
1012 */
1013 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1014 init_hca->mc_base,
1015 mlx4_get_mgm_entry_size(dev),
1016 dev->caps.num_mgms + dev->caps.num_amgms,
1017 dev->caps.num_mgms + dev->caps.num_amgms,
1018 0, 0);
1019 if (err) {
1020 mlx4_err(dev, "Failed to map MCG context memory, aborting.\n");
1021 goto err_unmap_srq;
1022 }
1023
1024 return 0;
1025
1026 err_unmap_srq:
1027 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1028
1029 err_unmap_cq:
1030 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1031
1032 err_unmap_rdmarc:
1033 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1034
1035 err_unmap_altc:
1036 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1037
1038 err_unmap_auxc:
1039 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1040
1041 err_unmap_qp:
1042 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1043
1044 err_unmap_dmpt:
1045 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1046
1047 err_unmap_mtt:
1048 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1049
1050 err_unmap_eq:
1051 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1052
1053 err_unmap_cmpt:
1054 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1055 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1056 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1057 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1058
1059 err_unmap_aux:
1060 mlx4_UNMAP_ICM_AUX(dev);
1061
1062 err_free_aux:
1063 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1064
1065 return err;
1066 }
1067
1068 static void mlx4_free_icms(struct mlx4_dev *dev)
1069 {
1070 struct mlx4_priv *priv = mlx4_priv(dev);
1071
1072 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1073 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1074 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1075 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1076 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1077 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1078 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1079 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1080 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1081 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1082 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1083 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1084 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1085 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1086
1087 mlx4_UNMAP_ICM_AUX(dev);
1088 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1089 }
1090
1091 static void mlx4_slave_exit(struct mlx4_dev *dev)
1092 {
1093 struct mlx4_priv *priv = mlx4_priv(dev);
1094
1095 down(&priv->cmd.slave_sem);
1096 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_TIME))
1097 mlx4_warn(dev, "Failed to close slave function.\n");
1098 up(&priv->cmd.slave_sem);
1099 }
1100
1101 static int map_bf_area(struct mlx4_dev *dev)
1102 {
1103 struct mlx4_priv *priv = mlx4_priv(dev);
1104 resource_size_t bf_start;
1105 resource_size_t bf_len;
1106 int err = 0;
1107
1108 if (!dev->caps.bf_reg_size)
1109 return -ENXIO;
1110
1111 bf_start = pci_resource_start(dev->pdev, 2) +
1112 (dev->caps.num_uars << PAGE_SHIFT);
1113 bf_len = pci_resource_len(dev->pdev, 2) -
1114 (dev->caps.num_uars << PAGE_SHIFT);
1115 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1116 if (!priv->bf_mapping)
1117 err = -ENOMEM;
1118
1119 return err;
1120 }
1121
1122 static void unmap_bf_area(struct mlx4_dev *dev)
1123 {
1124 if (mlx4_priv(dev)->bf_mapping)
1125 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1126 }
1127
1128 static void mlx4_close_hca(struct mlx4_dev *dev)
1129 {
1130 unmap_bf_area(dev);
1131 if (mlx4_is_slave(dev))
1132 mlx4_slave_exit(dev);
1133 else {
1134 mlx4_CLOSE_HCA(dev, 0);
1135 mlx4_free_icms(dev);
1136 mlx4_UNMAP_FA(dev);
1137 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1138 }
1139 }
1140
1141 static int mlx4_init_slave(struct mlx4_dev *dev)
1142 {
1143 struct mlx4_priv *priv = mlx4_priv(dev);
1144 u64 dma = (u64) priv->mfunc.vhcr_dma;
1145 int num_of_reset_retries = NUM_OF_RESET_RETRIES;
1146 int ret_from_reset = 0;
1147 u32 slave_read;
1148 u32 cmd_channel_ver;
1149
1150 down(&priv->cmd.slave_sem);
1151 priv->cmd.max_cmds = 1;
1152 mlx4_warn(dev, "Sending reset\n");
1153 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
1154 MLX4_COMM_TIME);
1155 /* if we are in the middle of flr the slave will try
1156 * NUM_OF_RESET_RETRIES times before leaving.*/
1157 if (ret_from_reset) {
1158 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
1159 msleep(SLEEP_TIME_IN_RESET);
1160 while (ret_from_reset && num_of_reset_retries) {
1161 mlx4_warn(dev, "slave is currently in the"
1162 "middle of FLR. retrying..."
1163 "(try num:%d)\n",
1164 (NUM_OF_RESET_RETRIES -
1165 num_of_reset_retries + 1));
1166 ret_from_reset =
1167 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET,
1168 0, MLX4_COMM_TIME);
1169 num_of_reset_retries = num_of_reset_retries - 1;
1170 }
1171 } else
1172 goto err;
1173 }
1174
1175 /* check the driver version - the slave I/F revision
1176 * must match the master's */
1177 slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
1178 cmd_channel_ver = mlx4_comm_get_version();
1179
1180 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
1181 MLX4_COMM_GET_IF_REV(slave_read)) {
1182 mlx4_err(dev, "slave driver version is not supported"
1183 " by the master\n");
1184 goto err;
1185 }
1186
1187 mlx4_warn(dev, "Sending vhcr0\n");
1188 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
1189 MLX4_COMM_TIME))
1190 goto err;
1191 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
1192 MLX4_COMM_TIME))
1193 goto err;
1194 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
1195 MLX4_COMM_TIME))
1196 goto err;
1197 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma, MLX4_COMM_TIME))
1198 goto err;
1199 up(&priv->cmd.slave_sem);
1200 return 0;
1201
1202 err:
1203 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, 0);
1204 up(&priv->cmd.slave_sem);
1205 return -EIO;
1206 }
1207
1208 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
1209 {
1210 int i;
1211
1212 for (i = 1; i <= dev->caps.num_ports; i++) {
1213 dev->caps.gid_table_len[i] = 1;
1214 dev->caps.pkey_table_len[i] =
1215 dev->phys_caps.pkey_phys_table_len[i] - 1;
1216 }
1217 }
1218
1219 static int mlx4_init_hca(struct mlx4_dev *dev)
1220 {
1221 struct mlx4_priv *priv = mlx4_priv(dev);
1222 struct mlx4_adapter adapter;
1223 struct mlx4_dev_cap dev_cap;
1224 struct mlx4_mod_stat_cfg mlx4_cfg;
1225 struct mlx4_profile profile;
1226 struct mlx4_init_hca_param init_hca;
1227 u64 icm_size;
1228 int err;
1229
1230 if (!mlx4_is_slave(dev)) {
1231 err = mlx4_QUERY_FW(dev);
1232 if (err) {
1233 if (err == -EACCES)
1234 mlx4_info(dev, "non-primary physical function, skipping.\n");
1235 else
1236 mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
1237 return err;
1238 }
1239
1240 err = mlx4_load_fw(dev);
1241 if (err) {
1242 mlx4_err(dev, "Failed to start FW, aborting.\n");
1243 return err;
1244 }
1245
1246 mlx4_cfg.log_pg_sz_m = 1;
1247 mlx4_cfg.log_pg_sz = 0;
1248 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
1249 if (err)
1250 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
1251
1252 err = mlx4_dev_cap(dev, &dev_cap);
1253 if (err) {
1254 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
1255 goto err_stop_fw;
1256 }
1257
1258 if (mlx4_is_master(dev))
1259 mlx4_parav_master_pf_caps(dev);
1260
1261 priv->fs_hash_mode = MLX4_FS_L2_HASH;
1262
1263 switch (priv->fs_hash_mode) {
1264 case MLX4_FS_L2_HASH:
1265 init_hca.fs_hash_enable_bits = 0;
1266 break;
1267
1268 case MLX4_FS_L2_L3_L4_HASH:
1269 /* Enable flow steering with
1270 * udp unicast and tcp unicast
1271 */
1272 init_hca.fs_hash_enable_bits =
1273 MLX4_FS_UDP_UC_EN | MLX4_FS_TCP_UC_EN;
1274 break;
1275 }
1276
1277 profile = default_profile;
1278 if (dev->caps.steering_mode ==
1279 MLX4_STEERING_MODE_DEVICE_MANAGED)
1280 profile.num_mcg = MLX4_FS_NUM_MCG;
1281
1282 icm_size = mlx4_make_profile(dev, &profile, &dev_cap,
1283 &init_hca);
1284 if ((long long) icm_size < 0) {
1285 err = icm_size;
1286 goto err_stop_fw;
1287 }
1288
1289 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
1290
1291 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
1292 init_hca.uar_page_sz = PAGE_SHIFT - 12;
1293
1294 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
1295 if (err)
1296 goto err_stop_fw;
1297
1298 err = mlx4_INIT_HCA(dev, &init_hca);
1299 if (err) {
1300 mlx4_err(dev, "INIT_HCA command failed, aborting.\n");
1301 goto err_free_icm;
1302 }
1303 } else {
1304 err = mlx4_init_slave(dev);
1305 if (err) {
1306 mlx4_err(dev, "Failed to initialize slave\n");
1307 return err;
1308 }
1309
1310 err = mlx4_slave_cap(dev);
1311 if (err) {
1312 mlx4_err(dev, "Failed to obtain slave caps\n");
1313 goto err_close;
1314 }
1315 }
1316
1317 if (map_bf_area(dev))
1318 mlx4_dbg(dev, "Failed to map blue flame area\n");
1319
1320 /*Only the master set the ports, all the rest got it from it.*/
1321 if (!mlx4_is_slave(dev))
1322 mlx4_set_port_mask(dev);
1323
1324 err = mlx4_QUERY_ADAPTER(dev, &adapter);
1325 if (err) {
1326 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting.\n");
1327 goto unmap_bf;
1328 }
1329
1330 priv->eq_table.inta_pin = adapter.inta_pin;
1331 memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
1332
1333 return 0;
1334
1335 unmap_bf:
1336 unmap_bf_area(dev);
1337
1338 err_close:
1339 mlx4_close_hca(dev);
1340
1341 err_free_icm:
1342 if (!mlx4_is_slave(dev))
1343 mlx4_free_icms(dev);
1344
1345 err_stop_fw:
1346 if (!mlx4_is_slave(dev)) {
1347 mlx4_UNMAP_FA(dev);
1348 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1349 }
1350 return err;
1351 }
1352
1353 static int mlx4_init_counters_table(struct mlx4_dev *dev)
1354 {
1355 struct mlx4_priv *priv = mlx4_priv(dev);
1356 int nent;
1357
1358 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1359 return -ENOENT;
1360
1361 nent = dev->caps.max_counters;
1362 return mlx4_bitmap_init(&priv->counters_bitmap, nent, nent - 1, 0, 0);
1363 }
1364
1365 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
1366 {
1367 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
1368 }
1369
1370 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1371 {
1372 struct mlx4_priv *priv = mlx4_priv(dev);
1373
1374 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1375 return -ENOENT;
1376
1377 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
1378 if (*idx == -1)
1379 return -ENOMEM;
1380
1381 return 0;
1382 }
1383
1384 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1385 {
1386 u64 out_param;
1387 int err;
1388
1389 if (mlx4_is_mfunc(dev)) {
1390 err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
1391 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
1392 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
1393 if (!err)
1394 *idx = get_param_l(&out_param);
1395
1396 return err;
1397 }
1398 return __mlx4_counter_alloc(dev, idx);
1399 }
1400 EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
1401
1402 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1403 {
1404 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx);
1405 return;
1406 }
1407
1408 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1409 {
1410 u64 in_param;
1411
1412 if (mlx4_is_mfunc(dev)) {
1413 set_param_l(&in_param, idx);
1414 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
1415 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
1416 MLX4_CMD_WRAPPED);
1417 return;
1418 }
1419 __mlx4_counter_free(dev, idx);
1420 }
1421 EXPORT_SYMBOL_GPL(mlx4_counter_free);
1422
1423 static int mlx4_setup_hca(struct mlx4_dev *dev)
1424 {
1425 struct mlx4_priv *priv = mlx4_priv(dev);
1426 int err;
1427 int port;
1428 __be32 ib_port_default_caps;
1429
1430 err = mlx4_init_uar_table(dev);
1431 if (err) {
1432 mlx4_err(dev, "Failed to initialize "
1433 "user access region table, aborting.\n");
1434 return err;
1435 }
1436
1437 err = mlx4_uar_alloc(dev, &priv->driver_uar);
1438 if (err) {
1439 mlx4_err(dev, "Failed to allocate driver access region, "
1440 "aborting.\n");
1441 goto err_uar_table_free;
1442 }
1443
1444 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
1445 if (!priv->kar) {
1446 mlx4_err(dev, "Couldn't map kernel access region, "
1447 "aborting.\n");
1448 err = -ENOMEM;
1449 goto err_uar_free;
1450 }
1451
1452 err = mlx4_init_pd_table(dev);
1453 if (err) {
1454 mlx4_err(dev, "Failed to initialize "
1455 "protection domain table, aborting.\n");
1456 goto err_kar_unmap;
1457 }
1458
1459 err = mlx4_init_xrcd_table(dev);
1460 if (err) {
1461 mlx4_err(dev, "Failed to initialize "
1462 "reliable connection domain table, aborting.\n");
1463 goto err_pd_table_free;
1464 }
1465
1466 err = mlx4_init_mr_table(dev);
1467 if (err) {
1468 mlx4_err(dev, "Failed to initialize "
1469 "memory region table, aborting.\n");
1470 goto err_xrcd_table_free;
1471 }
1472
1473 err = mlx4_init_eq_table(dev);
1474 if (err) {
1475 mlx4_err(dev, "Failed to initialize "
1476 "event queue table, aborting.\n");
1477 goto err_mr_table_free;
1478 }
1479
1480 err = mlx4_cmd_use_events(dev);
1481 if (err) {
1482 mlx4_err(dev, "Failed to switch to event-driven "
1483 "firmware commands, aborting.\n");
1484 goto err_eq_table_free;
1485 }
1486
1487 err = mlx4_NOP(dev);
1488 if (err) {
1489 if (dev->flags & MLX4_FLAG_MSI_X) {
1490 mlx4_warn(dev, "NOP command failed to generate MSI-X "
1491 "interrupt IRQ %d).\n",
1492 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1493 mlx4_warn(dev, "Trying again without MSI-X.\n");
1494 } else {
1495 mlx4_err(dev, "NOP command failed to generate interrupt "
1496 "(IRQ %d), aborting.\n",
1497 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1498 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
1499 }
1500
1501 goto err_cmd_poll;
1502 }
1503
1504 mlx4_dbg(dev, "NOP command IRQ test passed\n");
1505
1506 err = mlx4_init_cq_table(dev);
1507 if (err) {
1508 mlx4_err(dev, "Failed to initialize "
1509 "completion queue table, aborting.\n");
1510 goto err_cmd_poll;
1511 }
1512
1513 err = mlx4_init_srq_table(dev);
1514 if (err) {
1515 mlx4_err(dev, "Failed to initialize "
1516 "shared receive queue table, aborting.\n");
1517 goto err_cq_table_free;
1518 }
1519
1520 err = mlx4_init_qp_table(dev);
1521 if (err) {
1522 mlx4_err(dev, "Failed to initialize "
1523 "queue pair table, aborting.\n");
1524 goto err_srq_table_free;
1525 }
1526
1527 if (!mlx4_is_slave(dev)) {
1528 err = mlx4_init_mcg_table(dev);
1529 if (err) {
1530 mlx4_err(dev, "Failed to initialize "
1531 "multicast group table, aborting.\n");
1532 goto err_qp_table_free;
1533 }
1534 }
1535
1536 err = mlx4_init_counters_table(dev);
1537 if (err && err != -ENOENT) {
1538 mlx4_err(dev, "Failed to initialize counters table, aborting.\n");
1539 goto err_mcg_table_free;
1540 }
1541
1542 if (!mlx4_is_slave(dev)) {
1543 for (port = 1; port <= dev->caps.num_ports; port++) {
1544 ib_port_default_caps = 0;
1545 err = mlx4_get_port_ib_caps(dev, port,
1546 &ib_port_default_caps);
1547 if (err)
1548 mlx4_warn(dev, "failed to get port %d default "
1549 "ib capabilities (%d). Continuing "
1550 "with caps = 0\n", port, err);
1551 dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
1552
1553 /* initialize per-slave default ib port capabilities */
1554 if (mlx4_is_master(dev)) {
1555 int i;
1556 for (i = 0; i < dev->num_slaves; i++) {
1557 if (i == mlx4_master_func_num(dev))
1558 continue;
1559 priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
1560 ib_port_default_caps;
1561 }
1562 }
1563
1564 if (mlx4_is_mfunc(dev))
1565 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
1566 else
1567 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
1568
1569 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
1570 dev->caps.pkey_table_len[port] : -1);
1571 if (err) {
1572 mlx4_err(dev, "Failed to set port %d, aborting\n",
1573 port);
1574 goto err_counters_table_free;
1575 }
1576 }
1577 }
1578
1579 return 0;
1580
1581 err_counters_table_free:
1582 mlx4_cleanup_counters_table(dev);
1583
1584 err_mcg_table_free:
1585 mlx4_cleanup_mcg_table(dev);
1586
1587 err_qp_table_free:
1588 mlx4_cleanup_qp_table(dev);
1589
1590 err_srq_table_free:
1591 mlx4_cleanup_srq_table(dev);
1592
1593 err_cq_table_free:
1594 mlx4_cleanup_cq_table(dev);
1595
1596 err_cmd_poll:
1597 mlx4_cmd_use_polling(dev);
1598
1599 err_eq_table_free:
1600 mlx4_cleanup_eq_table(dev);
1601
1602 err_mr_table_free:
1603 mlx4_cleanup_mr_table(dev);
1604
1605 err_xrcd_table_free:
1606 mlx4_cleanup_xrcd_table(dev);
1607
1608 err_pd_table_free:
1609 mlx4_cleanup_pd_table(dev);
1610
1611 err_kar_unmap:
1612 iounmap(priv->kar);
1613
1614 err_uar_free:
1615 mlx4_uar_free(dev, &priv->driver_uar);
1616
1617 err_uar_table_free:
1618 mlx4_cleanup_uar_table(dev);
1619 return err;
1620 }
1621
1622 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
1623 {
1624 struct mlx4_priv *priv = mlx4_priv(dev);
1625 struct msix_entry *entries;
1626 int nreq = min_t(int, dev->caps.num_ports *
1627 min_t(int, netif_get_num_default_rss_queues() + 1,
1628 MAX_MSIX_P_PORT) + MSIX_LEGACY_SZ, MAX_MSIX);
1629 int err;
1630 int i;
1631
1632 if (msi_x) {
1633 /* In multifunction mode each function gets 2 msi-X vectors
1634 * one for data path completions anf the other for asynch events
1635 * or command completions */
1636 if (mlx4_is_mfunc(dev)) {
1637 nreq = 2;
1638 } else {
1639 nreq = min_t(int, dev->caps.num_eqs -
1640 dev->caps.reserved_eqs, nreq);
1641 }
1642
1643 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
1644 if (!entries)
1645 goto no_msi;
1646
1647 for (i = 0; i < nreq; ++i)
1648 entries[i].entry = i;
1649
1650 retry:
1651 err = pci_enable_msix(dev->pdev, entries, nreq);
1652 if (err) {
1653 /* Try again if at least 2 vectors are available */
1654 if (err > 1) {
1655 mlx4_info(dev, "Requested %d vectors, "
1656 "but only %d MSI-X vectors available, "
1657 "trying again\n", nreq, err);
1658 nreq = err;
1659 goto retry;
1660 }
1661 kfree(entries);
1662 goto no_msi;
1663 }
1664
1665 if (nreq <
1666 MSIX_LEGACY_SZ + dev->caps.num_ports * MIN_MSIX_P_PORT) {
1667 /*Working in legacy mode , all EQ's shared*/
1668 dev->caps.comp_pool = 0;
1669 dev->caps.num_comp_vectors = nreq - 1;
1670 } else {
1671 dev->caps.comp_pool = nreq - MSIX_LEGACY_SZ;
1672 dev->caps.num_comp_vectors = MSIX_LEGACY_SZ - 1;
1673 }
1674 for (i = 0; i < nreq; ++i)
1675 priv->eq_table.eq[i].irq = entries[i].vector;
1676
1677 dev->flags |= MLX4_FLAG_MSI_X;
1678
1679 kfree(entries);
1680 return;
1681 }
1682
1683 no_msi:
1684 dev->caps.num_comp_vectors = 1;
1685 dev->caps.comp_pool = 0;
1686
1687 for (i = 0; i < 2; ++i)
1688 priv->eq_table.eq[i].irq = dev->pdev->irq;
1689 }
1690
1691 static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
1692 {
1693 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
1694 int err = 0;
1695
1696 info->dev = dev;
1697 info->port = port;
1698 if (!mlx4_is_slave(dev)) {
1699 INIT_RADIX_TREE(&info->mac_tree, GFP_KERNEL);
1700 mlx4_init_mac_table(dev, &info->mac_table);
1701 mlx4_init_vlan_table(dev, &info->vlan_table);
1702 info->base_qpn =
1703 dev->caps.reserved_qps_base[MLX4_QP_REGION_ETH_ADDR] +
1704 (port - 1) * (1 << log_num_mac);
1705 }
1706
1707 sprintf(info->dev_name, "mlx4_port%d", port);
1708 info->port_attr.attr.name = info->dev_name;
1709 if (mlx4_is_mfunc(dev))
1710 info->port_attr.attr.mode = S_IRUGO;
1711 else {
1712 info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
1713 info->port_attr.store = set_port_type;
1714 }
1715 info->port_attr.show = show_port_type;
1716 sysfs_attr_init(&info->port_attr.attr);
1717
1718 err = device_create_file(&dev->pdev->dev, &info->port_attr);
1719 if (err) {
1720 mlx4_err(dev, "Failed to create file for port %d\n", port);
1721 info->port = -1;
1722 }
1723
1724 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
1725 info->port_mtu_attr.attr.name = info->dev_mtu_name;
1726 if (mlx4_is_mfunc(dev))
1727 info->port_mtu_attr.attr.mode = S_IRUGO;
1728 else {
1729 info->port_mtu_attr.attr.mode = S_IRUGO | S_IWUSR;
1730 info->port_mtu_attr.store = set_port_ib_mtu;
1731 }
1732 info->port_mtu_attr.show = show_port_ib_mtu;
1733 sysfs_attr_init(&info->port_mtu_attr.attr);
1734
1735 err = device_create_file(&dev->pdev->dev, &info->port_mtu_attr);
1736 if (err) {
1737 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
1738 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
1739 info->port = -1;
1740 }
1741
1742 return err;
1743 }
1744
1745 static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
1746 {
1747 if (info->port < 0)
1748 return;
1749
1750 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
1751 device_remove_file(&info->dev->pdev->dev, &info->port_mtu_attr);
1752 }
1753
1754 static int mlx4_init_steering(struct mlx4_dev *dev)
1755 {
1756 struct mlx4_priv *priv = mlx4_priv(dev);
1757 int num_entries = dev->caps.num_ports;
1758 int i, j;
1759
1760 priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL);
1761 if (!priv->steer)
1762 return -ENOMEM;
1763
1764 for (i = 0; i < num_entries; i++)
1765 for (j = 0; j < MLX4_NUM_STEERS; j++) {
1766 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
1767 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
1768 }
1769 return 0;
1770 }
1771
1772 static void mlx4_clear_steering(struct mlx4_dev *dev)
1773 {
1774 struct mlx4_priv *priv = mlx4_priv(dev);
1775 struct mlx4_steer_index *entry, *tmp_entry;
1776 struct mlx4_promisc_qp *pqp, *tmp_pqp;
1777 int num_entries = dev->caps.num_ports;
1778 int i, j;
1779
1780 for (i = 0; i < num_entries; i++) {
1781 for (j = 0; j < MLX4_NUM_STEERS; j++) {
1782 list_for_each_entry_safe(pqp, tmp_pqp,
1783 &priv->steer[i].promisc_qps[j],
1784 list) {
1785 list_del(&pqp->list);
1786 kfree(pqp);
1787 }
1788 list_for_each_entry_safe(entry, tmp_entry,
1789 &priv->steer[i].steer_entries[j],
1790 list) {
1791 list_del(&entry->list);
1792 list_for_each_entry_safe(pqp, tmp_pqp,
1793 &entry->duplicates,
1794 list) {
1795 list_del(&pqp->list);
1796 kfree(pqp);
1797 }
1798 kfree(entry);
1799 }
1800 }
1801 }
1802 kfree(priv->steer);
1803 }
1804
1805 static int extended_func_num(struct pci_dev *pdev)
1806 {
1807 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
1808 }
1809
1810 #define MLX4_OWNER_BASE 0x8069c
1811 #define MLX4_OWNER_SIZE 4
1812
1813 static int mlx4_get_ownership(struct mlx4_dev *dev)
1814 {
1815 void __iomem *owner;
1816 u32 ret;
1817
1818 if (pci_channel_offline(dev->pdev))
1819 return -EIO;
1820
1821 owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
1822 MLX4_OWNER_SIZE);
1823 if (!owner) {
1824 mlx4_err(dev, "Failed to obtain ownership bit\n");
1825 return -ENOMEM;
1826 }
1827
1828 ret = readl(owner);
1829 iounmap(owner);
1830 return (int) !!ret;
1831 }
1832
1833 static void mlx4_free_ownership(struct mlx4_dev *dev)
1834 {
1835 void __iomem *owner;
1836
1837 if (pci_channel_offline(dev->pdev))
1838 return;
1839
1840 owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
1841 MLX4_OWNER_SIZE);
1842 if (!owner) {
1843 mlx4_err(dev, "Failed to obtain ownership bit\n");
1844 return;
1845 }
1846 writel(0, owner);
1847 msleep(1000);
1848 iounmap(owner);
1849 }
1850
1851 static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
1852 {
1853 struct mlx4_priv *priv;
1854 struct mlx4_dev *dev;
1855 int err;
1856 int port;
1857
1858 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
1859
1860 err = pci_enable_device(pdev);
1861 if (err) {
1862 dev_err(&pdev->dev, "Cannot enable PCI device, "
1863 "aborting.\n");
1864 return err;
1865 }
1866 if (num_vfs > MLX4_MAX_NUM_VF) {
1867 printk(KERN_ERR "There are more VF's (%d) than allowed(%d)\n",
1868 num_vfs, MLX4_MAX_NUM_VF);
1869 return -EINVAL;
1870 }
1871 /*
1872 * Check for BARs.
1873 */
1874 if (((id == NULL) || !(id->driver_data & MLX4_VF)) &&
1875 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1876 dev_err(&pdev->dev, "Missing DCS, aborting."
1877 "(id == 0X%p, id->driver_data: 0x%lx,"
1878 " pci_resource_flags(pdev, 0):0x%lx)\n", id,
1879 id ? id->driver_data : 0, pci_resource_flags(pdev, 0));
1880 err = -ENODEV;
1881 goto err_disable_pdev;
1882 }
1883 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
1884 dev_err(&pdev->dev, "Missing UAR, aborting.\n");
1885 err = -ENODEV;
1886 goto err_disable_pdev;
1887 }
1888
1889 err = pci_request_regions(pdev, DRV_NAME);
1890 if (err) {
1891 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
1892 goto err_disable_pdev;
1893 }
1894
1895 pci_set_master(pdev);
1896
1897 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1898 if (err) {
1899 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
1900 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1901 if (err) {
1902 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
1903 goto err_release_regions;
1904 }
1905 }
1906 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
1907 if (err) {
1908 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
1909 "consistent PCI DMA mask.\n");
1910 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1911 if (err) {
1912 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
1913 "aborting.\n");
1914 goto err_release_regions;
1915 }
1916 }
1917
1918 /* Allow large DMA segments, up to the firmware limit of 1 GB */
1919 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
1920
1921 priv = kzalloc(sizeof *priv, GFP_KERNEL);
1922 if (!priv) {
1923 dev_err(&pdev->dev, "Device struct alloc failed, "
1924 "aborting.\n");
1925 err = -ENOMEM;
1926 goto err_release_regions;
1927 }
1928
1929 dev = &priv->dev;
1930 dev->pdev = pdev;
1931 INIT_LIST_HEAD(&priv->ctx_list);
1932 spin_lock_init(&priv->ctx_lock);
1933
1934 mutex_init(&priv->port_mutex);
1935
1936 INIT_LIST_HEAD(&priv->pgdir_list);
1937 mutex_init(&priv->pgdir_mutex);
1938
1939 INIT_LIST_HEAD(&priv->bf_list);
1940 mutex_init(&priv->bf_mutex);
1941
1942 dev->rev_id = pdev->revision;
1943 /* Detect if this device is a virtual function */
1944 if (id && id->driver_data & MLX4_VF) {
1945 /* When acting as pf, we normally skip vfs unless explicitly
1946 * requested to probe them. */
1947 if (num_vfs && extended_func_num(pdev) > probe_vf) {
1948 mlx4_warn(dev, "Skipping virtual function:%d\n",
1949 extended_func_num(pdev));
1950 err = -ENODEV;
1951 goto err_free_dev;
1952 }
1953 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
1954 dev->flags |= MLX4_FLAG_SLAVE;
1955 } else {
1956 /* We reset the device and enable SRIOV only for physical
1957 * devices. Try to claim ownership on the device;
1958 * if already taken, skip -- do not allow multiple PFs */
1959 err = mlx4_get_ownership(dev);
1960 if (err) {
1961 if (err < 0)
1962 goto err_free_dev;
1963 else {
1964 mlx4_warn(dev, "Multiple PFs not yet supported."
1965 " Skipping PF.\n");
1966 err = -EINVAL;
1967 goto err_free_dev;
1968 }
1969 }
1970
1971 if (num_vfs) {
1972 mlx4_warn(dev, "Enabling sriov with:%d vfs\n", num_vfs);
1973 err = pci_enable_sriov(pdev, num_vfs);
1974 if (err) {
1975 mlx4_err(dev, "Failed to enable sriov,"
1976 "continuing without sriov enabled"
1977 " (err = %d).\n", err);
1978 err = 0;
1979 } else {
1980 mlx4_warn(dev, "Running in master mode\n");
1981 dev->flags |= MLX4_FLAG_SRIOV |
1982 MLX4_FLAG_MASTER;
1983 dev->num_vfs = num_vfs;
1984 }
1985 }
1986
1987 /*
1988 * Now reset the HCA before we touch the PCI capabilities or
1989 * attempt a firmware command, since a boot ROM may have left
1990 * the HCA in an undefined state.
1991 */
1992 err = mlx4_reset(dev);
1993 if (err) {
1994 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
1995 goto err_rel_own;
1996 }
1997 }
1998
1999 slave_start:
2000 err = mlx4_cmd_init(dev);
2001 if (err) {
2002 mlx4_err(dev, "Failed to init command interface, aborting.\n");
2003 goto err_sriov;
2004 }
2005
2006 /* In slave functions, the communication channel must be initialized
2007 * before posting commands. Also, init num_slaves before calling
2008 * mlx4_init_hca */
2009 if (mlx4_is_mfunc(dev)) {
2010 if (mlx4_is_master(dev))
2011 dev->num_slaves = MLX4_MAX_NUM_SLAVES;
2012 else {
2013 dev->num_slaves = 0;
2014 if (mlx4_multi_func_init(dev)) {
2015 mlx4_err(dev, "Failed to init slave mfunc"
2016 " interface, aborting.\n");
2017 goto err_cmd;
2018 }
2019 }
2020 }
2021
2022 err = mlx4_init_hca(dev);
2023 if (err) {
2024 if (err == -EACCES) {
2025 /* Not primary Physical function
2026 * Running in slave mode */
2027 mlx4_cmd_cleanup(dev);
2028 dev->flags |= MLX4_FLAG_SLAVE;
2029 dev->flags &= ~MLX4_FLAG_MASTER;
2030 goto slave_start;
2031 } else
2032 goto err_mfunc;
2033 }
2034
2035 /* In master functions, the communication channel must be initialized
2036 * after obtaining its address from fw */
2037 if (mlx4_is_master(dev)) {
2038 if (mlx4_multi_func_init(dev)) {
2039 mlx4_err(dev, "Failed to init master mfunc"
2040 "interface, aborting.\n");
2041 goto err_close;
2042 }
2043 }
2044
2045 err = mlx4_alloc_eq_table(dev);
2046 if (err)
2047 goto err_master_mfunc;
2048
2049 priv->msix_ctl.pool_bm = 0;
2050 mutex_init(&priv->msix_ctl.pool_lock);
2051
2052 mlx4_enable_msi_x(dev);
2053 if ((mlx4_is_mfunc(dev)) &&
2054 !(dev->flags & MLX4_FLAG_MSI_X)) {
2055 mlx4_err(dev, "INTx is not supported in multi-function mode."
2056 " aborting.\n");
2057 goto err_free_eq;
2058 }
2059
2060 if (!mlx4_is_slave(dev)) {
2061 err = mlx4_init_steering(dev);
2062 if (err)
2063 goto err_free_eq;
2064 }
2065
2066 err = mlx4_setup_hca(dev);
2067 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
2068 !mlx4_is_mfunc(dev)) {
2069 dev->flags &= ~MLX4_FLAG_MSI_X;
2070 dev->caps.num_comp_vectors = 1;
2071 dev->caps.comp_pool = 0;
2072 pci_disable_msix(pdev);
2073 err = mlx4_setup_hca(dev);
2074 }
2075
2076 if (err)
2077 goto err_steer;
2078
2079 for (port = 1; port <= dev->caps.num_ports; port++) {
2080 err = mlx4_init_port_info(dev, port);
2081 if (err)
2082 goto err_port;
2083 }
2084
2085 err = mlx4_register_device(dev);
2086 if (err)
2087 goto err_port;
2088
2089 mlx4_sense_init(dev);
2090 mlx4_start_sense(dev);
2091
2092 pci_set_drvdata(pdev, dev);
2093
2094 return 0;
2095
2096 err_port:
2097 for (--port; port >= 1; --port)
2098 mlx4_cleanup_port_info(&priv->port[port]);
2099
2100 mlx4_cleanup_counters_table(dev);
2101 mlx4_cleanup_mcg_table(dev);
2102 mlx4_cleanup_qp_table(dev);
2103 mlx4_cleanup_srq_table(dev);
2104 mlx4_cleanup_cq_table(dev);
2105 mlx4_cmd_use_polling(dev);
2106 mlx4_cleanup_eq_table(dev);
2107 mlx4_cleanup_mr_table(dev);
2108 mlx4_cleanup_xrcd_table(dev);
2109 mlx4_cleanup_pd_table(dev);
2110 mlx4_cleanup_uar_table(dev);
2111
2112 err_steer:
2113 if (!mlx4_is_slave(dev))
2114 mlx4_clear_steering(dev);
2115
2116 err_free_eq:
2117 mlx4_free_eq_table(dev);
2118
2119 err_master_mfunc:
2120 if (mlx4_is_master(dev))
2121 mlx4_multi_func_cleanup(dev);
2122
2123 err_close:
2124 if (dev->flags & MLX4_FLAG_MSI_X)
2125 pci_disable_msix(pdev);
2126
2127 mlx4_close_hca(dev);
2128
2129 err_mfunc:
2130 if (mlx4_is_slave(dev))
2131 mlx4_multi_func_cleanup(dev);
2132
2133 err_cmd:
2134 mlx4_cmd_cleanup(dev);
2135
2136 err_sriov:
2137 if (dev->flags & MLX4_FLAG_SRIOV)
2138 pci_disable_sriov(pdev);
2139
2140 err_rel_own:
2141 if (!mlx4_is_slave(dev))
2142 mlx4_free_ownership(dev);
2143
2144 err_free_dev:
2145 kfree(priv);
2146
2147 err_release_regions:
2148 pci_release_regions(pdev);
2149
2150 err_disable_pdev:
2151 pci_disable_device(pdev);
2152 pci_set_drvdata(pdev, NULL);
2153 return err;
2154 }
2155
2156 static int __devinit mlx4_init_one(struct pci_dev *pdev,
2157 const struct pci_device_id *id)
2158 {
2159 printk_once(KERN_INFO "%s", mlx4_version);
2160
2161 return __mlx4_init_one(pdev, id);
2162 }
2163
2164 static void mlx4_remove_one(struct pci_dev *pdev)
2165 {
2166 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2167 struct mlx4_priv *priv = mlx4_priv(dev);
2168 int p;
2169
2170 if (dev) {
2171 /* in SRIOV it is not allowed to unload the pf's
2172 * driver while there are alive vf's */
2173 if (mlx4_is_master(dev)) {
2174 if (mlx4_how_many_lives_vf(dev))
2175 printk(KERN_ERR "Removing PF when there are assigned VF's !!!\n");
2176 }
2177 mlx4_stop_sense(dev);
2178 mlx4_unregister_device(dev);
2179
2180 for (p = 1; p <= dev->caps.num_ports; p++) {
2181 mlx4_cleanup_port_info(&priv->port[p]);
2182 mlx4_CLOSE_PORT(dev, p);
2183 }
2184
2185 if (mlx4_is_master(dev))
2186 mlx4_free_resource_tracker(dev,
2187 RES_TR_FREE_SLAVES_ONLY);
2188
2189 mlx4_cleanup_counters_table(dev);
2190 mlx4_cleanup_mcg_table(dev);
2191 mlx4_cleanup_qp_table(dev);
2192 mlx4_cleanup_srq_table(dev);
2193 mlx4_cleanup_cq_table(dev);
2194 mlx4_cmd_use_polling(dev);
2195 mlx4_cleanup_eq_table(dev);
2196 mlx4_cleanup_mr_table(dev);
2197 mlx4_cleanup_xrcd_table(dev);
2198 mlx4_cleanup_pd_table(dev);
2199
2200 if (mlx4_is_master(dev))
2201 mlx4_free_resource_tracker(dev,
2202 RES_TR_FREE_STRUCTS_ONLY);
2203
2204 iounmap(priv->kar);
2205 mlx4_uar_free(dev, &priv->driver_uar);
2206 mlx4_cleanup_uar_table(dev);
2207 if (!mlx4_is_slave(dev))
2208 mlx4_clear_steering(dev);
2209 mlx4_free_eq_table(dev);
2210 if (mlx4_is_master(dev))
2211 mlx4_multi_func_cleanup(dev);
2212 mlx4_close_hca(dev);
2213 if (mlx4_is_slave(dev))
2214 mlx4_multi_func_cleanup(dev);
2215 mlx4_cmd_cleanup(dev);
2216
2217 if (dev->flags & MLX4_FLAG_MSI_X)
2218 pci_disable_msix(pdev);
2219 if (dev->flags & MLX4_FLAG_SRIOV) {
2220 mlx4_warn(dev, "Disabling sriov\n");
2221 pci_disable_sriov(pdev);
2222 }
2223
2224 if (!mlx4_is_slave(dev))
2225 mlx4_free_ownership(dev);
2226 kfree(priv);
2227 pci_release_regions(pdev);
2228 pci_disable_device(pdev);
2229 pci_set_drvdata(pdev, NULL);
2230 }
2231 }
2232
2233 int mlx4_restart_one(struct pci_dev *pdev)
2234 {
2235 mlx4_remove_one(pdev);
2236 return __mlx4_init_one(pdev, NULL);
2237 }
2238
2239 static DEFINE_PCI_DEVICE_TABLE(mlx4_pci_table) = {
2240 /* MT25408 "Hermon" SDR */
2241 { PCI_VDEVICE(MELLANOX, 0x6340), 0 },
2242 /* MT25408 "Hermon" DDR */
2243 { PCI_VDEVICE(MELLANOX, 0x634a), 0 },
2244 /* MT25408 "Hermon" QDR */
2245 { PCI_VDEVICE(MELLANOX, 0x6354), 0 },
2246 /* MT25408 "Hermon" DDR PCIe gen2 */
2247 { PCI_VDEVICE(MELLANOX, 0x6732), 0 },
2248 /* MT25408 "Hermon" QDR PCIe gen2 */
2249 { PCI_VDEVICE(MELLANOX, 0x673c), 0 },
2250 /* MT25408 "Hermon" EN 10GigE */
2251 { PCI_VDEVICE(MELLANOX, 0x6368), 0 },
2252 /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
2253 { PCI_VDEVICE(MELLANOX, 0x6750), 0 },
2254 /* MT25458 ConnectX EN 10GBASE-T 10GigE */
2255 { PCI_VDEVICE(MELLANOX, 0x6372), 0 },
2256 /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
2257 { PCI_VDEVICE(MELLANOX, 0x675a), 0 },
2258 /* MT26468 ConnectX EN 10GigE PCIe gen2*/
2259 { PCI_VDEVICE(MELLANOX, 0x6764), 0 },
2260 /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */
2261 { PCI_VDEVICE(MELLANOX, 0x6746), 0 },
2262 /* MT26478 ConnectX2 40GigE PCIe gen2 */
2263 { PCI_VDEVICE(MELLANOX, 0x676e), 0 },
2264 /* MT25400 Family [ConnectX-2 Virtual Function] */
2265 { PCI_VDEVICE(MELLANOX, 0x1002), MLX4_VF },
2266 /* MT27500 Family [ConnectX-3] */
2267 { PCI_VDEVICE(MELLANOX, 0x1003), 0 },
2268 /* MT27500 Family [ConnectX-3 Virtual Function] */
2269 { PCI_VDEVICE(MELLANOX, 0x1004), MLX4_VF },
2270 { PCI_VDEVICE(MELLANOX, 0x1005), 0 }, /* MT27510 Family */
2271 { PCI_VDEVICE(MELLANOX, 0x1006), 0 }, /* MT27511 Family */
2272 { PCI_VDEVICE(MELLANOX, 0x1007), 0 }, /* MT27520 Family */
2273 { PCI_VDEVICE(MELLANOX, 0x1008), 0 }, /* MT27521 Family */
2274 { PCI_VDEVICE(MELLANOX, 0x1009), 0 }, /* MT27530 Family */
2275 { PCI_VDEVICE(MELLANOX, 0x100a), 0 }, /* MT27531 Family */
2276 { PCI_VDEVICE(MELLANOX, 0x100b), 0 }, /* MT27540 Family */
2277 { PCI_VDEVICE(MELLANOX, 0x100c), 0 }, /* MT27541 Family */
2278 { PCI_VDEVICE(MELLANOX, 0x100d), 0 }, /* MT27550 Family */
2279 { PCI_VDEVICE(MELLANOX, 0x100e), 0 }, /* MT27551 Family */
2280 { PCI_VDEVICE(MELLANOX, 0x100f), 0 }, /* MT27560 Family */
2281 { PCI_VDEVICE(MELLANOX, 0x1010), 0 }, /* MT27561 Family */
2282 { 0, }
2283 };
2284
2285 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
2286
2287 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
2288 pci_channel_state_t state)
2289 {
2290 mlx4_remove_one(pdev);
2291
2292 return state == pci_channel_io_perm_failure ?
2293 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
2294 }
2295
2296 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
2297 {
2298 int ret = __mlx4_init_one(pdev, NULL);
2299
2300 return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
2301 }
2302
2303 static struct pci_error_handlers mlx4_err_handler = {
2304 .error_detected = mlx4_pci_err_detected,
2305 .slot_reset = mlx4_pci_slot_reset,
2306 };
2307
2308 static struct pci_driver mlx4_driver = {
2309 .name = DRV_NAME,
2310 .id_table = mlx4_pci_table,
2311 .probe = mlx4_init_one,
2312 .remove = __devexit_p(mlx4_remove_one),
2313 .err_handler = &mlx4_err_handler,
2314 };
2315
2316 static int __init mlx4_verify_params(void)
2317 {
2318 if ((log_num_mac < 0) || (log_num_mac > 7)) {
2319 pr_warning("mlx4_core: bad num_mac: %d\n", log_num_mac);
2320 return -1;
2321 }
2322
2323 if (log_num_vlan != 0)
2324 pr_warning("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
2325 MLX4_LOG_NUM_VLANS);
2326
2327 if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
2328 pr_warning("mlx4_core: bad log_mtts_per_seg: %d\n", log_mtts_per_seg);
2329 return -1;
2330 }
2331
2332 /* Check if module param for ports type has legal combination */
2333 if (port_type_array[0] == false && port_type_array[1] == true) {
2334 printk(KERN_WARNING "Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
2335 port_type_array[0] = true;
2336 }
2337
2338 return 0;
2339 }
2340
2341 static int __init mlx4_init(void)
2342 {
2343 int ret;
2344
2345 if (mlx4_verify_params())
2346 return -EINVAL;
2347
2348 mlx4_catas_init();
2349
2350 mlx4_wq = create_singlethread_workqueue("mlx4");
2351 if (!mlx4_wq)
2352 return -ENOMEM;
2353
2354 ret = pci_register_driver(&mlx4_driver);
2355 return ret < 0 ? ret : 0;
2356 }
2357
2358 static void __exit mlx4_cleanup(void)
2359 {
2360 pci_unregister_driver(&mlx4_driver);
2361 destroy_workqueue(mlx4_wq);
2362 }
2363
2364 module_init(mlx4_init);
2365 module_exit(mlx4_cleanup);
Linux ARM platform port for MOXA ART SoC