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ARM: common: edma: Fix xbar mapping
[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/kmod.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 uint8_t num_vfs[3] = {0, 0, 0};
81 static int num_vfs_argc = 3;
82 module_param_array(num_vfs, byte , &num_vfs_argc, 0444);
83 MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0\n"
84 "num_vfs=port1,port2,port1+2");
85
86 static uint8_t probe_vf[3] = {0, 0, 0};
87 static int probe_vfs_argc = 3;
88 module_param_array(probe_vf, byte, &probe_vfs_argc, 0444);
89 MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)\n"
90 "probe_vf=port1,port2,port1+2");
91
92 int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
93 module_param_named(log_num_mgm_entry_size,
94 mlx4_log_num_mgm_entry_size, int, 0444);
95 MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num"
96 " of qp per mcg, for example:"
97 " 10 gives 248.range: 7 <="
98 " log_num_mgm_entry_size <= 12."
99 " To activate device managed"
100 " flow steering when available, set to -1");
101
102 static bool enable_64b_cqe_eqe = true;
103 module_param(enable_64b_cqe_eqe, bool, 0444);
104 MODULE_PARM_DESC(enable_64b_cqe_eqe,
105 "Enable 64 byte CQEs/EQEs when the FW supports this (default: True)");
106
107 #define HCA_GLOBAL_CAP_MASK 0
108
109 #define PF_CONTEXT_BEHAVIOUR_MASK MLX4_FUNC_CAP_64B_EQE_CQE
110
111 static char mlx4_version[] =
112 DRV_NAME ": Mellanox ConnectX core driver v"
113 DRV_VERSION " (" DRV_RELDATE ")\n";
114
115 static struct mlx4_profile default_profile = {
116 .num_qp = 1 << 18,
117 .num_srq = 1 << 16,
118 .rdmarc_per_qp = 1 << 4,
119 .num_cq = 1 << 16,
120 .num_mcg = 1 << 13,
121 .num_mpt = 1 << 19,
122 .num_mtt = 1 << 20, /* It is really num mtt segements */
123 };
124
125 static int log_num_mac = 7;
126 module_param_named(log_num_mac, log_num_mac, int, 0444);
127 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
128
129 static int log_num_vlan;
130 module_param_named(log_num_vlan, log_num_vlan, int, 0444);
131 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
132 /* Log2 max number of VLANs per ETH port (0-7) */
133 #define MLX4_LOG_NUM_VLANS 7
134
135 static bool use_prio;
136 module_param_named(use_prio, use_prio, bool, 0444);
137 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports "
138 "(0/1, default 0)");
139
140 int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
141 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
142 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-7)");
143
144 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE};
145 static int arr_argc = 2;
146 module_param_array(port_type_array, int, &arr_argc, 0444);
147 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default "
148 "1 for IB, 2 for Ethernet");
149
150 struct mlx4_port_config {
151 struct list_head list;
152 enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
153 struct pci_dev *pdev;
154 };
155
156 static atomic_t pf_loading = ATOMIC_INIT(0);
157
158 int mlx4_check_port_params(struct mlx4_dev *dev,
159 enum mlx4_port_type *port_type)
160 {
161 int i;
162
163 for (i = 0; i < dev->caps.num_ports - 1; i++) {
164 if (port_type[i] != port_type[i + 1]) {
165 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
166 mlx4_err(dev, "Only same port types supported "
167 "on this HCA, aborting.\n");
168 return -EINVAL;
169 }
170 }
171 }
172
173 for (i = 0; i < dev->caps.num_ports; i++) {
174 if (!(port_type[i] & dev->caps.supported_type[i+1])) {
175 mlx4_err(dev, "Requested port type for port %d is not "
176 "supported on this HCA\n", i + 1);
177 return -EINVAL;
178 }
179 }
180 return 0;
181 }
182
183 static void mlx4_set_port_mask(struct mlx4_dev *dev)
184 {
185 int i;
186
187 for (i = 1; i <= dev->caps.num_ports; ++i)
188 dev->caps.port_mask[i] = dev->caps.port_type[i];
189 }
190
191 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
192 {
193 int err;
194 int i;
195
196 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
197 if (err) {
198 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
199 return err;
200 }
201
202 if (dev_cap->min_page_sz > PAGE_SIZE) {
203 mlx4_err(dev, "HCA minimum page size of %d bigger than "
204 "kernel PAGE_SIZE of %ld, aborting.\n",
205 dev_cap->min_page_sz, PAGE_SIZE);
206 return -ENODEV;
207 }
208 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
209 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
210 "aborting.\n",
211 dev_cap->num_ports, MLX4_MAX_PORTS);
212 return -ENODEV;
213 }
214
215 if (dev_cap->uar_size > pci_resource_len(dev->pdev, 2)) {
216 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than "
217 "PCI resource 2 size of 0x%llx, aborting.\n",
218 dev_cap->uar_size,
219 (unsigned long long) pci_resource_len(dev->pdev, 2));
220 return -ENODEV;
221 }
222
223 dev->caps.num_ports = dev_cap->num_ports;
224 dev->phys_caps.num_phys_eqs = MLX4_MAX_EQ_NUM;
225 for (i = 1; i <= dev->caps.num_ports; ++i) {
226 dev->caps.vl_cap[i] = dev_cap->max_vl[i];
227 dev->caps.ib_mtu_cap[i] = dev_cap->ib_mtu[i];
228 dev->phys_caps.gid_phys_table_len[i] = dev_cap->max_gids[i];
229 dev->phys_caps.pkey_phys_table_len[i] = dev_cap->max_pkeys[i];
230 /* set gid and pkey table operating lengths by default
231 * to non-sriov values */
232 dev->caps.gid_table_len[i] = dev_cap->max_gids[i];
233 dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
234 dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
235 dev->caps.eth_mtu_cap[i] = dev_cap->eth_mtu[i];
236 dev->caps.def_mac[i] = dev_cap->def_mac[i];
237 dev->caps.supported_type[i] = dev_cap->supported_port_types[i];
238 dev->caps.suggested_type[i] = dev_cap->suggested_type[i];
239 dev->caps.default_sense[i] = dev_cap->default_sense[i];
240 dev->caps.trans_type[i] = dev_cap->trans_type[i];
241 dev->caps.vendor_oui[i] = dev_cap->vendor_oui[i];
242 dev->caps.wavelength[i] = dev_cap->wavelength[i];
243 dev->caps.trans_code[i] = dev_cap->trans_code[i];
244 }
245
246 dev->caps.uar_page_size = PAGE_SIZE;
247 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
248 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
249 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
250 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
251 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
252 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
253 dev->caps.max_wqes = dev_cap->max_qp_sz;
254 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
255 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
256 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
257 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
258 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
259 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
260 /*
261 * Subtract 1 from the limit because we need to allocate a
262 * spare CQE so the HCA HW can tell the difference between an
263 * empty CQ and a full CQ.
264 */
265 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
266 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
267 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
268 dev->caps.reserved_mtts = dev_cap->reserved_mtts;
269 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
270
271 /* The first 128 UARs are used for EQ doorbells */
272 dev->caps.reserved_uars = max_t(int, 128, dev_cap->reserved_uars);
273 dev->caps.reserved_pds = dev_cap->reserved_pds;
274 dev->caps.reserved_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
275 dev_cap->reserved_xrcds : 0;
276 dev->caps.max_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
277 dev_cap->max_xrcds : 0;
278 dev->caps.mtt_entry_sz = dev_cap->mtt_entry_sz;
279
280 dev->caps.max_msg_sz = dev_cap->max_msg_sz;
281 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
282 dev->caps.flags = dev_cap->flags;
283 dev->caps.flags2 = dev_cap->flags2;
284 dev->caps.bmme_flags = dev_cap->bmme_flags;
285 dev->caps.reserved_lkey = dev_cap->reserved_lkey;
286 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
287 dev->caps.max_gso_sz = dev_cap->max_gso_sz;
288 dev->caps.max_rss_tbl_sz = dev_cap->max_rss_tbl_sz;
289
290 /* Sense port always allowed on supported devices for ConnectX-1 and -2 */
291 if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT)
292 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
293 /* Don't do sense port on multifunction devices (for now at least) */
294 if (mlx4_is_mfunc(dev))
295 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
296
297 dev->caps.log_num_macs = log_num_mac;
298 dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
299 dev->caps.log_num_prios = use_prio ? 3 : 0;
300
301 for (i = 1; i <= dev->caps.num_ports; ++i) {
302 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
303 if (dev->caps.supported_type[i]) {
304 /* if only ETH is supported - assign ETH */
305 if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH)
306 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
307 /* if only IB is supported, assign IB */
308 else if (dev->caps.supported_type[i] ==
309 MLX4_PORT_TYPE_IB)
310 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
311 else {
312 /* if IB and ETH are supported, we set the port
313 * type according to user selection of port type;
314 * if user selected none, take the FW hint */
315 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE)
316 dev->caps.port_type[i] = dev->caps.suggested_type[i] ?
317 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB;
318 else
319 dev->caps.port_type[i] = port_type_array[i - 1];
320 }
321 }
322 /*
323 * Link sensing is allowed on the port if 3 conditions are true:
324 * 1. Both protocols are supported on the port.
325 * 2. Different types are supported on the port
326 * 3. FW declared that it supports link sensing
327 */
328 mlx4_priv(dev)->sense.sense_allowed[i] =
329 ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) &&
330 (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
331 (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT));
332
333 /*
334 * If "default_sense" bit is set, we move the port to "AUTO" mode
335 * and perform sense_port FW command to try and set the correct
336 * port type from beginning
337 */
338 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) {
339 enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE;
340 dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO;
341 mlx4_SENSE_PORT(dev, i, &sensed_port);
342 if (sensed_port != MLX4_PORT_TYPE_NONE)
343 dev->caps.port_type[i] = sensed_port;
344 } else {
345 dev->caps.possible_type[i] = dev->caps.port_type[i];
346 }
347
348 if (dev->caps.log_num_macs > dev_cap->log_max_macs[i]) {
349 dev->caps.log_num_macs = dev_cap->log_max_macs[i];
350 mlx4_warn(dev, "Requested number of MACs is too much "
351 "for port %d, reducing to %d.\n",
352 i, 1 << dev->caps.log_num_macs);
353 }
354 if (dev->caps.log_num_vlans > dev_cap->log_max_vlans[i]) {
355 dev->caps.log_num_vlans = dev_cap->log_max_vlans[i];
356 mlx4_warn(dev, "Requested number of VLANs is too much "
357 "for port %d, reducing to %d.\n",
358 i, 1 << dev->caps.log_num_vlans);
359 }
360 }
361
362 dev->caps.max_counters = 1 << ilog2(dev_cap->max_counters);
363
364 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
365 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
366 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
367 (1 << dev->caps.log_num_macs) *
368 (1 << dev->caps.log_num_vlans) *
369 (1 << dev->caps.log_num_prios) *
370 dev->caps.num_ports;
371 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
372
373 dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
374 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
375 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
376 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
377
378 dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
379
380 if (!enable_64b_cqe_eqe && !mlx4_is_slave(dev)) {
381 if (dev_cap->flags &
382 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) {
383 mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n");
384 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
385 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
386 }
387 }
388
389 if ((dev->caps.flags &
390 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) &&
391 mlx4_is_master(dev))
392 dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE;
393
394 return 0;
395 }
396
397 static int mlx4_get_pcie_dev_link_caps(struct mlx4_dev *dev,
398 enum pci_bus_speed *speed,
399 enum pcie_link_width *width)
400 {
401 u32 lnkcap1, lnkcap2;
402 int err1, err2;
403
404 #define PCIE_MLW_CAP_SHIFT 4 /* start of MLW mask in link capabilities */
405
406 *speed = PCI_SPEED_UNKNOWN;
407 *width = PCIE_LNK_WIDTH_UNKNOWN;
408
409 err1 = pcie_capability_read_dword(dev->pdev, PCI_EXP_LNKCAP, &lnkcap1);
410 err2 = pcie_capability_read_dword(dev->pdev, PCI_EXP_LNKCAP2, &lnkcap2);
411 if (!err2 && lnkcap2) { /* PCIe r3.0-compliant */
412 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
413 *speed = PCIE_SPEED_8_0GT;
414 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
415 *speed = PCIE_SPEED_5_0GT;
416 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
417 *speed = PCIE_SPEED_2_5GT;
418 }
419 if (!err1) {
420 *width = (lnkcap1 & PCI_EXP_LNKCAP_MLW) >> PCIE_MLW_CAP_SHIFT;
421 if (!lnkcap2) { /* pre-r3.0 */
422 if (lnkcap1 & PCI_EXP_LNKCAP_SLS_5_0GB)
423 *speed = PCIE_SPEED_5_0GT;
424 else if (lnkcap1 & PCI_EXP_LNKCAP_SLS_2_5GB)
425 *speed = PCIE_SPEED_2_5GT;
426 }
427 }
428
429 if (*speed == PCI_SPEED_UNKNOWN || *width == PCIE_LNK_WIDTH_UNKNOWN) {
430 return err1 ? err1 :
431 err2 ? err2 : -EINVAL;
432 }
433 return 0;
434 }
435
436 static void mlx4_check_pcie_caps(struct mlx4_dev *dev)
437 {
438 enum pcie_link_width width, width_cap;
439 enum pci_bus_speed speed, speed_cap;
440 int err;
441
442 #define PCIE_SPEED_STR(speed) \
443 (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" : \
444 speed == PCIE_SPEED_5_0GT ? "5.0GT/s" : \
445 speed == PCIE_SPEED_2_5GT ? "2.5GT/s" : \
446 "Unknown")
447
448 err = mlx4_get_pcie_dev_link_caps(dev, &speed_cap, &width_cap);
449 if (err) {
450 mlx4_warn(dev,
451 "Unable to determine PCIe device BW capabilities\n");
452 return;
453 }
454
455 err = pcie_get_minimum_link(dev->pdev, &speed, &width);
456 if (err || speed == PCI_SPEED_UNKNOWN ||
457 width == PCIE_LNK_WIDTH_UNKNOWN) {
458 mlx4_warn(dev,
459 "Unable to determine PCI device chain minimum BW\n");
460 return;
461 }
462
463 if (width != width_cap || speed != speed_cap)
464 mlx4_warn(dev,
465 "PCIe BW is different than device's capability\n");
466
467 mlx4_info(dev, "PCIe link speed is %s, device supports %s\n",
468 PCIE_SPEED_STR(speed), PCIE_SPEED_STR(speed_cap));
469 mlx4_info(dev, "PCIe link width is x%d, device supports x%d\n",
470 width, width_cap);
471 return;
472 }
473
474 /*The function checks if there are live vf, return the num of them*/
475 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
476 {
477 struct mlx4_priv *priv = mlx4_priv(dev);
478 struct mlx4_slave_state *s_state;
479 int i;
480 int ret = 0;
481
482 for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
483 s_state = &priv->mfunc.master.slave_state[i];
484 if (s_state->active && s_state->last_cmd !=
485 MLX4_COMM_CMD_RESET) {
486 mlx4_warn(dev, "%s: slave: %d is still active\n",
487 __func__, i);
488 ret++;
489 }
490 }
491 return ret;
492 }
493
494 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
495 {
496 u32 qk = MLX4_RESERVED_QKEY_BASE;
497
498 if (qpn >= dev->phys_caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
499 qpn < dev->phys_caps.base_proxy_sqpn)
500 return -EINVAL;
501
502 if (qpn >= dev->phys_caps.base_tunnel_sqpn)
503 /* tunnel qp */
504 qk += qpn - dev->phys_caps.base_tunnel_sqpn;
505 else
506 qk += qpn - dev->phys_caps.base_proxy_sqpn;
507 *qkey = qk;
508 return 0;
509 }
510 EXPORT_SYMBOL(mlx4_get_parav_qkey);
511
512 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val)
513 {
514 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
515
516 if (!mlx4_is_master(dev))
517 return;
518
519 priv->virt2phys_pkey[slave][port - 1][i] = val;
520 }
521 EXPORT_SYMBOL(mlx4_sync_pkey_table);
522
523 void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid)
524 {
525 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
526
527 if (!mlx4_is_master(dev))
528 return;
529
530 priv->slave_node_guids[slave] = guid;
531 }
532 EXPORT_SYMBOL(mlx4_put_slave_node_guid);
533
534 __be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave)
535 {
536 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
537
538 if (!mlx4_is_master(dev))
539 return 0;
540
541 return priv->slave_node_guids[slave];
542 }
543 EXPORT_SYMBOL(mlx4_get_slave_node_guid);
544
545 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
546 {
547 struct mlx4_priv *priv = mlx4_priv(dev);
548 struct mlx4_slave_state *s_slave;
549
550 if (!mlx4_is_master(dev))
551 return 0;
552
553 s_slave = &priv->mfunc.master.slave_state[slave];
554 return !!s_slave->active;
555 }
556 EXPORT_SYMBOL(mlx4_is_slave_active);
557
558 static void slave_adjust_steering_mode(struct mlx4_dev *dev,
559 struct mlx4_dev_cap *dev_cap,
560 struct mlx4_init_hca_param *hca_param)
561 {
562 dev->caps.steering_mode = hca_param->steering_mode;
563 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
564 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
565 dev->caps.fs_log_max_ucast_qp_range_size =
566 dev_cap->fs_log_max_ucast_qp_range_size;
567 } else
568 dev->caps.num_qp_per_mgm =
569 4 * ((1 << hca_param->log_mc_entry_sz)/16 - 2);
570
571 mlx4_dbg(dev, "Steering mode is: %s\n",
572 mlx4_steering_mode_str(dev->caps.steering_mode));
573 }
574
575 static int mlx4_slave_cap(struct mlx4_dev *dev)
576 {
577 int err;
578 u32 page_size;
579 struct mlx4_dev_cap dev_cap;
580 struct mlx4_func_cap func_cap;
581 struct mlx4_init_hca_param hca_param;
582 int i;
583
584 memset(&hca_param, 0, sizeof(hca_param));
585 err = mlx4_QUERY_HCA(dev, &hca_param);
586 if (err) {
587 mlx4_err(dev, "QUERY_HCA command failed, aborting.\n");
588 return err;
589 }
590
591 /*fail if the hca has an unknown capability */
592 if ((hca_param.global_caps | HCA_GLOBAL_CAP_MASK) !=
593 HCA_GLOBAL_CAP_MASK) {
594 mlx4_err(dev, "Unknown hca global capabilities\n");
595 return -ENOSYS;
596 }
597
598 mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
599
600 dev->caps.hca_core_clock = hca_param.hca_core_clock;
601
602 memset(&dev_cap, 0, sizeof(dev_cap));
603 dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
604 err = mlx4_dev_cap(dev, &dev_cap);
605 if (err) {
606 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
607 return err;
608 }
609
610 err = mlx4_QUERY_FW(dev);
611 if (err)
612 mlx4_err(dev, "QUERY_FW command failed: could not get FW version.\n");
613
614 page_size = ~dev->caps.page_size_cap + 1;
615 mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
616 if (page_size > PAGE_SIZE) {
617 mlx4_err(dev, "HCA minimum page size of %d bigger than "
618 "kernel PAGE_SIZE of %ld, aborting.\n",
619 page_size, PAGE_SIZE);
620 return -ENODEV;
621 }
622
623 /* slave gets uar page size from QUERY_HCA fw command */
624 dev->caps.uar_page_size = 1 << (hca_param.uar_page_sz + 12);
625
626 /* TODO: relax this assumption */
627 if (dev->caps.uar_page_size != PAGE_SIZE) {
628 mlx4_err(dev, "UAR size:%d != kernel PAGE_SIZE of %ld\n",
629 dev->caps.uar_page_size, PAGE_SIZE);
630 return -ENODEV;
631 }
632
633 memset(&func_cap, 0, sizeof(func_cap));
634 err = mlx4_QUERY_FUNC_CAP(dev, 0, &func_cap);
635 if (err) {
636 mlx4_err(dev, "QUERY_FUNC_CAP general command failed, aborting (%d).\n",
637 err);
638 return err;
639 }
640
641 if ((func_cap.pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
642 PF_CONTEXT_BEHAVIOUR_MASK) {
643 mlx4_err(dev, "Unknown pf context behaviour\n");
644 return -ENOSYS;
645 }
646
647 dev->caps.num_ports = func_cap.num_ports;
648 dev->quotas.qp = func_cap.qp_quota;
649 dev->quotas.srq = func_cap.srq_quota;
650 dev->quotas.cq = func_cap.cq_quota;
651 dev->quotas.mpt = func_cap.mpt_quota;
652 dev->quotas.mtt = func_cap.mtt_quota;
653 dev->caps.num_qps = 1 << hca_param.log_num_qps;
654 dev->caps.num_srqs = 1 << hca_param.log_num_srqs;
655 dev->caps.num_cqs = 1 << hca_param.log_num_cqs;
656 dev->caps.num_mpts = 1 << hca_param.log_mpt_sz;
657 dev->caps.num_eqs = func_cap.max_eq;
658 dev->caps.reserved_eqs = func_cap.reserved_eq;
659 dev->caps.num_pds = MLX4_NUM_PDS;
660 dev->caps.num_mgms = 0;
661 dev->caps.num_amgms = 0;
662
663 if (dev->caps.num_ports > MLX4_MAX_PORTS) {
664 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
665 "aborting.\n", dev->caps.num_ports, MLX4_MAX_PORTS);
666 return -ENODEV;
667 }
668
669 dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
670 dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
671 dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
672 dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
673
674 if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy ||
675 !dev->caps.qp1_tunnel || !dev->caps.qp1_proxy) {
676 err = -ENOMEM;
677 goto err_mem;
678 }
679
680 for (i = 1; i <= dev->caps.num_ports; ++i) {
681 err = mlx4_QUERY_FUNC_CAP(dev, (u32) i, &func_cap);
682 if (err) {
683 mlx4_err(dev, "QUERY_FUNC_CAP port command failed for"
684 " port %d, aborting (%d).\n", i, err);
685 goto err_mem;
686 }
687 dev->caps.qp0_tunnel[i - 1] = func_cap.qp0_tunnel_qpn;
688 dev->caps.qp0_proxy[i - 1] = func_cap.qp0_proxy_qpn;
689 dev->caps.qp1_tunnel[i - 1] = func_cap.qp1_tunnel_qpn;
690 dev->caps.qp1_proxy[i - 1] = func_cap.qp1_proxy_qpn;
691 dev->caps.port_mask[i] = dev->caps.port_type[i];
692 dev->caps.phys_port_id[i] = func_cap.phys_port_id;
693 if (mlx4_get_slave_pkey_gid_tbl_len(dev, i,
694 &dev->caps.gid_table_len[i],
695 &dev->caps.pkey_table_len[i]))
696 goto err_mem;
697 }
698
699 if (dev->caps.uar_page_size * (dev->caps.num_uars -
700 dev->caps.reserved_uars) >
701 pci_resource_len(dev->pdev, 2)) {
702 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than "
703 "PCI resource 2 size of 0x%llx, aborting.\n",
704 dev->caps.uar_page_size * dev->caps.num_uars,
705 (unsigned long long) pci_resource_len(dev->pdev, 2));
706 goto err_mem;
707 }
708
709 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) {
710 dev->caps.eqe_size = 64;
711 dev->caps.eqe_factor = 1;
712 } else {
713 dev->caps.eqe_size = 32;
714 dev->caps.eqe_factor = 0;
715 }
716
717 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) {
718 dev->caps.cqe_size = 64;
719 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_64B_CQE;
720 } else {
721 dev->caps.cqe_size = 32;
722 }
723
724 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
725 mlx4_warn(dev, "Timestamping is not supported in slave mode.\n");
726
727 slave_adjust_steering_mode(dev, &dev_cap, &hca_param);
728
729 return 0;
730
731 err_mem:
732 kfree(dev->caps.qp0_tunnel);
733 kfree(dev->caps.qp0_proxy);
734 kfree(dev->caps.qp1_tunnel);
735 kfree(dev->caps.qp1_proxy);
736 dev->caps.qp0_tunnel = dev->caps.qp0_proxy =
737 dev->caps.qp1_tunnel = dev->caps.qp1_proxy = NULL;
738
739 return err;
740 }
741
742 static void mlx4_request_modules(struct mlx4_dev *dev)
743 {
744 int port;
745 int has_ib_port = false;
746 int has_eth_port = false;
747 #define EN_DRV_NAME "mlx4_en"
748 #define IB_DRV_NAME "mlx4_ib"
749
750 for (port = 1; port <= dev->caps.num_ports; port++) {
751 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
752 has_ib_port = true;
753 else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
754 has_eth_port = true;
755 }
756
757 if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
758 request_module_nowait(IB_DRV_NAME);
759 if (has_eth_port)
760 request_module_nowait(EN_DRV_NAME);
761 }
762
763 /*
764 * Change the port configuration of the device.
765 * Every user of this function must hold the port mutex.
766 */
767 int mlx4_change_port_types(struct mlx4_dev *dev,
768 enum mlx4_port_type *port_types)
769 {
770 int err = 0;
771 int change = 0;
772 int port;
773
774 for (port = 0; port < dev->caps.num_ports; port++) {
775 /* Change the port type only if the new type is different
776 * from the current, and not set to Auto */
777 if (port_types[port] != dev->caps.port_type[port + 1])
778 change = 1;
779 }
780 if (change) {
781 mlx4_unregister_device(dev);
782 for (port = 1; port <= dev->caps.num_ports; port++) {
783 mlx4_CLOSE_PORT(dev, port);
784 dev->caps.port_type[port] = port_types[port - 1];
785 err = mlx4_SET_PORT(dev, port, -1);
786 if (err) {
787 mlx4_err(dev, "Failed to set port %d, "
788 "aborting\n", port);
789 goto out;
790 }
791 }
792 mlx4_set_port_mask(dev);
793 err = mlx4_register_device(dev);
794 if (err) {
795 mlx4_err(dev, "Failed to register device\n");
796 goto out;
797 }
798 mlx4_request_modules(dev);
799 }
800
801 out:
802 return err;
803 }
804
805 static ssize_t show_port_type(struct device *dev,
806 struct device_attribute *attr,
807 char *buf)
808 {
809 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
810 port_attr);
811 struct mlx4_dev *mdev = info->dev;
812 char type[8];
813
814 sprintf(type, "%s",
815 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
816 "ib" : "eth");
817 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
818 sprintf(buf, "auto (%s)\n", type);
819 else
820 sprintf(buf, "%s\n", type);
821
822 return strlen(buf);
823 }
824
825 static ssize_t set_port_type(struct device *dev,
826 struct device_attribute *attr,
827 const char *buf, size_t count)
828 {
829 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
830 port_attr);
831 struct mlx4_dev *mdev = info->dev;
832 struct mlx4_priv *priv = mlx4_priv(mdev);
833 enum mlx4_port_type types[MLX4_MAX_PORTS];
834 enum mlx4_port_type new_types[MLX4_MAX_PORTS];
835 int i;
836 int err = 0;
837
838 if (!strcmp(buf, "ib\n"))
839 info->tmp_type = MLX4_PORT_TYPE_IB;
840 else if (!strcmp(buf, "eth\n"))
841 info->tmp_type = MLX4_PORT_TYPE_ETH;
842 else if (!strcmp(buf, "auto\n"))
843 info->tmp_type = MLX4_PORT_TYPE_AUTO;
844 else {
845 mlx4_err(mdev, "%s is not supported port type\n", buf);
846 return -EINVAL;
847 }
848
849 mlx4_stop_sense(mdev);
850 mutex_lock(&priv->port_mutex);
851 /* Possible type is always the one that was delivered */
852 mdev->caps.possible_type[info->port] = info->tmp_type;
853
854 for (i = 0; i < mdev->caps.num_ports; i++) {
855 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
856 mdev->caps.possible_type[i+1];
857 if (types[i] == MLX4_PORT_TYPE_AUTO)
858 types[i] = mdev->caps.port_type[i+1];
859 }
860
861 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
862 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
863 for (i = 1; i <= mdev->caps.num_ports; i++) {
864 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
865 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
866 err = -EINVAL;
867 }
868 }
869 }
870 if (err) {
871 mlx4_err(mdev, "Auto sensing is not supported on this HCA. "
872 "Set only 'eth' or 'ib' for both ports "
873 "(should be the same)\n");
874 goto out;
875 }
876
877 mlx4_do_sense_ports(mdev, new_types, types);
878
879 err = mlx4_check_port_params(mdev, new_types);
880 if (err)
881 goto out;
882
883 /* We are about to apply the changes after the configuration
884 * was verified, no need to remember the temporary types
885 * any more */
886 for (i = 0; i < mdev->caps.num_ports; i++)
887 priv->port[i + 1].tmp_type = 0;
888
889 err = mlx4_change_port_types(mdev, new_types);
890
891 out:
892 mlx4_start_sense(mdev);
893 mutex_unlock(&priv->port_mutex);
894 return err ? err : count;
895 }
896
897 enum ibta_mtu {
898 IB_MTU_256 = 1,
899 IB_MTU_512 = 2,
900 IB_MTU_1024 = 3,
901 IB_MTU_2048 = 4,
902 IB_MTU_4096 = 5
903 };
904
905 static inline int int_to_ibta_mtu(int mtu)
906 {
907 switch (mtu) {
908 case 256: return IB_MTU_256;
909 case 512: return IB_MTU_512;
910 case 1024: return IB_MTU_1024;
911 case 2048: return IB_MTU_2048;
912 case 4096: return IB_MTU_4096;
913 default: return -1;
914 }
915 }
916
917 static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
918 {
919 switch (mtu) {
920 case IB_MTU_256: return 256;
921 case IB_MTU_512: return 512;
922 case IB_MTU_1024: return 1024;
923 case IB_MTU_2048: return 2048;
924 case IB_MTU_4096: return 4096;
925 default: return -1;
926 }
927 }
928
929 static ssize_t show_port_ib_mtu(struct device *dev,
930 struct device_attribute *attr,
931 char *buf)
932 {
933 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
934 port_mtu_attr);
935 struct mlx4_dev *mdev = info->dev;
936
937 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
938 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
939
940 sprintf(buf, "%d\n",
941 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
942 return strlen(buf);
943 }
944
945 static ssize_t set_port_ib_mtu(struct device *dev,
946 struct device_attribute *attr,
947 const char *buf, size_t count)
948 {
949 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
950 port_mtu_attr);
951 struct mlx4_dev *mdev = info->dev;
952 struct mlx4_priv *priv = mlx4_priv(mdev);
953 int err, port, mtu, ibta_mtu = -1;
954
955 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
956 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
957 return -EINVAL;
958 }
959
960 err = kstrtoint(buf, 0, &mtu);
961 if (!err)
962 ibta_mtu = int_to_ibta_mtu(mtu);
963
964 if (err || ibta_mtu < 0) {
965 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
966 return -EINVAL;
967 }
968
969 mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
970
971 mlx4_stop_sense(mdev);
972 mutex_lock(&priv->port_mutex);
973 mlx4_unregister_device(mdev);
974 for (port = 1; port <= mdev->caps.num_ports; port++) {
975 mlx4_CLOSE_PORT(mdev, port);
976 err = mlx4_SET_PORT(mdev, port, -1);
977 if (err) {
978 mlx4_err(mdev, "Failed to set port %d, "
979 "aborting\n", port);
980 goto err_set_port;
981 }
982 }
983 err = mlx4_register_device(mdev);
984 err_set_port:
985 mutex_unlock(&priv->port_mutex);
986 mlx4_start_sense(mdev);
987 return err ? err : count;
988 }
989
990 static int mlx4_load_fw(struct mlx4_dev *dev)
991 {
992 struct mlx4_priv *priv = mlx4_priv(dev);
993 int err;
994
995 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
996 GFP_HIGHUSER | __GFP_NOWARN, 0);
997 if (!priv->fw.fw_icm) {
998 mlx4_err(dev, "Couldn't allocate FW area, aborting.\n");
999 return -ENOMEM;
1000 }
1001
1002 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
1003 if (err) {
1004 mlx4_err(dev, "MAP_FA command failed, aborting.\n");
1005 goto err_free;
1006 }
1007
1008 err = mlx4_RUN_FW(dev);
1009 if (err) {
1010 mlx4_err(dev, "RUN_FW command failed, aborting.\n");
1011 goto err_unmap_fa;
1012 }
1013
1014 return 0;
1015
1016 err_unmap_fa:
1017 mlx4_UNMAP_FA(dev);
1018
1019 err_free:
1020 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1021 return err;
1022 }
1023
1024 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
1025 int cmpt_entry_sz)
1026 {
1027 struct mlx4_priv *priv = mlx4_priv(dev);
1028 int err;
1029 int num_eqs;
1030
1031 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
1032 cmpt_base +
1033 ((u64) (MLX4_CMPT_TYPE_QP *
1034 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1035 cmpt_entry_sz, dev->caps.num_qps,
1036 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1037 0, 0);
1038 if (err)
1039 goto err;
1040
1041 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
1042 cmpt_base +
1043 ((u64) (MLX4_CMPT_TYPE_SRQ *
1044 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1045 cmpt_entry_sz, dev->caps.num_srqs,
1046 dev->caps.reserved_srqs, 0, 0);
1047 if (err)
1048 goto err_qp;
1049
1050 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
1051 cmpt_base +
1052 ((u64) (MLX4_CMPT_TYPE_CQ *
1053 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1054 cmpt_entry_sz, dev->caps.num_cqs,
1055 dev->caps.reserved_cqs, 0, 0);
1056 if (err)
1057 goto err_srq;
1058
1059 num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
1060 dev->caps.num_eqs;
1061 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
1062 cmpt_base +
1063 ((u64) (MLX4_CMPT_TYPE_EQ *
1064 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1065 cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
1066 if (err)
1067 goto err_cq;
1068
1069 return 0;
1070
1071 err_cq:
1072 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1073
1074 err_srq:
1075 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1076
1077 err_qp:
1078 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1079
1080 err:
1081 return err;
1082 }
1083
1084 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
1085 struct mlx4_init_hca_param *init_hca, u64 icm_size)
1086 {
1087 struct mlx4_priv *priv = mlx4_priv(dev);
1088 u64 aux_pages;
1089 int num_eqs;
1090 int err;
1091
1092 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
1093 if (err) {
1094 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting.\n");
1095 return err;
1096 }
1097
1098 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory.\n",
1099 (unsigned long long) icm_size >> 10,
1100 (unsigned long long) aux_pages << 2);
1101
1102 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
1103 GFP_HIGHUSER | __GFP_NOWARN, 0);
1104 if (!priv->fw.aux_icm) {
1105 mlx4_err(dev, "Couldn't allocate aux memory, aborting.\n");
1106 return -ENOMEM;
1107 }
1108
1109 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
1110 if (err) {
1111 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting.\n");
1112 goto err_free_aux;
1113 }
1114
1115 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
1116 if (err) {
1117 mlx4_err(dev, "Failed to map cMPT context memory, aborting.\n");
1118 goto err_unmap_aux;
1119 }
1120
1121
1122 num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
1123 dev->caps.num_eqs;
1124 err = mlx4_init_icm_table(dev, &priv->eq_table.table,
1125 init_hca->eqc_base, dev_cap->eqc_entry_sz,
1126 num_eqs, num_eqs, 0, 0);
1127 if (err) {
1128 mlx4_err(dev, "Failed to map EQ context memory, aborting.\n");
1129 goto err_unmap_cmpt;
1130 }
1131
1132 /*
1133 * Reserved MTT entries must be aligned up to a cacheline
1134 * boundary, since the FW will write to them, while the driver
1135 * writes to all other MTT entries. (The variable
1136 * dev->caps.mtt_entry_sz below is really the MTT segment
1137 * size, not the raw entry size)
1138 */
1139 dev->caps.reserved_mtts =
1140 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
1141 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
1142
1143 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
1144 init_hca->mtt_base,
1145 dev->caps.mtt_entry_sz,
1146 dev->caps.num_mtts,
1147 dev->caps.reserved_mtts, 1, 0);
1148 if (err) {
1149 mlx4_err(dev, "Failed to map MTT context memory, aborting.\n");
1150 goto err_unmap_eq;
1151 }
1152
1153 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
1154 init_hca->dmpt_base,
1155 dev_cap->dmpt_entry_sz,
1156 dev->caps.num_mpts,
1157 dev->caps.reserved_mrws, 1, 1);
1158 if (err) {
1159 mlx4_err(dev, "Failed to map dMPT context memory, aborting.\n");
1160 goto err_unmap_mtt;
1161 }
1162
1163 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
1164 init_hca->qpc_base,
1165 dev_cap->qpc_entry_sz,
1166 dev->caps.num_qps,
1167 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1168 0, 0);
1169 if (err) {
1170 mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
1171 goto err_unmap_dmpt;
1172 }
1173
1174 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
1175 init_hca->auxc_base,
1176 dev_cap->aux_entry_sz,
1177 dev->caps.num_qps,
1178 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1179 0, 0);
1180 if (err) {
1181 mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
1182 goto err_unmap_qp;
1183 }
1184
1185 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
1186 init_hca->altc_base,
1187 dev_cap->altc_entry_sz,
1188 dev->caps.num_qps,
1189 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1190 0, 0);
1191 if (err) {
1192 mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
1193 goto err_unmap_auxc;
1194 }
1195
1196 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
1197 init_hca->rdmarc_base,
1198 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
1199 dev->caps.num_qps,
1200 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1201 0, 0);
1202 if (err) {
1203 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
1204 goto err_unmap_altc;
1205 }
1206
1207 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
1208 init_hca->cqc_base,
1209 dev_cap->cqc_entry_sz,
1210 dev->caps.num_cqs,
1211 dev->caps.reserved_cqs, 0, 0);
1212 if (err) {
1213 mlx4_err(dev, "Failed to map CQ context memory, aborting.\n");
1214 goto err_unmap_rdmarc;
1215 }
1216
1217 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
1218 init_hca->srqc_base,
1219 dev_cap->srq_entry_sz,
1220 dev->caps.num_srqs,
1221 dev->caps.reserved_srqs, 0, 0);
1222 if (err) {
1223 mlx4_err(dev, "Failed to map SRQ context memory, aborting.\n");
1224 goto err_unmap_cq;
1225 }
1226
1227 /*
1228 * For flow steering device managed mode it is required to use
1229 * mlx4_init_icm_table. For B0 steering mode it's not strictly
1230 * required, but for simplicity just map the whole multicast
1231 * group table now. The table isn't very big and it's a lot
1232 * easier than trying to track ref counts.
1233 */
1234 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1235 init_hca->mc_base,
1236 mlx4_get_mgm_entry_size(dev),
1237 dev->caps.num_mgms + dev->caps.num_amgms,
1238 dev->caps.num_mgms + dev->caps.num_amgms,
1239 0, 0);
1240 if (err) {
1241 mlx4_err(dev, "Failed to map MCG context memory, aborting.\n");
1242 goto err_unmap_srq;
1243 }
1244
1245 return 0;
1246
1247 err_unmap_srq:
1248 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1249
1250 err_unmap_cq:
1251 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1252
1253 err_unmap_rdmarc:
1254 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1255
1256 err_unmap_altc:
1257 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1258
1259 err_unmap_auxc:
1260 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1261
1262 err_unmap_qp:
1263 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1264
1265 err_unmap_dmpt:
1266 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1267
1268 err_unmap_mtt:
1269 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1270
1271 err_unmap_eq:
1272 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1273
1274 err_unmap_cmpt:
1275 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1276 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1277 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1278 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1279
1280 err_unmap_aux:
1281 mlx4_UNMAP_ICM_AUX(dev);
1282
1283 err_free_aux:
1284 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1285
1286 return err;
1287 }
1288
1289 static void mlx4_free_icms(struct mlx4_dev *dev)
1290 {
1291 struct mlx4_priv *priv = mlx4_priv(dev);
1292
1293 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1294 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1295 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1296 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1297 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1298 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1299 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1300 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1301 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1302 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1303 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1304 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1305 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1306 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1307
1308 mlx4_UNMAP_ICM_AUX(dev);
1309 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1310 }
1311
1312 static void mlx4_slave_exit(struct mlx4_dev *dev)
1313 {
1314 struct mlx4_priv *priv = mlx4_priv(dev);
1315
1316 mutex_lock(&priv->cmd.slave_cmd_mutex);
1317 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_TIME))
1318 mlx4_warn(dev, "Failed to close slave function.\n");
1319 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1320 }
1321
1322 static int map_bf_area(struct mlx4_dev *dev)
1323 {
1324 struct mlx4_priv *priv = mlx4_priv(dev);
1325 resource_size_t bf_start;
1326 resource_size_t bf_len;
1327 int err = 0;
1328
1329 if (!dev->caps.bf_reg_size)
1330 return -ENXIO;
1331
1332 bf_start = pci_resource_start(dev->pdev, 2) +
1333 (dev->caps.num_uars << PAGE_SHIFT);
1334 bf_len = pci_resource_len(dev->pdev, 2) -
1335 (dev->caps.num_uars << PAGE_SHIFT);
1336 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1337 if (!priv->bf_mapping)
1338 err = -ENOMEM;
1339
1340 return err;
1341 }
1342
1343 static void unmap_bf_area(struct mlx4_dev *dev)
1344 {
1345 if (mlx4_priv(dev)->bf_mapping)
1346 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1347 }
1348
1349 cycle_t mlx4_read_clock(struct mlx4_dev *dev)
1350 {
1351 u32 clockhi, clocklo, clockhi1;
1352 cycle_t cycles;
1353 int i;
1354 struct mlx4_priv *priv = mlx4_priv(dev);
1355
1356 for (i = 0; i < 10; i++) {
1357 clockhi = swab32(readl(priv->clock_mapping));
1358 clocklo = swab32(readl(priv->clock_mapping + 4));
1359 clockhi1 = swab32(readl(priv->clock_mapping));
1360 if (clockhi == clockhi1)
1361 break;
1362 }
1363
1364 cycles = (u64) clockhi << 32 | (u64) clocklo;
1365
1366 return cycles;
1367 }
1368 EXPORT_SYMBOL_GPL(mlx4_read_clock);
1369
1370
1371 static int map_internal_clock(struct mlx4_dev *dev)
1372 {
1373 struct mlx4_priv *priv = mlx4_priv(dev);
1374
1375 priv->clock_mapping =
1376 ioremap(pci_resource_start(dev->pdev, priv->fw.clock_bar) +
1377 priv->fw.clock_offset, MLX4_CLOCK_SIZE);
1378
1379 if (!priv->clock_mapping)
1380 return -ENOMEM;
1381
1382 return 0;
1383 }
1384
1385 static void unmap_internal_clock(struct mlx4_dev *dev)
1386 {
1387 struct mlx4_priv *priv = mlx4_priv(dev);
1388
1389 if (priv->clock_mapping)
1390 iounmap(priv->clock_mapping);
1391 }
1392
1393 static void mlx4_close_hca(struct mlx4_dev *dev)
1394 {
1395 unmap_internal_clock(dev);
1396 unmap_bf_area(dev);
1397 if (mlx4_is_slave(dev))
1398 mlx4_slave_exit(dev);
1399 else {
1400 mlx4_CLOSE_HCA(dev, 0);
1401 mlx4_free_icms(dev);
1402 mlx4_UNMAP_FA(dev);
1403 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1404 }
1405 }
1406
1407 static int mlx4_init_slave(struct mlx4_dev *dev)
1408 {
1409 struct mlx4_priv *priv = mlx4_priv(dev);
1410 u64 dma = (u64) priv->mfunc.vhcr_dma;
1411 int ret_from_reset = 0;
1412 u32 slave_read;
1413 u32 cmd_channel_ver;
1414
1415 if (atomic_read(&pf_loading)) {
1416 mlx4_warn(dev, "PF is not ready. Deferring probe\n");
1417 return -EPROBE_DEFER;
1418 }
1419
1420 mutex_lock(&priv->cmd.slave_cmd_mutex);
1421 priv->cmd.max_cmds = 1;
1422 mlx4_warn(dev, "Sending reset\n");
1423 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
1424 MLX4_COMM_TIME);
1425 /* if we are in the middle of flr the slave will try
1426 * NUM_OF_RESET_RETRIES times before leaving.*/
1427 if (ret_from_reset) {
1428 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
1429 mlx4_warn(dev, "slave is currently in the "
1430 "middle of FLR. Deferring probe.\n");
1431 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1432 return -EPROBE_DEFER;
1433 } else
1434 goto err;
1435 }
1436
1437 /* check the driver version - the slave I/F revision
1438 * must match the master's */
1439 slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
1440 cmd_channel_ver = mlx4_comm_get_version();
1441
1442 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
1443 MLX4_COMM_GET_IF_REV(slave_read)) {
1444 mlx4_err(dev, "slave driver version is not supported"
1445 " by the master\n");
1446 goto err;
1447 }
1448
1449 mlx4_warn(dev, "Sending vhcr0\n");
1450 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
1451 MLX4_COMM_TIME))
1452 goto err;
1453 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
1454 MLX4_COMM_TIME))
1455 goto err;
1456 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
1457 MLX4_COMM_TIME))
1458 goto err;
1459 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma, MLX4_COMM_TIME))
1460 goto err;
1461
1462 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1463 return 0;
1464
1465 err:
1466 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, 0);
1467 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1468 return -EIO;
1469 }
1470
1471 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
1472 {
1473 int i;
1474
1475 for (i = 1; i <= dev->caps.num_ports; i++) {
1476 if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
1477 dev->caps.gid_table_len[i] =
1478 mlx4_get_slave_num_gids(dev, 0, i);
1479 else
1480 dev->caps.gid_table_len[i] = 1;
1481 dev->caps.pkey_table_len[i] =
1482 dev->phys_caps.pkey_phys_table_len[i] - 1;
1483 }
1484 }
1485
1486 static int choose_log_fs_mgm_entry_size(int qp_per_entry)
1487 {
1488 int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE;
1489
1490 for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE;
1491 i++) {
1492 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2))
1493 break;
1494 }
1495
1496 return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1;
1497 }
1498
1499 static void choose_steering_mode(struct mlx4_dev *dev,
1500 struct mlx4_dev_cap *dev_cap)
1501 {
1502 if (mlx4_log_num_mgm_entry_size == -1 &&
1503 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN &&
1504 (!mlx4_is_mfunc(dev) ||
1505 (dev_cap->fs_max_num_qp_per_entry >= (dev->num_vfs + 1))) &&
1506 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >=
1507 MLX4_MIN_MGM_LOG_ENTRY_SIZE) {
1508 dev->oper_log_mgm_entry_size =
1509 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry);
1510 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
1511 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
1512 dev->caps.fs_log_max_ucast_qp_range_size =
1513 dev_cap->fs_log_max_ucast_qp_range_size;
1514 } else {
1515 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER &&
1516 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1517 dev->caps.steering_mode = MLX4_STEERING_MODE_B0;
1518 else {
1519 dev->caps.steering_mode = MLX4_STEERING_MODE_A0;
1520
1521 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER ||
1522 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1523 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags "
1524 "set to use B0 steering. Falling back to A0 steering mode.\n");
1525 }
1526 dev->oper_log_mgm_entry_size =
1527 mlx4_log_num_mgm_entry_size > 0 ?
1528 mlx4_log_num_mgm_entry_size :
1529 MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
1530 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev);
1531 }
1532 mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, "
1533 "modparam log_num_mgm_entry_size = %d\n",
1534 mlx4_steering_mode_str(dev->caps.steering_mode),
1535 dev->oper_log_mgm_entry_size,
1536 mlx4_log_num_mgm_entry_size);
1537 }
1538
1539 static void choose_tunnel_offload_mode(struct mlx4_dev *dev,
1540 struct mlx4_dev_cap *dev_cap)
1541 {
1542 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED &&
1543 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
1544 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_VXLAN;
1545 else
1546 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_NONE;
1547
1548 mlx4_dbg(dev, "Tunneling offload mode is: %s\n", (dev->caps.tunnel_offload_mode
1549 == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) ? "vxlan" : "none");
1550 }
1551
1552 static int mlx4_init_hca(struct mlx4_dev *dev)
1553 {
1554 struct mlx4_priv *priv = mlx4_priv(dev);
1555 struct mlx4_adapter adapter;
1556 struct mlx4_dev_cap dev_cap;
1557 struct mlx4_mod_stat_cfg mlx4_cfg;
1558 struct mlx4_profile profile;
1559 struct mlx4_init_hca_param init_hca;
1560 u64 icm_size;
1561 int err;
1562
1563 if (!mlx4_is_slave(dev)) {
1564 err = mlx4_QUERY_FW(dev);
1565 if (err) {
1566 if (err == -EACCES)
1567 mlx4_info(dev, "non-primary physical function, skipping.\n");
1568 else
1569 mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
1570 return err;
1571 }
1572
1573 err = mlx4_load_fw(dev);
1574 if (err) {
1575 mlx4_err(dev, "Failed to start FW, aborting.\n");
1576 return err;
1577 }
1578
1579 mlx4_cfg.log_pg_sz_m = 1;
1580 mlx4_cfg.log_pg_sz = 0;
1581 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
1582 if (err)
1583 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
1584
1585 err = mlx4_dev_cap(dev, &dev_cap);
1586 if (err) {
1587 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
1588 goto err_stop_fw;
1589 }
1590
1591 choose_steering_mode(dev, &dev_cap);
1592 choose_tunnel_offload_mode(dev, &dev_cap);
1593
1594 err = mlx4_get_phys_port_id(dev);
1595 if (err)
1596 mlx4_err(dev, "Fail to get physical port id\n");
1597
1598 if (mlx4_is_master(dev))
1599 mlx4_parav_master_pf_caps(dev);
1600
1601 profile = default_profile;
1602 if (dev->caps.steering_mode ==
1603 MLX4_STEERING_MODE_DEVICE_MANAGED)
1604 profile.num_mcg = MLX4_FS_NUM_MCG;
1605
1606 icm_size = mlx4_make_profile(dev, &profile, &dev_cap,
1607 &init_hca);
1608 if ((long long) icm_size < 0) {
1609 err = icm_size;
1610 goto err_stop_fw;
1611 }
1612
1613 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
1614
1615 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
1616 init_hca.uar_page_sz = PAGE_SHIFT - 12;
1617 init_hca.mw_enabled = 0;
1618 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
1619 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
1620 init_hca.mw_enabled = INIT_HCA_TPT_MW_ENABLE;
1621
1622 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
1623 if (err)
1624 goto err_stop_fw;
1625
1626 err = mlx4_INIT_HCA(dev, &init_hca);
1627 if (err) {
1628 mlx4_err(dev, "INIT_HCA command failed, aborting.\n");
1629 goto err_free_icm;
1630 }
1631 /*
1632 * If TS is supported by FW
1633 * read HCA frequency by QUERY_HCA command
1634 */
1635 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
1636 memset(&init_hca, 0, sizeof(init_hca));
1637 err = mlx4_QUERY_HCA(dev, &init_hca);
1638 if (err) {
1639 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp.\n");
1640 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1641 } else {
1642 dev->caps.hca_core_clock =
1643 init_hca.hca_core_clock;
1644 }
1645
1646 /* In case we got HCA frequency 0 - disable timestamping
1647 * to avoid dividing by zero
1648 */
1649 if (!dev->caps.hca_core_clock) {
1650 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1651 mlx4_err(dev,
1652 "HCA frequency is 0. Timestamping is not supported.");
1653 } else if (map_internal_clock(dev)) {
1654 /*
1655 * Map internal clock,
1656 * in case of failure disable timestamping
1657 */
1658 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1659 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported.\n");
1660 }
1661 }
1662 } else {
1663 err = mlx4_init_slave(dev);
1664 if (err) {
1665 if (err != -EPROBE_DEFER)
1666 mlx4_err(dev, "Failed to initialize slave\n");
1667 return err;
1668 }
1669
1670 err = mlx4_slave_cap(dev);
1671 if (err) {
1672 mlx4_err(dev, "Failed to obtain slave caps\n");
1673 goto err_close;
1674 }
1675 }
1676
1677 if (map_bf_area(dev))
1678 mlx4_dbg(dev, "Failed to map blue flame area\n");
1679
1680 /*Only the master set the ports, all the rest got it from it.*/
1681 if (!mlx4_is_slave(dev))
1682 mlx4_set_port_mask(dev);
1683
1684 err = mlx4_QUERY_ADAPTER(dev, &adapter);
1685 if (err) {
1686 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting.\n");
1687 goto unmap_bf;
1688 }
1689
1690 priv->eq_table.inta_pin = adapter.inta_pin;
1691 memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
1692
1693 return 0;
1694
1695 unmap_bf:
1696 unmap_internal_clock(dev);
1697 unmap_bf_area(dev);
1698
1699 err_close:
1700 if (mlx4_is_slave(dev))
1701 mlx4_slave_exit(dev);
1702 else
1703 mlx4_CLOSE_HCA(dev, 0);
1704
1705 err_free_icm:
1706 if (!mlx4_is_slave(dev))
1707 mlx4_free_icms(dev);
1708
1709 err_stop_fw:
1710 if (!mlx4_is_slave(dev)) {
1711 mlx4_UNMAP_FA(dev);
1712 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1713 }
1714 return err;
1715 }
1716
1717 static int mlx4_init_counters_table(struct mlx4_dev *dev)
1718 {
1719 struct mlx4_priv *priv = mlx4_priv(dev);
1720 int nent;
1721
1722 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1723 return -ENOENT;
1724
1725 nent = dev->caps.max_counters;
1726 return mlx4_bitmap_init(&priv->counters_bitmap, nent, nent - 1, 0, 0);
1727 }
1728
1729 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
1730 {
1731 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
1732 }
1733
1734 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1735 {
1736 struct mlx4_priv *priv = mlx4_priv(dev);
1737
1738 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1739 return -ENOENT;
1740
1741 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
1742 if (*idx == -1)
1743 return -ENOMEM;
1744
1745 return 0;
1746 }
1747
1748 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1749 {
1750 u64 out_param;
1751 int err;
1752
1753 if (mlx4_is_mfunc(dev)) {
1754 err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
1755 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
1756 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
1757 if (!err)
1758 *idx = get_param_l(&out_param);
1759
1760 return err;
1761 }
1762 return __mlx4_counter_alloc(dev, idx);
1763 }
1764 EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
1765
1766 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1767 {
1768 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR);
1769 return;
1770 }
1771
1772 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1773 {
1774 u64 in_param = 0;
1775
1776 if (mlx4_is_mfunc(dev)) {
1777 set_param_l(&in_param, idx);
1778 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
1779 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
1780 MLX4_CMD_WRAPPED);
1781 return;
1782 }
1783 __mlx4_counter_free(dev, idx);
1784 }
1785 EXPORT_SYMBOL_GPL(mlx4_counter_free);
1786
1787 static int mlx4_setup_hca(struct mlx4_dev *dev)
1788 {
1789 struct mlx4_priv *priv = mlx4_priv(dev);
1790 int err;
1791 int port;
1792 __be32 ib_port_default_caps;
1793
1794 err = mlx4_init_uar_table(dev);
1795 if (err) {
1796 mlx4_err(dev, "Failed to initialize "
1797 "user access region table, aborting.\n");
1798 return err;
1799 }
1800
1801 err = mlx4_uar_alloc(dev, &priv->driver_uar);
1802 if (err) {
1803 mlx4_err(dev, "Failed to allocate driver access region, "
1804 "aborting.\n");
1805 goto err_uar_table_free;
1806 }
1807
1808 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
1809 if (!priv->kar) {
1810 mlx4_err(dev, "Couldn't map kernel access region, "
1811 "aborting.\n");
1812 err = -ENOMEM;
1813 goto err_uar_free;
1814 }
1815
1816 err = mlx4_init_pd_table(dev);
1817 if (err) {
1818 mlx4_err(dev, "Failed to initialize "
1819 "protection domain table, aborting.\n");
1820 goto err_kar_unmap;
1821 }
1822
1823 err = mlx4_init_xrcd_table(dev);
1824 if (err) {
1825 mlx4_err(dev, "Failed to initialize "
1826 "reliable connection domain table, aborting.\n");
1827 goto err_pd_table_free;
1828 }
1829
1830 err = mlx4_init_mr_table(dev);
1831 if (err) {
1832 mlx4_err(dev, "Failed to initialize "
1833 "memory region table, aborting.\n");
1834 goto err_xrcd_table_free;
1835 }
1836
1837 if (!mlx4_is_slave(dev)) {
1838 err = mlx4_init_mcg_table(dev);
1839 if (err) {
1840 mlx4_err(dev, "Failed to initialize multicast group table, aborting.\n");
1841 goto err_mr_table_free;
1842 }
1843 }
1844
1845 err = mlx4_init_eq_table(dev);
1846 if (err) {
1847 mlx4_err(dev, "Failed to initialize "
1848 "event queue table, aborting.\n");
1849 goto err_mcg_table_free;
1850 }
1851
1852 err = mlx4_cmd_use_events(dev);
1853 if (err) {
1854 mlx4_err(dev, "Failed to switch to event-driven "
1855 "firmware commands, aborting.\n");
1856 goto err_eq_table_free;
1857 }
1858
1859 err = mlx4_NOP(dev);
1860 if (err) {
1861 if (dev->flags & MLX4_FLAG_MSI_X) {
1862 mlx4_warn(dev, "NOP command failed to generate MSI-X "
1863 "interrupt IRQ %d).\n",
1864 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1865 mlx4_warn(dev, "Trying again without MSI-X.\n");
1866 } else {
1867 mlx4_err(dev, "NOP command failed to generate interrupt "
1868 "(IRQ %d), aborting.\n",
1869 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1870 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
1871 }
1872
1873 goto err_cmd_poll;
1874 }
1875
1876 mlx4_dbg(dev, "NOP command IRQ test passed\n");
1877
1878 err = mlx4_init_cq_table(dev);
1879 if (err) {
1880 mlx4_err(dev, "Failed to initialize "
1881 "completion queue table, aborting.\n");
1882 goto err_cmd_poll;
1883 }
1884
1885 err = mlx4_init_srq_table(dev);
1886 if (err) {
1887 mlx4_err(dev, "Failed to initialize "
1888 "shared receive queue table, aborting.\n");
1889 goto err_cq_table_free;
1890 }
1891
1892 err = mlx4_init_qp_table(dev);
1893 if (err) {
1894 mlx4_err(dev, "Failed to initialize "
1895 "queue pair table, aborting.\n");
1896 goto err_srq_table_free;
1897 }
1898
1899 err = mlx4_init_counters_table(dev);
1900 if (err && err != -ENOENT) {
1901 mlx4_err(dev, "Failed to initialize counters table, aborting.\n");
1902 goto err_qp_table_free;
1903 }
1904
1905 if (!mlx4_is_slave(dev)) {
1906 for (port = 1; port <= dev->caps.num_ports; port++) {
1907 ib_port_default_caps = 0;
1908 err = mlx4_get_port_ib_caps(dev, port,
1909 &ib_port_default_caps);
1910 if (err)
1911 mlx4_warn(dev, "failed to get port %d default "
1912 "ib capabilities (%d). Continuing "
1913 "with caps = 0\n", port, err);
1914 dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
1915
1916 /* initialize per-slave default ib port capabilities */
1917 if (mlx4_is_master(dev)) {
1918 int i;
1919 for (i = 0; i < dev->num_slaves; i++) {
1920 if (i == mlx4_master_func_num(dev))
1921 continue;
1922 priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
1923 ib_port_default_caps;
1924 }
1925 }
1926
1927 if (mlx4_is_mfunc(dev))
1928 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
1929 else
1930 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
1931
1932 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
1933 dev->caps.pkey_table_len[port] : -1);
1934 if (err) {
1935 mlx4_err(dev, "Failed to set port %d, aborting\n",
1936 port);
1937 goto err_counters_table_free;
1938 }
1939 }
1940 }
1941
1942 return 0;
1943
1944 err_counters_table_free:
1945 mlx4_cleanup_counters_table(dev);
1946
1947 err_qp_table_free:
1948 mlx4_cleanup_qp_table(dev);
1949
1950 err_srq_table_free:
1951 mlx4_cleanup_srq_table(dev);
1952
1953 err_cq_table_free:
1954 mlx4_cleanup_cq_table(dev);
1955
1956 err_cmd_poll:
1957 mlx4_cmd_use_polling(dev);
1958
1959 err_eq_table_free:
1960 mlx4_cleanup_eq_table(dev);
1961
1962 err_mcg_table_free:
1963 if (!mlx4_is_slave(dev))
1964 mlx4_cleanup_mcg_table(dev);
1965
1966 err_mr_table_free:
1967 mlx4_cleanup_mr_table(dev);
1968
1969 err_xrcd_table_free:
1970 mlx4_cleanup_xrcd_table(dev);
1971
1972 err_pd_table_free:
1973 mlx4_cleanup_pd_table(dev);
1974
1975 err_kar_unmap:
1976 iounmap(priv->kar);
1977
1978 err_uar_free:
1979 mlx4_uar_free(dev, &priv->driver_uar);
1980
1981 err_uar_table_free:
1982 mlx4_cleanup_uar_table(dev);
1983 return err;
1984 }
1985
1986 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
1987 {
1988 struct mlx4_priv *priv = mlx4_priv(dev);
1989 struct msix_entry *entries;
1990 int nreq = min_t(int, dev->caps.num_ports *
1991 min_t(int, num_online_cpus() + 1,
1992 MAX_MSIX_P_PORT) + MSIX_LEGACY_SZ, MAX_MSIX);
1993 int i;
1994
1995 if (msi_x) {
1996 nreq = min_t(int, dev->caps.num_eqs - dev->caps.reserved_eqs,
1997 nreq);
1998
1999 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
2000 if (!entries)
2001 goto no_msi;
2002
2003 for (i = 0; i < nreq; ++i)
2004 entries[i].entry = i;
2005
2006 nreq = pci_enable_msix_range(dev->pdev, entries, 2, nreq);
2007
2008 if (nreq < 0) {
2009 kfree(entries);
2010 goto no_msi;
2011 } else if (nreq < MSIX_LEGACY_SZ +
2012 dev->caps.num_ports * MIN_MSIX_P_PORT) {
2013 /*Working in legacy mode , all EQ's shared*/
2014 dev->caps.comp_pool = 0;
2015 dev->caps.num_comp_vectors = nreq - 1;
2016 } else {
2017 dev->caps.comp_pool = nreq - MSIX_LEGACY_SZ;
2018 dev->caps.num_comp_vectors = MSIX_LEGACY_SZ - 1;
2019 }
2020 for (i = 0; i < nreq; ++i)
2021 priv->eq_table.eq[i].irq = entries[i].vector;
2022
2023 dev->flags |= MLX4_FLAG_MSI_X;
2024
2025 kfree(entries);
2026 return;
2027 }
2028
2029 no_msi:
2030 dev->caps.num_comp_vectors = 1;
2031 dev->caps.comp_pool = 0;
2032
2033 for (i = 0; i < 2; ++i)
2034 priv->eq_table.eq[i].irq = dev->pdev->irq;
2035 }
2036
2037 static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
2038 {
2039 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
2040 int err = 0;
2041
2042 info->dev = dev;
2043 info->port = port;
2044 if (!mlx4_is_slave(dev)) {
2045 mlx4_init_mac_table(dev, &info->mac_table);
2046 mlx4_init_vlan_table(dev, &info->vlan_table);
2047 info->base_qpn = mlx4_get_base_qpn(dev, port);
2048 }
2049
2050 sprintf(info->dev_name, "mlx4_port%d", port);
2051 info->port_attr.attr.name = info->dev_name;
2052 if (mlx4_is_mfunc(dev))
2053 info->port_attr.attr.mode = S_IRUGO;
2054 else {
2055 info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
2056 info->port_attr.store = set_port_type;
2057 }
2058 info->port_attr.show = show_port_type;
2059 sysfs_attr_init(&info->port_attr.attr);
2060
2061 err = device_create_file(&dev->pdev->dev, &info->port_attr);
2062 if (err) {
2063 mlx4_err(dev, "Failed to create file for port %d\n", port);
2064 info->port = -1;
2065 }
2066
2067 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
2068 info->port_mtu_attr.attr.name = info->dev_mtu_name;
2069 if (mlx4_is_mfunc(dev))
2070 info->port_mtu_attr.attr.mode = S_IRUGO;
2071 else {
2072 info->port_mtu_attr.attr.mode = S_IRUGO | S_IWUSR;
2073 info->port_mtu_attr.store = set_port_ib_mtu;
2074 }
2075 info->port_mtu_attr.show = show_port_ib_mtu;
2076 sysfs_attr_init(&info->port_mtu_attr.attr);
2077
2078 err = device_create_file(&dev->pdev->dev, &info->port_mtu_attr);
2079 if (err) {
2080 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
2081 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
2082 info->port = -1;
2083 }
2084
2085 return err;
2086 }
2087
2088 static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
2089 {
2090 if (info->port < 0)
2091 return;
2092
2093 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
2094 device_remove_file(&info->dev->pdev->dev, &info->port_mtu_attr);
2095 }
2096
2097 static int mlx4_init_steering(struct mlx4_dev *dev)
2098 {
2099 struct mlx4_priv *priv = mlx4_priv(dev);
2100 int num_entries = dev->caps.num_ports;
2101 int i, j;
2102
2103 priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL);
2104 if (!priv->steer)
2105 return -ENOMEM;
2106
2107 for (i = 0; i < num_entries; i++)
2108 for (j = 0; j < MLX4_NUM_STEERS; j++) {
2109 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
2110 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
2111 }
2112 return 0;
2113 }
2114
2115 static void mlx4_clear_steering(struct mlx4_dev *dev)
2116 {
2117 struct mlx4_priv *priv = mlx4_priv(dev);
2118 struct mlx4_steer_index *entry, *tmp_entry;
2119 struct mlx4_promisc_qp *pqp, *tmp_pqp;
2120 int num_entries = dev->caps.num_ports;
2121 int i, j;
2122
2123 for (i = 0; i < num_entries; i++) {
2124 for (j = 0; j < MLX4_NUM_STEERS; j++) {
2125 list_for_each_entry_safe(pqp, tmp_pqp,
2126 &priv->steer[i].promisc_qps[j],
2127 list) {
2128 list_del(&pqp->list);
2129 kfree(pqp);
2130 }
2131 list_for_each_entry_safe(entry, tmp_entry,
2132 &priv->steer[i].steer_entries[j],
2133 list) {
2134 list_del(&entry->list);
2135 list_for_each_entry_safe(pqp, tmp_pqp,
2136 &entry->duplicates,
2137 list) {
2138 list_del(&pqp->list);
2139 kfree(pqp);
2140 }
2141 kfree(entry);
2142 }
2143 }
2144 }
2145 kfree(priv->steer);
2146 }
2147
2148 static int extended_func_num(struct pci_dev *pdev)
2149 {
2150 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
2151 }
2152
2153 #define MLX4_OWNER_BASE 0x8069c
2154 #define MLX4_OWNER_SIZE 4
2155
2156 static int mlx4_get_ownership(struct mlx4_dev *dev)
2157 {
2158 void __iomem *owner;
2159 u32 ret;
2160
2161 if (pci_channel_offline(dev->pdev))
2162 return -EIO;
2163
2164 owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
2165 MLX4_OWNER_SIZE);
2166 if (!owner) {
2167 mlx4_err(dev, "Failed to obtain ownership bit\n");
2168 return -ENOMEM;
2169 }
2170
2171 ret = readl(owner);
2172 iounmap(owner);
2173 return (int) !!ret;
2174 }
2175
2176 static void mlx4_free_ownership(struct mlx4_dev *dev)
2177 {
2178 void __iomem *owner;
2179
2180 if (pci_channel_offline(dev->pdev))
2181 return;
2182
2183 owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
2184 MLX4_OWNER_SIZE);
2185 if (!owner) {
2186 mlx4_err(dev, "Failed to obtain ownership bit\n");
2187 return;
2188 }
2189 writel(0, owner);
2190 msleep(1000);
2191 iounmap(owner);
2192 }
2193
2194 static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data)
2195 {
2196 struct mlx4_priv *priv;
2197 struct mlx4_dev *dev;
2198 int err;
2199 int port;
2200 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
2201 int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0};
2202 const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = {
2203 {2, 0, 0}, {0, 1, 2}, {0, 1, 2} };
2204 unsigned total_vfs = 0;
2205 int sriov_initialized = 0;
2206 unsigned int i;
2207
2208 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
2209
2210 err = pci_enable_device(pdev);
2211 if (err) {
2212 dev_err(&pdev->dev, "Cannot enable PCI device, "
2213 "aborting.\n");
2214 return err;
2215 }
2216
2217 /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS
2218 * per port, we must limit the number of VFs to 63 (since their are
2219 * 128 MACs)
2220 */
2221 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) && i < num_vfs_argc;
2222 total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) {
2223 nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i];
2224 if (nvfs[i] < 0) {
2225 dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n");
2226 return -EINVAL;
2227 }
2228 }
2229 for (i = 0; i < sizeof(prb_vf)/sizeof(prb_vf[0]) && i < probe_vfs_argc;
2230 i++) {
2231 prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i];
2232 if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) {
2233 dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n");
2234 return -EINVAL;
2235 }
2236 }
2237 if (total_vfs >= MLX4_MAX_NUM_VF) {
2238 dev_err(&pdev->dev,
2239 "Requested more VF's (%d) than allowed (%d)\n",
2240 total_vfs, MLX4_MAX_NUM_VF - 1);
2241 return -EINVAL;
2242 }
2243
2244 for (i = 0; i < MLX4_MAX_PORTS; i++) {
2245 if (nvfs[i] + nvfs[2] >= MLX4_MAX_NUM_VF_P_PORT) {
2246 dev_err(&pdev->dev,
2247 "Requested more VF's (%d) for port (%d) than allowed (%d)\n",
2248 nvfs[i] + nvfs[2], i + 1,
2249 MLX4_MAX_NUM_VF_P_PORT - 1);
2250 return -EINVAL;
2251 }
2252 }
2253
2254
2255 /*
2256 * Check for BARs.
2257 */
2258 if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) &&
2259 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2260 dev_err(&pdev->dev, "Missing DCS, aborting."
2261 "(driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n",
2262 pci_dev_data, pci_resource_flags(pdev, 0));
2263 err = -ENODEV;
2264 goto err_disable_pdev;
2265 }
2266 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
2267 dev_err(&pdev->dev, "Missing UAR, aborting.\n");
2268 err = -ENODEV;
2269 goto err_disable_pdev;
2270 }
2271
2272 err = pci_request_regions(pdev, DRV_NAME);
2273 if (err) {
2274 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
2275 goto err_disable_pdev;
2276 }
2277
2278 pci_set_master(pdev);
2279
2280 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2281 if (err) {
2282 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
2283 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2284 if (err) {
2285 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
2286 goto err_release_regions;
2287 }
2288 }
2289 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
2290 if (err) {
2291 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
2292 "consistent PCI DMA mask.\n");
2293 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2294 if (err) {
2295 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
2296 "aborting.\n");
2297 goto err_release_regions;
2298 }
2299 }
2300
2301 /* Allow large DMA segments, up to the firmware limit of 1 GB */
2302 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
2303
2304 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2305 if (!priv) {
2306 err = -ENOMEM;
2307 goto err_release_regions;
2308 }
2309
2310 dev = &priv->dev;
2311 dev->pdev = pdev;
2312 INIT_LIST_HEAD(&priv->ctx_list);
2313 spin_lock_init(&priv->ctx_lock);
2314
2315 mutex_init(&priv->port_mutex);
2316
2317 INIT_LIST_HEAD(&priv->pgdir_list);
2318 mutex_init(&priv->pgdir_mutex);
2319
2320 INIT_LIST_HEAD(&priv->bf_list);
2321 mutex_init(&priv->bf_mutex);
2322
2323 dev->rev_id = pdev->revision;
2324 dev->numa_node = dev_to_node(&pdev->dev);
2325 /* Detect if this device is a virtual function */
2326 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
2327 /* When acting as pf, we normally skip vfs unless explicitly
2328 * requested to probe them. */
2329 if (total_vfs) {
2330 unsigned vfs_offset = 0;
2331 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) &&
2332 vfs_offset + nvfs[i] < extended_func_num(pdev);
2333 vfs_offset += nvfs[i], i++)
2334 ;
2335 if (i == sizeof(nvfs)/sizeof(nvfs[0])) {
2336 err = -ENODEV;
2337 goto err_free_dev;
2338 }
2339 if ((extended_func_num(pdev) - vfs_offset)
2340 > prb_vf[i]) {
2341 mlx4_warn(dev, "Skipping virtual function:%d\n",
2342 extended_func_num(pdev));
2343 err = -ENODEV;
2344 goto err_free_dev;
2345 }
2346 }
2347 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
2348 dev->flags |= MLX4_FLAG_SLAVE;
2349 } else {
2350 /* We reset the device and enable SRIOV only for physical
2351 * devices. Try to claim ownership on the device;
2352 * if already taken, skip -- do not allow multiple PFs */
2353 err = mlx4_get_ownership(dev);
2354 if (err) {
2355 if (err < 0)
2356 goto err_free_dev;
2357 else {
2358 mlx4_warn(dev, "Multiple PFs not yet supported."
2359 " Skipping PF.\n");
2360 err = -EINVAL;
2361 goto err_free_dev;
2362 }
2363 }
2364
2365 if (total_vfs) {
2366 mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n",
2367 total_vfs);
2368 dev->dev_vfs = kzalloc(
2369 total_vfs * sizeof(*dev->dev_vfs),
2370 GFP_KERNEL);
2371 if (NULL == dev->dev_vfs) {
2372 mlx4_err(dev, "Failed to allocate memory for VFs\n");
2373 err = 0;
2374 } else {
2375 atomic_inc(&pf_loading);
2376 err = pci_enable_sriov(pdev, total_vfs);
2377 atomic_dec(&pf_loading);
2378 if (err) {
2379 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d).\n",
2380 err);
2381 err = 0;
2382 } else {
2383 mlx4_warn(dev, "Running in master mode\n");
2384 dev->flags |= MLX4_FLAG_SRIOV |
2385 MLX4_FLAG_MASTER;
2386 dev->num_vfs = total_vfs;
2387 sriov_initialized = 1;
2388 }
2389 }
2390 }
2391
2392 atomic_set(&priv->opreq_count, 0);
2393 INIT_WORK(&priv->opreq_task, mlx4_opreq_action);
2394
2395 /*
2396 * Now reset the HCA before we touch the PCI capabilities or
2397 * attempt a firmware command, since a boot ROM may have left
2398 * the HCA in an undefined state.
2399 */
2400 err = mlx4_reset(dev);
2401 if (err) {
2402 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
2403 goto err_rel_own;
2404 }
2405 }
2406
2407 slave_start:
2408 err = mlx4_cmd_init(dev);
2409 if (err) {
2410 mlx4_err(dev, "Failed to init command interface, aborting.\n");
2411 goto err_sriov;
2412 }
2413
2414 /* In slave functions, the communication channel must be initialized
2415 * before posting commands. Also, init num_slaves before calling
2416 * mlx4_init_hca */
2417 if (mlx4_is_mfunc(dev)) {
2418 if (mlx4_is_master(dev))
2419 dev->num_slaves = MLX4_MAX_NUM_SLAVES;
2420 else {
2421 dev->num_slaves = 0;
2422 err = mlx4_multi_func_init(dev);
2423 if (err) {
2424 mlx4_err(dev, "Failed to init slave mfunc"
2425 " interface, aborting.\n");
2426 goto err_cmd;
2427 }
2428 }
2429 }
2430
2431 err = mlx4_init_hca(dev);
2432 if (err) {
2433 if (err == -EACCES) {
2434 /* Not primary Physical function
2435 * Running in slave mode */
2436 mlx4_cmd_cleanup(dev);
2437 dev->flags |= MLX4_FLAG_SLAVE;
2438 dev->flags &= ~MLX4_FLAG_MASTER;
2439 goto slave_start;
2440 } else
2441 goto err_mfunc;
2442 }
2443
2444 /* check if the device is functioning at its maximum possible speed.
2445 * No return code for this call, just warn the user in case of PCI
2446 * express device capabilities are under-satisfied by the bus.
2447 */
2448 mlx4_check_pcie_caps(dev);
2449
2450 /* In master functions, the communication channel must be initialized
2451 * after obtaining its address from fw */
2452 if (mlx4_is_master(dev)) {
2453 unsigned sum = 0;
2454 err = mlx4_multi_func_init(dev);
2455 if (err) {
2456 mlx4_err(dev, "Failed to init master mfunc"
2457 "interface, aborting.\n");
2458 goto err_close;
2459 }
2460 if (sriov_initialized) {
2461 int ib_ports = 0;
2462 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2463 ib_ports++;
2464
2465 if (ib_ports &&
2466 (num_vfs_argc > 1 || probe_vfs_argc > 1)) {
2467 mlx4_err(dev,
2468 "Invalid syntax of num_vfs/probe_vfs "
2469 "with IB port. Single port VFs syntax"
2470 " is only supported when all ports "
2471 "are configured as ethernet\n");
2472 goto err_close;
2473 }
2474 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]); i++) {
2475 unsigned j;
2476 for (j = 0; j < nvfs[i]; ++sum, ++j) {
2477 dev->dev_vfs[sum].min_port =
2478 i < 2 ? i + 1 : 1;
2479 dev->dev_vfs[sum].n_ports = i < 2 ? 1 :
2480 dev->caps.num_ports;
2481 }
2482 }
2483 }
2484 }
2485
2486 err = mlx4_alloc_eq_table(dev);
2487 if (err)
2488 goto err_master_mfunc;
2489
2490 priv->msix_ctl.pool_bm = 0;
2491 mutex_init(&priv->msix_ctl.pool_lock);
2492
2493 mlx4_enable_msi_x(dev);
2494 if ((mlx4_is_mfunc(dev)) &&
2495 !(dev->flags & MLX4_FLAG_MSI_X)) {
2496 err = -ENOSYS;
2497 mlx4_err(dev, "INTx is not supported in multi-function mode."
2498 " aborting.\n");
2499 goto err_free_eq;
2500 }
2501
2502 if (!mlx4_is_slave(dev)) {
2503 err = mlx4_init_steering(dev);
2504 if (err)
2505 goto err_free_eq;
2506 }
2507
2508 err = mlx4_setup_hca(dev);
2509 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
2510 !mlx4_is_mfunc(dev)) {
2511 dev->flags &= ~MLX4_FLAG_MSI_X;
2512 dev->caps.num_comp_vectors = 1;
2513 dev->caps.comp_pool = 0;
2514 pci_disable_msix(pdev);
2515 err = mlx4_setup_hca(dev);
2516 }
2517
2518 if (err)
2519 goto err_steer;
2520
2521 mlx4_init_quotas(dev);
2522
2523 for (port = 1; port <= dev->caps.num_ports; port++) {
2524 err = mlx4_init_port_info(dev, port);
2525 if (err)
2526 goto err_port;
2527 }
2528
2529 err = mlx4_register_device(dev);
2530 if (err)
2531 goto err_port;
2532
2533 mlx4_request_modules(dev);
2534
2535 mlx4_sense_init(dev);
2536 mlx4_start_sense(dev);
2537
2538 priv->pci_dev_data = pci_dev_data;
2539 pci_set_drvdata(pdev, dev);
2540
2541 return 0;
2542
2543 err_port:
2544 for (--port; port >= 1; --port)
2545 mlx4_cleanup_port_info(&priv->port[port]);
2546
2547 mlx4_cleanup_counters_table(dev);
2548 mlx4_cleanup_qp_table(dev);
2549 mlx4_cleanup_srq_table(dev);
2550 mlx4_cleanup_cq_table(dev);
2551 mlx4_cmd_use_polling(dev);
2552 mlx4_cleanup_eq_table(dev);
2553 mlx4_cleanup_mcg_table(dev);
2554 mlx4_cleanup_mr_table(dev);
2555 mlx4_cleanup_xrcd_table(dev);
2556 mlx4_cleanup_pd_table(dev);
2557 mlx4_cleanup_uar_table(dev);
2558
2559 err_steer:
2560 if (!mlx4_is_slave(dev))
2561 mlx4_clear_steering(dev);
2562
2563 err_free_eq:
2564 mlx4_free_eq_table(dev);
2565
2566 err_master_mfunc:
2567 if (mlx4_is_master(dev))
2568 mlx4_multi_func_cleanup(dev);
2569
2570 err_close:
2571 if (dev->flags & MLX4_FLAG_MSI_X)
2572 pci_disable_msix(pdev);
2573
2574 mlx4_close_hca(dev);
2575
2576 err_mfunc:
2577 if (mlx4_is_slave(dev))
2578 mlx4_multi_func_cleanup(dev);
2579
2580 err_cmd:
2581 mlx4_cmd_cleanup(dev);
2582
2583 err_sriov:
2584 if (dev->flags & MLX4_FLAG_SRIOV)
2585 pci_disable_sriov(pdev);
2586
2587 err_rel_own:
2588 if (!mlx4_is_slave(dev))
2589 mlx4_free_ownership(dev);
2590
2591 kfree(priv->dev.dev_vfs);
2592
2593 err_free_dev:
2594 kfree(priv);
2595
2596 err_release_regions:
2597 pci_release_regions(pdev);
2598
2599 err_disable_pdev:
2600 pci_disable_device(pdev);
2601 pci_set_drvdata(pdev, NULL);
2602 return err;
2603 }
2604
2605 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
2606 {
2607 printk_once(KERN_INFO "%s", mlx4_version);
2608
2609 return __mlx4_init_one(pdev, id->driver_data);
2610 }
2611
2612 static void mlx4_remove_one(struct pci_dev *pdev)
2613 {
2614 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2615 struct mlx4_priv *priv = mlx4_priv(dev);
2616 int p;
2617
2618 if (dev) {
2619 /* in SRIOV it is not allowed to unload the pf's
2620 * driver while there are alive vf's */
2621 if (mlx4_is_master(dev)) {
2622 if (mlx4_how_many_lives_vf(dev))
2623 printk(KERN_ERR "Removing PF when there are assigned VF's !!!\n");
2624 }
2625 mlx4_stop_sense(dev);
2626 mlx4_unregister_device(dev);
2627
2628 for (p = 1; p <= dev->caps.num_ports; p++) {
2629 mlx4_cleanup_port_info(&priv->port[p]);
2630 mlx4_CLOSE_PORT(dev, p);
2631 }
2632
2633 if (mlx4_is_master(dev))
2634 mlx4_free_resource_tracker(dev,
2635 RES_TR_FREE_SLAVES_ONLY);
2636
2637 mlx4_cleanup_counters_table(dev);
2638 mlx4_cleanup_qp_table(dev);
2639 mlx4_cleanup_srq_table(dev);
2640 mlx4_cleanup_cq_table(dev);
2641 mlx4_cmd_use_polling(dev);
2642 mlx4_cleanup_eq_table(dev);
2643 mlx4_cleanup_mcg_table(dev);
2644 mlx4_cleanup_mr_table(dev);
2645 mlx4_cleanup_xrcd_table(dev);
2646 mlx4_cleanup_pd_table(dev);
2647
2648 if (mlx4_is_master(dev))
2649 mlx4_free_resource_tracker(dev,
2650 RES_TR_FREE_STRUCTS_ONLY);
2651
2652 iounmap(priv->kar);
2653 mlx4_uar_free(dev, &priv->driver_uar);
2654 mlx4_cleanup_uar_table(dev);
2655 if (!mlx4_is_slave(dev))
2656 mlx4_clear_steering(dev);
2657 mlx4_free_eq_table(dev);
2658 if (mlx4_is_master(dev))
2659 mlx4_multi_func_cleanup(dev);
2660 mlx4_close_hca(dev);
2661 if (mlx4_is_slave(dev))
2662 mlx4_multi_func_cleanup(dev);
2663 mlx4_cmd_cleanup(dev);
2664
2665 if (dev->flags & MLX4_FLAG_MSI_X)
2666 pci_disable_msix(pdev);
2667 if (dev->flags & MLX4_FLAG_SRIOV) {
2668 mlx4_warn(dev, "Disabling SR-IOV\n");
2669 pci_disable_sriov(pdev);
2670 }
2671
2672 if (!mlx4_is_slave(dev))
2673 mlx4_free_ownership(dev);
2674
2675 kfree(dev->caps.qp0_tunnel);
2676 kfree(dev->caps.qp0_proxy);
2677 kfree(dev->caps.qp1_tunnel);
2678 kfree(dev->caps.qp1_proxy);
2679 kfree(dev->dev_vfs);
2680
2681 kfree(priv);
2682 pci_release_regions(pdev);
2683 pci_disable_device(pdev);
2684 pci_set_drvdata(pdev, NULL);
2685 }
2686 }
2687
2688 int mlx4_restart_one(struct pci_dev *pdev)
2689 {
2690 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2691 struct mlx4_priv *priv = mlx4_priv(dev);
2692 int pci_dev_data;
2693
2694 pci_dev_data = priv->pci_dev_data;
2695 mlx4_remove_one(pdev);
2696 return __mlx4_init_one(pdev, pci_dev_data);
2697 }
2698
2699 static DEFINE_PCI_DEVICE_TABLE(mlx4_pci_table) = {
2700 /* MT25408 "Hermon" SDR */
2701 { PCI_VDEVICE(MELLANOX, 0x6340), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2702 /* MT25408 "Hermon" DDR */
2703 { PCI_VDEVICE(MELLANOX, 0x634a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2704 /* MT25408 "Hermon" QDR */
2705 { PCI_VDEVICE(MELLANOX, 0x6354), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2706 /* MT25408 "Hermon" DDR PCIe gen2 */
2707 { PCI_VDEVICE(MELLANOX, 0x6732), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2708 /* MT25408 "Hermon" QDR PCIe gen2 */
2709 { PCI_VDEVICE(MELLANOX, 0x673c), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2710 /* MT25408 "Hermon" EN 10GigE */
2711 { PCI_VDEVICE(MELLANOX, 0x6368), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2712 /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
2713 { PCI_VDEVICE(MELLANOX, 0x6750), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2714 /* MT25458 ConnectX EN 10GBASE-T 10GigE */
2715 { PCI_VDEVICE(MELLANOX, 0x6372), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2716 /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
2717 { PCI_VDEVICE(MELLANOX, 0x675a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2718 /* MT26468 ConnectX EN 10GigE PCIe gen2*/
2719 { PCI_VDEVICE(MELLANOX, 0x6764), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2720 /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */
2721 { PCI_VDEVICE(MELLANOX, 0x6746), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2722 /* MT26478 ConnectX2 40GigE PCIe gen2 */
2723 { PCI_VDEVICE(MELLANOX, 0x676e), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2724 /* MT25400 Family [ConnectX-2 Virtual Function] */
2725 { PCI_VDEVICE(MELLANOX, 0x1002), MLX4_PCI_DEV_IS_VF },
2726 /* MT27500 Family [ConnectX-3] */
2727 { PCI_VDEVICE(MELLANOX, 0x1003), 0 },
2728 /* MT27500 Family [ConnectX-3 Virtual Function] */
2729 { PCI_VDEVICE(MELLANOX, 0x1004), MLX4_PCI_DEV_IS_VF },
2730 { PCI_VDEVICE(MELLANOX, 0x1005), 0 }, /* MT27510 Family */
2731 { PCI_VDEVICE(MELLANOX, 0x1006), 0 }, /* MT27511 Family */
2732 { PCI_VDEVICE(MELLANOX, 0x1007), 0 }, /* MT27520 Family */
2733 { PCI_VDEVICE(MELLANOX, 0x1008), 0 }, /* MT27521 Family */
2734 { PCI_VDEVICE(MELLANOX, 0x1009), 0 }, /* MT27530 Family */
2735 { PCI_VDEVICE(MELLANOX, 0x100a), 0 }, /* MT27531 Family */
2736 { PCI_VDEVICE(MELLANOX, 0x100b), 0 }, /* MT27540 Family */
2737 { PCI_VDEVICE(MELLANOX, 0x100c), 0 }, /* MT27541 Family */
2738 { PCI_VDEVICE(MELLANOX, 0x100d), 0 }, /* MT27550 Family */
2739 { PCI_VDEVICE(MELLANOX, 0x100e), 0 }, /* MT27551 Family */
2740 { PCI_VDEVICE(MELLANOX, 0x100f), 0 }, /* MT27560 Family */
2741 { PCI_VDEVICE(MELLANOX, 0x1010), 0 }, /* MT27561 Family */
2742 { 0, }
2743 };
2744
2745 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
2746
2747 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
2748 pci_channel_state_t state)
2749 {
2750 mlx4_remove_one(pdev);
2751
2752 return state == pci_channel_io_perm_failure ?
2753 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
2754 }
2755
2756 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
2757 {
2758 const struct pci_device_id *id;
2759 int ret;
2760
2761 id = pci_match_id(mlx4_pci_table, pdev);
2762 ret = __mlx4_init_one(pdev, id->driver_data);
2763
2764 return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
2765 }
2766
2767 static const struct pci_error_handlers mlx4_err_handler = {
2768 .error_detected = mlx4_pci_err_detected,
2769 .slot_reset = mlx4_pci_slot_reset,
2770 };
2771
2772 static struct pci_driver mlx4_driver = {
2773 .name = DRV_NAME,
2774 .id_table = mlx4_pci_table,
2775 .probe = mlx4_init_one,
2776 .shutdown = mlx4_remove_one,
2777 .remove = mlx4_remove_one,
2778 .err_handler = &mlx4_err_handler,
2779 };
2780
2781 static int __init mlx4_verify_params(void)
2782 {
2783 if ((log_num_mac < 0) || (log_num_mac > 7)) {
2784 pr_warning("mlx4_core: bad num_mac: %d\n", log_num_mac);
2785 return -1;
2786 }
2787
2788 if (log_num_vlan != 0)
2789 pr_warning("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
2790 MLX4_LOG_NUM_VLANS);
2791
2792 if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
2793 pr_warning("mlx4_core: bad log_mtts_per_seg: %d\n", log_mtts_per_seg);
2794 return -1;
2795 }
2796
2797 /* Check if module param for ports type has legal combination */
2798 if (port_type_array[0] == false && port_type_array[1] == true) {
2799 printk(KERN_WARNING "Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
2800 port_type_array[0] = true;
2801 }
2802
2803 if (mlx4_log_num_mgm_entry_size != -1 &&
2804 (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE ||
2805 mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE)) {
2806 pr_warning("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not "
2807 "in legal range (-1 or %d..%d)\n",
2808 mlx4_log_num_mgm_entry_size,
2809 MLX4_MIN_MGM_LOG_ENTRY_SIZE,
2810 MLX4_MAX_MGM_LOG_ENTRY_SIZE);
2811 return -1;
2812 }
2813
2814 return 0;
2815 }
2816
2817 static int __init mlx4_init(void)
2818 {
2819 int ret;
2820
2821 if (mlx4_verify_params())
2822 return -EINVAL;
2823
2824 mlx4_catas_init();
2825
2826 mlx4_wq = create_singlethread_workqueue("mlx4");
2827 if (!mlx4_wq)
2828 return -ENOMEM;
2829
2830 ret = pci_register_driver(&mlx4_driver);
2831 if (ret < 0)
2832 destroy_workqueue(mlx4_wq);
2833 return ret < 0 ? ret : 0;
2834 }
2835
2836 static void __exit mlx4_cleanup(void)
2837 {
2838 pci_unregister_driver(&mlx4_driver);
2839 destroy_workqueue(mlx4_wq);
2840 }
2841
2842 module_init(mlx4_init);
2843 module_exit(mlx4_cleanup);
Linux kernel - Deliverables
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