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[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx4 / main.c
1 /*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
5 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36 #include <linux/module.h>
37 #include <linux/init.h>
38 #include <linux/errno.h>
39 #include <linux/pci.h>
40 #include <linux/dma-mapping.h>
41 #include <linux/slab.h>
42 #include <linux/io-mapping.h>
43 #include <linux/delay.h>
44 #include <linux/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 PF_CONTEXT_BEHAVIOUR_MASK MLX4_FUNC_CAP_64B_EQE_CQE
108
109 static char mlx4_version[] =
110 DRV_NAME ": Mellanox ConnectX core driver v"
111 DRV_VERSION " (" DRV_RELDATE ")\n";
112
113 static struct mlx4_profile default_profile = {
114 .num_qp = 1 << 18,
115 .num_srq = 1 << 16,
116 .rdmarc_per_qp = 1 << 4,
117 .num_cq = 1 << 16,
118 .num_mcg = 1 << 13,
119 .num_mpt = 1 << 19,
120 .num_mtt = 1 << 20, /* It is really num mtt segements */
121 };
122
123 static int log_num_mac = 7;
124 module_param_named(log_num_mac, log_num_mac, int, 0444);
125 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
126
127 static int log_num_vlan;
128 module_param_named(log_num_vlan, log_num_vlan, int, 0444);
129 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
130 /* Log2 max number of VLANs per ETH port (0-7) */
131 #define MLX4_LOG_NUM_VLANS 7
132
133 static bool use_prio;
134 module_param_named(use_prio, use_prio, bool, 0444);
135 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports "
136 "(0/1, default 0)");
137
138 int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
139 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
140 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-7)");
141
142 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE};
143 static int arr_argc = 2;
144 module_param_array(port_type_array, int, &arr_argc, 0444);
145 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default "
146 "1 for IB, 2 for Ethernet");
147
148 struct mlx4_port_config {
149 struct list_head list;
150 enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
151 struct pci_dev *pdev;
152 };
153
154 static atomic_t pf_loading = ATOMIC_INIT(0);
155
156 int mlx4_check_port_params(struct mlx4_dev *dev,
157 enum mlx4_port_type *port_type)
158 {
159 int i;
160
161 for (i = 0; i < dev->caps.num_ports - 1; i++) {
162 if (port_type[i] != port_type[i + 1]) {
163 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
164 mlx4_err(dev, "Only same port types supported on this HCA, aborting\n");
165 return -EINVAL;
166 }
167 }
168 }
169
170 for (i = 0; i < dev->caps.num_ports; i++) {
171 if (!(port_type[i] & dev->caps.supported_type[i+1])) {
172 mlx4_err(dev, "Requested port type for port %d is not supported on this HCA\n",
173 i + 1);
174 return -EINVAL;
175 }
176 }
177 return 0;
178 }
179
180 static void mlx4_set_port_mask(struct mlx4_dev *dev)
181 {
182 int i;
183
184 for (i = 1; i <= dev->caps.num_ports; ++i)
185 dev->caps.port_mask[i] = dev->caps.port_type[i];
186 }
187
188 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
189 {
190 int err;
191 int i;
192
193 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
194 if (err) {
195 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
196 return err;
197 }
198
199 if (dev_cap->min_page_sz > PAGE_SIZE) {
200 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
201 dev_cap->min_page_sz, PAGE_SIZE);
202 return -ENODEV;
203 }
204 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
205 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
206 dev_cap->num_ports, MLX4_MAX_PORTS);
207 return -ENODEV;
208 }
209
210 if (dev_cap->uar_size > pci_resource_len(dev->pdev, 2)) {
211 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
212 dev_cap->uar_size,
213 (unsigned long long) pci_resource_len(dev->pdev, 2));
214 return -ENODEV;
215 }
216
217 dev->caps.num_ports = dev_cap->num_ports;
218 dev->phys_caps.num_phys_eqs = MLX4_MAX_EQ_NUM;
219 for (i = 1; i <= dev->caps.num_ports; ++i) {
220 dev->caps.vl_cap[i] = dev_cap->max_vl[i];
221 dev->caps.ib_mtu_cap[i] = dev_cap->ib_mtu[i];
222 dev->phys_caps.gid_phys_table_len[i] = dev_cap->max_gids[i];
223 dev->phys_caps.pkey_phys_table_len[i] = dev_cap->max_pkeys[i];
224 /* set gid and pkey table operating lengths by default
225 * to non-sriov values */
226 dev->caps.gid_table_len[i] = dev_cap->max_gids[i];
227 dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
228 dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
229 dev->caps.eth_mtu_cap[i] = dev_cap->eth_mtu[i];
230 dev->caps.def_mac[i] = dev_cap->def_mac[i];
231 dev->caps.supported_type[i] = dev_cap->supported_port_types[i];
232 dev->caps.suggested_type[i] = dev_cap->suggested_type[i];
233 dev->caps.default_sense[i] = dev_cap->default_sense[i];
234 dev->caps.trans_type[i] = dev_cap->trans_type[i];
235 dev->caps.vendor_oui[i] = dev_cap->vendor_oui[i];
236 dev->caps.wavelength[i] = dev_cap->wavelength[i];
237 dev->caps.trans_code[i] = dev_cap->trans_code[i];
238 }
239
240 dev->caps.uar_page_size = PAGE_SIZE;
241 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
242 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
243 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
244 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
245 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
246 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
247 dev->caps.max_wqes = dev_cap->max_qp_sz;
248 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
249 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
250 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
251 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
252 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
253 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
254 /*
255 * Subtract 1 from the limit because we need to allocate a
256 * spare CQE so the HCA HW can tell the difference between an
257 * empty CQ and a full CQ.
258 */
259 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
260 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
261 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
262 dev->caps.reserved_mtts = dev_cap->reserved_mtts;
263 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
264
265 /* The first 128 UARs are used for EQ doorbells */
266 dev->caps.reserved_uars = max_t(int, 128, dev_cap->reserved_uars);
267 dev->caps.reserved_pds = dev_cap->reserved_pds;
268 dev->caps.reserved_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
269 dev_cap->reserved_xrcds : 0;
270 dev->caps.max_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
271 dev_cap->max_xrcds : 0;
272 dev->caps.mtt_entry_sz = dev_cap->mtt_entry_sz;
273
274 dev->caps.max_msg_sz = dev_cap->max_msg_sz;
275 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
276 dev->caps.flags = dev_cap->flags;
277 dev->caps.flags2 = dev_cap->flags2;
278 dev->caps.bmme_flags = dev_cap->bmme_flags;
279 dev->caps.reserved_lkey = dev_cap->reserved_lkey;
280 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
281 dev->caps.max_gso_sz = dev_cap->max_gso_sz;
282 dev->caps.max_rss_tbl_sz = dev_cap->max_rss_tbl_sz;
283
284 /* Sense port always allowed on supported devices for ConnectX-1 and -2 */
285 if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT)
286 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
287 /* Don't do sense port on multifunction devices (for now at least) */
288 if (mlx4_is_mfunc(dev))
289 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
290
291 dev->caps.log_num_macs = log_num_mac;
292 dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
293 dev->caps.log_num_prios = use_prio ? 3 : 0;
294
295 for (i = 1; i <= dev->caps.num_ports; ++i) {
296 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
297 if (dev->caps.supported_type[i]) {
298 /* if only ETH is supported - assign ETH */
299 if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH)
300 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
301 /* if only IB is supported, assign IB */
302 else if (dev->caps.supported_type[i] ==
303 MLX4_PORT_TYPE_IB)
304 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
305 else {
306 /* if IB and ETH are supported, we set the port
307 * type according to user selection of port type;
308 * if user selected none, take the FW hint */
309 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE)
310 dev->caps.port_type[i] = dev->caps.suggested_type[i] ?
311 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB;
312 else
313 dev->caps.port_type[i] = port_type_array[i - 1];
314 }
315 }
316 /*
317 * Link sensing is allowed on the port if 3 conditions are true:
318 * 1. Both protocols are supported on the port.
319 * 2. Different types are supported on the port
320 * 3. FW declared that it supports link sensing
321 */
322 mlx4_priv(dev)->sense.sense_allowed[i] =
323 ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) &&
324 (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
325 (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT));
326
327 /*
328 * If "default_sense" bit is set, we move the port to "AUTO" mode
329 * and perform sense_port FW command to try and set the correct
330 * port type from beginning
331 */
332 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) {
333 enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE;
334 dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO;
335 mlx4_SENSE_PORT(dev, i, &sensed_port);
336 if (sensed_port != MLX4_PORT_TYPE_NONE)
337 dev->caps.port_type[i] = sensed_port;
338 } else {
339 dev->caps.possible_type[i] = dev->caps.port_type[i];
340 }
341
342 if (dev->caps.log_num_macs > dev_cap->log_max_macs[i]) {
343 dev->caps.log_num_macs = dev_cap->log_max_macs[i];
344 mlx4_warn(dev, "Requested number of MACs is too much for port %d, reducing to %d\n",
345 i, 1 << dev->caps.log_num_macs);
346 }
347 if (dev->caps.log_num_vlans > dev_cap->log_max_vlans[i]) {
348 dev->caps.log_num_vlans = dev_cap->log_max_vlans[i];
349 mlx4_warn(dev, "Requested number of VLANs is too much for port %d, reducing to %d\n",
350 i, 1 << dev->caps.log_num_vlans);
351 }
352 }
353
354 dev->caps.max_counters = 1 << ilog2(dev_cap->max_counters);
355
356 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
357 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
358 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
359 (1 << dev->caps.log_num_macs) *
360 (1 << dev->caps.log_num_vlans) *
361 (1 << dev->caps.log_num_prios) *
362 dev->caps.num_ports;
363 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
364
365 dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
366 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
367 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
368 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
369
370 dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
371
372 if (!enable_64b_cqe_eqe && !mlx4_is_slave(dev)) {
373 if (dev_cap->flags &
374 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) {
375 mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n");
376 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
377 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
378 }
379 }
380
381 if ((dev->caps.flags &
382 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) &&
383 mlx4_is_master(dev))
384 dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE;
385
386 return 0;
387 }
388
389 static int mlx4_get_pcie_dev_link_caps(struct mlx4_dev *dev,
390 enum pci_bus_speed *speed,
391 enum pcie_link_width *width)
392 {
393 u32 lnkcap1, lnkcap2;
394 int err1, err2;
395
396 #define PCIE_MLW_CAP_SHIFT 4 /* start of MLW mask in link capabilities */
397
398 *speed = PCI_SPEED_UNKNOWN;
399 *width = PCIE_LNK_WIDTH_UNKNOWN;
400
401 err1 = pcie_capability_read_dword(dev->pdev, PCI_EXP_LNKCAP, &lnkcap1);
402 err2 = pcie_capability_read_dword(dev->pdev, PCI_EXP_LNKCAP2, &lnkcap2);
403 if (!err2 && lnkcap2) { /* PCIe r3.0-compliant */
404 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
405 *speed = PCIE_SPEED_8_0GT;
406 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
407 *speed = PCIE_SPEED_5_0GT;
408 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
409 *speed = PCIE_SPEED_2_5GT;
410 }
411 if (!err1) {
412 *width = (lnkcap1 & PCI_EXP_LNKCAP_MLW) >> PCIE_MLW_CAP_SHIFT;
413 if (!lnkcap2) { /* pre-r3.0 */
414 if (lnkcap1 & PCI_EXP_LNKCAP_SLS_5_0GB)
415 *speed = PCIE_SPEED_5_0GT;
416 else if (lnkcap1 & PCI_EXP_LNKCAP_SLS_2_5GB)
417 *speed = PCIE_SPEED_2_5GT;
418 }
419 }
420
421 if (*speed == PCI_SPEED_UNKNOWN || *width == PCIE_LNK_WIDTH_UNKNOWN) {
422 return err1 ? err1 :
423 err2 ? err2 : -EINVAL;
424 }
425 return 0;
426 }
427
428 static void mlx4_check_pcie_caps(struct mlx4_dev *dev)
429 {
430 enum pcie_link_width width, width_cap;
431 enum pci_bus_speed speed, speed_cap;
432 int err;
433
434 #define PCIE_SPEED_STR(speed) \
435 (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" : \
436 speed == PCIE_SPEED_5_0GT ? "5.0GT/s" : \
437 speed == PCIE_SPEED_2_5GT ? "2.5GT/s" : \
438 "Unknown")
439
440 err = mlx4_get_pcie_dev_link_caps(dev, &speed_cap, &width_cap);
441 if (err) {
442 mlx4_warn(dev,
443 "Unable to determine PCIe device BW capabilities\n");
444 return;
445 }
446
447 err = pcie_get_minimum_link(dev->pdev, &speed, &width);
448 if (err || speed == PCI_SPEED_UNKNOWN ||
449 width == PCIE_LNK_WIDTH_UNKNOWN) {
450 mlx4_warn(dev,
451 "Unable to determine PCI device chain minimum BW\n");
452 return;
453 }
454
455 if (width != width_cap || speed != speed_cap)
456 mlx4_warn(dev,
457 "PCIe BW is different than device's capability\n");
458
459 mlx4_info(dev, "PCIe link speed is %s, device supports %s\n",
460 PCIE_SPEED_STR(speed), PCIE_SPEED_STR(speed_cap));
461 mlx4_info(dev, "PCIe link width is x%d, device supports x%d\n",
462 width, width_cap);
463 return;
464 }
465
466 /*The function checks if there are live vf, return the num of them*/
467 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
468 {
469 struct mlx4_priv *priv = mlx4_priv(dev);
470 struct mlx4_slave_state *s_state;
471 int i;
472 int ret = 0;
473
474 for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
475 s_state = &priv->mfunc.master.slave_state[i];
476 if (s_state->active && s_state->last_cmd !=
477 MLX4_COMM_CMD_RESET) {
478 mlx4_warn(dev, "%s: slave: %d is still active\n",
479 __func__, i);
480 ret++;
481 }
482 }
483 return ret;
484 }
485
486 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
487 {
488 u32 qk = MLX4_RESERVED_QKEY_BASE;
489
490 if (qpn >= dev->phys_caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
491 qpn < dev->phys_caps.base_proxy_sqpn)
492 return -EINVAL;
493
494 if (qpn >= dev->phys_caps.base_tunnel_sqpn)
495 /* tunnel qp */
496 qk += qpn - dev->phys_caps.base_tunnel_sqpn;
497 else
498 qk += qpn - dev->phys_caps.base_proxy_sqpn;
499 *qkey = qk;
500 return 0;
501 }
502 EXPORT_SYMBOL(mlx4_get_parav_qkey);
503
504 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val)
505 {
506 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
507
508 if (!mlx4_is_master(dev))
509 return;
510
511 priv->virt2phys_pkey[slave][port - 1][i] = val;
512 }
513 EXPORT_SYMBOL(mlx4_sync_pkey_table);
514
515 void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid)
516 {
517 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
518
519 if (!mlx4_is_master(dev))
520 return;
521
522 priv->slave_node_guids[slave] = guid;
523 }
524 EXPORT_SYMBOL(mlx4_put_slave_node_guid);
525
526 __be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave)
527 {
528 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
529
530 if (!mlx4_is_master(dev))
531 return 0;
532
533 return priv->slave_node_guids[slave];
534 }
535 EXPORT_SYMBOL(mlx4_get_slave_node_guid);
536
537 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
538 {
539 struct mlx4_priv *priv = mlx4_priv(dev);
540 struct mlx4_slave_state *s_slave;
541
542 if (!mlx4_is_master(dev))
543 return 0;
544
545 s_slave = &priv->mfunc.master.slave_state[slave];
546 return !!s_slave->active;
547 }
548 EXPORT_SYMBOL(mlx4_is_slave_active);
549
550 static void slave_adjust_steering_mode(struct mlx4_dev *dev,
551 struct mlx4_dev_cap *dev_cap,
552 struct mlx4_init_hca_param *hca_param)
553 {
554 dev->caps.steering_mode = hca_param->steering_mode;
555 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
556 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
557 dev->caps.fs_log_max_ucast_qp_range_size =
558 dev_cap->fs_log_max_ucast_qp_range_size;
559 } else
560 dev->caps.num_qp_per_mgm =
561 4 * ((1 << hca_param->log_mc_entry_sz)/16 - 2);
562
563 mlx4_dbg(dev, "Steering mode is: %s\n",
564 mlx4_steering_mode_str(dev->caps.steering_mode));
565 }
566
567 static int mlx4_slave_cap(struct mlx4_dev *dev)
568 {
569 int err;
570 u32 page_size;
571 struct mlx4_dev_cap dev_cap;
572 struct mlx4_func_cap func_cap;
573 struct mlx4_init_hca_param hca_param;
574 int i;
575
576 memset(&hca_param, 0, sizeof(hca_param));
577 err = mlx4_QUERY_HCA(dev, &hca_param);
578 if (err) {
579 mlx4_err(dev, "QUERY_HCA command failed, aborting\n");
580 return err;
581 }
582
583 /* fail if the hca has an unknown global capability
584 * at this time global_caps should be always zeroed
585 */
586 if (hca_param.global_caps) {
587 mlx4_err(dev, "Unknown hca global capabilities\n");
588 return -ENOSYS;
589 }
590
591 mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
592
593 dev->caps.hca_core_clock = hca_param.hca_core_clock;
594
595 memset(&dev_cap, 0, sizeof(dev_cap));
596 dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
597 err = mlx4_dev_cap(dev, &dev_cap);
598 if (err) {
599 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
600 return err;
601 }
602
603 err = mlx4_QUERY_FW(dev);
604 if (err)
605 mlx4_err(dev, "QUERY_FW command failed: could not get FW version\n");
606
607 page_size = ~dev->caps.page_size_cap + 1;
608 mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
609 if (page_size > PAGE_SIZE) {
610 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
611 page_size, PAGE_SIZE);
612 return -ENODEV;
613 }
614
615 /* slave gets uar page size from QUERY_HCA fw command */
616 dev->caps.uar_page_size = 1 << (hca_param.uar_page_sz + 12);
617
618 /* TODO: relax this assumption */
619 if (dev->caps.uar_page_size != PAGE_SIZE) {
620 mlx4_err(dev, "UAR size:%d != kernel PAGE_SIZE of %ld\n",
621 dev->caps.uar_page_size, PAGE_SIZE);
622 return -ENODEV;
623 }
624
625 memset(&func_cap, 0, sizeof(func_cap));
626 err = mlx4_QUERY_FUNC_CAP(dev, 0, &func_cap);
627 if (err) {
628 mlx4_err(dev, "QUERY_FUNC_CAP general command failed, aborting (%d)\n",
629 err);
630 return err;
631 }
632
633 if ((func_cap.pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
634 PF_CONTEXT_BEHAVIOUR_MASK) {
635 mlx4_err(dev, "Unknown pf context behaviour\n");
636 return -ENOSYS;
637 }
638
639 dev->caps.num_ports = func_cap.num_ports;
640 dev->quotas.qp = func_cap.qp_quota;
641 dev->quotas.srq = func_cap.srq_quota;
642 dev->quotas.cq = func_cap.cq_quota;
643 dev->quotas.mpt = func_cap.mpt_quota;
644 dev->quotas.mtt = func_cap.mtt_quota;
645 dev->caps.num_qps = 1 << hca_param.log_num_qps;
646 dev->caps.num_srqs = 1 << hca_param.log_num_srqs;
647 dev->caps.num_cqs = 1 << hca_param.log_num_cqs;
648 dev->caps.num_mpts = 1 << hca_param.log_mpt_sz;
649 dev->caps.num_eqs = func_cap.max_eq;
650 dev->caps.reserved_eqs = func_cap.reserved_eq;
651 dev->caps.num_pds = MLX4_NUM_PDS;
652 dev->caps.num_mgms = 0;
653 dev->caps.num_amgms = 0;
654
655 if (dev->caps.num_ports > MLX4_MAX_PORTS) {
656 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
657 dev->caps.num_ports, MLX4_MAX_PORTS);
658 return -ENODEV;
659 }
660
661 dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
662 dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
663 dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
664 dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
665
666 if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy ||
667 !dev->caps.qp1_tunnel || !dev->caps.qp1_proxy) {
668 err = -ENOMEM;
669 goto err_mem;
670 }
671
672 for (i = 1; i <= dev->caps.num_ports; ++i) {
673 err = mlx4_QUERY_FUNC_CAP(dev, (u32) i, &func_cap);
674 if (err) {
675 mlx4_err(dev, "QUERY_FUNC_CAP port command failed for port %d, aborting (%d)\n",
676 i, err);
677 goto err_mem;
678 }
679 dev->caps.qp0_tunnel[i - 1] = func_cap.qp0_tunnel_qpn;
680 dev->caps.qp0_proxy[i - 1] = func_cap.qp0_proxy_qpn;
681 dev->caps.qp1_tunnel[i - 1] = func_cap.qp1_tunnel_qpn;
682 dev->caps.qp1_proxy[i - 1] = func_cap.qp1_proxy_qpn;
683 dev->caps.port_mask[i] = dev->caps.port_type[i];
684 dev->caps.phys_port_id[i] = func_cap.phys_port_id;
685 if (mlx4_get_slave_pkey_gid_tbl_len(dev, i,
686 &dev->caps.gid_table_len[i],
687 &dev->caps.pkey_table_len[i]))
688 goto err_mem;
689 }
690
691 if (dev->caps.uar_page_size * (dev->caps.num_uars -
692 dev->caps.reserved_uars) >
693 pci_resource_len(dev->pdev, 2)) {
694 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
695 dev->caps.uar_page_size * dev->caps.num_uars,
696 (unsigned long long) pci_resource_len(dev->pdev, 2));
697 goto err_mem;
698 }
699
700 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) {
701 dev->caps.eqe_size = 64;
702 dev->caps.eqe_factor = 1;
703 } else {
704 dev->caps.eqe_size = 32;
705 dev->caps.eqe_factor = 0;
706 }
707
708 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) {
709 dev->caps.cqe_size = 64;
710 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_64B_CQE;
711 } else {
712 dev->caps.cqe_size = 32;
713 }
714
715 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
716 mlx4_warn(dev, "Timestamping is not supported in slave mode\n");
717
718 slave_adjust_steering_mode(dev, &dev_cap, &hca_param);
719
720 return 0;
721
722 err_mem:
723 kfree(dev->caps.qp0_tunnel);
724 kfree(dev->caps.qp0_proxy);
725 kfree(dev->caps.qp1_tunnel);
726 kfree(dev->caps.qp1_proxy);
727 dev->caps.qp0_tunnel = dev->caps.qp0_proxy =
728 dev->caps.qp1_tunnel = dev->caps.qp1_proxy = NULL;
729
730 return err;
731 }
732
733 static void mlx4_request_modules(struct mlx4_dev *dev)
734 {
735 int port;
736 int has_ib_port = false;
737 int has_eth_port = false;
738 #define EN_DRV_NAME "mlx4_en"
739 #define IB_DRV_NAME "mlx4_ib"
740
741 for (port = 1; port <= dev->caps.num_ports; port++) {
742 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
743 has_ib_port = true;
744 else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
745 has_eth_port = true;
746 }
747
748 if (has_eth_port)
749 request_module_nowait(EN_DRV_NAME);
750 if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
751 request_module_nowait(IB_DRV_NAME);
752 }
753
754 /*
755 * Change the port configuration of the device.
756 * Every user of this function must hold the port mutex.
757 */
758 int mlx4_change_port_types(struct mlx4_dev *dev,
759 enum mlx4_port_type *port_types)
760 {
761 int err = 0;
762 int change = 0;
763 int port;
764
765 for (port = 0; port < dev->caps.num_ports; port++) {
766 /* Change the port type only if the new type is different
767 * from the current, and not set to Auto */
768 if (port_types[port] != dev->caps.port_type[port + 1])
769 change = 1;
770 }
771 if (change) {
772 mlx4_unregister_device(dev);
773 for (port = 1; port <= dev->caps.num_ports; port++) {
774 mlx4_CLOSE_PORT(dev, port);
775 dev->caps.port_type[port] = port_types[port - 1];
776 err = mlx4_SET_PORT(dev, port, -1);
777 if (err) {
778 mlx4_err(dev, "Failed to set port %d, aborting\n",
779 port);
780 goto out;
781 }
782 }
783 mlx4_set_port_mask(dev);
784 err = mlx4_register_device(dev);
785 if (err) {
786 mlx4_err(dev, "Failed to register device\n");
787 goto out;
788 }
789 mlx4_request_modules(dev);
790 }
791
792 out:
793 return err;
794 }
795
796 static ssize_t show_port_type(struct device *dev,
797 struct device_attribute *attr,
798 char *buf)
799 {
800 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
801 port_attr);
802 struct mlx4_dev *mdev = info->dev;
803 char type[8];
804
805 sprintf(type, "%s",
806 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
807 "ib" : "eth");
808 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
809 sprintf(buf, "auto (%s)\n", type);
810 else
811 sprintf(buf, "%s\n", type);
812
813 return strlen(buf);
814 }
815
816 static ssize_t set_port_type(struct device *dev,
817 struct device_attribute *attr,
818 const char *buf, size_t count)
819 {
820 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
821 port_attr);
822 struct mlx4_dev *mdev = info->dev;
823 struct mlx4_priv *priv = mlx4_priv(mdev);
824 enum mlx4_port_type types[MLX4_MAX_PORTS];
825 enum mlx4_port_type new_types[MLX4_MAX_PORTS];
826 int i;
827 int err = 0;
828
829 if (!strcmp(buf, "ib\n"))
830 info->tmp_type = MLX4_PORT_TYPE_IB;
831 else if (!strcmp(buf, "eth\n"))
832 info->tmp_type = MLX4_PORT_TYPE_ETH;
833 else if (!strcmp(buf, "auto\n"))
834 info->tmp_type = MLX4_PORT_TYPE_AUTO;
835 else {
836 mlx4_err(mdev, "%s is not supported port type\n", buf);
837 return -EINVAL;
838 }
839
840 mlx4_stop_sense(mdev);
841 mutex_lock(&priv->port_mutex);
842 /* Possible type is always the one that was delivered */
843 mdev->caps.possible_type[info->port] = info->tmp_type;
844
845 for (i = 0; i < mdev->caps.num_ports; i++) {
846 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
847 mdev->caps.possible_type[i+1];
848 if (types[i] == MLX4_PORT_TYPE_AUTO)
849 types[i] = mdev->caps.port_type[i+1];
850 }
851
852 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
853 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
854 for (i = 1; i <= mdev->caps.num_ports; i++) {
855 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
856 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
857 err = -EINVAL;
858 }
859 }
860 }
861 if (err) {
862 mlx4_err(mdev, "Auto sensing is not supported on this HCA. Set only 'eth' or 'ib' for both ports (should be the same)\n");
863 goto out;
864 }
865
866 mlx4_do_sense_ports(mdev, new_types, types);
867
868 err = mlx4_check_port_params(mdev, new_types);
869 if (err)
870 goto out;
871
872 /* We are about to apply the changes after the configuration
873 * was verified, no need to remember the temporary types
874 * any more */
875 for (i = 0; i < mdev->caps.num_ports; i++)
876 priv->port[i + 1].tmp_type = 0;
877
878 err = mlx4_change_port_types(mdev, new_types);
879
880 out:
881 mlx4_start_sense(mdev);
882 mutex_unlock(&priv->port_mutex);
883 return err ? err : count;
884 }
885
886 enum ibta_mtu {
887 IB_MTU_256 = 1,
888 IB_MTU_512 = 2,
889 IB_MTU_1024 = 3,
890 IB_MTU_2048 = 4,
891 IB_MTU_4096 = 5
892 };
893
894 static inline int int_to_ibta_mtu(int mtu)
895 {
896 switch (mtu) {
897 case 256: return IB_MTU_256;
898 case 512: return IB_MTU_512;
899 case 1024: return IB_MTU_1024;
900 case 2048: return IB_MTU_2048;
901 case 4096: return IB_MTU_4096;
902 default: return -1;
903 }
904 }
905
906 static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
907 {
908 switch (mtu) {
909 case IB_MTU_256: return 256;
910 case IB_MTU_512: return 512;
911 case IB_MTU_1024: return 1024;
912 case IB_MTU_2048: return 2048;
913 case IB_MTU_4096: return 4096;
914 default: return -1;
915 }
916 }
917
918 static ssize_t show_port_ib_mtu(struct device *dev,
919 struct device_attribute *attr,
920 char *buf)
921 {
922 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
923 port_mtu_attr);
924 struct mlx4_dev *mdev = info->dev;
925
926 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
927 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
928
929 sprintf(buf, "%d\n",
930 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
931 return strlen(buf);
932 }
933
934 static ssize_t set_port_ib_mtu(struct device *dev,
935 struct device_attribute *attr,
936 const char *buf, size_t count)
937 {
938 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
939 port_mtu_attr);
940 struct mlx4_dev *mdev = info->dev;
941 struct mlx4_priv *priv = mlx4_priv(mdev);
942 int err, port, mtu, ibta_mtu = -1;
943
944 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
945 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
946 return -EINVAL;
947 }
948
949 err = kstrtoint(buf, 0, &mtu);
950 if (!err)
951 ibta_mtu = int_to_ibta_mtu(mtu);
952
953 if (err || ibta_mtu < 0) {
954 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
955 return -EINVAL;
956 }
957
958 mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
959
960 mlx4_stop_sense(mdev);
961 mutex_lock(&priv->port_mutex);
962 mlx4_unregister_device(mdev);
963 for (port = 1; port <= mdev->caps.num_ports; port++) {
964 mlx4_CLOSE_PORT(mdev, port);
965 err = mlx4_SET_PORT(mdev, port, -1);
966 if (err) {
967 mlx4_err(mdev, "Failed to set port %d, aborting\n",
968 port);
969 goto err_set_port;
970 }
971 }
972 err = mlx4_register_device(mdev);
973 err_set_port:
974 mutex_unlock(&priv->port_mutex);
975 mlx4_start_sense(mdev);
976 return err ? err : count;
977 }
978
979 static int mlx4_load_fw(struct mlx4_dev *dev)
980 {
981 struct mlx4_priv *priv = mlx4_priv(dev);
982 int err;
983
984 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
985 GFP_HIGHUSER | __GFP_NOWARN, 0);
986 if (!priv->fw.fw_icm) {
987 mlx4_err(dev, "Couldn't allocate FW area, aborting\n");
988 return -ENOMEM;
989 }
990
991 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
992 if (err) {
993 mlx4_err(dev, "MAP_FA command failed, aborting\n");
994 goto err_free;
995 }
996
997 err = mlx4_RUN_FW(dev);
998 if (err) {
999 mlx4_err(dev, "RUN_FW command failed, aborting\n");
1000 goto err_unmap_fa;
1001 }
1002
1003 return 0;
1004
1005 err_unmap_fa:
1006 mlx4_UNMAP_FA(dev);
1007
1008 err_free:
1009 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1010 return err;
1011 }
1012
1013 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
1014 int cmpt_entry_sz)
1015 {
1016 struct mlx4_priv *priv = mlx4_priv(dev);
1017 int err;
1018 int num_eqs;
1019
1020 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
1021 cmpt_base +
1022 ((u64) (MLX4_CMPT_TYPE_QP *
1023 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1024 cmpt_entry_sz, dev->caps.num_qps,
1025 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1026 0, 0);
1027 if (err)
1028 goto err;
1029
1030 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
1031 cmpt_base +
1032 ((u64) (MLX4_CMPT_TYPE_SRQ *
1033 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1034 cmpt_entry_sz, dev->caps.num_srqs,
1035 dev->caps.reserved_srqs, 0, 0);
1036 if (err)
1037 goto err_qp;
1038
1039 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
1040 cmpt_base +
1041 ((u64) (MLX4_CMPT_TYPE_CQ *
1042 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1043 cmpt_entry_sz, dev->caps.num_cqs,
1044 dev->caps.reserved_cqs, 0, 0);
1045 if (err)
1046 goto err_srq;
1047
1048 num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
1049 dev->caps.num_eqs;
1050 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
1051 cmpt_base +
1052 ((u64) (MLX4_CMPT_TYPE_EQ *
1053 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1054 cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
1055 if (err)
1056 goto err_cq;
1057
1058 return 0;
1059
1060 err_cq:
1061 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1062
1063 err_srq:
1064 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1065
1066 err_qp:
1067 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1068
1069 err:
1070 return err;
1071 }
1072
1073 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
1074 struct mlx4_init_hca_param *init_hca, u64 icm_size)
1075 {
1076 struct mlx4_priv *priv = mlx4_priv(dev);
1077 u64 aux_pages;
1078 int num_eqs;
1079 int err;
1080
1081 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
1082 if (err) {
1083 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting\n");
1084 return err;
1085 }
1086
1087 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory\n",
1088 (unsigned long long) icm_size >> 10,
1089 (unsigned long long) aux_pages << 2);
1090
1091 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
1092 GFP_HIGHUSER | __GFP_NOWARN, 0);
1093 if (!priv->fw.aux_icm) {
1094 mlx4_err(dev, "Couldn't allocate aux memory, aborting\n");
1095 return -ENOMEM;
1096 }
1097
1098 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
1099 if (err) {
1100 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting\n");
1101 goto err_free_aux;
1102 }
1103
1104 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
1105 if (err) {
1106 mlx4_err(dev, "Failed to map cMPT context memory, aborting\n");
1107 goto err_unmap_aux;
1108 }
1109
1110
1111 num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
1112 dev->caps.num_eqs;
1113 err = mlx4_init_icm_table(dev, &priv->eq_table.table,
1114 init_hca->eqc_base, dev_cap->eqc_entry_sz,
1115 num_eqs, num_eqs, 0, 0);
1116 if (err) {
1117 mlx4_err(dev, "Failed to map EQ context memory, aborting\n");
1118 goto err_unmap_cmpt;
1119 }
1120
1121 /*
1122 * Reserved MTT entries must be aligned up to a cacheline
1123 * boundary, since the FW will write to them, while the driver
1124 * writes to all other MTT entries. (The variable
1125 * dev->caps.mtt_entry_sz below is really the MTT segment
1126 * size, not the raw entry size)
1127 */
1128 dev->caps.reserved_mtts =
1129 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
1130 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
1131
1132 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
1133 init_hca->mtt_base,
1134 dev->caps.mtt_entry_sz,
1135 dev->caps.num_mtts,
1136 dev->caps.reserved_mtts, 1, 0);
1137 if (err) {
1138 mlx4_err(dev, "Failed to map MTT context memory, aborting\n");
1139 goto err_unmap_eq;
1140 }
1141
1142 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
1143 init_hca->dmpt_base,
1144 dev_cap->dmpt_entry_sz,
1145 dev->caps.num_mpts,
1146 dev->caps.reserved_mrws, 1, 1);
1147 if (err) {
1148 mlx4_err(dev, "Failed to map dMPT context memory, aborting\n");
1149 goto err_unmap_mtt;
1150 }
1151
1152 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
1153 init_hca->qpc_base,
1154 dev_cap->qpc_entry_sz,
1155 dev->caps.num_qps,
1156 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1157 0, 0);
1158 if (err) {
1159 mlx4_err(dev, "Failed to map QP context memory, aborting\n");
1160 goto err_unmap_dmpt;
1161 }
1162
1163 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
1164 init_hca->auxc_base,
1165 dev_cap->aux_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 AUXC context memory, aborting\n");
1171 goto err_unmap_qp;
1172 }
1173
1174 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
1175 init_hca->altc_base,
1176 dev_cap->altc_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 ALTC context memory, aborting\n");
1182 goto err_unmap_auxc;
1183 }
1184
1185 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
1186 init_hca->rdmarc_base,
1187 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
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 RDMARC context memory, aborting\n");
1193 goto err_unmap_altc;
1194 }
1195
1196 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
1197 init_hca->cqc_base,
1198 dev_cap->cqc_entry_sz,
1199 dev->caps.num_cqs,
1200 dev->caps.reserved_cqs, 0, 0);
1201 if (err) {
1202 mlx4_err(dev, "Failed to map CQ context memory, aborting\n");
1203 goto err_unmap_rdmarc;
1204 }
1205
1206 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
1207 init_hca->srqc_base,
1208 dev_cap->srq_entry_sz,
1209 dev->caps.num_srqs,
1210 dev->caps.reserved_srqs, 0, 0);
1211 if (err) {
1212 mlx4_err(dev, "Failed to map SRQ context memory, aborting\n");
1213 goto err_unmap_cq;
1214 }
1215
1216 /*
1217 * For flow steering device managed mode it is required to use
1218 * mlx4_init_icm_table. For B0 steering mode it's not strictly
1219 * required, but for simplicity just map the whole multicast
1220 * group table now. The table isn't very big and it's a lot
1221 * easier than trying to track ref counts.
1222 */
1223 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1224 init_hca->mc_base,
1225 mlx4_get_mgm_entry_size(dev),
1226 dev->caps.num_mgms + dev->caps.num_amgms,
1227 dev->caps.num_mgms + dev->caps.num_amgms,
1228 0, 0);
1229 if (err) {
1230 mlx4_err(dev, "Failed to map MCG context memory, aborting\n");
1231 goto err_unmap_srq;
1232 }
1233
1234 return 0;
1235
1236 err_unmap_srq:
1237 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1238
1239 err_unmap_cq:
1240 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1241
1242 err_unmap_rdmarc:
1243 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1244
1245 err_unmap_altc:
1246 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1247
1248 err_unmap_auxc:
1249 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1250
1251 err_unmap_qp:
1252 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1253
1254 err_unmap_dmpt:
1255 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1256
1257 err_unmap_mtt:
1258 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1259
1260 err_unmap_eq:
1261 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1262
1263 err_unmap_cmpt:
1264 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1265 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1266 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1267 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1268
1269 err_unmap_aux:
1270 mlx4_UNMAP_ICM_AUX(dev);
1271
1272 err_free_aux:
1273 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1274
1275 return err;
1276 }
1277
1278 static void mlx4_free_icms(struct mlx4_dev *dev)
1279 {
1280 struct mlx4_priv *priv = mlx4_priv(dev);
1281
1282 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1283 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1284 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1285 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1286 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1287 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1288 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1289 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1290 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1291 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1292 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1293 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1294 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1295 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1296
1297 mlx4_UNMAP_ICM_AUX(dev);
1298 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1299 }
1300
1301 static void mlx4_slave_exit(struct mlx4_dev *dev)
1302 {
1303 struct mlx4_priv *priv = mlx4_priv(dev);
1304
1305 mutex_lock(&priv->cmd.slave_cmd_mutex);
1306 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_TIME))
1307 mlx4_warn(dev, "Failed to close slave function\n");
1308 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1309 }
1310
1311 static int map_bf_area(struct mlx4_dev *dev)
1312 {
1313 struct mlx4_priv *priv = mlx4_priv(dev);
1314 resource_size_t bf_start;
1315 resource_size_t bf_len;
1316 int err = 0;
1317
1318 if (!dev->caps.bf_reg_size)
1319 return -ENXIO;
1320
1321 bf_start = pci_resource_start(dev->pdev, 2) +
1322 (dev->caps.num_uars << PAGE_SHIFT);
1323 bf_len = pci_resource_len(dev->pdev, 2) -
1324 (dev->caps.num_uars << PAGE_SHIFT);
1325 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1326 if (!priv->bf_mapping)
1327 err = -ENOMEM;
1328
1329 return err;
1330 }
1331
1332 static void unmap_bf_area(struct mlx4_dev *dev)
1333 {
1334 if (mlx4_priv(dev)->bf_mapping)
1335 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1336 }
1337
1338 cycle_t mlx4_read_clock(struct mlx4_dev *dev)
1339 {
1340 u32 clockhi, clocklo, clockhi1;
1341 cycle_t cycles;
1342 int i;
1343 struct mlx4_priv *priv = mlx4_priv(dev);
1344
1345 for (i = 0; i < 10; i++) {
1346 clockhi = swab32(readl(priv->clock_mapping));
1347 clocklo = swab32(readl(priv->clock_mapping + 4));
1348 clockhi1 = swab32(readl(priv->clock_mapping));
1349 if (clockhi == clockhi1)
1350 break;
1351 }
1352
1353 cycles = (u64) clockhi << 32 | (u64) clocklo;
1354
1355 return cycles;
1356 }
1357 EXPORT_SYMBOL_GPL(mlx4_read_clock);
1358
1359
1360 static int map_internal_clock(struct mlx4_dev *dev)
1361 {
1362 struct mlx4_priv *priv = mlx4_priv(dev);
1363
1364 priv->clock_mapping =
1365 ioremap(pci_resource_start(dev->pdev, priv->fw.clock_bar) +
1366 priv->fw.clock_offset, MLX4_CLOCK_SIZE);
1367
1368 if (!priv->clock_mapping)
1369 return -ENOMEM;
1370
1371 return 0;
1372 }
1373
1374 static void unmap_internal_clock(struct mlx4_dev *dev)
1375 {
1376 struct mlx4_priv *priv = mlx4_priv(dev);
1377
1378 if (priv->clock_mapping)
1379 iounmap(priv->clock_mapping);
1380 }
1381
1382 static void mlx4_close_hca(struct mlx4_dev *dev)
1383 {
1384 unmap_internal_clock(dev);
1385 unmap_bf_area(dev);
1386 if (mlx4_is_slave(dev))
1387 mlx4_slave_exit(dev);
1388 else {
1389 mlx4_CLOSE_HCA(dev, 0);
1390 mlx4_free_icms(dev);
1391 mlx4_UNMAP_FA(dev);
1392 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1393 }
1394 }
1395
1396 static int mlx4_init_slave(struct mlx4_dev *dev)
1397 {
1398 struct mlx4_priv *priv = mlx4_priv(dev);
1399 u64 dma = (u64) priv->mfunc.vhcr_dma;
1400 int ret_from_reset = 0;
1401 u32 slave_read;
1402 u32 cmd_channel_ver;
1403
1404 if (atomic_read(&pf_loading)) {
1405 mlx4_warn(dev, "PF is not ready - Deferring probe\n");
1406 return -EPROBE_DEFER;
1407 }
1408
1409 mutex_lock(&priv->cmd.slave_cmd_mutex);
1410 priv->cmd.max_cmds = 1;
1411 mlx4_warn(dev, "Sending reset\n");
1412 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
1413 MLX4_COMM_TIME);
1414 /* if we are in the middle of flr the slave will try
1415 * NUM_OF_RESET_RETRIES times before leaving.*/
1416 if (ret_from_reset) {
1417 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
1418 mlx4_warn(dev, "slave is currently in the middle of FLR - Deferring probe\n");
1419 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1420 return -EPROBE_DEFER;
1421 } else
1422 goto err;
1423 }
1424
1425 /* check the driver version - the slave I/F revision
1426 * must match the master's */
1427 slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
1428 cmd_channel_ver = mlx4_comm_get_version();
1429
1430 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
1431 MLX4_COMM_GET_IF_REV(slave_read)) {
1432 mlx4_err(dev, "slave driver version is not supported by the master\n");
1433 goto err;
1434 }
1435
1436 mlx4_warn(dev, "Sending vhcr0\n");
1437 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
1438 MLX4_COMM_TIME))
1439 goto err;
1440 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
1441 MLX4_COMM_TIME))
1442 goto err;
1443 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
1444 MLX4_COMM_TIME))
1445 goto err;
1446 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma, MLX4_COMM_TIME))
1447 goto err;
1448
1449 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1450 return 0;
1451
1452 err:
1453 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, 0);
1454 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1455 return -EIO;
1456 }
1457
1458 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
1459 {
1460 int i;
1461
1462 for (i = 1; i <= dev->caps.num_ports; i++) {
1463 if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
1464 dev->caps.gid_table_len[i] =
1465 mlx4_get_slave_num_gids(dev, 0, i);
1466 else
1467 dev->caps.gid_table_len[i] = 1;
1468 dev->caps.pkey_table_len[i] =
1469 dev->phys_caps.pkey_phys_table_len[i] - 1;
1470 }
1471 }
1472
1473 static int choose_log_fs_mgm_entry_size(int qp_per_entry)
1474 {
1475 int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE;
1476
1477 for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE;
1478 i++) {
1479 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2))
1480 break;
1481 }
1482
1483 return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1;
1484 }
1485
1486 static void choose_steering_mode(struct mlx4_dev *dev,
1487 struct mlx4_dev_cap *dev_cap)
1488 {
1489 if (mlx4_log_num_mgm_entry_size == -1 &&
1490 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN &&
1491 (!mlx4_is_mfunc(dev) ||
1492 (dev_cap->fs_max_num_qp_per_entry >= (dev->num_vfs + 1))) &&
1493 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >=
1494 MLX4_MIN_MGM_LOG_ENTRY_SIZE) {
1495 dev->oper_log_mgm_entry_size =
1496 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry);
1497 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
1498 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
1499 dev->caps.fs_log_max_ucast_qp_range_size =
1500 dev_cap->fs_log_max_ucast_qp_range_size;
1501 } else {
1502 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER &&
1503 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1504 dev->caps.steering_mode = MLX4_STEERING_MODE_B0;
1505 else {
1506 dev->caps.steering_mode = MLX4_STEERING_MODE_A0;
1507
1508 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER ||
1509 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1510 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags set to use B0 steering - falling back to A0 steering mode\n");
1511 }
1512 dev->oper_log_mgm_entry_size =
1513 mlx4_log_num_mgm_entry_size > 0 ?
1514 mlx4_log_num_mgm_entry_size :
1515 MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
1516 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev);
1517 }
1518 mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, modparam log_num_mgm_entry_size = %d\n",
1519 mlx4_steering_mode_str(dev->caps.steering_mode),
1520 dev->oper_log_mgm_entry_size,
1521 mlx4_log_num_mgm_entry_size);
1522 }
1523
1524 static void choose_tunnel_offload_mode(struct mlx4_dev *dev,
1525 struct mlx4_dev_cap *dev_cap)
1526 {
1527 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED &&
1528 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
1529 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_VXLAN;
1530 else
1531 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_NONE;
1532
1533 mlx4_dbg(dev, "Tunneling offload mode is: %s\n", (dev->caps.tunnel_offload_mode
1534 == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) ? "vxlan" : "none");
1535 }
1536
1537 static int mlx4_init_hca(struct mlx4_dev *dev)
1538 {
1539 struct mlx4_priv *priv = mlx4_priv(dev);
1540 struct mlx4_adapter adapter;
1541 struct mlx4_dev_cap dev_cap;
1542 struct mlx4_mod_stat_cfg mlx4_cfg;
1543 struct mlx4_profile profile;
1544 struct mlx4_init_hca_param init_hca;
1545 u64 icm_size;
1546 int err;
1547
1548 if (!mlx4_is_slave(dev)) {
1549 err = mlx4_QUERY_FW(dev);
1550 if (err) {
1551 if (err == -EACCES)
1552 mlx4_info(dev, "non-primary physical function, skipping\n");
1553 else
1554 mlx4_err(dev, "QUERY_FW command failed, aborting\n");
1555 return err;
1556 }
1557
1558 err = mlx4_load_fw(dev);
1559 if (err) {
1560 mlx4_err(dev, "Failed to start FW, aborting\n");
1561 return err;
1562 }
1563
1564 mlx4_cfg.log_pg_sz_m = 1;
1565 mlx4_cfg.log_pg_sz = 0;
1566 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
1567 if (err)
1568 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
1569
1570 err = mlx4_dev_cap(dev, &dev_cap);
1571 if (err) {
1572 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
1573 goto err_stop_fw;
1574 }
1575
1576 choose_steering_mode(dev, &dev_cap);
1577 choose_tunnel_offload_mode(dev, &dev_cap);
1578
1579 err = mlx4_get_phys_port_id(dev);
1580 if (err)
1581 mlx4_err(dev, "Fail to get physical port id\n");
1582
1583 if (mlx4_is_master(dev))
1584 mlx4_parav_master_pf_caps(dev);
1585
1586 profile = default_profile;
1587 if (dev->caps.steering_mode ==
1588 MLX4_STEERING_MODE_DEVICE_MANAGED)
1589 profile.num_mcg = MLX4_FS_NUM_MCG;
1590
1591 icm_size = mlx4_make_profile(dev, &profile, &dev_cap,
1592 &init_hca);
1593 if ((long long) icm_size < 0) {
1594 err = icm_size;
1595 goto err_stop_fw;
1596 }
1597
1598 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
1599
1600 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
1601 init_hca.uar_page_sz = PAGE_SHIFT - 12;
1602 init_hca.mw_enabled = 0;
1603 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
1604 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
1605 init_hca.mw_enabled = INIT_HCA_TPT_MW_ENABLE;
1606
1607 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
1608 if (err)
1609 goto err_stop_fw;
1610
1611 err = mlx4_INIT_HCA(dev, &init_hca);
1612 if (err) {
1613 mlx4_err(dev, "INIT_HCA command failed, aborting\n");
1614 goto err_free_icm;
1615 }
1616 /*
1617 * If TS is supported by FW
1618 * read HCA frequency by QUERY_HCA command
1619 */
1620 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
1621 memset(&init_hca, 0, sizeof(init_hca));
1622 err = mlx4_QUERY_HCA(dev, &init_hca);
1623 if (err) {
1624 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp\n");
1625 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1626 } else {
1627 dev->caps.hca_core_clock =
1628 init_hca.hca_core_clock;
1629 }
1630
1631 /* In case we got HCA frequency 0 - disable timestamping
1632 * to avoid dividing by zero
1633 */
1634 if (!dev->caps.hca_core_clock) {
1635 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1636 mlx4_err(dev,
1637 "HCA frequency is 0 - timestamping is not supported\n");
1638 } else if (map_internal_clock(dev)) {
1639 /*
1640 * Map internal clock,
1641 * in case of failure disable timestamping
1642 */
1643 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1644 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported\n");
1645 }
1646 }
1647 } else {
1648 err = mlx4_init_slave(dev);
1649 if (err) {
1650 if (err != -EPROBE_DEFER)
1651 mlx4_err(dev, "Failed to initialize slave\n");
1652 return err;
1653 }
1654
1655 err = mlx4_slave_cap(dev);
1656 if (err) {
1657 mlx4_err(dev, "Failed to obtain slave caps\n");
1658 goto err_close;
1659 }
1660 }
1661
1662 if (map_bf_area(dev))
1663 mlx4_dbg(dev, "Failed to map blue flame area\n");
1664
1665 /*Only the master set the ports, all the rest got it from it.*/
1666 if (!mlx4_is_slave(dev))
1667 mlx4_set_port_mask(dev);
1668
1669 err = mlx4_QUERY_ADAPTER(dev, &adapter);
1670 if (err) {
1671 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting\n");
1672 goto unmap_bf;
1673 }
1674
1675 priv->eq_table.inta_pin = adapter.inta_pin;
1676 memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
1677
1678 return 0;
1679
1680 unmap_bf:
1681 unmap_internal_clock(dev);
1682 unmap_bf_area(dev);
1683
1684 err_close:
1685 if (mlx4_is_slave(dev))
1686 mlx4_slave_exit(dev);
1687 else
1688 mlx4_CLOSE_HCA(dev, 0);
1689
1690 err_free_icm:
1691 if (!mlx4_is_slave(dev))
1692 mlx4_free_icms(dev);
1693
1694 err_stop_fw:
1695 if (!mlx4_is_slave(dev)) {
1696 mlx4_UNMAP_FA(dev);
1697 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1698 }
1699 return err;
1700 }
1701
1702 static int mlx4_init_counters_table(struct mlx4_dev *dev)
1703 {
1704 struct mlx4_priv *priv = mlx4_priv(dev);
1705 int nent;
1706
1707 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1708 return -ENOENT;
1709
1710 nent = dev->caps.max_counters;
1711 return mlx4_bitmap_init(&priv->counters_bitmap, nent, nent - 1, 0, 0);
1712 }
1713
1714 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
1715 {
1716 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
1717 }
1718
1719 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1720 {
1721 struct mlx4_priv *priv = mlx4_priv(dev);
1722
1723 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1724 return -ENOENT;
1725
1726 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
1727 if (*idx == -1)
1728 return -ENOMEM;
1729
1730 return 0;
1731 }
1732
1733 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1734 {
1735 u64 out_param;
1736 int err;
1737
1738 if (mlx4_is_mfunc(dev)) {
1739 err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
1740 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
1741 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
1742 if (!err)
1743 *idx = get_param_l(&out_param);
1744
1745 return err;
1746 }
1747 return __mlx4_counter_alloc(dev, idx);
1748 }
1749 EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
1750
1751 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1752 {
1753 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR);
1754 return;
1755 }
1756
1757 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1758 {
1759 u64 in_param = 0;
1760
1761 if (mlx4_is_mfunc(dev)) {
1762 set_param_l(&in_param, idx);
1763 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
1764 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
1765 MLX4_CMD_WRAPPED);
1766 return;
1767 }
1768 __mlx4_counter_free(dev, idx);
1769 }
1770 EXPORT_SYMBOL_GPL(mlx4_counter_free);
1771
1772 static int mlx4_setup_hca(struct mlx4_dev *dev)
1773 {
1774 struct mlx4_priv *priv = mlx4_priv(dev);
1775 int err;
1776 int port;
1777 __be32 ib_port_default_caps;
1778
1779 err = mlx4_init_uar_table(dev);
1780 if (err) {
1781 mlx4_err(dev, "Failed to initialize user access region table, aborting\n");
1782 return err;
1783 }
1784
1785 err = mlx4_uar_alloc(dev, &priv->driver_uar);
1786 if (err) {
1787 mlx4_err(dev, "Failed to allocate driver access region, aborting\n");
1788 goto err_uar_table_free;
1789 }
1790
1791 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
1792 if (!priv->kar) {
1793 mlx4_err(dev, "Couldn't map kernel access region, aborting\n");
1794 err = -ENOMEM;
1795 goto err_uar_free;
1796 }
1797
1798 err = mlx4_init_pd_table(dev);
1799 if (err) {
1800 mlx4_err(dev, "Failed to initialize protection domain table, aborting\n");
1801 goto err_kar_unmap;
1802 }
1803
1804 err = mlx4_init_xrcd_table(dev);
1805 if (err) {
1806 mlx4_err(dev, "Failed to initialize reliable connection domain table, aborting\n");
1807 goto err_pd_table_free;
1808 }
1809
1810 err = mlx4_init_mr_table(dev);
1811 if (err) {
1812 mlx4_err(dev, "Failed to initialize memory region table, aborting\n");
1813 goto err_xrcd_table_free;
1814 }
1815
1816 if (!mlx4_is_slave(dev)) {
1817 err = mlx4_init_mcg_table(dev);
1818 if (err) {
1819 mlx4_err(dev, "Failed to initialize multicast group table, aborting\n");
1820 goto err_mr_table_free;
1821 }
1822 }
1823
1824 err = mlx4_init_eq_table(dev);
1825 if (err) {
1826 mlx4_err(dev, "Failed to initialize event queue table, aborting\n");
1827 goto err_mcg_table_free;
1828 }
1829
1830 err = mlx4_cmd_use_events(dev);
1831 if (err) {
1832 mlx4_err(dev, "Failed to switch to event-driven firmware commands, aborting\n");
1833 goto err_eq_table_free;
1834 }
1835
1836 err = mlx4_NOP(dev);
1837 if (err) {
1838 if (dev->flags & MLX4_FLAG_MSI_X) {
1839 mlx4_warn(dev, "NOP command failed to generate MSI-X interrupt IRQ %d)\n",
1840 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1841 mlx4_warn(dev, "Trying again without MSI-X\n");
1842 } else {
1843 mlx4_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting\n",
1844 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1845 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
1846 }
1847
1848 goto err_cmd_poll;
1849 }
1850
1851 mlx4_dbg(dev, "NOP command IRQ test passed\n");
1852
1853 err = mlx4_init_cq_table(dev);
1854 if (err) {
1855 mlx4_err(dev, "Failed to initialize completion queue table, aborting\n");
1856 goto err_cmd_poll;
1857 }
1858
1859 err = mlx4_init_srq_table(dev);
1860 if (err) {
1861 mlx4_err(dev, "Failed to initialize shared receive queue table, aborting\n");
1862 goto err_cq_table_free;
1863 }
1864
1865 err = mlx4_init_qp_table(dev);
1866 if (err) {
1867 mlx4_err(dev, "Failed to initialize queue pair table, aborting\n");
1868 goto err_srq_table_free;
1869 }
1870
1871 err = mlx4_init_counters_table(dev);
1872 if (err && err != -ENOENT) {
1873 mlx4_err(dev, "Failed to initialize counters table, aborting\n");
1874 goto err_qp_table_free;
1875 }
1876
1877 if (!mlx4_is_slave(dev)) {
1878 for (port = 1; port <= dev->caps.num_ports; port++) {
1879 ib_port_default_caps = 0;
1880 err = mlx4_get_port_ib_caps(dev, port,
1881 &ib_port_default_caps);
1882 if (err)
1883 mlx4_warn(dev, "failed to get port %d default ib capabilities (%d). Continuing with caps = 0\n",
1884 port, err);
1885 dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
1886
1887 /* initialize per-slave default ib port capabilities */
1888 if (mlx4_is_master(dev)) {
1889 int i;
1890 for (i = 0; i < dev->num_slaves; i++) {
1891 if (i == mlx4_master_func_num(dev))
1892 continue;
1893 priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
1894 ib_port_default_caps;
1895 }
1896 }
1897
1898 if (mlx4_is_mfunc(dev))
1899 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
1900 else
1901 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
1902
1903 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
1904 dev->caps.pkey_table_len[port] : -1);
1905 if (err) {
1906 mlx4_err(dev, "Failed to set port %d, aborting\n",
1907 port);
1908 goto err_counters_table_free;
1909 }
1910 }
1911 }
1912
1913 return 0;
1914
1915 err_counters_table_free:
1916 mlx4_cleanup_counters_table(dev);
1917
1918 err_qp_table_free:
1919 mlx4_cleanup_qp_table(dev);
1920
1921 err_srq_table_free:
1922 mlx4_cleanup_srq_table(dev);
1923
1924 err_cq_table_free:
1925 mlx4_cleanup_cq_table(dev);
1926
1927 err_cmd_poll:
1928 mlx4_cmd_use_polling(dev);
1929
1930 err_eq_table_free:
1931 mlx4_cleanup_eq_table(dev);
1932
1933 err_mcg_table_free:
1934 if (!mlx4_is_slave(dev))
1935 mlx4_cleanup_mcg_table(dev);
1936
1937 err_mr_table_free:
1938 mlx4_cleanup_mr_table(dev);
1939
1940 err_xrcd_table_free:
1941 mlx4_cleanup_xrcd_table(dev);
1942
1943 err_pd_table_free:
1944 mlx4_cleanup_pd_table(dev);
1945
1946 err_kar_unmap:
1947 iounmap(priv->kar);
1948
1949 err_uar_free:
1950 mlx4_uar_free(dev, &priv->driver_uar);
1951
1952 err_uar_table_free:
1953 mlx4_cleanup_uar_table(dev);
1954 return err;
1955 }
1956
1957 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
1958 {
1959 struct mlx4_priv *priv = mlx4_priv(dev);
1960 struct msix_entry *entries;
1961 int nreq = min_t(int, dev->caps.num_ports *
1962 min_t(int, num_online_cpus() + 1,
1963 MAX_MSIX_P_PORT) + MSIX_LEGACY_SZ, MAX_MSIX);
1964 int i;
1965
1966 if (msi_x) {
1967 nreq = min_t(int, dev->caps.num_eqs - dev->caps.reserved_eqs,
1968 nreq);
1969
1970 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
1971 if (!entries)
1972 goto no_msi;
1973
1974 for (i = 0; i < nreq; ++i)
1975 entries[i].entry = i;
1976
1977 nreq = pci_enable_msix_range(dev->pdev, entries, 2, nreq);
1978
1979 if (nreq < 0) {
1980 kfree(entries);
1981 goto no_msi;
1982 } else if (nreq < MSIX_LEGACY_SZ +
1983 dev->caps.num_ports * MIN_MSIX_P_PORT) {
1984 /*Working in legacy mode , all EQ's shared*/
1985 dev->caps.comp_pool = 0;
1986 dev->caps.num_comp_vectors = nreq - 1;
1987 } else {
1988 dev->caps.comp_pool = nreq - MSIX_LEGACY_SZ;
1989 dev->caps.num_comp_vectors = MSIX_LEGACY_SZ - 1;
1990 }
1991 for (i = 0; i < nreq; ++i)
1992 priv->eq_table.eq[i].irq = entries[i].vector;
1993
1994 dev->flags |= MLX4_FLAG_MSI_X;
1995
1996 kfree(entries);
1997 return;
1998 }
1999
2000 no_msi:
2001 dev->caps.num_comp_vectors = 1;
2002 dev->caps.comp_pool = 0;
2003
2004 for (i = 0; i < 2; ++i)
2005 priv->eq_table.eq[i].irq = dev->pdev->irq;
2006 }
2007
2008 static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
2009 {
2010 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
2011 int err = 0;
2012
2013 info->dev = dev;
2014 info->port = port;
2015 if (!mlx4_is_slave(dev)) {
2016 mlx4_init_mac_table(dev, &info->mac_table);
2017 mlx4_init_vlan_table(dev, &info->vlan_table);
2018 info->base_qpn = mlx4_get_base_qpn(dev, port);
2019 }
2020
2021 sprintf(info->dev_name, "mlx4_port%d", port);
2022 info->port_attr.attr.name = info->dev_name;
2023 if (mlx4_is_mfunc(dev))
2024 info->port_attr.attr.mode = S_IRUGO;
2025 else {
2026 info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
2027 info->port_attr.store = set_port_type;
2028 }
2029 info->port_attr.show = show_port_type;
2030 sysfs_attr_init(&info->port_attr.attr);
2031
2032 err = device_create_file(&dev->pdev->dev, &info->port_attr);
2033 if (err) {
2034 mlx4_err(dev, "Failed to create file for port %d\n", port);
2035 info->port = -1;
2036 }
2037
2038 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
2039 info->port_mtu_attr.attr.name = info->dev_mtu_name;
2040 if (mlx4_is_mfunc(dev))
2041 info->port_mtu_attr.attr.mode = S_IRUGO;
2042 else {
2043 info->port_mtu_attr.attr.mode = S_IRUGO | S_IWUSR;
2044 info->port_mtu_attr.store = set_port_ib_mtu;
2045 }
2046 info->port_mtu_attr.show = show_port_ib_mtu;
2047 sysfs_attr_init(&info->port_mtu_attr.attr);
2048
2049 err = device_create_file(&dev->pdev->dev, &info->port_mtu_attr);
2050 if (err) {
2051 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
2052 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
2053 info->port = -1;
2054 }
2055
2056 return err;
2057 }
2058
2059 static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
2060 {
2061 if (info->port < 0)
2062 return;
2063
2064 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
2065 device_remove_file(&info->dev->pdev->dev, &info->port_mtu_attr);
2066 }
2067
2068 static int mlx4_init_steering(struct mlx4_dev *dev)
2069 {
2070 struct mlx4_priv *priv = mlx4_priv(dev);
2071 int num_entries = dev->caps.num_ports;
2072 int i, j;
2073
2074 priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL);
2075 if (!priv->steer)
2076 return -ENOMEM;
2077
2078 for (i = 0; i < num_entries; i++)
2079 for (j = 0; j < MLX4_NUM_STEERS; j++) {
2080 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
2081 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
2082 }
2083 return 0;
2084 }
2085
2086 static void mlx4_clear_steering(struct mlx4_dev *dev)
2087 {
2088 struct mlx4_priv *priv = mlx4_priv(dev);
2089 struct mlx4_steer_index *entry, *tmp_entry;
2090 struct mlx4_promisc_qp *pqp, *tmp_pqp;
2091 int num_entries = dev->caps.num_ports;
2092 int i, j;
2093
2094 for (i = 0; i < num_entries; i++) {
2095 for (j = 0; j < MLX4_NUM_STEERS; j++) {
2096 list_for_each_entry_safe(pqp, tmp_pqp,
2097 &priv->steer[i].promisc_qps[j],
2098 list) {
2099 list_del(&pqp->list);
2100 kfree(pqp);
2101 }
2102 list_for_each_entry_safe(entry, tmp_entry,
2103 &priv->steer[i].steer_entries[j],
2104 list) {
2105 list_del(&entry->list);
2106 list_for_each_entry_safe(pqp, tmp_pqp,
2107 &entry->duplicates,
2108 list) {
2109 list_del(&pqp->list);
2110 kfree(pqp);
2111 }
2112 kfree(entry);
2113 }
2114 }
2115 }
2116 kfree(priv->steer);
2117 }
2118
2119 static int extended_func_num(struct pci_dev *pdev)
2120 {
2121 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
2122 }
2123
2124 #define MLX4_OWNER_BASE 0x8069c
2125 #define MLX4_OWNER_SIZE 4
2126
2127 static int mlx4_get_ownership(struct mlx4_dev *dev)
2128 {
2129 void __iomem *owner;
2130 u32 ret;
2131
2132 if (pci_channel_offline(dev->pdev))
2133 return -EIO;
2134
2135 owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
2136 MLX4_OWNER_SIZE);
2137 if (!owner) {
2138 mlx4_err(dev, "Failed to obtain ownership bit\n");
2139 return -ENOMEM;
2140 }
2141
2142 ret = readl(owner);
2143 iounmap(owner);
2144 return (int) !!ret;
2145 }
2146
2147 static void mlx4_free_ownership(struct mlx4_dev *dev)
2148 {
2149 void __iomem *owner;
2150
2151 if (pci_channel_offline(dev->pdev))
2152 return;
2153
2154 owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
2155 MLX4_OWNER_SIZE);
2156 if (!owner) {
2157 mlx4_err(dev, "Failed to obtain ownership bit\n");
2158 return;
2159 }
2160 writel(0, owner);
2161 msleep(1000);
2162 iounmap(owner);
2163 }
2164
2165 static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data)
2166 {
2167 struct mlx4_priv *priv;
2168 struct mlx4_dev *dev;
2169 int err;
2170 int port;
2171 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
2172 int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0};
2173 const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = {
2174 {2, 0, 0}, {0, 1, 2}, {0, 1, 2} };
2175 unsigned total_vfs = 0;
2176 int sriov_initialized = 0;
2177 unsigned int i;
2178
2179 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
2180
2181 err = pci_enable_device(pdev);
2182 if (err) {
2183 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
2184 return err;
2185 }
2186
2187 /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS
2188 * per port, we must limit the number of VFs to 63 (since their are
2189 * 128 MACs)
2190 */
2191 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) && i < num_vfs_argc;
2192 total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) {
2193 nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i];
2194 if (nvfs[i] < 0) {
2195 dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n");
2196 return -EINVAL;
2197 }
2198 }
2199 for (i = 0; i < sizeof(prb_vf)/sizeof(prb_vf[0]) && i < probe_vfs_argc;
2200 i++) {
2201 prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i];
2202 if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) {
2203 dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n");
2204 return -EINVAL;
2205 }
2206 }
2207 if (total_vfs >= MLX4_MAX_NUM_VF) {
2208 dev_err(&pdev->dev,
2209 "Requested more VF's (%d) than allowed (%d)\n",
2210 total_vfs, MLX4_MAX_NUM_VF - 1);
2211 return -EINVAL;
2212 }
2213
2214 for (i = 0; i < MLX4_MAX_PORTS; i++) {
2215 if (nvfs[i] + nvfs[2] >= MLX4_MAX_NUM_VF_P_PORT) {
2216 dev_err(&pdev->dev,
2217 "Requested more VF's (%d) for port (%d) than allowed (%d)\n",
2218 nvfs[i] + nvfs[2], i + 1,
2219 MLX4_MAX_NUM_VF_P_PORT - 1);
2220 return -EINVAL;
2221 }
2222 }
2223
2224
2225 /*
2226 * Check for BARs.
2227 */
2228 if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) &&
2229 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2230 dev_err(&pdev->dev, "Missing DCS, aborting (driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n",
2231 pci_dev_data, pci_resource_flags(pdev, 0));
2232 err = -ENODEV;
2233 goto err_disable_pdev;
2234 }
2235 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
2236 dev_err(&pdev->dev, "Missing UAR, aborting\n");
2237 err = -ENODEV;
2238 goto err_disable_pdev;
2239 }
2240
2241 err = pci_request_regions(pdev, DRV_NAME);
2242 if (err) {
2243 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
2244 goto err_disable_pdev;
2245 }
2246
2247 pci_set_master(pdev);
2248
2249 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2250 if (err) {
2251 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
2252 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2253 if (err) {
2254 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
2255 goto err_release_regions;
2256 }
2257 }
2258 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
2259 if (err) {
2260 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
2261 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2262 if (err) {
2263 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, aborting\n");
2264 goto err_release_regions;
2265 }
2266 }
2267
2268 /* Allow large DMA segments, up to the firmware limit of 1 GB */
2269 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
2270
2271 dev = pci_get_drvdata(pdev);
2272 priv = mlx4_priv(dev);
2273 dev->pdev = pdev;
2274 INIT_LIST_HEAD(&priv->ctx_list);
2275 spin_lock_init(&priv->ctx_lock);
2276
2277 mutex_init(&priv->port_mutex);
2278
2279 INIT_LIST_HEAD(&priv->pgdir_list);
2280 mutex_init(&priv->pgdir_mutex);
2281
2282 INIT_LIST_HEAD(&priv->bf_list);
2283 mutex_init(&priv->bf_mutex);
2284
2285 dev->rev_id = pdev->revision;
2286 dev->numa_node = dev_to_node(&pdev->dev);
2287 /* Detect if this device is a virtual function */
2288 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
2289 /* When acting as pf, we normally skip vfs unless explicitly
2290 * requested to probe them. */
2291 if (total_vfs) {
2292 unsigned vfs_offset = 0;
2293 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) &&
2294 vfs_offset + nvfs[i] < extended_func_num(pdev);
2295 vfs_offset += nvfs[i], i++)
2296 ;
2297 if (i == sizeof(nvfs)/sizeof(nvfs[0])) {
2298 err = -ENODEV;
2299 goto err_free_dev;
2300 }
2301 if ((extended_func_num(pdev) - vfs_offset)
2302 > prb_vf[i]) {
2303 mlx4_warn(dev, "Skipping virtual function:%d\n",
2304 extended_func_num(pdev));
2305 err = -ENODEV;
2306 goto err_free_dev;
2307 }
2308 }
2309 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
2310 dev->flags |= MLX4_FLAG_SLAVE;
2311 } else {
2312 /* We reset the device and enable SRIOV only for physical
2313 * devices. Try to claim ownership on the device;
2314 * if already taken, skip -- do not allow multiple PFs */
2315 err = mlx4_get_ownership(dev);
2316 if (err) {
2317 if (err < 0)
2318 goto err_free_dev;
2319 else {
2320 mlx4_warn(dev, "Multiple PFs not yet supported - Skipping PF\n");
2321 err = -EINVAL;
2322 goto err_free_dev;
2323 }
2324 }
2325
2326 if (total_vfs) {
2327 mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n",
2328 total_vfs);
2329 dev->dev_vfs = kzalloc(
2330 total_vfs * sizeof(*dev->dev_vfs),
2331 GFP_KERNEL);
2332 if (NULL == dev->dev_vfs) {
2333 mlx4_err(dev, "Failed to allocate memory for VFs\n");
2334 err = 0;
2335 } else {
2336 atomic_inc(&pf_loading);
2337 err = pci_enable_sriov(pdev, total_vfs);
2338 if (err) {
2339 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d)\n",
2340 err);
2341 atomic_dec(&pf_loading);
2342 err = 0;
2343 } else {
2344 mlx4_warn(dev, "Running in master mode\n");
2345 dev->flags |= MLX4_FLAG_SRIOV |
2346 MLX4_FLAG_MASTER;
2347 dev->num_vfs = total_vfs;
2348 sriov_initialized = 1;
2349 }
2350 }
2351 }
2352
2353 atomic_set(&priv->opreq_count, 0);
2354 INIT_WORK(&priv->opreq_task, mlx4_opreq_action);
2355
2356 /*
2357 * Now reset the HCA before we touch the PCI capabilities or
2358 * attempt a firmware command, since a boot ROM may have left
2359 * the HCA in an undefined state.
2360 */
2361 err = mlx4_reset(dev);
2362 if (err) {
2363 mlx4_err(dev, "Failed to reset HCA, aborting\n");
2364 goto err_rel_own;
2365 }
2366 }
2367
2368 slave_start:
2369 err = mlx4_cmd_init(dev);
2370 if (err) {
2371 mlx4_err(dev, "Failed to init command interface, aborting\n");
2372 goto err_sriov;
2373 }
2374
2375 /* In slave functions, the communication channel must be initialized
2376 * before posting commands. Also, init num_slaves before calling
2377 * mlx4_init_hca */
2378 if (mlx4_is_mfunc(dev)) {
2379 if (mlx4_is_master(dev))
2380 dev->num_slaves = MLX4_MAX_NUM_SLAVES;
2381 else {
2382 dev->num_slaves = 0;
2383 err = mlx4_multi_func_init(dev);
2384 if (err) {
2385 mlx4_err(dev, "Failed to init slave mfunc interface, aborting\n");
2386 goto err_cmd;
2387 }
2388 }
2389 }
2390
2391 err = mlx4_init_hca(dev);
2392 if (err) {
2393 if (err == -EACCES) {
2394 /* Not primary Physical function
2395 * Running in slave mode */
2396 mlx4_cmd_cleanup(dev);
2397 dev->flags |= MLX4_FLAG_SLAVE;
2398 dev->flags &= ~MLX4_FLAG_MASTER;
2399 goto slave_start;
2400 } else
2401 goto err_mfunc;
2402 }
2403
2404 /* check if the device is functioning at its maximum possible speed.
2405 * No return code for this call, just warn the user in case of PCI
2406 * express device capabilities are under-satisfied by the bus.
2407 */
2408 if (!mlx4_is_slave(dev))
2409 mlx4_check_pcie_caps(dev);
2410
2411 /* In master functions, the communication channel must be initialized
2412 * after obtaining its address from fw */
2413 if (mlx4_is_master(dev)) {
2414 unsigned sum = 0;
2415 err = mlx4_multi_func_init(dev);
2416 if (err) {
2417 mlx4_err(dev, "Failed to init master mfunc interface, aborting\n");
2418 goto err_close;
2419 }
2420 if (sriov_initialized) {
2421 int ib_ports = 0;
2422 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
2423 ib_ports++;
2424
2425 if (ib_ports &&
2426 (num_vfs_argc > 1 || probe_vfs_argc > 1)) {
2427 mlx4_err(dev,
2428 "Invalid syntax of num_vfs/probe_vfs with IB port - single port VFs syntax is only supported when all ports are configured as ethernet\n");
2429 goto err_close;
2430 }
2431 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]); i++) {
2432 unsigned j;
2433 for (j = 0; j < nvfs[i]; ++sum, ++j) {
2434 dev->dev_vfs[sum].min_port =
2435 i < 2 ? i + 1 : 1;
2436 dev->dev_vfs[sum].n_ports = i < 2 ? 1 :
2437 dev->caps.num_ports;
2438 }
2439 }
2440 }
2441 }
2442
2443 err = mlx4_alloc_eq_table(dev);
2444 if (err)
2445 goto err_master_mfunc;
2446
2447 priv->msix_ctl.pool_bm = 0;
2448 mutex_init(&priv->msix_ctl.pool_lock);
2449
2450 mlx4_enable_msi_x(dev);
2451 if ((mlx4_is_mfunc(dev)) &&
2452 !(dev->flags & MLX4_FLAG_MSI_X)) {
2453 err = -ENOSYS;
2454 mlx4_err(dev, "INTx is not supported in multi-function mode, aborting\n");
2455 goto err_free_eq;
2456 }
2457
2458 if (!mlx4_is_slave(dev)) {
2459 err = mlx4_init_steering(dev);
2460 if (err)
2461 goto err_free_eq;
2462 }
2463
2464 err = mlx4_setup_hca(dev);
2465 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
2466 !mlx4_is_mfunc(dev)) {
2467 dev->flags &= ~MLX4_FLAG_MSI_X;
2468 dev->caps.num_comp_vectors = 1;
2469 dev->caps.comp_pool = 0;
2470 pci_disable_msix(pdev);
2471 err = mlx4_setup_hca(dev);
2472 }
2473
2474 if (err)
2475 goto err_steer;
2476
2477 mlx4_init_quotas(dev);
2478
2479 for (port = 1; port <= dev->caps.num_ports; port++) {
2480 err = mlx4_init_port_info(dev, port);
2481 if (err)
2482 goto err_port;
2483 }
2484
2485 err = mlx4_register_device(dev);
2486 if (err)
2487 goto err_port;
2488
2489 mlx4_request_modules(dev);
2490
2491 mlx4_sense_init(dev);
2492 mlx4_start_sense(dev);
2493
2494 priv->removed = 0;
2495
2496 if (mlx4_is_master(dev) && dev->num_vfs)
2497 atomic_dec(&pf_loading);
2498
2499 return 0;
2500
2501 err_port:
2502 for (--port; port >= 1; --port)
2503 mlx4_cleanup_port_info(&priv->port[port]);
2504
2505 mlx4_cleanup_counters_table(dev);
2506 mlx4_cleanup_qp_table(dev);
2507 mlx4_cleanup_srq_table(dev);
2508 mlx4_cleanup_cq_table(dev);
2509 mlx4_cmd_use_polling(dev);
2510 mlx4_cleanup_eq_table(dev);
2511 mlx4_cleanup_mcg_table(dev);
2512 mlx4_cleanup_mr_table(dev);
2513 mlx4_cleanup_xrcd_table(dev);
2514 mlx4_cleanup_pd_table(dev);
2515 mlx4_cleanup_uar_table(dev);
2516
2517 err_steer:
2518 if (!mlx4_is_slave(dev))
2519 mlx4_clear_steering(dev);
2520
2521 err_free_eq:
2522 mlx4_free_eq_table(dev);
2523
2524 err_master_mfunc:
2525 if (mlx4_is_master(dev))
2526 mlx4_multi_func_cleanup(dev);
2527
2528 err_close:
2529 if (dev->flags & MLX4_FLAG_MSI_X)
2530 pci_disable_msix(pdev);
2531
2532 mlx4_close_hca(dev);
2533
2534 err_mfunc:
2535 if (mlx4_is_slave(dev))
2536 mlx4_multi_func_cleanup(dev);
2537
2538 err_cmd:
2539 mlx4_cmd_cleanup(dev);
2540
2541 err_sriov:
2542 if (dev->flags & MLX4_FLAG_SRIOV)
2543 pci_disable_sriov(pdev);
2544
2545 err_rel_own:
2546 if (!mlx4_is_slave(dev))
2547 mlx4_free_ownership(dev);
2548
2549 if (mlx4_is_master(dev) && dev->num_vfs)
2550 atomic_dec(&pf_loading);
2551
2552 kfree(priv->dev.dev_vfs);
2553
2554 err_free_dev:
2555 kfree(priv);
2556
2557 err_release_regions:
2558 pci_release_regions(pdev);
2559
2560 err_disable_pdev:
2561 pci_disable_device(pdev);
2562 pci_set_drvdata(pdev, NULL);
2563 return err;
2564 }
2565
2566 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
2567 {
2568 struct mlx4_priv *priv;
2569 struct mlx4_dev *dev;
2570
2571 printk_once(KERN_INFO "%s", mlx4_version);
2572
2573 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2574 if (!priv)
2575 return -ENOMEM;
2576
2577 dev = &priv->dev;
2578 pci_set_drvdata(pdev, dev);
2579 priv->pci_dev_data = id->driver_data;
2580
2581 return __mlx4_init_one(pdev, id->driver_data);
2582 }
2583
2584 static void __mlx4_remove_one(struct pci_dev *pdev)
2585 {
2586 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2587 struct mlx4_priv *priv = mlx4_priv(dev);
2588 int pci_dev_data;
2589 int p;
2590
2591 if (priv->removed)
2592 return;
2593
2594 pci_dev_data = priv->pci_dev_data;
2595
2596 /* in SRIOV it is not allowed to unload the pf's
2597 * driver while there are alive vf's */
2598 if (mlx4_is_master(dev) && mlx4_how_many_lives_vf(dev))
2599 printk(KERN_ERR "Removing PF when there are assigned VF's !!!\n");
2600 mlx4_stop_sense(dev);
2601 mlx4_unregister_device(dev);
2602
2603 for (p = 1; p <= dev->caps.num_ports; p++) {
2604 mlx4_cleanup_port_info(&priv->port[p]);
2605 mlx4_CLOSE_PORT(dev, p);
2606 }
2607
2608 if (mlx4_is_master(dev))
2609 mlx4_free_resource_tracker(dev,
2610 RES_TR_FREE_SLAVES_ONLY);
2611
2612 mlx4_cleanup_counters_table(dev);
2613 mlx4_cleanup_qp_table(dev);
2614 mlx4_cleanup_srq_table(dev);
2615 mlx4_cleanup_cq_table(dev);
2616 mlx4_cmd_use_polling(dev);
2617 mlx4_cleanup_eq_table(dev);
2618 mlx4_cleanup_mcg_table(dev);
2619 mlx4_cleanup_mr_table(dev);
2620 mlx4_cleanup_xrcd_table(dev);
2621 mlx4_cleanup_pd_table(dev);
2622
2623 if (mlx4_is_master(dev))
2624 mlx4_free_resource_tracker(dev,
2625 RES_TR_FREE_STRUCTS_ONLY);
2626
2627 iounmap(priv->kar);
2628 mlx4_uar_free(dev, &priv->driver_uar);
2629 mlx4_cleanup_uar_table(dev);
2630 if (!mlx4_is_slave(dev))
2631 mlx4_clear_steering(dev);
2632 mlx4_free_eq_table(dev);
2633 if (mlx4_is_master(dev))
2634 mlx4_multi_func_cleanup(dev);
2635 mlx4_close_hca(dev);
2636 if (mlx4_is_slave(dev))
2637 mlx4_multi_func_cleanup(dev);
2638 mlx4_cmd_cleanup(dev);
2639
2640 if (dev->flags & MLX4_FLAG_MSI_X)
2641 pci_disable_msix(pdev);
2642 if (dev->flags & MLX4_FLAG_SRIOV) {
2643 mlx4_warn(dev, "Disabling SR-IOV\n");
2644 pci_disable_sriov(pdev);
2645 dev->num_vfs = 0;
2646 }
2647
2648 if (!mlx4_is_slave(dev))
2649 mlx4_free_ownership(dev);
2650
2651 kfree(dev->caps.qp0_tunnel);
2652 kfree(dev->caps.qp0_proxy);
2653 kfree(dev->caps.qp1_tunnel);
2654 kfree(dev->caps.qp1_proxy);
2655 kfree(dev->dev_vfs);
2656
2657 pci_release_regions(pdev);
2658 pci_disable_device(pdev);
2659 memset(priv, 0, sizeof(*priv));
2660 priv->pci_dev_data = pci_dev_data;
2661 priv->removed = 1;
2662 }
2663
2664 static void mlx4_remove_one(struct pci_dev *pdev)
2665 {
2666 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2667 struct mlx4_priv *priv = mlx4_priv(dev);
2668
2669 __mlx4_remove_one(pdev);
2670 kfree(priv);
2671 pci_set_drvdata(pdev, NULL);
2672 }
2673
2674 int mlx4_restart_one(struct pci_dev *pdev)
2675 {
2676 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2677 struct mlx4_priv *priv = mlx4_priv(dev);
2678 int pci_dev_data;
2679
2680 pci_dev_data = priv->pci_dev_data;
2681 __mlx4_remove_one(pdev);
2682 return __mlx4_init_one(pdev, pci_dev_data);
2683 }
2684
2685 static DEFINE_PCI_DEVICE_TABLE(mlx4_pci_table) = {
2686 /* MT25408 "Hermon" SDR */
2687 { PCI_VDEVICE(MELLANOX, 0x6340), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2688 /* MT25408 "Hermon" DDR */
2689 { PCI_VDEVICE(MELLANOX, 0x634a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2690 /* MT25408 "Hermon" QDR */
2691 { PCI_VDEVICE(MELLANOX, 0x6354), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2692 /* MT25408 "Hermon" DDR PCIe gen2 */
2693 { PCI_VDEVICE(MELLANOX, 0x6732), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2694 /* MT25408 "Hermon" QDR PCIe gen2 */
2695 { PCI_VDEVICE(MELLANOX, 0x673c), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2696 /* MT25408 "Hermon" EN 10GigE */
2697 { PCI_VDEVICE(MELLANOX, 0x6368), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2698 /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
2699 { PCI_VDEVICE(MELLANOX, 0x6750), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2700 /* MT25458 ConnectX EN 10GBASE-T 10GigE */
2701 { PCI_VDEVICE(MELLANOX, 0x6372), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2702 /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
2703 { PCI_VDEVICE(MELLANOX, 0x675a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2704 /* MT26468 ConnectX EN 10GigE PCIe gen2*/
2705 { PCI_VDEVICE(MELLANOX, 0x6764), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2706 /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */
2707 { PCI_VDEVICE(MELLANOX, 0x6746), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2708 /* MT26478 ConnectX2 40GigE PCIe gen2 */
2709 { PCI_VDEVICE(MELLANOX, 0x676e), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2710 /* MT25400 Family [ConnectX-2 Virtual Function] */
2711 { PCI_VDEVICE(MELLANOX, 0x1002), MLX4_PCI_DEV_IS_VF },
2712 /* MT27500 Family [ConnectX-3] */
2713 { PCI_VDEVICE(MELLANOX, 0x1003), 0 },
2714 /* MT27500 Family [ConnectX-3 Virtual Function] */
2715 { PCI_VDEVICE(MELLANOX, 0x1004), MLX4_PCI_DEV_IS_VF },
2716 { PCI_VDEVICE(MELLANOX, 0x1005), 0 }, /* MT27510 Family */
2717 { PCI_VDEVICE(MELLANOX, 0x1006), 0 }, /* MT27511 Family */
2718 { PCI_VDEVICE(MELLANOX, 0x1007), 0 }, /* MT27520 Family */
2719 { PCI_VDEVICE(MELLANOX, 0x1008), 0 }, /* MT27521 Family */
2720 { PCI_VDEVICE(MELLANOX, 0x1009), 0 }, /* MT27530 Family */
2721 { PCI_VDEVICE(MELLANOX, 0x100a), 0 }, /* MT27531 Family */
2722 { PCI_VDEVICE(MELLANOX, 0x100b), 0 }, /* MT27540 Family */
2723 { PCI_VDEVICE(MELLANOX, 0x100c), 0 }, /* MT27541 Family */
2724 { PCI_VDEVICE(MELLANOX, 0x100d), 0 }, /* MT27550 Family */
2725 { PCI_VDEVICE(MELLANOX, 0x100e), 0 }, /* MT27551 Family */
2726 { PCI_VDEVICE(MELLANOX, 0x100f), 0 }, /* MT27560 Family */
2727 { PCI_VDEVICE(MELLANOX, 0x1010), 0 }, /* MT27561 Family */
2728 { 0, }
2729 };
2730
2731 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
2732
2733 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
2734 pci_channel_state_t state)
2735 {
2736 __mlx4_remove_one(pdev);
2737
2738 return state == pci_channel_io_perm_failure ?
2739 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
2740 }
2741
2742 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
2743 {
2744 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2745 struct mlx4_priv *priv = mlx4_priv(dev);
2746 int ret;
2747
2748 ret = __mlx4_init_one(pdev, priv->pci_dev_data);
2749
2750 return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
2751 }
2752
2753 static const struct pci_error_handlers mlx4_err_handler = {
2754 .error_detected = mlx4_pci_err_detected,
2755 .slot_reset = mlx4_pci_slot_reset,
2756 };
2757
2758 static struct pci_driver mlx4_driver = {
2759 .name = DRV_NAME,
2760 .id_table = mlx4_pci_table,
2761 .probe = mlx4_init_one,
2762 .shutdown = mlx4_remove_one,
2763 .remove = mlx4_remove_one,
2764 .err_handler = &mlx4_err_handler,
2765 };
2766
2767 static int __init mlx4_verify_params(void)
2768 {
2769 if ((log_num_mac < 0) || (log_num_mac > 7)) {
2770 pr_warning("mlx4_core: bad num_mac: %d\n", log_num_mac);
2771 return -1;
2772 }
2773
2774 if (log_num_vlan != 0)
2775 pr_warning("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
2776 MLX4_LOG_NUM_VLANS);
2777
2778 if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
2779 pr_warning("mlx4_core: bad log_mtts_per_seg: %d\n", log_mtts_per_seg);
2780 return -1;
2781 }
2782
2783 /* Check if module param for ports type has legal combination */
2784 if (port_type_array[0] == false && port_type_array[1] == true) {
2785 printk(KERN_WARNING "Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
2786 port_type_array[0] = true;
2787 }
2788
2789 if (mlx4_log_num_mgm_entry_size != -1 &&
2790 (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE ||
2791 mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE)) {
2792 pr_warn("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not in legal range (-1 or %d..%d)\n",
2793 mlx4_log_num_mgm_entry_size,
2794 MLX4_MIN_MGM_LOG_ENTRY_SIZE,
2795 MLX4_MAX_MGM_LOG_ENTRY_SIZE);
2796 return -1;
2797 }
2798
2799 return 0;
2800 }
2801
2802 static int __init mlx4_init(void)
2803 {
2804 int ret;
2805
2806 if (mlx4_verify_params())
2807 return -EINVAL;
2808
2809 mlx4_catas_init();
2810
2811 mlx4_wq = create_singlethread_workqueue("mlx4");
2812 if (!mlx4_wq)
2813 return -ENOMEM;
2814
2815 ret = pci_register_driver(&mlx4_driver);
2816 if (ret < 0)
2817 destroy_workqueue(mlx4_wq);
2818 return ret < 0 ? ret : 0;
2819 }
2820
2821 static void __exit mlx4_cleanup(void)
2822 {
2823 pci_unregister_driver(&mlx4_driver);
2824 destroy_workqueue(mlx4_wq);
2825 }
2826
2827 module_init(mlx4_init);
2828 module_exit(mlx4_cleanup);
Linux kernel - Deliverables
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