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[mirror_ubuntu-zesty-kernel.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 struct mlx4_profile low_mem_profile = {
124 .num_qp = 1 << 17,
125 .num_srq = 1 << 6,
126 .rdmarc_per_qp = 1 << 4,
127 .num_cq = 1 << 8,
128 .num_mcg = 1 << 8,
129 .num_mpt = 1 << 9,
130 .num_mtt = 1 << 7,
131 };
132
133 static int log_num_mac = 7;
134 module_param_named(log_num_mac, log_num_mac, int, 0444);
135 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
136
137 static int log_num_vlan;
138 module_param_named(log_num_vlan, log_num_vlan, int, 0444);
139 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
140 /* Log2 max number of VLANs per ETH port (0-7) */
141 #define MLX4_LOG_NUM_VLANS 7
142 #define MLX4_MIN_LOG_NUM_VLANS 0
143 #define MLX4_MIN_LOG_NUM_MAC 1
144
145 static bool use_prio;
146 module_param_named(use_prio, use_prio, bool, 0444);
147 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports (deprecated)");
148
149 int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
150 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
151 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-7)");
152
153 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE};
154 static int arr_argc = 2;
155 module_param_array(port_type_array, int, &arr_argc, 0444);
156 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default "
157 "1 for IB, 2 for Ethernet");
158
159 struct mlx4_port_config {
160 struct list_head list;
161 enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
162 struct pci_dev *pdev;
163 };
164
165 static atomic_t pf_loading = ATOMIC_INIT(0);
166
167 int mlx4_check_port_params(struct mlx4_dev *dev,
168 enum mlx4_port_type *port_type)
169 {
170 int i;
171
172 for (i = 0; i < dev->caps.num_ports - 1; i++) {
173 if (port_type[i] != port_type[i + 1]) {
174 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
175 mlx4_err(dev, "Only same port types supported on this HCA, aborting\n");
176 return -EINVAL;
177 }
178 }
179 }
180
181 for (i = 0; i < dev->caps.num_ports; i++) {
182 if (!(port_type[i] & dev->caps.supported_type[i+1])) {
183 mlx4_err(dev, "Requested port type for port %d is not supported on this HCA\n",
184 i + 1);
185 return -EINVAL;
186 }
187 }
188 return 0;
189 }
190
191 static void mlx4_set_port_mask(struct mlx4_dev *dev)
192 {
193 int i;
194
195 for (i = 1; i <= dev->caps.num_ports; ++i)
196 dev->caps.port_mask[i] = dev->caps.port_type[i];
197 }
198
199 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
200 {
201 int err;
202 int i;
203
204 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
205 if (err) {
206 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
207 return err;
208 }
209
210 if (dev_cap->min_page_sz > PAGE_SIZE) {
211 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
212 dev_cap->min_page_sz, PAGE_SIZE);
213 return -ENODEV;
214 }
215 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
216 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
217 dev_cap->num_ports, MLX4_MAX_PORTS);
218 return -ENODEV;
219 }
220
221 if (dev_cap->uar_size > pci_resource_len(dev->pdev, 2)) {
222 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
223 dev_cap->uar_size,
224 (unsigned long long) pci_resource_len(dev->pdev, 2));
225 return -ENODEV;
226 }
227
228 dev->caps.num_ports = dev_cap->num_ports;
229 dev->phys_caps.num_phys_eqs = MLX4_MAX_EQ_NUM;
230 for (i = 1; i <= dev->caps.num_ports; ++i) {
231 dev->caps.vl_cap[i] = dev_cap->max_vl[i];
232 dev->caps.ib_mtu_cap[i] = dev_cap->ib_mtu[i];
233 dev->phys_caps.gid_phys_table_len[i] = dev_cap->max_gids[i];
234 dev->phys_caps.pkey_phys_table_len[i] = dev_cap->max_pkeys[i];
235 /* set gid and pkey table operating lengths by default
236 * to non-sriov values */
237 dev->caps.gid_table_len[i] = dev_cap->max_gids[i];
238 dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
239 dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
240 dev->caps.eth_mtu_cap[i] = dev_cap->eth_mtu[i];
241 dev->caps.def_mac[i] = dev_cap->def_mac[i];
242 dev->caps.supported_type[i] = dev_cap->supported_port_types[i];
243 dev->caps.suggested_type[i] = dev_cap->suggested_type[i];
244 dev->caps.default_sense[i] = dev_cap->default_sense[i];
245 dev->caps.trans_type[i] = dev_cap->trans_type[i];
246 dev->caps.vendor_oui[i] = dev_cap->vendor_oui[i];
247 dev->caps.wavelength[i] = dev_cap->wavelength[i];
248 dev->caps.trans_code[i] = dev_cap->trans_code[i];
249 }
250
251 dev->caps.uar_page_size = PAGE_SIZE;
252 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
253 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
254 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
255 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
256 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
257 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
258 dev->caps.max_wqes = dev_cap->max_qp_sz;
259 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
260 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
261 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
262 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
263 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
264 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
265 /*
266 * Subtract 1 from the limit because we need to allocate a
267 * spare CQE so the HCA HW can tell the difference between an
268 * empty CQ and a full CQ.
269 */
270 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
271 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
272 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
273 dev->caps.reserved_mtts = dev_cap->reserved_mtts;
274 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
275
276 /* The first 128 UARs are used for EQ doorbells */
277 dev->caps.reserved_uars = max_t(int, 128, dev_cap->reserved_uars);
278 dev->caps.reserved_pds = dev_cap->reserved_pds;
279 dev->caps.reserved_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
280 dev_cap->reserved_xrcds : 0;
281 dev->caps.max_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
282 dev_cap->max_xrcds : 0;
283 dev->caps.mtt_entry_sz = dev_cap->mtt_entry_sz;
284
285 dev->caps.max_msg_sz = dev_cap->max_msg_sz;
286 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
287 dev->caps.flags = dev_cap->flags;
288 dev->caps.flags2 = dev_cap->flags2;
289 dev->caps.bmme_flags = dev_cap->bmme_flags;
290 dev->caps.reserved_lkey = dev_cap->reserved_lkey;
291 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
292 dev->caps.max_gso_sz = dev_cap->max_gso_sz;
293 dev->caps.max_rss_tbl_sz = dev_cap->max_rss_tbl_sz;
294
295 /* Sense port always allowed on supported devices for ConnectX-1 and -2 */
296 if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT)
297 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
298 /* Don't do sense port on multifunction devices (for now at least) */
299 if (mlx4_is_mfunc(dev))
300 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
301
302 if (mlx4_low_memory_profile()) {
303 dev->caps.log_num_macs = MLX4_MIN_LOG_NUM_MAC;
304 dev->caps.log_num_vlans = MLX4_MIN_LOG_NUM_VLANS;
305 } else {
306 dev->caps.log_num_macs = log_num_mac;
307 dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
308 }
309
310 for (i = 1; i <= dev->caps.num_ports; ++i) {
311 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
312 if (dev->caps.supported_type[i]) {
313 /* if only ETH is supported - assign ETH */
314 if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH)
315 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
316 /* if only IB is supported, assign IB */
317 else if (dev->caps.supported_type[i] ==
318 MLX4_PORT_TYPE_IB)
319 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
320 else {
321 /* if IB and ETH are supported, we set the port
322 * type according to user selection of port type;
323 * if user selected none, take the FW hint */
324 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE)
325 dev->caps.port_type[i] = dev->caps.suggested_type[i] ?
326 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB;
327 else
328 dev->caps.port_type[i] = port_type_array[i - 1];
329 }
330 }
331 /*
332 * Link sensing is allowed on the port if 3 conditions are true:
333 * 1. Both protocols are supported on the port.
334 * 2. Different types are supported on the port
335 * 3. FW declared that it supports link sensing
336 */
337 mlx4_priv(dev)->sense.sense_allowed[i] =
338 ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) &&
339 (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
340 (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT));
341
342 /*
343 * If "default_sense" bit is set, we move the port to "AUTO" mode
344 * and perform sense_port FW command to try and set the correct
345 * port type from beginning
346 */
347 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) {
348 enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE;
349 dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO;
350 mlx4_SENSE_PORT(dev, i, &sensed_port);
351 if (sensed_port != MLX4_PORT_TYPE_NONE)
352 dev->caps.port_type[i] = sensed_port;
353 } else {
354 dev->caps.possible_type[i] = dev->caps.port_type[i];
355 }
356
357 if (dev->caps.log_num_macs > dev_cap->log_max_macs[i]) {
358 dev->caps.log_num_macs = dev_cap->log_max_macs[i];
359 mlx4_warn(dev, "Requested number of MACs is too much for port %d, reducing to %d\n",
360 i, 1 << dev->caps.log_num_macs);
361 }
362 if (dev->caps.log_num_vlans > dev_cap->log_max_vlans[i]) {
363 dev->caps.log_num_vlans = dev_cap->log_max_vlans[i];
364 mlx4_warn(dev, "Requested number of VLANs is too much for port %d, reducing to %d\n",
365 i, 1 << dev->caps.log_num_vlans);
366 }
367 }
368
369 dev->caps.max_counters = 1 << ilog2(dev_cap->max_counters);
370
371 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
372 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
373 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
374 (1 << dev->caps.log_num_macs) *
375 (1 << dev->caps.log_num_vlans) *
376 dev->caps.num_ports;
377 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
378
379 dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
380 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
381 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
382 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
383
384 dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
385
386 if (!enable_64b_cqe_eqe && !mlx4_is_slave(dev)) {
387 if (dev_cap->flags &
388 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) {
389 mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n");
390 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
391 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
392 }
393 }
394
395 if ((dev->caps.flags &
396 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) &&
397 mlx4_is_master(dev))
398 dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE;
399
400 return 0;
401 }
402
403 static int mlx4_get_pcie_dev_link_caps(struct mlx4_dev *dev,
404 enum pci_bus_speed *speed,
405 enum pcie_link_width *width)
406 {
407 u32 lnkcap1, lnkcap2;
408 int err1, err2;
409
410 #define PCIE_MLW_CAP_SHIFT 4 /* start of MLW mask in link capabilities */
411
412 *speed = PCI_SPEED_UNKNOWN;
413 *width = PCIE_LNK_WIDTH_UNKNOWN;
414
415 err1 = pcie_capability_read_dword(dev->pdev, PCI_EXP_LNKCAP, &lnkcap1);
416 err2 = pcie_capability_read_dword(dev->pdev, PCI_EXP_LNKCAP2, &lnkcap2);
417 if (!err2 && lnkcap2) { /* PCIe r3.0-compliant */
418 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
419 *speed = PCIE_SPEED_8_0GT;
420 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
421 *speed = PCIE_SPEED_5_0GT;
422 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
423 *speed = PCIE_SPEED_2_5GT;
424 }
425 if (!err1) {
426 *width = (lnkcap1 & PCI_EXP_LNKCAP_MLW) >> PCIE_MLW_CAP_SHIFT;
427 if (!lnkcap2) { /* pre-r3.0 */
428 if (lnkcap1 & PCI_EXP_LNKCAP_SLS_5_0GB)
429 *speed = PCIE_SPEED_5_0GT;
430 else if (lnkcap1 & PCI_EXP_LNKCAP_SLS_2_5GB)
431 *speed = PCIE_SPEED_2_5GT;
432 }
433 }
434
435 if (*speed == PCI_SPEED_UNKNOWN || *width == PCIE_LNK_WIDTH_UNKNOWN) {
436 return err1 ? err1 :
437 err2 ? err2 : -EINVAL;
438 }
439 return 0;
440 }
441
442 static void mlx4_check_pcie_caps(struct mlx4_dev *dev)
443 {
444 enum pcie_link_width width, width_cap;
445 enum pci_bus_speed speed, speed_cap;
446 int err;
447
448 #define PCIE_SPEED_STR(speed) \
449 (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" : \
450 speed == PCIE_SPEED_5_0GT ? "5.0GT/s" : \
451 speed == PCIE_SPEED_2_5GT ? "2.5GT/s" : \
452 "Unknown")
453
454 err = mlx4_get_pcie_dev_link_caps(dev, &speed_cap, &width_cap);
455 if (err) {
456 mlx4_warn(dev,
457 "Unable to determine PCIe device BW capabilities\n");
458 return;
459 }
460
461 err = pcie_get_minimum_link(dev->pdev, &speed, &width);
462 if (err || speed == PCI_SPEED_UNKNOWN ||
463 width == PCIE_LNK_WIDTH_UNKNOWN) {
464 mlx4_warn(dev,
465 "Unable to determine PCI device chain minimum BW\n");
466 return;
467 }
468
469 if (width != width_cap || speed != speed_cap)
470 mlx4_warn(dev,
471 "PCIe BW is different than device's capability\n");
472
473 mlx4_info(dev, "PCIe link speed is %s, device supports %s\n",
474 PCIE_SPEED_STR(speed), PCIE_SPEED_STR(speed_cap));
475 mlx4_info(dev, "PCIe link width is x%d, device supports x%d\n",
476 width, width_cap);
477 return;
478 }
479
480 /*The function checks if there are live vf, return the num of them*/
481 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
482 {
483 struct mlx4_priv *priv = mlx4_priv(dev);
484 struct mlx4_slave_state *s_state;
485 int i;
486 int ret = 0;
487
488 for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
489 s_state = &priv->mfunc.master.slave_state[i];
490 if (s_state->active && s_state->last_cmd !=
491 MLX4_COMM_CMD_RESET) {
492 mlx4_warn(dev, "%s: slave: %d is still active\n",
493 __func__, i);
494 ret++;
495 }
496 }
497 return ret;
498 }
499
500 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
501 {
502 u32 qk = MLX4_RESERVED_QKEY_BASE;
503
504 if (qpn >= dev->phys_caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
505 qpn < dev->phys_caps.base_proxy_sqpn)
506 return -EINVAL;
507
508 if (qpn >= dev->phys_caps.base_tunnel_sqpn)
509 /* tunnel qp */
510 qk += qpn - dev->phys_caps.base_tunnel_sqpn;
511 else
512 qk += qpn - dev->phys_caps.base_proxy_sqpn;
513 *qkey = qk;
514 return 0;
515 }
516 EXPORT_SYMBOL(mlx4_get_parav_qkey);
517
518 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val)
519 {
520 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
521
522 if (!mlx4_is_master(dev))
523 return;
524
525 priv->virt2phys_pkey[slave][port - 1][i] = val;
526 }
527 EXPORT_SYMBOL(mlx4_sync_pkey_table);
528
529 void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid)
530 {
531 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
532
533 if (!mlx4_is_master(dev))
534 return;
535
536 priv->slave_node_guids[slave] = guid;
537 }
538 EXPORT_SYMBOL(mlx4_put_slave_node_guid);
539
540 __be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave)
541 {
542 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
543
544 if (!mlx4_is_master(dev))
545 return 0;
546
547 return priv->slave_node_guids[slave];
548 }
549 EXPORT_SYMBOL(mlx4_get_slave_node_guid);
550
551 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
552 {
553 struct mlx4_priv *priv = mlx4_priv(dev);
554 struct mlx4_slave_state *s_slave;
555
556 if (!mlx4_is_master(dev))
557 return 0;
558
559 s_slave = &priv->mfunc.master.slave_state[slave];
560 return !!s_slave->active;
561 }
562 EXPORT_SYMBOL(mlx4_is_slave_active);
563
564 static void slave_adjust_steering_mode(struct mlx4_dev *dev,
565 struct mlx4_dev_cap *dev_cap,
566 struct mlx4_init_hca_param *hca_param)
567 {
568 dev->caps.steering_mode = hca_param->steering_mode;
569 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
570 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
571 dev->caps.fs_log_max_ucast_qp_range_size =
572 dev_cap->fs_log_max_ucast_qp_range_size;
573 } else
574 dev->caps.num_qp_per_mgm =
575 4 * ((1 << hca_param->log_mc_entry_sz)/16 - 2);
576
577 mlx4_dbg(dev, "Steering mode is: %s\n",
578 mlx4_steering_mode_str(dev->caps.steering_mode));
579 }
580
581 static int mlx4_slave_cap(struct mlx4_dev *dev)
582 {
583 int err;
584 u32 page_size;
585 struct mlx4_dev_cap dev_cap;
586 struct mlx4_func_cap func_cap;
587 struct mlx4_init_hca_param hca_param;
588 int i;
589
590 memset(&hca_param, 0, sizeof(hca_param));
591 err = mlx4_QUERY_HCA(dev, &hca_param);
592 if (err) {
593 mlx4_err(dev, "QUERY_HCA command failed, aborting\n");
594 return err;
595 }
596
597 /* fail if the hca has an unknown global capability
598 * at this time global_caps should be always zeroed
599 */
600 if (hca_param.global_caps) {
601 mlx4_err(dev, "Unknown hca global capabilities\n");
602 return -ENOSYS;
603 }
604
605 mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
606
607 dev->caps.hca_core_clock = hca_param.hca_core_clock;
608
609 memset(&dev_cap, 0, sizeof(dev_cap));
610 dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
611 err = mlx4_dev_cap(dev, &dev_cap);
612 if (err) {
613 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
614 return err;
615 }
616
617 err = mlx4_QUERY_FW(dev);
618 if (err)
619 mlx4_err(dev, "QUERY_FW command failed: could not get FW version\n");
620
621 page_size = ~dev->caps.page_size_cap + 1;
622 mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
623 if (page_size > PAGE_SIZE) {
624 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
625 page_size, PAGE_SIZE);
626 return -ENODEV;
627 }
628
629 /* slave gets uar page size from QUERY_HCA fw command */
630 dev->caps.uar_page_size = 1 << (hca_param.uar_page_sz + 12);
631
632 /* TODO: relax this assumption */
633 if (dev->caps.uar_page_size != PAGE_SIZE) {
634 mlx4_err(dev, "UAR size:%d != kernel PAGE_SIZE of %ld\n",
635 dev->caps.uar_page_size, PAGE_SIZE);
636 return -ENODEV;
637 }
638
639 memset(&func_cap, 0, sizeof(func_cap));
640 err = mlx4_QUERY_FUNC_CAP(dev, 0, &func_cap);
641 if (err) {
642 mlx4_err(dev, "QUERY_FUNC_CAP general command failed, aborting (%d)\n",
643 err);
644 return err;
645 }
646
647 if ((func_cap.pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
648 PF_CONTEXT_BEHAVIOUR_MASK) {
649 mlx4_err(dev, "Unknown pf context behaviour\n");
650 return -ENOSYS;
651 }
652
653 dev->caps.num_ports = func_cap.num_ports;
654 dev->quotas.qp = func_cap.qp_quota;
655 dev->quotas.srq = func_cap.srq_quota;
656 dev->quotas.cq = func_cap.cq_quota;
657 dev->quotas.mpt = func_cap.mpt_quota;
658 dev->quotas.mtt = func_cap.mtt_quota;
659 dev->caps.num_qps = 1 << hca_param.log_num_qps;
660 dev->caps.num_srqs = 1 << hca_param.log_num_srqs;
661 dev->caps.num_cqs = 1 << hca_param.log_num_cqs;
662 dev->caps.num_mpts = 1 << hca_param.log_mpt_sz;
663 dev->caps.num_eqs = func_cap.max_eq;
664 dev->caps.reserved_eqs = func_cap.reserved_eq;
665 dev->caps.num_pds = MLX4_NUM_PDS;
666 dev->caps.num_mgms = 0;
667 dev->caps.num_amgms = 0;
668
669 if (dev->caps.num_ports > MLX4_MAX_PORTS) {
670 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
671 dev->caps.num_ports, MLX4_MAX_PORTS);
672 return -ENODEV;
673 }
674
675 dev->caps.qp0_qkey = kcalloc(dev->caps.num_ports, sizeof(u32), GFP_KERNEL);
676 dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
677 dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
678 dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
679 dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
680
681 if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy ||
682 !dev->caps.qp1_tunnel || !dev->caps.qp1_proxy ||
683 !dev->caps.qp0_qkey) {
684 err = -ENOMEM;
685 goto err_mem;
686 }
687
688 for (i = 1; i <= dev->caps.num_ports; ++i) {
689 err = mlx4_QUERY_FUNC_CAP(dev, (u32) i, &func_cap);
690 if (err) {
691 mlx4_err(dev, "QUERY_FUNC_CAP port command failed for port %d, aborting (%d)\n",
692 i, err);
693 goto err_mem;
694 }
695 dev->caps.qp0_qkey[i - 1] = func_cap.qp0_qkey;
696 dev->caps.qp0_tunnel[i - 1] = func_cap.qp0_tunnel_qpn;
697 dev->caps.qp0_proxy[i - 1] = func_cap.qp0_proxy_qpn;
698 dev->caps.qp1_tunnel[i - 1] = func_cap.qp1_tunnel_qpn;
699 dev->caps.qp1_proxy[i - 1] = func_cap.qp1_proxy_qpn;
700 dev->caps.port_mask[i] = dev->caps.port_type[i];
701 dev->caps.phys_port_id[i] = func_cap.phys_port_id;
702 if (mlx4_get_slave_pkey_gid_tbl_len(dev, i,
703 &dev->caps.gid_table_len[i],
704 &dev->caps.pkey_table_len[i]))
705 goto err_mem;
706 }
707
708 if (dev->caps.uar_page_size * (dev->caps.num_uars -
709 dev->caps.reserved_uars) >
710 pci_resource_len(dev->pdev, 2)) {
711 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
712 dev->caps.uar_page_size * dev->caps.num_uars,
713 (unsigned long long) pci_resource_len(dev->pdev, 2));
714 goto err_mem;
715 }
716
717 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) {
718 dev->caps.eqe_size = 64;
719 dev->caps.eqe_factor = 1;
720 } else {
721 dev->caps.eqe_size = 32;
722 dev->caps.eqe_factor = 0;
723 }
724
725 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) {
726 dev->caps.cqe_size = 64;
727 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_64B_CQE;
728 } else {
729 dev->caps.cqe_size = 32;
730 }
731
732 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
733 mlx4_warn(dev, "Timestamping is not supported in slave mode\n");
734
735 slave_adjust_steering_mode(dev, &dev_cap, &hca_param);
736
737 return 0;
738
739 err_mem:
740 kfree(dev->caps.qp0_qkey);
741 kfree(dev->caps.qp0_tunnel);
742 kfree(dev->caps.qp0_proxy);
743 kfree(dev->caps.qp1_tunnel);
744 kfree(dev->caps.qp1_proxy);
745 dev->caps.qp0_qkey = NULL;
746 dev->caps.qp0_tunnel = NULL;
747 dev->caps.qp0_proxy = NULL;
748 dev->caps.qp1_tunnel = NULL;
749 dev->caps.qp1_proxy = NULL;
750
751 return err;
752 }
753
754 static void mlx4_request_modules(struct mlx4_dev *dev)
755 {
756 int port;
757 int has_ib_port = false;
758 int has_eth_port = false;
759 #define EN_DRV_NAME "mlx4_en"
760 #define IB_DRV_NAME "mlx4_ib"
761
762 for (port = 1; port <= dev->caps.num_ports; port++) {
763 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
764 has_ib_port = true;
765 else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
766 has_eth_port = true;
767 }
768
769 if (has_eth_port)
770 request_module_nowait(EN_DRV_NAME);
771 if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
772 request_module_nowait(IB_DRV_NAME);
773 }
774
775 /*
776 * Change the port configuration of the device.
777 * Every user of this function must hold the port mutex.
778 */
779 int mlx4_change_port_types(struct mlx4_dev *dev,
780 enum mlx4_port_type *port_types)
781 {
782 int err = 0;
783 int change = 0;
784 int port;
785
786 for (port = 0; port < dev->caps.num_ports; port++) {
787 /* Change the port type only if the new type is different
788 * from the current, and not set to Auto */
789 if (port_types[port] != dev->caps.port_type[port + 1])
790 change = 1;
791 }
792 if (change) {
793 mlx4_unregister_device(dev);
794 for (port = 1; port <= dev->caps.num_ports; port++) {
795 mlx4_CLOSE_PORT(dev, port);
796 dev->caps.port_type[port] = port_types[port - 1];
797 err = mlx4_SET_PORT(dev, port, -1);
798 if (err) {
799 mlx4_err(dev, "Failed to set port %d, aborting\n",
800 port);
801 goto out;
802 }
803 }
804 mlx4_set_port_mask(dev);
805 err = mlx4_register_device(dev);
806 if (err) {
807 mlx4_err(dev, "Failed to register device\n");
808 goto out;
809 }
810 mlx4_request_modules(dev);
811 }
812
813 out:
814 return err;
815 }
816
817 static ssize_t show_port_type(struct device *dev,
818 struct device_attribute *attr,
819 char *buf)
820 {
821 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
822 port_attr);
823 struct mlx4_dev *mdev = info->dev;
824 char type[8];
825
826 sprintf(type, "%s",
827 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
828 "ib" : "eth");
829 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
830 sprintf(buf, "auto (%s)\n", type);
831 else
832 sprintf(buf, "%s\n", type);
833
834 return strlen(buf);
835 }
836
837 static ssize_t set_port_type(struct device *dev,
838 struct device_attribute *attr,
839 const char *buf, size_t count)
840 {
841 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
842 port_attr);
843 struct mlx4_dev *mdev = info->dev;
844 struct mlx4_priv *priv = mlx4_priv(mdev);
845 enum mlx4_port_type types[MLX4_MAX_PORTS];
846 enum mlx4_port_type new_types[MLX4_MAX_PORTS];
847 int i;
848 int err = 0;
849
850 if (!strcmp(buf, "ib\n"))
851 info->tmp_type = MLX4_PORT_TYPE_IB;
852 else if (!strcmp(buf, "eth\n"))
853 info->tmp_type = MLX4_PORT_TYPE_ETH;
854 else if (!strcmp(buf, "auto\n"))
855 info->tmp_type = MLX4_PORT_TYPE_AUTO;
856 else {
857 mlx4_err(mdev, "%s is not supported port type\n", buf);
858 return -EINVAL;
859 }
860
861 mlx4_stop_sense(mdev);
862 mutex_lock(&priv->port_mutex);
863 /* Possible type is always the one that was delivered */
864 mdev->caps.possible_type[info->port] = info->tmp_type;
865
866 for (i = 0; i < mdev->caps.num_ports; i++) {
867 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
868 mdev->caps.possible_type[i+1];
869 if (types[i] == MLX4_PORT_TYPE_AUTO)
870 types[i] = mdev->caps.port_type[i+1];
871 }
872
873 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
874 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
875 for (i = 1; i <= mdev->caps.num_ports; i++) {
876 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
877 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
878 err = -EINVAL;
879 }
880 }
881 }
882 if (err) {
883 mlx4_err(mdev, "Auto sensing is not supported on this HCA. Set only 'eth' or 'ib' for both ports (should be the same)\n");
884 goto out;
885 }
886
887 mlx4_do_sense_ports(mdev, new_types, types);
888
889 err = mlx4_check_port_params(mdev, new_types);
890 if (err)
891 goto out;
892
893 /* We are about to apply the changes after the configuration
894 * was verified, no need to remember the temporary types
895 * any more */
896 for (i = 0; i < mdev->caps.num_ports; i++)
897 priv->port[i + 1].tmp_type = 0;
898
899 err = mlx4_change_port_types(mdev, new_types);
900
901 out:
902 mlx4_start_sense(mdev);
903 mutex_unlock(&priv->port_mutex);
904 return err ? err : count;
905 }
906
907 enum ibta_mtu {
908 IB_MTU_256 = 1,
909 IB_MTU_512 = 2,
910 IB_MTU_1024 = 3,
911 IB_MTU_2048 = 4,
912 IB_MTU_4096 = 5
913 };
914
915 static inline int int_to_ibta_mtu(int mtu)
916 {
917 switch (mtu) {
918 case 256: return IB_MTU_256;
919 case 512: return IB_MTU_512;
920 case 1024: return IB_MTU_1024;
921 case 2048: return IB_MTU_2048;
922 case 4096: return IB_MTU_4096;
923 default: return -1;
924 }
925 }
926
927 static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
928 {
929 switch (mtu) {
930 case IB_MTU_256: return 256;
931 case IB_MTU_512: return 512;
932 case IB_MTU_1024: return 1024;
933 case IB_MTU_2048: return 2048;
934 case IB_MTU_4096: return 4096;
935 default: return -1;
936 }
937 }
938
939 static ssize_t show_port_ib_mtu(struct device *dev,
940 struct device_attribute *attr,
941 char *buf)
942 {
943 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
944 port_mtu_attr);
945 struct mlx4_dev *mdev = info->dev;
946
947 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
948 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
949
950 sprintf(buf, "%d\n",
951 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
952 return strlen(buf);
953 }
954
955 static ssize_t set_port_ib_mtu(struct device *dev,
956 struct device_attribute *attr,
957 const char *buf, size_t count)
958 {
959 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
960 port_mtu_attr);
961 struct mlx4_dev *mdev = info->dev;
962 struct mlx4_priv *priv = mlx4_priv(mdev);
963 int err, port, mtu, ibta_mtu = -1;
964
965 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
966 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
967 return -EINVAL;
968 }
969
970 err = kstrtoint(buf, 0, &mtu);
971 if (!err)
972 ibta_mtu = int_to_ibta_mtu(mtu);
973
974 if (err || ibta_mtu < 0) {
975 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
976 return -EINVAL;
977 }
978
979 mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
980
981 mlx4_stop_sense(mdev);
982 mutex_lock(&priv->port_mutex);
983 mlx4_unregister_device(mdev);
984 for (port = 1; port <= mdev->caps.num_ports; port++) {
985 mlx4_CLOSE_PORT(mdev, port);
986 err = mlx4_SET_PORT(mdev, port, -1);
987 if (err) {
988 mlx4_err(mdev, "Failed to set port %d, aborting\n",
989 port);
990 goto err_set_port;
991 }
992 }
993 err = mlx4_register_device(mdev);
994 err_set_port:
995 mutex_unlock(&priv->port_mutex);
996 mlx4_start_sense(mdev);
997 return err ? err : count;
998 }
999
1000 static int mlx4_load_fw(struct mlx4_dev *dev)
1001 {
1002 struct mlx4_priv *priv = mlx4_priv(dev);
1003 int err;
1004
1005 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
1006 GFP_HIGHUSER | __GFP_NOWARN, 0);
1007 if (!priv->fw.fw_icm) {
1008 mlx4_err(dev, "Couldn't allocate FW area, aborting\n");
1009 return -ENOMEM;
1010 }
1011
1012 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
1013 if (err) {
1014 mlx4_err(dev, "MAP_FA command failed, aborting\n");
1015 goto err_free;
1016 }
1017
1018 err = mlx4_RUN_FW(dev);
1019 if (err) {
1020 mlx4_err(dev, "RUN_FW command failed, aborting\n");
1021 goto err_unmap_fa;
1022 }
1023
1024 return 0;
1025
1026 err_unmap_fa:
1027 mlx4_UNMAP_FA(dev);
1028
1029 err_free:
1030 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1031 return err;
1032 }
1033
1034 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
1035 int cmpt_entry_sz)
1036 {
1037 struct mlx4_priv *priv = mlx4_priv(dev);
1038 int err;
1039 int num_eqs;
1040
1041 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
1042 cmpt_base +
1043 ((u64) (MLX4_CMPT_TYPE_QP *
1044 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1045 cmpt_entry_sz, dev->caps.num_qps,
1046 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1047 0, 0);
1048 if (err)
1049 goto err;
1050
1051 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
1052 cmpt_base +
1053 ((u64) (MLX4_CMPT_TYPE_SRQ *
1054 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1055 cmpt_entry_sz, dev->caps.num_srqs,
1056 dev->caps.reserved_srqs, 0, 0);
1057 if (err)
1058 goto err_qp;
1059
1060 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
1061 cmpt_base +
1062 ((u64) (MLX4_CMPT_TYPE_CQ *
1063 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1064 cmpt_entry_sz, dev->caps.num_cqs,
1065 dev->caps.reserved_cqs, 0, 0);
1066 if (err)
1067 goto err_srq;
1068
1069 num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
1070 dev->caps.num_eqs;
1071 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
1072 cmpt_base +
1073 ((u64) (MLX4_CMPT_TYPE_EQ *
1074 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1075 cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
1076 if (err)
1077 goto err_cq;
1078
1079 return 0;
1080
1081 err_cq:
1082 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1083
1084 err_srq:
1085 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1086
1087 err_qp:
1088 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1089
1090 err:
1091 return err;
1092 }
1093
1094 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
1095 struct mlx4_init_hca_param *init_hca, u64 icm_size)
1096 {
1097 struct mlx4_priv *priv = mlx4_priv(dev);
1098 u64 aux_pages;
1099 int num_eqs;
1100 int err;
1101
1102 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
1103 if (err) {
1104 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting\n");
1105 return err;
1106 }
1107
1108 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory\n",
1109 (unsigned long long) icm_size >> 10,
1110 (unsigned long long) aux_pages << 2);
1111
1112 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
1113 GFP_HIGHUSER | __GFP_NOWARN, 0);
1114 if (!priv->fw.aux_icm) {
1115 mlx4_err(dev, "Couldn't allocate aux memory, aborting\n");
1116 return -ENOMEM;
1117 }
1118
1119 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
1120 if (err) {
1121 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting\n");
1122 goto err_free_aux;
1123 }
1124
1125 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
1126 if (err) {
1127 mlx4_err(dev, "Failed to map cMPT context memory, aborting\n");
1128 goto err_unmap_aux;
1129 }
1130
1131
1132 num_eqs = (mlx4_is_master(dev)) ? dev->phys_caps.num_phys_eqs :
1133 dev->caps.num_eqs;
1134 err = mlx4_init_icm_table(dev, &priv->eq_table.table,
1135 init_hca->eqc_base, dev_cap->eqc_entry_sz,
1136 num_eqs, num_eqs, 0, 0);
1137 if (err) {
1138 mlx4_err(dev, "Failed to map EQ context memory, aborting\n");
1139 goto err_unmap_cmpt;
1140 }
1141
1142 /*
1143 * Reserved MTT entries must be aligned up to a cacheline
1144 * boundary, since the FW will write to them, while the driver
1145 * writes to all other MTT entries. (The variable
1146 * dev->caps.mtt_entry_sz below is really the MTT segment
1147 * size, not the raw entry size)
1148 */
1149 dev->caps.reserved_mtts =
1150 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
1151 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
1152
1153 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
1154 init_hca->mtt_base,
1155 dev->caps.mtt_entry_sz,
1156 dev->caps.num_mtts,
1157 dev->caps.reserved_mtts, 1, 0);
1158 if (err) {
1159 mlx4_err(dev, "Failed to map MTT context memory, aborting\n");
1160 goto err_unmap_eq;
1161 }
1162
1163 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
1164 init_hca->dmpt_base,
1165 dev_cap->dmpt_entry_sz,
1166 dev->caps.num_mpts,
1167 dev->caps.reserved_mrws, 1, 1);
1168 if (err) {
1169 mlx4_err(dev, "Failed to map dMPT context memory, aborting\n");
1170 goto err_unmap_mtt;
1171 }
1172
1173 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
1174 init_hca->qpc_base,
1175 dev_cap->qpc_entry_sz,
1176 dev->caps.num_qps,
1177 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1178 0, 0);
1179 if (err) {
1180 mlx4_err(dev, "Failed to map QP context memory, aborting\n");
1181 goto err_unmap_dmpt;
1182 }
1183
1184 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
1185 init_hca->auxc_base,
1186 dev_cap->aux_entry_sz,
1187 dev->caps.num_qps,
1188 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1189 0, 0);
1190 if (err) {
1191 mlx4_err(dev, "Failed to map AUXC context memory, aborting\n");
1192 goto err_unmap_qp;
1193 }
1194
1195 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
1196 init_hca->altc_base,
1197 dev_cap->altc_entry_sz,
1198 dev->caps.num_qps,
1199 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1200 0, 0);
1201 if (err) {
1202 mlx4_err(dev, "Failed to map ALTC context memory, aborting\n");
1203 goto err_unmap_auxc;
1204 }
1205
1206 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
1207 init_hca->rdmarc_base,
1208 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
1209 dev->caps.num_qps,
1210 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1211 0, 0);
1212 if (err) {
1213 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
1214 goto err_unmap_altc;
1215 }
1216
1217 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
1218 init_hca->cqc_base,
1219 dev_cap->cqc_entry_sz,
1220 dev->caps.num_cqs,
1221 dev->caps.reserved_cqs, 0, 0);
1222 if (err) {
1223 mlx4_err(dev, "Failed to map CQ context memory, aborting\n");
1224 goto err_unmap_rdmarc;
1225 }
1226
1227 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
1228 init_hca->srqc_base,
1229 dev_cap->srq_entry_sz,
1230 dev->caps.num_srqs,
1231 dev->caps.reserved_srqs, 0, 0);
1232 if (err) {
1233 mlx4_err(dev, "Failed to map SRQ context memory, aborting\n");
1234 goto err_unmap_cq;
1235 }
1236
1237 /*
1238 * For flow steering device managed mode it is required to use
1239 * mlx4_init_icm_table. For B0 steering mode it's not strictly
1240 * required, but for simplicity just map the whole multicast
1241 * group table now. The table isn't very big and it's a lot
1242 * easier than trying to track ref counts.
1243 */
1244 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1245 init_hca->mc_base,
1246 mlx4_get_mgm_entry_size(dev),
1247 dev->caps.num_mgms + dev->caps.num_amgms,
1248 dev->caps.num_mgms + dev->caps.num_amgms,
1249 0, 0);
1250 if (err) {
1251 mlx4_err(dev, "Failed to map MCG context memory, aborting\n");
1252 goto err_unmap_srq;
1253 }
1254
1255 return 0;
1256
1257 err_unmap_srq:
1258 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1259
1260 err_unmap_cq:
1261 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1262
1263 err_unmap_rdmarc:
1264 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1265
1266 err_unmap_altc:
1267 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1268
1269 err_unmap_auxc:
1270 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1271
1272 err_unmap_qp:
1273 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1274
1275 err_unmap_dmpt:
1276 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1277
1278 err_unmap_mtt:
1279 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1280
1281 err_unmap_eq:
1282 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1283
1284 err_unmap_cmpt:
1285 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1286 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1287 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1288 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1289
1290 err_unmap_aux:
1291 mlx4_UNMAP_ICM_AUX(dev);
1292
1293 err_free_aux:
1294 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1295
1296 return err;
1297 }
1298
1299 static void mlx4_free_icms(struct mlx4_dev *dev)
1300 {
1301 struct mlx4_priv *priv = mlx4_priv(dev);
1302
1303 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1304 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1305 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1306 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1307 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1308 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1309 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1310 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1311 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1312 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1313 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1314 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1315 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1316 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1317
1318 mlx4_UNMAP_ICM_AUX(dev);
1319 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1320 }
1321
1322 static void mlx4_slave_exit(struct mlx4_dev *dev)
1323 {
1324 struct mlx4_priv *priv = mlx4_priv(dev);
1325
1326 mutex_lock(&priv->cmd.slave_cmd_mutex);
1327 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_TIME))
1328 mlx4_warn(dev, "Failed to close slave function\n");
1329 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1330 }
1331
1332 static int map_bf_area(struct mlx4_dev *dev)
1333 {
1334 struct mlx4_priv *priv = mlx4_priv(dev);
1335 resource_size_t bf_start;
1336 resource_size_t bf_len;
1337 int err = 0;
1338
1339 if (!dev->caps.bf_reg_size)
1340 return -ENXIO;
1341
1342 bf_start = pci_resource_start(dev->pdev, 2) +
1343 (dev->caps.num_uars << PAGE_SHIFT);
1344 bf_len = pci_resource_len(dev->pdev, 2) -
1345 (dev->caps.num_uars << PAGE_SHIFT);
1346 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1347 if (!priv->bf_mapping)
1348 err = -ENOMEM;
1349
1350 return err;
1351 }
1352
1353 static void unmap_bf_area(struct mlx4_dev *dev)
1354 {
1355 if (mlx4_priv(dev)->bf_mapping)
1356 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1357 }
1358
1359 cycle_t mlx4_read_clock(struct mlx4_dev *dev)
1360 {
1361 u32 clockhi, clocklo, clockhi1;
1362 cycle_t cycles;
1363 int i;
1364 struct mlx4_priv *priv = mlx4_priv(dev);
1365
1366 for (i = 0; i < 10; i++) {
1367 clockhi = swab32(readl(priv->clock_mapping));
1368 clocklo = swab32(readl(priv->clock_mapping + 4));
1369 clockhi1 = swab32(readl(priv->clock_mapping));
1370 if (clockhi == clockhi1)
1371 break;
1372 }
1373
1374 cycles = (u64) clockhi << 32 | (u64) clocklo;
1375
1376 return cycles;
1377 }
1378 EXPORT_SYMBOL_GPL(mlx4_read_clock);
1379
1380
1381 static int map_internal_clock(struct mlx4_dev *dev)
1382 {
1383 struct mlx4_priv *priv = mlx4_priv(dev);
1384
1385 priv->clock_mapping =
1386 ioremap(pci_resource_start(dev->pdev, priv->fw.clock_bar) +
1387 priv->fw.clock_offset, MLX4_CLOCK_SIZE);
1388
1389 if (!priv->clock_mapping)
1390 return -ENOMEM;
1391
1392 return 0;
1393 }
1394
1395 static void unmap_internal_clock(struct mlx4_dev *dev)
1396 {
1397 struct mlx4_priv *priv = mlx4_priv(dev);
1398
1399 if (priv->clock_mapping)
1400 iounmap(priv->clock_mapping);
1401 }
1402
1403 static void mlx4_close_hca(struct mlx4_dev *dev)
1404 {
1405 unmap_internal_clock(dev);
1406 unmap_bf_area(dev);
1407 if (mlx4_is_slave(dev))
1408 mlx4_slave_exit(dev);
1409 else {
1410 mlx4_CLOSE_HCA(dev, 0);
1411 mlx4_free_icms(dev);
1412 mlx4_UNMAP_FA(dev);
1413 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1414 }
1415 }
1416
1417 static int mlx4_init_slave(struct mlx4_dev *dev)
1418 {
1419 struct mlx4_priv *priv = mlx4_priv(dev);
1420 u64 dma = (u64) priv->mfunc.vhcr_dma;
1421 int ret_from_reset = 0;
1422 u32 slave_read;
1423 u32 cmd_channel_ver;
1424
1425 if (atomic_read(&pf_loading)) {
1426 mlx4_warn(dev, "PF is not ready - Deferring probe\n");
1427 return -EPROBE_DEFER;
1428 }
1429
1430 mutex_lock(&priv->cmd.slave_cmd_mutex);
1431 priv->cmd.max_cmds = 1;
1432 mlx4_warn(dev, "Sending reset\n");
1433 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
1434 MLX4_COMM_TIME);
1435 /* if we are in the middle of flr the slave will try
1436 * NUM_OF_RESET_RETRIES times before leaving.*/
1437 if (ret_from_reset) {
1438 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
1439 mlx4_warn(dev, "slave is currently in the middle of FLR - Deferring probe\n");
1440 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1441 return -EPROBE_DEFER;
1442 } else
1443 goto err;
1444 }
1445
1446 /* check the driver version - the slave I/F revision
1447 * must match the master's */
1448 slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
1449 cmd_channel_ver = mlx4_comm_get_version();
1450
1451 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
1452 MLX4_COMM_GET_IF_REV(slave_read)) {
1453 mlx4_err(dev, "slave driver version is not supported by the master\n");
1454 goto err;
1455 }
1456
1457 mlx4_warn(dev, "Sending vhcr0\n");
1458 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
1459 MLX4_COMM_TIME))
1460 goto err;
1461 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
1462 MLX4_COMM_TIME))
1463 goto err;
1464 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
1465 MLX4_COMM_TIME))
1466 goto err;
1467 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma, MLX4_COMM_TIME))
1468 goto err;
1469
1470 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1471 return 0;
1472
1473 err:
1474 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, 0);
1475 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1476 return -EIO;
1477 }
1478
1479 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
1480 {
1481 int i;
1482
1483 for (i = 1; i <= dev->caps.num_ports; i++) {
1484 if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
1485 dev->caps.gid_table_len[i] =
1486 mlx4_get_slave_num_gids(dev, 0, i);
1487 else
1488 dev->caps.gid_table_len[i] = 1;
1489 dev->caps.pkey_table_len[i] =
1490 dev->phys_caps.pkey_phys_table_len[i] - 1;
1491 }
1492 }
1493
1494 static int choose_log_fs_mgm_entry_size(int qp_per_entry)
1495 {
1496 int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE;
1497
1498 for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE;
1499 i++) {
1500 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2))
1501 break;
1502 }
1503
1504 return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1;
1505 }
1506
1507 static void choose_steering_mode(struct mlx4_dev *dev,
1508 struct mlx4_dev_cap *dev_cap)
1509 {
1510 if (mlx4_log_num_mgm_entry_size == -1 &&
1511 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN &&
1512 (!mlx4_is_mfunc(dev) ||
1513 (dev_cap->fs_max_num_qp_per_entry >= (dev->num_vfs + 1))) &&
1514 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >=
1515 MLX4_MIN_MGM_LOG_ENTRY_SIZE) {
1516 dev->oper_log_mgm_entry_size =
1517 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry);
1518 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
1519 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
1520 dev->caps.fs_log_max_ucast_qp_range_size =
1521 dev_cap->fs_log_max_ucast_qp_range_size;
1522 } else {
1523 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER &&
1524 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1525 dev->caps.steering_mode = MLX4_STEERING_MODE_B0;
1526 else {
1527 dev->caps.steering_mode = MLX4_STEERING_MODE_A0;
1528
1529 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER ||
1530 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1531 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags set to use B0 steering - falling back to A0 steering mode\n");
1532 }
1533 dev->oper_log_mgm_entry_size =
1534 mlx4_log_num_mgm_entry_size > 0 ?
1535 mlx4_log_num_mgm_entry_size :
1536 MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
1537 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev);
1538 }
1539 mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, modparam log_num_mgm_entry_size = %d\n",
1540 mlx4_steering_mode_str(dev->caps.steering_mode),
1541 dev->oper_log_mgm_entry_size,
1542 mlx4_log_num_mgm_entry_size);
1543 }
1544
1545 static void choose_tunnel_offload_mode(struct mlx4_dev *dev,
1546 struct mlx4_dev_cap *dev_cap)
1547 {
1548 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED &&
1549 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
1550 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_VXLAN;
1551 else
1552 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_NONE;
1553
1554 mlx4_dbg(dev, "Tunneling offload mode is: %s\n", (dev->caps.tunnel_offload_mode
1555 == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) ? "vxlan" : "none");
1556 }
1557
1558 static int mlx4_init_hca(struct mlx4_dev *dev)
1559 {
1560 struct mlx4_priv *priv = mlx4_priv(dev);
1561 struct mlx4_adapter adapter;
1562 struct mlx4_dev_cap dev_cap;
1563 struct mlx4_mod_stat_cfg mlx4_cfg;
1564 struct mlx4_profile profile;
1565 struct mlx4_init_hca_param init_hca;
1566 u64 icm_size;
1567 int err;
1568
1569 if (!mlx4_is_slave(dev)) {
1570 err = mlx4_QUERY_FW(dev);
1571 if (err) {
1572 if (err == -EACCES)
1573 mlx4_info(dev, "non-primary physical function, skipping\n");
1574 else
1575 mlx4_err(dev, "QUERY_FW command failed, aborting\n");
1576 return err;
1577 }
1578
1579 err = mlx4_load_fw(dev);
1580 if (err) {
1581 mlx4_err(dev, "Failed to start FW, aborting\n");
1582 return err;
1583 }
1584
1585 mlx4_cfg.log_pg_sz_m = 1;
1586 mlx4_cfg.log_pg_sz = 0;
1587 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
1588 if (err)
1589 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
1590
1591 err = mlx4_dev_cap(dev, &dev_cap);
1592 if (err) {
1593 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
1594 goto err_stop_fw;
1595 }
1596
1597 choose_steering_mode(dev, &dev_cap);
1598 choose_tunnel_offload_mode(dev, &dev_cap);
1599
1600 err = mlx4_get_phys_port_id(dev);
1601 if (err)
1602 mlx4_err(dev, "Fail to get physical port id\n");
1603
1604 if (mlx4_is_master(dev))
1605 mlx4_parav_master_pf_caps(dev);
1606
1607 if (mlx4_low_memory_profile()) {
1608 mlx4_info(dev, "Running from within kdump kernel. Using low memory profile\n");
1609 profile = low_mem_profile;
1610 } else {
1611 profile = default_profile;
1612 }
1613 if (dev->caps.steering_mode ==
1614 MLX4_STEERING_MODE_DEVICE_MANAGED)
1615 profile.num_mcg = MLX4_FS_NUM_MCG;
1616
1617 icm_size = mlx4_make_profile(dev, &profile, &dev_cap,
1618 &init_hca);
1619 if ((long long) icm_size < 0) {
1620 err = icm_size;
1621 goto err_stop_fw;
1622 }
1623
1624 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
1625
1626 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
1627 init_hca.uar_page_sz = PAGE_SHIFT - 12;
1628 init_hca.mw_enabled = 0;
1629 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
1630 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
1631 init_hca.mw_enabled = INIT_HCA_TPT_MW_ENABLE;
1632
1633 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
1634 if (err)
1635 goto err_stop_fw;
1636
1637 err = mlx4_INIT_HCA(dev, &init_hca);
1638 if (err) {
1639 mlx4_err(dev, "INIT_HCA command failed, aborting\n");
1640 goto err_free_icm;
1641 }
1642 /*
1643 * If TS is supported by FW
1644 * read HCA frequency by QUERY_HCA command
1645 */
1646 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
1647 memset(&init_hca, 0, sizeof(init_hca));
1648 err = mlx4_QUERY_HCA(dev, &init_hca);
1649 if (err) {
1650 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp\n");
1651 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1652 } else {
1653 dev->caps.hca_core_clock =
1654 init_hca.hca_core_clock;
1655 }
1656
1657 /* In case we got HCA frequency 0 - disable timestamping
1658 * to avoid dividing by zero
1659 */
1660 if (!dev->caps.hca_core_clock) {
1661 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1662 mlx4_err(dev,
1663 "HCA frequency is 0 - timestamping is not supported\n");
1664 } else if (map_internal_clock(dev)) {
1665 /*
1666 * Map internal clock,
1667 * in case of failure disable timestamping
1668 */
1669 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1670 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported\n");
1671 }
1672 }
1673 } else {
1674 err = mlx4_init_slave(dev);
1675 if (err) {
1676 if (err != -EPROBE_DEFER)
1677 mlx4_err(dev, "Failed to initialize slave\n");
1678 return err;
1679 }
1680
1681 err = mlx4_slave_cap(dev);
1682 if (err) {
1683 mlx4_err(dev, "Failed to obtain slave caps\n");
1684 goto err_close;
1685 }
1686 }
1687
1688 if (map_bf_area(dev))
1689 mlx4_dbg(dev, "Failed to map blue flame area\n");
1690
1691 /*Only the master set the ports, all the rest got it from it.*/
1692 if (!mlx4_is_slave(dev))
1693 mlx4_set_port_mask(dev);
1694
1695 err = mlx4_QUERY_ADAPTER(dev, &adapter);
1696 if (err) {
1697 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting\n");
1698 goto unmap_bf;
1699 }
1700
1701 priv->eq_table.inta_pin = adapter.inta_pin;
1702 memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
1703
1704 return 0;
1705
1706 unmap_bf:
1707 unmap_internal_clock(dev);
1708 unmap_bf_area(dev);
1709
1710 if (mlx4_is_slave(dev)) {
1711 kfree(dev->caps.qp0_qkey);
1712 kfree(dev->caps.qp0_tunnel);
1713 kfree(dev->caps.qp0_proxy);
1714 kfree(dev->caps.qp1_tunnel);
1715 kfree(dev->caps.qp1_proxy);
1716 }
1717
1718 err_close:
1719 if (mlx4_is_slave(dev))
1720 mlx4_slave_exit(dev);
1721 else
1722 mlx4_CLOSE_HCA(dev, 0);
1723
1724 err_free_icm:
1725 if (!mlx4_is_slave(dev))
1726 mlx4_free_icms(dev);
1727
1728 err_stop_fw:
1729 if (!mlx4_is_slave(dev)) {
1730 mlx4_UNMAP_FA(dev);
1731 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1732 }
1733 return err;
1734 }
1735
1736 static int mlx4_init_counters_table(struct mlx4_dev *dev)
1737 {
1738 struct mlx4_priv *priv = mlx4_priv(dev);
1739 int nent;
1740
1741 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1742 return -ENOENT;
1743
1744 nent = dev->caps.max_counters;
1745 return mlx4_bitmap_init(&priv->counters_bitmap, nent, nent - 1, 0, 0);
1746 }
1747
1748 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
1749 {
1750 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
1751 }
1752
1753 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1754 {
1755 struct mlx4_priv *priv = mlx4_priv(dev);
1756
1757 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
1758 return -ENOENT;
1759
1760 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
1761 if (*idx == -1)
1762 return -ENOMEM;
1763
1764 return 0;
1765 }
1766
1767 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
1768 {
1769 u64 out_param;
1770 int err;
1771
1772 if (mlx4_is_mfunc(dev)) {
1773 err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
1774 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
1775 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
1776 if (!err)
1777 *idx = get_param_l(&out_param);
1778
1779 return err;
1780 }
1781 return __mlx4_counter_alloc(dev, idx);
1782 }
1783 EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
1784
1785 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1786 {
1787 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR);
1788 return;
1789 }
1790
1791 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
1792 {
1793 u64 in_param = 0;
1794
1795 if (mlx4_is_mfunc(dev)) {
1796 set_param_l(&in_param, idx);
1797 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
1798 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
1799 MLX4_CMD_WRAPPED);
1800 return;
1801 }
1802 __mlx4_counter_free(dev, idx);
1803 }
1804 EXPORT_SYMBOL_GPL(mlx4_counter_free);
1805
1806 static int mlx4_setup_hca(struct mlx4_dev *dev)
1807 {
1808 struct mlx4_priv *priv = mlx4_priv(dev);
1809 int err;
1810 int port;
1811 __be32 ib_port_default_caps;
1812
1813 err = mlx4_init_uar_table(dev);
1814 if (err) {
1815 mlx4_err(dev, "Failed to initialize user access region table, aborting\n");
1816 return err;
1817 }
1818
1819 err = mlx4_uar_alloc(dev, &priv->driver_uar);
1820 if (err) {
1821 mlx4_err(dev, "Failed to allocate driver access region, aborting\n");
1822 goto err_uar_table_free;
1823 }
1824
1825 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
1826 if (!priv->kar) {
1827 mlx4_err(dev, "Couldn't map kernel access region, aborting\n");
1828 err = -ENOMEM;
1829 goto err_uar_free;
1830 }
1831
1832 err = mlx4_init_pd_table(dev);
1833 if (err) {
1834 mlx4_err(dev, "Failed to initialize protection domain table, aborting\n");
1835 goto err_kar_unmap;
1836 }
1837
1838 err = mlx4_init_xrcd_table(dev);
1839 if (err) {
1840 mlx4_err(dev, "Failed to initialize reliable connection domain table, aborting\n");
1841 goto err_pd_table_free;
1842 }
1843
1844 err = mlx4_init_mr_table(dev);
1845 if (err) {
1846 mlx4_err(dev, "Failed to initialize memory region table, aborting\n");
1847 goto err_xrcd_table_free;
1848 }
1849
1850 if (!mlx4_is_slave(dev)) {
1851 err = mlx4_init_mcg_table(dev);
1852 if (err) {
1853 mlx4_err(dev, "Failed to initialize multicast group table, aborting\n");
1854 goto err_mr_table_free;
1855 }
1856 err = mlx4_config_mad_demux(dev);
1857 if (err) {
1858 mlx4_err(dev, "Failed in config_mad_demux, aborting\n");
1859 goto err_mcg_table_free;
1860 }
1861 }
1862
1863 err = mlx4_init_eq_table(dev);
1864 if (err) {
1865 mlx4_err(dev, "Failed to initialize event queue table, aborting\n");
1866 goto err_mcg_table_free;
1867 }
1868
1869 err = mlx4_cmd_use_events(dev);
1870 if (err) {
1871 mlx4_err(dev, "Failed to switch to event-driven firmware commands, aborting\n");
1872 goto err_eq_table_free;
1873 }
1874
1875 err = mlx4_NOP(dev);
1876 if (err) {
1877 if (dev->flags & MLX4_FLAG_MSI_X) {
1878 mlx4_warn(dev, "NOP command failed to generate MSI-X interrupt IRQ %d)\n",
1879 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1880 mlx4_warn(dev, "Trying again without MSI-X\n");
1881 } else {
1882 mlx4_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting\n",
1883 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
1884 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
1885 }
1886
1887 goto err_cmd_poll;
1888 }
1889
1890 mlx4_dbg(dev, "NOP command IRQ test passed\n");
1891
1892 err = mlx4_init_cq_table(dev);
1893 if (err) {
1894 mlx4_err(dev, "Failed to initialize completion queue table, aborting\n");
1895 goto err_cmd_poll;
1896 }
1897
1898 err = mlx4_init_srq_table(dev);
1899 if (err) {
1900 mlx4_err(dev, "Failed to initialize shared receive queue table, aborting\n");
1901 goto err_cq_table_free;
1902 }
1903
1904 err = mlx4_init_qp_table(dev);
1905 if (err) {
1906 mlx4_err(dev, "Failed to initialize queue pair table, aborting\n");
1907 goto err_srq_table_free;
1908 }
1909
1910 err = mlx4_init_counters_table(dev);
1911 if (err && err != -ENOENT) {
1912 mlx4_err(dev, "Failed to initialize counters table, aborting\n");
1913 goto err_qp_table_free;
1914 }
1915
1916 if (!mlx4_is_slave(dev)) {
1917 for (port = 1; port <= dev->caps.num_ports; port++) {
1918 ib_port_default_caps = 0;
1919 err = mlx4_get_port_ib_caps(dev, port,
1920 &ib_port_default_caps);
1921 if (err)
1922 mlx4_warn(dev, "failed to get port %d default ib capabilities (%d). Continuing with caps = 0\n",
1923 port, err);
1924 dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
1925
1926 /* initialize per-slave default ib port capabilities */
1927 if (mlx4_is_master(dev)) {
1928 int i;
1929 for (i = 0; i < dev->num_slaves; i++) {
1930 if (i == mlx4_master_func_num(dev))
1931 continue;
1932 priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
1933 ib_port_default_caps;
1934 }
1935 }
1936
1937 if (mlx4_is_mfunc(dev))
1938 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
1939 else
1940 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
1941
1942 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
1943 dev->caps.pkey_table_len[port] : -1);
1944 if (err) {
1945 mlx4_err(dev, "Failed to set port %d, aborting\n",
1946 port);
1947 goto err_counters_table_free;
1948 }
1949 }
1950 }
1951
1952 return 0;
1953
1954 err_counters_table_free:
1955 mlx4_cleanup_counters_table(dev);
1956
1957 err_qp_table_free:
1958 mlx4_cleanup_qp_table(dev);
1959
1960 err_srq_table_free:
1961 mlx4_cleanup_srq_table(dev);
1962
1963 err_cq_table_free:
1964 mlx4_cleanup_cq_table(dev);
1965
1966 err_cmd_poll:
1967 mlx4_cmd_use_polling(dev);
1968
1969 err_eq_table_free:
1970 mlx4_cleanup_eq_table(dev);
1971
1972 err_mcg_table_free:
1973 if (!mlx4_is_slave(dev))
1974 mlx4_cleanup_mcg_table(dev);
1975
1976 err_mr_table_free:
1977 mlx4_cleanup_mr_table(dev);
1978
1979 err_xrcd_table_free:
1980 mlx4_cleanup_xrcd_table(dev);
1981
1982 err_pd_table_free:
1983 mlx4_cleanup_pd_table(dev);
1984
1985 err_kar_unmap:
1986 iounmap(priv->kar);
1987
1988 err_uar_free:
1989 mlx4_uar_free(dev, &priv->driver_uar);
1990
1991 err_uar_table_free:
1992 mlx4_cleanup_uar_table(dev);
1993 return err;
1994 }
1995
1996 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
1997 {
1998 struct mlx4_priv *priv = mlx4_priv(dev);
1999 struct msix_entry *entries;
2000 int nreq = min_t(int, dev->caps.num_ports *
2001 min_t(int, num_online_cpus() + 1,
2002 MAX_MSIX_P_PORT) + MSIX_LEGACY_SZ, MAX_MSIX);
2003 int i;
2004
2005 if (msi_x) {
2006 nreq = min_t(int, dev->caps.num_eqs - dev->caps.reserved_eqs,
2007 nreq);
2008
2009 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
2010 if (!entries)
2011 goto no_msi;
2012
2013 for (i = 0; i < nreq; ++i)
2014 entries[i].entry = i;
2015
2016 nreq = pci_enable_msix_range(dev->pdev, entries, 2, nreq);
2017
2018 if (nreq < 0) {
2019 kfree(entries);
2020 goto no_msi;
2021 } else if (nreq < MSIX_LEGACY_SZ +
2022 dev->caps.num_ports * MIN_MSIX_P_PORT) {
2023 /*Working in legacy mode , all EQ's shared*/
2024 dev->caps.comp_pool = 0;
2025 dev->caps.num_comp_vectors = nreq - 1;
2026 } else {
2027 dev->caps.comp_pool = nreq - MSIX_LEGACY_SZ;
2028 dev->caps.num_comp_vectors = MSIX_LEGACY_SZ - 1;
2029 }
2030 for (i = 0; i < nreq; ++i)
2031 priv->eq_table.eq[i].irq = entries[i].vector;
2032
2033 dev->flags |= MLX4_FLAG_MSI_X;
2034
2035 kfree(entries);
2036 return;
2037 }
2038
2039 no_msi:
2040 dev->caps.num_comp_vectors = 1;
2041 dev->caps.comp_pool = 0;
2042
2043 for (i = 0; i < 2; ++i)
2044 priv->eq_table.eq[i].irq = dev->pdev->irq;
2045 }
2046
2047 static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
2048 {
2049 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
2050 int err = 0;
2051
2052 info->dev = dev;
2053 info->port = port;
2054 if (!mlx4_is_slave(dev)) {
2055 mlx4_init_mac_table(dev, &info->mac_table);
2056 mlx4_init_vlan_table(dev, &info->vlan_table);
2057 mlx4_init_roce_gid_table(dev, &info->gid_table);
2058 info->base_qpn = mlx4_get_base_qpn(dev, port);
2059 }
2060
2061 sprintf(info->dev_name, "mlx4_port%d", port);
2062 info->port_attr.attr.name = info->dev_name;
2063 if (mlx4_is_mfunc(dev))
2064 info->port_attr.attr.mode = S_IRUGO;
2065 else {
2066 info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
2067 info->port_attr.store = set_port_type;
2068 }
2069 info->port_attr.show = show_port_type;
2070 sysfs_attr_init(&info->port_attr.attr);
2071
2072 err = device_create_file(&dev->pdev->dev, &info->port_attr);
2073 if (err) {
2074 mlx4_err(dev, "Failed to create file for port %d\n", port);
2075 info->port = -1;
2076 }
2077
2078 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
2079 info->port_mtu_attr.attr.name = info->dev_mtu_name;
2080 if (mlx4_is_mfunc(dev))
2081 info->port_mtu_attr.attr.mode = S_IRUGO;
2082 else {
2083 info->port_mtu_attr.attr.mode = S_IRUGO | S_IWUSR;
2084 info->port_mtu_attr.store = set_port_ib_mtu;
2085 }
2086 info->port_mtu_attr.show = show_port_ib_mtu;
2087 sysfs_attr_init(&info->port_mtu_attr.attr);
2088
2089 err = device_create_file(&dev->pdev->dev, &info->port_mtu_attr);
2090 if (err) {
2091 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
2092 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
2093 info->port = -1;
2094 }
2095
2096 return err;
2097 }
2098
2099 static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
2100 {
2101 if (info->port < 0)
2102 return;
2103
2104 device_remove_file(&info->dev->pdev->dev, &info->port_attr);
2105 device_remove_file(&info->dev->pdev->dev, &info->port_mtu_attr);
2106 }
2107
2108 static int mlx4_init_steering(struct mlx4_dev *dev)
2109 {
2110 struct mlx4_priv *priv = mlx4_priv(dev);
2111 int num_entries = dev->caps.num_ports;
2112 int i, j;
2113
2114 priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL);
2115 if (!priv->steer)
2116 return -ENOMEM;
2117
2118 for (i = 0; i < num_entries; i++)
2119 for (j = 0; j < MLX4_NUM_STEERS; j++) {
2120 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
2121 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
2122 }
2123 return 0;
2124 }
2125
2126 static void mlx4_clear_steering(struct mlx4_dev *dev)
2127 {
2128 struct mlx4_priv *priv = mlx4_priv(dev);
2129 struct mlx4_steer_index *entry, *tmp_entry;
2130 struct mlx4_promisc_qp *pqp, *tmp_pqp;
2131 int num_entries = dev->caps.num_ports;
2132 int i, j;
2133
2134 for (i = 0; i < num_entries; i++) {
2135 for (j = 0; j < MLX4_NUM_STEERS; j++) {
2136 list_for_each_entry_safe(pqp, tmp_pqp,
2137 &priv->steer[i].promisc_qps[j],
2138 list) {
2139 list_del(&pqp->list);
2140 kfree(pqp);
2141 }
2142 list_for_each_entry_safe(entry, tmp_entry,
2143 &priv->steer[i].steer_entries[j],
2144 list) {
2145 list_del(&entry->list);
2146 list_for_each_entry_safe(pqp, tmp_pqp,
2147 &entry->duplicates,
2148 list) {
2149 list_del(&pqp->list);
2150 kfree(pqp);
2151 }
2152 kfree(entry);
2153 }
2154 }
2155 }
2156 kfree(priv->steer);
2157 }
2158
2159 static int extended_func_num(struct pci_dev *pdev)
2160 {
2161 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
2162 }
2163
2164 #define MLX4_OWNER_BASE 0x8069c
2165 #define MLX4_OWNER_SIZE 4
2166
2167 static int mlx4_get_ownership(struct mlx4_dev *dev)
2168 {
2169 void __iomem *owner;
2170 u32 ret;
2171
2172 if (pci_channel_offline(dev->pdev))
2173 return -EIO;
2174
2175 owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
2176 MLX4_OWNER_SIZE);
2177 if (!owner) {
2178 mlx4_err(dev, "Failed to obtain ownership bit\n");
2179 return -ENOMEM;
2180 }
2181
2182 ret = readl(owner);
2183 iounmap(owner);
2184 return (int) !!ret;
2185 }
2186
2187 static void mlx4_free_ownership(struct mlx4_dev *dev)
2188 {
2189 void __iomem *owner;
2190
2191 if (pci_channel_offline(dev->pdev))
2192 return;
2193
2194 owner = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_OWNER_BASE,
2195 MLX4_OWNER_SIZE);
2196 if (!owner) {
2197 mlx4_err(dev, "Failed to obtain ownership bit\n");
2198 return;
2199 }
2200 writel(0, owner);
2201 msleep(1000);
2202 iounmap(owner);
2203 }
2204
2205 static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data)
2206 {
2207 struct mlx4_priv *priv;
2208 struct mlx4_dev *dev;
2209 int err;
2210 int port;
2211 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
2212 int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0};
2213 const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = {
2214 {2, 0, 0}, {0, 1, 2}, {0, 1, 2} };
2215 unsigned total_vfs = 0;
2216 int sriov_initialized = 0;
2217 unsigned int i;
2218
2219 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
2220
2221 err = pci_enable_device(pdev);
2222 if (err) {
2223 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
2224 return err;
2225 }
2226
2227 /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS
2228 * per port, we must limit the number of VFs to 63 (since their are
2229 * 128 MACs)
2230 */
2231 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) && i < num_vfs_argc;
2232 total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) {
2233 nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i];
2234 if (nvfs[i] < 0) {
2235 dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n");
2236 return -EINVAL;
2237 }
2238 }
2239 for (i = 0; i < sizeof(prb_vf)/sizeof(prb_vf[0]) && i < probe_vfs_argc;
2240 i++) {
2241 prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i];
2242 if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) {
2243 dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n");
2244 return -EINVAL;
2245 }
2246 }
2247 if (total_vfs >= MLX4_MAX_NUM_VF) {
2248 dev_err(&pdev->dev,
2249 "Requested more VF's (%d) than allowed (%d)\n",
2250 total_vfs, MLX4_MAX_NUM_VF - 1);
2251 return -EINVAL;
2252 }
2253
2254 for (i = 0; i < MLX4_MAX_PORTS; i++) {
2255 if (nvfs[i] + nvfs[2] >= MLX4_MAX_NUM_VF_P_PORT) {
2256 dev_err(&pdev->dev,
2257 "Requested more VF's (%d) for port (%d) than allowed (%d)\n",
2258 nvfs[i] + nvfs[2], i + 1,
2259 MLX4_MAX_NUM_VF_P_PORT - 1);
2260 return -EINVAL;
2261 }
2262 }
2263
2264
2265 /*
2266 * Check for BARs.
2267 */
2268 if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) &&
2269 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2270 dev_err(&pdev->dev, "Missing DCS, aborting (driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n",
2271 pci_dev_data, pci_resource_flags(pdev, 0));
2272 err = -ENODEV;
2273 goto err_disable_pdev;
2274 }
2275 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
2276 dev_err(&pdev->dev, "Missing UAR, aborting\n");
2277 err = -ENODEV;
2278 goto err_disable_pdev;
2279 }
2280
2281 err = pci_request_regions(pdev, DRV_NAME);
2282 if (err) {
2283 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
2284 goto err_disable_pdev;
2285 }
2286
2287 pci_set_master(pdev);
2288
2289 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2290 if (err) {
2291 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
2292 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2293 if (err) {
2294 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
2295 goto err_release_regions;
2296 }
2297 }
2298 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
2299 if (err) {
2300 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
2301 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
2302 if (err) {
2303 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, aborting\n");
2304 goto err_release_regions;
2305 }
2306 }
2307
2308 /* Allow large DMA segments, up to the firmware limit of 1 GB */
2309 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
2310
2311 dev = pci_get_drvdata(pdev);
2312 priv = mlx4_priv(dev);
2313 dev->pdev = pdev;
2314 INIT_LIST_HEAD(&priv->ctx_list);
2315 spin_lock_init(&priv->ctx_lock);
2316
2317 mutex_init(&priv->port_mutex);
2318
2319 INIT_LIST_HEAD(&priv->pgdir_list);
2320 mutex_init(&priv->pgdir_mutex);
2321
2322 INIT_LIST_HEAD(&priv->bf_list);
2323 mutex_init(&priv->bf_mutex);
2324
2325 dev->rev_id = pdev->revision;
2326 dev->numa_node = dev_to_node(&pdev->dev);
2327 /* Detect if this device is a virtual function */
2328 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
2329 /* When acting as pf, we normally skip vfs unless explicitly
2330 * requested to probe them. */
2331 if (total_vfs) {
2332 unsigned vfs_offset = 0;
2333 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) &&
2334 vfs_offset + nvfs[i] < extended_func_num(pdev);
2335 vfs_offset += nvfs[i], i++)
2336 ;
2337 if (i == sizeof(nvfs)/sizeof(nvfs[0])) {
2338 err = -ENODEV;
2339 goto err_free_dev;
2340 }
2341 if ((extended_func_num(pdev) - vfs_offset)
2342 > prb_vf[i]) {
2343 mlx4_warn(dev, "Skipping virtual function:%d\n",
2344 extended_func_num(pdev));
2345 err = -ENODEV;
2346 goto err_free_dev;
2347 }
2348 }
2349 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
2350 dev->flags |= MLX4_FLAG_SLAVE;
2351 } else {
2352 /* We reset the device and enable SRIOV only for physical
2353 * devices. Try to claim ownership on the device;
2354 * if already taken, skip -- do not allow multiple PFs */
2355 err = mlx4_get_ownership(dev);
2356 if (err) {
2357 if (err < 0)
2358 goto err_free_dev;
2359 else {
2360 mlx4_warn(dev, "Multiple PFs not yet supported - Skipping PF\n");
2361 err = -EINVAL;
2362 goto err_free_dev;
2363 }
2364 }
2365
2366 if (total_vfs) {
2367 mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n",
2368 total_vfs);
2369 dev->dev_vfs = kzalloc(
2370 total_vfs * sizeof(*dev->dev_vfs),
2371 GFP_KERNEL);
2372 if (NULL == dev->dev_vfs) {
2373 mlx4_err(dev, "Failed to allocate memory for VFs\n");
2374 err = 0;
2375 } else {
2376 atomic_inc(&pf_loading);
2377 err = pci_enable_sriov(pdev, total_vfs);
2378 if (err) {
2379 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d)\n",
2380 err);
2381 atomic_dec(&pf_loading);
2382 err = 0;
2383 } else {
2384 mlx4_warn(dev, "Running in master mode\n");
2385 dev->flags |= MLX4_FLAG_SRIOV |
2386 MLX4_FLAG_MASTER;
2387 dev->num_vfs = total_vfs;
2388 sriov_initialized = 1;
2389 }
2390 }
2391 }
2392
2393 atomic_set(&priv->opreq_count, 0);
2394 INIT_WORK(&priv->opreq_task, mlx4_opreq_action);
2395
2396 /*
2397 * Now reset the HCA before we touch the PCI capabilities or
2398 * attempt a firmware command, since a boot ROM may have left
2399 * the HCA in an undefined state.
2400 */
2401 err = mlx4_reset(dev);
2402 if (err) {
2403 mlx4_err(dev, "Failed to reset HCA, aborting\n");
2404 goto err_rel_own;
2405 }
2406 }
2407
2408 slave_start:
2409 err = mlx4_cmd_init(dev);
2410 if (err) {
2411 mlx4_err(dev, "Failed to init command interface, aborting\n");
2412 goto err_sriov;
2413 }
2414
2415 /* In slave functions, the communication channel must be initialized
2416 * before posting commands. Also, init num_slaves before calling
2417 * mlx4_init_hca */
2418 if (mlx4_is_mfunc(dev)) {
2419 if (mlx4_is_master(dev))
2420 dev->num_slaves = MLX4_MAX_NUM_SLAVES;
2421 else {
2422 dev->num_slaves = 0;
2423 err = mlx4_multi_func_init(dev);
2424 if (err) {
2425 mlx4_err(dev, "Failed to init slave mfunc 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 if (!mlx4_is_slave(dev))
2449 mlx4_check_pcie_caps(dev);
2450
2451 /* In master functions, the communication channel must be initialized
2452 * after obtaining its address from fw */
2453 if (mlx4_is_master(dev)) {
2454 unsigned sum = 0;
2455 err = mlx4_multi_func_init(dev);
2456 if (err) {
2457 mlx4_err(dev, "Failed to init master mfunc 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 with IB port - single port VFs syntax is only supported when all ports are configured as ethernet\n");
2469 err = -EINVAL;
2470 goto err_master_mfunc;
2471 }
2472 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]); i++) {
2473 unsigned j;
2474 for (j = 0; j < nvfs[i]; ++sum, ++j) {
2475 dev->dev_vfs[sum].min_port =
2476 i < 2 ? i + 1 : 1;
2477 dev->dev_vfs[sum].n_ports = i < 2 ? 1 :
2478 dev->caps.num_ports;
2479 }
2480 }
2481 }
2482 }
2483
2484 err = mlx4_alloc_eq_table(dev);
2485 if (err)
2486 goto err_master_mfunc;
2487
2488 priv->msix_ctl.pool_bm = 0;
2489 mutex_init(&priv->msix_ctl.pool_lock);
2490
2491 mlx4_enable_msi_x(dev);
2492 if ((mlx4_is_mfunc(dev)) &&
2493 !(dev->flags & MLX4_FLAG_MSI_X)) {
2494 err = -ENOSYS;
2495 mlx4_err(dev, "INTx is not supported in multi-function mode, aborting\n");
2496 goto err_free_eq;
2497 }
2498
2499 if (!mlx4_is_slave(dev)) {
2500 err = mlx4_init_steering(dev);
2501 if (err)
2502 goto err_free_eq;
2503 }
2504
2505 err = mlx4_setup_hca(dev);
2506 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
2507 !mlx4_is_mfunc(dev)) {
2508 dev->flags &= ~MLX4_FLAG_MSI_X;
2509 dev->caps.num_comp_vectors = 1;
2510 dev->caps.comp_pool = 0;
2511 pci_disable_msix(pdev);
2512 err = mlx4_setup_hca(dev);
2513 }
2514
2515 if (err)
2516 goto err_steer;
2517
2518 mlx4_init_quotas(dev);
2519
2520 for (port = 1; port <= dev->caps.num_ports; port++) {
2521 err = mlx4_init_port_info(dev, port);
2522 if (err)
2523 goto err_port;
2524 }
2525
2526 err = mlx4_register_device(dev);
2527 if (err)
2528 goto err_port;
2529
2530 mlx4_request_modules(dev);
2531
2532 mlx4_sense_init(dev);
2533 mlx4_start_sense(dev);
2534
2535 priv->removed = 0;
2536
2537 if (mlx4_is_master(dev) && dev->num_vfs)
2538 atomic_dec(&pf_loading);
2539
2540 return 0;
2541
2542 err_port:
2543 for (--port; port >= 1; --port)
2544 mlx4_cleanup_port_info(&priv->port[port]);
2545
2546 mlx4_cleanup_counters_table(dev);
2547 mlx4_cleanup_qp_table(dev);
2548 mlx4_cleanup_srq_table(dev);
2549 mlx4_cleanup_cq_table(dev);
2550 mlx4_cmd_use_polling(dev);
2551 mlx4_cleanup_eq_table(dev);
2552 mlx4_cleanup_mcg_table(dev);
2553 mlx4_cleanup_mr_table(dev);
2554 mlx4_cleanup_xrcd_table(dev);
2555 mlx4_cleanup_pd_table(dev);
2556 mlx4_cleanup_uar_table(dev);
2557
2558 err_steer:
2559 if (!mlx4_is_slave(dev))
2560 mlx4_clear_steering(dev);
2561
2562 err_free_eq:
2563 mlx4_free_eq_table(dev);
2564
2565 err_master_mfunc:
2566 if (mlx4_is_master(dev))
2567 mlx4_multi_func_cleanup(dev);
2568
2569 if (mlx4_is_slave(dev)) {
2570 kfree(dev->caps.qp0_qkey);
2571 kfree(dev->caps.qp0_tunnel);
2572 kfree(dev->caps.qp0_proxy);
2573 kfree(dev->caps.qp1_tunnel);
2574 kfree(dev->caps.qp1_proxy);
2575 }
2576
2577 err_close:
2578 if (dev->flags & MLX4_FLAG_MSI_X)
2579 pci_disable_msix(pdev);
2580
2581 mlx4_close_hca(dev);
2582
2583 err_mfunc:
2584 if (mlx4_is_slave(dev))
2585 mlx4_multi_func_cleanup(dev);
2586
2587 err_cmd:
2588 mlx4_cmd_cleanup(dev);
2589
2590 err_sriov:
2591 if (dev->flags & MLX4_FLAG_SRIOV)
2592 pci_disable_sriov(pdev);
2593
2594 err_rel_own:
2595 if (!mlx4_is_slave(dev))
2596 mlx4_free_ownership(dev);
2597
2598 if (mlx4_is_master(dev) && dev->num_vfs)
2599 atomic_dec(&pf_loading);
2600
2601 kfree(priv->dev.dev_vfs);
2602
2603 err_free_dev:
2604 kfree(priv);
2605
2606 err_release_regions:
2607 pci_release_regions(pdev);
2608
2609 err_disable_pdev:
2610 pci_disable_device(pdev);
2611 pci_set_drvdata(pdev, NULL);
2612 return err;
2613 }
2614
2615 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
2616 {
2617 struct mlx4_priv *priv;
2618 struct mlx4_dev *dev;
2619
2620 printk_once(KERN_INFO "%s", mlx4_version);
2621
2622 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2623 if (!priv)
2624 return -ENOMEM;
2625
2626 dev = &priv->dev;
2627 pci_set_drvdata(pdev, dev);
2628 priv->pci_dev_data = id->driver_data;
2629
2630 return __mlx4_init_one(pdev, id->driver_data);
2631 }
2632
2633 static void __mlx4_remove_one(struct pci_dev *pdev)
2634 {
2635 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2636 struct mlx4_priv *priv = mlx4_priv(dev);
2637 int pci_dev_data;
2638 int p;
2639
2640 if (priv->removed)
2641 return;
2642
2643 pci_dev_data = priv->pci_dev_data;
2644
2645 /* in SRIOV it is not allowed to unload the pf's
2646 * driver while there are alive vf's */
2647 if (mlx4_is_master(dev) && mlx4_how_many_lives_vf(dev))
2648 pr_warn("Removing PF when there are assigned VF's !!!\n");
2649 mlx4_stop_sense(dev);
2650 mlx4_unregister_device(dev);
2651
2652 for (p = 1; p <= dev->caps.num_ports; p++) {
2653 mlx4_cleanup_port_info(&priv->port[p]);
2654 mlx4_CLOSE_PORT(dev, p);
2655 }
2656
2657 if (mlx4_is_master(dev))
2658 mlx4_free_resource_tracker(dev,
2659 RES_TR_FREE_SLAVES_ONLY);
2660
2661 mlx4_cleanup_counters_table(dev);
2662 mlx4_cleanup_qp_table(dev);
2663 mlx4_cleanup_srq_table(dev);
2664 mlx4_cleanup_cq_table(dev);
2665 mlx4_cmd_use_polling(dev);
2666 mlx4_cleanup_eq_table(dev);
2667 mlx4_cleanup_mcg_table(dev);
2668 mlx4_cleanup_mr_table(dev);
2669 mlx4_cleanup_xrcd_table(dev);
2670 mlx4_cleanup_pd_table(dev);
2671
2672 if (mlx4_is_master(dev))
2673 mlx4_free_resource_tracker(dev,
2674 RES_TR_FREE_STRUCTS_ONLY);
2675
2676 iounmap(priv->kar);
2677 mlx4_uar_free(dev, &priv->driver_uar);
2678 mlx4_cleanup_uar_table(dev);
2679 if (!mlx4_is_slave(dev))
2680 mlx4_clear_steering(dev);
2681 mlx4_free_eq_table(dev);
2682 if (mlx4_is_master(dev))
2683 mlx4_multi_func_cleanup(dev);
2684 mlx4_close_hca(dev);
2685 if (mlx4_is_slave(dev))
2686 mlx4_multi_func_cleanup(dev);
2687 mlx4_cmd_cleanup(dev);
2688
2689 if (dev->flags & MLX4_FLAG_MSI_X)
2690 pci_disable_msix(pdev);
2691 if (dev->flags & MLX4_FLAG_SRIOV) {
2692 mlx4_warn(dev, "Disabling SR-IOV\n");
2693 pci_disable_sriov(pdev);
2694 dev->num_vfs = 0;
2695 }
2696
2697 if (!mlx4_is_slave(dev))
2698 mlx4_free_ownership(dev);
2699
2700 kfree(dev->caps.qp0_qkey);
2701 kfree(dev->caps.qp0_tunnel);
2702 kfree(dev->caps.qp0_proxy);
2703 kfree(dev->caps.qp1_tunnel);
2704 kfree(dev->caps.qp1_proxy);
2705 kfree(dev->dev_vfs);
2706
2707 pci_release_regions(pdev);
2708 pci_disable_device(pdev);
2709 memset(priv, 0, sizeof(*priv));
2710 priv->pci_dev_data = pci_dev_data;
2711 priv->removed = 1;
2712 }
2713
2714 static void mlx4_remove_one(struct pci_dev *pdev)
2715 {
2716 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2717 struct mlx4_priv *priv = mlx4_priv(dev);
2718
2719 __mlx4_remove_one(pdev);
2720 kfree(priv);
2721 pci_set_drvdata(pdev, NULL);
2722 }
2723
2724 int mlx4_restart_one(struct pci_dev *pdev)
2725 {
2726 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2727 struct mlx4_priv *priv = mlx4_priv(dev);
2728 int pci_dev_data;
2729
2730 pci_dev_data = priv->pci_dev_data;
2731 __mlx4_remove_one(pdev);
2732 return __mlx4_init_one(pdev, pci_dev_data);
2733 }
2734
2735 static const struct pci_device_id mlx4_pci_table[] = {
2736 /* MT25408 "Hermon" SDR */
2737 { PCI_VDEVICE(MELLANOX, 0x6340), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2738 /* MT25408 "Hermon" DDR */
2739 { PCI_VDEVICE(MELLANOX, 0x634a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2740 /* MT25408 "Hermon" QDR */
2741 { PCI_VDEVICE(MELLANOX, 0x6354), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2742 /* MT25408 "Hermon" DDR PCIe gen2 */
2743 { PCI_VDEVICE(MELLANOX, 0x6732), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2744 /* MT25408 "Hermon" QDR PCIe gen2 */
2745 { PCI_VDEVICE(MELLANOX, 0x673c), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2746 /* MT25408 "Hermon" EN 10GigE */
2747 { PCI_VDEVICE(MELLANOX, 0x6368), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2748 /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
2749 { PCI_VDEVICE(MELLANOX, 0x6750), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2750 /* MT25458 ConnectX EN 10GBASE-T 10GigE */
2751 { PCI_VDEVICE(MELLANOX, 0x6372), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2752 /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
2753 { PCI_VDEVICE(MELLANOX, 0x675a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2754 /* MT26468 ConnectX EN 10GigE PCIe gen2*/
2755 { PCI_VDEVICE(MELLANOX, 0x6764), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2756 /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */
2757 { PCI_VDEVICE(MELLANOX, 0x6746), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2758 /* MT26478 ConnectX2 40GigE PCIe gen2 */
2759 { PCI_VDEVICE(MELLANOX, 0x676e), MLX4_PCI_DEV_FORCE_SENSE_PORT },
2760 /* MT25400 Family [ConnectX-2 Virtual Function] */
2761 { PCI_VDEVICE(MELLANOX, 0x1002), MLX4_PCI_DEV_IS_VF },
2762 /* MT27500 Family [ConnectX-3] */
2763 { PCI_VDEVICE(MELLANOX, 0x1003), 0 },
2764 /* MT27500 Family [ConnectX-3 Virtual Function] */
2765 { PCI_VDEVICE(MELLANOX, 0x1004), MLX4_PCI_DEV_IS_VF },
2766 { PCI_VDEVICE(MELLANOX, 0x1005), 0 }, /* MT27510 Family */
2767 { PCI_VDEVICE(MELLANOX, 0x1006), 0 }, /* MT27511 Family */
2768 { PCI_VDEVICE(MELLANOX, 0x1007), 0 }, /* MT27520 Family */
2769 { PCI_VDEVICE(MELLANOX, 0x1008), 0 }, /* MT27521 Family */
2770 { PCI_VDEVICE(MELLANOX, 0x1009), 0 }, /* MT27530 Family */
2771 { PCI_VDEVICE(MELLANOX, 0x100a), 0 }, /* MT27531 Family */
2772 { PCI_VDEVICE(MELLANOX, 0x100b), 0 }, /* MT27540 Family */
2773 { PCI_VDEVICE(MELLANOX, 0x100c), 0 }, /* MT27541 Family */
2774 { PCI_VDEVICE(MELLANOX, 0x100d), 0 }, /* MT27550 Family */
2775 { PCI_VDEVICE(MELLANOX, 0x100e), 0 }, /* MT27551 Family */
2776 { PCI_VDEVICE(MELLANOX, 0x100f), 0 }, /* MT27560 Family */
2777 { PCI_VDEVICE(MELLANOX, 0x1010), 0 }, /* MT27561 Family */
2778 { 0, }
2779 };
2780
2781 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
2782
2783 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
2784 pci_channel_state_t state)
2785 {
2786 __mlx4_remove_one(pdev);
2787
2788 return state == pci_channel_io_perm_failure ?
2789 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
2790 }
2791
2792 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
2793 {
2794 struct mlx4_dev *dev = pci_get_drvdata(pdev);
2795 struct mlx4_priv *priv = mlx4_priv(dev);
2796 int ret;
2797
2798 ret = __mlx4_init_one(pdev, priv->pci_dev_data);
2799
2800 return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
2801 }
2802
2803 static const struct pci_error_handlers mlx4_err_handler = {
2804 .error_detected = mlx4_pci_err_detected,
2805 .slot_reset = mlx4_pci_slot_reset,
2806 };
2807
2808 static struct pci_driver mlx4_driver = {
2809 .name = DRV_NAME,
2810 .id_table = mlx4_pci_table,
2811 .probe = mlx4_init_one,
2812 .shutdown = __mlx4_remove_one,
2813 .remove = mlx4_remove_one,
2814 .err_handler = &mlx4_err_handler,
2815 };
2816
2817 static int __init mlx4_verify_params(void)
2818 {
2819 if ((log_num_mac < 0) || (log_num_mac > 7)) {
2820 pr_warn("mlx4_core: bad num_mac: %d\n", log_num_mac);
2821 return -1;
2822 }
2823
2824 if (log_num_vlan != 0)
2825 pr_warn("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
2826 MLX4_LOG_NUM_VLANS);
2827
2828 if (use_prio != 0)
2829 pr_warn("mlx4_core: use_prio - obsolete module param, ignored\n");
2830
2831 if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
2832 pr_warn("mlx4_core: bad log_mtts_per_seg: %d\n",
2833 log_mtts_per_seg);
2834 return -1;
2835 }
2836
2837 /* Check if module param for ports type has legal combination */
2838 if (port_type_array[0] == false && port_type_array[1] == true) {
2839 pr_warn("Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
2840 port_type_array[0] = true;
2841 }
2842
2843 if (mlx4_log_num_mgm_entry_size != -1 &&
2844 (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE ||
2845 mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE)) {
2846 pr_warn("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not in legal range (-1 or %d..%d)\n",
2847 mlx4_log_num_mgm_entry_size,
2848 MLX4_MIN_MGM_LOG_ENTRY_SIZE,
2849 MLX4_MAX_MGM_LOG_ENTRY_SIZE);
2850 return -1;
2851 }
2852
2853 return 0;
2854 }
2855
2856 static int __init mlx4_init(void)
2857 {
2858 int ret;
2859
2860 if (mlx4_verify_params())
2861 return -EINVAL;
2862
2863 mlx4_catas_init();
2864
2865 mlx4_wq = create_singlethread_workqueue("mlx4");
2866 if (!mlx4_wq)
2867 return -ENOMEM;
2868
2869 ret = pci_register_driver(&mlx4_driver);
2870 if (ret < 0)
2871 destroy_workqueue(mlx4_wq);
2872 return ret < 0 ? ret : 0;
2873 }
2874
2875 static void __exit mlx4_cleanup(void)
2876 {
2877 pci_unregister_driver(&mlx4_driver);
2878 destroy_workqueue(mlx4_wq);
2879 }
2880
2881 module_init(mlx4_init);
2882 module_exit(mlx4_cleanup);
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