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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 #include <linux/etherdevice.h>
46 #include <net/devlink.h>
47
48 #include <linux/mlx4/device.h>
49 #include <linux/mlx4/doorbell.h>
50
51 #include "mlx4.h"
52 #include "fw.h"
53 #include "icm.h"
54
55 MODULE_AUTHOR("Roland Dreier");
56 MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver");
57 MODULE_LICENSE("Dual BSD/GPL");
58 MODULE_VERSION(DRV_VERSION);
59
60 struct workqueue_struct *mlx4_wq;
61
62 #ifdef CONFIG_MLX4_DEBUG
63
64 int mlx4_debug_level = 0;
65 module_param_named(debug_level, mlx4_debug_level, int, 0644);
66 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
67
68 #endif /* CONFIG_MLX4_DEBUG */
69
70 #ifdef CONFIG_PCI_MSI
71
72 static int msi_x = 1;
73 module_param(msi_x, int, 0444);
74 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
75
76 #else /* CONFIG_PCI_MSI */
77
78 #define msi_x (0)
79
80 #endif /* CONFIG_PCI_MSI */
81
82 static uint8_t num_vfs[3] = {0, 0, 0};
83 static int num_vfs_argc;
84 module_param_array(num_vfs, byte , &num_vfs_argc, 0444);
85 MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0\n"
86 "num_vfs=port1,port2,port1+2");
87
88 static uint8_t probe_vf[3] = {0, 0, 0};
89 static int probe_vfs_argc;
90 module_param_array(probe_vf, byte, &probe_vfs_argc, 0444);
91 MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)\n"
92 "probe_vf=port1,port2,port1+2");
93
94 static int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
95 module_param_named(log_num_mgm_entry_size,
96 mlx4_log_num_mgm_entry_size, int, 0444);
97 MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num"
98 " of qp per mcg, for example:"
99 " 10 gives 248.range: 7 <="
100 " log_num_mgm_entry_size <= 12."
101 " To activate device managed"
102 " flow steering when available, set to -1");
103
104 static bool enable_64b_cqe_eqe = true;
105 module_param(enable_64b_cqe_eqe, bool, 0444);
106 MODULE_PARM_DESC(enable_64b_cqe_eqe,
107 "Enable 64 byte CQEs/EQEs when the FW supports this (default: True)");
108
109 static bool enable_4k_uar;
110 module_param(enable_4k_uar, bool, 0444);
111 MODULE_PARM_DESC(enable_4k_uar,
112 "Enable using 4K UAR. Should not be enabled if have VFs which do not support 4K UARs (default: false)");
113
114 #define PF_CONTEXT_BEHAVIOUR_MASK (MLX4_FUNC_CAP_64B_EQE_CQE | \
115 MLX4_FUNC_CAP_EQE_CQE_STRIDE | \
116 MLX4_FUNC_CAP_DMFS_A0_STATIC)
117
118 #define RESET_PERSIST_MASK_FLAGS (MLX4_FLAG_SRIOV)
119
120 static char mlx4_version[] =
121 DRV_NAME ": Mellanox ConnectX core driver v"
122 DRV_VERSION "\n";
123
124 static struct mlx4_profile default_profile = {
125 .num_qp = 1 << 18,
126 .num_srq = 1 << 16,
127 .rdmarc_per_qp = 1 << 4,
128 .num_cq = 1 << 16,
129 .num_mcg = 1 << 13,
130 .num_mpt = 1 << 19,
131 .num_mtt = 1 << 20, /* It is really num mtt segements */
132 };
133
134 static struct mlx4_profile low_mem_profile = {
135 .num_qp = 1 << 17,
136 .num_srq = 1 << 6,
137 .rdmarc_per_qp = 1 << 4,
138 .num_cq = 1 << 8,
139 .num_mcg = 1 << 8,
140 .num_mpt = 1 << 9,
141 .num_mtt = 1 << 7,
142 };
143
144 static int log_num_mac = 7;
145 module_param_named(log_num_mac, log_num_mac, int, 0444);
146 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
147
148 static int log_num_vlan;
149 module_param_named(log_num_vlan, log_num_vlan, int, 0444);
150 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
151 /* Log2 max number of VLANs per ETH port (0-7) */
152 #define MLX4_LOG_NUM_VLANS 7
153 #define MLX4_MIN_LOG_NUM_VLANS 0
154 #define MLX4_MIN_LOG_NUM_MAC 1
155
156 static bool use_prio;
157 module_param_named(use_prio, use_prio, bool, 0444);
158 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports (deprecated)");
159
160 int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
161 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
162 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-7)");
163
164 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE};
165 static int arr_argc = 2;
166 module_param_array(port_type_array, int, &arr_argc, 0444);
167 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default "
168 "1 for IB, 2 for Ethernet");
169
170 struct mlx4_port_config {
171 struct list_head list;
172 enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
173 struct pci_dev *pdev;
174 };
175
176 static atomic_t pf_loading = ATOMIC_INIT(0);
177
178 static inline void mlx4_set_num_reserved_uars(struct mlx4_dev *dev,
179 struct mlx4_dev_cap *dev_cap)
180 {
181 /* The reserved_uars is calculated by system page size unit.
182 * Therefore, adjustment is added when the uar page size is less
183 * than the system page size
184 */
185 dev->caps.reserved_uars =
186 max_t(int,
187 mlx4_get_num_reserved_uar(dev),
188 dev_cap->reserved_uars /
189 (1 << (PAGE_SHIFT - dev->uar_page_shift)));
190 }
191
192 int mlx4_check_port_params(struct mlx4_dev *dev,
193 enum mlx4_port_type *port_type)
194 {
195 int i;
196
197 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
198 for (i = 0; i < dev->caps.num_ports - 1; i++) {
199 if (port_type[i] != port_type[i + 1]) {
200 mlx4_err(dev, "Only same port types supported on this HCA, aborting\n");
201 return -EINVAL;
202 }
203 }
204 }
205
206 for (i = 0; i < dev->caps.num_ports; i++) {
207 if (!(port_type[i] & dev->caps.supported_type[i+1])) {
208 mlx4_err(dev, "Requested port type for port %d is not supported on this HCA\n",
209 i + 1);
210 return -EINVAL;
211 }
212 }
213 return 0;
214 }
215
216 static void mlx4_set_port_mask(struct mlx4_dev *dev)
217 {
218 int i;
219
220 for (i = 1; i <= dev->caps.num_ports; ++i)
221 dev->caps.port_mask[i] = dev->caps.port_type[i];
222 }
223
224 enum {
225 MLX4_QUERY_FUNC_NUM_SYS_EQS = 1 << 0,
226 };
227
228 static int mlx4_query_func(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
229 {
230 int err = 0;
231 struct mlx4_func func;
232
233 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) {
234 err = mlx4_QUERY_FUNC(dev, &func, 0);
235 if (err) {
236 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
237 return err;
238 }
239 dev_cap->max_eqs = func.max_eq;
240 dev_cap->reserved_eqs = func.rsvd_eqs;
241 dev_cap->reserved_uars = func.rsvd_uars;
242 err |= MLX4_QUERY_FUNC_NUM_SYS_EQS;
243 }
244 return err;
245 }
246
247 static void mlx4_enable_cqe_eqe_stride(struct mlx4_dev *dev)
248 {
249 struct mlx4_caps *dev_cap = &dev->caps;
250
251 /* FW not supporting or cancelled by user */
252 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_EQE_STRIDE) ||
253 !(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_CQE_STRIDE))
254 return;
255
256 /* Must have 64B CQE_EQE enabled by FW to use bigger stride
257 * When FW has NCSI it may decide not to report 64B CQE/EQEs
258 */
259 if (!(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_EQE) ||
260 !(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_CQE)) {
261 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
262 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
263 return;
264 }
265
266 if (cache_line_size() == 128 || cache_line_size() == 256) {
267 mlx4_dbg(dev, "Enabling CQE stride cacheLine supported\n");
268 /* Changing the real data inside CQE size to 32B */
269 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
270 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
271
272 if (mlx4_is_master(dev))
273 dev_cap->function_caps |= MLX4_FUNC_CAP_EQE_CQE_STRIDE;
274 } else {
275 if (cache_line_size() != 32 && cache_line_size() != 64)
276 mlx4_dbg(dev, "Disabling CQE stride, cacheLine size unsupported\n");
277 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
278 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
279 }
280 }
281
282 static int _mlx4_dev_port(struct mlx4_dev *dev, int port,
283 struct mlx4_port_cap *port_cap)
284 {
285 dev->caps.vl_cap[port] = port_cap->max_vl;
286 dev->caps.ib_mtu_cap[port] = port_cap->ib_mtu;
287 dev->phys_caps.gid_phys_table_len[port] = port_cap->max_gids;
288 dev->phys_caps.pkey_phys_table_len[port] = port_cap->max_pkeys;
289 /* set gid and pkey table operating lengths by default
290 * to non-sriov values
291 */
292 dev->caps.gid_table_len[port] = port_cap->max_gids;
293 dev->caps.pkey_table_len[port] = port_cap->max_pkeys;
294 dev->caps.port_width_cap[port] = port_cap->max_port_width;
295 dev->caps.eth_mtu_cap[port] = port_cap->eth_mtu;
296 dev->caps.max_tc_eth = port_cap->max_tc_eth;
297 dev->caps.def_mac[port] = port_cap->def_mac;
298 dev->caps.supported_type[port] = port_cap->supported_port_types;
299 dev->caps.suggested_type[port] = port_cap->suggested_type;
300 dev->caps.default_sense[port] = port_cap->default_sense;
301 dev->caps.trans_type[port] = port_cap->trans_type;
302 dev->caps.vendor_oui[port] = port_cap->vendor_oui;
303 dev->caps.wavelength[port] = port_cap->wavelength;
304 dev->caps.trans_code[port] = port_cap->trans_code;
305
306 return 0;
307 }
308
309 static int mlx4_dev_port(struct mlx4_dev *dev, int port,
310 struct mlx4_port_cap *port_cap)
311 {
312 int err = 0;
313
314 err = mlx4_QUERY_PORT(dev, port, port_cap);
315
316 if (err)
317 mlx4_err(dev, "QUERY_PORT command failed.\n");
318
319 return err;
320 }
321
322 static inline void mlx4_enable_ignore_fcs(struct mlx4_dev *dev)
323 {
324 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS))
325 return;
326
327 if (mlx4_is_mfunc(dev)) {
328 mlx4_dbg(dev, "SRIOV mode - Disabling Ignore FCS");
329 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
330 return;
331 }
332
333 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) {
334 mlx4_dbg(dev,
335 "Keep FCS is not supported - Disabling Ignore FCS");
336 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
337 return;
338 }
339 }
340
341 #define MLX4_A0_STEERING_TABLE_SIZE 256
342 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
343 {
344 int err;
345 int i;
346
347 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
348 if (err) {
349 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
350 return err;
351 }
352 mlx4_dev_cap_dump(dev, dev_cap);
353
354 if (dev_cap->min_page_sz > PAGE_SIZE) {
355 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
356 dev_cap->min_page_sz, PAGE_SIZE);
357 return -ENODEV;
358 }
359 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
360 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
361 dev_cap->num_ports, MLX4_MAX_PORTS);
362 return -ENODEV;
363 }
364
365 if (dev_cap->uar_size > pci_resource_len(dev->persist->pdev, 2)) {
366 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
367 dev_cap->uar_size,
368 (unsigned long long)
369 pci_resource_len(dev->persist->pdev, 2));
370 return -ENODEV;
371 }
372
373 dev->caps.num_ports = dev_cap->num_ports;
374 dev->caps.num_sys_eqs = dev_cap->num_sys_eqs;
375 dev->phys_caps.num_phys_eqs = dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS ?
376 dev->caps.num_sys_eqs :
377 MLX4_MAX_EQ_NUM;
378 for (i = 1; i <= dev->caps.num_ports; ++i) {
379 err = _mlx4_dev_port(dev, i, dev_cap->port_cap + i);
380 if (err) {
381 mlx4_err(dev, "QUERY_PORT command failed, aborting\n");
382 return err;
383 }
384 }
385
386 dev->caps.uar_page_size = PAGE_SIZE;
387 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
388 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
389 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
390 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
391 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
392 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
393 dev->caps.max_wqes = dev_cap->max_qp_sz;
394 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
395 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
396 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
397 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
398 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
399 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
400 /*
401 * Subtract 1 from the limit because we need to allocate a
402 * spare CQE so the HCA HW can tell the difference between an
403 * empty CQ and a full CQ.
404 */
405 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
406 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
407 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
408 dev->caps.reserved_mtts = dev_cap->reserved_mtts;
409 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
410
411 dev->caps.reserved_pds = dev_cap->reserved_pds;
412 dev->caps.reserved_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
413 dev_cap->reserved_xrcds : 0;
414 dev->caps.max_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
415 dev_cap->max_xrcds : 0;
416 dev->caps.mtt_entry_sz = dev_cap->mtt_entry_sz;
417
418 dev->caps.max_msg_sz = dev_cap->max_msg_sz;
419 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
420 dev->caps.flags = dev_cap->flags;
421 dev->caps.flags2 = dev_cap->flags2;
422 dev->caps.bmme_flags = dev_cap->bmme_flags;
423 dev->caps.reserved_lkey = dev_cap->reserved_lkey;
424 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
425 dev->caps.max_gso_sz = dev_cap->max_gso_sz;
426 dev->caps.max_rss_tbl_sz = dev_cap->max_rss_tbl_sz;
427
428 /* Save uar page shift */
429 if (!mlx4_is_slave(dev)) {
430 /* Virtual PCI function needs to determine UAR page size from
431 * firmware. Only master PCI function can set the uar page size
432 */
433 if (enable_4k_uar)
434 dev->uar_page_shift = DEFAULT_UAR_PAGE_SHIFT;
435 else
436 dev->uar_page_shift = PAGE_SHIFT;
437
438 mlx4_set_num_reserved_uars(dev, dev_cap);
439 }
440
441 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN) {
442 struct mlx4_init_hca_param hca_param;
443
444 memset(&hca_param, 0, sizeof(hca_param));
445 err = mlx4_QUERY_HCA(dev, &hca_param);
446 /* Turn off PHV_EN flag in case phv_check_en is set.
447 * phv_check_en is a HW check that parse the packet and verify
448 * phv bit was reported correctly in the wqe. To allow QinQ
449 * PHV_EN flag should be set and phv_check_en must be cleared
450 * otherwise QinQ packets will be drop by the HW.
451 */
452 if (err || hca_param.phv_check_en)
453 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_PHV_EN;
454 }
455
456 /* Sense port always allowed on supported devices for ConnectX-1 and -2 */
457 if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT)
458 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
459 /* Don't do sense port on multifunction devices (for now at least) */
460 if (mlx4_is_mfunc(dev))
461 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
462
463 if (mlx4_low_memory_profile()) {
464 dev->caps.log_num_macs = MLX4_MIN_LOG_NUM_MAC;
465 dev->caps.log_num_vlans = MLX4_MIN_LOG_NUM_VLANS;
466 } else {
467 dev->caps.log_num_macs = log_num_mac;
468 dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
469 }
470
471 for (i = 1; i <= dev->caps.num_ports; ++i) {
472 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
473 if (dev->caps.supported_type[i]) {
474 /* if only ETH is supported - assign ETH */
475 if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH)
476 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
477 /* if only IB is supported, assign IB */
478 else if (dev->caps.supported_type[i] ==
479 MLX4_PORT_TYPE_IB)
480 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
481 else {
482 /* if IB and ETH are supported, we set the port
483 * type according to user selection of port type;
484 * if user selected none, take the FW hint */
485 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE)
486 dev->caps.port_type[i] = dev->caps.suggested_type[i] ?
487 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB;
488 else
489 dev->caps.port_type[i] = port_type_array[i - 1];
490 }
491 }
492 /*
493 * Link sensing is allowed on the port if 3 conditions are true:
494 * 1. Both protocols are supported on the port.
495 * 2. Different types are supported on the port
496 * 3. FW declared that it supports link sensing
497 */
498 mlx4_priv(dev)->sense.sense_allowed[i] =
499 ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) &&
500 (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
501 (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT));
502
503 /*
504 * If "default_sense" bit is set, we move the port to "AUTO" mode
505 * and perform sense_port FW command to try and set the correct
506 * port type from beginning
507 */
508 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) {
509 enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE;
510 dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO;
511 mlx4_SENSE_PORT(dev, i, &sensed_port);
512 if (sensed_port != MLX4_PORT_TYPE_NONE)
513 dev->caps.port_type[i] = sensed_port;
514 } else {
515 dev->caps.possible_type[i] = dev->caps.port_type[i];
516 }
517
518 if (dev->caps.log_num_macs > dev_cap->port_cap[i].log_max_macs) {
519 dev->caps.log_num_macs = dev_cap->port_cap[i].log_max_macs;
520 mlx4_warn(dev, "Requested number of MACs is too much for port %d, reducing to %d\n",
521 i, 1 << dev->caps.log_num_macs);
522 }
523 if (dev->caps.log_num_vlans > dev_cap->port_cap[i].log_max_vlans) {
524 dev->caps.log_num_vlans = dev_cap->port_cap[i].log_max_vlans;
525 mlx4_warn(dev, "Requested number of VLANs is too much for port %d, reducing to %d\n",
526 i, 1 << dev->caps.log_num_vlans);
527 }
528 }
529
530 if (mlx4_is_master(dev) && (dev->caps.num_ports == 2) &&
531 (port_type_array[0] == MLX4_PORT_TYPE_IB) &&
532 (port_type_array[1] == MLX4_PORT_TYPE_ETH)) {
533 mlx4_warn(dev,
534 "Granular QoS per VF not supported with IB/Eth configuration\n");
535 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_QOS_VPP;
536 }
537
538 dev->caps.max_counters = dev_cap->max_counters;
539
540 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
541 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
542 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
543 (1 << dev->caps.log_num_macs) *
544 (1 << dev->caps.log_num_vlans) *
545 dev->caps.num_ports;
546 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
547
548 if (dev_cap->dmfs_high_rate_qpn_base > 0 &&
549 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)
550 dev->caps.dmfs_high_rate_qpn_base = dev_cap->dmfs_high_rate_qpn_base;
551 else
552 dev->caps.dmfs_high_rate_qpn_base =
553 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
554
555 if (dev_cap->dmfs_high_rate_qpn_range > 0 &&
556 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN) {
557 dev->caps.dmfs_high_rate_qpn_range = dev_cap->dmfs_high_rate_qpn_range;
558 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DEFAULT;
559 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_FS_A0;
560 } else {
561 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_NOT_SUPPORTED;
562 dev->caps.dmfs_high_rate_qpn_base =
563 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
564 dev->caps.dmfs_high_rate_qpn_range = MLX4_A0_STEERING_TABLE_SIZE;
565 }
566
567 dev->caps.rl_caps = dev_cap->rl_caps;
568
569 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_RSS_RAW_ETH] =
570 dev->caps.dmfs_high_rate_qpn_range;
571
572 dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
573 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
574 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
575 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
576
577 dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
578
579 if (!enable_64b_cqe_eqe && !mlx4_is_slave(dev)) {
580 if (dev_cap->flags &
581 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) {
582 mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n");
583 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
584 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
585 }
586
587 if (dev_cap->flags2 &
588 (MLX4_DEV_CAP_FLAG2_CQE_STRIDE |
589 MLX4_DEV_CAP_FLAG2_EQE_STRIDE)) {
590 mlx4_warn(dev, "Disabling EQE/CQE stride per user request\n");
591 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
592 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
593 }
594 }
595
596 if ((dev->caps.flags &
597 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) &&
598 mlx4_is_master(dev))
599 dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE;
600
601 if (!mlx4_is_slave(dev)) {
602 mlx4_enable_cqe_eqe_stride(dev);
603 dev->caps.alloc_res_qp_mask =
604 (dev->caps.bf_reg_size ? MLX4_RESERVE_ETH_BF_QP : 0) |
605 MLX4_RESERVE_A0_QP;
606
607 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) &&
608 dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
609 mlx4_warn(dev, "Old device ETS support detected\n");
610 mlx4_warn(dev, "Consider upgrading device FW.\n");
611 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_ETS_CFG;
612 }
613
614 } else {
615 dev->caps.alloc_res_qp_mask = 0;
616 }
617
618 mlx4_enable_ignore_fcs(dev);
619
620 return 0;
621 }
622
623 static int mlx4_get_pcie_dev_link_caps(struct mlx4_dev *dev,
624 enum pci_bus_speed *speed,
625 enum pcie_link_width *width)
626 {
627 u32 lnkcap1, lnkcap2;
628 int err1, err2;
629
630 #define PCIE_MLW_CAP_SHIFT 4 /* start of MLW mask in link capabilities */
631
632 *speed = PCI_SPEED_UNKNOWN;
633 *width = PCIE_LNK_WIDTH_UNKNOWN;
634
635 err1 = pcie_capability_read_dword(dev->persist->pdev, PCI_EXP_LNKCAP,
636 &lnkcap1);
637 err2 = pcie_capability_read_dword(dev->persist->pdev, PCI_EXP_LNKCAP2,
638 &lnkcap2);
639 if (!err2 && lnkcap2) { /* PCIe r3.0-compliant */
640 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
641 *speed = PCIE_SPEED_8_0GT;
642 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
643 *speed = PCIE_SPEED_5_0GT;
644 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
645 *speed = PCIE_SPEED_2_5GT;
646 }
647 if (!err1) {
648 *width = (lnkcap1 & PCI_EXP_LNKCAP_MLW) >> PCIE_MLW_CAP_SHIFT;
649 if (!lnkcap2) { /* pre-r3.0 */
650 if (lnkcap1 & PCI_EXP_LNKCAP_SLS_5_0GB)
651 *speed = PCIE_SPEED_5_0GT;
652 else if (lnkcap1 & PCI_EXP_LNKCAP_SLS_2_5GB)
653 *speed = PCIE_SPEED_2_5GT;
654 }
655 }
656
657 if (*speed == PCI_SPEED_UNKNOWN || *width == PCIE_LNK_WIDTH_UNKNOWN) {
658 return err1 ? err1 :
659 err2 ? err2 : -EINVAL;
660 }
661 return 0;
662 }
663
664 static void mlx4_check_pcie_caps(struct mlx4_dev *dev)
665 {
666 enum pcie_link_width width, width_cap;
667 enum pci_bus_speed speed, speed_cap;
668 int err;
669
670 #define PCIE_SPEED_STR(speed) \
671 (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" : \
672 speed == PCIE_SPEED_5_0GT ? "5.0GT/s" : \
673 speed == PCIE_SPEED_2_5GT ? "2.5GT/s" : \
674 "Unknown")
675
676 err = mlx4_get_pcie_dev_link_caps(dev, &speed_cap, &width_cap);
677 if (err) {
678 mlx4_warn(dev,
679 "Unable to determine PCIe device BW capabilities\n");
680 return;
681 }
682
683 err = pcie_get_minimum_link(dev->persist->pdev, &speed, &width);
684 if (err || speed == PCI_SPEED_UNKNOWN ||
685 width == PCIE_LNK_WIDTH_UNKNOWN) {
686 mlx4_warn(dev,
687 "Unable to determine PCI device chain minimum BW\n");
688 return;
689 }
690
691 if (width != width_cap || speed != speed_cap)
692 mlx4_warn(dev,
693 "PCIe BW is different than device's capability\n");
694
695 mlx4_info(dev, "PCIe link speed is %s, device supports %s\n",
696 PCIE_SPEED_STR(speed), PCIE_SPEED_STR(speed_cap));
697 mlx4_info(dev, "PCIe link width is x%d, device supports x%d\n",
698 width, width_cap);
699 return;
700 }
701
702 /*The function checks if there are live vf, return the num of them*/
703 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
704 {
705 struct mlx4_priv *priv = mlx4_priv(dev);
706 struct mlx4_slave_state *s_state;
707 int i;
708 int ret = 0;
709
710 for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
711 s_state = &priv->mfunc.master.slave_state[i];
712 if (s_state->active && s_state->last_cmd !=
713 MLX4_COMM_CMD_RESET) {
714 mlx4_warn(dev, "%s: slave: %d is still active\n",
715 __func__, i);
716 ret++;
717 }
718 }
719 return ret;
720 }
721
722 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
723 {
724 u32 qk = MLX4_RESERVED_QKEY_BASE;
725
726 if (qpn >= dev->phys_caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
727 qpn < dev->phys_caps.base_proxy_sqpn)
728 return -EINVAL;
729
730 if (qpn >= dev->phys_caps.base_tunnel_sqpn)
731 /* tunnel qp */
732 qk += qpn - dev->phys_caps.base_tunnel_sqpn;
733 else
734 qk += qpn - dev->phys_caps.base_proxy_sqpn;
735 *qkey = qk;
736 return 0;
737 }
738 EXPORT_SYMBOL(mlx4_get_parav_qkey);
739
740 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val)
741 {
742 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
743
744 if (!mlx4_is_master(dev))
745 return;
746
747 priv->virt2phys_pkey[slave][port - 1][i] = val;
748 }
749 EXPORT_SYMBOL(mlx4_sync_pkey_table);
750
751 void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid)
752 {
753 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
754
755 if (!mlx4_is_master(dev))
756 return;
757
758 priv->slave_node_guids[slave] = guid;
759 }
760 EXPORT_SYMBOL(mlx4_put_slave_node_guid);
761
762 __be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave)
763 {
764 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
765
766 if (!mlx4_is_master(dev))
767 return 0;
768
769 return priv->slave_node_guids[slave];
770 }
771 EXPORT_SYMBOL(mlx4_get_slave_node_guid);
772
773 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
774 {
775 struct mlx4_priv *priv = mlx4_priv(dev);
776 struct mlx4_slave_state *s_slave;
777
778 if (!mlx4_is_master(dev))
779 return 0;
780
781 s_slave = &priv->mfunc.master.slave_state[slave];
782 return !!s_slave->active;
783 }
784 EXPORT_SYMBOL(mlx4_is_slave_active);
785
786 void mlx4_handle_eth_header_mcast_prio(struct mlx4_net_trans_rule_hw_ctrl *ctrl,
787 struct _rule_hw *eth_header)
788 {
789 if (is_multicast_ether_addr(eth_header->eth.dst_mac) ||
790 is_broadcast_ether_addr(eth_header->eth.dst_mac)) {
791 struct mlx4_net_trans_rule_hw_eth *eth =
792 (struct mlx4_net_trans_rule_hw_eth *)eth_header;
793 struct _rule_hw *next_rule = (struct _rule_hw *)(eth + 1);
794 bool last_rule = next_rule->size == 0 && next_rule->id == 0 &&
795 next_rule->rsvd == 0;
796
797 if (last_rule)
798 ctrl->prio = cpu_to_be16(MLX4_DOMAIN_NIC);
799 }
800 }
801 EXPORT_SYMBOL(mlx4_handle_eth_header_mcast_prio);
802
803 static void slave_adjust_steering_mode(struct mlx4_dev *dev,
804 struct mlx4_dev_cap *dev_cap,
805 struct mlx4_init_hca_param *hca_param)
806 {
807 dev->caps.steering_mode = hca_param->steering_mode;
808 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
809 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
810 dev->caps.fs_log_max_ucast_qp_range_size =
811 dev_cap->fs_log_max_ucast_qp_range_size;
812 } else
813 dev->caps.num_qp_per_mgm =
814 4 * ((1 << hca_param->log_mc_entry_sz)/16 - 2);
815
816 mlx4_dbg(dev, "Steering mode is: %s\n",
817 mlx4_steering_mode_str(dev->caps.steering_mode));
818 }
819
820 static int mlx4_slave_cap(struct mlx4_dev *dev)
821 {
822 int err;
823 u32 page_size;
824 struct mlx4_dev_cap dev_cap;
825 struct mlx4_func_cap func_cap;
826 struct mlx4_init_hca_param hca_param;
827 u8 i;
828
829 memset(&hca_param, 0, sizeof(hca_param));
830 err = mlx4_QUERY_HCA(dev, &hca_param);
831 if (err) {
832 mlx4_err(dev, "QUERY_HCA command failed, aborting\n");
833 return err;
834 }
835
836 /* fail if the hca has an unknown global capability
837 * at this time global_caps should be always zeroed
838 */
839 if (hca_param.global_caps) {
840 mlx4_err(dev, "Unknown hca global capabilities\n");
841 return -EINVAL;
842 }
843
844 dev->caps.hca_core_clock = hca_param.hca_core_clock;
845
846 memset(&dev_cap, 0, sizeof(dev_cap));
847 dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
848 err = mlx4_dev_cap(dev, &dev_cap);
849 if (err) {
850 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
851 return err;
852 }
853
854 err = mlx4_QUERY_FW(dev);
855 if (err)
856 mlx4_err(dev, "QUERY_FW command failed: could not get FW version\n");
857
858 page_size = ~dev->caps.page_size_cap + 1;
859 mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
860 if (page_size > PAGE_SIZE) {
861 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
862 page_size, PAGE_SIZE);
863 return -ENODEV;
864 }
865
866 /* Set uar_page_shift for VF */
867 dev->uar_page_shift = hca_param.uar_page_sz + 12;
868
869 /* Make sure the master uar page size is valid */
870 if (dev->uar_page_shift > PAGE_SHIFT) {
871 mlx4_err(dev,
872 "Invalid configuration: uar page size is larger than system page size\n");
873 return -ENODEV;
874 }
875
876 /* Set reserved_uars based on the uar_page_shift */
877 mlx4_set_num_reserved_uars(dev, &dev_cap);
878
879 /* Although uar page size in FW differs from system page size,
880 * upper software layers (mlx4_ib, mlx4_en and part of mlx4_core)
881 * still works with assumption that uar page size == system page size
882 */
883 dev->caps.uar_page_size = PAGE_SIZE;
884
885 memset(&func_cap, 0, sizeof(func_cap));
886 err = mlx4_QUERY_FUNC_CAP(dev, 0, &func_cap);
887 if (err) {
888 mlx4_err(dev, "QUERY_FUNC_CAP general command failed, aborting (%d)\n",
889 err);
890 return err;
891 }
892
893 if ((func_cap.pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
894 PF_CONTEXT_BEHAVIOUR_MASK) {
895 mlx4_err(dev, "Unknown pf context behaviour %x known flags %x\n",
896 func_cap.pf_context_behaviour, PF_CONTEXT_BEHAVIOUR_MASK);
897 return -EINVAL;
898 }
899
900 dev->caps.num_ports = func_cap.num_ports;
901 dev->quotas.qp = func_cap.qp_quota;
902 dev->quotas.srq = func_cap.srq_quota;
903 dev->quotas.cq = func_cap.cq_quota;
904 dev->quotas.mpt = func_cap.mpt_quota;
905 dev->quotas.mtt = func_cap.mtt_quota;
906 dev->caps.num_qps = 1 << hca_param.log_num_qps;
907 dev->caps.num_srqs = 1 << hca_param.log_num_srqs;
908 dev->caps.num_cqs = 1 << hca_param.log_num_cqs;
909 dev->caps.num_mpts = 1 << hca_param.log_mpt_sz;
910 dev->caps.num_eqs = func_cap.max_eq;
911 dev->caps.reserved_eqs = func_cap.reserved_eq;
912 dev->caps.reserved_lkey = func_cap.reserved_lkey;
913 dev->caps.num_pds = MLX4_NUM_PDS;
914 dev->caps.num_mgms = 0;
915 dev->caps.num_amgms = 0;
916
917 if (dev->caps.num_ports > MLX4_MAX_PORTS) {
918 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
919 dev->caps.num_ports, MLX4_MAX_PORTS);
920 return -ENODEV;
921 }
922
923 mlx4_replace_zero_macs(dev);
924
925 dev->caps.qp0_qkey = kcalloc(dev->caps.num_ports, sizeof(u32), GFP_KERNEL);
926 dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
927 dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
928 dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
929 dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
930
931 if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy ||
932 !dev->caps.qp1_tunnel || !dev->caps.qp1_proxy ||
933 !dev->caps.qp0_qkey) {
934 err = -ENOMEM;
935 goto err_mem;
936 }
937
938 for (i = 1; i <= dev->caps.num_ports; ++i) {
939 err = mlx4_QUERY_FUNC_CAP(dev, i, &func_cap);
940 if (err) {
941 mlx4_err(dev, "QUERY_FUNC_CAP port command failed for port %d, aborting (%d)\n",
942 i, err);
943 goto err_mem;
944 }
945 dev->caps.qp0_qkey[i - 1] = func_cap.qp0_qkey;
946 dev->caps.qp0_tunnel[i - 1] = func_cap.qp0_tunnel_qpn;
947 dev->caps.qp0_proxy[i - 1] = func_cap.qp0_proxy_qpn;
948 dev->caps.qp1_tunnel[i - 1] = func_cap.qp1_tunnel_qpn;
949 dev->caps.qp1_proxy[i - 1] = func_cap.qp1_proxy_qpn;
950 dev->caps.port_mask[i] = dev->caps.port_type[i];
951 dev->caps.phys_port_id[i] = func_cap.phys_port_id;
952 err = mlx4_get_slave_pkey_gid_tbl_len(dev, i,
953 &dev->caps.gid_table_len[i],
954 &dev->caps.pkey_table_len[i]);
955 if (err)
956 goto err_mem;
957 }
958
959 if (dev->caps.uar_page_size * (dev->caps.num_uars -
960 dev->caps.reserved_uars) >
961 pci_resource_len(dev->persist->pdev,
962 2)) {
963 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
964 dev->caps.uar_page_size * dev->caps.num_uars,
965 (unsigned long long)
966 pci_resource_len(dev->persist->pdev, 2));
967 err = -ENOMEM;
968 goto err_mem;
969 }
970
971 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) {
972 dev->caps.eqe_size = 64;
973 dev->caps.eqe_factor = 1;
974 } else {
975 dev->caps.eqe_size = 32;
976 dev->caps.eqe_factor = 0;
977 }
978
979 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) {
980 dev->caps.cqe_size = 64;
981 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
982 } else {
983 dev->caps.cqe_size = 32;
984 }
985
986 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_EQE_STRIDE_ENABLED) {
987 dev->caps.eqe_size = hca_param.eqe_size;
988 dev->caps.eqe_factor = 0;
989 }
990
991 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_CQE_STRIDE_ENABLED) {
992 dev->caps.cqe_size = hca_param.cqe_size;
993 /* User still need to know when CQE > 32B */
994 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
995 }
996
997 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
998 mlx4_warn(dev, "Timestamping is not supported in slave mode\n");
999
1000 slave_adjust_steering_mode(dev, &dev_cap, &hca_param);
1001 mlx4_dbg(dev, "RSS support for IP fragments is %s\n",
1002 hca_param.rss_ip_frags ? "on" : "off");
1003
1004 if (func_cap.extra_flags & MLX4_QUERY_FUNC_FLAGS_BF_RES_QP &&
1005 dev->caps.bf_reg_size)
1006 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_ETH_BF_QP;
1007
1008 if (func_cap.extra_flags & MLX4_QUERY_FUNC_FLAGS_A0_RES_QP)
1009 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_A0_QP;
1010
1011 return 0;
1012
1013 err_mem:
1014 kfree(dev->caps.qp0_qkey);
1015 kfree(dev->caps.qp0_tunnel);
1016 kfree(dev->caps.qp0_proxy);
1017 kfree(dev->caps.qp1_tunnel);
1018 kfree(dev->caps.qp1_proxy);
1019 dev->caps.qp0_qkey = NULL;
1020 dev->caps.qp0_tunnel = NULL;
1021 dev->caps.qp0_proxy = NULL;
1022 dev->caps.qp1_tunnel = NULL;
1023 dev->caps.qp1_proxy = NULL;
1024
1025 return err;
1026 }
1027
1028 static void mlx4_request_modules(struct mlx4_dev *dev)
1029 {
1030 int port;
1031 int has_ib_port = false;
1032 int has_eth_port = false;
1033 #define EN_DRV_NAME "mlx4_en"
1034 #define IB_DRV_NAME "mlx4_ib"
1035
1036 for (port = 1; port <= dev->caps.num_ports; port++) {
1037 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
1038 has_ib_port = true;
1039 else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
1040 has_eth_port = true;
1041 }
1042
1043 if (has_eth_port)
1044 request_module_nowait(EN_DRV_NAME);
1045 if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
1046 request_module_nowait(IB_DRV_NAME);
1047 }
1048
1049 /*
1050 * Change the port configuration of the device.
1051 * Every user of this function must hold the port mutex.
1052 */
1053 int mlx4_change_port_types(struct mlx4_dev *dev,
1054 enum mlx4_port_type *port_types)
1055 {
1056 int err = 0;
1057 int change = 0;
1058 int port;
1059
1060 for (port = 0; port < dev->caps.num_ports; port++) {
1061 /* Change the port type only if the new type is different
1062 * from the current, and not set to Auto */
1063 if (port_types[port] != dev->caps.port_type[port + 1])
1064 change = 1;
1065 }
1066 if (change) {
1067 mlx4_unregister_device(dev);
1068 for (port = 1; port <= dev->caps.num_ports; port++) {
1069 mlx4_CLOSE_PORT(dev, port);
1070 dev->caps.port_type[port] = port_types[port - 1];
1071 err = mlx4_SET_PORT(dev, port, -1);
1072 if (err) {
1073 mlx4_err(dev, "Failed to set port %d, aborting\n",
1074 port);
1075 goto out;
1076 }
1077 }
1078 mlx4_set_port_mask(dev);
1079 err = mlx4_register_device(dev);
1080 if (err) {
1081 mlx4_err(dev, "Failed to register device\n");
1082 goto out;
1083 }
1084 mlx4_request_modules(dev);
1085 }
1086
1087 out:
1088 return err;
1089 }
1090
1091 static ssize_t show_port_type(struct device *dev,
1092 struct device_attribute *attr,
1093 char *buf)
1094 {
1095 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1096 port_attr);
1097 struct mlx4_dev *mdev = info->dev;
1098 char type[8];
1099
1100 sprintf(type, "%s",
1101 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
1102 "ib" : "eth");
1103 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
1104 sprintf(buf, "auto (%s)\n", type);
1105 else
1106 sprintf(buf, "%s\n", type);
1107
1108 return strlen(buf);
1109 }
1110
1111 static int __set_port_type(struct mlx4_port_info *info,
1112 enum mlx4_port_type port_type)
1113 {
1114 struct mlx4_dev *mdev = info->dev;
1115 struct mlx4_priv *priv = mlx4_priv(mdev);
1116 enum mlx4_port_type types[MLX4_MAX_PORTS];
1117 enum mlx4_port_type new_types[MLX4_MAX_PORTS];
1118 int i;
1119 int err = 0;
1120
1121 if ((port_type & mdev->caps.supported_type[info->port]) != port_type) {
1122 mlx4_err(mdev,
1123 "Requested port type for port %d is not supported on this HCA\n",
1124 info->port);
1125 err = -EINVAL;
1126 goto err_sup;
1127 }
1128
1129 mlx4_stop_sense(mdev);
1130 mutex_lock(&priv->port_mutex);
1131 info->tmp_type = port_type;
1132
1133 /* Possible type is always the one that was delivered */
1134 mdev->caps.possible_type[info->port] = info->tmp_type;
1135
1136 for (i = 0; i < mdev->caps.num_ports; i++) {
1137 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
1138 mdev->caps.possible_type[i+1];
1139 if (types[i] == MLX4_PORT_TYPE_AUTO)
1140 types[i] = mdev->caps.port_type[i+1];
1141 }
1142
1143 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
1144 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
1145 for (i = 1; i <= mdev->caps.num_ports; i++) {
1146 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
1147 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
1148 err = -EINVAL;
1149 }
1150 }
1151 }
1152 if (err) {
1153 mlx4_err(mdev, "Auto sensing is not supported on this HCA. Set only 'eth' or 'ib' for both ports (should be the same)\n");
1154 goto out;
1155 }
1156
1157 mlx4_do_sense_ports(mdev, new_types, types);
1158
1159 err = mlx4_check_port_params(mdev, new_types);
1160 if (err)
1161 goto out;
1162
1163 /* We are about to apply the changes after the configuration
1164 * was verified, no need to remember the temporary types
1165 * any more */
1166 for (i = 0; i < mdev->caps.num_ports; i++)
1167 priv->port[i + 1].tmp_type = 0;
1168
1169 err = mlx4_change_port_types(mdev, new_types);
1170
1171 out:
1172 mlx4_start_sense(mdev);
1173 mutex_unlock(&priv->port_mutex);
1174 err_sup:
1175 return err;
1176 }
1177
1178 static ssize_t set_port_type(struct device *dev,
1179 struct device_attribute *attr,
1180 const char *buf, size_t count)
1181 {
1182 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1183 port_attr);
1184 struct mlx4_dev *mdev = info->dev;
1185 enum mlx4_port_type port_type;
1186 static DEFINE_MUTEX(set_port_type_mutex);
1187 int err;
1188
1189 mutex_lock(&set_port_type_mutex);
1190
1191 if (!strcmp(buf, "ib\n")) {
1192 port_type = MLX4_PORT_TYPE_IB;
1193 } else if (!strcmp(buf, "eth\n")) {
1194 port_type = MLX4_PORT_TYPE_ETH;
1195 } else if (!strcmp(buf, "auto\n")) {
1196 port_type = MLX4_PORT_TYPE_AUTO;
1197 } else {
1198 mlx4_err(mdev, "%s is not supported port type\n", buf);
1199 err = -EINVAL;
1200 goto err_out;
1201 }
1202
1203 err = __set_port_type(info, port_type);
1204
1205 err_out:
1206 mutex_unlock(&set_port_type_mutex);
1207
1208 return err ? err : count;
1209 }
1210
1211 enum ibta_mtu {
1212 IB_MTU_256 = 1,
1213 IB_MTU_512 = 2,
1214 IB_MTU_1024 = 3,
1215 IB_MTU_2048 = 4,
1216 IB_MTU_4096 = 5
1217 };
1218
1219 static inline int int_to_ibta_mtu(int mtu)
1220 {
1221 switch (mtu) {
1222 case 256: return IB_MTU_256;
1223 case 512: return IB_MTU_512;
1224 case 1024: return IB_MTU_1024;
1225 case 2048: return IB_MTU_2048;
1226 case 4096: return IB_MTU_4096;
1227 default: return -1;
1228 }
1229 }
1230
1231 static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
1232 {
1233 switch (mtu) {
1234 case IB_MTU_256: return 256;
1235 case IB_MTU_512: return 512;
1236 case IB_MTU_1024: return 1024;
1237 case IB_MTU_2048: return 2048;
1238 case IB_MTU_4096: return 4096;
1239 default: return -1;
1240 }
1241 }
1242
1243 static ssize_t show_port_ib_mtu(struct device *dev,
1244 struct device_attribute *attr,
1245 char *buf)
1246 {
1247 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1248 port_mtu_attr);
1249 struct mlx4_dev *mdev = info->dev;
1250
1251 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
1252 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
1253
1254 sprintf(buf, "%d\n",
1255 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
1256 return strlen(buf);
1257 }
1258
1259 static ssize_t set_port_ib_mtu(struct device *dev,
1260 struct device_attribute *attr,
1261 const char *buf, size_t count)
1262 {
1263 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1264 port_mtu_attr);
1265 struct mlx4_dev *mdev = info->dev;
1266 struct mlx4_priv *priv = mlx4_priv(mdev);
1267 int err, port, mtu, ibta_mtu = -1;
1268
1269 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
1270 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
1271 return -EINVAL;
1272 }
1273
1274 err = kstrtoint(buf, 0, &mtu);
1275 if (!err)
1276 ibta_mtu = int_to_ibta_mtu(mtu);
1277
1278 if (err || ibta_mtu < 0) {
1279 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
1280 return -EINVAL;
1281 }
1282
1283 mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
1284
1285 mlx4_stop_sense(mdev);
1286 mutex_lock(&priv->port_mutex);
1287 mlx4_unregister_device(mdev);
1288 for (port = 1; port <= mdev->caps.num_ports; port++) {
1289 mlx4_CLOSE_PORT(mdev, port);
1290 err = mlx4_SET_PORT(mdev, port, -1);
1291 if (err) {
1292 mlx4_err(mdev, "Failed to set port %d, aborting\n",
1293 port);
1294 goto err_set_port;
1295 }
1296 }
1297 err = mlx4_register_device(mdev);
1298 err_set_port:
1299 mutex_unlock(&priv->port_mutex);
1300 mlx4_start_sense(mdev);
1301 return err ? err : count;
1302 }
1303
1304 /* bond for multi-function device */
1305 #define MAX_MF_BOND_ALLOWED_SLAVES 63
1306 static int mlx4_mf_bond(struct mlx4_dev *dev)
1307 {
1308 int err = 0;
1309 int nvfs;
1310 struct mlx4_slaves_pport slaves_port1;
1311 struct mlx4_slaves_pport slaves_port2;
1312 DECLARE_BITMAP(slaves_port_1_2, MLX4_MFUNC_MAX);
1313
1314 slaves_port1 = mlx4_phys_to_slaves_pport(dev, 1);
1315 slaves_port2 = mlx4_phys_to_slaves_pport(dev, 2);
1316 bitmap_and(slaves_port_1_2,
1317 slaves_port1.slaves, slaves_port2.slaves,
1318 dev->persist->num_vfs + 1);
1319
1320 /* only single port vfs are allowed */
1321 if (bitmap_weight(slaves_port_1_2, dev->persist->num_vfs + 1) > 1) {
1322 mlx4_warn(dev, "HA mode unsupported for dual ported VFs\n");
1323 return -EINVAL;
1324 }
1325
1326 /* number of virtual functions is number of total functions minus one
1327 * physical function for each port.
1328 */
1329 nvfs = bitmap_weight(slaves_port1.slaves, dev->persist->num_vfs + 1) +
1330 bitmap_weight(slaves_port2.slaves, dev->persist->num_vfs + 1) - 2;
1331
1332 /* limit on maximum allowed VFs */
1333 if (nvfs > MAX_MF_BOND_ALLOWED_SLAVES) {
1334 mlx4_warn(dev, "HA mode is not supported for %d VFs (max %d are allowed)\n",
1335 nvfs, MAX_MF_BOND_ALLOWED_SLAVES);
1336 return -EINVAL;
1337 }
1338
1339 if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED) {
1340 mlx4_warn(dev, "HA mode unsupported for NON DMFS steering\n");
1341 return -EINVAL;
1342 }
1343
1344 err = mlx4_bond_mac_table(dev);
1345 if (err)
1346 return err;
1347 err = mlx4_bond_vlan_table(dev);
1348 if (err)
1349 goto err1;
1350 err = mlx4_bond_fs_rules(dev);
1351 if (err)
1352 goto err2;
1353
1354 return 0;
1355 err2:
1356 (void)mlx4_unbond_vlan_table(dev);
1357 err1:
1358 (void)mlx4_unbond_mac_table(dev);
1359 return err;
1360 }
1361
1362 static int mlx4_mf_unbond(struct mlx4_dev *dev)
1363 {
1364 int ret, ret1;
1365
1366 ret = mlx4_unbond_fs_rules(dev);
1367 if (ret)
1368 mlx4_warn(dev, "multifunction unbond for flow rules failedi (%d)\n", ret);
1369 ret1 = mlx4_unbond_mac_table(dev);
1370 if (ret1) {
1371 mlx4_warn(dev, "multifunction unbond for MAC table failed (%d)\n", ret1);
1372 ret = ret1;
1373 }
1374 ret1 = mlx4_unbond_vlan_table(dev);
1375 if (ret1) {
1376 mlx4_warn(dev, "multifunction unbond for VLAN table failed (%d)\n", ret1);
1377 ret = ret1;
1378 }
1379 return ret;
1380 }
1381
1382 int mlx4_bond(struct mlx4_dev *dev)
1383 {
1384 int ret = 0;
1385 struct mlx4_priv *priv = mlx4_priv(dev);
1386
1387 mutex_lock(&priv->bond_mutex);
1388
1389 if (!mlx4_is_bonded(dev)) {
1390 ret = mlx4_do_bond(dev, true);
1391 if (ret)
1392 mlx4_err(dev, "Failed to bond device: %d\n", ret);
1393 if (!ret && mlx4_is_master(dev)) {
1394 ret = mlx4_mf_bond(dev);
1395 if (ret) {
1396 mlx4_err(dev, "bond for multifunction failed\n");
1397 mlx4_do_bond(dev, false);
1398 }
1399 }
1400 }
1401
1402 mutex_unlock(&priv->bond_mutex);
1403 if (!ret)
1404 mlx4_dbg(dev, "Device is bonded\n");
1405
1406 return ret;
1407 }
1408 EXPORT_SYMBOL_GPL(mlx4_bond);
1409
1410 int mlx4_unbond(struct mlx4_dev *dev)
1411 {
1412 int ret = 0;
1413 struct mlx4_priv *priv = mlx4_priv(dev);
1414
1415 mutex_lock(&priv->bond_mutex);
1416
1417 if (mlx4_is_bonded(dev)) {
1418 int ret2 = 0;
1419
1420 ret = mlx4_do_bond(dev, false);
1421 if (ret)
1422 mlx4_err(dev, "Failed to unbond device: %d\n", ret);
1423 if (mlx4_is_master(dev))
1424 ret2 = mlx4_mf_unbond(dev);
1425 if (ret2) {
1426 mlx4_warn(dev, "Failed to unbond device for multifunction (%d)\n", ret2);
1427 ret = ret2;
1428 }
1429 }
1430
1431 mutex_unlock(&priv->bond_mutex);
1432 if (!ret)
1433 mlx4_dbg(dev, "Device is unbonded\n");
1434
1435 return ret;
1436 }
1437 EXPORT_SYMBOL_GPL(mlx4_unbond);
1438
1439
1440 int mlx4_port_map_set(struct mlx4_dev *dev, struct mlx4_port_map *v2p)
1441 {
1442 u8 port1 = v2p->port1;
1443 u8 port2 = v2p->port2;
1444 struct mlx4_priv *priv = mlx4_priv(dev);
1445 int err;
1446
1447 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP))
1448 return -EOPNOTSUPP;
1449
1450 mutex_lock(&priv->bond_mutex);
1451
1452 /* zero means keep current mapping for this port */
1453 if (port1 == 0)
1454 port1 = priv->v2p.port1;
1455 if (port2 == 0)
1456 port2 = priv->v2p.port2;
1457
1458 if ((port1 < 1) || (port1 > MLX4_MAX_PORTS) ||
1459 (port2 < 1) || (port2 > MLX4_MAX_PORTS) ||
1460 (port1 == 2 && port2 == 1)) {
1461 /* besides boundary checks cross mapping makes
1462 * no sense and therefore not allowed */
1463 err = -EINVAL;
1464 } else if ((port1 == priv->v2p.port1) &&
1465 (port2 == priv->v2p.port2)) {
1466 err = 0;
1467 } else {
1468 err = mlx4_virt2phy_port_map(dev, port1, port2);
1469 if (!err) {
1470 mlx4_dbg(dev, "port map changed: [%d][%d]\n",
1471 port1, port2);
1472 priv->v2p.port1 = port1;
1473 priv->v2p.port2 = port2;
1474 } else {
1475 mlx4_err(dev, "Failed to change port mape: %d\n", err);
1476 }
1477 }
1478
1479 mutex_unlock(&priv->bond_mutex);
1480 return err;
1481 }
1482 EXPORT_SYMBOL_GPL(mlx4_port_map_set);
1483
1484 static int mlx4_load_fw(struct mlx4_dev *dev)
1485 {
1486 struct mlx4_priv *priv = mlx4_priv(dev);
1487 int err;
1488
1489 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
1490 GFP_HIGHUSER | __GFP_NOWARN, 0);
1491 if (!priv->fw.fw_icm) {
1492 mlx4_err(dev, "Couldn't allocate FW area, aborting\n");
1493 return -ENOMEM;
1494 }
1495
1496 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
1497 if (err) {
1498 mlx4_err(dev, "MAP_FA command failed, aborting\n");
1499 goto err_free;
1500 }
1501
1502 err = mlx4_RUN_FW(dev);
1503 if (err) {
1504 mlx4_err(dev, "RUN_FW command failed, aborting\n");
1505 goto err_unmap_fa;
1506 }
1507
1508 return 0;
1509
1510 err_unmap_fa:
1511 mlx4_UNMAP_FA(dev);
1512
1513 err_free:
1514 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1515 return err;
1516 }
1517
1518 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
1519 int cmpt_entry_sz)
1520 {
1521 struct mlx4_priv *priv = mlx4_priv(dev);
1522 int err;
1523 int num_eqs;
1524
1525 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
1526 cmpt_base +
1527 ((u64) (MLX4_CMPT_TYPE_QP *
1528 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1529 cmpt_entry_sz, dev->caps.num_qps,
1530 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1531 0, 0);
1532 if (err)
1533 goto err;
1534
1535 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
1536 cmpt_base +
1537 ((u64) (MLX4_CMPT_TYPE_SRQ *
1538 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1539 cmpt_entry_sz, dev->caps.num_srqs,
1540 dev->caps.reserved_srqs, 0, 0);
1541 if (err)
1542 goto err_qp;
1543
1544 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
1545 cmpt_base +
1546 ((u64) (MLX4_CMPT_TYPE_CQ *
1547 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1548 cmpt_entry_sz, dev->caps.num_cqs,
1549 dev->caps.reserved_cqs, 0, 0);
1550 if (err)
1551 goto err_srq;
1552
1553 num_eqs = dev->phys_caps.num_phys_eqs;
1554 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
1555 cmpt_base +
1556 ((u64) (MLX4_CMPT_TYPE_EQ *
1557 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1558 cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
1559 if (err)
1560 goto err_cq;
1561
1562 return 0;
1563
1564 err_cq:
1565 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1566
1567 err_srq:
1568 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1569
1570 err_qp:
1571 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1572
1573 err:
1574 return err;
1575 }
1576
1577 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
1578 struct mlx4_init_hca_param *init_hca, u64 icm_size)
1579 {
1580 struct mlx4_priv *priv = mlx4_priv(dev);
1581 u64 aux_pages;
1582 int num_eqs;
1583 int err;
1584
1585 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
1586 if (err) {
1587 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting\n");
1588 return err;
1589 }
1590
1591 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory\n",
1592 (unsigned long long) icm_size >> 10,
1593 (unsigned long long) aux_pages << 2);
1594
1595 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
1596 GFP_HIGHUSER | __GFP_NOWARN, 0);
1597 if (!priv->fw.aux_icm) {
1598 mlx4_err(dev, "Couldn't allocate aux memory, aborting\n");
1599 return -ENOMEM;
1600 }
1601
1602 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
1603 if (err) {
1604 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting\n");
1605 goto err_free_aux;
1606 }
1607
1608 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
1609 if (err) {
1610 mlx4_err(dev, "Failed to map cMPT context memory, aborting\n");
1611 goto err_unmap_aux;
1612 }
1613
1614
1615 num_eqs = dev->phys_caps.num_phys_eqs;
1616 err = mlx4_init_icm_table(dev, &priv->eq_table.table,
1617 init_hca->eqc_base, dev_cap->eqc_entry_sz,
1618 num_eqs, num_eqs, 0, 0);
1619 if (err) {
1620 mlx4_err(dev, "Failed to map EQ context memory, aborting\n");
1621 goto err_unmap_cmpt;
1622 }
1623
1624 /*
1625 * Reserved MTT entries must be aligned up to a cacheline
1626 * boundary, since the FW will write to them, while the driver
1627 * writes to all other MTT entries. (The variable
1628 * dev->caps.mtt_entry_sz below is really the MTT segment
1629 * size, not the raw entry size)
1630 */
1631 dev->caps.reserved_mtts =
1632 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
1633 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
1634
1635 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
1636 init_hca->mtt_base,
1637 dev->caps.mtt_entry_sz,
1638 dev->caps.num_mtts,
1639 dev->caps.reserved_mtts, 1, 0);
1640 if (err) {
1641 mlx4_err(dev, "Failed to map MTT context memory, aborting\n");
1642 goto err_unmap_eq;
1643 }
1644
1645 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
1646 init_hca->dmpt_base,
1647 dev_cap->dmpt_entry_sz,
1648 dev->caps.num_mpts,
1649 dev->caps.reserved_mrws, 1, 1);
1650 if (err) {
1651 mlx4_err(dev, "Failed to map dMPT context memory, aborting\n");
1652 goto err_unmap_mtt;
1653 }
1654
1655 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
1656 init_hca->qpc_base,
1657 dev_cap->qpc_entry_sz,
1658 dev->caps.num_qps,
1659 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1660 0, 0);
1661 if (err) {
1662 mlx4_err(dev, "Failed to map QP context memory, aborting\n");
1663 goto err_unmap_dmpt;
1664 }
1665
1666 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
1667 init_hca->auxc_base,
1668 dev_cap->aux_entry_sz,
1669 dev->caps.num_qps,
1670 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1671 0, 0);
1672 if (err) {
1673 mlx4_err(dev, "Failed to map AUXC context memory, aborting\n");
1674 goto err_unmap_qp;
1675 }
1676
1677 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
1678 init_hca->altc_base,
1679 dev_cap->altc_entry_sz,
1680 dev->caps.num_qps,
1681 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1682 0, 0);
1683 if (err) {
1684 mlx4_err(dev, "Failed to map ALTC context memory, aborting\n");
1685 goto err_unmap_auxc;
1686 }
1687
1688 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
1689 init_hca->rdmarc_base,
1690 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
1691 dev->caps.num_qps,
1692 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1693 0, 0);
1694 if (err) {
1695 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
1696 goto err_unmap_altc;
1697 }
1698
1699 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
1700 init_hca->cqc_base,
1701 dev_cap->cqc_entry_sz,
1702 dev->caps.num_cqs,
1703 dev->caps.reserved_cqs, 0, 0);
1704 if (err) {
1705 mlx4_err(dev, "Failed to map CQ context memory, aborting\n");
1706 goto err_unmap_rdmarc;
1707 }
1708
1709 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
1710 init_hca->srqc_base,
1711 dev_cap->srq_entry_sz,
1712 dev->caps.num_srqs,
1713 dev->caps.reserved_srqs, 0, 0);
1714 if (err) {
1715 mlx4_err(dev, "Failed to map SRQ context memory, aborting\n");
1716 goto err_unmap_cq;
1717 }
1718
1719 /*
1720 * For flow steering device managed mode it is required to use
1721 * mlx4_init_icm_table. For B0 steering mode it's not strictly
1722 * required, but for simplicity just map the whole multicast
1723 * group table now. The table isn't very big and it's a lot
1724 * easier than trying to track ref counts.
1725 */
1726 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1727 init_hca->mc_base,
1728 mlx4_get_mgm_entry_size(dev),
1729 dev->caps.num_mgms + dev->caps.num_amgms,
1730 dev->caps.num_mgms + dev->caps.num_amgms,
1731 0, 0);
1732 if (err) {
1733 mlx4_err(dev, "Failed to map MCG context memory, aborting\n");
1734 goto err_unmap_srq;
1735 }
1736
1737 return 0;
1738
1739 err_unmap_srq:
1740 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1741
1742 err_unmap_cq:
1743 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1744
1745 err_unmap_rdmarc:
1746 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1747
1748 err_unmap_altc:
1749 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1750
1751 err_unmap_auxc:
1752 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1753
1754 err_unmap_qp:
1755 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1756
1757 err_unmap_dmpt:
1758 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1759
1760 err_unmap_mtt:
1761 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1762
1763 err_unmap_eq:
1764 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1765
1766 err_unmap_cmpt:
1767 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1768 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1769 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1770 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1771
1772 err_unmap_aux:
1773 mlx4_UNMAP_ICM_AUX(dev);
1774
1775 err_free_aux:
1776 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1777
1778 return err;
1779 }
1780
1781 static void mlx4_free_icms(struct mlx4_dev *dev)
1782 {
1783 struct mlx4_priv *priv = mlx4_priv(dev);
1784
1785 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1786 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1787 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1788 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1789 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1790 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1791 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1792 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1793 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1794 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1795 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1796 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1797 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1798 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1799
1800 mlx4_UNMAP_ICM_AUX(dev);
1801 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1802 }
1803
1804 static void mlx4_slave_exit(struct mlx4_dev *dev)
1805 {
1806 struct mlx4_priv *priv = mlx4_priv(dev);
1807
1808 mutex_lock(&priv->cmd.slave_cmd_mutex);
1809 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP,
1810 MLX4_COMM_TIME))
1811 mlx4_warn(dev, "Failed to close slave function\n");
1812 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1813 }
1814
1815 static int map_bf_area(struct mlx4_dev *dev)
1816 {
1817 struct mlx4_priv *priv = mlx4_priv(dev);
1818 resource_size_t bf_start;
1819 resource_size_t bf_len;
1820 int err = 0;
1821
1822 if (!dev->caps.bf_reg_size)
1823 return -ENXIO;
1824
1825 bf_start = pci_resource_start(dev->persist->pdev, 2) +
1826 (dev->caps.num_uars << PAGE_SHIFT);
1827 bf_len = pci_resource_len(dev->persist->pdev, 2) -
1828 (dev->caps.num_uars << PAGE_SHIFT);
1829 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1830 if (!priv->bf_mapping)
1831 err = -ENOMEM;
1832
1833 return err;
1834 }
1835
1836 static void unmap_bf_area(struct mlx4_dev *dev)
1837 {
1838 if (mlx4_priv(dev)->bf_mapping)
1839 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1840 }
1841
1842 u64 mlx4_read_clock(struct mlx4_dev *dev)
1843 {
1844 u32 clockhi, clocklo, clockhi1;
1845 u64 cycles;
1846 int i;
1847 struct mlx4_priv *priv = mlx4_priv(dev);
1848
1849 for (i = 0; i < 10; i++) {
1850 clockhi = swab32(readl(priv->clock_mapping));
1851 clocklo = swab32(readl(priv->clock_mapping + 4));
1852 clockhi1 = swab32(readl(priv->clock_mapping));
1853 if (clockhi == clockhi1)
1854 break;
1855 }
1856
1857 cycles = (u64) clockhi << 32 | (u64) clocklo;
1858
1859 return cycles;
1860 }
1861 EXPORT_SYMBOL_GPL(mlx4_read_clock);
1862
1863
1864 static int map_internal_clock(struct mlx4_dev *dev)
1865 {
1866 struct mlx4_priv *priv = mlx4_priv(dev);
1867
1868 priv->clock_mapping =
1869 ioremap(pci_resource_start(dev->persist->pdev,
1870 priv->fw.clock_bar) +
1871 priv->fw.clock_offset, MLX4_CLOCK_SIZE);
1872
1873 if (!priv->clock_mapping)
1874 return -ENOMEM;
1875
1876 return 0;
1877 }
1878
1879 int mlx4_get_internal_clock_params(struct mlx4_dev *dev,
1880 struct mlx4_clock_params *params)
1881 {
1882 struct mlx4_priv *priv = mlx4_priv(dev);
1883
1884 if (mlx4_is_slave(dev))
1885 return -EOPNOTSUPP;
1886
1887 if (!params)
1888 return -EINVAL;
1889
1890 params->bar = priv->fw.clock_bar;
1891 params->offset = priv->fw.clock_offset;
1892 params->size = MLX4_CLOCK_SIZE;
1893
1894 return 0;
1895 }
1896 EXPORT_SYMBOL_GPL(mlx4_get_internal_clock_params);
1897
1898 static void unmap_internal_clock(struct mlx4_dev *dev)
1899 {
1900 struct mlx4_priv *priv = mlx4_priv(dev);
1901
1902 if (priv->clock_mapping)
1903 iounmap(priv->clock_mapping);
1904 }
1905
1906 static void mlx4_close_hca(struct mlx4_dev *dev)
1907 {
1908 unmap_internal_clock(dev);
1909 unmap_bf_area(dev);
1910 if (mlx4_is_slave(dev))
1911 mlx4_slave_exit(dev);
1912 else {
1913 mlx4_CLOSE_HCA(dev, 0);
1914 mlx4_free_icms(dev);
1915 }
1916 }
1917
1918 static void mlx4_close_fw(struct mlx4_dev *dev)
1919 {
1920 if (!mlx4_is_slave(dev)) {
1921 mlx4_UNMAP_FA(dev);
1922 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1923 }
1924 }
1925
1926 static int mlx4_comm_check_offline(struct mlx4_dev *dev)
1927 {
1928 #define COMM_CHAN_OFFLINE_OFFSET 0x09
1929
1930 u32 comm_flags;
1931 u32 offline_bit;
1932 unsigned long end;
1933 struct mlx4_priv *priv = mlx4_priv(dev);
1934
1935 end = msecs_to_jiffies(MLX4_COMM_OFFLINE_TIME_OUT) + jiffies;
1936 while (time_before(jiffies, end)) {
1937 comm_flags = swab32(readl((__iomem char *)priv->mfunc.comm +
1938 MLX4_COMM_CHAN_FLAGS));
1939 offline_bit = (comm_flags &
1940 (u32)(1 << COMM_CHAN_OFFLINE_OFFSET));
1941 if (!offline_bit)
1942 return 0;
1943
1944 /* If device removal has been requested,
1945 * do not continue retrying.
1946 */
1947 if (dev->persist->interface_state &
1948 MLX4_INTERFACE_STATE_NOWAIT)
1949 break;
1950
1951 /* There are cases as part of AER/Reset flow that PF needs
1952 * around 100 msec to load. We therefore sleep for 100 msec
1953 * to allow other tasks to make use of that CPU during this
1954 * time interval.
1955 */
1956 msleep(100);
1957 }
1958 mlx4_err(dev, "Communication channel is offline.\n");
1959 return -EIO;
1960 }
1961
1962 static void mlx4_reset_vf_support(struct mlx4_dev *dev)
1963 {
1964 #define COMM_CHAN_RST_OFFSET 0x1e
1965
1966 struct mlx4_priv *priv = mlx4_priv(dev);
1967 u32 comm_rst;
1968 u32 comm_caps;
1969
1970 comm_caps = swab32(readl((__iomem char *)priv->mfunc.comm +
1971 MLX4_COMM_CHAN_CAPS));
1972 comm_rst = (comm_caps & (u32)(1 << COMM_CHAN_RST_OFFSET));
1973
1974 if (comm_rst)
1975 dev->caps.vf_caps |= MLX4_VF_CAP_FLAG_RESET;
1976 }
1977
1978 static int mlx4_init_slave(struct mlx4_dev *dev)
1979 {
1980 struct mlx4_priv *priv = mlx4_priv(dev);
1981 u64 dma = (u64) priv->mfunc.vhcr_dma;
1982 int ret_from_reset = 0;
1983 u32 slave_read;
1984 u32 cmd_channel_ver;
1985
1986 if (atomic_read(&pf_loading)) {
1987 mlx4_warn(dev, "PF is not ready - Deferring probe\n");
1988 return -EPROBE_DEFER;
1989 }
1990
1991 mutex_lock(&priv->cmd.slave_cmd_mutex);
1992 priv->cmd.max_cmds = 1;
1993 if (mlx4_comm_check_offline(dev)) {
1994 mlx4_err(dev, "PF is not responsive, skipping initialization\n");
1995 goto err_offline;
1996 }
1997
1998 mlx4_reset_vf_support(dev);
1999 mlx4_warn(dev, "Sending reset\n");
2000 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
2001 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME);
2002 /* if we are in the middle of flr the slave will try
2003 * NUM_OF_RESET_RETRIES times before leaving.*/
2004 if (ret_from_reset) {
2005 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
2006 mlx4_warn(dev, "slave is currently in the middle of FLR - Deferring probe\n");
2007 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2008 return -EPROBE_DEFER;
2009 } else
2010 goto err;
2011 }
2012
2013 /* check the driver version - the slave I/F revision
2014 * must match the master's */
2015 slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
2016 cmd_channel_ver = mlx4_comm_get_version();
2017
2018 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
2019 MLX4_COMM_GET_IF_REV(slave_read)) {
2020 mlx4_err(dev, "slave driver version is not supported by the master\n");
2021 goto err;
2022 }
2023
2024 mlx4_warn(dev, "Sending vhcr0\n");
2025 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
2026 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
2027 goto err;
2028 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
2029 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
2030 goto err;
2031 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
2032 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
2033 goto err;
2034 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma,
2035 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
2036 goto err;
2037
2038 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2039 return 0;
2040
2041 err:
2042 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP, 0);
2043 err_offline:
2044 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2045 return -EIO;
2046 }
2047
2048 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
2049 {
2050 int i;
2051
2052 for (i = 1; i <= dev->caps.num_ports; i++) {
2053 if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
2054 dev->caps.gid_table_len[i] =
2055 mlx4_get_slave_num_gids(dev, 0, i);
2056 else
2057 dev->caps.gid_table_len[i] = 1;
2058 dev->caps.pkey_table_len[i] =
2059 dev->phys_caps.pkey_phys_table_len[i] - 1;
2060 }
2061 }
2062
2063 static int choose_log_fs_mgm_entry_size(int qp_per_entry)
2064 {
2065 int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE;
2066
2067 for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE;
2068 i++) {
2069 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2))
2070 break;
2071 }
2072
2073 return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1;
2074 }
2075
2076 static const char *dmfs_high_rate_steering_mode_str(int dmfs_high_steer_mode)
2077 {
2078 switch (dmfs_high_steer_mode) {
2079 case MLX4_STEERING_DMFS_A0_DEFAULT:
2080 return "default performance";
2081
2082 case MLX4_STEERING_DMFS_A0_DYNAMIC:
2083 return "dynamic hybrid mode";
2084
2085 case MLX4_STEERING_DMFS_A0_STATIC:
2086 return "performance optimized for limited rule configuration (static)";
2087
2088 case MLX4_STEERING_DMFS_A0_DISABLE:
2089 return "disabled performance optimized steering";
2090
2091 case MLX4_STEERING_DMFS_A0_NOT_SUPPORTED:
2092 return "performance optimized steering not supported";
2093
2094 default:
2095 return "Unrecognized mode";
2096 }
2097 }
2098
2099 #define MLX4_DMFS_A0_STEERING (1UL << 2)
2100
2101 static void choose_steering_mode(struct mlx4_dev *dev,
2102 struct mlx4_dev_cap *dev_cap)
2103 {
2104 if (mlx4_log_num_mgm_entry_size <= 0) {
2105 if ((-mlx4_log_num_mgm_entry_size) & MLX4_DMFS_A0_STEERING) {
2106 if (dev->caps.dmfs_high_steer_mode ==
2107 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
2108 mlx4_err(dev, "DMFS high rate mode not supported\n");
2109 else
2110 dev->caps.dmfs_high_steer_mode =
2111 MLX4_STEERING_DMFS_A0_STATIC;
2112 }
2113 }
2114
2115 if (mlx4_log_num_mgm_entry_size <= 0 &&
2116 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN &&
2117 (!mlx4_is_mfunc(dev) ||
2118 (dev_cap->fs_max_num_qp_per_entry >=
2119 (dev->persist->num_vfs + 1))) &&
2120 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >=
2121 MLX4_MIN_MGM_LOG_ENTRY_SIZE) {
2122 dev->oper_log_mgm_entry_size =
2123 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry);
2124 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
2125 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
2126 dev->caps.fs_log_max_ucast_qp_range_size =
2127 dev_cap->fs_log_max_ucast_qp_range_size;
2128 } else {
2129 if (dev->caps.dmfs_high_steer_mode !=
2130 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
2131 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DISABLE;
2132 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER &&
2133 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
2134 dev->caps.steering_mode = MLX4_STEERING_MODE_B0;
2135 else {
2136 dev->caps.steering_mode = MLX4_STEERING_MODE_A0;
2137
2138 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER ||
2139 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
2140 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags set to use B0 steering - falling back to A0 steering mode\n");
2141 }
2142 dev->oper_log_mgm_entry_size =
2143 mlx4_log_num_mgm_entry_size > 0 ?
2144 mlx4_log_num_mgm_entry_size :
2145 MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
2146 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev);
2147 }
2148 mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, modparam log_num_mgm_entry_size = %d\n",
2149 mlx4_steering_mode_str(dev->caps.steering_mode),
2150 dev->oper_log_mgm_entry_size,
2151 mlx4_log_num_mgm_entry_size);
2152 }
2153
2154 static void choose_tunnel_offload_mode(struct mlx4_dev *dev,
2155 struct mlx4_dev_cap *dev_cap)
2156 {
2157 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2158 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
2159 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_VXLAN;
2160 else
2161 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_NONE;
2162
2163 mlx4_dbg(dev, "Tunneling offload mode is: %s\n", (dev->caps.tunnel_offload_mode
2164 == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) ? "vxlan" : "none");
2165 }
2166
2167 static int mlx4_validate_optimized_steering(struct mlx4_dev *dev)
2168 {
2169 int i;
2170 struct mlx4_port_cap port_cap;
2171
2172 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
2173 return -EINVAL;
2174
2175 for (i = 1; i <= dev->caps.num_ports; i++) {
2176 if (mlx4_dev_port(dev, i, &port_cap)) {
2177 mlx4_err(dev,
2178 "QUERY_DEV_CAP command failed, can't veify DMFS high rate steering.\n");
2179 } else if ((dev->caps.dmfs_high_steer_mode !=
2180 MLX4_STEERING_DMFS_A0_DEFAULT) &&
2181 (port_cap.dmfs_optimized_state ==
2182 !!(dev->caps.dmfs_high_steer_mode ==
2183 MLX4_STEERING_DMFS_A0_DISABLE))) {
2184 mlx4_err(dev,
2185 "DMFS high rate steer mode differ, driver requested %s but %s in FW.\n",
2186 dmfs_high_rate_steering_mode_str(
2187 dev->caps.dmfs_high_steer_mode),
2188 (port_cap.dmfs_optimized_state ?
2189 "enabled" : "disabled"));
2190 }
2191 }
2192
2193 return 0;
2194 }
2195
2196 static int mlx4_init_fw(struct mlx4_dev *dev)
2197 {
2198 struct mlx4_mod_stat_cfg mlx4_cfg;
2199 int err = 0;
2200
2201 if (!mlx4_is_slave(dev)) {
2202 err = mlx4_QUERY_FW(dev);
2203 if (err) {
2204 if (err == -EACCES)
2205 mlx4_info(dev, "non-primary physical function, skipping\n");
2206 else
2207 mlx4_err(dev, "QUERY_FW command failed, aborting\n");
2208 return err;
2209 }
2210
2211 err = mlx4_load_fw(dev);
2212 if (err) {
2213 mlx4_err(dev, "Failed to start FW, aborting\n");
2214 return err;
2215 }
2216
2217 mlx4_cfg.log_pg_sz_m = 1;
2218 mlx4_cfg.log_pg_sz = 0;
2219 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
2220 if (err)
2221 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
2222 }
2223
2224 return err;
2225 }
2226
2227 static int mlx4_init_hca(struct mlx4_dev *dev)
2228 {
2229 struct mlx4_priv *priv = mlx4_priv(dev);
2230 struct mlx4_adapter adapter;
2231 struct mlx4_dev_cap dev_cap;
2232 struct mlx4_profile profile;
2233 struct mlx4_init_hca_param init_hca;
2234 u64 icm_size;
2235 struct mlx4_config_dev_params params;
2236 int err;
2237
2238 if (!mlx4_is_slave(dev)) {
2239 err = mlx4_dev_cap(dev, &dev_cap);
2240 if (err) {
2241 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
2242 return err;
2243 }
2244
2245 choose_steering_mode(dev, &dev_cap);
2246 choose_tunnel_offload_mode(dev, &dev_cap);
2247
2248 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC &&
2249 mlx4_is_master(dev))
2250 dev->caps.function_caps |= MLX4_FUNC_CAP_DMFS_A0_STATIC;
2251
2252 err = mlx4_get_phys_port_id(dev);
2253 if (err)
2254 mlx4_err(dev, "Fail to get physical port id\n");
2255
2256 if (mlx4_is_master(dev))
2257 mlx4_parav_master_pf_caps(dev);
2258
2259 if (mlx4_low_memory_profile()) {
2260 mlx4_info(dev, "Running from within kdump kernel. Using low memory profile\n");
2261 profile = low_mem_profile;
2262 } else {
2263 profile = default_profile;
2264 }
2265 if (dev->caps.steering_mode ==
2266 MLX4_STEERING_MODE_DEVICE_MANAGED)
2267 profile.num_mcg = MLX4_FS_NUM_MCG;
2268
2269 icm_size = mlx4_make_profile(dev, &profile, &dev_cap,
2270 &init_hca);
2271 if ((long long) icm_size < 0) {
2272 err = icm_size;
2273 return err;
2274 }
2275
2276 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
2277
2278 if (enable_4k_uar) {
2279 init_hca.log_uar_sz = ilog2(dev->caps.num_uars) +
2280 PAGE_SHIFT - DEFAULT_UAR_PAGE_SHIFT;
2281 init_hca.uar_page_sz = DEFAULT_UAR_PAGE_SHIFT - 12;
2282 } else {
2283 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
2284 init_hca.uar_page_sz = PAGE_SHIFT - 12;
2285 }
2286
2287 init_hca.mw_enabled = 0;
2288 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2289 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
2290 init_hca.mw_enabled = INIT_HCA_TPT_MW_ENABLE;
2291
2292 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
2293 if (err)
2294 return err;
2295
2296 err = mlx4_INIT_HCA(dev, &init_hca);
2297 if (err) {
2298 mlx4_err(dev, "INIT_HCA command failed, aborting\n");
2299 goto err_free_icm;
2300 }
2301
2302 if (dev_cap.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) {
2303 err = mlx4_query_func(dev, &dev_cap);
2304 if (err < 0) {
2305 mlx4_err(dev, "QUERY_FUNC command failed, aborting.\n");
2306 goto err_close;
2307 } else if (err & MLX4_QUERY_FUNC_NUM_SYS_EQS) {
2308 dev->caps.num_eqs = dev_cap.max_eqs;
2309 dev->caps.reserved_eqs = dev_cap.reserved_eqs;
2310 dev->caps.reserved_uars = dev_cap.reserved_uars;
2311 }
2312 }
2313
2314 /*
2315 * If TS is supported by FW
2316 * read HCA frequency by QUERY_HCA command
2317 */
2318 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
2319 memset(&init_hca, 0, sizeof(init_hca));
2320 err = mlx4_QUERY_HCA(dev, &init_hca);
2321 if (err) {
2322 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp\n");
2323 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2324 } else {
2325 dev->caps.hca_core_clock =
2326 init_hca.hca_core_clock;
2327 }
2328
2329 /* In case we got HCA frequency 0 - disable timestamping
2330 * to avoid dividing by zero
2331 */
2332 if (!dev->caps.hca_core_clock) {
2333 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2334 mlx4_err(dev,
2335 "HCA frequency is 0 - timestamping is not supported\n");
2336 } else if (map_internal_clock(dev)) {
2337 /*
2338 * Map internal clock,
2339 * in case of failure disable timestamping
2340 */
2341 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2342 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported\n");
2343 }
2344 }
2345
2346 if (dev->caps.dmfs_high_steer_mode !=
2347 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) {
2348 if (mlx4_validate_optimized_steering(dev))
2349 mlx4_warn(dev, "Optimized steering validation failed\n");
2350
2351 if (dev->caps.dmfs_high_steer_mode ==
2352 MLX4_STEERING_DMFS_A0_DISABLE) {
2353 dev->caps.dmfs_high_rate_qpn_base =
2354 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
2355 dev->caps.dmfs_high_rate_qpn_range =
2356 MLX4_A0_STEERING_TABLE_SIZE;
2357 }
2358
2359 mlx4_info(dev, "DMFS high rate steer mode is: %s\n",
2360 dmfs_high_rate_steering_mode_str(
2361 dev->caps.dmfs_high_steer_mode));
2362 }
2363 } else {
2364 err = mlx4_init_slave(dev);
2365 if (err) {
2366 if (err != -EPROBE_DEFER)
2367 mlx4_err(dev, "Failed to initialize slave\n");
2368 return err;
2369 }
2370
2371 err = mlx4_slave_cap(dev);
2372 if (err) {
2373 mlx4_err(dev, "Failed to obtain slave caps\n");
2374 goto err_close;
2375 }
2376 }
2377
2378 if (map_bf_area(dev))
2379 mlx4_dbg(dev, "Failed to map blue flame area\n");
2380
2381 /*Only the master set the ports, all the rest got it from it.*/
2382 if (!mlx4_is_slave(dev))
2383 mlx4_set_port_mask(dev);
2384
2385 err = mlx4_QUERY_ADAPTER(dev, &adapter);
2386 if (err) {
2387 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting\n");
2388 goto unmap_bf;
2389 }
2390
2391 /* Query CONFIG_DEV parameters */
2392 err = mlx4_config_dev_retrieval(dev, &params);
2393 if (err && err != -EOPNOTSUPP) {
2394 mlx4_err(dev, "Failed to query CONFIG_DEV parameters\n");
2395 } else if (!err) {
2396 dev->caps.rx_checksum_flags_port[1] = params.rx_csum_flags_port_1;
2397 dev->caps.rx_checksum_flags_port[2] = params.rx_csum_flags_port_2;
2398 }
2399 priv->eq_table.inta_pin = adapter.inta_pin;
2400 memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
2401
2402 return 0;
2403
2404 unmap_bf:
2405 unmap_internal_clock(dev);
2406 unmap_bf_area(dev);
2407
2408 if (mlx4_is_slave(dev)) {
2409 kfree(dev->caps.qp0_qkey);
2410 kfree(dev->caps.qp0_tunnel);
2411 kfree(dev->caps.qp0_proxy);
2412 kfree(dev->caps.qp1_tunnel);
2413 kfree(dev->caps.qp1_proxy);
2414 }
2415
2416 err_close:
2417 if (mlx4_is_slave(dev))
2418 mlx4_slave_exit(dev);
2419 else
2420 mlx4_CLOSE_HCA(dev, 0);
2421
2422 err_free_icm:
2423 if (!mlx4_is_slave(dev))
2424 mlx4_free_icms(dev);
2425
2426 return err;
2427 }
2428
2429 static int mlx4_init_counters_table(struct mlx4_dev *dev)
2430 {
2431 struct mlx4_priv *priv = mlx4_priv(dev);
2432 int nent_pow2;
2433
2434 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2435 return -ENOENT;
2436
2437 if (!dev->caps.max_counters)
2438 return -ENOSPC;
2439
2440 nent_pow2 = roundup_pow_of_two(dev->caps.max_counters);
2441 /* reserve last counter index for sink counter */
2442 return mlx4_bitmap_init(&priv->counters_bitmap, nent_pow2,
2443 nent_pow2 - 1, 0,
2444 nent_pow2 - dev->caps.max_counters + 1);
2445 }
2446
2447 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
2448 {
2449 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2450 return;
2451
2452 if (!dev->caps.max_counters)
2453 return;
2454
2455 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
2456 }
2457
2458 static void mlx4_cleanup_default_counters(struct mlx4_dev *dev)
2459 {
2460 struct mlx4_priv *priv = mlx4_priv(dev);
2461 int port;
2462
2463 for (port = 0; port < dev->caps.num_ports; port++)
2464 if (priv->def_counter[port] != -1)
2465 mlx4_counter_free(dev, priv->def_counter[port]);
2466 }
2467
2468 static int mlx4_allocate_default_counters(struct mlx4_dev *dev)
2469 {
2470 struct mlx4_priv *priv = mlx4_priv(dev);
2471 int port, err = 0;
2472 u32 idx;
2473
2474 for (port = 0; port < dev->caps.num_ports; port++)
2475 priv->def_counter[port] = -1;
2476
2477 for (port = 0; port < dev->caps.num_ports; port++) {
2478 err = mlx4_counter_alloc(dev, &idx);
2479
2480 if (!err || err == -ENOSPC) {
2481 priv->def_counter[port] = idx;
2482 } else if (err == -ENOENT) {
2483 err = 0;
2484 continue;
2485 } else if (mlx4_is_slave(dev) && err == -EINVAL) {
2486 priv->def_counter[port] = MLX4_SINK_COUNTER_INDEX(dev);
2487 mlx4_warn(dev, "can't allocate counter from old PF driver, using index %d\n",
2488 MLX4_SINK_COUNTER_INDEX(dev));
2489 err = 0;
2490 } else {
2491 mlx4_err(dev, "%s: failed to allocate default counter port %d err %d\n",
2492 __func__, port + 1, err);
2493 mlx4_cleanup_default_counters(dev);
2494 return err;
2495 }
2496
2497 mlx4_dbg(dev, "%s: default counter index %d for port %d\n",
2498 __func__, priv->def_counter[port], port + 1);
2499 }
2500
2501 return err;
2502 }
2503
2504 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
2505 {
2506 struct mlx4_priv *priv = mlx4_priv(dev);
2507
2508 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2509 return -ENOENT;
2510
2511 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
2512 if (*idx == -1) {
2513 *idx = MLX4_SINK_COUNTER_INDEX(dev);
2514 return -ENOSPC;
2515 }
2516
2517 return 0;
2518 }
2519
2520 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
2521 {
2522 u64 out_param;
2523 int err;
2524
2525 if (mlx4_is_mfunc(dev)) {
2526 err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
2527 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
2528 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
2529 if (!err)
2530 *idx = get_param_l(&out_param);
2531
2532 return err;
2533 }
2534 return __mlx4_counter_alloc(dev, idx);
2535 }
2536 EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
2537
2538 static int __mlx4_clear_if_stat(struct mlx4_dev *dev,
2539 u8 counter_index)
2540 {
2541 struct mlx4_cmd_mailbox *if_stat_mailbox;
2542 int err;
2543 u32 if_stat_in_mod = (counter_index & 0xff) | MLX4_QUERY_IF_STAT_RESET;
2544
2545 if_stat_mailbox = mlx4_alloc_cmd_mailbox(dev);
2546 if (IS_ERR(if_stat_mailbox))
2547 return PTR_ERR(if_stat_mailbox);
2548
2549 err = mlx4_cmd_box(dev, 0, if_stat_mailbox->dma, if_stat_in_mod, 0,
2550 MLX4_CMD_QUERY_IF_STAT, MLX4_CMD_TIME_CLASS_C,
2551 MLX4_CMD_NATIVE);
2552
2553 mlx4_free_cmd_mailbox(dev, if_stat_mailbox);
2554 return err;
2555 }
2556
2557 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
2558 {
2559 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2560 return;
2561
2562 if (idx == MLX4_SINK_COUNTER_INDEX(dev))
2563 return;
2564
2565 __mlx4_clear_if_stat(dev, idx);
2566
2567 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR);
2568 return;
2569 }
2570
2571 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
2572 {
2573 u64 in_param = 0;
2574
2575 if (mlx4_is_mfunc(dev)) {
2576 set_param_l(&in_param, idx);
2577 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
2578 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
2579 MLX4_CMD_WRAPPED);
2580 return;
2581 }
2582 __mlx4_counter_free(dev, idx);
2583 }
2584 EXPORT_SYMBOL_GPL(mlx4_counter_free);
2585
2586 int mlx4_get_default_counter_index(struct mlx4_dev *dev, int port)
2587 {
2588 struct mlx4_priv *priv = mlx4_priv(dev);
2589
2590 return priv->def_counter[port - 1];
2591 }
2592 EXPORT_SYMBOL_GPL(mlx4_get_default_counter_index);
2593
2594 void mlx4_set_admin_guid(struct mlx4_dev *dev, __be64 guid, int entry, int port)
2595 {
2596 struct mlx4_priv *priv = mlx4_priv(dev);
2597
2598 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
2599 }
2600 EXPORT_SYMBOL_GPL(mlx4_set_admin_guid);
2601
2602 __be64 mlx4_get_admin_guid(struct mlx4_dev *dev, int entry, int port)
2603 {
2604 struct mlx4_priv *priv = mlx4_priv(dev);
2605
2606 return priv->mfunc.master.vf_admin[entry].vport[port].guid;
2607 }
2608 EXPORT_SYMBOL_GPL(mlx4_get_admin_guid);
2609
2610 void mlx4_set_random_admin_guid(struct mlx4_dev *dev, int entry, int port)
2611 {
2612 struct mlx4_priv *priv = mlx4_priv(dev);
2613 __be64 guid;
2614
2615 /* hw GUID */
2616 if (entry == 0)
2617 return;
2618
2619 get_random_bytes((char *)&guid, sizeof(guid));
2620 guid &= ~(cpu_to_be64(1ULL << 56));
2621 guid |= cpu_to_be64(1ULL << 57);
2622 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
2623 }
2624
2625 static int mlx4_setup_hca(struct mlx4_dev *dev)
2626 {
2627 struct mlx4_priv *priv = mlx4_priv(dev);
2628 int err;
2629 int port;
2630 __be32 ib_port_default_caps;
2631
2632 err = mlx4_init_uar_table(dev);
2633 if (err) {
2634 mlx4_err(dev, "Failed to initialize user access region table, aborting\n");
2635 return err;
2636 }
2637
2638 err = mlx4_uar_alloc(dev, &priv->driver_uar);
2639 if (err) {
2640 mlx4_err(dev, "Failed to allocate driver access region, aborting\n");
2641 goto err_uar_table_free;
2642 }
2643
2644 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
2645 if (!priv->kar) {
2646 mlx4_err(dev, "Couldn't map kernel access region, aborting\n");
2647 err = -ENOMEM;
2648 goto err_uar_free;
2649 }
2650
2651 err = mlx4_init_pd_table(dev);
2652 if (err) {
2653 mlx4_err(dev, "Failed to initialize protection domain table, aborting\n");
2654 goto err_kar_unmap;
2655 }
2656
2657 err = mlx4_init_xrcd_table(dev);
2658 if (err) {
2659 mlx4_err(dev, "Failed to initialize reliable connection domain table, aborting\n");
2660 goto err_pd_table_free;
2661 }
2662
2663 err = mlx4_init_mr_table(dev);
2664 if (err) {
2665 mlx4_err(dev, "Failed to initialize memory region table, aborting\n");
2666 goto err_xrcd_table_free;
2667 }
2668
2669 if (!mlx4_is_slave(dev)) {
2670 err = mlx4_init_mcg_table(dev);
2671 if (err) {
2672 mlx4_err(dev, "Failed to initialize multicast group table, aborting\n");
2673 goto err_mr_table_free;
2674 }
2675 err = mlx4_config_mad_demux(dev);
2676 if (err) {
2677 mlx4_err(dev, "Failed in config_mad_demux, aborting\n");
2678 goto err_mcg_table_free;
2679 }
2680 }
2681
2682 err = mlx4_init_eq_table(dev);
2683 if (err) {
2684 mlx4_err(dev, "Failed to initialize event queue table, aborting\n");
2685 goto err_mcg_table_free;
2686 }
2687
2688 err = mlx4_cmd_use_events(dev);
2689 if (err) {
2690 mlx4_err(dev, "Failed to switch to event-driven firmware commands, aborting\n");
2691 goto err_eq_table_free;
2692 }
2693
2694 err = mlx4_NOP(dev);
2695 if (err) {
2696 if (dev->flags & MLX4_FLAG_MSI_X) {
2697 mlx4_warn(dev, "NOP command failed to generate MSI-X interrupt IRQ %d)\n",
2698 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
2699 mlx4_warn(dev, "Trying again without MSI-X\n");
2700 } else {
2701 mlx4_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting\n",
2702 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
2703 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
2704 }
2705
2706 goto err_cmd_poll;
2707 }
2708
2709 mlx4_dbg(dev, "NOP command IRQ test passed\n");
2710
2711 err = mlx4_init_cq_table(dev);
2712 if (err) {
2713 mlx4_err(dev, "Failed to initialize completion queue table, aborting\n");
2714 goto err_cmd_poll;
2715 }
2716
2717 err = mlx4_init_srq_table(dev);
2718 if (err) {
2719 mlx4_err(dev, "Failed to initialize shared receive queue table, aborting\n");
2720 goto err_cq_table_free;
2721 }
2722
2723 err = mlx4_init_qp_table(dev);
2724 if (err) {
2725 mlx4_err(dev, "Failed to initialize queue pair table, aborting\n");
2726 goto err_srq_table_free;
2727 }
2728
2729 if (!mlx4_is_slave(dev)) {
2730 err = mlx4_init_counters_table(dev);
2731 if (err && err != -ENOENT) {
2732 mlx4_err(dev, "Failed to initialize counters table, aborting\n");
2733 goto err_qp_table_free;
2734 }
2735 }
2736
2737 err = mlx4_allocate_default_counters(dev);
2738 if (err) {
2739 mlx4_err(dev, "Failed to allocate default counters, aborting\n");
2740 goto err_counters_table_free;
2741 }
2742
2743 if (!mlx4_is_slave(dev)) {
2744 for (port = 1; port <= dev->caps.num_ports; port++) {
2745 ib_port_default_caps = 0;
2746 err = mlx4_get_port_ib_caps(dev, port,
2747 &ib_port_default_caps);
2748 if (err)
2749 mlx4_warn(dev, "failed to get port %d default ib capabilities (%d). Continuing with caps = 0\n",
2750 port, err);
2751 dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
2752
2753 /* initialize per-slave default ib port capabilities */
2754 if (mlx4_is_master(dev)) {
2755 int i;
2756 for (i = 0; i < dev->num_slaves; i++) {
2757 if (i == mlx4_master_func_num(dev))
2758 continue;
2759 priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
2760 ib_port_default_caps;
2761 }
2762 }
2763
2764 if (mlx4_is_mfunc(dev))
2765 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
2766 else
2767 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
2768
2769 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
2770 dev->caps.pkey_table_len[port] : -1);
2771 if (err) {
2772 mlx4_err(dev, "Failed to set port %d, aborting\n",
2773 port);
2774 goto err_default_countes_free;
2775 }
2776 }
2777 }
2778
2779 return 0;
2780
2781 err_default_countes_free:
2782 mlx4_cleanup_default_counters(dev);
2783
2784 err_counters_table_free:
2785 if (!mlx4_is_slave(dev))
2786 mlx4_cleanup_counters_table(dev);
2787
2788 err_qp_table_free:
2789 mlx4_cleanup_qp_table(dev);
2790
2791 err_srq_table_free:
2792 mlx4_cleanup_srq_table(dev);
2793
2794 err_cq_table_free:
2795 mlx4_cleanup_cq_table(dev);
2796
2797 err_cmd_poll:
2798 mlx4_cmd_use_polling(dev);
2799
2800 err_eq_table_free:
2801 mlx4_cleanup_eq_table(dev);
2802
2803 err_mcg_table_free:
2804 if (!mlx4_is_slave(dev))
2805 mlx4_cleanup_mcg_table(dev);
2806
2807 err_mr_table_free:
2808 mlx4_cleanup_mr_table(dev);
2809
2810 err_xrcd_table_free:
2811 mlx4_cleanup_xrcd_table(dev);
2812
2813 err_pd_table_free:
2814 mlx4_cleanup_pd_table(dev);
2815
2816 err_kar_unmap:
2817 iounmap(priv->kar);
2818
2819 err_uar_free:
2820 mlx4_uar_free(dev, &priv->driver_uar);
2821
2822 err_uar_table_free:
2823 mlx4_cleanup_uar_table(dev);
2824 return err;
2825 }
2826
2827 static int mlx4_init_affinity_hint(struct mlx4_dev *dev, int port, int eqn)
2828 {
2829 int requested_cpu = 0;
2830 struct mlx4_priv *priv = mlx4_priv(dev);
2831 struct mlx4_eq *eq;
2832 int off = 0;
2833 int i;
2834
2835 if (eqn > dev->caps.num_comp_vectors)
2836 return -EINVAL;
2837
2838 for (i = 1; i < port; i++)
2839 off += mlx4_get_eqs_per_port(dev, i);
2840
2841 requested_cpu = eqn - off - !!(eqn > MLX4_EQ_ASYNC);
2842
2843 /* Meaning EQs are shared, and this call comes from the second port */
2844 if (requested_cpu < 0)
2845 return 0;
2846
2847 eq = &priv->eq_table.eq[eqn];
2848
2849 if (!zalloc_cpumask_var(&eq->affinity_mask, GFP_KERNEL))
2850 return -ENOMEM;
2851
2852 cpumask_set_cpu(requested_cpu, eq->affinity_mask);
2853
2854 return 0;
2855 }
2856
2857 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
2858 {
2859 struct mlx4_priv *priv = mlx4_priv(dev);
2860 struct msix_entry *entries;
2861 int i;
2862 int port = 0;
2863
2864 if (msi_x) {
2865 int nreq = min3(dev->caps.num_ports *
2866 (int)num_online_cpus() + 1,
2867 dev->caps.num_eqs - dev->caps.reserved_eqs,
2868 MAX_MSIX);
2869
2870 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
2871 if (!entries)
2872 goto no_msi;
2873
2874 for (i = 0; i < nreq; ++i)
2875 entries[i].entry = i;
2876
2877 nreq = pci_enable_msix_range(dev->persist->pdev, entries, 2,
2878 nreq);
2879
2880 if (nreq < 0 || nreq < MLX4_EQ_ASYNC) {
2881 kfree(entries);
2882 goto no_msi;
2883 }
2884 /* 1 is reserved for events (asyncrounous EQ) */
2885 dev->caps.num_comp_vectors = nreq - 1;
2886
2887 priv->eq_table.eq[MLX4_EQ_ASYNC].irq = entries[0].vector;
2888 bitmap_zero(priv->eq_table.eq[MLX4_EQ_ASYNC].actv_ports.ports,
2889 dev->caps.num_ports);
2890
2891 for (i = 0; i < dev->caps.num_comp_vectors + 1; i++) {
2892 if (i == MLX4_EQ_ASYNC)
2893 continue;
2894
2895 priv->eq_table.eq[i].irq =
2896 entries[i + 1 - !!(i > MLX4_EQ_ASYNC)].vector;
2897
2898 if (MLX4_IS_LEGACY_EQ_MODE(dev->caps)) {
2899 bitmap_fill(priv->eq_table.eq[i].actv_ports.ports,
2900 dev->caps.num_ports);
2901 /* We don't set affinity hint when there
2902 * aren't enough EQs
2903 */
2904 } else {
2905 set_bit(port,
2906 priv->eq_table.eq[i].actv_ports.ports);
2907 if (mlx4_init_affinity_hint(dev, port + 1, i))
2908 mlx4_warn(dev, "Couldn't init hint cpumask for EQ %d\n",
2909 i);
2910 }
2911 /* We divide the Eqs evenly between the two ports.
2912 * (dev->caps.num_comp_vectors / dev->caps.num_ports)
2913 * refers to the number of Eqs per port
2914 * (i.e eqs_per_port). Theoretically, we would like to
2915 * write something like (i + 1) % eqs_per_port == 0.
2916 * However, since there's an asynchronous Eq, we have
2917 * to skip over it by comparing this condition to
2918 * !!((i + 1) > MLX4_EQ_ASYNC).
2919 */
2920 if ((dev->caps.num_comp_vectors > dev->caps.num_ports) &&
2921 ((i + 1) %
2922 (dev->caps.num_comp_vectors / dev->caps.num_ports)) ==
2923 !!((i + 1) > MLX4_EQ_ASYNC))
2924 /* If dev->caps.num_comp_vectors < dev->caps.num_ports,
2925 * everything is shared anyway.
2926 */
2927 port++;
2928 }
2929
2930 dev->flags |= MLX4_FLAG_MSI_X;
2931
2932 kfree(entries);
2933 return;
2934 }
2935
2936 no_msi:
2937 dev->caps.num_comp_vectors = 1;
2938
2939 BUG_ON(MLX4_EQ_ASYNC >= 2);
2940 for (i = 0; i < 2; ++i) {
2941 priv->eq_table.eq[i].irq = dev->persist->pdev->irq;
2942 if (i != MLX4_EQ_ASYNC) {
2943 bitmap_fill(priv->eq_table.eq[i].actv_ports.ports,
2944 dev->caps.num_ports);
2945 }
2946 }
2947 }
2948
2949 static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
2950 {
2951 struct devlink *devlink = priv_to_devlink(mlx4_priv(dev));
2952 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
2953 int err;
2954
2955 err = devlink_port_register(devlink, &info->devlink_port, port);
2956 if (err)
2957 return err;
2958
2959 info->dev = dev;
2960 info->port = port;
2961 if (!mlx4_is_slave(dev)) {
2962 mlx4_init_mac_table(dev, &info->mac_table);
2963 mlx4_init_vlan_table(dev, &info->vlan_table);
2964 mlx4_init_roce_gid_table(dev, &info->gid_table);
2965 info->base_qpn = mlx4_get_base_qpn(dev, port);
2966 }
2967
2968 sprintf(info->dev_name, "mlx4_port%d", port);
2969 info->port_attr.attr.name = info->dev_name;
2970 if (mlx4_is_mfunc(dev))
2971 info->port_attr.attr.mode = S_IRUGO;
2972 else {
2973 info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
2974 info->port_attr.store = set_port_type;
2975 }
2976 info->port_attr.show = show_port_type;
2977 sysfs_attr_init(&info->port_attr.attr);
2978
2979 err = device_create_file(&dev->persist->pdev->dev, &info->port_attr);
2980 if (err) {
2981 mlx4_err(dev, "Failed to create file for port %d\n", port);
2982 devlink_port_unregister(&info->devlink_port);
2983 info->port = -1;
2984 }
2985
2986 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
2987 info->port_mtu_attr.attr.name = info->dev_mtu_name;
2988 if (mlx4_is_mfunc(dev))
2989 info->port_mtu_attr.attr.mode = S_IRUGO;
2990 else {
2991 info->port_mtu_attr.attr.mode = S_IRUGO | S_IWUSR;
2992 info->port_mtu_attr.store = set_port_ib_mtu;
2993 }
2994 info->port_mtu_attr.show = show_port_ib_mtu;
2995 sysfs_attr_init(&info->port_mtu_attr.attr);
2996
2997 err = device_create_file(&dev->persist->pdev->dev,
2998 &info->port_mtu_attr);
2999 if (err) {
3000 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
3001 device_remove_file(&info->dev->persist->pdev->dev,
3002 &info->port_attr);
3003 devlink_port_unregister(&info->devlink_port);
3004 info->port = -1;
3005 }
3006
3007 return err;
3008 }
3009
3010 static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
3011 {
3012 if (info->port < 0)
3013 return;
3014
3015 device_remove_file(&info->dev->persist->pdev->dev, &info->port_attr);
3016 device_remove_file(&info->dev->persist->pdev->dev,
3017 &info->port_mtu_attr);
3018 devlink_port_unregister(&info->devlink_port);
3019
3020 #ifdef CONFIG_RFS_ACCEL
3021 free_irq_cpu_rmap(info->rmap);
3022 info->rmap = NULL;
3023 #endif
3024 }
3025
3026 static int mlx4_init_steering(struct mlx4_dev *dev)
3027 {
3028 struct mlx4_priv *priv = mlx4_priv(dev);
3029 int num_entries = dev->caps.num_ports;
3030 int i, j;
3031
3032 priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL);
3033 if (!priv->steer)
3034 return -ENOMEM;
3035
3036 for (i = 0; i < num_entries; i++)
3037 for (j = 0; j < MLX4_NUM_STEERS; j++) {
3038 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
3039 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
3040 }
3041 return 0;
3042 }
3043
3044 static void mlx4_clear_steering(struct mlx4_dev *dev)
3045 {
3046 struct mlx4_priv *priv = mlx4_priv(dev);
3047 struct mlx4_steer_index *entry, *tmp_entry;
3048 struct mlx4_promisc_qp *pqp, *tmp_pqp;
3049 int num_entries = dev->caps.num_ports;
3050 int i, j;
3051
3052 for (i = 0; i < num_entries; i++) {
3053 for (j = 0; j < MLX4_NUM_STEERS; j++) {
3054 list_for_each_entry_safe(pqp, tmp_pqp,
3055 &priv->steer[i].promisc_qps[j],
3056 list) {
3057 list_del(&pqp->list);
3058 kfree(pqp);
3059 }
3060 list_for_each_entry_safe(entry, tmp_entry,
3061 &priv->steer[i].steer_entries[j],
3062 list) {
3063 list_del(&entry->list);
3064 list_for_each_entry_safe(pqp, tmp_pqp,
3065 &entry->duplicates,
3066 list) {
3067 list_del(&pqp->list);
3068 kfree(pqp);
3069 }
3070 kfree(entry);
3071 }
3072 }
3073 }
3074 kfree(priv->steer);
3075 }
3076
3077 static int extended_func_num(struct pci_dev *pdev)
3078 {
3079 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
3080 }
3081
3082 #define MLX4_OWNER_BASE 0x8069c
3083 #define MLX4_OWNER_SIZE 4
3084
3085 static int mlx4_get_ownership(struct mlx4_dev *dev)
3086 {
3087 void __iomem *owner;
3088 u32 ret;
3089
3090 if (pci_channel_offline(dev->persist->pdev))
3091 return -EIO;
3092
3093 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +
3094 MLX4_OWNER_BASE,
3095 MLX4_OWNER_SIZE);
3096 if (!owner) {
3097 mlx4_err(dev, "Failed to obtain ownership bit\n");
3098 return -ENOMEM;
3099 }
3100
3101 ret = readl(owner);
3102 iounmap(owner);
3103 return (int) !!ret;
3104 }
3105
3106 static void mlx4_free_ownership(struct mlx4_dev *dev)
3107 {
3108 void __iomem *owner;
3109
3110 if (pci_channel_offline(dev->persist->pdev))
3111 return;
3112
3113 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +
3114 MLX4_OWNER_BASE,
3115 MLX4_OWNER_SIZE);
3116 if (!owner) {
3117 mlx4_err(dev, "Failed to obtain ownership bit\n");
3118 return;
3119 }
3120 writel(0, owner);
3121 msleep(1000);
3122 iounmap(owner);
3123 }
3124
3125 #define SRIOV_VALID_STATE(flags) (!!((flags) & MLX4_FLAG_SRIOV) ==\
3126 !!((flags) & MLX4_FLAG_MASTER))
3127
3128 static u64 mlx4_enable_sriov(struct mlx4_dev *dev, struct pci_dev *pdev,
3129 u8 total_vfs, int existing_vfs, int reset_flow)
3130 {
3131 u64 dev_flags = dev->flags;
3132 int err = 0;
3133 int fw_enabled_sriov_vfs = min(pci_sriov_get_totalvfs(pdev),
3134 MLX4_MAX_NUM_VF);
3135
3136 if (reset_flow) {
3137 dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs),
3138 GFP_KERNEL);
3139 if (!dev->dev_vfs)
3140 goto free_mem;
3141 return dev_flags;
3142 }
3143
3144 atomic_inc(&pf_loading);
3145 if (dev->flags & MLX4_FLAG_SRIOV) {
3146 if (existing_vfs != total_vfs) {
3147 mlx4_err(dev, "SR-IOV was already enabled, but with num_vfs (%d) different than requested (%d)\n",
3148 existing_vfs, total_vfs);
3149 total_vfs = existing_vfs;
3150 }
3151 }
3152
3153 dev->dev_vfs = kzalloc(total_vfs * sizeof(*dev->dev_vfs), GFP_KERNEL);
3154 if (NULL == dev->dev_vfs) {
3155 mlx4_err(dev, "Failed to allocate memory for VFs\n");
3156 goto disable_sriov;
3157 }
3158
3159 if (!(dev->flags & MLX4_FLAG_SRIOV)) {
3160 if (total_vfs > fw_enabled_sriov_vfs) {
3161 mlx4_err(dev, "requested vfs (%d) > available vfs (%d). Continuing without SR_IOV\n",
3162 total_vfs, fw_enabled_sriov_vfs);
3163 err = -ENOMEM;
3164 goto disable_sriov;
3165 }
3166 mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n", total_vfs);
3167 err = pci_enable_sriov(pdev, total_vfs);
3168 }
3169 if (err) {
3170 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d)\n",
3171 err);
3172 goto disable_sriov;
3173 } else {
3174 mlx4_warn(dev, "Running in master mode\n");
3175 dev_flags |= MLX4_FLAG_SRIOV |
3176 MLX4_FLAG_MASTER;
3177 dev_flags &= ~MLX4_FLAG_SLAVE;
3178 dev->persist->num_vfs = total_vfs;
3179 }
3180 return dev_flags;
3181
3182 disable_sriov:
3183 atomic_dec(&pf_loading);
3184 free_mem:
3185 dev->persist->num_vfs = 0;
3186 kfree(dev->dev_vfs);
3187 dev->dev_vfs = NULL;
3188 return dev_flags & ~MLX4_FLAG_MASTER;
3189 }
3190
3191 enum {
3192 MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64 = -1,
3193 };
3194
3195 static int mlx4_check_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
3196 int *nvfs)
3197 {
3198 int requested_vfs = nvfs[0] + nvfs[1] + nvfs[2];
3199 /* Checking for 64 VFs as a limitation of CX2 */
3200 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_80_VFS) &&
3201 requested_vfs >= 64) {
3202 mlx4_err(dev, "Requested %d VFs, but FW does not support more than 64\n",
3203 requested_vfs);
3204 return MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64;
3205 }
3206 return 0;
3207 }
3208
3209 static int mlx4_pci_enable_device(struct mlx4_dev *dev)
3210 {
3211 struct pci_dev *pdev = dev->persist->pdev;
3212 int err = 0;
3213
3214 mutex_lock(&dev->persist->pci_status_mutex);
3215 if (dev->persist->pci_status == MLX4_PCI_STATUS_DISABLED) {
3216 err = pci_enable_device(pdev);
3217 if (!err)
3218 dev->persist->pci_status = MLX4_PCI_STATUS_ENABLED;
3219 }
3220 mutex_unlock(&dev->persist->pci_status_mutex);
3221
3222 return err;
3223 }
3224
3225 static void mlx4_pci_disable_device(struct mlx4_dev *dev)
3226 {
3227 struct pci_dev *pdev = dev->persist->pdev;
3228
3229 mutex_lock(&dev->persist->pci_status_mutex);
3230 if (dev->persist->pci_status == MLX4_PCI_STATUS_ENABLED) {
3231 pci_disable_device(pdev);
3232 dev->persist->pci_status = MLX4_PCI_STATUS_DISABLED;
3233 }
3234 mutex_unlock(&dev->persist->pci_status_mutex);
3235 }
3236
3237 static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data,
3238 int total_vfs, int *nvfs, struct mlx4_priv *priv,
3239 int reset_flow)
3240 {
3241 struct mlx4_dev *dev;
3242 unsigned sum = 0;
3243 int err;
3244 int port;
3245 int i;
3246 struct mlx4_dev_cap *dev_cap = NULL;
3247 int existing_vfs = 0;
3248
3249 dev = &priv->dev;
3250
3251 INIT_LIST_HEAD(&priv->ctx_list);
3252 spin_lock_init(&priv->ctx_lock);
3253
3254 mutex_init(&priv->port_mutex);
3255 mutex_init(&priv->bond_mutex);
3256
3257 INIT_LIST_HEAD(&priv->pgdir_list);
3258 mutex_init(&priv->pgdir_mutex);
3259 spin_lock_init(&priv->cmd.context_lock);
3260
3261 INIT_LIST_HEAD(&priv->bf_list);
3262 mutex_init(&priv->bf_mutex);
3263
3264 dev->rev_id = pdev->revision;
3265 dev->numa_node = dev_to_node(&pdev->dev);
3266
3267 /* Detect if this device is a virtual function */
3268 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
3269 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
3270 dev->flags |= MLX4_FLAG_SLAVE;
3271 } else {
3272 /* We reset the device and enable SRIOV only for physical
3273 * devices. Try to claim ownership on the device;
3274 * if already taken, skip -- do not allow multiple PFs */
3275 err = mlx4_get_ownership(dev);
3276 if (err) {
3277 if (err < 0)
3278 return err;
3279 else {
3280 mlx4_warn(dev, "Multiple PFs not yet supported - Skipping PF\n");
3281 return -EINVAL;
3282 }
3283 }
3284
3285 atomic_set(&priv->opreq_count, 0);
3286 INIT_WORK(&priv->opreq_task, mlx4_opreq_action);
3287
3288 /*
3289 * Now reset the HCA before we touch the PCI capabilities or
3290 * attempt a firmware command, since a boot ROM may have left
3291 * the HCA in an undefined state.
3292 */
3293 err = mlx4_reset(dev);
3294 if (err) {
3295 mlx4_err(dev, "Failed to reset HCA, aborting\n");
3296 goto err_sriov;
3297 }
3298
3299 if (total_vfs) {
3300 dev->flags = MLX4_FLAG_MASTER;
3301 existing_vfs = pci_num_vf(pdev);
3302 if (existing_vfs)
3303 dev->flags |= MLX4_FLAG_SRIOV;
3304 dev->persist->num_vfs = total_vfs;
3305 }
3306 }
3307
3308 /* on load remove any previous indication of internal error,
3309 * device is up.
3310 */
3311 dev->persist->state = MLX4_DEVICE_STATE_UP;
3312
3313 slave_start:
3314 err = mlx4_cmd_init(dev);
3315 if (err) {
3316 mlx4_err(dev, "Failed to init command interface, aborting\n");
3317 goto err_sriov;
3318 }
3319
3320 /* In slave functions, the communication channel must be initialized
3321 * before posting commands. Also, init num_slaves before calling
3322 * mlx4_init_hca */
3323 if (mlx4_is_mfunc(dev)) {
3324 if (mlx4_is_master(dev)) {
3325 dev->num_slaves = MLX4_MAX_NUM_SLAVES;
3326
3327 } else {
3328 dev->num_slaves = 0;
3329 err = mlx4_multi_func_init(dev);
3330 if (err) {
3331 mlx4_err(dev, "Failed to init slave mfunc interface, aborting\n");
3332 goto err_cmd;
3333 }
3334 }
3335 }
3336
3337 err = mlx4_init_fw(dev);
3338 if (err) {
3339 mlx4_err(dev, "Failed to init fw, aborting.\n");
3340 goto err_mfunc;
3341 }
3342
3343 if (mlx4_is_master(dev)) {
3344 /* when we hit the goto slave_start below, dev_cap already initialized */
3345 if (!dev_cap) {
3346 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL);
3347
3348 if (!dev_cap) {
3349 err = -ENOMEM;
3350 goto err_fw;
3351 }
3352
3353 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
3354 if (err) {
3355 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
3356 goto err_fw;
3357 }
3358
3359 if (mlx4_check_dev_cap(dev, dev_cap, nvfs))
3360 goto err_fw;
3361
3362 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) {
3363 u64 dev_flags = mlx4_enable_sriov(dev, pdev,
3364 total_vfs,
3365 existing_vfs,
3366 reset_flow);
3367
3368 mlx4_close_fw(dev);
3369 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3370 dev->flags = dev_flags;
3371 if (!SRIOV_VALID_STATE(dev->flags)) {
3372 mlx4_err(dev, "Invalid SRIOV state\n");
3373 goto err_sriov;
3374 }
3375 err = mlx4_reset(dev);
3376 if (err) {
3377 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
3378 goto err_sriov;
3379 }
3380 goto slave_start;
3381 }
3382 } else {
3383 /* Legacy mode FW requires SRIOV to be enabled before
3384 * doing QUERY_DEV_CAP, since max_eq's value is different if
3385 * SRIOV is enabled.
3386 */
3387 memset(dev_cap, 0, sizeof(*dev_cap));
3388 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
3389 if (err) {
3390 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
3391 goto err_fw;
3392 }
3393
3394 if (mlx4_check_dev_cap(dev, dev_cap, nvfs))
3395 goto err_fw;
3396 }
3397 }
3398
3399 err = mlx4_init_hca(dev);
3400 if (err) {
3401 if (err == -EACCES) {
3402 /* Not primary Physical function
3403 * Running in slave mode */
3404 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3405 /* We're not a PF */
3406 if (dev->flags & MLX4_FLAG_SRIOV) {
3407 if (!existing_vfs)
3408 pci_disable_sriov(pdev);
3409 if (mlx4_is_master(dev) && !reset_flow)
3410 atomic_dec(&pf_loading);
3411 dev->flags &= ~MLX4_FLAG_SRIOV;
3412 }
3413 if (!mlx4_is_slave(dev))
3414 mlx4_free_ownership(dev);
3415 dev->flags |= MLX4_FLAG_SLAVE;
3416 dev->flags &= ~MLX4_FLAG_MASTER;
3417 goto slave_start;
3418 } else
3419 goto err_fw;
3420 }
3421
3422 if (mlx4_is_master(dev) && (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) {
3423 u64 dev_flags = mlx4_enable_sriov(dev, pdev, total_vfs,
3424 existing_vfs, reset_flow);
3425
3426 if ((dev->flags ^ dev_flags) & (MLX4_FLAG_MASTER | MLX4_FLAG_SLAVE)) {
3427 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_VHCR);
3428 dev->flags = dev_flags;
3429 err = mlx4_cmd_init(dev);
3430 if (err) {
3431 /* Only VHCR is cleaned up, so could still
3432 * send FW commands
3433 */
3434 mlx4_err(dev, "Failed to init VHCR command interface, aborting\n");
3435 goto err_close;
3436 }
3437 } else {
3438 dev->flags = dev_flags;
3439 }
3440
3441 if (!SRIOV_VALID_STATE(dev->flags)) {
3442 mlx4_err(dev, "Invalid SRIOV state\n");
3443 goto err_close;
3444 }
3445 }
3446
3447 /* check if the device is functioning at its maximum possible speed.
3448 * No return code for this call, just warn the user in case of PCI
3449 * express device capabilities are under-satisfied by the bus.
3450 */
3451 if (!mlx4_is_slave(dev))
3452 mlx4_check_pcie_caps(dev);
3453
3454 /* In master functions, the communication channel must be initialized
3455 * after obtaining its address from fw */
3456 if (mlx4_is_master(dev)) {
3457 if (dev->caps.num_ports < 2 &&
3458 num_vfs_argc > 1) {
3459 err = -EINVAL;
3460 mlx4_err(dev,
3461 "Error: Trying to configure VFs on port 2, but HCA has only %d physical ports\n",
3462 dev->caps.num_ports);
3463 goto err_close;
3464 }
3465 memcpy(dev->persist->nvfs, nvfs, sizeof(dev->persist->nvfs));
3466
3467 for (i = 0;
3468 i < sizeof(dev->persist->nvfs)/
3469 sizeof(dev->persist->nvfs[0]); i++) {
3470 unsigned j;
3471
3472 for (j = 0; j < dev->persist->nvfs[i]; ++sum, ++j) {
3473 dev->dev_vfs[sum].min_port = i < 2 ? i + 1 : 1;
3474 dev->dev_vfs[sum].n_ports = i < 2 ? 1 :
3475 dev->caps.num_ports;
3476 }
3477 }
3478
3479 /* In master functions, the communication channel
3480 * must be initialized after obtaining its address from fw
3481 */
3482 err = mlx4_multi_func_init(dev);
3483 if (err) {
3484 mlx4_err(dev, "Failed to init master mfunc interface, aborting.\n");
3485 goto err_close;
3486 }
3487 }
3488
3489 err = mlx4_alloc_eq_table(dev);
3490 if (err)
3491 goto err_master_mfunc;
3492
3493 bitmap_zero(priv->msix_ctl.pool_bm, MAX_MSIX);
3494 mutex_init(&priv->msix_ctl.pool_lock);
3495
3496 mlx4_enable_msi_x(dev);
3497 if ((mlx4_is_mfunc(dev)) &&
3498 !(dev->flags & MLX4_FLAG_MSI_X)) {
3499 err = -EOPNOTSUPP;
3500 mlx4_err(dev, "INTx is not supported in multi-function mode, aborting\n");
3501 goto err_free_eq;
3502 }
3503
3504 if (!mlx4_is_slave(dev)) {
3505 err = mlx4_init_steering(dev);
3506 if (err)
3507 goto err_disable_msix;
3508 }
3509
3510 mlx4_init_quotas(dev);
3511
3512 err = mlx4_setup_hca(dev);
3513 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
3514 !mlx4_is_mfunc(dev)) {
3515 dev->flags &= ~MLX4_FLAG_MSI_X;
3516 dev->caps.num_comp_vectors = 1;
3517 pci_disable_msix(pdev);
3518 err = mlx4_setup_hca(dev);
3519 }
3520
3521 if (err)
3522 goto err_steer;
3523
3524 /* When PF resources are ready arm its comm channel to enable
3525 * getting commands
3526 */
3527 if (mlx4_is_master(dev)) {
3528 err = mlx4_ARM_COMM_CHANNEL(dev);
3529 if (err) {
3530 mlx4_err(dev, " Failed to arm comm channel eq: %x\n",
3531 err);
3532 goto err_steer;
3533 }
3534 }
3535
3536 for (port = 1; port <= dev->caps.num_ports; port++) {
3537 err = mlx4_init_port_info(dev, port);
3538 if (err)
3539 goto err_port;
3540 }
3541
3542 priv->v2p.port1 = 1;
3543 priv->v2p.port2 = 2;
3544
3545 err = mlx4_register_device(dev);
3546 if (err)
3547 goto err_port;
3548
3549 mlx4_request_modules(dev);
3550
3551 mlx4_sense_init(dev);
3552 mlx4_start_sense(dev);
3553
3554 priv->removed = 0;
3555
3556 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow)
3557 atomic_dec(&pf_loading);
3558
3559 kfree(dev_cap);
3560 return 0;
3561
3562 err_port:
3563 for (--port; port >= 1; --port)
3564 mlx4_cleanup_port_info(&priv->port[port]);
3565
3566 mlx4_cleanup_default_counters(dev);
3567 if (!mlx4_is_slave(dev))
3568 mlx4_cleanup_counters_table(dev);
3569 mlx4_cleanup_qp_table(dev);
3570 mlx4_cleanup_srq_table(dev);
3571 mlx4_cleanup_cq_table(dev);
3572 mlx4_cmd_use_polling(dev);
3573 mlx4_cleanup_eq_table(dev);
3574 mlx4_cleanup_mcg_table(dev);
3575 mlx4_cleanup_mr_table(dev);
3576 mlx4_cleanup_xrcd_table(dev);
3577 mlx4_cleanup_pd_table(dev);
3578 mlx4_cleanup_uar_table(dev);
3579
3580 err_steer:
3581 if (!mlx4_is_slave(dev))
3582 mlx4_clear_steering(dev);
3583
3584 err_disable_msix:
3585 if (dev->flags & MLX4_FLAG_MSI_X)
3586 pci_disable_msix(pdev);
3587
3588 err_free_eq:
3589 mlx4_free_eq_table(dev);
3590
3591 err_master_mfunc:
3592 if (mlx4_is_master(dev)) {
3593 mlx4_free_resource_tracker(dev, RES_TR_FREE_STRUCTS_ONLY);
3594 mlx4_multi_func_cleanup(dev);
3595 }
3596
3597 if (mlx4_is_slave(dev)) {
3598 kfree(dev->caps.qp0_qkey);
3599 kfree(dev->caps.qp0_tunnel);
3600 kfree(dev->caps.qp0_proxy);
3601 kfree(dev->caps.qp1_tunnel);
3602 kfree(dev->caps.qp1_proxy);
3603 }
3604
3605 err_close:
3606 mlx4_close_hca(dev);
3607
3608 err_fw:
3609 mlx4_close_fw(dev);
3610
3611 err_mfunc:
3612 if (mlx4_is_slave(dev))
3613 mlx4_multi_func_cleanup(dev);
3614
3615 err_cmd:
3616 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3617
3618 err_sriov:
3619 if (dev->flags & MLX4_FLAG_SRIOV && !existing_vfs) {
3620 pci_disable_sriov(pdev);
3621 dev->flags &= ~MLX4_FLAG_SRIOV;
3622 }
3623
3624 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow)
3625 atomic_dec(&pf_loading);
3626
3627 kfree(priv->dev.dev_vfs);
3628
3629 if (!mlx4_is_slave(dev))
3630 mlx4_free_ownership(dev);
3631
3632 kfree(dev_cap);
3633 return err;
3634 }
3635
3636 static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data,
3637 struct mlx4_priv *priv)
3638 {
3639 int err;
3640 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3641 int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3642 const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = {
3643 {2, 0, 0}, {0, 1, 2}, {0, 1, 2} };
3644 unsigned total_vfs = 0;
3645 unsigned int i;
3646
3647 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
3648
3649 err = mlx4_pci_enable_device(&priv->dev);
3650 if (err) {
3651 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
3652 return err;
3653 }
3654
3655 /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS
3656 * per port, we must limit the number of VFs to 63 (since their are
3657 * 128 MACs)
3658 */
3659 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) && i < num_vfs_argc;
3660 total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) {
3661 nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i];
3662 if (nvfs[i] < 0) {
3663 dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n");
3664 err = -EINVAL;
3665 goto err_disable_pdev;
3666 }
3667 }
3668 for (i = 0; i < sizeof(prb_vf)/sizeof(prb_vf[0]) && i < probe_vfs_argc;
3669 i++) {
3670 prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i];
3671 if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) {
3672 dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n");
3673 err = -EINVAL;
3674 goto err_disable_pdev;
3675 }
3676 }
3677 if (total_vfs > MLX4_MAX_NUM_VF) {
3678 dev_err(&pdev->dev,
3679 "Requested more VF's (%d) than allowed by hw (%d)\n",
3680 total_vfs, MLX4_MAX_NUM_VF);
3681 err = -EINVAL;
3682 goto err_disable_pdev;
3683 }
3684
3685 for (i = 0; i < MLX4_MAX_PORTS; i++) {
3686 if (nvfs[i] + nvfs[2] > MLX4_MAX_NUM_VF_P_PORT) {
3687 dev_err(&pdev->dev,
3688 "Requested more VF's (%d) for port (%d) than allowed by driver (%d)\n",
3689 nvfs[i] + nvfs[2], i + 1,
3690 MLX4_MAX_NUM_VF_P_PORT);
3691 err = -EINVAL;
3692 goto err_disable_pdev;
3693 }
3694 }
3695
3696 /* Check for BARs. */
3697 if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) &&
3698 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
3699 dev_err(&pdev->dev, "Missing DCS, aborting (driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n",
3700 pci_dev_data, pci_resource_flags(pdev, 0));
3701 err = -ENODEV;
3702 goto err_disable_pdev;
3703 }
3704 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
3705 dev_err(&pdev->dev, "Missing UAR, aborting\n");
3706 err = -ENODEV;
3707 goto err_disable_pdev;
3708 }
3709
3710 err = pci_request_regions(pdev, DRV_NAME);
3711 if (err) {
3712 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
3713 goto err_disable_pdev;
3714 }
3715
3716 pci_set_master(pdev);
3717
3718 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
3719 if (err) {
3720 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
3721 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3722 if (err) {
3723 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
3724 goto err_release_regions;
3725 }
3726 }
3727 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
3728 if (err) {
3729 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
3730 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3731 if (err) {
3732 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, aborting\n");
3733 goto err_release_regions;
3734 }
3735 }
3736
3737 /* Allow large DMA segments, up to the firmware limit of 1 GB */
3738 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
3739 /* Detect if this device is a virtual function */
3740 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
3741 /* When acting as pf, we normally skip vfs unless explicitly
3742 * requested to probe them.
3743 */
3744 if (total_vfs) {
3745 unsigned vfs_offset = 0;
3746
3747 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) &&
3748 vfs_offset + nvfs[i] < extended_func_num(pdev);
3749 vfs_offset += nvfs[i], i++)
3750 ;
3751 if (i == sizeof(nvfs)/sizeof(nvfs[0])) {
3752 err = -ENODEV;
3753 goto err_release_regions;
3754 }
3755 if ((extended_func_num(pdev) - vfs_offset)
3756 > prb_vf[i]) {
3757 dev_warn(&pdev->dev, "Skipping virtual function:%d\n",
3758 extended_func_num(pdev));
3759 err = -ENODEV;
3760 goto err_release_regions;
3761 }
3762 }
3763 }
3764
3765 err = mlx4_catas_init(&priv->dev);
3766 if (err)
3767 goto err_release_regions;
3768
3769 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 0);
3770 if (err)
3771 goto err_catas;
3772
3773 return 0;
3774
3775 err_catas:
3776 mlx4_catas_end(&priv->dev);
3777
3778 err_release_regions:
3779 pci_release_regions(pdev);
3780
3781 err_disable_pdev:
3782 mlx4_pci_disable_device(&priv->dev);
3783 pci_set_drvdata(pdev, NULL);
3784 return err;
3785 }
3786
3787 static int mlx4_devlink_port_type_set(struct devlink_port *devlink_port,
3788 enum devlink_port_type port_type)
3789 {
3790 struct mlx4_port_info *info = container_of(devlink_port,
3791 struct mlx4_port_info,
3792 devlink_port);
3793 enum mlx4_port_type mlx4_port_type;
3794
3795 switch (port_type) {
3796 case DEVLINK_PORT_TYPE_AUTO:
3797 mlx4_port_type = MLX4_PORT_TYPE_AUTO;
3798 break;
3799 case DEVLINK_PORT_TYPE_ETH:
3800 mlx4_port_type = MLX4_PORT_TYPE_ETH;
3801 break;
3802 case DEVLINK_PORT_TYPE_IB:
3803 mlx4_port_type = MLX4_PORT_TYPE_IB;
3804 break;
3805 default:
3806 return -EOPNOTSUPP;
3807 }
3808
3809 return __set_port_type(info, mlx4_port_type);
3810 }
3811
3812 static const struct devlink_ops mlx4_devlink_ops = {
3813 .port_type_set = mlx4_devlink_port_type_set,
3814 };
3815
3816 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
3817 {
3818 struct devlink *devlink;
3819 struct mlx4_priv *priv;
3820 struct mlx4_dev *dev;
3821 int ret;
3822
3823 printk_once(KERN_INFO "%s", mlx4_version);
3824
3825 devlink = devlink_alloc(&mlx4_devlink_ops, sizeof(*priv));
3826 if (!devlink)
3827 return -ENOMEM;
3828 priv = devlink_priv(devlink);
3829
3830 dev = &priv->dev;
3831 dev->persist = kzalloc(sizeof(*dev->persist), GFP_KERNEL);
3832 if (!dev->persist) {
3833 ret = -ENOMEM;
3834 goto err_devlink_free;
3835 }
3836 dev->persist->pdev = pdev;
3837 dev->persist->dev = dev;
3838 pci_set_drvdata(pdev, dev->persist);
3839 priv->pci_dev_data = id->driver_data;
3840 mutex_init(&dev->persist->device_state_mutex);
3841 mutex_init(&dev->persist->interface_state_mutex);
3842 mutex_init(&dev->persist->pci_status_mutex);
3843
3844 ret = devlink_register(devlink, &pdev->dev);
3845 if (ret)
3846 goto err_persist_free;
3847
3848 ret = __mlx4_init_one(pdev, id->driver_data, priv);
3849 if (ret)
3850 goto err_devlink_unregister;
3851
3852 pci_save_state(pdev);
3853 return 0;
3854
3855 err_devlink_unregister:
3856 devlink_unregister(devlink);
3857 err_persist_free:
3858 kfree(dev->persist);
3859 err_devlink_free:
3860 devlink_free(devlink);
3861 return ret;
3862 }
3863
3864 static void mlx4_clean_dev(struct mlx4_dev *dev)
3865 {
3866 struct mlx4_dev_persistent *persist = dev->persist;
3867 struct mlx4_priv *priv = mlx4_priv(dev);
3868 unsigned long flags = (dev->flags & RESET_PERSIST_MASK_FLAGS);
3869
3870 memset(priv, 0, sizeof(*priv));
3871 priv->dev.persist = persist;
3872 priv->dev.flags = flags;
3873 }
3874
3875 static void mlx4_unload_one(struct pci_dev *pdev)
3876 {
3877 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3878 struct mlx4_dev *dev = persist->dev;
3879 struct mlx4_priv *priv = mlx4_priv(dev);
3880 int pci_dev_data;
3881 int p, i;
3882
3883 if (priv->removed)
3884 return;
3885
3886 /* saving current ports type for further use */
3887 for (i = 0; i < dev->caps.num_ports; i++) {
3888 dev->persist->curr_port_type[i] = dev->caps.port_type[i + 1];
3889 dev->persist->curr_port_poss_type[i] = dev->caps.
3890 possible_type[i + 1];
3891 }
3892
3893 pci_dev_data = priv->pci_dev_data;
3894
3895 mlx4_stop_sense(dev);
3896 mlx4_unregister_device(dev);
3897
3898 for (p = 1; p <= dev->caps.num_ports; p++) {
3899 mlx4_cleanup_port_info(&priv->port[p]);
3900 mlx4_CLOSE_PORT(dev, p);
3901 }
3902
3903 if (mlx4_is_master(dev))
3904 mlx4_free_resource_tracker(dev,
3905 RES_TR_FREE_SLAVES_ONLY);
3906
3907 mlx4_cleanup_default_counters(dev);
3908 if (!mlx4_is_slave(dev))
3909 mlx4_cleanup_counters_table(dev);
3910 mlx4_cleanup_qp_table(dev);
3911 mlx4_cleanup_srq_table(dev);
3912 mlx4_cleanup_cq_table(dev);
3913 mlx4_cmd_use_polling(dev);
3914 mlx4_cleanup_eq_table(dev);
3915 mlx4_cleanup_mcg_table(dev);
3916 mlx4_cleanup_mr_table(dev);
3917 mlx4_cleanup_xrcd_table(dev);
3918 mlx4_cleanup_pd_table(dev);
3919
3920 if (mlx4_is_master(dev))
3921 mlx4_free_resource_tracker(dev,
3922 RES_TR_FREE_STRUCTS_ONLY);
3923
3924 iounmap(priv->kar);
3925 mlx4_uar_free(dev, &priv->driver_uar);
3926 mlx4_cleanup_uar_table(dev);
3927 if (!mlx4_is_slave(dev))
3928 mlx4_clear_steering(dev);
3929 mlx4_free_eq_table(dev);
3930 if (mlx4_is_master(dev))
3931 mlx4_multi_func_cleanup(dev);
3932 mlx4_close_hca(dev);
3933 mlx4_close_fw(dev);
3934 if (mlx4_is_slave(dev))
3935 mlx4_multi_func_cleanup(dev);
3936 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3937
3938 if (dev->flags & MLX4_FLAG_MSI_X)
3939 pci_disable_msix(pdev);
3940
3941 if (!mlx4_is_slave(dev))
3942 mlx4_free_ownership(dev);
3943
3944 kfree(dev->caps.qp0_qkey);
3945 kfree(dev->caps.qp0_tunnel);
3946 kfree(dev->caps.qp0_proxy);
3947 kfree(dev->caps.qp1_tunnel);
3948 kfree(dev->caps.qp1_proxy);
3949 kfree(dev->dev_vfs);
3950
3951 mlx4_clean_dev(dev);
3952 priv->pci_dev_data = pci_dev_data;
3953 priv->removed = 1;
3954 }
3955
3956 static void mlx4_remove_one(struct pci_dev *pdev)
3957 {
3958 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3959 struct mlx4_dev *dev = persist->dev;
3960 struct mlx4_priv *priv = mlx4_priv(dev);
3961 struct devlink *devlink = priv_to_devlink(priv);
3962 int active_vfs = 0;
3963
3964 if (mlx4_is_slave(dev))
3965 persist->interface_state |= MLX4_INTERFACE_STATE_NOWAIT;
3966
3967 mutex_lock(&persist->interface_state_mutex);
3968 persist->interface_state |= MLX4_INTERFACE_STATE_DELETION;
3969 mutex_unlock(&persist->interface_state_mutex);
3970
3971 /* Disabling SR-IOV is not allowed while there are active vf's */
3972 if (mlx4_is_master(dev) && dev->flags & MLX4_FLAG_SRIOV) {
3973 active_vfs = mlx4_how_many_lives_vf(dev);
3974 if (active_vfs) {
3975 pr_warn("Removing PF when there are active VF's !!\n");
3976 pr_warn("Will not disable SR-IOV.\n");
3977 }
3978 }
3979
3980 /* device marked to be under deletion running now without the lock
3981 * letting other tasks to be terminated
3982 */
3983 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
3984 mlx4_unload_one(pdev);
3985 else
3986 mlx4_info(dev, "%s: interface is down\n", __func__);
3987 mlx4_catas_end(dev);
3988 if (dev->flags & MLX4_FLAG_SRIOV && !active_vfs) {
3989 mlx4_warn(dev, "Disabling SR-IOV\n");
3990 pci_disable_sriov(pdev);
3991 }
3992
3993 pci_release_regions(pdev);
3994 mlx4_pci_disable_device(dev);
3995 devlink_unregister(devlink);
3996 kfree(dev->persist);
3997 devlink_free(devlink);
3998 pci_set_drvdata(pdev, NULL);
3999 }
4000
4001 static int restore_current_port_types(struct mlx4_dev *dev,
4002 enum mlx4_port_type *types,
4003 enum mlx4_port_type *poss_types)
4004 {
4005 struct mlx4_priv *priv = mlx4_priv(dev);
4006 int err, i;
4007
4008 mlx4_stop_sense(dev);
4009
4010 mutex_lock(&priv->port_mutex);
4011 for (i = 0; i < dev->caps.num_ports; i++)
4012 dev->caps.possible_type[i + 1] = poss_types[i];
4013 err = mlx4_change_port_types(dev, types);
4014 mlx4_start_sense(dev);
4015 mutex_unlock(&priv->port_mutex);
4016
4017 return err;
4018 }
4019
4020 int mlx4_restart_one(struct pci_dev *pdev)
4021 {
4022 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4023 struct mlx4_dev *dev = persist->dev;
4024 struct mlx4_priv *priv = mlx4_priv(dev);
4025 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
4026 int pci_dev_data, err, total_vfs;
4027
4028 pci_dev_data = priv->pci_dev_data;
4029 total_vfs = dev->persist->num_vfs;
4030 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
4031
4032 mlx4_unload_one(pdev);
4033 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 1);
4034 if (err) {
4035 mlx4_err(dev, "%s: ERROR: mlx4_load_one failed, pci_name=%s, err=%d\n",
4036 __func__, pci_name(pdev), err);
4037 return err;
4038 }
4039
4040 err = restore_current_port_types(dev, dev->persist->curr_port_type,
4041 dev->persist->curr_port_poss_type);
4042 if (err)
4043 mlx4_err(dev, "could not restore original port types (%d)\n",
4044 err);
4045
4046 return err;
4047 }
4048
4049 #define MLX_SP(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_FORCE_SENSE_PORT }
4050 #define MLX_VF(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_IS_VF }
4051 #define MLX_GN(id) { PCI_VDEVICE(MELLANOX, id), 0 }
4052
4053 static const struct pci_device_id mlx4_pci_table[] = {
4054 /* MT25408 "Hermon" */
4055 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_SDR), /* SDR */
4056 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_DDR), /* DDR */
4057 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_QDR), /* QDR */
4058 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2), /* DDR Gen2 */
4059 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2), /* QDR Gen2 */
4060 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_EN), /* EN 10GigE */
4061 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2), /* EN 10GigE Gen2 */
4062 /* MT25458 ConnectX EN 10GBASE-T */
4063 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN),
4064 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2), /* Gen2 */
4065 /* MT26468 ConnectX EN 10GigE PCIe Gen2*/
4066 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2),
4067 /* MT26438 ConnectX EN 40GigE PCIe Gen2 5GT/s */
4068 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2),
4069 /* MT26478 ConnectX2 40GigE PCIe Gen2 */
4070 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX2),
4071 /* MT25400 Family [ConnectX-2] */
4072 MLX_VF(0x1002), /* Virtual Function */
4073 /* MT27500 Family [ConnectX-3] */
4074 MLX_GN(PCI_DEVICE_ID_MELLANOX_CONNECTX3),
4075 MLX_VF(0x1004), /* Virtual Function */
4076 MLX_GN(0x1005), /* MT27510 Family */
4077 MLX_GN(0x1006), /* MT27511 Family */
4078 MLX_GN(PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO), /* MT27520 Family */
4079 MLX_GN(0x1008), /* MT27521 Family */
4080 MLX_GN(0x1009), /* MT27530 Family */
4081 MLX_GN(0x100a), /* MT27531 Family */
4082 MLX_GN(0x100b), /* MT27540 Family */
4083 MLX_GN(0x100c), /* MT27541 Family */
4084 MLX_GN(0x100d), /* MT27550 Family */
4085 MLX_GN(0x100e), /* MT27551 Family */
4086 MLX_GN(0x100f), /* MT27560 Family */
4087 MLX_GN(0x1010), /* MT27561 Family */
4088
4089 /*
4090 * See the mellanox_check_broken_intx_masking() quirk when
4091 * adding devices
4092 */
4093
4094 { 0, }
4095 };
4096
4097 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
4098
4099 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
4100 pci_channel_state_t state)
4101 {
4102 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4103
4104 mlx4_err(persist->dev, "mlx4_pci_err_detected was called\n");
4105 mlx4_enter_error_state(persist);
4106
4107 mutex_lock(&persist->interface_state_mutex);
4108 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
4109 mlx4_unload_one(pdev);
4110
4111 mutex_unlock(&persist->interface_state_mutex);
4112 if (state == pci_channel_io_perm_failure)
4113 return PCI_ERS_RESULT_DISCONNECT;
4114
4115 mlx4_pci_disable_device(persist->dev);
4116 return PCI_ERS_RESULT_NEED_RESET;
4117 }
4118
4119 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
4120 {
4121 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4122 struct mlx4_dev *dev = persist->dev;
4123 int err;
4124
4125 mlx4_err(dev, "mlx4_pci_slot_reset was called\n");
4126 err = mlx4_pci_enable_device(dev);
4127 if (err) {
4128 mlx4_err(dev, "Can not re-enable device, err=%d\n", err);
4129 return PCI_ERS_RESULT_DISCONNECT;
4130 }
4131
4132 pci_set_master(pdev);
4133 pci_restore_state(pdev);
4134 pci_save_state(pdev);
4135 return PCI_ERS_RESULT_RECOVERED;
4136 }
4137
4138 static void mlx4_pci_resume(struct pci_dev *pdev)
4139 {
4140 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4141 struct mlx4_dev *dev = persist->dev;
4142 struct mlx4_priv *priv = mlx4_priv(dev);
4143 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
4144 int total_vfs;
4145 int err;
4146
4147 mlx4_err(dev, "%s was called\n", __func__);
4148 total_vfs = dev->persist->num_vfs;
4149 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
4150
4151 mutex_lock(&persist->interface_state_mutex);
4152 if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) {
4153 err = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, nvfs,
4154 priv, 1);
4155 if (err) {
4156 mlx4_err(dev, "%s: mlx4_load_one failed, err=%d\n",
4157 __func__, err);
4158 goto end;
4159 }
4160
4161 err = restore_current_port_types(dev, dev->persist->
4162 curr_port_type, dev->persist->
4163 curr_port_poss_type);
4164 if (err)
4165 mlx4_err(dev, "could not restore original port types (%d)\n", err);
4166 }
4167 end:
4168 mutex_unlock(&persist->interface_state_mutex);
4169
4170 }
4171
4172 static void mlx4_shutdown(struct pci_dev *pdev)
4173 {
4174 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4175
4176 mlx4_info(persist->dev, "mlx4_shutdown was called\n");
4177 mutex_lock(&persist->interface_state_mutex);
4178 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
4179 mlx4_unload_one(pdev);
4180 mutex_unlock(&persist->interface_state_mutex);
4181 }
4182
4183 static const struct pci_error_handlers mlx4_err_handler = {
4184 .error_detected = mlx4_pci_err_detected,
4185 .slot_reset = mlx4_pci_slot_reset,
4186 .resume = mlx4_pci_resume,
4187 };
4188
4189 static struct pci_driver mlx4_driver = {
4190 .name = DRV_NAME,
4191 .id_table = mlx4_pci_table,
4192 .probe = mlx4_init_one,
4193 .shutdown = mlx4_shutdown,
4194 .remove = mlx4_remove_one,
4195 .err_handler = &mlx4_err_handler,
4196 };
4197
4198 static int __init mlx4_verify_params(void)
4199 {
4200 if ((log_num_mac < 0) || (log_num_mac > 7)) {
4201 pr_warn("mlx4_core: bad num_mac: %d\n", log_num_mac);
4202 return -1;
4203 }
4204
4205 if (log_num_vlan != 0)
4206 pr_warn("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
4207 MLX4_LOG_NUM_VLANS);
4208
4209 if (use_prio != 0)
4210 pr_warn("mlx4_core: use_prio - obsolete module param, ignored\n");
4211
4212 if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
4213 pr_warn("mlx4_core: bad log_mtts_per_seg: %d\n",
4214 log_mtts_per_seg);
4215 return -1;
4216 }
4217
4218 /* Check if module param for ports type has legal combination */
4219 if (port_type_array[0] == false && port_type_array[1] == true) {
4220 pr_warn("Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
4221 port_type_array[0] = true;
4222 }
4223
4224 if (mlx4_log_num_mgm_entry_size < -7 ||
4225 (mlx4_log_num_mgm_entry_size > 0 &&
4226 (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE ||
4227 mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE))) {
4228 pr_warn("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not in legal range (-7..0 or %d..%d)\n",
4229 mlx4_log_num_mgm_entry_size,
4230 MLX4_MIN_MGM_LOG_ENTRY_SIZE,
4231 MLX4_MAX_MGM_LOG_ENTRY_SIZE);
4232 return -1;
4233 }
4234
4235 return 0;
4236 }
4237
4238 static int __init mlx4_init(void)
4239 {
4240 int ret;
4241
4242 if (mlx4_verify_params())
4243 return -EINVAL;
4244
4245
4246 mlx4_wq = create_singlethread_workqueue("mlx4");
4247 if (!mlx4_wq)
4248 return -ENOMEM;
4249
4250 ret = pci_register_driver(&mlx4_driver);
4251 if (ret < 0)
4252 destroy_workqueue(mlx4_wq);
4253 return ret < 0 ? ret : 0;
4254 }
4255
4256 static void __exit mlx4_cleanup(void)
4257 {
4258 pci_unregister_driver(&mlx4_driver);
4259 destroy_workqueue(mlx4_wq);
4260 }
4261
4262 module_init(mlx4_init);
4263 module_exit(mlx4_cleanup);
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