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/kernel.h>
38 #include <linux/init.h>
39 #include <linux/errno.h>
40 #include <linux/pci.h>
41 #include <linux/dma-mapping.h>
42 #include <linux/slab.h>
43 #include <linux/io-mapping.h>
44 #include <linux/delay.h>
45 #include <linux/kmod.h>
46 #include <linux/etherdevice.h>
47 #include <net/devlink.h>
48
49 #include <uapi/rdma/mlx4-abi.h>
50 #include <linux/mlx4/device.h>
51 #include <linux/mlx4/doorbell.h>
52
53 #include "mlx4.h"
54 #include "fw.h"
55 #include "icm.h"
56
57 MODULE_AUTHOR("Roland Dreier");
58 MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver");
59 MODULE_LICENSE("Dual BSD/GPL");
60 MODULE_VERSION(DRV_VERSION);
61
62 struct workqueue_struct *mlx4_wq;
63
64 #ifdef CONFIG_MLX4_DEBUG
65
66 int mlx4_debug_level; /* 0 by default */
67 module_param_named(debug_level, mlx4_debug_level, int, 0644);
68 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
69
70 #endif /* CONFIG_MLX4_DEBUG */
71
72 #ifdef CONFIG_PCI_MSI
73
74 static int msi_x = 1;
75 module_param(msi_x, int, 0444);
76 MODULE_PARM_DESC(msi_x, "0 - don't use MSI-X, 1 - use MSI-X, >1 - limit number of MSI-X irqs to msi_x");
77
78 #else /* CONFIG_PCI_MSI */
79
80 #define msi_x (0)
81
82 #endif /* CONFIG_PCI_MSI */
83
84 static uint8_t num_vfs[3] = {0, 0, 0};
85 static int num_vfs_argc;
86 module_param_array(num_vfs, byte, &num_vfs_argc, 0444);
87 MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0\n"
88 "num_vfs=port1,port2,port1+2");
89
90 static uint8_t probe_vf[3] = {0, 0, 0};
91 static int probe_vfs_argc;
92 module_param_array(probe_vf, byte, &probe_vfs_argc, 0444);
93 MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)\n"
94 "probe_vf=port1,port2,port1+2");
95
96 static int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
97 module_param_named(log_num_mgm_entry_size,
98 mlx4_log_num_mgm_entry_size, int, 0444);
99 MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num"
100 " of qp per mcg, for example:"
101 " 10 gives 248.range: 7 <="
102 " log_num_mgm_entry_size <= 12."
103 " To activate device managed"
104 " flow steering when available, set to -1");
105
106 static bool enable_64b_cqe_eqe = true;
107 module_param(enable_64b_cqe_eqe, bool, 0444);
108 MODULE_PARM_DESC(enable_64b_cqe_eqe,
109 "Enable 64 byte CQEs/EQEs when the FW supports this (default: True)");
110
111 static bool enable_4k_uar;
112 module_param(enable_4k_uar, bool, 0444);
113 MODULE_PARM_DESC(enable_4k_uar,
114 "Enable using 4K UAR. Should not be enabled if have VFs which do not support 4K UARs (default: false)");
115
116 #define PF_CONTEXT_BEHAVIOUR_MASK (MLX4_FUNC_CAP_64B_EQE_CQE | \
117 MLX4_FUNC_CAP_EQE_CQE_STRIDE | \
118 MLX4_FUNC_CAP_DMFS_A0_STATIC)
119
120 #define RESET_PERSIST_MASK_FLAGS (MLX4_FLAG_SRIOV)
121
122 static char mlx4_version[] =
123 DRV_NAME ": Mellanox ConnectX core driver v"
124 DRV_VERSION "\n";
125
126 static const struct mlx4_profile default_profile = {
127 .num_qp = 1 << 18,
128 .num_srq = 1 << 16,
129 .rdmarc_per_qp = 1 << 4,
130 .num_cq = 1 << 16,
131 .num_mcg = 1 << 13,
132 .num_mpt = 1 << 19,
133 .num_mtt = 1 << 20, /* It is really num mtt segements */
134 };
135
136 static const struct mlx4_profile low_mem_profile = {
137 .num_qp = 1 << 17,
138 .num_srq = 1 << 6,
139 .rdmarc_per_qp = 1 << 4,
140 .num_cq = 1 << 8,
141 .num_mcg = 1 << 8,
142 .num_mpt = 1 << 9,
143 .num_mtt = 1 << 7,
144 };
145
146 static int log_num_mac = 7;
147 module_param_named(log_num_mac, log_num_mac, int, 0444);
148 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
149
150 static int log_num_vlan;
151 module_param_named(log_num_vlan, log_num_vlan, int, 0444);
152 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
153 /* Log2 max number of VLANs per ETH port (0-7) */
154 #define MLX4_LOG_NUM_VLANS 7
155 #define MLX4_MIN_LOG_NUM_VLANS 0
156 #define MLX4_MIN_LOG_NUM_MAC 1
157
158 static bool use_prio;
159 module_param_named(use_prio, use_prio, bool, 0444);
160 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports (deprecated)");
161
162 int log_mtts_per_seg = ilog2(1);
163 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
164 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment "
165 "(0-7) (default: 0)");
166
167 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE};
168 static int arr_argc = 2;
169 module_param_array(port_type_array, int, &arr_argc, 0444);
170 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default "
171 "1 for IB, 2 for Ethernet");
172
173 struct mlx4_port_config {
174 struct list_head list;
175 enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
176 struct pci_dev *pdev;
177 };
178
179 static atomic_t pf_loading = ATOMIC_INIT(0);
180
mlx4_devlink_ierr_reset_get(struct devlink * devlink,u32 id,struct devlink_param_gset_ctx * ctx)181 static int mlx4_devlink_ierr_reset_get(struct devlink *devlink, u32 id,
182 struct devlink_param_gset_ctx *ctx)
183 {
184 ctx->val.vbool = !!mlx4_internal_err_reset;
185 return 0;
186 }
187
mlx4_devlink_ierr_reset_set(struct devlink * devlink,u32 id,struct devlink_param_gset_ctx * ctx)188 static int mlx4_devlink_ierr_reset_set(struct devlink *devlink, u32 id,
189 struct devlink_param_gset_ctx *ctx)
190 {
191 mlx4_internal_err_reset = ctx->val.vbool;
192 return 0;
193 }
194
mlx4_devlink_crdump_snapshot_get(struct devlink * devlink,u32 id,struct devlink_param_gset_ctx * ctx)195 static int mlx4_devlink_crdump_snapshot_get(struct devlink *devlink, u32 id,
196 struct devlink_param_gset_ctx *ctx)
197 {
198 struct mlx4_priv *priv = devlink_priv(devlink);
199 struct mlx4_dev *dev = &priv->dev;
200
201 ctx->val.vbool = dev->persist->crdump.snapshot_enable;
202 return 0;
203 }
204
mlx4_devlink_crdump_snapshot_set(struct devlink * devlink,u32 id,struct devlink_param_gset_ctx * ctx)205 static int mlx4_devlink_crdump_snapshot_set(struct devlink *devlink, u32 id,
206 struct devlink_param_gset_ctx *ctx)
207 {
208 struct mlx4_priv *priv = devlink_priv(devlink);
209 struct mlx4_dev *dev = &priv->dev;
210
211 dev->persist->crdump.snapshot_enable = ctx->val.vbool;
212 return 0;
213 }
214
215 static int
mlx4_devlink_max_macs_validate(struct devlink * devlink,u32 id,union devlink_param_value val,struct netlink_ext_ack * extack)216 mlx4_devlink_max_macs_validate(struct devlink *devlink, u32 id,
217 union devlink_param_value val,
218 struct netlink_ext_ack *extack)
219 {
220 u32 value = val.vu32;
221
222 if (value < 1 || value > 128)
223 return -ERANGE;
224
225 if (!is_power_of_2(value)) {
226 NL_SET_ERR_MSG_MOD(extack, "max_macs supported must be power of 2");
227 return -EINVAL;
228 }
229
230 return 0;
231 }
232
233 enum mlx4_devlink_param_id {
234 MLX4_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
235 MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE,
236 MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR,
237 };
238
239 static const struct devlink_param mlx4_devlink_params[] = {
240 DEVLINK_PARAM_GENERIC(INT_ERR_RESET,
241 BIT(DEVLINK_PARAM_CMODE_RUNTIME) |
242 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
243 mlx4_devlink_ierr_reset_get,
244 mlx4_devlink_ierr_reset_set, NULL),
245 DEVLINK_PARAM_GENERIC(MAX_MACS,
246 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
247 NULL, NULL, mlx4_devlink_max_macs_validate),
248 DEVLINK_PARAM_GENERIC(REGION_SNAPSHOT,
249 BIT(DEVLINK_PARAM_CMODE_RUNTIME) |
250 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
251 mlx4_devlink_crdump_snapshot_get,
252 mlx4_devlink_crdump_snapshot_set, NULL),
253 DEVLINK_PARAM_DRIVER(MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE,
254 "enable_64b_cqe_eqe", DEVLINK_PARAM_TYPE_BOOL,
255 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
256 NULL, NULL, NULL),
257 DEVLINK_PARAM_DRIVER(MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR,
258 "enable_4k_uar", DEVLINK_PARAM_TYPE_BOOL,
259 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT),
260 NULL, NULL, NULL),
261 };
262
mlx4_devlink_set_params_init_values(struct devlink * devlink)263 static void mlx4_devlink_set_params_init_values(struct devlink *devlink)
264 {
265 union devlink_param_value value;
266
267 value.vbool = !!mlx4_internal_err_reset;
268 devlink_param_driverinit_value_set(devlink,
269 DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
270 value);
271
272 value.vu32 = 1UL << log_num_mac;
273 devlink_param_driverinit_value_set(devlink,
274 DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
275 value);
276
277 value.vbool = enable_64b_cqe_eqe;
278 devlink_param_driverinit_value_set(devlink,
279 MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE,
280 value);
281
282 value.vbool = enable_4k_uar;
283 devlink_param_driverinit_value_set(devlink,
284 MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR,
285 value);
286
287 value.vbool = false;
288 devlink_param_driverinit_value_set(devlink,
289 DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
290 value);
291 }
292
mlx4_set_num_reserved_uars(struct mlx4_dev * dev,struct mlx4_dev_cap * dev_cap)293 static inline void mlx4_set_num_reserved_uars(struct mlx4_dev *dev,
294 struct mlx4_dev_cap *dev_cap)
295 {
296 /* The reserved_uars is calculated by system page size unit.
297 * Therefore, adjustment is added when the uar page size is less
298 * than the system page size
299 */
300 dev->caps.reserved_uars =
301 max_t(int,
302 mlx4_get_num_reserved_uar(dev),
303 dev_cap->reserved_uars /
304 (1 << (PAGE_SHIFT - dev->uar_page_shift)));
305 }
306
mlx4_check_port_params(struct mlx4_dev * dev,enum mlx4_port_type * port_type)307 int mlx4_check_port_params(struct mlx4_dev *dev,
308 enum mlx4_port_type *port_type)
309 {
310 int i;
311
312 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
313 for (i = 0; i < dev->caps.num_ports - 1; i++) {
314 if (port_type[i] != port_type[i + 1]) {
315 mlx4_err(dev, "Only same port types supported on this HCA, aborting\n");
316 return -EOPNOTSUPP;
317 }
318 }
319 }
320
321 for (i = 0; i < dev->caps.num_ports; i++) {
322 if (!(port_type[i] & dev->caps.supported_type[i+1])) {
323 mlx4_err(dev, "Requested port type for port %d is not supported on this HCA\n",
324 i + 1);
325 return -EOPNOTSUPP;
326 }
327 }
328 return 0;
329 }
330
mlx4_set_port_mask(struct mlx4_dev * dev)331 static void mlx4_set_port_mask(struct mlx4_dev *dev)
332 {
333 int i;
334
335 for (i = 1; i <= dev->caps.num_ports; ++i)
336 dev->caps.port_mask[i] = dev->caps.port_type[i];
337 }
338
339 enum {
340 MLX4_QUERY_FUNC_NUM_SYS_EQS = 1 << 0,
341 };
342
mlx4_query_func(struct mlx4_dev * dev,struct mlx4_dev_cap * dev_cap)343 static int mlx4_query_func(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
344 {
345 int err = 0;
346 struct mlx4_func func;
347
348 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) {
349 err = mlx4_QUERY_FUNC(dev, &func, 0);
350 if (err) {
351 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
352 return err;
353 }
354 dev_cap->max_eqs = func.max_eq;
355 dev_cap->reserved_eqs = func.rsvd_eqs;
356 dev_cap->reserved_uars = func.rsvd_uars;
357 err |= MLX4_QUERY_FUNC_NUM_SYS_EQS;
358 }
359 return err;
360 }
361
mlx4_enable_cqe_eqe_stride(struct mlx4_dev * dev)362 static void mlx4_enable_cqe_eqe_stride(struct mlx4_dev *dev)
363 {
364 struct mlx4_caps *dev_cap = &dev->caps;
365
366 /* FW not supporting or cancelled by user */
367 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_EQE_STRIDE) ||
368 !(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_CQE_STRIDE))
369 return;
370
371 /* Must have 64B CQE_EQE enabled by FW to use bigger stride
372 * When FW has NCSI it may decide not to report 64B CQE/EQEs
373 */
374 if (!(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_EQE) ||
375 !(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_CQE)) {
376 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
377 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
378 return;
379 }
380
381 if (cache_line_size() == 128 || cache_line_size() == 256) {
382 mlx4_dbg(dev, "Enabling CQE stride cacheLine supported\n");
383 /* Changing the real data inside CQE size to 32B */
384 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
385 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
386
387 if (mlx4_is_master(dev))
388 dev_cap->function_caps |= MLX4_FUNC_CAP_EQE_CQE_STRIDE;
389 } else {
390 if (cache_line_size() != 32 && cache_line_size() != 64)
391 mlx4_dbg(dev, "Disabling CQE stride, cacheLine size unsupported\n");
392 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
393 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
394 }
395 }
396
_mlx4_dev_port(struct mlx4_dev * dev,int port,struct mlx4_port_cap * port_cap)397 static int _mlx4_dev_port(struct mlx4_dev *dev, int port,
398 struct mlx4_port_cap *port_cap)
399 {
400 dev->caps.vl_cap[port] = port_cap->max_vl;
401 dev->caps.ib_mtu_cap[port] = port_cap->ib_mtu;
402 dev->phys_caps.gid_phys_table_len[port] = port_cap->max_gids;
403 dev->phys_caps.pkey_phys_table_len[port] = port_cap->max_pkeys;
404 /* set gid and pkey table operating lengths by default
405 * to non-sriov values
406 */
407 dev->caps.gid_table_len[port] = port_cap->max_gids;
408 dev->caps.pkey_table_len[port] = port_cap->max_pkeys;
409 dev->caps.port_width_cap[port] = port_cap->max_port_width;
410 dev->caps.eth_mtu_cap[port] = port_cap->eth_mtu;
411 dev->caps.max_tc_eth = port_cap->max_tc_eth;
412 dev->caps.def_mac[port] = port_cap->def_mac;
413 dev->caps.supported_type[port] = port_cap->supported_port_types;
414 dev->caps.suggested_type[port] = port_cap->suggested_type;
415 dev->caps.default_sense[port] = port_cap->default_sense;
416 dev->caps.trans_type[port] = port_cap->trans_type;
417 dev->caps.vendor_oui[port] = port_cap->vendor_oui;
418 dev->caps.wavelength[port] = port_cap->wavelength;
419 dev->caps.trans_code[port] = port_cap->trans_code;
420
421 return 0;
422 }
423
mlx4_dev_port(struct mlx4_dev * dev,int port,struct mlx4_port_cap * port_cap)424 static int mlx4_dev_port(struct mlx4_dev *dev, int port,
425 struct mlx4_port_cap *port_cap)
426 {
427 int err = 0;
428
429 err = mlx4_QUERY_PORT(dev, port, port_cap);
430
431 if (err)
432 mlx4_err(dev, "QUERY_PORT command failed.\n");
433
434 return err;
435 }
436
mlx4_enable_ignore_fcs(struct mlx4_dev * dev)437 static inline void mlx4_enable_ignore_fcs(struct mlx4_dev *dev)
438 {
439 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS))
440 return;
441
442 if (mlx4_is_mfunc(dev)) {
443 mlx4_dbg(dev, "SRIOV mode - Disabling Ignore FCS");
444 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
445 return;
446 }
447
448 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) {
449 mlx4_dbg(dev,
450 "Keep FCS is not supported - Disabling Ignore FCS");
451 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
452 return;
453 }
454 }
455
456 #define MLX4_A0_STEERING_TABLE_SIZE 256
mlx4_dev_cap(struct mlx4_dev * dev,struct mlx4_dev_cap * dev_cap)457 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
458 {
459 int err;
460 int i;
461
462 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
463 if (err) {
464 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
465 return err;
466 }
467 mlx4_dev_cap_dump(dev, dev_cap);
468
469 if (dev_cap->min_page_sz > PAGE_SIZE) {
470 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
471 dev_cap->min_page_sz, PAGE_SIZE);
472 return -ENODEV;
473 }
474 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
475 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
476 dev_cap->num_ports, MLX4_MAX_PORTS);
477 return -ENODEV;
478 }
479
480 if (dev_cap->uar_size > pci_resource_len(dev->persist->pdev, 2)) {
481 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
482 dev_cap->uar_size,
483 (unsigned long long)
484 pci_resource_len(dev->persist->pdev, 2));
485 return -ENODEV;
486 }
487
488 dev->caps.num_ports = dev_cap->num_ports;
489 dev->caps.num_sys_eqs = dev_cap->num_sys_eqs;
490 dev->phys_caps.num_phys_eqs = dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS ?
491 dev->caps.num_sys_eqs :
492 MLX4_MAX_EQ_NUM;
493 for (i = 1; i <= dev->caps.num_ports; ++i) {
494 err = _mlx4_dev_port(dev, i, dev_cap->port_cap + i);
495 if (err) {
496 mlx4_err(dev, "QUERY_PORT command failed, aborting\n");
497 return err;
498 }
499 }
500
501 dev->caps.uar_page_size = PAGE_SIZE;
502 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
503 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
504 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
505 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
506 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
507 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
508 dev->caps.max_wqes = dev_cap->max_qp_sz;
509 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
510 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
511 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
512 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
513 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
514 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
515 /*
516 * Subtract 1 from the limit because we need to allocate a
517 * spare CQE to enable resizing the CQ.
518 */
519 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
520 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
521 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
522 dev->caps.reserved_mtts = dev_cap->reserved_mtts;
523 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
524
525 dev->caps.reserved_pds = dev_cap->reserved_pds;
526 dev->caps.reserved_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
527 dev_cap->reserved_xrcds : 0;
528 dev->caps.max_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
529 dev_cap->max_xrcds : 0;
530 dev->caps.mtt_entry_sz = dev_cap->mtt_entry_sz;
531
532 dev->caps.max_msg_sz = dev_cap->max_msg_sz;
533 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
534 dev->caps.flags = dev_cap->flags;
535 dev->caps.flags2 = dev_cap->flags2;
536 dev->caps.bmme_flags = dev_cap->bmme_flags;
537 dev->caps.reserved_lkey = dev_cap->reserved_lkey;
538 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
539 dev->caps.max_gso_sz = dev_cap->max_gso_sz;
540 dev->caps.max_rss_tbl_sz = dev_cap->max_rss_tbl_sz;
541 dev->caps.wol_port[1] = dev_cap->wol_port[1];
542 dev->caps.wol_port[2] = dev_cap->wol_port[2];
543 dev->caps.health_buffer_addrs = dev_cap->health_buffer_addrs;
544
545 /* Save uar page shift */
546 if (!mlx4_is_slave(dev)) {
547 /* Virtual PCI function needs to determine UAR page size from
548 * firmware. Only master PCI function can set the uar page size
549 */
550 if (enable_4k_uar || !dev->persist->num_vfs)
551 dev->uar_page_shift = DEFAULT_UAR_PAGE_SHIFT;
552 else
553 dev->uar_page_shift = PAGE_SHIFT;
554
555 mlx4_set_num_reserved_uars(dev, dev_cap);
556 }
557
558 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN) {
559 struct mlx4_init_hca_param hca_param;
560
561 memset(&hca_param, 0, sizeof(hca_param));
562 err = mlx4_QUERY_HCA(dev, &hca_param);
563 /* Turn off PHV_EN flag in case phv_check_en is set.
564 * phv_check_en is a HW check that parse the packet and verify
565 * phv bit was reported correctly in the wqe. To allow QinQ
566 * PHV_EN flag should be set and phv_check_en must be cleared
567 * otherwise QinQ packets will be drop by the HW.
568 */
569 if (err || hca_param.phv_check_en)
570 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_PHV_EN;
571 }
572
573 /* Sense port always allowed on supported devices for ConnectX-1 and -2 */
574 if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT)
575 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
576 /* Don't do sense port on multifunction devices (for now at least) */
577 if (mlx4_is_mfunc(dev))
578 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
579
580 if (mlx4_low_memory_profile()) {
581 dev->caps.log_num_macs = MLX4_MIN_LOG_NUM_MAC;
582 dev->caps.log_num_vlans = MLX4_MIN_LOG_NUM_VLANS;
583 } else {
584 dev->caps.log_num_macs = log_num_mac;
585 dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
586 }
587
588 for (i = 1; i <= dev->caps.num_ports; ++i) {
589 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
590 if (dev->caps.supported_type[i]) {
591 /* if only ETH is supported - assign ETH */
592 if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH)
593 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
594 /* if only IB is supported, assign IB */
595 else if (dev->caps.supported_type[i] ==
596 MLX4_PORT_TYPE_IB)
597 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
598 else {
599 /* if IB and ETH are supported, we set the port
600 * type according to user selection of port type;
601 * if user selected none, take the FW hint */
602 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE)
603 dev->caps.port_type[i] = dev->caps.suggested_type[i] ?
604 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB;
605 else
606 dev->caps.port_type[i] = port_type_array[i - 1];
607 }
608 }
609 /*
610 * Link sensing is allowed on the port if 3 conditions are true:
611 * 1. Both protocols are supported on the port.
612 * 2. Different types are supported on the port
613 * 3. FW declared that it supports link sensing
614 */
615 mlx4_priv(dev)->sense.sense_allowed[i] =
616 ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) &&
617 (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
618 (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT));
619
620 /*
621 * If "default_sense" bit is set, we move the port to "AUTO" mode
622 * and perform sense_port FW command to try and set the correct
623 * port type from beginning
624 */
625 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) {
626 enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE;
627 dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO;
628 mlx4_SENSE_PORT(dev, i, &sensed_port);
629 if (sensed_port != MLX4_PORT_TYPE_NONE)
630 dev->caps.port_type[i] = sensed_port;
631 } else {
632 dev->caps.possible_type[i] = dev->caps.port_type[i];
633 }
634
635 if (dev->caps.log_num_macs > dev_cap->port_cap[i].log_max_macs) {
636 dev->caps.log_num_macs = dev_cap->port_cap[i].log_max_macs;
637 mlx4_warn(dev, "Requested number of MACs is too much for port %d, reducing to %d\n",
638 i, 1 << dev->caps.log_num_macs);
639 }
640 if (dev->caps.log_num_vlans > dev_cap->port_cap[i].log_max_vlans) {
641 dev->caps.log_num_vlans = dev_cap->port_cap[i].log_max_vlans;
642 mlx4_warn(dev, "Requested number of VLANs is too much for port %d, reducing to %d\n",
643 i, 1 << dev->caps.log_num_vlans);
644 }
645 }
646
647 if (mlx4_is_master(dev) && (dev->caps.num_ports == 2) &&
648 (port_type_array[0] == MLX4_PORT_TYPE_IB) &&
649 (port_type_array[1] == MLX4_PORT_TYPE_ETH)) {
650 mlx4_warn(dev,
651 "Granular QoS per VF not supported with IB/Eth configuration\n");
652 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_QOS_VPP;
653 }
654
655 dev->caps.max_counters = dev_cap->max_counters;
656
657 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
658 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
659 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
660 (1 << dev->caps.log_num_macs) *
661 (1 << dev->caps.log_num_vlans) *
662 dev->caps.num_ports;
663 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
664
665 if (dev_cap->dmfs_high_rate_qpn_base > 0 &&
666 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)
667 dev->caps.dmfs_high_rate_qpn_base = dev_cap->dmfs_high_rate_qpn_base;
668 else
669 dev->caps.dmfs_high_rate_qpn_base =
670 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
671
672 if (dev_cap->dmfs_high_rate_qpn_range > 0 &&
673 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN) {
674 dev->caps.dmfs_high_rate_qpn_range = dev_cap->dmfs_high_rate_qpn_range;
675 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DEFAULT;
676 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_FS_A0;
677 } else {
678 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_NOT_SUPPORTED;
679 dev->caps.dmfs_high_rate_qpn_base =
680 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
681 dev->caps.dmfs_high_rate_qpn_range = MLX4_A0_STEERING_TABLE_SIZE;
682 }
683
684 dev->caps.rl_caps = dev_cap->rl_caps;
685
686 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_RSS_RAW_ETH] =
687 dev->caps.dmfs_high_rate_qpn_range;
688
689 dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
690 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
691 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
692 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
693
694 dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
695
696 if (!enable_64b_cqe_eqe && !mlx4_is_slave(dev)) {
697 if (dev_cap->flags &
698 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) {
699 mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n");
700 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
701 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
702 }
703
704 if (dev_cap->flags2 &
705 (MLX4_DEV_CAP_FLAG2_CQE_STRIDE |
706 MLX4_DEV_CAP_FLAG2_EQE_STRIDE)) {
707 mlx4_warn(dev, "Disabling EQE/CQE stride per user request\n");
708 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
709 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
710 }
711 }
712
713 if ((dev->caps.flags &
714 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) &&
715 mlx4_is_master(dev))
716 dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE;
717
718 if (!mlx4_is_slave(dev)) {
719 mlx4_enable_cqe_eqe_stride(dev);
720 dev->caps.alloc_res_qp_mask =
721 (dev->caps.bf_reg_size ? MLX4_RESERVE_ETH_BF_QP : 0) |
722 MLX4_RESERVE_A0_QP;
723
724 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) &&
725 dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
726 mlx4_warn(dev, "Old device ETS support detected\n");
727 mlx4_warn(dev, "Consider upgrading device FW.\n");
728 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_ETS_CFG;
729 }
730
731 } else {
732 dev->caps.alloc_res_qp_mask = 0;
733 }
734
735 mlx4_enable_ignore_fcs(dev);
736
737 return 0;
738 }
739
740 /*The function checks if there are live vf, return the num of them*/
mlx4_how_many_lives_vf(struct mlx4_dev * dev)741 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
742 {
743 struct mlx4_priv *priv = mlx4_priv(dev);
744 struct mlx4_slave_state *s_state;
745 int i;
746 int ret = 0;
747
748 for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
749 s_state = &priv->mfunc.master.slave_state[i];
750 if (s_state->active && s_state->last_cmd !=
751 MLX4_COMM_CMD_RESET) {
752 mlx4_warn(dev, "%s: slave: %d is still active\n",
753 __func__, i);
754 ret++;
755 }
756 }
757 return ret;
758 }
759
mlx4_get_parav_qkey(struct mlx4_dev * dev,u32 qpn,u32 * qkey)760 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
761 {
762 u32 qk = MLX4_RESERVED_QKEY_BASE;
763
764 if (qpn >= dev->phys_caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
765 qpn < dev->phys_caps.base_proxy_sqpn)
766 return -EINVAL;
767
768 if (qpn >= dev->phys_caps.base_tunnel_sqpn)
769 /* tunnel qp */
770 qk += qpn - dev->phys_caps.base_tunnel_sqpn;
771 else
772 qk += qpn - dev->phys_caps.base_proxy_sqpn;
773 *qkey = qk;
774 return 0;
775 }
776 EXPORT_SYMBOL(mlx4_get_parav_qkey);
777
mlx4_sync_pkey_table(struct mlx4_dev * dev,int slave,int port,int i,int val)778 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val)
779 {
780 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
781
782 if (!mlx4_is_master(dev))
783 return;
784
785 priv->virt2phys_pkey[slave][port - 1][i] = val;
786 }
787 EXPORT_SYMBOL(mlx4_sync_pkey_table);
788
mlx4_put_slave_node_guid(struct mlx4_dev * dev,int slave,__be64 guid)789 void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid)
790 {
791 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
792
793 if (!mlx4_is_master(dev))
794 return;
795
796 priv->slave_node_guids[slave] = guid;
797 }
798 EXPORT_SYMBOL(mlx4_put_slave_node_guid);
799
mlx4_get_slave_node_guid(struct mlx4_dev * dev,int slave)800 __be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave)
801 {
802 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
803
804 if (!mlx4_is_master(dev))
805 return 0;
806
807 return priv->slave_node_guids[slave];
808 }
809 EXPORT_SYMBOL(mlx4_get_slave_node_guid);
810
mlx4_is_slave_active(struct mlx4_dev * dev,int slave)811 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
812 {
813 struct mlx4_priv *priv = mlx4_priv(dev);
814 struct mlx4_slave_state *s_slave;
815
816 if (!mlx4_is_master(dev))
817 return 0;
818
819 s_slave = &priv->mfunc.master.slave_state[slave];
820 return !!s_slave->active;
821 }
822 EXPORT_SYMBOL(mlx4_is_slave_active);
823
mlx4_handle_eth_header_mcast_prio(struct mlx4_net_trans_rule_hw_ctrl * ctrl,struct _rule_hw * eth_header)824 void mlx4_handle_eth_header_mcast_prio(struct mlx4_net_trans_rule_hw_ctrl *ctrl,
825 struct _rule_hw *eth_header)
826 {
827 if (is_multicast_ether_addr(eth_header->eth.dst_mac) ||
828 is_broadcast_ether_addr(eth_header->eth.dst_mac)) {
829 struct mlx4_net_trans_rule_hw_eth *eth =
830 (struct mlx4_net_trans_rule_hw_eth *)eth_header;
831 struct _rule_hw *next_rule = (struct _rule_hw *)(eth + 1);
832 bool last_rule = next_rule->size == 0 && next_rule->id == 0 &&
833 next_rule->rsvd == 0;
834
835 if (last_rule)
836 ctrl->prio = cpu_to_be16(MLX4_DOMAIN_NIC);
837 }
838 }
839 EXPORT_SYMBOL(mlx4_handle_eth_header_mcast_prio);
840
slave_adjust_steering_mode(struct mlx4_dev * dev,struct mlx4_dev_cap * dev_cap,struct mlx4_init_hca_param * hca_param)841 static void slave_adjust_steering_mode(struct mlx4_dev *dev,
842 struct mlx4_dev_cap *dev_cap,
843 struct mlx4_init_hca_param *hca_param)
844 {
845 dev->caps.steering_mode = hca_param->steering_mode;
846 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
847 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
848 dev->caps.fs_log_max_ucast_qp_range_size =
849 dev_cap->fs_log_max_ucast_qp_range_size;
850 } else
851 dev->caps.num_qp_per_mgm =
852 4 * ((1 << hca_param->log_mc_entry_sz)/16 - 2);
853
854 mlx4_dbg(dev, "Steering mode is: %s\n",
855 mlx4_steering_mode_str(dev->caps.steering_mode));
856 }
857
mlx4_slave_destroy_special_qp_cap(struct mlx4_dev * dev)858 static void mlx4_slave_destroy_special_qp_cap(struct mlx4_dev *dev)
859 {
860 kfree(dev->caps.spec_qps);
861 dev->caps.spec_qps = NULL;
862 }
863
mlx4_slave_special_qp_cap(struct mlx4_dev * dev)864 static int mlx4_slave_special_qp_cap(struct mlx4_dev *dev)
865 {
866 struct mlx4_func_cap *func_cap = NULL;
867 struct mlx4_caps *caps = &dev->caps;
868 int i, err = 0;
869
870 func_cap = kzalloc(sizeof(*func_cap), GFP_KERNEL);
871 caps->spec_qps = kcalloc(caps->num_ports, sizeof(*caps->spec_qps), GFP_KERNEL);
872
873 if (!func_cap || !caps->spec_qps) {
874 mlx4_err(dev, "Failed to allocate memory for special qps cap\n");
875 err = -ENOMEM;
876 goto err_mem;
877 }
878
879 for (i = 1; i <= caps->num_ports; ++i) {
880 err = mlx4_QUERY_FUNC_CAP(dev, i, func_cap);
881 if (err) {
882 mlx4_err(dev, "QUERY_FUNC_CAP port command failed for port %d, aborting (%d)\n",
883 i, err);
884 goto err_mem;
885 }
886 caps->spec_qps[i - 1] = func_cap->spec_qps;
887 caps->port_mask[i] = caps->port_type[i];
888 caps->phys_port_id[i] = func_cap->phys_port_id;
889 err = mlx4_get_slave_pkey_gid_tbl_len(dev, i,
890 &caps->gid_table_len[i],
891 &caps->pkey_table_len[i]);
892 if (err) {
893 mlx4_err(dev, "QUERY_PORT command failed for port %d, aborting (%d)\n",
894 i, err);
895 goto err_mem;
896 }
897 }
898
899 err_mem:
900 if (err)
901 mlx4_slave_destroy_special_qp_cap(dev);
902 kfree(func_cap);
903 return err;
904 }
905
mlx4_slave_cap(struct mlx4_dev * dev)906 static int mlx4_slave_cap(struct mlx4_dev *dev)
907 {
908 int err;
909 u32 page_size;
910 struct mlx4_dev_cap *dev_cap = NULL;
911 struct mlx4_func_cap *func_cap = NULL;
912 struct mlx4_init_hca_param *hca_param = NULL;
913
914 hca_param = kzalloc(sizeof(*hca_param), GFP_KERNEL);
915 func_cap = kzalloc(sizeof(*func_cap), GFP_KERNEL);
916 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL);
917 if (!hca_param || !func_cap || !dev_cap) {
918 mlx4_err(dev, "Failed to allocate memory for slave_cap\n");
919 err = -ENOMEM;
920 goto free_mem;
921 }
922
923 err = mlx4_QUERY_HCA(dev, hca_param);
924 if (err) {
925 mlx4_err(dev, "QUERY_HCA command failed, aborting\n");
926 goto free_mem;
927 }
928
929 /* fail if the hca has an unknown global capability
930 * at this time global_caps should be always zeroed
931 */
932 if (hca_param->global_caps) {
933 mlx4_err(dev, "Unknown hca global capabilities\n");
934 err = -EINVAL;
935 goto free_mem;
936 }
937
938 dev->caps.hca_core_clock = hca_param->hca_core_clock;
939
940 dev->caps.max_qp_dest_rdma = 1 << hca_param->log_rd_per_qp;
941 err = mlx4_dev_cap(dev, dev_cap);
942 if (err) {
943 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
944 goto free_mem;
945 }
946
947 err = mlx4_QUERY_FW(dev);
948 if (err)
949 mlx4_err(dev, "QUERY_FW command failed: could not get FW version\n");
950
951 page_size = ~dev->caps.page_size_cap + 1;
952 mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
953 if (page_size > PAGE_SIZE) {
954 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
955 page_size, PAGE_SIZE);
956 err = -ENODEV;
957 goto free_mem;
958 }
959
960 /* Set uar_page_shift for VF */
961 dev->uar_page_shift = hca_param->uar_page_sz + 12;
962
963 /* Make sure the master uar page size is valid */
964 if (dev->uar_page_shift > PAGE_SHIFT) {
965 mlx4_err(dev,
966 "Invalid configuration: uar page size is larger than system page size\n");
967 err = -ENODEV;
968 goto free_mem;
969 }
970
971 /* Set reserved_uars based on the uar_page_shift */
972 mlx4_set_num_reserved_uars(dev, dev_cap);
973
974 /* Although uar page size in FW differs from system page size,
975 * upper software layers (mlx4_ib, mlx4_en and part of mlx4_core)
976 * still works with assumption that uar page size == system page size
977 */
978 dev->caps.uar_page_size = PAGE_SIZE;
979
980 err = mlx4_QUERY_FUNC_CAP(dev, 0, func_cap);
981 if (err) {
982 mlx4_err(dev, "QUERY_FUNC_CAP general command failed, aborting (%d)\n",
983 err);
984 goto free_mem;
985 }
986
987 if ((func_cap->pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
988 PF_CONTEXT_BEHAVIOUR_MASK) {
989 mlx4_err(dev, "Unknown pf context behaviour %x known flags %x\n",
990 func_cap->pf_context_behaviour,
991 PF_CONTEXT_BEHAVIOUR_MASK);
992 err = -EINVAL;
993 goto free_mem;
994 }
995
996 dev->caps.num_ports = func_cap->num_ports;
997 dev->quotas.qp = func_cap->qp_quota;
998 dev->quotas.srq = func_cap->srq_quota;
999 dev->quotas.cq = func_cap->cq_quota;
1000 dev->quotas.mpt = func_cap->mpt_quota;
1001 dev->quotas.mtt = func_cap->mtt_quota;
1002 dev->caps.num_qps = 1 << hca_param->log_num_qps;
1003 dev->caps.num_srqs = 1 << hca_param->log_num_srqs;
1004 dev->caps.num_cqs = 1 << hca_param->log_num_cqs;
1005 dev->caps.num_mpts = 1 << hca_param->log_mpt_sz;
1006 dev->caps.num_eqs = func_cap->max_eq;
1007 dev->caps.reserved_eqs = func_cap->reserved_eq;
1008 dev->caps.reserved_lkey = func_cap->reserved_lkey;
1009 dev->caps.num_pds = MLX4_NUM_PDS;
1010 dev->caps.num_mgms = 0;
1011 dev->caps.num_amgms = 0;
1012
1013 if (dev->caps.num_ports > MLX4_MAX_PORTS) {
1014 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
1015 dev->caps.num_ports, MLX4_MAX_PORTS);
1016 err = -ENODEV;
1017 goto free_mem;
1018 }
1019
1020 mlx4_replace_zero_macs(dev);
1021
1022 err = mlx4_slave_special_qp_cap(dev);
1023 if (err) {
1024 mlx4_err(dev, "Set special QP caps failed. aborting\n");
1025 goto free_mem;
1026 }
1027
1028 if (dev->caps.uar_page_size * (dev->caps.num_uars -
1029 dev->caps.reserved_uars) >
1030 pci_resource_len(dev->persist->pdev,
1031 2)) {
1032 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
1033 dev->caps.uar_page_size * dev->caps.num_uars,
1034 (unsigned long long)
1035 pci_resource_len(dev->persist->pdev, 2));
1036 err = -ENOMEM;
1037 goto err_mem;
1038 }
1039
1040 if (hca_param->dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) {
1041 dev->caps.eqe_size = 64;
1042 dev->caps.eqe_factor = 1;
1043 } else {
1044 dev->caps.eqe_size = 32;
1045 dev->caps.eqe_factor = 0;
1046 }
1047
1048 if (hca_param->dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) {
1049 dev->caps.cqe_size = 64;
1050 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
1051 } else {
1052 dev->caps.cqe_size = 32;
1053 }
1054
1055 if (hca_param->dev_cap_enabled & MLX4_DEV_CAP_EQE_STRIDE_ENABLED) {
1056 dev->caps.eqe_size = hca_param->eqe_size;
1057 dev->caps.eqe_factor = 0;
1058 }
1059
1060 if (hca_param->dev_cap_enabled & MLX4_DEV_CAP_CQE_STRIDE_ENABLED) {
1061 dev->caps.cqe_size = hca_param->cqe_size;
1062 /* User still need to know when CQE > 32B */
1063 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
1064 }
1065
1066 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
1067 mlx4_warn(dev, "Timestamping is not supported in slave mode\n");
1068
1069 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_USER_MAC_EN;
1070 mlx4_dbg(dev, "User MAC FW update is not supported in slave mode\n");
1071
1072 slave_adjust_steering_mode(dev, dev_cap, hca_param);
1073 mlx4_dbg(dev, "RSS support for IP fragments is %s\n",
1074 hca_param->rss_ip_frags ? "on" : "off");
1075
1076 if (func_cap->extra_flags & MLX4_QUERY_FUNC_FLAGS_BF_RES_QP &&
1077 dev->caps.bf_reg_size)
1078 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_ETH_BF_QP;
1079
1080 if (func_cap->extra_flags & MLX4_QUERY_FUNC_FLAGS_A0_RES_QP)
1081 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_A0_QP;
1082
1083 err_mem:
1084 if (err)
1085 mlx4_slave_destroy_special_qp_cap(dev);
1086 free_mem:
1087 kfree(hca_param);
1088 kfree(func_cap);
1089 kfree(dev_cap);
1090 return err;
1091 }
1092
mlx4_request_modules(struct mlx4_dev * dev)1093 static void mlx4_request_modules(struct mlx4_dev *dev)
1094 {
1095 int port;
1096 int has_ib_port = false;
1097 int has_eth_port = false;
1098 #define EN_DRV_NAME "mlx4_en"
1099 #define IB_DRV_NAME "mlx4_ib"
1100
1101 for (port = 1; port <= dev->caps.num_ports; port++) {
1102 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
1103 has_ib_port = true;
1104 else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
1105 has_eth_port = true;
1106 }
1107
1108 if (has_eth_port)
1109 request_module_nowait(EN_DRV_NAME);
1110 if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
1111 request_module_nowait(IB_DRV_NAME);
1112 }
1113
1114 /*
1115 * Change the port configuration of the device.
1116 * Every user of this function must hold the port mutex.
1117 */
mlx4_change_port_types(struct mlx4_dev * dev,enum mlx4_port_type * port_types)1118 int mlx4_change_port_types(struct mlx4_dev *dev,
1119 enum mlx4_port_type *port_types)
1120 {
1121 int err = 0;
1122 int change = 0;
1123 int port;
1124
1125 for (port = 0; port < dev->caps.num_ports; port++) {
1126 /* Change the port type only if the new type is different
1127 * from the current, and not set to Auto */
1128 if (port_types[port] != dev->caps.port_type[port + 1])
1129 change = 1;
1130 }
1131 if (change) {
1132 mlx4_unregister_device(dev);
1133 for (port = 1; port <= dev->caps.num_ports; port++) {
1134 mlx4_CLOSE_PORT(dev, port);
1135 dev->caps.port_type[port] = port_types[port - 1];
1136 err = mlx4_SET_PORT(dev, port, -1);
1137 if (err) {
1138 mlx4_err(dev, "Failed to set port %d, aborting\n",
1139 port);
1140 goto out;
1141 }
1142 }
1143 mlx4_set_port_mask(dev);
1144 err = mlx4_register_device(dev);
1145 if (err) {
1146 mlx4_err(dev, "Failed to register device\n");
1147 goto out;
1148 }
1149 mlx4_request_modules(dev);
1150 }
1151
1152 out:
1153 return err;
1154 }
1155
show_port_type(struct device * dev,struct device_attribute * attr,char * buf)1156 static ssize_t show_port_type(struct device *dev,
1157 struct device_attribute *attr,
1158 char *buf)
1159 {
1160 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1161 port_attr);
1162 struct mlx4_dev *mdev = info->dev;
1163 char type[8];
1164
1165 sprintf(type, "%s",
1166 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
1167 "ib" : "eth");
1168 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
1169 sprintf(buf, "auto (%s)\n", type);
1170 else
1171 sprintf(buf, "%s\n", type);
1172
1173 return strlen(buf);
1174 }
1175
__set_port_type(struct mlx4_port_info * info,enum mlx4_port_type port_type)1176 static int __set_port_type(struct mlx4_port_info *info,
1177 enum mlx4_port_type port_type)
1178 {
1179 struct mlx4_dev *mdev = info->dev;
1180 struct mlx4_priv *priv = mlx4_priv(mdev);
1181 enum mlx4_port_type types[MLX4_MAX_PORTS];
1182 enum mlx4_port_type new_types[MLX4_MAX_PORTS];
1183 int i;
1184 int err = 0;
1185
1186 if ((port_type & mdev->caps.supported_type[info->port]) != port_type) {
1187 mlx4_err(mdev,
1188 "Requested port type for port %d is not supported on this HCA\n",
1189 info->port);
1190 return -EOPNOTSUPP;
1191 }
1192
1193 mlx4_stop_sense(mdev);
1194 mutex_lock(&priv->port_mutex);
1195 info->tmp_type = port_type;
1196
1197 /* Possible type is always the one that was delivered */
1198 mdev->caps.possible_type[info->port] = info->tmp_type;
1199
1200 for (i = 0; i < mdev->caps.num_ports; i++) {
1201 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
1202 mdev->caps.possible_type[i+1];
1203 if (types[i] == MLX4_PORT_TYPE_AUTO)
1204 types[i] = mdev->caps.port_type[i+1];
1205 }
1206
1207 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
1208 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
1209 for (i = 1; i <= mdev->caps.num_ports; i++) {
1210 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
1211 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
1212 err = -EOPNOTSUPP;
1213 }
1214 }
1215 }
1216 if (err) {
1217 mlx4_err(mdev, "Auto sensing is not supported on this HCA. Set only 'eth' or 'ib' for both ports (should be the same)\n");
1218 goto out;
1219 }
1220
1221 mlx4_do_sense_ports(mdev, new_types, types);
1222
1223 err = mlx4_check_port_params(mdev, new_types);
1224 if (err)
1225 goto out;
1226
1227 /* We are about to apply the changes after the configuration
1228 * was verified, no need to remember the temporary types
1229 * any more */
1230 for (i = 0; i < mdev->caps.num_ports; i++)
1231 priv->port[i + 1].tmp_type = 0;
1232
1233 err = mlx4_change_port_types(mdev, new_types);
1234
1235 out:
1236 mlx4_start_sense(mdev);
1237 mutex_unlock(&priv->port_mutex);
1238
1239 return err;
1240 }
1241
set_port_type(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1242 static ssize_t set_port_type(struct device *dev,
1243 struct device_attribute *attr,
1244 const char *buf, size_t count)
1245 {
1246 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1247 port_attr);
1248 struct mlx4_dev *mdev = info->dev;
1249 enum mlx4_port_type port_type;
1250 static DEFINE_MUTEX(set_port_type_mutex);
1251 int err;
1252
1253 mutex_lock(&set_port_type_mutex);
1254
1255 if (!strcmp(buf, "ib\n")) {
1256 port_type = MLX4_PORT_TYPE_IB;
1257 } else if (!strcmp(buf, "eth\n")) {
1258 port_type = MLX4_PORT_TYPE_ETH;
1259 } else if (!strcmp(buf, "auto\n")) {
1260 port_type = MLX4_PORT_TYPE_AUTO;
1261 } else {
1262 mlx4_err(mdev, "%s is not supported port type\n", buf);
1263 err = -EINVAL;
1264 goto err_out;
1265 }
1266
1267 err = __set_port_type(info, port_type);
1268
1269 err_out:
1270 mutex_unlock(&set_port_type_mutex);
1271
1272 return err ? err : count;
1273 }
1274
1275 enum ibta_mtu {
1276 IB_MTU_256 = 1,
1277 IB_MTU_512 = 2,
1278 IB_MTU_1024 = 3,
1279 IB_MTU_2048 = 4,
1280 IB_MTU_4096 = 5
1281 };
1282
int_to_ibta_mtu(int mtu)1283 static inline int int_to_ibta_mtu(int mtu)
1284 {
1285 switch (mtu) {
1286 case 256: return IB_MTU_256;
1287 case 512: return IB_MTU_512;
1288 case 1024: return IB_MTU_1024;
1289 case 2048: return IB_MTU_2048;
1290 case 4096: return IB_MTU_4096;
1291 default: return -1;
1292 }
1293 }
1294
ibta_mtu_to_int(enum ibta_mtu mtu)1295 static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
1296 {
1297 switch (mtu) {
1298 case IB_MTU_256: return 256;
1299 case IB_MTU_512: return 512;
1300 case IB_MTU_1024: return 1024;
1301 case IB_MTU_2048: return 2048;
1302 case IB_MTU_4096: return 4096;
1303 default: return -1;
1304 }
1305 }
1306
show_port_ib_mtu(struct device * dev,struct device_attribute * attr,char * buf)1307 static ssize_t show_port_ib_mtu(struct device *dev,
1308 struct device_attribute *attr,
1309 char *buf)
1310 {
1311 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1312 port_mtu_attr);
1313 struct mlx4_dev *mdev = info->dev;
1314
1315 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
1316 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
1317
1318 sprintf(buf, "%d\n",
1319 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
1320 return strlen(buf);
1321 }
1322
set_port_ib_mtu(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1323 static ssize_t set_port_ib_mtu(struct device *dev,
1324 struct device_attribute *attr,
1325 const char *buf, size_t count)
1326 {
1327 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1328 port_mtu_attr);
1329 struct mlx4_dev *mdev = info->dev;
1330 struct mlx4_priv *priv = mlx4_priv(mdev);
1331 int err, port, mtu, ibta_mtu = -1;
1332
1333 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
1334 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
1335 return -EINVAL;
1336 }
1337
1338 err = kstrtoint(buf, 0, &mtu);
1339 if (!err)
1340 ibta_mtu = int_to_ibta_mtu(mtu);
1341
1342 if (err || ibta_mtu < 0) {
1343 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
1344 return -EINVAL;
1345 }
1346
1347 mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
1348
1349 mlx4_stop_sense(mdev);
1350 mutex_lock(&priv->port_mutex);
1351 mlx4_unregister_device(mdev);
1352 for (port = 1; port <= mdev->caps.num_ports; port++) {
1353 mlx4_CLOSE_PORT(mdev, port);
1354 err = mlx4_SET_PORT(mdev, port, -1);
1355 if (err) {
1356 mlx4_err(mdev, "Failed to set port %d, aborting\n",
1357 port);
1358 goto err_set_port;
1359 }
1360 }
1361 err = mlx4_register_device(mdev);
1362 err_set_port:
1363 mutex_unlock(&priv->port_mutex);
1364 mlx4_start_sense(mdev);
1365 return err ? err : count;
1366 }
1367
1368 /* bond for multi-function device */
1369 #define MAX_MF_BOND_ALLOWED_SLAVES 63
mlx4_mf_bond(struct mlx4_dev * dev)1370 static int mlx4_mf_bond(struct mlx4_dev *dev)
1371 {
1372 int err = 0;
1373 int nvfs;
1374 struct mlx4_slaves_pport slaves_port1;
1375 struct mlx4_slaves_pport slaves_port2;
1376 DECLARE_BITMAP(slaves_port_1_2, MLX4_MFUNC_MAX);
1377
1378 slaves_port1 = mlx4_phys_to_slaves_pport(dev, 1);
1379 slaves_port2 = mlx4_phys_to_slaves_pport(dev, 2);
1380 bitmap_and(slaves_port_1_2,
1381 slaves_port1.slaves, slaves_port2.slaves,
1382 dev->persist->num_vfs + 1);
1383
1384 /* only single port vfs are allowed */
1385 if (bitmap_weight(slaves_port_1_2, dev->persist->num_vfs + 1) > 1) {
1386 mlx4_warn(dev, "HA mode unsupported for dual ported VFs\n");
1387 return -EINVAL;
1388 }
1389
1390 /* number of virtual functions is number of total functions minus one
1391 * physical function for each port.
1392 */
1393 nvfs = bitmap_weight(slaves_port1.slaves, dev->persist->num_vfs + 1) +
1394 bitmap_weight(slaves_port2.slaves, dev->persist->num_vfs + 1) - 2;
1395
1396 /* limit on maximum allowed VFs */
1397 if (nvfs > MAX_MF_BOND_ALLOWED_SLAVES) {
1398 mlx4_warn(dev, "HA mode is not supported for %d VFs (max %d are allowed)\n",
1399 nvfs, MAX_MF_BOND_ALLOWED_SLAVES);
1400 return -EINVAL;
1401 }
1402
1403 if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED) {
1404 mlx4_warn(dev, "HA mode unsupported for NON DMFS steering\n");
1405 return -EINVAL;
1406 }
1407
1408 err = mlx4_bond_mac_table(dev);
1409 if (err)
1410 return err;
1411 err = mlx4_bond_vlan_table(dev);
1412 if (err)
1413 goto err1;
1414 err = mlx4_bond_fs_rules(dev);
1415 if (err)
1416 goto err2;
1417
1418 return 0;
1419 err2:
1420 (void)mlx4_unbond_vlan_table(dev);
1421 err1:
1422 (void)mlx4_unbond_mac_table(dev);
1423 return err;
1424 }
1425
mlx4_mf_unbond(struct mlx4_dev * dev)1426 static int mlx4_mf_unbond(struct mlx4_dev *dev)
1427 {
1428 int ret, ret1;
1429
1430 ret = mlx4_unbond_fs_rules(dev);
1431 if (ret)
1432 mlx4_warn(dev, "multifunction unbond for flow rules failed (%d)\n", ret);
1433 ret1 = mlx4_unbond_mac_table(dev);
1434 if (ret1) {
1435 mlx4_warn(dev, "multifunction unbond for MAC table failed (%d)\n", ret1);
1436 ret = ret1;
1437 }
1438 ret1 = mlx4_unbond_vlan_table(dev);
1439 if (ret1) {
1440 mlx4_warn(dev, "multifunction unbond for VLAN table failed (%d)\n", ret1);
1441 ret = ret1;
1442 }
1443 return ret;
1444 }
1445
mlx4_bond(struct mlx4_dev * dev)1446 int mlx4_bond(struct mlx4_dev *dev)
1447 {
1448 int ret = 0;
1449 struct mlx4_priv *priv = mlx4_priv(dev);
1450
1451 mutex_lock(&priv->bond_mutex);
1452
1453 if (!mlx4_is_bonded(dev)) {
1454 ret = mlx4_do_bond(dev, true);
1455 if (ret)
1456 mlx4_err(dev, "Failed to bond device: %d\n", ret);
1457 if (!ret && mlx4_is_master(dev)) {
1458 ret = mlx4_mf_bond(dev);
1459 if (ret) {
1460 mlx4_err(dev, "bond for multifunction failed\n");
1461 mlx4_do_bond(dev, false);
1462 }
1463 }
1464 }
1465
1466 mutex_unlock(&priv->bond_mutex);
1467 if (!ret)
1468 mlx4_dbg(dev, "Device is bonded\n");
1469
1470 return ret;
1471 }
1472 EXPORT_SYMBOL_GPL(mlx4_bond);
1473
mlx4_unbond(struct mlx4_dev * dev)1474 int mlx4_unbond(struct mlx4_dev *dev)
1475 {
1476 int ret = 0;
1477 struct mlx4_priv *priv = mlx4_priv(dev);
1478
1479 mutex_lock(&priv->bond_mutex);
1480
1481 if (mlx4_is_bonded(dev)) {
1482 int ret2 = 0;
1483
1484 ret = mlx4_do_bond(dev, false);
1485 if (ret)
1486 mlx4_err(dev, "Failed to unbond device: %d\n", ret);
1487 if (mlx4_is_master(dev))
1488 ret2 = mlx4_mf_unbond(dev);
1489 if (ret2) {
1490 mlx4_warn(dev, "Failed to unbond device for multifunction (%d)\n", ret2);
1491 ret = ret2;
1492 }
1493 }
1494
1495 mutex_unlock(&priv->bond_mutex);
1496 if (!ret)
1497 mlx4_dbg(dev, "Device is unbonded\n");
1498
1499 return ret;
1500 }
1501 EXPORT_SYMBOL_GPL(mlx4_unbond);
1502
1503
mlx4_port_map_set(struct mlx4_dev * dev,struct mlx4_port_map * v2p)1504 int mlx4_port_map_set(struct mlx4_dev *dev, struct mlx4_port_map *v2p)
1505 {
1506 u8 port1 = v2p->port1;
1507 u8 port2 = v2p->port2;
1508 struct mlx4_priv *priv = mlx4_priv(dev);
1509 int err;
1510
1511 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP))
1512 return -EOPNOTSUPP;
1513
1514 mutex_lock(&priv->bond_mutex);
1515
1516 /* zero means keep current mapping for this port */
1517 if (port1 == 0)
1518 port1 = priv->v2p.port1;
1519 if (port2 == 0)
1520 port2 = priv->v2p.port2;
1521
1522 if ((port1 < 1) || (port1 > MLX4_MAX_PORTS) ||
1523 (port2 < 1) || (port2 > MLX4_MAX_PORTS) ||
1524 (port1 == 2 && port2 == 1)) {
1525 /* besides boundary checks cross mapping makes
1526 * no sense and therefore not allowed */
1527 err = -EINVAL;
1528 } else if ((port1 == priv->v2p.port1) &&
1529 (port2 == priv->v2p.port2)) {
1530 err = 0;
1531 } else {
1532 err = mlx4_virt2phy_port_map(dev, port1, port2);
1533 if (!err) {
1534 mlx4_dbg(dev, "port map changed: [%d][%d]\n",
1535 port1, port2);
1536 priv->v2p.port1 = port1;
1537 priv->v2p.port2 = port2;
1538 } else {
1539 mlx4_err(dev, "Failed to change port mape: %d\n", err);
1540 }
1541 }
1542
1543 mutex_unlock(&priv->bond_mutex);
1544 return err;
1545 }
1546 EXPORT_SYMBOL_GPL(mlx4_port_map_set);
1547
mlx4_load_fw(struct mlx4_dev * dev)1548 static int mlx4_load_fw(struct mlx4_dev *dev)
1549 {
1550 struct mlx4_priv *priv = mlx4_priv(dev);
1551 int err;
1552
1553 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
1554 GFP_HIGHUSER | __GFP_NOWARN, 0);
1555 if (!priv->fw.fw_icm) {
1556 mlx4_err(dev, "Couldn't allocate FW area, aborting\n");
1557 return -ENOMEM;
1558 }
1559
1560 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
1561 if (err) {
1562 mlx4_err(dev, "MAP_FA command failed, aborting\n");
1563 goto err_free;
1564 }
1565
1566 err = mlx4_RUN_FW(dev);
1567 if (err) {
1568 mlx4_err(dev, "RUN_FW command failed, aborting\n");
1569 goto err_unmap_fa;
1570 }
1571
1572 return 0;
1573
1574 err_unmap_fa:
1575 mlx4_UNMAP_FA(dev);
1576
1577 err_free:
1578 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1579 return err;
1580 }
1581
mlx4_init_cmpt_table(struct mlx4_dev * dev,u64 cmpt_base,int cmpt_entry_sz)1582 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
1583 int cmpt_entry_sz)
1584 {
1585 struct mlx4_priv *priv = mlx4_priv(dev);
1586 int err;
1587 int num_eqs;
1588
1589 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
1590 cmpt_base +
1591 ((u64) (MLX4_CMPT_TYPE_QP *
1592 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1593 cmpt_entry_sz, dev->caps.num_qps,
1594 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1595 0, 0);
1596 if (err)
1597 goto err;
1598
1599 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
1600 cmpt_base +
1601 ((u64) (MLX4_CMPT_TYPE_SRQ *
1602 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1603 cmpt_entry_sz, dev->caps.num_srqs,
1604 dev->caps.reserved_srqs, 0, 0);
1605 if (err)
1606 goto err_qp;
1607
1608 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
1609 cmpt_base +
1610 ((u64) (MLX4_CMPT_TYPE_CQ *
1611 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1612 cmpt_entry_sz, dev->caps.num_cqs,
1613 dev->caps.reserved_cqs, 0, 0);
1614 if (err)
1615 goto err_srq;
1616
1617 num_eqs = dev->phys_caps.num_phys_eqs;
1618 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
1619 cmpt_base +
1620 ((u64) (MLX4_CMPT_TYPE_EQ *
1621 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1622 cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
1623 if (err)
1624 goto err_cq;
1625
1626 return 0;
1627
1628 err_cq:
1629 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1630
1631 err_srq:
1632 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1633
1634 err_qp:
1635 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1636
1637 err:
1638 return err;
1639 }
1640
mlx4_init_icm(struct mlx4_dev * dev,struct mlx4_dev_cap * dev_cap,struct mlx4_init_hca_param * init_hca,u64 icm_size)1641 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
1642 struct mlx4_init_hca_param *init_hca, u64 icm_size)
1643 {
1644 struct mlx4_priv *priv = mlx4_priv(dev);
1645 u64 aux_pages;
1646 int num_eqs;
1647 int err;
1648
1649 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
1650 if (err) {
1651 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting\n");
1652 return err;
1653 }
1654
1655 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory\n",
1656 (unsigned long long) icm_size >> 10,
1657 (unsigned long long) aux_pages << 2);
1658
1659 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
1660 GFP_HIGHUSER | __GFP_NOWARN, 0);
1661 if (!priv->fw.aux_icm) {
1662 mlx4_err(dev, "Couldn't allocate aux memory, aborting\n");
1663 return -ENOMEM;
1664 }
1665
1666 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
1667 if (err) {
1668 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting\n");
1669 goto err_free_aux;
1670 }
1671
1672 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
1673 if (err) {
1674 mlx4_err(dev, "Failed to map cMPT context memory, aborting\n");
1675 goto err_unmap_aux;
1676 }
1677
1678
1679 num_eqs = dev->phys_caps.num_phys_eqs;
1680 err = mlx4_init_icm_table(dev, &priv->eq_table.table,
1681 init_hca->eqc_base, dev_cap->eqc_entry_sz,
1682 num_eqs, num_eqs, 0, 0);
1683 if (err) {
1684 mlx4_err(dev, "Failed to map EQ context memory, aborting\n");
1685 goto err_unmap_cmpt;
1686 }
1687
1688 /*
1689 * Reserved MTT entries must be aligned up to a cacheline
1690 * boundary, since the FW will write to them, while the driver
1691 * writes to all other MTT entries. (The variable
1692 * dev->caps.mtt_entry_sz below is really the MTT segment
1693 * size, not the raw entry size)
1694 */
1695 dev->caps.reserved_mtts =
1696 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
1697 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
1698
1699 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
1700 init_hca->mtt_base,
1701 dev->caps.mtt_entry_sz,
1702 dev->caps.num_mtts,
1703 dev->caps.reserved_mtts, 1, 0);
1704 if (err) {
1705 mlx4_err(dev, "Failed to map MTT context memory, aborting\n");
1706 goto err_unmap_eq;
1707 }
1708
1709 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
1710 init_hca->dmpt_base,
1711 dev_cap->dmpt_entry_sz,
1712 dev->caps.num_mpts,
1713 dev->caps.reserved_mrws, 1, 1);
1714 if (err) {
1715 mlx4_err(dev, "Failed to map dMPT context memory, aborting\n");
1716 goto err_unmap_mtt;
1717 }
1718
1719 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
1720 init_hca->qpc_base,
1721 dev_cap->qpc_entry_sz,
1722 dev->caps.num_qps,
1723 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1724 0, 0);
1725 if (err) {
1726 mlx4_err(dev, "Failed to map QP context memory, aborting\n");
1727 goto err_unmap_dmpt;
1728 }
1729
1730 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
1731 init_hca->auxc_base,
1732 dev_cap->aux_entry_sz,
1733 dev->caps.num_qps,
1734 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1735 0, 0);
1736 if (err) {
1737 mlx4_err(dev, "Failed to map AUXC context memory, aborting\n");
1738 goto err_unmap_qp;
1739 }
1740
1741 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
1742 init_hca->altc_base,
1743 dev_cap->altc_entry_sz,
1744 dev->caps.num_qps,
1745 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1746 0, 0);
1747 if (err) {
1748 mlx4_err(dev, "Failed to map ALTC context memory, aborting\n");
1749 goto err_unmap_auxc;
1750 }
1751
1752 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
1753 init_hca->rdmarc_base,
1754 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
1755 dev->caps.num_qps,
1756 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1757 0, 0);
1758 if (err) {
1759 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
1760 goto err_unmap_altc;
1761 }
1762
1763 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
1764 init_hca->cqc_base,
1765 dev_cap->cqc_entry_sz,
1766 dev->caps.num_cqs,
1767 dev->caps.reserved_cqs, 0, 0);
1768 if (err) {
1769 mlx4_err(dev, "Failed to map CQ context memory, aborting\n");
1770 goto err_unmap_rdmarc;
1771 }
1772
1773 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
1774 init_hca->srqc_base,
1775 dev_cap->srq_entry_sz,
1776 dev->caps.num_srqs,
1777 dev->caps.reserved_srqs, 0, 0);
1778 if (err) {
1779 mlx4_err(dev, "Failed to map SRQ context memory, aborting\n");
1780 goto err_unmap_cq;
1781 }
1782
1783 /*
1784 * For flow steering device managed mode it is required to use
1785 * mlx4_init_icm_table. For B0 steering mode it's not strictly
1786 * required, but for simplicity just map the whole multicast
1787 * group table now. The table isn't very big and it's a lot
1788 * easier than trying to track ref counts.
1789 */
1790 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1791 init_hca->mc_base,
1792 mlx4_get_mgm_entry_size(dev),
1793 dev->caps.num_mgms + dev->caps.num_amgms,
1794 dev->caps.num_mgms + dev->caps.num_amgms,
1795 0, 0);
1796 if (err) {
1797 mlx4_err(dev, "Failed to map MCG context memory, aborting\n");
1798 goto err_unmap_srq;
1799 }
1800
1801 return 0;
1802
1803 err_unmap_srq:
1804 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1805
1806 err_unmap_cq:
1807 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1808
1809 err_unmap_rdmarc:
1810 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1811
1812 err_unmap_altc:
1813 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1814
1815 err_unmap_auxc:
1816 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1817
1818 err_unmap_qp:
1819 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1820
1821 err_unmap_dmpt:
1822 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1823
1824 err_unmap_mtt:
1825 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1826
1827 err_unmap_eq:
1828 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1829
1830 err_unmap_cmpt:
1831 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1832 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1833 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1834 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1835
1836 err_unmap_aux:
1837 mlx4_UNMAP_ICM_AUX(dev);
1838
1839 err_free_aux:
1840 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1841
1842 return err;
1843 }
1844
mlx4_free_icms(struct mlx4_dev * dev)1845 static void mlx4_free_icms(struct mlx4_dev *dev)
1846 {
1847 struct mlx4_priv *priv = mlx4_priv(dev);
1848
1849 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1850 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1851 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1852 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1853 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1854 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1855 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1856 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1857 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1858 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1859 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1860 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1861 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1862 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1863
1864 mlx4_UNMAP_ICM_AUX(dev);
1865 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1866 }
1867
mlx4_slave_exit(struct mlx4_dev * dev)1868 static void mlx4_slave_exit(struct mlx4_dev *dev)
1869 {
1870 struct mlx4_priv *priv = mlx4_priv(dev);
1871
1872 mutex_lock(&priv->cmd.slave_cmd_mutex);
1873 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP,
1874 MLX4_COMM_TIME))
1875 mlx4_warn(dev, "Failed to close slave function\n");
1876 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1877 }
1878
map_bf_area(struct mlx4_dev * dev)1879 static int map_bf_area(struct mlx4_dev *dev)
1880 {
1881 struct mlx4_priv *priv = mlx4_priv(dev);
1882 resource_size_t bf_start;
1883 resource_size_t bf_len;
1884 int err = 0;
1885
1886 if (!dev->caps.bf_reg_size)
1887 return -ENXIO;
1888
1889 bf_start = pci_resource_start(dev->persist->pdev, 2) +
1890 (dev->caps.num_uars << PAGE_SHIFT);
1891 bf_len = pci_resource_len(dev->persist->pdev, 2) -
1892 (dev->caps.num_uars << PAGE_SHIFT);
1893 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1894 if (!priv->bf_mapping)
1895 err = -ENOMEM;
1896
1897 return err;
1898 }
1899
unmap_bf_area(struct mlx4_dev * dev)1900 static void unmap_bf_area(struct mlx4_dev *dev)
1901 {
1902 if (mlx4_priv(dev)->bf_mapping)
1903 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1904 }
1905
mlx4_read_clock(struct mlx4_dev * dev)1906 u64 mlx4_read_clock(struct mlx4_dev *dev)
1907 {
1908 u32 clockhi, clocklo, clockhi1;
1909 u64 cycles;
1910 int i;
1911 struct mlx4_priv *priv = mlx4_priv(dev);
1912
1913 for (i = 0; i < 10; i++) {
1914 clockhi = swab32(readl(priv->clock_mapping));
1915 clocklo = swab32(readl(priv->clock_mapping + 4));
1916 clockhi1 = swab32(readl(priv->clock_mapping));
1917 if (clockhi == clockhi1)
1918 break;
1919 }
1920
1921 cycles = (u64) clockhi << 32 | (u64) clocklo;
1922
1923 return cycles;
1924 }
1925 EXPORT_SYMBOL_GPL(mlx4_read_clock);
1926
1927
map_internal_clock(struct mlx4_dev * dev)1928 static int map_internal_clock(struct mlx4_dev *dev)
1929 {
1930 struct mlx4_priv *priv = mlx4_priv(dev);
1931
1932 priv->clock_mapping =
1933 ioremap(pci_resource_start(dev->persist->pdev,
1934 priv->fw.clock_bar) +
1935 priv->fw.clock_offset, MLX4_CLOCK_SIZE);
1936
1937 if (!priv->clock_mapping)
1938 return -ENOMEM;
1939
1940 return 0;
1941 }
1942
mlx4_get_internal_clock_params(struct mlx4_dev * dev,struct mlx4_clock_params * params)1943 int mlx4_get_internal_clock_params(struct mlx4_dev *dev,
1944 struct mlx4_clock_params *params)
1945 {
1946 struct mlx4_priv *priv = mlx4_priv(dev);
1947
1948 if (mlx4_is_slave(dev))
1949 return -EOPNOTSUPP;
1950
1951 if (!params)
1952 return -EINVAL;
1953
1954 params->bar = priv->fw.clock_bar;
1955 params->offset = priv->fw.clock_offset;
1956 params->size = MLX4_CLOCK_SIZE;
1957
1958 return 0;
1959 }
1960 EXPORT_SYMBOL_GPL(mlx4_get_internal_clock_params);
1961
unmap_internal_clock(struct mlx4_dev * dev)1962 static void unmap_internal_clock(struct mlx4_dev *dev)
1963 {
1964 struct mlx4_priv *priv = mlx4_priv(dev);
1965
1966 if (priv->clock_mapping)
1967 iounmap(priv->clock_mapping);
1968 }
1969
mlx4_close_hca(struct mlx4_dev * dev)1970 static void mlx4_close_hca(struct mlx4_dev *dev)
1971 {
1972 unmap_internal_clock(dev);
1973 unmap_bf_area(dev);
1974 if (mlx4_is_slave(dev))
1975 mlx4_slave_exit(dev);
1976 else {
1977 mlx4_CLOSE_HCA(dev, 0);
1978 mlx4_free_icms(dev);
1979 }
1980 }
1981
mlx4_close_fw(struct mlx4_dev * dev)1982 static void mlx4_close_fw(struct mlx4_dev *dev)
1983 {
1984 if (!mlx4_is_slave(dev)) {
1985 mlx4_UNMAP_FA(dev);
1986 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1987 }
1988 }
1989
mlx4_comm_check_offline(struct mlx4_dev * dev)1990 static int mlx4_comm_check_offline(struct mlx4_dev *dev)
1991 {
1992 #define COMM_CHAN_OFFLINE_OFFSET 0x09
1993
1994 u32 comm_flags;
1995 u32 offline_bit;
1996 unsigned long end;
1997 struct mlx4_priv *priv = mlx4_priv(dev);
1998
1999 end = msecs_to_jiffies(MLX4_COMM_OFFLINE_TIME_OUT) + jiffies;
2000 while (time_before(jiffies, end)) {
2001 comm_flags = swab32(readl((__iomem char *)priv->mfunc.comm +
2002 MLX4_COMM_CHAN_FLAGS));
2003 offline_bit = (comm_flags &
2004 (u32)(1 << COMM_CHAN_OFFLINE_OFFSET));
2005 if (!offline_bit)
2006 return 0;
2007
2008 /* If device removal has been requested,
2009 * do not continue retrying.
2010 */
2011 if (dev->persist->interface_state &
2012 MLX4_INTERFACE_STATE_NOWAIT)
2013 break;
2014
2015 /* There are cases as part of AER/Reset flow that PF needs
2016 * around 100 msec to load. We therefore sleep for 100 msec
2017 * to allow other tasks to make use of that CPU during this
2018 * time interval.
2019 */
2020 msleep(100);
2021 }
2022 mlx4_err(dev, "Communication channel is offline.\n");
2023 return -EIO;
2024 }
2025
mlx4_reset_vf_support(struct mlx4_dev * dev)2026 static void mlx4_reset_vf_support(struct mlx4_dev *dev)
2027 {
2028 #define COMM_CHAN_RST_OFFSET 0x1e
2029
2030 struct mlx4_priv *priv = mlx4_priv(dev);
2031 u32 comm_rst;
2032 u32 comm_caps;
2033
2034 comm_caps = swab32(readl((__iomem char *)priv->mfunc.comm +
2035 MLX4_COMM_CHAN_CAPS));
2036 comm_rst = (comm_caps & (u32)(1 << COMM_CHAN_RST_OFFSET));
2037
2038 if (comm_rst)
2039 dev->caps.vf_caps |= MLX4_VF_CAP_FLAG_RESET;
2040 }
2041
mlx4_init_slave(struct mlx4_dev * dev)2042 static int mlx4_init_slave(struct mlx4_dev *dev)
2043 {
2044 struct mlx4_priv *priv = mlx4_priv(dev);
2045 u64 dma = (u64) priv->mfunc.vhcr_dma;
2046 int ret_from_reset = 0;
2047 u32 slave_read;
2048 u32 cmd_channel_ver;
2049
2050 if (atomic_read(&pf_loading)) {
2051 mlx4_warn(dev, "PF is not ready - Deferring probe\n");
2052 return -EPROBE_DEFER;
2053 }
2054
2055 mutex_lock(&priv->cmd.slave_cmd_mutex);
2056 priv->cmd.max_cmds = 1;
2057 if (mlx4_comm_check_offline(dev)) {
2058 mlx4_err(dev, "PF is not responsive, skipping initialization\n");
2059 goto err_offline;
2060 }
2061
2062 mlx4_reset_vf_support(dev);
2063 mlx4_warn(dev, "Sending reset\n");
2064 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
2065 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME);
2066 /* if we are in the middle of flr the slave will try
2067 * NUM_OF_RESET_RETRIES times before leaving.*/
2068 if (ret_from_reset) {
2069 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
2070 mlx4_warn(dev, "slave is currently in the middle of FLR - Deferring probe\n");
2071 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2072 return -EPROBE_DEFER;
2073 } else
2074 goto err;
2075 }
2076
2077 /* check the driver version - the slave I/F revision
2078 * must match the master's */
2079 slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
2080 cmd_channel_ver = mlx4_comm_get_version();
2081
2082 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
2083 MLX4_COMM_GET_IF_REV(slave_read)) {
2084 mlx4_err(dev, "slave driver version is not supported by the master\n");
2085 goto err;
2086 }
2087
2088 mlx4_warn(dev, "Sending vhcr0\n");
2089 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
2090 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
2091 goto err;
2092 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
2093 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
2094 goto err;
2095 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
2096 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
2097 goto err;
2098 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma,
2099 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
2100 goto err;
2101
2102 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2103 return 0;
2104
2105 err:
2106 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP, 0);
2107 err_offline:
2108 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2109 return -EIO;
2110 }
2111
mlx4_parav_master_pf_caps(struct mlx4_dev * dev)2112 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
2113 {
2114 int i;
2115
2116 for (i = 1; i <= dev->caps.num_ports; i++) {
2117 if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
2118 dev->caps.gid_table_len[i] =
2119 mlx4_get_slave_num_gids(dev, 0, i);
2120 else
2121 dev->caps.gid_table_len[i] = 1;
2122 dev->caps.pkey_table_len[i] =
2123 dev->phys_caps.pkey_phys_table_len[i] - 1;
2124 }
2125 }
2126
choose_log_fs_mgm_entry_size(int qp_per_entry)2127 static int choose_log_fs_mgm_entry_size(int qp_per_entry)
2128 {
2129 int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE;
2130
2131 for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE;
2132 i++) {
2133 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2))
2134 break;
2135 }
2136
2137 return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1;
2138 }
2139
dmfs_high_rate_steering_mode_str(int dmfs_high_steer_mode)2140 static const char *dmfs_high_rate_steering_mode_str(int dmfs_high_steer_mode)
2141 {
2142 switch (dmfs_high_steer_mode) {
2143 case MLX4_STEERING_DMFS_A0_DEFAULT:
2144 return "default performance";
2145
2146 case MLX4_STEERING_DMFS_A0_DYNAMIC:
2147 return "dynamic hybrid mode";
2148
2149 case MLX4_STEERING_DMFS_A0_STATIC:
2150 return "performance optimized for limited rule configuration (static)";
2151
2152 case MLX4_STEERING_DMFS_A0_DISABLE:
2153 return "disabled performance optimized steering";
2154
2155 case MLX4_STEERING_DMFS_A0_NOT_SUPPORTED:
2156 return "performance optimized steering not supported";
2157
2158 default:
2159 return "Unrecognized mode";
2160 }
2161 }
2162
2163 #define MLX4_DMFS_A0_STEERING (1UL << 2)
2164
choose_steering_mode(struct mlx4_dev * dev,struct mlx4_dev_cap * dev_cap)2165 static void choose_steering_mode(struct mlx4_dev *dev,
2166 struct mlx4_dev_cap *dev_cap)
2167 {
2168 if (mlx4_log_num_mgm_entry_size <= 0) {
2169 if ((-mlx4_log_num_mgm_entry_size) & MLX4_DMFS_A0_STEERING) {
2170 if (dev->caps.dmfs_high_steer_mode ==
2171 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
2172 mlx4_err(dev, "DMFS high rate mode not supported\n");
2173 else
2174 dev->caps.dmfs_high_steer_mode =
2175 MLX4_STEERING_DMFS_A0_STATIC;
2176 }
2177 }
2178
2179 if (mlx4_log_num_mgm_entry_size <= 0 &&
2180 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN &&
2181 (!mlx4_is_mfunc(dev) ||
2182 (dev_cap->fs_max_num_qp_per_entry >=
2183 (dev->persist->num_vfs + 1))) &&
2184 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >=
2185 MLX4_MIN_MGM_LOG_ENTRY_SIZE) {
2186 dev->oper_log_mgm_entry_size =
2187 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry);
2188 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
2189 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
2190 dev->caps.fs_log_max_ucast_qp_range_size =
2191 dev_cap->fs_log_max_ucast_qp_range_size;
2192 } else {
2193 if (dev->caps.dmfs_high_steer_mode !=
2194 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
2195 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DISABLE;
2196 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER &&
2197 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
2198 dev->caps.steering_mode = MLX4_STEERING_MODE_B0;
2199 else {
2200 dev->caps.steering_mode = MLX4_STEERING_MODE_A0;
2201
2202 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER ||
2203 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
2204 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags set to use B0 steering - falling back to A0 steering mode\n");
2205 }
2206 dev->oper_log_mgm_entry_size =
2207 mlx4_log_num_mgm_entry_size > 0 ?
2208 mlx4_log_num_mgm_entry_size :
2209 MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
2210 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev);
2211 }
2212 mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, modparam log_num_mgm_entry_size = %d\n",
2213 mlx4_steering_mode_str(dev->caps.steering_mode),
2214 dev->oper_log_mgm_entry_size,
2215 mlx4_log_num_mgm_entry_size);
2216 }
2217
choose_tunnel_offload_mode(struct mlx4_dev * dev,struct mlx4_dev_cap * dev_cap)2218 static void choose_tunnel_offload_mode(struct mlx4_dev *dev,
2219 struct mlx4_dev_cap *dev_cap)
2220 {
2221 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2222 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
2223 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_VXLAN;
2224 else
2225 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_NONE;
2226
2227 mlx4_dbg(dev, "Tunneling offload mode is: %s\n", (dev->caps.tunnel_offload_mode
2228 == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) ? "vxlan" : "none");
2229 }
2230
mlx4_validate_optimized_steering(struct mlx4_dev * dev)2231 static int mlx4_validate_optimized_steering(struct mlx4_dev *dev)
2232 {
2233 int i;
2234 struct mlx4_port_cap port_cap;
2235
2236 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
2237 return -EINVAL;
2238
2239 for (i = 1; i <= dev->caps.num_ports; i++) {
2240 if (mlx4_dev_port(dev, i, &port_cap)) {
2241 mlx4_err(dev,
2242 "QUERY_DEV_CAP command failed, can't verify DMFS high rate steering.\n");
2243 } else if ((dev->caps.dmfs_high_steer_mode !=
2244 MLX4_STEERING_DMFS_A0_DEFAULT) &&
2245 (port_cap.dmfs_optimized_state ==
2246 !!(dev->caps.dmfs_high_steer_mode ==
2247 MLX4_STEERING_DMFS_A0_DISABLE))) {
2248 mlx4_err(dev,
2249 "DMFS high rate steer mode differ, driver requested %s but %s in FW.\n",
2250 dmfs_high_rate_steering_mode_str(
2251 dev->caps.dmfs_high_steer_mode),
2252 (port_cap.dmfs_optimized_state ?
2253 "enabled" : "disabled"));
2254 }
2255 }
2256
2257 return 0;
2258 }
2259
mlx4_init_fw(struct mlx4_dev * dev)2260 static int mlx4_init_fw(struct mlx4_dev *dev)
2261 {
2262 struct mlx4_mod_stat_cfg mlx4_cfg;
2263 int err = 0;
2264
2265 if (!mlx4_is_slave(dev)) {
2266 err = mlx4_QUERY_FW(dev);
2267 if (err) {
2268 if (err == -EACCES)
2269 mlx4_info(dev, "non-primary physical function, skipping\n");
2270 else
2271 mlx4_err(dev, "QUERY_FW command failed, aborting\n");
2272 return err;
2273 }
2274
2275 err = mlx4_load_fw(dev);
2276 if (err) {
2277 mlx4_err(dev, "Failed to start FW, aborting\n");
2278 return err;
2279 }
2280
2281 mlx4_cfg.log_pg_sz_m = 1;
2282 mlx4_cfg.log_pg_sz = 0;
2283 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
2284 if (err)
2285 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
2286 }
2287
2288 return err;
2289 }
2290
mlx4_init_hca(struct mlx4_dev * dev)2291 static int mlx4_init_hca(struct mlx4_dev *dev)
2292 {
2293 struct mlx4_priv *priv = mlx4_priv(dev);
2294 struct mlx4_init_hca_param *init_hca = NULL;
2295 struct mlx4_dev_cap *dev_cap = NULL;
2296 struct mlx4_adapter adapter;
2297 struct mlx4_profile profile;
2298 u64 icm_size;
2299 struct mlx4_config_dev_params params;
2300 int err;
2301
2302 if (!mlx4_is_slave(dev)) {
2303 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL);
2304 init_hca = kzalloc(sizeof(*init_hca), GFP_KERNEL);
2305
2306 if (!dev_cap || !init_hca) {
2307 err = -ENOMEM;
2308 goto out_free;
2309 }
2310
2311 err = mlx4_dev_cap(dev, dev_cap);
2312 if (err) {
2313 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
2314 goto out_free;
2315 }
2316
2317 choose_steering_mode(dev, dev_cap);
2318 choose_tunnel_offload_mode(dev, dev_cap);
2319
2320 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC &&
2321 mlx4_is_master(dev))
2322 dev->caps.function_caps |= MLX4_FUNC_CAP_DMFS_A0_STATIC;
2323
2324 err = mlx4_get_phys_port_id(dev);
2325 if (err)
2326 mlx4_err(dev, "Fail to get physical port id\n");
2327
2328 if (mlx4_is_master(dev))
2329 mlx4_parav_master_pf_caps(dev);
2330
2331 if (mlx4_low_memory_profile()) {
2332 mlx4_info(dev, "Running from within kdump kernel. Using low memory profile\n");
2333 profile = low_mem_profile;
2334 } else {
2335 profile = default_profile;
2336 }
2337 if (dev->caps.steering_mode ==
2338 MLX4_STEERING_MODE_DEVICE_MANAGED)
2339 profile.num_mcg = MLX4_FS_NUM_MCG;
2340
2341 icm_size = mlx4_make_profile(dev, &profile, dev_cap,
2342 init_hca);
2343 if ((long long) icm_size < 0) {
2344 err = icm_size;
2345 goto out_free;
2346 }
2347
2348 if (enable_4k_uar || !dev->persist->num_vfs) {
2349 init_hca->log_uar_sz = ilog2(dev->caps.num_uars) +
2350 PAGE_SHIFT - DEFAULT_UAR_PAGE_SHIFT;
2351 init_hca->uar_page_sz = DEFAULT_UAR_PAGE_SHIFT - 12;
2352 } else {
2353 init_hca->log_uar_sz = ilog2(dev->caps.num_uars);
2354 init_hca->uar_page_sz = PAGE_SHIFT - 12;
2355 }
2356
2357 init_hca->mw_enabled = 0;
2358 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2359 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
2360 init_hca->mw_enabled = INIT_HCA_TPT_MW_ENABLE;
2361
2362 err = mlx4_init_icm(dev, dev_cap, init_hca, icm_size);
2363 if (err)
2364 goto out_free;
2365
2366 err = mlx4_INIT_HCA(dev, init_hca);
2367 if (err) {
2368 mlx4_err(dev, "INIT_HCA command failed, aborting\n");
2369 goto err_free_icm;
2370 }
2371
2372 if (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) {
2373 err = mlx4_query_func(dev, dev_cap);
2374 if (err < 0) {
2375 mlx4_err(dev, "QUERY_FUNC command failed, aborting.\n");
2376 goto err_close;
2377 } else if (err & MLX4_QUERY_FUNC_NUM_SYS_EQS) {
2378 dev->caps.num_eqs = dev_cap->max_eqs;
2379 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
2380 dev->caps.reserved_uars = dev_cap->reserved_uars;
2381 }
2382 }
2383
2384 /*
2385 * If TS is supported by FW
2386 * read HCA frequency by QUERY_HCA command
2387 */
2388 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
2389 err = mlx4_QUERY_HCA(dev, init_hca);
2390 if (err) {
2391 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp\n");
2392 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2393 } else {
2394 dev->caps.hca_core_clock =
2395 init_hca->hca_core_clock;
2396 }
2397
2398 /* In case we got HCA frequency 0 - disable timestamping
2399 * to avoid dividing by zero
2400 */
2401 if (!dev->caps.hca_core_clock) {
2402 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2403 mlx4_err(dev,
2404 "HCA frequency is 0 - timestamping is not supported\n");
2405 } else if (map_internal_clock(dev)) {
2406 /*
2407 * Map internal clock,
2408 * in case of failure disable timestamping
2409 */
2410 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2411 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported\n");
2412 }
2413 }
2414
2415 if (dev->caps.dmfs_high_steer_mode !=
2416 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) {
2417 if (mlx4_validate_optimized_steering(dev))
2418 mlx4_warn(dev, "Optimized steering validation failed\n");
2419
2420 if (dev->caps.dmfs_high_steer_mode ==
2421 MLX4_STEERING_DMFS_A0_DISABLE) {
2422 dev->caps.dmfs_high_rate_qpn_base =
2423 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
2424 dev->caps.dmfs_high_rate_qpn_range =
2425 MLX4_A0_STEERING_TABLE_SIZE;
2426 }
2427
2428 mlx4_info(dev, "DMFS high rate steer mode is: %s\n",
2429 dmfs_high_rate_steering_mode_str(
2430 dev->caps.dmfs_high_steer_mode));
2431 }
2432 } else {
2433 err = mlx4_init_slave(dev);
2434 if (err) {
2435 if (err != -EPROBE_DEFER)
2436 mlx4_err(dev, "Failed to initialize slave\n");
2437 return err;
2438 }
2439
2440 err = mlx4_slave_cap(dev);
2441 if (err) {
2442 mlx4_err(dev, "Failed to obtain slave caps\n");
2443 goto err_close;
2444 }
2445 }
2446
2447 if (map_bf_area(dev))
2448 mlx4_dbg(dev, "Failed to map blue flame area\n");
2449
2450 /*Only the master set the ports, all the rest got it from it.*/
2451 if (!mlx4_is_slave(dev))
2452 mlx4_set_port_mask(dev);
2453
2454 err = mlx4_QUERY_ADAPTER(dev, &adapter);
2455 if (err) {
2456 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting\n");
2457 goto unmap_bf;
2458 }
2459
2460 /* Query CONFIG_DEV parameters */
2461 err = mlx4_config_dev_retrieval(dev, ¶ms);
2462 if (err && err != -EOPNOTSUPP) {
2463 mlx4_err(dev, "Failed to query CONFIG_DEV parameters\n");
2464 } else if (!err) {
2465 dev->caps.rx_checksum_flags_port[1] = params.rx_csum_flags_port_1;
2466 dev->caps.rx_checksum_flags_port[2] = params.rx_csum_flags_port_2;
2467 }
2468 priv->eq_table.inta_pin = adapter.inta_pin;
2469 memcpy(dev->board_id, adapter.board_id, sizeof(dev->board_id));
2470
2471 err = 0;
2472 goto out_free;
2473
2474 unmap_bf:
2475 unmap_internal_clock(dev);
2476 unmap_bf_area(dev);
2477
2478 if (mlx4_is_slave(dev))
2479 mlx4_slave_destroy_special_qp_cap(dev);
2480
2481 err_close:
2482 if (mlx4_is_slave(dev))
2483 mlx4_slave_exit(dev);
2484 else
2485 mlx4_CLOSE_HCA(dev, 0);
2486
2487 err_free_icm:
2488 if (!mlx4_is_slave(dev))
2489 mlx4_free_icms(dev);
2490
2491 out_free:
2492 kfree(dev_cap);
2493 kfree(init_hca);
2494
2495 return err;
2496 }
2497
mlx4_init_counters_table(struct mlx4_dev * dev)2498 static int mlx4_init_counters_table(struct mlx4_dev *dev)
2499 {
2500 struct mlx4_priv *priv = mlx4_priv(dev);
2501 int nent_pow2;
2502
2503 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2504 return -ENOENT;
2505
2506 if (!dev->caps.max_counters)
2507 return -ENOSPC;
2508
2509 nent_pow2 = roundup_pow_of_two(dev->caps.max_counters);
2510 /* reserve last counter index for sink counter */
2511 return mlx4_bitmap_init(&priv->counters_bitmap, nent_pow2,
2512 nent_pow2 - 1, 0,
2513 nent_pow2 - dev->caps.max_counters + 1);
2514 }
2515
mlx4_cleanup_counters_table(struct mlx4_dev * dev)2516 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
2517 {
2518 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2519 return;
2520
2521 if (!dev->caps.max_counters)
2522 return;
2523
2524 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
2525 }
2526
mlx4_cleanup_default_counters(struct mlx4_dev * dev)2527 static void mlx4_cleanup_default_counters(struct mlx4_dev *dev)
2528 {
2529 struct mlx4_priv *priv = mlx4_priv(dev);
2530 int port;
2531
2532 for (port = 0; port < dev->caps.num_ports; port++)
2533 if (priv->def_counter[port] != -1)
2534 mlx4_counter_free(dev, priv->def_counter[port]);
2535 }
2536
mlx4_allocate_default_counters(struct mlx4_dev * dev)2537 static int mlx4_allocate_default_counters(struct mlx4_dev *dev)
2538 {
2539 struct mlx4_priv *priv = mlx4_priv(dev);
2540 int port, err = 0;
2541 u32 idx;
2542
2543 for (port = 0; port < dev->caps.num_ports; port++)
2544 priv->def_counter[port] = -1;
2545
2546 for (port = 0; port < dev->caps.num_ports; port++) {
2547 err = mlx4_counter_alloc(dev, &idx, MLX4_RES_USAGE_DRIVER);
2548
2549 if (!err || err == -ENOSPC) {
2550 priv->def_counter[port] = idx;
2551 err = 0;
2552 } else if (err == -ENOENT) {
2553 err = 0;
2554 continue;
2555 } else if (mlx4_is_slave(dev) && err == -EINVAL) {
2556 priv->def_counter[port] = MLX4_SINK_COUNTER_INDEX(dev);
2557 mlx4_warn(dev, "can't allocate counter from old PF driver, using index %d\n",
2558 MLX4_SINK_COUNTER_INDEX(dev));
2559 err = 0;
2560 } else {
2561 mlx4_err(dev, "%s: failed to allocate default counter port %d err %d\n",
2562 __func__, port + 1, err);
2563 mlx4_cleanup_default_counters(dev);
2564 return err;
2565 }
2566
2567 mlx4_dbg(dev, "%s: default counter index %d for port %d\n",
2568 __func__, priv->def_counter[port], port + 1);
2569 }
2570
2571 return err;
2572 }
2573
__mlx4_counter_alloc(struct mlx4_dev * dev,u32 * idx)2574 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
2575 {
2576 struct mlx4_priv *priv = mlx4_priv(dev);
2577
2578 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2579 return -ENOENT;
2580
2581 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
2582 if (*idx == -1) {
2583 *idx = MLX4_SINK_COUNTER_INDEX(dev);
2584 return -ENOSPC;
2585 }
2586
2587 return 0;
2588 }
2589
mlx4_counter_alloc(struct mlx4_dev * dev,u32 * idx,u8 usage)2590 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx, u8 usage)
2591 {
2592 u32 in_modifier = RES_COUNTER | (((u32)usage & 3) << 30);
2593 u64 out_param;
2594 int err;
2595
2596 if (mlx4_is_mfunc(dev)) {
2597 err = mlx4_cmd_imm(dev, 0, &out_param, in_modifier,
2598 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
2599 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
2600 if (!err)
2601 *idx = get_param_l(&out_param);
2602 if (WARN_ON(err == -ENOSPC))
2603 err = -EINVAL;
2604 return err;
2605 }
2606 return __mlx4_counter_alloc(dev, idx);
2607 }
2608 EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
2609
__mlx4_clear_if_stat(struct mlx4_dev * dev,u8 counter_index)2610 static int __mlx4_clear_if_stat(struct mlx4_dev *dev,
2611 u8 counter_index)
2612 {
2613 struct mlx4_cmd_mailbox *if_stat_mailbox;
2614 int err;
2615 u32 if_stat_in_mod = (counter_index & 0xff) | MLX4_QUERY_IF_STAT_RESET;
2616
2617 if_stat_mailbox = mlx4_alloc_cmd_mailbox(dev);
2618 if (IS_ERR(if_stat_mailbox))
2619 return PTR_ERR(if_stat_mailbox);
2620
2621 err = mlx4_cmd_box(dev, 0, if_stat_mailbox->dma, if_stat_in_mod, 0,
2622 MLX4_CMD_QUERY_IF_STAT, MLX4_CMD_TIME_CLASS_C,
2623 MLX4_CMD_NATIVE);
2624
2625 mlx4_free_cmd_mailbox(dev, if_stat_mailbox);
2626 return err;
2627 }
2628
__mlx4_counter_free(struct mlx4_dev * dev,u32 idx)2629 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
2630 {
2631 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2632 return;
2633
2634 if (idx == MLX4_SINK_COUNTER_INDEX(dev))
2635 return;
2636
2637 __mlx4_clear_if_stat(dev, idx);
2638
2639 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR);
2640 return;
2641 }
2642
mlx4_counter_free(struct mlx4_dev * dev,u32 idx)2643 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
2644 {
2645 u64 in_param = 0;
2646
2647 if (mlx4_is_mfunc(dev)) {
2648 set_param_l(&in_param, idx);
2649 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
2650 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
2651 MLX4_CMD_WRAPPED);
2652 return;
2653 }
2654 __mlx4_counter_free(dev, idx);
2655 }
2656 EXPORT_SYMBOL_GPL(mlx4_counter_free);
2657
mlx4_get_default_counter_index(struct mlx4_dev * dev,int port)2658 int mlx4_get_default_counter_index(struct mlx4_dev *dev, int port)
2659 {
2660 struct mlx4_priv *priv = mlx4_priv(dev);
2661
2662 return priv->def_counter[port - 1];
2663 }
2664 EXPORT_SYMBOL_GPL(mlx4_get_default_counter_index);
2665
mlx4_set_admin_guid(struct mlx4_dev * dev,__be64 guid,int entry,int port)2666 void mlx4_set_admin_guid(struct mlx4_dev *dev, __be64 guid, int entry, int port)
2667 {
2668 struct mlx4_priv *priv = mlx4_priv(dev);
2669
2670 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
2671 }
2672 EXPORT_SYMBOL_GPL(mlx4_set_admin_guid);
2673
mlx4_get_admin_guid(struct mlx4_dev * dev,int entry,int port)2674 __be64 mlx4_get_admin_guid(struct mlx4_dev *dev, int entry, int port)
2675 {
2676 struct mlx4_priv *priv = mlx4_priv(dev);
2677
2678 return priv->mfunc.master.vf_admin[entry].vport[port].guid;
2679 }
2680 EXPORT_SYMBOL_GPL(mlx4_get_admin_guid);
2681
mlx4_set_random_admin_guid(struct mlx4_dev * dev,int entry,int port)2682 void mlx4_set_random_admin_guid(struct mlx4_dev *dev, int entry, int port)
2683 {
2684 struct mlx4_priv *priv = mlx4_priv(dev);
2685 __be64 guid;
2686
2687 /* hw GUID */
2688 if (entry == 0)
2689 return;
2690
2691 get_random_bytes((char *)&guid, sizeof(guid));
2692 guid &= ~(cpu_to_be64(1ULL << 56));
2693 guid |= cpu_to_be64(1ULL << 57);
2694 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
2695 }
2696
mlx4_setup_hca(struct mlx4_dev * dev)2697 static int mlx4_setup_hca(struct mlx4_dev *dev)
2698 {
2699 struct mlx4_priv *priv = mlx4_priv(dev);
2700 int err;
2701 int port;
2702 __be32 ib_port_default_caps;
2703
2704 err = mlx4_init_uar_table(dev);
2705 if (err) {
2706 mlx4_err(dev, "Failed to initialize user access region table, aborting\n");
2707 return err;
2708 }
2709
2710 err = mlx4_uar_alloc(dev, &priv->driver_uar);
2711 if (err) {
2712 mlx4_err(dev, "Failed to allocate driver access region, aborting\n");
2713 goto err_uar_table_free;
2714 }
2715
2716 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
2717 if (!priv->kar) {
2718 mlx4_err(dev, "Couldn't map kernel access region, aborting\n");
2719 err = -ENOMEM;
2720 goto err_uar_free;
2721 }
2722
2723 err = mlx4_init_pd_table(dev);
2724 if (err) {
2725 mlx4_err(dev, "Failed to initialize protection domain table, aborting\n");
2726 goto err_kar_unmap;
2727 }
2728
2729 err = mlx4_init_xrcd_table(dev);
2730 if (err) {
2731 mlx4_err(dev, "Failed to initialize reliable connection domain table, aborting\n");
2732 goto err_pd_table_free;
2733 }
2734
2735 err = mlx4_init_mr_table(dev);
2736 if (err) {
2737 mlx4_err(dev, "Failed to initialize memory region table, aborting\n");
2738 goto err_xrcd_table_free;
2739 }
2740
2741 if (!mlx4_is_slave(dev)) {
2742 err = mlx4_init_mcg_table(dev);
2743 if (err) {
2744 mlx4_err(dev, "Failed to initialize multicast group table, aborting\n");
2745 goto err_mr_table_free;
2746 }
2747 err = mlx4_config_mad_demux(dev);
2748 if (err) {
2749 mlx4_err(dev, "Failed in config_mad_demux, aborting\n");
2750 goto err_mcg_table_free;
2751 }
2752 }
2753
2754 err = mlx4_init_eq_table(dev);
2755 if (err) {
2756 mlx4_err(dev, "Failed to initialize event queue table, aborting\n");
2757 goto err_mcg_table_free;
2758 }
2759
2760 err = mlx4_cmd_use_events(dev);
2761 if (err) {
2762 mlx4_err(dev, "Failed to switch to event-driven firmware commands, aborting\n");
2763 goto err_eq_table_free;
2764 }
2765
2766 err = mlx4_NOP(dev);
2767 if (err) {
2768 if (dev->flags & MLX4_FLAG_MSI_X) {
2769 mlx4_warn(dev, "NOP command failed to generate MSI-X interrupt IRQ %d)\n",
2770 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
2771 mlx4_warn(dev, "Trying again without MSI-X\n");
2772 } else {
2773 mlx4_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting\n",
2774 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
2775 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
2776 }
2777
2778 goto err_cmd_poll;
2779 }
2780
2781 mlx4_dbg(dev, "NOP command IRQ test passed\n");
2782
2783 err = mlx4_init_cq_table(dev);
2784 if (err) {
2785 mlx4_err(dev, "Failed to initialize completion queue table, aborting\n");
2786 goto err_cmd_poll;
2787 }
2788
2789 err = mlx4_init_srq_table(dev);
2790 if (err) {
2791 mlx4_err(dev, "Failed to initialize shared receive queue table, aborting\n");
2792 goto err_cq_table_free;
2793 }
2794
2795 err = mlx4_init_qp_table(dev);
2796 if (err) {
2797 mlx4_err(dev, "Failed to initialize queue pair table, aborting\n");
2798 goto err_srq_table_free;
2799 }
2800
2801 if (!mlx4_is_slave(dev)) {
2802 err = mlx4_init_counters_table(dev);
2803 if (err && err != -ENOENT) {
2804 mlx4_err(dev, "Failed to initialize counters table, aborting\n");
2805 goto err_qp_table_free;
2806 }
2807 }
2808
2809 err = mlx4_allocate_default_counters(dev);
2810 if (err) {
2811 mlx4_err(dev, "Failed to allocate default counters, aborting\n");
2812 goto err_counters_table_free;
2813 }
2814
2815 if (!mlx4_is_slave(dev)) {
2816 for (port = 1; port <= dev->caps.num_ports; port++) {
2817 ib_port_default_caps = 0;
2818 err = mlx4_get_port_ib_caps(dev, port,
2819 &ib_port_default_caps);
2820 if (err)
2821 mlx4_warn(dev, "failed to get port %d default ib capabilities (%d). Continuing with caps = 0\n",
2822 port, err);
2823 dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
2824
2825 /* initialize per-slave default ib port capabilities */
2826 if (mlx4_is_master(dev)) {
2827 int i;
2828 for (i = 0; i < dev->num_slaves; i++) {
2829 if (i == mlx4_master_func_num(dev))
2830 continue;
2831 priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
2832 ib_port_default_caps;
2833 }
2834 }
2835
2836 if (mlx4_is_mfunc(dev))
2837 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
2838 else
2839 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
2840
2841 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
2842 dev->caps.pkey_table_len[port] : -1);
2843 if (err) {
2844 mlx4_err(dev, "Failed to set port %d, aborting\n",
2845 port);
2846 goto err_default_countes_free;
2847 }
2848 }
2849 }
2850
2851 return 0;
2852
2853 err_default_countes_free:
2854 mlx4_cleanup_default_counters(dev);
2855
2856 err_counters_table_free:
2857 if (!mlx4_is_slave(dev))
2858 mlx4_cleanup_counters_table(dev);
2859
2860 err_qp_table_free:
2861 mlx4_cleanup_qp_table(dev);
2862
2863 err_srq_table_free:
2864 mlx4_cleanup_srq_table(dev);
2865
2866 err_cq_table_free:
2867 mlx4_cleanup_cq_table(dev);
2868
2869 err_cmd_poll:
2870 mlx4_cmd_use_polling(dev);
2871
2872 err_eq_table_free:
2873 mlx4_cleanup_eq_table(dev);
2874
2875 err_mcg_table_free:
2876 if (!mlx4_is_slave(dev))
2877 mlx4_cleanup_mcg_table(dev);
2878
2879 err_mr_table_free:
2880 mlx4_cleanup_mr_table(dev);
2881
2882 err_xrcd_table_free:
2883 mlx4_cleanup_xrcd_table(dev);
2884
2885 err_pd_table_free:
2886 mlx4_cleanup_pd_table(dev);
2887
2888 err_kar_unmap:
2889 iounmap(priv->kar);
2890
2891 err_uar_free:
2892 mlx4_uar_free(dev, &priv->driver_uar);
2893
2894 err_uar_table_free:
2895 mlx4_cleanup_uar_table(dev);
2896 return err;
2897 }
2898
mlx4_init_affinity_hint(struct mlx4_dev * dev,int port,int eqn)2899 static int mlx4_init_affinity_hint(struct mlx4_dev *dev, int port, int eqn)
2900 {
2901 int requested_cpu = 0;
2902 struct mlx4_priv *priv = mlx4_priv(dev);
2903 struct mlx4_eq *eq;
2904 int off = 0;
2905 int i;
2906
2907 if (eqn > dev->caps.num_comp_vectors)
2908 return -EINVAL;
2909
2910 for (i = 1; i < port; i++)
2911 off += mlx4_get_eqs_per_port(dev, i);
2912
2913 requested_cpu = eqn - off - !!(eqn > MLX4_EQ_ASYNC);
2914
2915 /* Meaning EQs are shared, and this call comes from the second port */
2916 if (requested_cpu < 0)
2917 return 0;
2918
2919 eq = &priv->eq_table.eq[eqn];
2920
2921 if (!zalloc_cpumask_var(&eq->affinity_mask, GFP_KERNEL))
2922 return -ENOMEM;
2923
2924 cpumask_set_cpu(requested_cpu, eq->affinity_mask);
2925
2926 return 0;
2927 }
2928
mlx4_enable_msi_x(struct mlx4_dev * dev)2929 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
2930 {
2931 struct mlx4_priv *priv = mlx4_priv(dev);
2932 struct msix_entry *entries;
2933 int i;
2934 int port = 0;
2935
2936 if (msi_x) {
2937 int nreq = min3(dev->caps.num_ports *
2938 (int)num_online_cpus() + 1,
2939 dev->caps.num_eqs - dev->caps.reserved_eqs,
2940 MAX_MSIX);
2941
2942 if (msi_x > 1)
2943 nreq = min_t(int, nreq, msi_x);
2944
2945 entries = kcalloc(nreq, sizeof(*entries), GFP_KERNEL);
2946 if (!entries)
2947 goto no_msi;
2948
2949 for (i = 0; i < nreq; ++i)
2950 entries[i].entry = i;
2951
2952 nreq = pci_enable_msix_range(dev->persist->pdev, entries, 2,
2953 nreq);
2954
2955 if (nreq < 0 || nreq < MLX4_EQ_ASYNC) {
2956 kfree(entries);
2957 goto no_msi;
2958 }
2959 /* 1 is reserved for events (asyncrounous EQ) */
2960 dev->caps.num_comp_vectors = nreq - 1;
2961
2962 priv->eq_table.eq[MLX4_EQ_ASYNC].irq = entries[0].vector;
2963 bitmap_zero(priv->eq_table.eq[MLX4_EQ_ASYNC].actv_ports.ports,
2964 dev->caps.num_ports);
2965
2966 for (i = 0; i < dev->caps.num_comp_vectors + 1; i++) {
2967 if (i == MLX4_EQ_ASYNC)
2968 continue;
2969
2970 priv->eq_table.eq[i].irq =
2971 entries[i + 1 - !!(i > MLX4_EQ_ASYNC)].vector;
2972
2973 if (MLX4_IS_LEGACY_EQ_MODE(dev->caps)) {
2974 bitmap_fill(priv->eq_table.eq[i].actv_ports.ports,
2975 dev->caps.num_ports);
2976 /* We don't set affinity hint when there
2977 * aren't enough EQs
2978 */
2979 } else {
2980 set_bit(port,
2981 priv->eq_table.eq[i].actv_ports.ports);
2982 if (mlx4_init_affinity_hint(dev, port + 1, i))
2983 mlx4_warn(dev, "Couldn't init hint cpumask for EQ %d\n",
2984 i);
2985 }
2986 /* We divide the Eqs evenly between the two ports.
2987 * (dev->caps.num_comp_vectors / dev->caps.num_ports)
2988 * refers to the number of Eqs per port
2989 * (i.e eqs_per_port). Theoretically, we would like to
2990 * write something like (i + 1) % eqs_per_port == 0.
2991 * However, since there's an asynchronous Eq, we have
2992 * to skip over it by comparing this condition to
2993 * !!((i + 1) > MLX4_EQ_ASYNC).
2994 */
2995 if ((dev->caps.num_comp_vectors > dev->caps.num_ports) &&
2996 ((i + 1) %
2997 (dev->caps.num_comp_vectors / dev->caps.num_ports)) ==
2998 !!((i + 1) > MLX4_EQ_ASYNC))
2999 /* If dev->caps.num_comp_vectors < dev->caps.num_ports,
3000 * everything is shared anyway.
3001 */
3002 port++;
3003 }
3004
3005 dev->flags |= MLX4_FLAG_MSI_X;
3006
3007 kfree(entries);
3008 return;
3009 }
3010
3011 no_msi:
3012 dev->caps.num_comp_vectors = 1;
3013
3014 BUG_ON(MLX4_EQ_ASYNC >= 2);
3015 for (i = 0; i < 2; ++i) {
3016 priv->eq_table.eq[i].irq = dev->persist->pdev->irq;
3017 if (i != MLX4_EQ_ASYNC) {
3018 bitmap_fill(priv->eq_table.eq[i].actv_ports.ports,
3019 dev->caps.num_ports);
3020 }
3021 }
3022 }
3023
mlx4_init_port_info(struct mlx4_dev * dev,int port)3024 static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
3025 {
3026 struct devlink *devlink = priv_to_devlink(mlx4_priv(dev));
3027 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
3028 int err;
3029
3030 err = devlink_port_register(devlink, &info->devlink_port, port);
3031 if (err)
3032 return err;
3033
3034 /* Ethernet and IB drivers will normally set the port type,
3035 * but if they are not built set the type now to prevent
3036 * devlink_port_type_warn() from firing.
3037 */
3038 if (!IS_ENABLED(CONFIG_MLX4_EN) &&
3039 dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
3040 devlink_port_type_eth_set(&info->devlink_port, NULL);
3041 else if (!IS_ENABLED(CONFIG_MLX4_INFINIBAND) &&
3042 dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
3043 devlink_port_type_ib_set(&info->devlink_port, NULL);
3044
3045 info->dev = dev;
3046 info->port = port;
3047 if (!mlx4_is_slave(dev)) {
3048 mlx4_init_mac_table(dev, &info->mac_table);
3049 mlx4_init_vlan_table(dev, &info->vlan_table);
3050 mlx4_init_roce_gid_table(dev, &info->gid_table);
3051 info->base_qpn = mlx4_get_base_qpn(dev, port);
3052 }
3053
3054 sprintf(info->dev_name, "mlx4_port%d", port);
3055 info->port_attr.attr.name = info->dev_name;
3056 if (mlx4_is_mfunc(dev)) {
3057 info->port_attr.attr.mode = 0444;
3058 } else {
3059 info->port_attr.attr.mode = 0644;
3060 info->port_attr.store = set_port_type;
3061 }
3062 info->port_attr.show = show_port_type;
3063 sysfs_attr_init(&info->port_attr.attr);
3064
3065 err = device_create_file(&dev->persist->pdev->dev, &info->port_attr);
3066 if (err) {
3067 mlx4_err(dev, "Failed to create file for port %d\n", port);
3068 devlink_port_unregister(&info->devlink_port);
3069 info->port = -1;
3070 return err;
3071 }
3072
3073 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
3074 info->port_mtu_attr.attr.name = info->dev_mtu_name;
3075 if (mlx4_is_mfunc(dev)) {
3076 info->port_mtu_attr.attr.mode = 0444;
3077 } else {
3078 info->port_mtu_attr.attr.mode = 0644;
3079 info->port_mtu_attr.store = set_port_ib_mtu;
3080 }
3081 info->port_mtu_attr.show = show_port_ib_mtu;
3082 sysfs_attr_init(&info->port_mtu_attr.attr);
3083
3084 err = device_create_file(&dev->persist->pdev->dev,
3085 &info->port_mtu_attr);
3086 if (err) {
3087 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
3088 device_remove_file(&info->dev->persist->pdev->dev,
3089 &info->port_attr);
3090 devlink_port_unregister(&info->devlink_port);
3091 info->port = -1;
3092 return err;
3093 }
3094
3095 return 0;
3096 }
3097
mlx4_cleanup_port_info(struct mlx4_port_info * info)3098 static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
3099 {
3100 if (info->port < 0)
3101 return;
3102
3103 device_remove_file(&info->dev->persist->pdev->dev, &info->port_attr);
3104 device_remove_file(&info->dev->persist->pdev->dev,
3105 &info->port_mtu_attr);
3106 devlink_port_unregister(&info->devlink_port);
3107
3108 #ifdef CONFIG_RFS_ACCEL
3109 free_irq_cpu_rmap(info->rmap);
3110 info->rmap = NULL;
3111 #endif
3112 }
3113
mlx4_init_steering(struct mlx4_dev * dev)3114 static int mlx4_init_steering(struct mlx4_dev *dev)
3115 {
3116 struct mlx4_priv *priv = mlx4_priv(dev);
3117 int num_entries = dev->caps.num_ports;
3118 int i, j;
3119
3120 priv->steer = kcalloc(num_entries, sizeof(struct mlx4_steer),
3121 GFP_KERNEL);
3122 if (!priv->steer)
3123 return -ENOMEM;
3124
3125 for (i = 0; i < num_entries; i++)
3126 for (j = 0; j < MLX4_NUM_STEERS; j++) {
3127 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
3128 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
3129 }
3130 return 0;
3131 }
3132
mlx4_clear_steering(struct mlx4_dev * dev)3133 static void mlx4_clear_steering(struct mlx4_dev *dev)
3134 {
3135 struct mlx4_priv *priv = mlx4_priv(dev);
3136 struct mlx4_steer_index *entry, *tmp_entry;
3137 struct mlx4_promisc_qp *pqp, *tmp_pqp;
3138 int num_entries = dev->caps.num_ports;
3139 int i, j;
3140
3141 for (i = 0; i < num_entries; i++) {
3142 for (j = 0; j < MLX4_NUM_STEERS; j++) {
3143 list_for_each_entry_safe(pqp, tmp_pqp,
3144 &priv->steer[i].promisc_qps[j],
3145 list) {
3146 list_del(&pqp->list);
3147 kfree(pqp);
3148 }
3149 list_for_each_entry_safe(entry, tmp_entry,
3150 &priv->steer[i].steer_entries[j],
3151 list) {
3152 list_del(&entry->list);
3153 list_for_each_entry_safe(pqp, tmp_pqp,
3154 &entry->duplicates,
3155 list) {
3156 list_del(&pqp->list);
3157 kfree(pqp);
3158 }
3159 kfree(entry);
3160 }
3161 }
3162 }
3163 kfree(priv->steer);
3164 }
3165
extended_func_num(struct pci_dev * pdev)3166 static int extended_func_num(struct pci_dev *pdev)
3167 {
3168 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
3169 }
3170
3171 #define MLX4_OWNER_BASE 0x8069c
3172 #define MLX4_OWNER_SIZE 4
3173
mlx4_get_ownership(struct mlx4_dev * dev)3174 static int mlx4_get_ownership(struct mlx4_dev *dev)
3175 {
3176 void __iomem *owner;
3177 u32 ret;
3178
3179 if (pci_channel_offline(dev->persist->pdev))
3180 return -EIO;
3181
3182 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +
3183 MLX4_OWNER_BASE,
3184 MLX4_OWNER_SIZE);
3185 if (!owner) {
3186 mlx4_err(dev, "Failed to obtain ownership bit\n");
3187 return -ENOMEM;
3188 }
3189
3190 ret = readl(owner);
3191 iounmap(owner);
3192 return (int) !!ret;
3193 }
3194
mlx4_free_ownership(struct mlx4_dev * dev)3195 static void mlx4_free_ownership(struct mlx4_dev *dev)
3196 {
3197 void __iomem *owner;
3198
3199 if (pci_channel_offline(dev->persist->pdev))
3200 return;
3201
3202 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +
3203 MLX4_OWNER_BASE,
3204 MLX4_OWNER_SIZE);
3205 if (!owner) {
3206 mlx4_err(dev, "Failed to obtain ownership bit\n");
3207 return;
3208 }
3209 writel(0, owner);
3210 msleep(1000);
3211 iounmap(owner);
3212 }
3213
3214 #define SRIOV_VALID_STATE(flags) (!!((flags) & MLX4_FLAG_SRIOV) ==\
3215 !!((flags) & MLX4_FLAG_MASTER))
3216
mlx4_enable_sriov(struct mlx4_dev * dev,struct pci_dev * pdev,u8 total_vfs,int existing_vfs,int reset_flow)3217 static u64 mlx4_enable_sriov(struct mlx4_dev *dev, struct pci_dev *pdev,
3218 u8 total_vfs, int existing_vfs, int reset_flow)
3219 {
3220 u64 dev_flags = dev->flags;
3221 int err = 0;
3222 int fw_enabled_sriov_vfs = min(pci_sriov_get_totalvfs(pdev),
3223 MLX4_MAX_NUM_VF);
3224
3225 if (reset_flow) {
3226 dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs),
3227 GFP_KERNEL);
3228 if (!dev->dev_vfs)
3229 goto free_mem;
3230 return dev_flags;
3231 }
3232
3233 atomic_inc(&pf_loading);
3234 if (dev->flags & MLX4_FLAG_SRIOV) {
3235 if (existing_vfs != total_vfs) {
3236 mlx4_err(dev, "SR-IOV was already enabled, but with num_vfs (%d) different than requested (%d)\n",
3237 existing_vfs, total_vfs);
3238 total_vfs = existing_vfs;
3239 }
3240 }
3241
3242 dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs), GFP_KERNEL);
3243 if (NULL == dev->dev_vfs) {
3244 mlx4_err(dev, "Failed to allocate memory for VFs\n");
3245 goto disable_sriov;
3246 }
3247
3248 if (!(dev->flags & MLX4_FLAG_SRIOV)) {
3249 if (total_vfs > fw_enabled_sriov_vfs) {
3250 mlx4_err(dev, "requested vfs (%d) > available vfs (%d). Continuing without SR_IOV\n",
3251 total_vfs, fw_enabled_sriov_vfs);
3252 err = -ENOMEM;
3253 goto disable_sriov;
3254 }
3255 mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n", total_vfs);
3256 err = pci_enable_sriov(pdev, total_vfs);
3257 }
3258 if (err) {
3259 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d)\n",
3260 err);
3261 goto disable_sriov;
3262 } else {
3263 mlx4_warn(dev, "Running in master mode\n");
3264 dev_flags |= MLX4_FLAG_SRIOV |
3265 MLX4_FLAG_MASTER;
3266 dev_flags &= ~MLX4_FLAG_SLAVE;
3267 dev->persist->num_vfs = total_vfs;
3268 }
3269 return dev_flags;
3270
3271 disable_sriov:
3272 atomic_dec(&pf_loading);
3273 free_mem:
3274 dev->persist->num_vfs = 0;
3275 kfree(dev->dev_vfs);
3276 dev->dev_vfs = NULL;
3277 return dev_flags & ~MLX4_FLAG_MASTER;
3278 }
3279
3280 enum {
3281 MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64 = -1,
3282 };
3283
mlx4_check_dev_cap(struct mlx4_dev * dev,struct mlx4_dev_cap * dev_cap,int * nvfs)3284 static int mlx4_check_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
3285 int *nvfs)
3286 {
3287 int requested_vfs = nvfs[0] + nvfs[1] + nvfs[2];
3288 /* Checking for 64 VFs as a limitation of CX2 */
3289 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_80_VFS) &&
3290 requested_vfs >= 64) {
3291 mlx4_err(dev, "Requested %d VFs, but FW does not support more than 64\n",
3292 requested_vfs);
3293 return MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64;
3294 }
3295 return 0;
3296 }
3297
mlx4_pci_enable_device(struct mlx4_dev * dev)3298 static int mlx4_pci_enable_device(struct mlx4_dev *dev)
3299 {
3300 struct pci_dev *pdev = dev->persist->pdev;
3301 int err = 0;
3302
3303 mutex_lock(&dev->persist->pci_status_mutex);
3304 if (dev->persist->pci_status == MLX4_PCI_STATUS_DISABLED) {
3305 err = pci_enable_device(pdev);
3306 if (!err)
3307 dev->persist->pci_status = MLX4_PCI_STATUS_ENABLED;
3308 }
3309 mutex_unlock(&dev->persist->pci_status_mutex);
3310
3311 return err;
3312 }
3313
mlx4_pci_disable_device(struct mlx4_dev * dev)3314 static void mlx4_pci_disable_device(struct mlx4_dev *dev)
3315 {
3316 struct pci_dev *pdev = dev->persist->pdev;
3317
3318 mutex_lock(&dev->persist->pci_status_mutex);
3319 if (dev->persist->pci_status == MLX4_PCI_STATUS_ENABLED) {
3320 pci_disable_device(pdev);
3321 dev->persist->pci_status = MLX4_PCI_STATUS_DISABLED;
3322 }
3323 mutex_unlock(&dev->persist->pci_status_mutex);
3324 }
3325
mlx4_load_one(struct pci_dev * pdev,int pci_dev_data,int total_vfs,int * nvfs,struct mlx4_priv * priv,int reset_flow)3326 static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data,
3327 int total_vfs, int *nvfs, struct mlx4_priv *priv,
3328 int reset_flow)
3329 {
3330 struct mlx4_dev *dev;
3331 unsigned sum = 0;
3332 int err;
3333 int port;
3334 int i;
3335 struct mlx4_dev_cap *dev_cap = NULL;
3336 int existing_vfs = 0;
3337
3338 dev = &priv->dev;
3339
3340 INIT_LIST_HEAD(&priv->ctx_list);
3341 spin_lock_init(&priv->ctx_lock);
3342
3343 mutex_init(&priv->port_mutex);
3344 mutex_init(&priv->bond_mutex);
3345
3346 INIT_LIST_HEAD(&priv->pgdir_list);
3347 mutex_init(&priv->pgdir_mutex);
3348 spin_lock_init(&priv->cmd.context_lock);
3349
3350 INIT_LIST_HEAD(&priv->bf_list);
3351 mutex_init(&priv->bf_mutex);
3352
3353 dev->rev_id = pdev->revision;
3354 dev->numa_node = dev_to_node(&pdev->dev);
3355
3356 /* Detect if this device is a virtual function */
3357 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
3358 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
3359 dev->flags |= MLX4_FLAG_SLAVE;
3360 } else {
3361 /* We reset the device and enable SRIOV only for physical
3362 * devices. Try to claim ownership on the device;
3363 * if already taken, skip -- do not allow multiple PFs */
3364 err = mlx4_get_ownership(dev);
3365 if (err) {
3366 if (err < 0)
3367 return err;
3368 else {
3369 mlx4_warn(dev, "Multiple PFs not yet supported - Skipping PF\n");
3370 return -EINVAL;
3371 }
3372 }
3373
3374 atomic_set(&priv->opreq_count, 0);
3375 INIT_WORK(&priv->opreq_task, mlx4_opreq_action);
3376
3377 /*
3378 * Now reset the HCA before we touch the PCI capabilities or
3379 * attempt a firmware command, since a boot ROM may have left
3380 * the HCA in an undefined state.
3381 */
3382 err = mlx4_reset(dev);
3383 if (err) {
3384 mlx4_err(dev, "Failed to reset HCA, aborting\n");
3385 goto err_sriov;
3386 }
3387
3388 if (total_vfs) {
3389 dev->flags = MLX4_FLAG_MASTER;
3390 existing_vfs = pci_num_vf(pdev);
3391 if (existing_vfs)
3392 dev->flags |= MLX4_FLAG_SRIOV;
3393 dev->persist->num_vfs = total_vfs;
3394 }
3395 }
3396
3397 /* on load remove any previous indication of internal error,
3398 * device is up.
3399 */
3400 dev->persist->state = MLX4_DEVICE_STATE_UP;
3401
3402 slave_start:
3403 err = mlx4_cmd_init(dev);
3404 if (err) {
3405 mlx4_err(dev, "Failed to init command interface, aborting\n");
3406 goto err_sriov;
3407 }
3408
3409 /* In slave functions, the communication channel must be initialized
3410 * before posting commands. Also, init num_slaves before calling
3411 * mlx4_init_hca */
3412 if (mlx4_is_mfunc(dev)) {
3413 if (mlx4_is_master(dev)) {
3414 dev->num_slaves = MLX4_MAX_NUM_SLAVES;
3415
3416 } else {
3417 dev->num_slaves = 0;
3418 err = mlx4_multi_func_init(dev);
3419 if (err) {
3420 mlx4_err(dev, "Failed to init slave mfunc interface, aborting\n");
3421 goto err_cmd;
3422 }
3423 }
3424 }
3425
3426 err = mlx4_init_fw(dev);
3427 if (err) {
3428 mlx4_err(dev, "Failed to init fw, aborting.\n");
3429 goto err_mfunc;
3430 }
3431
3432 if (mlx4_is_master(dev)) {
3433 /* when we hit the goto slave_start below, dev_cap already initialized */
3434 if (!dev_cap) {
3435 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL);
3436
3437 if (!dev_cap) {
3438 err = -ENOMEM;
3439 goto err_fw;
3440 }
3441
3442 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
3443 if (err) {
3444 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
3445 goto err_fw;
3446 }
3447
3448 if (mlx4_check_dev_cap(dev, dev_cap, nvfs))
3449 goto err_fw;
3450
3451 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) {
3452 u64 dev_flags = mlx4_enable_sriov(dev, pdev,
3453 total_vfs,
3454 existing_vfs,
3455 reset_flow);
3456
3457 mlx4_close_fw(dev);
3458 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3459 dev->flags = dev_flags;
3460 if (!SRIOV_VALID_STATE(dev->flags)) {
3461 mlx4_err(dev, "Invalid SRIOV state\n");
3462 goto err_sriov;
3463 }
3464 err = mlx4_reset(dev);
3465 if (err) {
3466 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
3467 goto err_sriov;
3468 }
3469 goto slave_start;
3470 }
3471 } else {
3472 /* Legacy mode FW requires SRIOV to be enabled before
3473 * doing QUERY_DEV_CAP, since max_eq's value is different if
3474 * SRIOV is enabled.
3475 */
3476 memset(dev_cap, 0, sizeof(*dev_cap));
3477 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
3478 if (err) {
3479 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
3480 goto err_fw;
3481 }
3482
3483 if (mlx4_check_dev_cap(dev, dev_cap, nvfs))
3484 goto err_fw;
3485 }
3486 }
3487
3488 err = mlx4_init_hca(dev);
3489 if (err) {
3490 if (err == -EACCES) {
3491 /* Not primary Physical function
3492 * Running in slave mode */
3493 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3494 /* We're not a PF */
3495 if (dev->flags & MLX4_FLAG_SRIOV) {
3496 if (!existing_vfs)
3497 pci_disable_sriov(pdev);
3498 if (mlx4_is_master(dev) && !reset_flow)
3499 atomic_dec(&pf_loading);
3500 dev->flags &= ~MLX4_FLAG_SRIOV;
3501 }
3502 if (!mlx4_is_slave(dev))
3503 mlx4_free_ownership(dev);
3504 dev->flags |= MLX4_FLAG_SLAVE;
3505 dev->flags &= ~MLX4_FLAG_MASTER;
3506 goto slave_start;
3507 } else
3508 goto err_fw;
3509 }
3510
3511 if (mlx4_is_master(dev) && (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) {
3512 u64 dev_flags = mlx4_enable_sriov(dev, pdev, total_vfs,
3513 existing_vfs, reset_flow);
3514
3515 if ((dev->flags ^ dev_flags) & (MLX4_FLAG_MASTER | MLX4_FLAG_SLAVE)) {
3516 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_VHCR);
3517 dev->flags = dev_flags;
3518 err = mlx4_cmd_init(dev);
3519 if (err) {
3520 /* Only VHCR is cleaned up, so could still
3521 * send FW commands
3522 */
3523 mlx4_err(dev, "Failed to init VHCR command interface, aborting\n");
3524 goto err_close;
3525 }
3526 } else {
3527 dev->flags = dev_flags;
3528 }
3529
3530 if (!SRIOV_VALID_STATE(dev->flags)) {
3531 mlx4_err(dev, "Invalid SRIOV state\n");
3532 goto err_close;
3533 }
3534 }
3535
3536 /* check if the device is functioning at its maximum possible speed.
3537 * No return code for this call, just warn the user in case of PCI
3538 * express device capabilities are under-satisfied by the bus.
3539 */
3540 if (!mlx4_is_slave(dev))
3541 pcie_print_link_status(dev->persist->pdev);
3542
3543 /* In master functions, the communication channel must be initialized
3544 * after obtaining its address from fw */
3545 if (mlx4_is_master(dev)) {
3546 if (dev->caps.num_ports < 2 &&
3547 num_vfs_argc > 1) {
3548 err = -EINVAL;
3549 mlx4_err(dev,
3550 "Error: Trying to configure VFs on port 2, but HCA has only %d physical ports\n",
3551 dev->caps.num_ports);
3552 goto err_close;
3553 }
3554 memcpy(dev->persist->nvfs, nvfs, sizeof(dev->persist->nvfs));
3555
3556 for (i = 0;
3557 i < sizeof(dev->persist->nvfs)/
3558 sizeof(dev->persist->nvfs[0]); i++) {
3559 unsigned j;
3560
3561 for (j = 0; j < dev->persist->nvfs[i]; ++sum, ++j) {
3562 dev->dev_vfs[sum].min_port = i < 2 ? i + 1 : 1;
3563 dev->dev_vfs[sum].n_ports = i < 2 ? 1 :
3564 dev->caps.num_ports;
3565 }
3566 }
3567
3568 /* In master functions, the communication channel
3569 * must be initialized after obtaining its address from fw
3570 */
3571 err = mlx4_multi_func_init(dev);
3572 if (err) {
3573 mlx4_err(dev, "Failed to init master mfunc interface, aborting.\n");
3574 goto err_close;
3575 }
3576 }
3577
3578 err = mlx4_alloc_eq_table(dev);
3579 if (err)
3580 goto err_master_mfunc;
3581
3582 bitmap_zero(priv->msix_ctl.pool_bm, MAX_MSIX);
3583 mutex_init(&priv->msix_ctl.pool_lock);
3584
3585 mlx4_enable_msi_x(dev);
3586 if ((mlx4_is_mfunc(dev)) &&
3587 !(dev->flags & MLX4_FLAG_MSI_X)) {
3588 err = -EOPNOTSUPP;
3589 mlx4_err(dev, "INTx is not supported in multi-function mode, aborting\n");
3590 goto err_free_eq;
3591 }
3592
3593 if (!mlx4_is_slave(dev)) {
3594 err = mlx4_init_steering(dev);
3595 if (err)
3596 goto err_disable_msix;
3597 }
3598
3599 mlx4_init_quotas(dev);
3600
3601 err = mlx4_setup_hca(dev);
3602 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
3603 !mlx4_is_mfunc(dev)) {
3604 dev->flags &= ~MLX4_FLAG_MSI_X;
3605 dev->caps.num_comp_vectors = 1;
3606 pci_disable_msix(pdev);
3607 err = mlx4_setup_hca(dev);
3608 }
3609
3610 if (err)
3611 goto err_steer;
3612
3613 /* When PF resources are ready arm its comm channel to enable
3614 * getting commands
3615 */
3616 if (mlx4_is_master(dev)) {
3617 err = mlx4_ARM_COMM_CHANNEL(dev);
3618 if (err) {
3619 mlx4_err(dev, " Failed to arm comm channel eq: %x\n",
3620 err);
3621 goto err_steer;
3622 }
3623 }
3624
3625 for (port = 1; port <= dev->caps.num_ports; port++) {
3626 err = mlx4_init_port_info(dev, port);
3627 if (err)
3628 goto err_port;
3629 }
3630
3631 priv->v2p.port1 = 1;
3632 priv->v2p.port2 = 2;
3633
3634 err = mlx4_register_device(dev);
3635 if (err)
3636 goto err_port;
3637
3638 mlx4_request_modules(dev);
3639
3640 mlx4_sense_init(dev);
3641 mlx4_start_sense(dev);
3642
3643 priv->removed = 0;
3644
3645 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow)
3646 atomic_dec(&pf_loading);
3647
3648 kfree(dev_cap);
3649 return 0;
3650
3651 err_port:
3652 for (--port; port >= 1; --port)
3653 mlx4_cleanup_port_info(&priv->port[port]);
3654
3655 mlx4_cleanup_default_counters(dev);
3656 if (!mlx4_is_slave(dev))
3657 mlx4_cleanup_counters_table(dev);
3658 mlx4_cleanup_qp_table(dev);
3659 mlx4_cleanup_srq_table(dev);
3660 mlx4_cleanup_cq_table(dev);
3661 mlx4_cmd_use_polling(dev);
3662 mlx4_cleanup_eq_table(dev);
3663 mlx4_cleanup_mcg_table(dev);
3664 mlx4_cleanup_mr_table(dev);
3665 mlx4_cleanup_xrcd_table(dev);
3666 mlx4_cleanup_pd_table(dev);
3667 mlx4_cleanup_uar_table(dev);
3668
3669 err_steer:
3670 if (!mlx4_is_slave(dev))
3671 mlx4_clear_steering(dev);
3672
3673 err_disable_msix:
3674 if (dev->flags & MLX4_FLAG_MSI_X)
3675 pci_disable_msix(pdev);
3676
3677 err_free_eq:
3678 mlx4_free_eq_table(dev);
3679
3680 err_master_mfunc:
3681 if (mlx4_is_master(dev)) {
3682 mlx4_free_resource_tracker(dev, RES_TR_FREE_STRUCTS_ONLY);
3683 mlx4_multi_func_cleanup(dev);
3684 }
3685
3686 if (mlx4_is_slave(dev))
3687 mlx4_slave_destroy_special_qp_cap(dev);
3688
3689 err_close:
3690 mlx4_close_hca(dev);
3691
3692 err_fw:
3693 mlx4_close_fw(dev);
3694
3695 err_mfunc:
3696 if (mlx4_is_slave(dev))
3697 mlx4_multi_func_cleanup(dev);
3698
3699 err_cmd:
3700 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3701
3702 err_sriov:
3703 if (dev->flags & MLX4_FLAG_SRIOV && !existing_vfs) {
3704 pci_disable_sriov(pdev);
3705 dev->flags &= ~MLX4_FLAG_SRIOV;
3706 }
3707
3708 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow)
3709 atomic_dec(&pf_loading);
3710
3711 kfree(priv->dev.dev_vfs);
3712
3713 if (!mlx4_is_slave(dev))
3714 mlx4_free_ownership(dev);
3715
3716 kfree(dev_cap);
3717 return err;
3718 }
3719
__mlx4_init_one(struct pci_dev * pdev,int pci_dev_data,struct mlx4_priv * priv)3720 static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data,
3721 struct mlx4_priv *priv)
3722 {
3723 int err;
3724 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3725 int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3726 const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = {
3727 {2, 0, 0}, {0, 1, 2}, {0, 1, 2} };
3728 unsigned total_vfs = 0;
3729 unsigned int i;
3730
3731 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
3732
3733 err = mlx4_pci_enable_device(&priv->dev);
3734 if (err) {
3735 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
3736 return err;
3737 }
3738
3739 /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS
3740 * per port, we must limit the number of VFs to 63 (since their are
3741 * 128 MACs)
3742 */
3743 for (i = 0; i < ARRAY_SIZE(nvfs) && i < num_vfs_argc;
3744 total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) {
3745 nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i];
3746 if (nvfs[i] < 0) {
3747 dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n");
3748 err = -EINVAL;
3749 goto err_disable_pdev;
3750 }
3751 }
3752 for (i = 0; i < ARRAY_SIZE(prb_vf) && i < probe_vfs_argc;
3753 i++) {
3754 prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i];
3755 if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) {
3756 dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n");
3757 err = -EINVAL;
3758 goto err_disable_pdev;
3759 }
3760 }
3761 if (total_vfs > MLX4_MAX_NUM_VF) {
3762 dev_err(&pdev->dev,
3763 "Requested more VF's (%d) than allowed by hw (%d)\n",
3764 total_vfs, MLX4_MAX_NUM_VF);
3765 err = -EINVAL;
3766 goto err_disable_pdev;
3767 }
3768
3769 for (i = 0; i < MLX4_MAX_PORTS; i++) {
3770 if (nvfs[i] + nvfs[2] > MLX4_MAX_NUM_VF_P_PORT) {
3771 dev_err(&pdev->dev,
3772 "Requested more VF's (%d) for port (%d) than allowed by driver (%d)\n",
3773 nvfs[i] + nvfs[2], i + 1,
3774 MLX4_MAX_NUM_VF_P_PORT);
3775 err = -EINVAL;
3776 goto err_disable_pdev;
3777 }
3778 }
3779
3780 /* Check for BARs. */
3781 if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) &&
3782 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
3783 dev_err(&pdev->dev, "Missing DCS, aborting (driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n",
3784 pci_dev_data, pci_resource_flags(pdev, 0));
3785 err = -ENODEV;
3786 goto err_disable_pdev;
3787 }
3788 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
3789 dev_err(&pdev->dev, "Missing UAR, aborting\n");
3790 err = -ENODEV;
3791 goto err_disable_pdev;
3792 }
3793
3794 err = pci_request_regions(pdev, DRV_NAME);
3795 if (err) {
3796 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
3797 goto err_disable_pdev;
3798 }
3799
3800 pci_set_master(pdev);
3801
3802 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
3803 if (err) {
3804 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
3805 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3806 if (err) {
3807 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
3808 goto err_release_regions;
3809 }
3810 }
3811 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
3812 if (err) {
3813 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
3814 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3815 if (err) {
3816 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, aborting\n");
3817 goto err_release_regions;
3818 }
3819 }
3820
3821 /* Allow large DMA segments, up to the firmware limit of 1 GB */
3822 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
3823 /* Detect if this device is a virtual function */
3824 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
3825 /* When acting as pf, we normally skip vfs unless explicitly
3826 * requested to probe them.
3827 */
3828 if (total_vfs) {
3829 unsigned vfs_offset = 0;
3830
3831 for (i = 0; i < ARRAY_SIZE(nvfs) &&
3832 vfs_offset + nvfs[i] < extended_func_num(pdev);
3833 vfs_offset += nvfs[i], i++)
3834 ;
3835 if (i == ARRAY_SIZE(nvfs)) {
3836 err = -ENODEV;
3837 goto err_release_regions;
3838 }
3839 if ((extended_func_num(pdev) - vfs_offset)
3840 > prb_vf[i]) {
3841 dev_warn(&pdev->dev, "Skipping virtual function:%d\n",
3842 extended_func_num(pdev));
3843 err = -ENODEV;
3844 goto err_release_regions;
3845 }
3846 }
3847 }
3848
3849 err = mlx4_crdump_init(&priv->dev);
3850 if (err)
3851 goto err_release_regions;
3852
3853 err = mlx4_catas_init(&priv->dev);
3854 if (err)
3855 goto err_crdump;
3856
3857 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 0);
3858 if (err)
3859 goto err_catas;
3860
3861 return 0;
3862
3863 err_catas:
3864 mlx4_catas_end(&priv->dev);
3865
3866 err_crdump:
3867 mlx4_crdump_end(&priv->dev);
3868
3869 err_release_regions:
3870 pci_release_regions(pdev);
3871
3872 err_disable_pdev:
3873 mlx4_pci_disable_device(&priv->dev);
3874 return err;
3875 }
3876
mlx4_devlink_port_type_set(struct devlink_port * devlink_port,enum devlink_port_type port_type)3877 static int mlx4_devlink_port_type_set(struct devlink_port *devlink_port,
3878 enum devlink_port_type port_type)
3879 {
3880 struct mlx4_port_info *info = container_of(devlink_port,
3881 struct mlx4_port_info,
3882 devlink_port);
3883 enum mlx4_port_type mlx4_port_type;
3884
3885 switch (port_type) {
3886 case DEVLINK_PORT_TYPE_AUTO:
3887 mlx4_port_type = MLX4_PORT_TYPE_AUTO;
3888 break;
3889 case DEVLINK_PORT_TYPE_ETH:
3890 mlx4_port_type = MLX4_PORT_TYPE_ETH;
3891 break;
3892 case DEVLINK_PORT_TYPE_IB:
3893 mlx4_port_type = MLX4_PORT_TYPE_IB;
3894 break;
3895 default:
3896 return -EOPNOTSUPP;
3897 }
3898
3899 return __set_port_type(info, mlx4_port_type);
3900 }
3901
mlx4_devlink_param_load_driverinit_values(struct devlink * devlink)3902 static void mlx4_devlink_param_load_driverinit_values(struct devlink *devlink)
3903 {
3904 struct mlx4_priv *priv = devlink_priv(devlink);
3905 struct mlx4_dev *dev = &priv->dev;
3906 struct mlx4_fw_crdump *crdump = &dev->persist->crdump;
3907 union devlink_param_value saved_value;
3908 int err;
3909
3910 err = devlink_param_driverinit_value_get(devlink,
3911 DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
3912 &saved_value);
3913 if (!err && mlx4_internal_err_reset != saved_value.vbool) {
3914 mlx4_internal_err_reset = saved_value.vbool;
3915 /* Notify on value changed on runtime configuration mode */
3916 devlink_param_value_changed(devlink,
3917 DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET);
3918 }
3919 err = devlink_param_driverinit_value_get(devlink,
3920 DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
3921 &saved_value);
3922 if (!err)
3923 log_num_mac = order_base_2(saved_value.vu32);
3924 err = devlink_param_driverinit_value_get(devlink,
3925 MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE,
3926 &saved_value);
3927 if (!err)
3928 enable_64b_cqe_eqe = saved_value.vbool;
3929 err = devlink_param_driverinit_value_get(devlink,
3930 MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR,
3931 &saved_value);
3932 if (!err)
3933 enable_4k_uar = saved_value.vbool;
3934 err = devlink_param_driverinit_value_get(devlink,
3935 DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
3936 &saved_value);
3937 if (!err && crdump->snapshot_enable != saved_value.vbool) {
3938 crdump->snapshot_enable = saved_value.vbool;
3939 devlink_param_value_changed(devlink,
3940 DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT);
3941 }
3942 }
3943
3944 static void mlx4_restart_one_down(struct pci_dev *pdev);
3945 static int mlx4_restart_one_up(struct pci_dev *pdev, bool reload,
3946 struct devlink *devlink);
3947
mlx4_devlink_reload_down(struct devlink * devlink,bool netns_change,enum devlink_reload_action action,enum devlink_reload_limit limit,struct netlink_ext_ack * extack)3948 static int mlx4_devlink_reload_down(struct devlink *devlink, bool netns_change,
3949 enum devlink_reload_action action,
3950 enum devlink_reload_limit limit,
3951 struct netlink_ext_ack *extack)
3952 {
3953 struct mlx4_priv *priv = devlink_priv(devlink);
3954 struct mlx4_dev *dev = &priv->dev;
3955 struct mlx4_dev_persistent *persist = dev->persist;
3956
3957 if (netns_change) {
3958 NL_SET_ERR_MSG_MOD(extack, "Namespace change is not supported");
3959 return -EOPNOTSUPP;
3960 }
3961 if (persist->num_vfs)
3962 mlx4_warn(persist->dev, "Reload performed on PF, will cause reset on operating Virtual Functions\n");
3963 mlx4_restart_one_down(persist->pdev);
3964 return 0;
3965 }
3966
mlx4_devlink_reload_up(struct devlink * devlink,enum devlink_reload_action action,enum devlink_reload_limit limit,u32 * actions_performed,struct netlink_ext_ack * extack)3967 static int mlx4_devlink_reload_up(struct devlink *devlink, enum devlink_reload_action action,
3968 enum devlink_reload_limit limit, u32 *actions_performed,
3969 struct netlink_ext_ack *extack)
3970 {
3971 struct mlx4_priv *priv = devlink_priv(devlink);
3972 struct mlx4_dev *dev = &priv->dev;
3973 struct mlx4_dev_persistent *persist = dev->persist;
3974 int err;
3975
3976 *actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT);
3977 err = mlx4_restart_one_up(persist->pdev, true, devlink);
3978 if (err)
3979 mlx4_err(persist->dev, "mlx4_restart_one_up failed, ret=%d\n",
3980 err);
3981
3982 return err;
3983 }
3984
3985 static const struct devlink_ops mlx4_devlink_ops = {
3986 .port_type_set = mlx4_devlink_port_type_set,
3987 .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT),
3988 .reload_down = mlx4_devlink_reload_down,
3989 .reload_up = mlx4_devlink_reload_up,
3990 };
3991
mlx4_init_one(struct pci_dev * pdev,const struct pci_device_id * id)3992 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
3993 {
3994 struct devlink *devlink;
3995 struct mlx4_priv *priv;
3996 struct mlx4_dev *dev;
3997 int ret;
3998
3999 printk_once(KERN_INFO "%s", mlx4_version);
4000
4001 devlink = devlink_alloc(&mlx4_devlink_ops, sizeof(*priv));
4002 if (!devlink)
4003 return -ENOMEM;
4004 priv = devlink_priv(devlink);
4005
4006 dev = &priv->dev;
4007 dev->persist = kzalloc(sizeof(*dev->persist), GFP_KERNEL);
4008 if (!dev->persist) {
4009 ret = -ENOMEM;
4010 goto err_devlink_free;
4011 }
4012 dev->persist->pdev = pdev;
4013 dev->persist->dev = dev;
4014 pci_set_drvdata(pdev, dev->persist);
4015 priv->pci_dev_data = id->driver_data;
4016 mutex_init(&dev->persist->device_state_mutex);
4017 mutex_init(&dev->persist->interface_state_mutex);
4018 mutex_init(&dev->persist->pci_status_mutex);
4019
4020 ret = devlink_register(devlink, &pdev->dev);
4021 if (ret)
4022 goto err_persist_free;
4023 ret = devlink_params_register(devlink, mlx4_devlink_params,
4024 ARRAY_SIZE(mlx4_devlink_params));
4025 if (ret)
4026 goto err_devlink_unregister;
4027 mlx4_devlink_set_params_init_values(devlink);
4028 ret = __mlx4_init_one(pdev, id->driver_data, priv);
4029 if (ret)
4030 goto err_params_unregister;
4031
4032 devlink_params_publish(devlink);
4033 devlink_reload_enable(devlink);
4034 pci_save_state(pdev);
4035 return 0;
4036
4037 err_params_unregister:
4038 devlink_params_unregister(devlink, mlx4_devlink_params,
4039 ARRAY_SIZE(mlx4_devlink_params));
4040 err_devlink_unregister:
4041 devlink_unregister(devlink);
4042 err_persist_free:
4043 kfree(dev->persist);
4044 err_devlink_free:
4045 devlink_free(devlink);
4046 return ret;
4047 }
4048
mlx4_clean_dev(struct mlx4_dev * dev)4049 static void mlx4_clean_dev(struct mlx4_dev *dev)
4050 {
4051 struct mlx4_dev_persistent *persist = dev->persist;
4052 struct mlx4_priv *priv = mlx4_priv(dev);
4053 unsigned long flags = (dev->flags & RESET_PERSIST_MASK_FLAGS);
4054
4055 memset(priv, 0, sizeof(*priv));
4056 priv->dev.persist = persist;
4057 priv->dev.flags = flags;
4058 }
4059
mlx4_unload_one(struct pci_dev * pdev)4060 static void mlx4_unload_one(struct pci_dev *pdev)
4061 {
4062 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4063 struct mlx4_dev *dev = persist->dev;
4064 struct mlx4_priv *priv = mlx4_priv(dev);
4065 int pci_dev_data;
4066 int p, i;
4067
4068 if (priv->removed)
4069 return;
4070
4071 /* saving current ports type for further use */
4072 for (i = 0; i < dev->caps.num_ports; i++) {
4073 dev->persist->curr_port_type[i] = dev->caps.port_type[i + 1];
4074 dev->persist->curr_port_poss_type[i] = dev->caps.
4075 possible_type[i + 1];
4076 }
4077
4078 pci_dev_data = priv->pci_dev_data;
4079
4080 mlx4_stop_sense(dev);
4081 mlx4_unregister_device(dev);
4082
4083 for (p = 1; p <= dev->caps.num_ports; p++) {
4084 mlx4_cleanup_port_info(&priv->port[p]);
4085 mlx4_CLOSE_PORT(dev, p);
4086 }
4087
4088 if (mlx4_is_master(dev))
4089 mlx4_free_resource_tracker(dev,
4090 RES_TR_FREE_SLAVES_ONLY);
4091
4092 mlx4_cleanup_default_counters(dev);
4093 if (!mlx4_is_slave(dev))
4094 mlx4_cleanup_counters_table(dev);
4095 mlx4_cleanup_qp_table(dev);
4096 mlx4_cleanup_srq_table(dev);
4097 mlx4_cleanup_cq_table(dev);
4098 mlx4_cmd_use_polling(dev);
4099 mlx4_cleanup_eq_table(dev);
4100 mlx4_cleanup_mcg_table(dev);
4101 mlx4_cleanup_mr_table(dev);
4102 mlx4_cleanup_xrcd_table(dev);
4103 mlx4_cleanup_pd_table(dev);
4104
4105 if (mlx4_is_master(dev))
4106 mlx4_free_resource_tracker(dev,
4107 RES_TR_FREE_STRUCTS_ONLY);
4108
4109 iounmap(priv->kar);
4110 mlx4_uar_free(dev, &priv->driver_uar);
4111 mlx4_cleanup_uar_table(dev);
4112 if (!mlx4_is_slave(dev))
4113 mlx4_clear_steering(dev);
4114 mlx4_free_eq_table(dev);
4115 if (mlx4_is_master(dev))
4116 mlx4_multi_func_cleanup(dev);
4117 mlx4_close_hca(dev);
4118 mlx4_close_fw(dev);
4119 if (mlx4_is_slave(dev))
4120 mlx4_multi_func_cleanup(dev);
4121 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
4122
4123 if (dev->flags & MLX4_FLAG_MSI_X)
4124 pci_disable_msix(pdev);
4125
4126 if (!mlx4_is_slave(dev))
4127 mlx4_free_ownership(dev);
4128
4129 mlx4_slave_destroy_special_qp_cap(dev);
4130 kfree(dev->dev_vfs);
4131
4132 mlx4_clean_dev(dev);
4133 priv->pci_dev_data = pci_dev_data;
4134 priv->removed = 1;
4135 }
4136
mlx4_remove_one(struct pci_dev * pdev)4137 static void mlx4_remove_one(struct pci_dev *pdev)
4138 {
4139 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4140 struct mlx4_dev *dev = persist->dev;
4141 struct mlx4_priv *priv = mlx4_priv(dev);
4142 struct devlink *devlink = priv_to_devlink(priv);
4143 int active_vfs = 0;
4144
4145 devlink_reload_disable(devlink);
4146
4147 if (mlx4_is_slave(dev))
4148 persist->interface_state |= MLX4_INTERFACE_STATE_NOWAIT;
4149
4150 mutex_lock(&persist->interface_state_mutex);
4151 persist->interface_state |= MLX4_INTERFACE_STATE_DELETION;
4152 mutex_unlock(&persist->interface_state_mutex);
4153
4154 /* Disabling SR-IOV is not allowed while there are active vf's */
4155 if (mlx4_is_master(dev) && dev->flags & MLX4_FLAG_SRIOV) {
4156 active_vfs = mlx4_how_many_lives_vf(dev);
4157 if (active_vfs) {
4158 pr_warn("Removing PF when there are active VF's !!\n");
4159 pr_warn("Will not disable SR-IOV.\n");
4160 }
4161 }
4162
4163 /* device marked to be under deletion running now without the lock
4164 * letting other tasks to be terminated
4165 */
4166 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
4167 mlx4_unload_one(pdev);
4168 else
4169 mlx4_info(dev, "%s: interface is down\n", __func__);
4170 mlx4_catas_end(dev);
4171 mlx4_crdump_end(dev);
4172 if (dev->flags & MLX4_FLAG_SRIOV && !active_vfs) {
4173 mlx4_warn(dev, "Disabling SR-IOV\n");
4174 pci_disable_sriov(pdev);
4175 }
4176
4177 pci_release_regions(pdev);
4178 mlx4_pci_disable_device(dev);
4179 devlink_params_unregister(devlink, mlx4_devlink_params,
4180 ARRAY_SIZE(mlx4_devlink_params));
4181 devlink_unregister(devlink);
4182 kfree(dev->persist);
4183 devlink_free(devlink);
4184 }
4185
restore_current_port_types(struct mlx4_dev * dev,enum mlx4_port_type * types,enum mlx4_port_type * poss_types)4186 static int restore_current_port_types(struct mlx4_dev *dev,
4187 enum mlx4_port_type *types,
4188 enum mlx4_port_type *poss_types)
4189 {
4190 struct mlx4_priv *priv = mlx4_priv(dev);
4191 int err, i;
4192
4193 mlx4_stop_sense(dev);
4194
4195 mutex_lock(&priv->port_mutex);
4196 for (i = 0; i < dev->caps.num_ports; i++)
4197 dev->caps.possible_type[i + 1] = poss_types[i];
4198 err = mlx4_change_port_types(dev, types);
4199 mlx4_start_sense(dev);
4200 mutex_unlock(&priv->port_mutex);
4201
4202 return err;
4203 }
4204
mlx4_restart_one_down(struct pci_dev * pdev)4205 static void mlx4_restart_one_down(struct pci_dev *pdev)
4206 {
4207 mlx4_unload_one(pdev);
4208 }
4209
mlx4_restart_one_up(struct pci_dev * pdev,bool reload,struct devlink * devlink)4210 static int mlx4_restart_one_up(struct pci_dev *pdev, bool reload,
4211 struct devlink *devlink)
4212 {
4213 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4214 struct mlx4_dev *dev = persist->dev;
4215 struct mlx4_priv *priv = mlx4_priv(dev);
4216 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
4217 int pci_dev_data, err, total_vfs;
4218
4219 pci_dev_data = priv->pci_dev_data;
4220 total_vfs = dev->persist->num_vfs;
4221 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
4222
4223 if (reload)
4224 mlx4_devlink_param_load_driverinit_values(devlink);
4225 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 1);
4226 if (err) {
4227 mlx4_err(dev, "%s: ERROR: mlx4_load_one failed, pci_name=%s, err=%d\n",
4228 __func__, pci_name(pdev), err);
4229 return err;
4230 }
4231
4232 err = restore_current_port_types(dev, dev->persist->curr_port_type,
4233 dev->persist->curr_port_poss_type);
4234 if (err)
4235 mlx4_err(dev, "could not restore original port types (%d)\n",
4236 err);
4237
4238 return err;
4239 }
4240
mlx4_restart_one(struct pci_dev * pdev)4241 int mlx4_restart_one(struct pci_dev *pdev)
4242 {
4243 mlx4_restart_one_down(pdev);
4244 return mlx4_restart_one_up(pdev, false, NULL);
4245 }
4246
4247 #define MLX_SP(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_FORCE_SENSE_PORT }
4248 #define MLX_VF(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_IS_VF }
4249 #define MLX_GN(id) { PCI_VDEVICE(MELLANOX, id), 0 }
4250
4251 static const struct pci_device_id mlx4_pci_table[] = {
4252 #ifdef CONFIG_MLX4_CORE_GEN2
4253 /* MT25408 "Hermon" */
4254 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_SDR), /* SDR */
4255 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_DDR), /* DDR */
4256 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_QDR), /* QDR */
4257 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2), /* DDR Gen2 */
4258 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2), /* QDR Gen2 */
4259 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_EN), /* EN 10GigE */
4260 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2), /* EN 10GigE Gen2 */
4261 /* MT25458 ConnectX EN 10GBASE-T */
4262 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN),
4263 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2), /* Gen2 */
4264 /* MT26468 ConnectX EN 10GigE PCIe Gen2*/
4265 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2),
4266 /* MT26438 ConnectX EN 40GigE PCIe Gen2 5GT/s */
4267 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2),
4268 /* MT26478 ConnectX2 40GigE PCIe Gen2 */
4269 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX2),
4270 /* MT25400 Family [ConnectX-2] */
4271 MLX_VF(0x1002), /* Virtual Function */
4272 #endif /* CONFIG_MLX4_CORE_GEN2 */
4273 /* MT27500 Family [ConnectX-3] */
4274 MLX_GN(PCI_DEVICE_ID_MELLANOX_CONNECTX3),
4275 MLX_VF(0x1004), /* Virtual Function */
4276 MLX_GN(0x1005), /* MT27510 Family */
4277 MLX_GN(0x1006), /* MT27511 Family */
4278 MLX_GN(PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO), /* MT27520 Family */
4279 MLX_GN(0x1008), /* MT27521 Family */
4280 MLX_GN(0x1009), /* MT27530 Family */
4281 MLX_GN(0x100a), /* MT27531 Family */
4282 MLX_GN(0x100b), /* MT27540 Family */
4283 MLX_GN(0x100c), /* MT27541 Family */
4284 MLX_GN(0x100d), /* MT27550 Family */
4285 MLX_GN(0x100e), /* MT27551 Family */
4286 MLX_GN(0x100f), /* MT27560 Family */
4287 MLX_GN(0x1010), /* MT27561 Family */
4288
4289 /*
4290 * See the mellanox_check_broken_intx_masking() quirk when
4291 * adding devices
4292 */
4293
4294 { 0, }
4295 };
4296
4297 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
4298
mlx4_pci_err_detected(struct pci_dev * pdev,pci_channel_state_t state)4299 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
4300 pci_channel_state_t state)
4301 {
4302 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4303
4304 mlx4_err(persist->dev, "mlx4_pci_err_detected was called\n");
4305 mlx4_enter_error_state(persist);
4306
4307 mutex_lock(&persist->interface_state_mutex);
4308 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
4309 mlx4_unload_one(pdev);
4310
4311 mutex_unlock(&persist->interface_state_mutex);
4312 if (state == pci_channel_io_perm_failure)
4313 return PCI_ERS_RESULT_DISCONNECT;
4314
4315 mlx4_pci_disable_device(persist->dev);
4316 return PCI_ERS_RESULT_NEED_RESET;
4317 }
4318
mlx4_pci_slot_reset(struct pci_dev * pdev)4319 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
4320 {
4321 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4322 struct mlx4_dev *dev = persist->dev;
4323 int err;
4324
4325 mlx4_err(dev, "mlx4_pci_slot_reset was called\n");
4326 err = mlx4_pci_enable_device(dev);
4327 if (err) {
4328 mlx4_err(dev, "Can not re-enable device, err=%d\n", err);
4329 return PCI_ERS_RESULT_DISCONNECT;
4330 }
4331
4332 pci_set_master(pdev);
4333 pci_restore_state(pdev);
4334 pci_save_state(pdev);
4335 return PCI_ERS_RESULT_RECOVERED;
4336 }
4337
mlx4_pci_resume(struct pci_dev * pdev)4338 static void mlx4_pci_resume(struct pci_dev *pdev)
4339 {
4340 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4341 struct mlx4_dev *dev = persist->dev;
4342 struct mlx4_priv *priv = mlx4_priv(dev);
4343 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
4344 int total_vfs;
4345 int err;
4346
4347 mlx4_err(dev, "%s was called\n", __func__);
4348 total_vfs = dev->persist->num_vfs;
4349 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
4350
4351 mutex_lock(&persist->interface_state_mutex);
4352 if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) {
4353 err = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, nvfs,
4354 priv, 1);
4355 if (err) {
4356 mlx4_err(dev, "%s: mlx4_load_one failed, err=%d\n",
4357 __func__, err);
4358 goto end;
4359 }
4360
4361 err = restore_current_port_types(dev, dev->persist->
4362 curr_port_type, dev->persist->
4363 curr_port_poss_type);
4364 if (err)
4365 mlx4_err(dev, "could not restore original port types (%d)\n", err);
4366 }
4367 end:
4368 mutex_unlock(&persist->interface_state_mutex);
4369
4370 }
4371
mlx4_shutdown(struct pci_dev * pdev)4372 static void mlx4_shutdown(struct pci_dev *pdev)
4373 {
4374 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4375 struct mlx4_dev *dev = persist->dev;
4376
4377 mlx4_info(persist->dev, "mlx4_shutdown was called\n");
4378 mutex_lock(&persist->interface_state_mutex);
4379 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
4380 mlx4_unload_one(pdev);
4381 mutex_unlock(&persist->interface_state_mutex);
4382 mlx4_pci_disable_device(dev);
4383 }
4384
4385 static const struct pci_error_handlers mlx4_err_handler = {
4386 .error_detected = mlx4_pci_err_detected,
4387 .slot_reset = mlx4_pci_slot_reset,
4388 .resume = mlx4_pci_resume,
4389 };
4390
mlx4_suspend(struct device * dev_d)4391 static int __maybe_unused mlx4_suspend(struct device *dev_d)
4392 {
4393 struct pci_dev *pdev = to_pci_dev(dev_d);
4394 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4395 struct mlx4_dev *dev = persist->dev;
4396
4397 mlx4_err(dev, "suspend was called\n");
4398 mutex_lock(&persist->interface_state_mutex);
4399 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
4400 mlx4_unload_one(pdev);
4401 mutex_unlock(&persist->interface_state_mutex);
4402
4403 return 0;
4404 }
4405
mlx4_resume(struct device * dev_d)4406 static int __maybe_unused mlx4_resume(struct device *dev_d)
4407 {
4408 struct pci_dev *pdev = to_pci_dev(dev_d);
4409 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4410 struct mlx4_dev *dev = persist->dev;
4411 struct mlx4_priv *priv = mlx4_priv(dev);
4412 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
4413 int total_vfs;
4414 int ret = 0;
4415
4416 mlx4_err(dev, "resume was called\n");
4417 total_vfs = dev->persist->num_vfs;
4418 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
4419
4420 mutex_lock(&persist->interface_state_mutex);
4421 if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) {
4422 ret = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs,
4423 nvfs, priv, 1);
4424 if (!ret) {
4425 ret = restore_current_port_types(dev,
4426 dev->persist->curr_port_type,
4427 dev->persist->curr_port_poss_type);
4428 if (ret)
4429 mlx4_err(dev, "resume: could not restore original port types (%d)\n", ret);
4430 }
4431 }
4432 mutex_unlock(&persist->interface_state_mutex);
4433
4434 return ret;
4435 }
4436
4437 static SIMPLE_DEV_PM_OPS(mlx4_pm_ops, mlx4_suspend, mlx4_resume);
4438
4439 static struct pci_driver mlx4_driver = {
4440 .name = DRV_NAME,
4441 .id_table = mlx4_pci_table,
4442 .probe = mlx4_init_one,
4443 .shutdown = mlx4_shutdown,
4444 .remove = mlx4_remove_one,
4445 .driver.pm = &mlx4_pm_ops,
4446 .err_handler = &mlx4_err_handler,
4447 };
4448
mlx4_verify_params(void)4449 static int __init mlx4_verify_params(void)
4450 {
4451 if (msi_x < 0) {
4452 pr_warn("mlx4_core: bad msi_x: %d\n", msi_x);
4453 return -1;
4454 }
4455
4456 if ((log_num_mac < 0) || (log_num_mac > 7)) {
4457 pr_warn("mlx4_core: bad num_mac: %d\n", log_num_mac);
4458 return -1;
4459 }
4460
4461 if (log_num_vlan != 0)
4462 pr_warn("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
4463 MLX4_LOG_NUM_VLANS);
4464
4465 if (use_prio != 0)
4466 pr_warn("mlx4_core: use_prio - obsolete module param, ignored\n");
4467
4468 if ((log_mtts_per_seg < 0) || (log_mtts_per_seg > 7)) {
4469 pr_warn("mlx4_core: bad log_mtts_per_seg: %d\n",
4470 log_mtts_per_seg);
4471 return -1;
4472 }
4473
4474 /* Check if module param for ports type has legal combination */
4475 if (port_type_array[0] == false && port_type_array[1] == true) {
4476 pr_warn("Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
4477 port_type_array[0] = true;
4478 }
4479
4480 if (mlx4_log_num_mgm_entry_size < -7 ||
4481 (mlx4_log_num_mgm_entry_size > 0 &&
4482 (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE ||
4483 mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE))) {
4484 pr_warn("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not in legal range (-7..0 or %d..%d)\n",
4485 mlx4_log_num_mgm_entry_size,
4486 MLX4_MIN_MGM_LOG_ENTRY_SIZE,
4487 MLX4_MAX_MGM_LOG_ENTRY_SIZE);
4488 return -1;
4489 }
4490
4491 return 0;
4492 }
4493
mlx4_init(void)4494 static int __init mlx4_init(void)
4495 {
4496 int ret;
4497
4498 if (mlx4_verify_params())
4499 return -EINVAL;
4500
4501
4502 mlx4_wq = create_singlethread_workqueue("mlx4");
4503 if (!mlx4_wq)
4504 return -ENOMEM;
4505
4506 ret = pci_register_driver(&mlx4_driver);
4507 if (ret < 0)
4508 destroy_workqueue(mlx4_wq);
4509 return ret < 0 ? ret : 0;
4510 }
4511
mlx4_cleanup(void)4512 static void __exit mlx4_cleanup(void)
4513 {
4514 pci_unregister_driver(&mlx4_driver);
4515 destroy_workqueue(mlx4_wq);
4516 }
4517
4518 module_init(mlx4_init);
4519 module_exit(mlx4_cleanup);
4520
