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