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net/mlx4_core: Demote simple multicast and broadcast flow steering rules
[deliverable/linux.git] / drivers / net / ethernet / mellanox / mlx4 / main.c
1 /*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
5 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36 #include <linux/module.h>
37 #include <linux/init.h>
38 #include <linux/errno.h>
39 #include <linux/pci.h>
40 #include <linux/dma-mapping.h>
41 #include <linux/slab.h>
42 #include <linux/io-mapping.h>
43 #include <linux/delay.h>
44 #include <linux/kmod.h>
45
46 #include <linux/mlx4/device.h>
47 #include <linux/mlx4/doorbell.h>
48
49 #include "mlx4.h"
50 #include "fw.h"
51 #include "icm.h"
52
53 MODULE_AUTHOR("Roland Dreier");
54 MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver");
55 MODULE_LICENSE("Dual BSD/GPL");
56 MODULE_VERSION(DRV_VERSION);
57
58 struct workqueue_struct *mlx4_wq;
59
60 #ifdef CONFIG_MLX4_DEBUG
61
62 int mlx4_debug_level = 0;
63 module_param_named(debug_level, mlx4_debug_level, int, 0644);
64 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
65
66 #endif /* CONFIG_MLX4_DEBUG */
67
68 #ifdef CONFIG_PCI_MSI
69
70 static int msi_x = 1;
71 module_param(msi_x, int, 0444);
72 MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
73
74 #else /* CONFIG_PCI_MSI */
75
76 #define msi_x (0)
77
78 #endif /* CONFIG_PCI_MSI */
79
80 static uint8_t num_vfs[3] = {0, 0, 0};
81 static int num_vfs_argc;
82 module_param_array(num_vfs, byte , &num_vfs_argc, 0444);
83 MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0\n"
84 "num_vfs=port1,port2,port1+2");
85
86 static uint8_t probe_vf[3] = {0, 0, 0};
87 static int probe_vfs_argc;
88 module_param_array(probe_vf, byte, &probe_vfs_argc, 0444);
89 MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)\n"
90 "probe_vf=port1,port2,port1+2");
91
92 int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
93 module_param_named(log_num_mgm_entry_size,
94 mlx4_log_num_mgm_entry_size, int, 0444);
95 MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num"
96 " of qp per mcg, for example:"
97 " 10 gives 248.range: 7 <="
98 " log_num_mgm_entry_size <= 12."
99 " To activate device managed"
100 " flow steering when available, set to -1");
101
102 static bool enable_64b_cqe_eqe = true;
103 module_param(enable_64b_cqe_eqe, bool, 0444);
104 MODULE_PARM_DESC(enable_64b_cqe_eqe,
105 "Enable 64 byte CQEs/EQEs when the FW supports this (default: True)");
106
107 #define PF_CONTEXT_BEHAVIOUR_MASK (MLX4_FUNC_CAP_64B_EQE_CQE | \
108 MLX4_FUNC_CAP_EQE_CQE_STRIDE | \
109 MLX4_FUNC_CAP_DMFS_A0_STATIC)
110
111 #define RESET_PERSIST_MASK_FLAGS (MLX4_FLAG_SRIOV)
112
113 static char mlx4_version[] =
114 DRV_NAME ": Mellanox ConnectX core driver v"
115 DRV_VERSION " (" DRV_RELDATE ")\n";
116
117 static struct mlx4_profile default_profile = {
118 .num_qp = 1 << 18,
119 .num_srq = 1 << 16,
120 .rdmarc_per_qp = 1 << 4,
121 .num_cq = 1 << 16,
122 .num_mcg = 1 << 13,
123 .num_mpt = 1 << 19,
124 .num_mtt = 1 << 20, /* It is really num mtt segements */
125 };
126
127 static struct mlx4_profile low_mem_profile = {
128 .num_qp = 1 << 17,
129 .num_srq = 1 << 6,
130 .rdmarc_per_qp = 1 << 4,
131 .num_cq = 1 << 8,
132 .num_mcg = 1 << 8,
133 .num_mpt = 1 << 9,
134 .num_mtt = 1 << 7,
135 };
136
137 static int log_num_mac = 7;
138 module_param_named(log_num_mac, log_num_mac, int, 0444);
139 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
140
141 static int log_num_vlan;
142 module_param_named(log_num_vlan, log_num_vlan, int, 0444);
143 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
144 /* Log2 max number of VLANs per ETH port (0-7) */
145 #define MLX4_LOG_NUM_VLANS 7
146 #define MLX4_MIN_LOG_NUM_VLANS 0
147 #define MLX4_MIN_LOG_NUM_MAC 1
148
149 static bool use_prio;
150 module_param_named(use_prio, use_prio, bool, 0444);
151 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports (deprecated)");
152
153 int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
154 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
155 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-7)");
156
157 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE};
158 static int arr_argc = 2;
159 module_param_array(port_type_array, int, &arr_argc, 0444);
160 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default "
161 "1 for IB, 2 for Ethernet");
162
163 struct mlx4_port_config {
164 struct list_head list;
165 enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
166 struct pci_dev *pdev;
167 };
168
169 static atomic_t pf_loading = ATOMIC_INIT(0);
170
171 int mlx4_check_port_params(struct mlx4_dev *dev,
172 enum mlx4_port_type *port_type)
173 {
174 int i;
175
176 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
177 for (i = 0; i < dev->caps.num_ports - 1; i++) {
178 if (port_type[i] != port_type[i + 1]) {
179 mlx4_err(dev, "Only same port types supported on this HCA, aborting\n");
180 return -EINVAL;
181 }
182 }
183 }
184
185 for (i = 0; i < dev->caps.num_ports; i++) {
186 if (!(port_type[i] & dev->caps.supported_type[i+1])) {
187 mlx4_err(dev, "Requested port type for port %d is not supported on this HCA\n",
188 i + 1);
189 return -EINVAL;
190 }
191 }
192 return 0;
193 }
194
195 static void mlx4_set_port_mask(struct mlx4_dev *dev)
196 {
197 int i;
198
199 for (i = 1; i <= dev->caps.num_ports; ++i)
200 dev->caps.port_mask[i] = dev->caps.port_type[i];
201 }
202
203 enum {
204 MLX4_QUERY_FUNC_NUM_SYS_EQS = 1 << 0,
205 };
206
207 static int mlx4_query_func(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
208 {
209 int err = 0;
210 struct mlx4_func func;
211
212 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) {
213 err = mlx4_QUERY_FUNC(dev, &func, 0);
214 if (err) {
215 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
216 return err;
217 }
218 dev_cap->max_eqs = func.max_eq;
219 dev_cap->reserved_eqs = func.rsvd_eqs;
220 dev_cap->reserved_uars = func.rsvd_uars;
221 err |= MLX4_QUERY_FUNC_NUM_SYS_EQS;
222 }
223 return err;
224 }
225
226 static void mlx4_enable_cqe_eqe_stride(struct mlx4_dev *dev)
227 {
228 struct mlx4_caps *dev_cap = &dev->caps;
229
230 /* FW not supporting or cancelled by user */
231 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_EQE_STRIDE) ||
232 !(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_CQE_STRIDE))
233 return;
234
235 /* Must have 64B CQE_EQE enabled by FW to use bigger stride
236 * When FW has NCSI it may decide not to report 64B CQE/EQEs
237 */
238 if (!(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_EQE) ||
239 !(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_CQE)) {
240 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
241 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
242 return;
243 }
244
245 if (cache_line_size() == 128 || cache_line_size() == 256) {
246 mlx4_dbg(dev, "Enabling CQE stride cacheLine supported\n");
247 /* Changing the real data inside CQE size to 32B */
248 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
249 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
250
251 if (mlx4_is_master(dev))
252 dev_cap->function_caps |= MLX4_FUNC_CAP_EQE_CQE_STRIDE;
253 } else {
254 if (cache_line_size() != 32 && cache_line_size() != 64)
255 mlx4_dbg(dev, "Disabling CQE stride, cacheLine size unsupported\n");
256 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
257 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
258 }
259 }
260
261 static int _mlx4_dev_port(struct mlx4_dev *dev, int port,
262 struct mlx4_port_cap *port_cap)
263 {
264 dev->caps.vl_cap[port] = port_cap->max_vl;
265 dev->caps.ib_mtu_cap[port] = port_cap->ib_mtu;
266 dev->phys_caps.gid_phys_table_len[port] = port_cap->max_gids;
267 dev->phys_caps.pkey_phys_table_len[port] = port_cap->max_pkeys;
268 /* set gid and pkey table operating lengths by default
269 * to non-sriov values
270 */
271 dev->caps.gid_table_len[port] = port_cap->max_gids;
272 dev->caps.pkey_table_len[port] = port_cap->max_pkeys;
273 dev->caps.port_width_cap[port] = port_cap->max_port_width;
274 dev->caps.eth_mtu_cap[port] = port_cap->eth_mtu;
275 dev->caps.def_mac[port] = port_cap->def_mac;
276 dev->caps.supported_type[port] = port_cap->supported_port_types;
277 dev->caps.suggested_type[port] = port_cap->suggested_type;
278 dev->caps.default_sense[port] = port_cap->default_sense;
279 dev->caps.trans_type[port] = port_cap->trans_type;
280 dev->caps.vendor_oui[port] = port_cap->vendor_oui;
281 dev->caps.wavelength[port] = port_cap->wavelength;
282 dev->caps.trans_code[port] = port_cap->trans_code;
283
284 return 0;
285 }
286
287 static int mlx4_dev_port(struct mlx4_dev *dev, int port,
288 struct mlx4_port_cap *port_cap)
289 {
290 int err = 0;
291
292 err = mlx4_QUERY_PORT(dev, port, port_cap);
293
294 if (err)
295 mlx4_err(dev, "QUERY_PORT command failed.\n");
296
297 return err;
298 }
299
300 static inline void mlx4_enable_ignore_fcs(struct mlx4_dev *dev)
301 {
302 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS))
303 return;
304
305 if (mlx4_is_mfunc(dev)) {
306 mlx4_dbg(dev, "SRIOV mode - Disabling Ignore FCS");
307 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
308 return;
309 }
310
311 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) {
312 mlx4_dbg(dev,
313 "Keep FCS is not supported - Disabling Ignore FCS");
314 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
315 return;
316 }
317 }
318
319 #define MLX4_A0_STEERING_TABLE_SIZE 256
320 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
321 {
322 int err;
323 int i;
324
325 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
326 if (err) {
327 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
328 return err;
329 }
330 mlx4_dev_cap_dump(dev, dev_cap);
331
332 if (dev_cap->min_page_sz > PAGE_SIZE) {
333 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
334 dev_cap->min_page_sz, PAGE_SIZE);
335 return -ENODEV;
336 }
337 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
338 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
339 dev_cap->num_ports, MLX4_MAX_PORTS);
340 return -ENODEV;
341 }
342
343 if (dev_cap->uar_size > pci_resource_len(dev->persist->pdev, 2)) {
344 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
345 dev_cap->uar_size,
346 (unsigned long long)
347 pci_resource_len(dev->persist->pdev, 2));
348 return -ENODEV;
349 }
350
351 dev->caps.num_ports = dev_cap->num_ports;
352 dev->caps.num_sys_eqs = dev_cap->num_sys_eqs;
353 dev->phys_caps.num_phys_eqs = dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS ?
354 dev->caps.num_sys_eqs :
355 MLX4_MAX_EQ_NUM;
356 for (i = 1; i <= dev->caps.num_ports; ++i) {
357 err = _mlx4_dev_port(dev, i, dev_cap->port_cap + i);
358 if (err) {
359 mlx4_err(dev, "QUERY_PORT command failed, aborting\n");
360 return err;
361 }
362 }
363
364 dev->caps.uar_page_size = PAGE_SIZE;
365 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
366 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
367 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
368 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
369 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
370 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
371 dev->caps.max_wqes = dev_cap->max_qp_sz;
372 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
373 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
374 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
375 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
376 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
377 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
378 /*
379 * Subtract 1 from the limit because we need to allocate a
380 * spare CQE so the HCA HW can tell the difference between an
381 * empty CQ and a full CQ.
382 */
383 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
384 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
385 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
386 dev->caps.reserved_mtts = dev_cap->reserved_mtts;
387 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
388
389 /* The first 128 UARs are used for EQ doorbells */
390 dev->caps.reserved_uars = max_t(int, 128, dev_cap->reserved_uars);
391 dev->caps.reserved_pds = dev_cap->reserved_pds;
392 dev->caps.reserved_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
393 dev_cap->reserved_xrcds : 0;
394 dev->caps.max_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
395 dev_cap->max_xrcds : 0;
396 dev->caps.mtt_entry_sz = dev_cap->mtt_entry_sz;
397
398 dev->caps.max_msg_sz = dev_cap->max_msg_sz;
399 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
400 dev->caps.flags = dev_cap->flags;
401 dev->caps.flags2 = dev_cap->flags2;
402 dev->caps.bmme_flags = dev_cap->bmme_flags;
403 dev->caps.reserved_lkey = dev_cap->reserved_lkey;
404 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
405 dev->caps.max_gso_sz = dev_cap->max_gso_sz;
406 dev->caps.max_rss_tbl_sz = dev_cap->max_rss_tbl_sz;
407
408 /* Sense port always allowed on supported devices for ConnectX-1 and -2 */
409 if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT)
410 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
411 /* Don't do sense port on multifunction devices (for now at least) */
412 if (mlx4_is_mfunc(dev))
413 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
414
415 if (mlx4_low_memory_profile()) {
416 dev->caps.log_num_macs = MLX4_MIN_LOG_NUM_MAC;
417 dev->caps.log_num_vlans = MLX4_MIN_LOG_NUM_VLANS;
418 } else {
419 dev->caps.log_num_macs = log_num_mac;
420 dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
421 }
422
423 for (i = 1; i <= dev->caps.num_ports; ++i) {
424 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
425 if (dev->caps.supported_type[i]) {
426 /* if only ETH is supported - assign ETH */
427 if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH)
428 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
429 /* if only IB is supported, assign IB */
430 else if (dev->caps.supported_type[i] ==
431 MLX4_PORT_TYPE_IB)
432 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
433 else {
434 /* if IB and ETH are supported, we set the port
435 * type according to user selection of port type;
436 * if user selected none, take the FW hint */
437 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE)
438 dev->caps.port_type[i] = dev->caps.suggested_type[i] ?
439 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB;
440 else
441 dev->caps.port_type[i] = port_type_array[i - 1];
442 }
443 }
444 /*
445 * Link sensing is allowed on the port if 3 conditions are true:
446 * 1. Both protocols are supported on the port.
447 * 2. Different types are supported on the port
448 * 3. FW declared that it supports link sensing
449 */
450 mlx4_priv(dev)->sense.sense_allowed[i] =
451 ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) &&
452 (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
453 (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT));
454
455 /*
456 * If "default_sense" bit is set, we move the port to "AUTO" mode
457 * and perform sense_port FW command to try and set the correct
458 * port type from beginning
459 */
460 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) {
461 enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE;
462 dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO;
463 mlx4_SENSE_PORT(dev, i, &sensed_port);
464 if (sensed_port != MLX4_PORT_TYPE_NONE)
465 dev->caps.port_type[i] = sensed_port;
466 } else {
467 dev->caps.possible_type[i] = dev->caps.port_type[i];
468 }
469
470 if (dev->caps.log_num_macs > dev_cap->port_cap[i].log_max_macs) {
471 dev->caps.log_num_macs = dev_cap->port_cap[i].log_max_macs;
472 mlx4_warn(dev, "Requested number of MACs is too much for port %d, reducing to %d\n",
473 i, 1 << dev->caps.log_num_macs);
474 }
475 if (dev->caps.log_num_vlans > dev_cap->port_cap[i].log_max_vlans) {
476 dev->caps.log_num_vlans = dev_cap->port_cap[i].log_max_vlans;
477 mlx4_warn(dev, "Requested number of VLANs is too much for port %d, reducing to %d\n",
478 i, 1 << dev->caps.log_num_vlans);
479 }
480 }
481
482 dev->caps.max_counters = 1 << ilog2(dev_cap->max_counters);
483
484 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
485 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
486 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
487 (1 << dev->caps.log_num_macs) *
488 (1 << dev->caps.log_num_vlans) *
489 dev->caps.num_ports;
490 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
491
492 if (dev_cap->dmfs_high_rate_qpn_base > 0 &&
493 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)
494 dev->caps.dmfs_high_rate_qpn_base = dev_cap->dmfs_high_rate_qpn_base;
495 else
496 dev->caps.dmfs_high_rate_qpn_base =
497 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
498
499 if (dev_cap->dmfs_high_rate_qpn_range > 0 &&
500 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN) {
501 dev->caps.dmfs_high_rate_qpn_range = dev_cap->dmfs_high_rate_qpn_range;
502 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DEFAULT;
503 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_FS_A0;
504 } else {
505 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_NOT_SUPPORTED;
506 dev->caps.dmfs_high_rate_qpn_base =
507 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
508 dev->caps.dmfs_high_rate_qpn_range = MLX4_A0_STEERING_TABLE_SIZE;
509 }
510
511 dev->caps.rl_caps = dev_cap->rl_caps;
512
513 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_RSS_RAW_ETH] =
514 dev->caps.dmfs_high_rate_qpn_range;
515
516 dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
517 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
518 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
519 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
520
521 dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
522
523 if (!enable_64b_cqe_eqe && !mlx4_is_slave(dev)) {
524 if (dev_cap->flags &
525 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) {
526 mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n");
527 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
528 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
529 }
530
531 if (dev_cap->flags2 &
532 (MLX4_DEV_CAP_FLAG2_CQE_STRIDE |
533 MLX4_DEV_CAP_FLAG2_EQE_STRIDE)) {
534 mlx4_warn(dev, "Disabling EQE/CQE stride per user request\n");
535 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
536 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
537 }
538 }
539
540 if ((dev->caps.flags &
541 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) &&
542 mlx4_is_master(dev))
543 dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE;
544
545 if (!mlx4_is_slave(dev)) {
546 mlx4_enable_cqe_eqe_stride(dev);
547 dev->caps.alloc_res_qp_mask =
548 (dev->caps.bf_reg_size ? MLX4_RESERVE_ETH_BF_QP : 0) |
549 MLX4_RESERVE_A0_QP;
550
551 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) &&
552 dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
553 mlx4_warn(dev, "Old device ETS support detected\n");
554 mlx4_warn(dev, "Consider upgrading device FW.\n");
555 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_ETS_CFG;
556 }
557
558 } else {
559 dev->caps.alloc_res_qp_mask = 0;
560 }
561
562 mlx4_enable_ignore_fcs(dev);
563
564 return 0;
565 }
566
567 static int mlx4_get_pcie_dev_link_caps(struct mlx4_dev *dev,
568 enum pci_bus_speed *speed,
569 enum pcie_link_width *width)
570 {
571 u32 lnkcap1, lnkcap2;
572 int err1, err2;
573
574 #define PCIE_MLW_CAP_SHIFT 4 /* start of MLW mask in link capabilities */
575
576 *speed = PCI_SPEED_UNKNOWN;
577 *width = PCIE_LNK_WIDTH_UNKNOWN;
578
579 err1 = pcie_capability_read_dword(dev->persist->pdev, PCI_EXP_LNKCAP,
580 &lnkcap1);
581 err2 = pcie_capability_read_dword(dev->persist->pdev, PCI_EXP_LNKCAP2,
582 &lnkcap2);
583 if (!err2 && lnkcap2) { /* PCIe r3.0-compliant */
584 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
585 *speed = PCIE_SPEED_8_0GT;
586 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
587 *speed = PCIE_SPEED_5_0GT;
588 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
589 *speed = PCIE_SPEED_2_5GT;
590 }
591 if (!err1) {
592 *width = (lnkcap1 & PCI_EXP_LNKCAP_MLW) >> PCIE_MLW_CAP_SHIFT;
593 if (!lnkcap2) { /* pre-r3.0 */
594 if (lnkcap1 & PCI_EXP_LNKCAP_SLS_5_0GB)
595 *speed = PCIE_SPEED_5_0GT;
596 else if (lnkcap1 & PCI_EXP_LNKCAP_SLS_2_5GB)
597 *speed = PCIE_SPEED_2_5GT;
598 }
599 }
600
601 if (*speed == PCI_SPEED_UNKNOWN || *width == PCIE_LNK_WIDTH_UNKNOWN) {
602 return err1 ? err1 :
603 err2 ? err2 : -EINVAL;
604 }
605 return 0;
606 }
607
608 static void mlx4_check_pcie_caps(struct mlx4_dev *dev)
609 {
610 enum pcie_link_width width, width_cap;
611 enum pci_bus_speed speed, speed_cap;
612 int err;
613
614 #define PCIE_SPEED_STR(speed) \
615 (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" : \
616 speed == PCIE_SPEED_5_0GT ? "5.0GT/s" : \
617 speed == PCIE_SPEED_2_5GT ? "2.5GT/s" : \
618 "Unknown")
619
620 err = mlx4_get_pcie_dev_link_caps(dev, &speed_cap, &width_cap);
621 if (err) {
622 mlx4_warn(dev,
623 "Unable to determine PCIe device BW capabilities\n");
624 return;
625 }
626
627 err = pcie_get_minimum_link(dev->persist->pdev, &speed, &width);
628 if (err || speed == PCI_SPEED_UNKNOWN ||
629 width == PCIE_LNK_WIDTH_UNKNOWN) {
630 mlx4_warn(dev,
631 "Unable to determine PCI device chain minimum BW\n");
632 return;
633 }
634
635 if (width != width_cap || speed != speed_cap)
636 mlx4_warn(dev,
637 "PCIe BW is different than device's capability\n");
638
639 mlx4_info(dev, "PCIe link speed is %s, device supports %s\n",
640 PCIE_SPEED_STR(speed), PCIE_SPEED_STR(speed_cap));
641 mlx4_info(dev, "PCIe link width is x%d, device supports x%d\n",
642 width, width_cap);
643 return;
644 }
645
646 /*The function checks if there are live vf, return the num of them*/
647 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
648 {
649 struct mlx4_priv *priv = mlx4_priv(dev);
650 struct mlx4_slave_state *s_state;
651 int i;
652 int ret = 0;
653
654 for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
655 s_state = &priv->mfunc.master.slave_state[i];
656 if (s_state->active && s_state->last_cmd !=
657 MLX4_COMM_CMD_RESET) {
658 mlx4_warn(dev, "%s: slave: %d is still active\n",
659 __func__, i);
660 ret++;
661 }
662 }
663 return ret;
664 }
665
666 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
667 {
668 u32 qk = MLX4_RESERVED_QKEY_BASE;
669
670 if (qpn >= dev->phys_caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
671 qpn < dev->phys_caps.base_proxy_sqpn)
672 return -EINVAL;
673
674 if (qpn >= dev->phys_caps.base_tunnel_sqpn)
675 /* tunnel qp */
676 qk += qpn - dev->phys_caps.base_tunnel_sqpn;
677 else
678 qk += qpn - dev->phys_caps.base_proxy_sqpn;
679 *qkey = qk;
680 return 0;
681 }
682 EXPORT_SYMBOL(mlx4_get_parav_qkey);
683
684 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val)
685 {
686 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
687
688 if (!mlx4_is_master(dev))
689 return;
690
691 priv->virt2phys_pkey[slave][port - 1][i] = val;
692 }
693 EXPORT_SYMBOL(mlx4_sync_pkey_table);
694
695 void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid)
696 {
697 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
698
699 if (!mlx4_is_master(dev))
700 return;
701
702 priv->slave_node_guids[slave] = guid;
703 }
704 EXPORT_SYMBOL(mlx4_put_slave_node_guid);
705
706 __be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave)
707 {
708 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
709
710 if (!mlx4_is_master(dev))
711 return 0;
712
713 return priv->slave_node_guids[slave];
714 }
715 EXPORT_SYMBOL(mlx4_get_slave_node_guid);
716
717 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
718 {
719 struct mlx4_priv *priv = mlx4_priv(dev);
720 struct mlx4_slave_state *s_slave;
721
722 if (!mlx4_is_master(dev))
723 return 0;
724
725 s_slave = &priv->mfunc.master.slave_state[slave];
726 return !!s_slave->active;
727 }
728 EXPORT_SYMBOL(mlx4_is_slave_active);
729
730 static void slave_adjust_steering_mode(struct mlx4_dev *dev,
731 struct mlx4_dev_cap *dev_cap,
732 struct mlx4_init_hca_param *hca_param)
733 {
734 dev->caps.steering_mode = hca_param->steering_mode;
735 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
736 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
737 dev->caps.fs_log_max_ucast_qp_range_size =
738 dev_cap->fs_log_max_ucast_qp_range_size;
739 } else
740 dev->caps.num_qp_per_mgm =
741 4 * ((1 << hca_param->log_mc_entry_sz)/16 - 2);
742
743 mlx4_dbg(dev, "Steering mode is: %s\n",
744 mlx4_steering_mode_str(dev->caps.steering_mode));
745 }
746
747 static int mlx4_slave_cap(struct mlx4_dev *dev)
748 {
749 int err;
750 u32 page_size;
751 struct mlx4_dev_cap dev_cap;
752 struct mlx4_func_cap func_cap;
753 struct mlx4_init_hca_param hca_param;
754 u8 i;
755
756 memset(&hca_param, 0, sizeof(hca_param));
757 err = mlx4_QUERY_HCA(dev, &hca_param);
758 if (err) {
759 mlx4_err(dev, "QUERY_HCA command failed, aborting\n");
760 return err;
761 }
762
763 /* fail if the hca has an unknown global capability
764 * at this time global_caps should be always zeroed
765 */
766 if (hca_param.global_caps) {
767 mlx4_err(dev, "Unknown hca global capabilities\n");
768 return -ENOSYS;
769 }
770
771 mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
772
773 dev->caps.hca_core_clock = hca_param.hca_core_clock;
774
775 memset(&dev_cap, 0, sizeof(dev_cap));
776 dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
777 err = mlx4_dev_cap(dev, &dev_cap);
778 if (err) {
779 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
780 return err;
781 }
782
783 err = mlx4_QUERY_FW(dev);
784 if (err)
785 mlx4_err(dev, "QUERY_FW command failed: could not get FW version\n");
786
787 page_size = ~dev->caps.page_size_cap + 1;
788 mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
789 if (page_size > PAGE_SIZE) {
790 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
791 page_size, PAGE_SIZE);
792 return -ENODEV;
793 }
794
795 /* slave gets uar page size from QUERY_HCA fw command */
796 dev->caps.uar_page_size = 1 << (hca_param.uar_page_sz + 12);
797
798 /* TODO: relax this assumption */
799 if (dev->caps.uar_page_size != PAGE_SIZE) {
800 mlx4_err(dev, "UAR size:%d != kernel PAGE_SIZE of %ld\n",
801 dev->caps.uar_page_size, PAGE_SIZE);
802 return -ENODEV;
803 }
804
805 memset(&func_cap, 0, sizeof(func_cap));
806 err = mlx4_QUERY_FUNC_CAP(dev, 0, &func_cap);
807 if (err) {
808 mlx4_err(dev, "QUERY_FUNC_CAP general command failed, aborting (%d)\n",
809 err);
810 return err;
811 }
812
813 if ((func_cap.pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
814 PF_CONTEXT_BEHAVIOUR_MASK) {
815 mlx4_err(dev, "Unknown pf context behaviour %x known flags %x\n",
816 func_cap.pf_context_behaviour, PF_CONTEXT_BEHAVIOUR_MASK);
817 return -ENOSYS;
818 }
819
820 dev->caps.num_ports = func_cap.num_ports;
821 dev->quotas.qp = func_cap.qp_quota;
822 dev->quotas.srq = func_cap.srq_quota;
823 dev->quotas.cq = func_cap.cq_quota;
824 dev->quotas.mpt = func_cap.mpt_quota;
825 dev->quotas.mtt = func_cap.mtt_quota;
826 dev->caps.num_qps = 1 << hca_param.log_num_qps;
827 dev->caps.num_srqs = 1 << hca_param.log_num_srqs;
828 dev->caps.num_cqs = 1 << hca_param.log_num_cqs;
829 dev->caps.num_mpts = 1 << hca_param.log_mpt_sz;
830 dev->caps.num_eqs = func_cap.max_eq;
831 dev->caps.reserved_eqs = func_cap.reserved_eq;
832 dev->caps.reserved_lkey = func_cap.reserved_lkey;
833 dev->caps.num_pds = MLX4_NUM_PDS;
834 dev->caps.num_mgms = 0;
835 dev->caps.num_amgms = 0;
836
837 if (dev->caps.num_ports > MLX4_MAX_PORTS) {
838 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
839 dev->caps.num_ports, MLX4_MAX_PORTS);
840 return -ENODEV;
841 }
842
843 dev->caps.qp0_qkey = kcalloc(dev->caps.num_ports, sizeof(u32), GFP_KERNEL);
844 dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
845 dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
846 dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
847 dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
848
849 if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy ||
850 !dev->caps.qp1_tunnel || !dev->caps.qp1_proxy ||
851 !dev->caps.qp0_qkey) {
852 err = -ENOMEM;
853 goto err_mem;
854 }
855
856 for (i = 1; i <= dev->caps.num_ports; ++i) {
857 err = mlx4_QUERY_FUNC_CAP(dev, i, &func_cap);
858 if (err) {
859 mlx4_err(dev, "QUERY_FUNC_CAP port command failed for port %d, aborting (%d)\n",
860 i, err);
861 goto err_mem;
862 }
863 dev->caps.qp0_qkey[i - 1] = func_cap.qp0_qkey;
864 dev->caps.qp0_tunnel[i - 1] = func_cap.qp0_tunnel_qpn;
865 dev->caps.qp0_proxy[i - 1] = func_cap.qp0_proxy_qpn;
866 dev->caps.qp1_tunnel[i - 1] = func_cap.qp1_tunnel_qpn;
867 dev->caps.qp1_proxy[i - 1] = func_cap.qp1_proxy_qpn;
868 dev->caps.port_mask[i] = dev->caps.port_type[i];
869 dev->caps.phys_port_id[i] = func_cap.phys_port_id;
870 if (mlx4_get_slave_pkey_gid_tbl_len(dev, i,
871 &dev->caps.gid_table_len[i],
872 &dev->caps.pkey_table_len[i]))
873 goto err_mem;
874 }
875
876 if (dev->caps.uar_page_size * (dev->caps.num_uars -
877 dev->caps.reserved_uars) >
878 pci_resource_len(dev->persist->pdev,
879 2)) {
880 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
881 dev->caps.uar_page_size * dev->caps.num_uars,
882 (unsigned long long)
883 pci_resource_len(dev->persist->pdev, 2));
884 goto err_mem;
885 }
886
887 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) {
888 dev->caps.eqe_size = 64;
889 dev->caps.eqe_factor = 1;
890 } else {
891 dev->caps.eqe_size = 32;
892 dev->caps.eqe_factor = 0;
893 }
894
895 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) {
896 dev->caps.cqe_size = 64;
897 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
898 } else {
899 dev->caps.cqe_size = 32;
900 }
901
902 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_EQE_STRIDE_ENABLED) {
903 dev->caps.eqe_size = hca_param.eqe_size;
904 dev->caps.eqe_factor = 0;
905 }
906
907 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_CQE_STRIDE_ENABLED) {
908 dev->caps.cqe_size = hca_param.cqe_size;
909 /* User still need to know when CQE > 32B */
910 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
911 }
912
913 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
914 mlx4_warn(dev, "Timestamping is not supported in slave mode\n");
915
916 slave_adjust_steering_mode(dev, &dev_cap, &hca_param);
917 mlx4_dbg(dev, "RSS support for IP fragments is %s\n",
918 hca_param.rss_ip_frags ? "on" : "off");
919
920 if (func_cap.extra_flags & MLX4_QUERY_FUNC_FLAGS_BF_RES_QP &&
921 dev->caps.bf_reg_size)
922 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_ETH_BF_QP;
923
924 if (func_cap.extra_flags & MLX4_QUERY_FUNC_FLAGS_A0_RES_QP)
925 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_A0_QP;
926
927 return 0;
928
929 err_mem:
930 kfree(dev->caps.qp0_qkey);
931 kfree(dev->caps.qp0_tunnel);
932 kfree(dev->caps.qp0_proxy);
933 kfree(dev->caps.qp1_tunnel);
934 kfree(dev->caps.qp1_proxy);
935 dev->caps.qp0_qkey = NULL;
936 dev->caps.qp0_tunnel = NULL;
937 dev->caps.qp0_proxy = NULL;
938 dev->caps.qp1_tunnel = NULL;
939 dev->caps.qp1_proxy = NULL;
940
941 return err;
942 }
943
944 static void mlx4_request_modules(struct mlx4_dev *dev)
945 {
946 int port;
947 int has_ib_port = false;
948 int has_eth_port = false;
949 #define EN_DRV_NAME "mlx4_en"
950 #define IB_DRV_NAME "mlx4_ib"
951
952 for (port = 1; port <= dev->caps.num_ports; port++) {
953 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
954 has_ib_port = true;
955 else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
956 has_eth_port = true;
957 }
958
959 if (has_eth_port)
960 request_module_nowait(EN_DRV_NAME);
961 if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
962 request_module_nowait(IB_DRV_NAME);
963 }
964
965 /*
966 * Change the port configuration of the device.
967 * Every user of this function must hold the port mutex.
968 */
969 int mlx4_change_port_types(struct mlx4_dev *dev,
970 enum mlx4_port_type *port_types)
971 {
972 int err = 0;
973 int change = 0;
974 int port;
975
976 for (port = 0; port < dev->caps.num_ports; port++) {
977 /* Change the port type only if the new type is different
978 * from the current, and not set to Auto */
979 if (port_types[port] != dev->caps.port_type[port + 1])
980 change = 1;
981 }
982 if (change) {
983 mlx4_unregister_device(dev);
984 for (port = 1; port <= dev->caps.num_ports; port++) {
985 mlx4_CLOSE_PORT(dev, port);
986 dev->caps.port_type[port] = port_types[port - 1];
987 err = mlx4_SET_PORT(dev, port, -1);
988 if (err) {
989 mlx4_err(dev, "Failed to set port %d, aborting\n",
990 port);
991 goto out;
992 }
993 }
994 mlx4_set_port_mask(dev);
995 err = mlx4_register_device(dev);
996 if (err) {
997 mlx4_err(dev, "Failed to register device\n");
998 goto out;
999 }
1000 mlx4_request_modules(dev);
1001 }
1002
1003 out:
1004 return err;
1005 }
1006
1007 static ssize_t show_port_type(struct device *dev,
1008 struct device_attribute *attr,
1009 char *buf)
1010 {
1011 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1012 port_attr);
1013 struct mlx4_dev *mdev = info->dev;
1014 char type[8];
1015
1016 sprintf(type, "%s",
1017 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
1018 "ib" : "eth");
1019 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
1020 sprintf(buf, "auto (%s)\n", type);
1021 else
1022 sprintf(buf, "%s\n", type);
1023
1024 return strlen(buf);
1025 }
1026
1027 static ssize_t set_port_type(struct device *dev,
1028 struct device_attribute *attr,
1029 const char *buf, size_t count)
1030 {
1031 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1032 port_attr);
1033 struct mlx4_dev *mdev = info->dev;
1034 struct mlx4_priv *priv = mlx4_priv(mdev);
1035 enum mlx4_port_type types[MLX4_MAX_PORTS];
1036 enum mlx4_port_type new_types[MLX4_MAX_PORTS];
1037 static DEFINE_MUTEX(set_port_type_mutex);
1038 int i;
1039 int err = 0;
1040
1041 mutex_lock(&set_port_type_mutex);
1042
1043 if (!strcmp(buf, "ib\n"))
1044 info->tmp_type = MLX4_PORT_TYPE_IB;
1045 else if (!strcmp(buf, "eth\n"))
1046 info->tmp_type = MLX4_PORT_TYPE_ETH;
1047 else if (!strcmp(buf, "auto\n"))
1048 info->tmp_type = MLX4_PORT_TYPE_AUTO;
1049 else {
1050 mlx4_err(mdev, "%s is not supported port type\n", buf);
1051 err = -EINVAL;
1052 goto err_out;
1053 }
1054
1055 mlx4_stop_sense(mdev);
1056 mutex_lock(&priv->port_mutex);
1057 /* Possible type is always the one that was delivered */
1058 mdev->caps.possible_type[info->port] = info->tmp_type;
1059
1060 for (i = 0; i < mdev->caps.num_ports; i++) {
1061 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
1062 mdev->caps.possible_type[i+1];
1063 if (types[i] == MLX4_PORT_TYPE_AUTO)
1064 types[i] = mdev->caps.port_type[i+1];
1065 }
1066
1067 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
1068 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
1069 for (i = 1; i <= mdev->caps.num_ports; i++) {
1070 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
1071 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
1072 err = -EINVAL;
1073 }
1074 }
1075 }
1076 if (err) {
1077 mlx4_err(mdev, "Auto sensing is not supported on this HCA. Set only 'eth' or 'ib' for both ports (should be the same)\n");
1078 goto out;
1079 }
1080
1081 mlx4_do_sense_ports(mdev, new_types, types);
1082
1083 err = mlx4_check_port_params(mdev, new_types);
1084 if (err)
1085 goto out;
1086
1087 /* We are about to apply the changes after the configuration
1088 * was verified, no need to remember the temporary types
1089 * any more */
1090 for (i = 0; i < mdev->caps.num_ports; i++)
1091 priv->port[i + 1].tmp_type = 0;
1092
1093 err = mlx4_change_port_types(mdev, new_types);
1094
1095 out:
1096 mlx4_start_sense(mdev);
1097 mutex_unlock(&priv->port_mutex);
1098 err_out:
1099 mutex_unlock(&set_port_type_mutex);
1100
1101 return err ? err : count;
1102 }
1103
1104 enum ibta_mtu {
1105 IB_MTU_256 = 1,
1106 IB_MTU_512 = 2,
1107 IB_MTU_1024 = 3,
1108 IB_MTU_2048 = 4,
1109 IB_MTU_4096 = 5
1110 };
1111
1112 static inline int int_to_ibta_mtu(int mtu)
1113 {
1114 switch (mtu) {
1115 case 256: return IB_MTU_256;
1116 case 512: return IB_MTU_512;
1117 case 1024: return IB_MTU_1024;
1118 case 2048: return IB_MTU_2048;
1119 case 4096: return IB_MTU_4096;
1120 default: return -1;
1121 }
1122 }
1123
1124 static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
1125 {
1126 switch (mtu) {
1127 case IB_MTU_256: return 256;
1128 case IB_MTU_512: return 512;
1129 case IB_MTU_1024: return 1024;
1130 case IB_MTU_2048: return 2048;
1131 case IB_MTU_4096: return 4096;
1132 default: return -1;
1133 }
1134 }
1135
1136 static ssize_t show_port_ib_mtu(struct device *dev,
1137 struct device_attribute *attr,
1138 char *buf)
1139 {
1140 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1141 port_mtu_attr);
1142 struct mlx4_dev *mdev = info->dev;
1143
1144 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
1145 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
1146
1147 sprintf(buf, "%d\n",
1148 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
1149 return strlen(buf);
1150 }
1151
1152 static ssize_t set_port_ib_mtu(struct device *dev,
1153 struct device_attribute *attr,
1154 const char *buf, size_t count)
1155 {
1156 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1157 port_mtu_attr);
1158 struct mlx4_dev *mdev = info->dev;
1159 struct mlx4_priv *priv = mlx4_priv(mdev);
1160 int err, port, mtu, ibta_mtu = -1;
1161
1162 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
1163 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
1164 return -EINVAL;
1165 }
1166
1167 err = kstrtoint(buf, 0, &mtu);
1168 if (!err)
1169 ibta_mtu = int_to_ibta_mtu(mtu);
1170
1171 if (err || ibta_mtu < 0) {
1172 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
1173 return -EINVAL;
1174 }
1175
1176 mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
1177
1178 mlx4_stop_sense(mdev);
1179 mutex_lock(&priv->port_mutex);
1180 mlx4_unregister_device(mdev);
1181 for (port = 1; port <= mdev->caps.num_ports; port++) {
1182 mlx4_CLOSE_PORT(mdev, port);
1183 err = mlx4_SET_PORT(mdev, port, -1);
1184 if (err) {
1185 mlx4_err(mdev, "Failed to set port %d, aborting\n",
1186 port);
1187 goto err_set_port;
1188 }
1189 }
1190 err = mlx4_register_device(mdev);
1191 err_set_port:
1192 mutex_unlock(&priv->port_mutex);
1193 mlx4_start_sense(mdev);
1194 return err ? err : count;
1195 }
1196
1197 int mlx4_bond(struct mlx4_dev *dev)
1198 {
1199 int ret = 0;
1200 struct mlx4_priv *priv = mlx4_priv(dev);
1201
1202 mutex_lock(&priv->bond_mutex);
1203
1204 if (!mlx4_is_bonded(dev))
1205 ret = mlx4_do_bond(dev, true);
1206 else
1207 ret = 0;
1208
1209 mutex_unlock(&priv->bond_mutex);
1210 if (ret)
1211 mlx4_err(dev, "Failed to bond device: %d\n", ret);
1212 else
1213 mlx4_dbg(dev, "Device is bonded\n");
1214 return ret;
1215 }
1216 EXPORT_SYMBOL_GPL(mlx4_bond);
1217
1218 int mlx4_unbond(struct mlx4_dev *dev)
1219 {
1220 int ret = 0;
1221 struct mlx4_priv *priv = mlx4_priv(dev);
1222
1223 mutex_lock(&priv->bond_mutex);
1224
1225 if (mlx4_is_bonded(dev))
1226 ret = mlx4_do_bond(dev, false);
1227
1228 mutex_unlock(&priv->bond_mutex);
1229 if (ret)
1230 mlx4_err(dev, "Failed to unbond device: %d\n", ret);
1231 else
1232 mlx4_dbg(dev, "Device is unbonded\n");
1233 return ret;
1234 }
1235 EXPORT_SYMBOL_GPL(mlx4_unbond);
1236
1237
1238 int mlx4_port_map_set(struct mlx4_dev *dev, struct mlx4_port_map *v2p)
1239 {
1240 u8 port1 = v2p->port1;
1241 u8 port2 = v2p->port2;
1242 struct mlx4_priv *priv = mlx4_priv(dev);
1243 int err;
1244
1245 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP))
1246 return -ENOTSUPP;
1247
1248 mutex_lock(&priv->bond_mutex);
1249
1250 /* zero means keep current mapping for this port */
1251 if (port1 == 0)
1252 port1 = priv->v2p.port1;
1253 if (port2 == 0)
1254 port2 = priv->v2p.port2;
1255
1256 if ((port1 < 1) || (port1 > MLX4_MAX_PORTS) ||
1257 (port2 < 1) || (port2 > MLX4_MAX_PORTS) ||
1258 (port1 == 2 && port2 == 1)) {
1259 /* besides boundary checks cross mapping makes
1260 * no sense and therefore not allowed */
1261 err = -EINVAL;
1262 } else if ((port1 == priv->v2p.port1) &&
1263 (port2 == priv->v2p.port2)) {
1264 err = 0;
1265 } else {
1266 err = mlx4_virt2phy_port_map(dev, port1, port2);
1267 if (!err) {
1268 mlx4_dbg(dev, "port map changed: [%d][%d]\n",
1269 port1, port2);
1270 priv->v2p.port1 = port1;
1271 priv->v2p.port2 = port2;
1272 } else {
1273 mlx4_err(dev, "Failed to change port mape: %d\n", err);
1274 }
1275 }
1276
1277 mutex_unlock(&priv->bond_mutex);
1278 return err;
1279 }
1280 EXPORT_SYMBOL_GPL(mlx4_port_map_set);
1281
1282 static int mlx4_load_fw(struct mlx4_dev *dev)
1283 {
1284 struct mlx4_priv *priv = mlx4_priv(dev);
1285 int err;
1286
1287 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
1288 GFP_HIGHUSER | __GFP_NOWARN, 0);
1289 if (!priv->fw.fw_icm) {
1290 mlx4_err(dev, "Couldn't allocate FW area, aborting\n");
1291 return -ENOMEM;
1292 }
1293
1294 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
1295 if (err) {
1296 mlx4_err(dev, "MAP_FA command failed, aborting\n");
1297 goto err_free;
1298 }
1299
1300 err = mlx4_RUN_FW(dev);
1301 if (err) {
1302 mlx4_err(dev, "RUN_FW command failed, aborting\n");
1303 goto err_unmap_fa;
1304 }
1305
1306 return 0;
1307
1308 err_unmap_fa:
1309 mlx4_UNMAP_FA(dev);
1310
1311 err_free:
1312 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1313 return err;
1314 }
1315
1316 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
1317 int cmpt_entry_sz)
1318 {
1319 struct mlx4_priv *priv = mlx4_priv(dev);
1320 int err;
1321 int num_eqs;
1322
1323 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
1324 cmpt_base +
1325 ((u64) (MLX4_CMPT_TYPE_QP *
1326 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1327 cmpt_entry_sz, dev->caps.num_qps,
1328 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1329 0, 0);
1330 if (err)
1331 goto err;
1332
1333 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
1334 cmpt_base +
1335 ((u64) (MLX4_CMPT_TYPE_SRQ *
1336 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1337 cmpt_entry_sz, dev->caps.num_srqs,
1338 dev->caps.reserved_srqs, 0, 0);
1339 if (err)
1340 goto err_qp;
1341
1342 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
1343 cmpt_base +
1344 ((u64) (MLX4_CMPT_TYPE_CQ *
1345 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1346 cmpt_entry_sz, dev->caps.num_cqs,
1347 dev->caps.reserved_cqs, 0, 0);
1348 if (err)
1349 goto err_srq;
1350
1351 num_eqs = dev->phys_caps.num_phys_eqs;
1352 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
1353 cmpt_base +
1354 ((u64) (MLX4_CMPT_TYPE_EQ *
1355 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1356 cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
1357 if (err)
1358 goto err_cq;
1359
1360 return 0;
1361
1362 err_cq:
1363 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1364
1365 err_srq:
1366 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1367
1368 err_qp:
1369 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1370
1371 err:
1372 return err;
1373 }
1374
1375 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
1376 struct mlx4_init_hca_param *init_hca, u64 icm_size)
1377 {
1378 struct mlx4_priv *priv = mlx4_priv(dev);
1379 u64 aux_pages;
1380 int num_eqs;
1381 int err;
1382
1383 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
1384 if (err) {
1385 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting\n");
1386 return err;
1387 }
1388
1389 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory\n",
1390 (unsigned long long) icm_size >> 10,
1391 (unsigned long long) aux_pages << 2);
1392
1393 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
1394 GFP_HIGHUSER | __GFP_NOWARN, 0);
1395 if (!priv->fw.aux_icm) {
1396 mlx4_err(dev, "Couldn't allocate aux memory, aborting\n");
1397 return -ENOMEM;
1398 }
1399
1400 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
1401 if (err) {
1402 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting\n");
1403 goto err_free_aux;
1404 }
1405
1406 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
1407 if (err) {
1408 mlx4_err(dev, "Failed to map cMPT context memory, aborting\n");
1409 goto err_unmap_aux;
1410 }
1411
1412
1413 num_eqs = dev->phys_caps.num_phys_eqs;
1414 err = mlx4_init_icm_table(dev, &priv->eq_table.table,
1415 init_hca->eqc_base, dev_cap->eqc_entry_sz,
1416 num_eqs, num_eqs, 0, 0);
1417 if (err) {
1418 mlx4_err(dev, "Failed to map EQ context memory, aborting\n");
1419 goto err_unmap_cmpt;
1420 }
1421
1422 /*
1423 * Reserved MTT entries must be aligned up to a cacheline
1424 * boundary, since the FW will write to them, while the driver
1425 * writes to all other MTT entries. (The variable
1426 * dev->caps.mtt_entry_sz below is really the MTT segment
1427 * size, not the raw entry size)
1428 */
1429 dev->caps.reserved_mtts =
1430 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
1431 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
1432
1433 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
1434 init_hca->mtt_base,
1435 dev->caps.mtt_entry_sz,
1436 dev->caps.num_mtts,
1437 dev->caps.reserved_mtts, 1, 0);
1438 if (err) {
1439 mlx4_err(dev, "Failed to map MTT context memory, aborting\n");
1440 goto err_unmap_eq;
1441 }
1442
1443 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
1444 init_hca->dmpt_base,
1445 dev_cap->dmpt_entry_sz,
1446 dev->caps.num_mpts,
1447 dev->caps.reserved_mrws, 1, 1);
1448 if (err) {
1449 mlx4_err(dev, "Failed to map dMPT context memory, aborting\n");
1450 goto err_unmap_mtt;
1451 }
1452
1453 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
1454 init_hca->qpc_base,
1455 dev_cap->qpc_entry_sz,
1456 dev->caps.num_qps,
1457 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1458 0, 0);
1459 if (err) {
1460 mlx4_err(dev, "Failed to map QP context memory, aborting\n");
1461 goto err_unmap_dmpt;
1462 }
1463
1464 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
1465 init_hca->auxc_base,
1466 dev_cap->aux_entry_sz,
1467 dev->caps.num_qps,
1468 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1469 0, 0);
1470 if (err) {
1471 mlx4_err(dev, "Failed to map AUXC context memory, aborting\n");
1472 goto err_unmap_qp;
1473 }
1474
1475 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
1476 init_hca->altc_base,
1477 dev_cap->altc_entry_sz,
1478 dev->caps.num_qps,
1479 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1480 0, 0);
1481 if (err) {
1482 mlx4_err(dev, "Failed to map ALTC context memory, aborting\n");
1483 goto err_unmap_auxc;
1484 }
1485
1486 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
1487 init_hca->rdmarc_base,
1488 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
1489 dev->caps.num_qps,
1490 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1491 0, 0);
1492 if (err) {
1493 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
1494 goto err_unmap_altc;
1495 }
1496
1497 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
1498 init_hca->cqc_base,
1499 dev_cap->cqc_entry_sz,
1500 dev->caps.num_cqs,
1501 dev->caps.reserved_cqs, 0, 0);
1502 if (err) {
1503 mlx4_err(dev, "Failed to map CQ context memory, aborting\n");
1504 goto err_unmap_rdmarc;
1505 }
1506
1507 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
1508 init_hca->srqc_base,
1509 dev_cap->srq_entry_sz,
1510 dev->caps.num_srqs,
1511 dev->caps.reserved_srqs, 0, 0);
1512 if (err) {
1513 mlx4_err(dev, "Failed to map SRQ context memory, aborting\n");
1514 goto err_unmap_cq;
1515 }
1516
1517 /*
1518 * For flow steering device managed mode it is required to use
1519 * mlx4_init_icm_table. For B0 steering mode it's not strictly
1520 * required, but for simplicity just map the whole multicast
1521 * group table now. The table isn't very big and it's a lot
1522 * easier than trying to track ref counts.
1523 */
1524 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1525 init_hca->mc_base,
1526 mlx4_get_mgm_entry_size(dev),
1527 dev->caps.num_mgms + dev->caps.num_amgms,
1528 dev->caps.num_mgms + dev->caps.num_amgms,
1529 0, 0);
1530 if (err) {
1531 mlx4_err(dev, "Failed to map MCG context memory, aborting\n");
1532 goto err_unmap_srq;
1533 }
1534
1535 return 0;
1536
1537 err_unmap_srq:
1538 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1539
1540 err_unmap_cq:
1541 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1542
1543 err_unmap_rdmarc:
1544 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1545
1546 err_unmap_altc:
1547 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1548
1549 err_unmap_auxc:
1550 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1551
1552 err_unmap_qp:
1553 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1554
1555 err_unmap_dmpt:
1556 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1557
1558 err_unmap_mtt:
1559 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1560
1561 err_unmap_eq:
1562 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1563
1564 err_unmap_cmpt:
1565 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1566 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1567 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1568 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1569
1570 err_unmap_aux:
1571 mlx4_UNMAP_ICM_AUX(dev);
1572
1573 err_free_aux:
1574 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1575
1576 return err;
1577 }
1578
1579 static void mlx4_free_icms(struct mlx4_dev *dev)
1580 {
1581 struct mlx4_priv *priv = mlx4_priv(dev);
1582
1583 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1584 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1585 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1586 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1587 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1588 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1589 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1590 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1591 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1592 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1593 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1594 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1595 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1596 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1597
1598 mlx4_UNMAP_ICM_AUX(dev);
1599 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1600 }
1601
1602 static void mlx4_slave_exit(struct mlx4_dev *dev)
1603 {
1604 struct mlx4_priv *priv = mlx4_priv(dev);
1605
1606 mutex_lock(&priv->cmd.slave_cmd_mutex);
1607 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP,
1608 MLX4_COMM_TIME))
1609 mlx4_warn(dev, "Failed to close slave function\n");
1610 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1611 }
1612
1613 static int map_bf_area(struct mlx4_dev *dev)
1614 {
1615 struct mlx4_priv *priv = mlx4_priv(dev);
1616 resource_size_t bf_start;
1617 resource_size_t bf_len;
1618 int err = 0;
1619
1620 if (!dev->caps.bf_reg_size)
1621 return -ENXIO;
1622
1623 bf_start = pci_resource_start(dev->persist->pdev, 2) +
1624 (dev->caps.num_uars << PAGE_SHIFT);
1625 bf_len = pci_resource_len(dev->persist->pdev, 2) -
1626 (dev->caps.num_uars << PAGE_SHIFT);
1627 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1628 if (!priv->bf_mapping)
1629 err = -ENOMEM;
1630
1631 return err;
1632 }
1633
1634 static void unmap_bf_area(struct mlx4_dev *dev)
1635 {
1636 if (mlx4_priv(dev)->bf_mapping)
1637 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1638 }
1639
1640 cycle_t mlx4_read_clock(struct mlx4_dev *dev)
1641 {
1642 u32 clockhi, clocklo, clockhi1;
1643 cycle_t cycles;
1644 int i;
1645 struct mlx4_priv *priv = mlx4_priv(dev);
1646
1647 for (i = 0; i < 10; i++) {
1648 clockhi = swab32(readl(priv->clock_mapping));
1649 clocklo = swab32(readl(priv->clock_mapping + 4));
1650 clockhi1 = swab32(readl(priv->clock_mapping));
1651 if (clockhi == clockhi1)
1652 break;
1653 }
1654
1655 cycles = (u64) clockhi << 32 | (u64) clocklo;
1656
1657 return cycles;
1658 }
1659 EXPORT_SYMBOL_GPL(mlx4_read_clock);
1660
1661
1662 static int map_internal_clock(struct mlx4_dev *dev)
1663 {
1664 struct mlx4_priv *priv = mlx4_priv(dev);
1665
1666 priv->clock_mapping =
1667 ioremap(pci_resource_start(dev->persist->pdev,
1668 priv->fw.clock_bar) +
1669 priv->fw.clock_offset, MLX4_CLOCK_SIZE);
1670
1671 if (!priv->clock_mapping)
1672 return -ENOMEM;
1673
1674 return 0;
1675 }
1676
1677 static void unmap_internal_clock(struct mlx4_dev *dev)
1678 {
1679 struct mlx4_priv *priv = mlx4_priv(dev);
1680
1681 if (priv->clock_mapping)
1682 iounmap(priv->clock_mapping);
1683 }
1684
1685 static void mlx4_close_hca(struct mlx4_dev *dev)
1686 {
1687 unmap_internal_clock(dev);
1688 unmap_bf_area(dev);
1689 if (mlx4_is_slave(dev))
1690 mlx4_slave_exit(dev);
1691 else {
1692 mlx4_CLOSE_HCA(dev, 0);
1693 mlx4_free_icms(dev);
1694 }
1695 }
1696
1697 static void mlx4_close_fw(struct mlx4_dev *dev)
1698 {
1699 if (!mlx4_is_slave(dev)) {
1700 mlx4_UNMAP_FA(dev);
1701 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1702 }
1703 }
1704
1705 static int mlx4_comm_check_offline(struct mlx4_dev *dev)
1706 {
1707 #define COMM_CHAN_OFFLINE_OFFSET 0x09
1708
1709 u32 comm_flags;
1710 u32 offline_bit;
1711 unsigned long end;
1712 struct mlx4_priv *priv = mlx4_priv(dev);
1713
1714 end = msecs_to_jiffies(MLX4_COMM_OFFLINE_TIME_OUT) + jiffies;
1715 while (time_before(jiffies, end)) {
1716 comm_flags = swab32(readl((__iomem char *)priv->mfunc.comm +
1717 MLX4_COMM_CHAN_FLAGS));
1718 offline_bit = (comm_flags &
1719 (u32)(1 << COMM_CHAN_OFFLINE_OFFSET));
1720 if (!offline_bit)
1721 return 0;
1722 /* There are cases as part of AER/Reset flow that PF needs
1723 * around 100 msec to load. We therefore sleep for 100 msec
1724 * to allow other tasks to make use of that CPU during this
1725 * time interval.
1726 */
1727 msleep(100);
1728 }
1729 mlx4_err(dev, "Communication channel is offline.\n");
1730 return -EIO;
1731 }
1732
1733 static void mlx4_reset_vf_support(struct mlx4_dev *dev)
1734 {
1735 #define COMM_CHAN_RST_OFFSET 0x1e
1736
1737 struct mlx4_priv *priv = mlx4_priv(dev);
1738 u32 comm_rst;
1739 u32 comm_caps;
1740
1741 comm_caps = swab32(readl((__iomem char *)priv->mfunc.comm +
1742 MLX4_COMM_CHAN_CAPS));
1743 comm_rst = (comm_caps & (u32)(1 << COMM_CHAN_RST_OFFSET));
1744
1745 if (comm_rst)
1746 dev->caps.vf_caps |= MLX4_VF_CAP_FLAG_RESET;
1747 }
1748
1749 static int mlx4_init_slave(struct mlx4_dev *dev)
1750 {
1751 struct mlx4_priv *priv = mlx4_priv(dev);
1752 u64 dma = (u64) priv->mfunc.vhcr_dma;
1753 int ret_from_reset = 0;
1754 u32 slave_read;
1755 u32 cmd_channel_ver;
1756
1757 if (atomic_read(&pf_loading)) {
1758 mlx4_warn(dev, "PF is not ready - Deferring probe\n");
1759 return -EPROBE_DEFER;
1760 }
1761
1762 mutex_lock(&priv->cmd.slave_cmd_mutex);
1763 priv->cmd.max_cmds = 1;
1764 if (mlx4_comm_check_offline(dev)) {
1765 mlx4_err(dev, "PF is not responsive, skipping initialization\n");
1766 goto err_offline;
1767 }
1768
1769 mlx4_reset_vf_support(dev);
1770 mlx4_warn(dev, "Sending reset\n");
1771 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
1772 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME);
1773 /* if we are in the middle of flr the slave will try
1774 * NUM_OF_RESET_RETRIES times before leaving.*/
1775 if (ret_from_reset) {
1776 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
1777 mlx4_warn(dev, "slave is currently in the middle of FLR - Deferring probe\n");
1778 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1779 return -EPROBE_DEFER;
1780 } else
1781 goto err;
1782 }
1783
1784 /* check the driver version - the slave I/F revision
1785 * must match the master's */
1786 slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
1787 cmd_channel_ver = mlx4_comm_get_version();
1788
1789 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
1790 MLX4_COMM_GET_IF_REV(slave_read)) {
1791 mlx4_err(dev, "slave driver version is not supported by the master\n");
1792 goto err;
1793 }
1794
1795 mlx4_warn(dev, "Sending vhcr0\n");
1796 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
1797 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
1798 goto err;
1799 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
1800 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
1801 goto err;
1802 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
1803 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
1804 goto err;
1805 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma,
1806 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
1807 goto err;
1808
1809 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1810 return 0;
1811
1812 err:
1813 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP, 0);
1814 err_offline:
1815 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1816 return -EIO;
1817 }
1818
1819 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
1820 {
1821 int i;
1822
1823 for (i = 1; i <= dev->caps.num_ports; i++) {
1824 if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
1825 dev->caps.gid_table_len[i] =
1826 mlx4_get_slave_num_gids(dev, 0, i);
1827 else
1828 dev->caps.gid_table_len[i] = 1;
1829 dev->caps.pkey_table_len[i] =
1830 dev->phys_caps.pkey_phys_table_len[i] - 1;
1831 }
1832 }
1833
1834 static int choose_log_fs_mgm_entry_size(int qp_per_entry)
1835 {
1836 int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE;
1837
1838 for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE;
1839 i++) {
1840 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2))
1841 break;
1842 }
1843
1844 return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1;
1845 }
1846
1847 static const char *dmfs_high_rate_steering_mode_str(int dmfs_high_steer_mode)
1848 {
1849 switch (dmfs_high_steer_mode) {
1850 case MLX4_STEERING_DMFS_A0_DEFAULT:
1851 return "default performance";
1852
1853 case MLX4_STEERING_DMFS_A0_DYNAMIC:
1854 return "dynamic hybrid mode";
1855
1856 case MLX4_STEERING_DMFS_A0_STATIC:
1857 return "performance optimized for limited rule configuration (static)";
1858
1859 case MLX4_STEERING_DMFS_A0_DISABLE:
1860 return "disabled performance optimized steering";
1861
1862 case MLX4_STEERING_DMFS_A0_NOT_SUPPORTED:
1863 return "performance optimized steering not supported";
1864
1865 default:
1866 return "Unrecognized mode";
1867 }
1868 }
1869
1870 #define MLX4_DMFS_A0_STEERING (1UL << 2)
1871
1872 static void choose_steering_mode(struct mlx4_dev *dev,
1873 struct mlx4_dev_cap *dev_cap)
1874 {
1875 if (mlx4_log_num_mgm_entry_size <= 0) {
1876 if ((-mlx4_log_num_mgm_entry_size) & MLX4_DMFS_A0_STEERING) {
1877 if (dev->caps.dmfs_high_steer_mode ==
1878 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
1879 mlx4_err(dev, "DMFS high rate mode not supported\n");
1880 else
1881 dev->caps.dmfs_high_steer_mode =
1882 MLX4_STEERING_DMFS_A0_STATIC;
1883 }
1884 }
1885
1886 if (mlx4_log_num_mgm_entry_size <= 0 &&
1887 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN &&
1888 (!mlx4_is_mfunc(dev) ||
1889 (dev_cap->fs_max_num_qp_per_entry >=
1890 (dev->persist->num_vfs + 1))) &&
1891 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >=
1892 MLX4_MIN_MGM_LOG_ENTRY_SIZE) {
1893 dev->oper_log_mgm_entry_size =
1894 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry);
1895 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
1896 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
1897 dev->caps.fs_log_max_ucast_qp_range_size =
1898 dev_cap->fs_log_max_ucast_qp_range_size;
1899 } else {
1900 if (dev->caps.dmfs_high_steer_mode !=
1901 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
1902 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DISABLE;
1903 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER &&
1904 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1905 dev->caps.steering_mode = MLX4_STEERING_MODE_B0;
1906 else {
1907 dev->caps.steering_mode = MLX4_STEERING_MODE_A0;
1908
1909 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER ||
1910 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
1911 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags set to use B0 steering - falling back to A0 steering mode\n");
1912 }
1913 dev->oper_log_mgm_entry_size =
1914 mlx4_log_num_mgm_entry_size > 0 ?
1915 mlx4_log_num_mgm_entry_size :
1916 MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
1917 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev);
1918 }
1919 mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, modparam log_num_mgm_entry_size = %d\n",
1920 mlx4_steering_mode_str(dev->caps.steering_mode),
1921 dev->oper_log_mgm_entry_size,
1922 mlx4_log_num_mgm_entry_size);
1923 }
1924
1925 static void choose_tunnel_offload_mode(struct mlx4_dev *dev,
1926 struct mlx4_dev_cap *dev_cap)
1927 {
1928 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED &&
1929 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
1930 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_VXLAN;
1931 else
1932 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_NONE;
1933
1934 mlx4_dbg(dev, "Tunneling offload mode is: %s\n", (dev->caps.tunnel_offload_mode
1935 == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) ? "vxlan" : "none");
1936 }
1937
1938 static int mlx4_validate_optimized_steering(struct mlx4_dev *dev)
1939 {
1940 int i;
1941 struct mlx4_port_cap port_cap;
1942
1943 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
1944 return -EINVAL;
1945
1946 for (i = 1; i <= dev->caps.num_ports; i++) {
1947 if (mlx4_dev_port(dev, i, &port_cap)) {
1948 mlx4_err(dev,
1949 "QUERY_DEV_CAP command failed, can't veify DMFS high rate steering.\n");
1950 } else if ((dev->caps.dmfs_high_steer_mode !=
1951 MLX4_STEERING_DMFS_A0_DEFAULT) &&
1952 (port_cap.dmfs_optimized_state ==
1953 !!(dev->caps.dmfs_high_steer_mode ==
1954 MLX4_STEERING_DMFS_A0_DISABLE))) {
1955 mlx4_err(dev,
1956 "DMFS high rate steer mode differ, driver requested %s but %s in FW.\n",
1957 dmfs_high_rate_steering_mode_str(
1958 dev->caps.dmfs_high_steer_mode),
1959 (port_cap.dmfs_optimized_state ?
1960 "enabled" : "disabled"));
1961 }
1962 }
1963
1964 return 0;
1965 }
1966
1967 static int mlx4_init_fw(struct mlx4_dev *dev)
1968 {
1969 struct mlx4_mod_stat_cfg mlx4_cfg;
1970 int err = 0;
1971
1972 if (!mlx4_is_slave(dev)) {
1973 err = mlx4_QUERY_FW(dev);
1974 if (err) {
1975 if (err == -EACCES)
1976 mlx4_info(dev, "non-primary physical function, skipping\n");
1977 else
1978 mlx4_err(dev, "QUERY_FW command failed, aborting\n");
1979 return err;
1980 }
1981
1982 err = mlx4_load_fw(dev);
1983 if (err) {
1984 mlx4_err(dev, "Failed to start FW, aborting\n");
1985 return err;
1986 }
1987
1988 mlx4_cfg.log_pg_sz_m = 1;
1989 mlx4_cfg.log_pg_sz = 0;
1990 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
1991 if (err)
1992 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
1993 }
1994
1995 return err;
1996 }
1997
1998 static int mlx4_init_hca(struct mlx4_dev *dev)
1999 {
2000 struct mlx4_priv *priv = mlx4_priv(dev);
2001 struct mlx4_adapter adapter;
2002 struct mlx4_dev_cap dev_cap;
2003 struct mlx4_profile profile;
2004 struct mlx4_init_hca_param init_hca;
2005 u64 icm_size;
2006 struct mlx4_config_dev_params params;
2007 int err;
2008
2009 if (!mlx4_is_slave(dev)) {
2010 err = mlx4_dev_cap(dev, &dev_cap);
2011 if (err) {
2012 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
2013 return err;
2014 }
2015
2016 choose_steering_mode(dev, &dev_cap);
2017 choose_tunnel_offload_mode(dev, &dev_cap);
2018
2019 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC &&
2020 mlx4_is_master(dev))
2021 dev->caps.function_caps |= MLX4_FUNC_CAP_DMFS_A0_STATIC;
2022
2023 err = mlx4_get_phys_port_id(dev);
2024 if (err)
2025 mlx4_err(dev, "Fail to get physical port id\n");
2026
2027 if (mlx4_is_master(dev))
2028 mlx4_parav_master_pf_caps(dev);
2029
2030 if (mlx4_low_memory_profile()) {
2031 mlx4_info(dev, "Running from within kdump kernel. Using low memory profile\n");
2032 profile = low_mem_profile;
2033 } else {
2034 profile = default_profile;
2035 }
2036 if (dev->caps.steering_mode ==
2037 MLX4_STEERING_MODE_DEVICE_MANAGED)
2038 profile.num_mcg = MLX4_FS_NUM_MCG;
2039
2040 icm_size = mlx4_make_profile(dev, &profile, &dev_cap,
2041 &init_hca);
2042 if ((long long) icm_size < 0) {
2043 err = icm_size;
2044 return err;
2045 }
2046
2047 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
2048
2049 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
2050 init_hca.uar_page_sz = PAGE_SHIFT - 12;
2051 init_hca.mw_enabled = 0;
2052 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2053 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
2054 init_hca.mw_enabled = INIT_HCA_TPT_MW_ENABLE;
2055
2056 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
2057 if (err)
2058 return err;
2059
2060 err = mlx4_INIT_HCA(dev, &init_hca);
2061 if (err) {
2062 mlx4_err(dev, "INIT_HCA command failed, aborting\n");
2063 goto err_free_icm;
2064 }
2065
2066 if (dev_cap.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) {
2067 err = mlx4_query_func(dev, &dev_cap);
2068 if (err < 0) {
2069 mlx4_err(dev, "QUERY_FUNC command failed, aborting.\n");
2070 goto err_close;
2071 } else if (err & MLX4_QUERY_FUNC_NUM_SYS_EQS) {
2072 dev->caps.num_eqs = dev_cap.max_eqs;
2073 dev->caps.reserved_eqs = dev_cap.reserved_eqs;
2074 dev->caps.reserved_uars = dev_cap.reserved_uars;
2075 }
2076 }
2077
2078 /*
2079 * If TS is supported by FW
2080 * read HCA frequency by QUERY_HCA command
2081 */
2082 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
2083 memset(&init_hca, 0, sizeof(init_hca));
2084 err = mlx4_QUERY_HCA(dev, &init_hca);
2085 if (err) {
2086 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp\n");
2087 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2088 } else {
2089 dev->caps.hca_core_clock =
2090 init_hca.hca_core_clock;
2091 }
2092
2093 /* In case we got HCA frequency 0 - disable timestamping
2094 * to avoid dividing by zero
2095 */
2096 if (!dev->caps.hca_core_clock) {
2097 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2098 mlx4_err(dev,
2099 "HCA frequency is 0 - timestamping is not supported\n");
2100 } else if (map_internal_clock(dev)) {
2101 /*
2102 * Map internal clock,
2103 * in case of failure disable timestamping
2104 */
2105 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2106 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported\n");
2107 }
2108 }
2109
2110 if (dev->caps.dmfs_high_steer_mode !=
2111 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) {
2112 if (mlx4_validate_optimized_steering(dev))
2113 mlx4_warn(dev, "Optimized steering validation failed\n");
2114
2115 if (dev->caps.dmfs_high_steer_mode ==
2116 MLX4_STEERING_DMFS_A0_DISABLE) {
2117 dev->caps.dmfs_high_rate_qpn_base =
2118 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
2119 dev->caps.dmfs_high_rate_qpn_range =
2120 MLX4_A0_STEERING_TABLE_SIZE;
2121 }
2122
2123 mlx4_dbg(dev, "DMFS high rate steer mode is: %s\n",
2124 dmfs_high_rate_steering_mode_str(
2125 dev->caps.dmfs_high_steer_mode));
2126 }
2127 } else {
2128 err = mlx4_init_slave(dev);
2129 if (err) {
2130 if (err != -EPROBE_DEFER)
2131 mlx4_err(dev, "Failed to initialize slave\n");
2132 return err;
2133 }
2134
2135 err = mlx4_slave_cap(dev);
2136 if (err) {
2137 mlx4_err(dev, "Failed to obtain slave caps\n");
2138 goto err_close;
2139 }
2140 }
2141
2142 if (map_bf_area(dev))
2143 mlx4_dbg(dev, "Failed to map blue flame area\n");
2144
2145 /*Only the master set the ports, all the rest got it from it.*/
2146 if (!mlx4_is_slave(dev))
2147 mlx4_set_port_mask(dev);
2148
2149 err = mlx4_QUERY_ADAPTER(dev, &adapter);
2150 if (err) {
2151 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting\n");
2152 goto unmap_bf;
2153 }
2154
2155 /* Query CONFIG_DEV parameters */
2156 err = mlx4_config_dev_retrieval(dev, &params);
2157 if (err && err != -ENOTSUPP) {
2158 mlx4_err(dev, "Failed to query CONFIG_DEV parameters\n");
2159 } else if (!err) {
2160 dev->caps.rx_checksum_flags_port[1] = params.rx_csum_flags_port_1;
2161 dev->caps.rx_checksum_flags_port[2] = params.rx_csum_flags_port_2;
2162 }
2163 priv->eq_table.inta_pin = adapter.inta_pin;
2164 memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
2165
2166 return 0;
2167
2168 unmap_bf:
2169 unmap_internal_clock(dev);
2170 unmap_bf_area(dev);
2171
2172 if (mlx4_is_slave(dev)) {
2173 kfree(dev->caps.qp0_qkey);
2174 kfree(dev->caps.qp0_tunnel);
2175 kfree(dev->caps.qp0_proxy);
2176 kfree(dev->caps.qp1_tunnel);
2177 kfree(dev->caps.qp1_proxy);
2178 }
2179
2180 err_close:
2181 if (mlx4_is_slave(dev))
2182 mlx4_slave_exit(dev);
2183 else
2184 mlx4_CLOSE_HCA(dev, 0);
2185
2186 err_free_icm:
2187 if (!mlx4_is_slave(dev))
2188 mlx4_free_icms(dev);
2189
2190 return err;
2191 }
2192
2193 static int mlx4_init_counters_table(struct mlx4_dev *dev)
2194 {
2195 struct mlx4_priv *priv = mlx4_priv(dev);
2196 int nent;
2197
2198 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2199 return -ENOENT;
2200
2201 nent = dev->caps.max_counters;
2202 return mlx4_bitmap_init(&priv->counters_bitmap, nent, nent - 1, 0, 0);
2203 }
2204
2205 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
2206 {
2207 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
2208 }
2209
2210 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
2211 {
2212 struct mlx4_priv *priv = mlx4_priv(dev);
2213
2214 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2215 return -ENOENT;
2216
2217 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
2218 if (*idx == -1)
2219 return -ENOMEM;
2220
2221 return 0;
2222 }
2223
2224 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
2225 {
2226 u64 out_param;
2227 int err;
2228
2229 if (mlx4_is_mfunc(dev)) {
2230 err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
2231 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
2232 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
2233 if (!err)
2234 *idx = get_param_l(&out_param);
2235
2236 return err;
2237 }
2238 return __mlx4_counter_alloc(dev, idx);
2239 }
2240 EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
2241
2242 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
2243 {
2244 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR);
2245 return;
2246 }
2247
2248 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
2249 {
2250 u64 in_param = 0;
2251
2252 if (mlx4_is_mfunc(dev)) {
2253 set_param_l(&in_param, idx);
2254 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
2255 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
2256 MLX4_CMD_WRAPPED);
2257 return;
2258 }
2259 __mlx4_counter_free(dev, idx);
2260 }
2261 EXPORT_SYMBOL_GPL(mlx4_counter_free);
2262
2263 void mlx4_set_admin_guid(struct mlx4_dev *dev, __be64 guid, int entry, int port)
2264 {
2265 struct mlx4_priv *priv = mlx4_priv(dev);
2266
2267 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
2268 }
2269 EXPORT_SYMBOL_GPL(mlx4_set_admin_guid);
2270
2271 __be64 mlx4_get_admin_guid(struct mlx4_dev *dev, int entry, int port)
2272 {
2273 struct mlx4_priv *priv = mlx4_priv(dev);
2274
2275 return priv->mfunc.master.vf_admin[entry].vport[port].guid;
2276 }
2277 EXPORT_SYMBOL_GPL(mlx4_get_admin_guid);
2278
2279 void mlx4_set_random_admin_guid(struct mlx4_dev *dev, int entry, int port)
2280 {
2281 struct mlx4_priv *priv = mlx4_priv(dev);
2282 __be64 guid;
2283
2284 /* hw GUID */
2285 if (entry == 0)
2286 return;
2287
2288 get_random_bytes((char *)&guid, sizeof(guid));
2289 guid &= ~(cpu_to_be64(1ULL << 56));
2290 guid |= cpu_to_be64(1ULL << 57);
2291 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
2292 }
2293
2294 static int mlx4_setup_hca(struct mlx4_dev *dev)
2295 {
2296 struct mlx4_priv *priv = mlx4_priv(dev);
2297 int err;
2298 int port;
2299 __be32 ib_port_default_caps;
2300
2301 err = mlx4_init_uar_table(dev);
2302 if (err) {
2303 mlx4_err(dev, "Failed to initialize user access region table, aborting\n");
2304 return err;
2305 }
2306
2307 err = mlx4_uar_alloc(dev, &priv->driver_uar);
2308 if (err) {
2309 mlx4_err(dev, "Failed to allocate driver access region, aborting\n");
2310 goto err_uar_table_free;
2311 }
2312
2313 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
2314 if (!priv->kar) {
2315 mlx4_err(dev, "Couldn't map kernel access region, aborting\n");
2316 err = -ENOMEM;
2317 goto err_uar_free;
2318 }
2319
2320 err = mlx4_init_pd_table(dev);
2321 if (err) {
2322 mlx4_err(dev, "Failed to initialize protection domain table, aborting\n");
2323 goto err_kar_unmap;
2324 }
2325
2326 err = mlx4_init_xrcd_table(dev);
2327 if (err) {
2328 mlx4_err(dev, "Failed to initialize reliable connection domain table, aborting\n");
2329 goto err_pd_table_free;
2330 }
2331
2332 err = mlx4_init_mr_table(dev);
2333 if (err) {
2334 mlx4_err(dev, "Failed to initialize memory region table, aborting\n");
2335 goto err_xrcd_table_free;
2336 }
2337
2338 if (!mlx4_is_slave(dev)) {
2339 err = mlx4_init_mcg_table(dev);
2340 if (err) {
2341 mlx4_err(dev, "Failed to initialize multicast group table, aborting\n");
2342 goto err_mr_table_free;
2343 }
2344 err = mlx4_config_mad_demux(dev);
2345 if (err) {
2346 mlx4_err(dev, "Failed in config_mad_demux, aborting\n");
2347 goto err_mcg_table_free;
2348 }
2349 }
2350
2351 err = mlx4_init_eq_table(dev);
2352 if (err) {
2353 mlx4_err(dev, "Failed to initialize event queue table, aborting\n");
2354 goto err_mcg_table_free;
2355 }
2356
2357 err = mlx4_cmd_use_events(dev);
2358 if (err) {
2359 mlx4_err(dev, "Failed to switch to event-driven firmware commands, aborting\n");
2360 goto err_eq_table_free;
2361 }
2362
2363 err = mlx4_NOP(dev);
2364 if (err) {
2365 if (dev->flags & MLX4_FLAG_MSI_X) {
2366 mlx4_warn(dev, "NOP command failed to generate MSI-X interrupt IRQ %d)\n",
2367 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
2368 mlx4_warn(dev, "Trying again without MSI-X\n");
2369 } else {
2370 mlx4_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting\n",
2371 priv->eq_table.eq[dev->caps.num_comp_vectors].irq);
2372 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
2373 }
2374
2375 goto err_cmd_poll;
2376 }
2377
2378 mlx4_dbg(dev, "NOP command IRQ test passed\n");
2379
2380 err = mlx4_init_cq_table(dev);
2381 if (err) {
2382 mlx4_err(dev, "Failed to initialize completion queue table, aborting\n");
2383 goto err_cmd_poll;
2384 }
2385
2386 err = mlx4_init_srq_table(dev);
2387 if (err) {
2388 mlx4_err(dev, "Failed to initialize shared receive queue table, aborting\n");
2389 goto err_cq_table_free;
2390 }
2391
2392 err = mlx4_init_qp_table(dev);
2393 if (err) {
2394 mlx4_err(dev, "Failed to initialize queue pair table, aborting\n");
2395 goto err_srq_table_free;
2396 }
2397
2398 err = mlx4_init_counters_table(dev);
2399 if (err && err != -ENOENT) {
2400 mlx4_err(dev, "Failed to initialize counters table, aborting\n");
2401 goto err_qp_table_free;
2402 }
2403
2404 if (!mlx4_is_slave(dev)) {
2405 for (port = 1; port <= dev->caps.num_ports; port++) {
2406 ib_port_default_caps = 0;
2407 err = mlx4_get_port_ib_caps(dev, port,
2408 &ib_port_default_caps);
2409 if (err)
2410 mlx4_warn(dev, "failed to get port %d default ib capabilities (%d). Continuing with caps = 0\n",
2411 port, err);
2412 dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
2413
2414 /* initialize per-slave default ib port capabilities */
2415 if (mlx4_is_master(dev)) {
2416 int i;
2417 for (i = 0; i < dev->num_slaves; i++) {
2418 if (i == mlx4_master_func_num(dev))
2419 continue;
2420 priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
2421 ib_port_default_caps;
2422 }
2423 }
2424
2425 if (mlx4_is_mfunc(dev))
2426 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
2427 else
2428 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
2429
2430 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
2431 dev->caps.pkey_table_len[port] : -1);
2432 if (err) {
2433 mlx4_err(dev, "Failed to set port %d, aborting\n",
2434 port);
2435 goto err_counters_table_free;
2436 }
2437 }
2438 }
2439
2440 return 0;
2441
2442 err_counters_table_free:
2443 mlx4_cleanup_counters_table(dev);
2444
2445 err_qp_table_free:
2446 mlx4_cleanup_qp_table(dev);
2447
2448 err_srq_table_free:
2449 mlx4_cleanup_srq_table(dev);
2450
2451 err_cq_table_free:
2452 mlx4_cleanup_cq_table(dev);
2453
2454 err_cmd_poll:
2455 mlx4_cmd_use_polling(dev);
2456
2457 err_eq_table_free:
2458 mlx4_cleanup_eq_table(dev);
2459
2460 err_mcg_table_free:
2461 if (!mlx4_is_slave(dev))
2462 mlx4_cleanup_mcg_table(dev);
2463
2464 err_mr_table_free:
2465 mlx4_cleanup_mr_table(dev);
2466
2467 err_xrcd_table_free:
2468 mlx4_cleanup_xrcd_table(dev);
2469
2470 err_pd_table_free:
2471 mlx4_cleanup_pd_table(dev);
2472
2473 err_kar_unmap:
2474 iounmap(priv->kar);
2475
2476 err_uar_free:
2477 mlx4_uar_free(dev, &priv->driver_uar);
2478
2479 err_uar_table_free:
2480 mlx4_cleanup_uar_table(dev);
2481 return err;
2482 }
2483
2484 static void mlx4_enable_msi_x(struct mlx4_dev *dev)
2485 {
2486 struct mlx4_priv *priv = mlx4_priv(dev);
2487 struct msix_entry *entries;
2488 int i;
2489
2490 if (msi_x) {
2491 int nreq = dev->caps.num_ports * num_online_cpus() + MSIX_LEGACY_SZ;
2492
2493 nreq = min_t(int, dev->caps.num_eqs - dev->caps.reserved_eqs,
2494 nreq);
2495
2496 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
2497 if (!entries)
2498 goto no_msi;
2499
2500 for (i = 0; i < nreq; ++i)
2501 entries[i].entry = i;
2502
2503 nreq = pci_enable_msix_range(dev->persist->pdev, entries, 2,
2504 nreq);
2505
2506 if (nreq < 0) {
2507 kfree(entries);
2508 goto no_msi;
2509 } else if (nreq < MSIX_LEGACY_SZ +
2510 dev->caps.num_ports * MIN_MSIX_P_PORT) {
2511 /*Working in legacy mode , all EQ's shared*/
2512 dev->caps.comp_pool = 0;
2513 dev->caps.num_comp_vectors = nreq - 1;
2514 } else {
2515 dev->caps.comp_pool = nreq - MSIX_LEGACY_SZ;
2516 dev->caps.num_comp_vectors = MSIX_LEGACY_SZ - 1;
2517 }
2518 for (i = 0; i < nreq; ++i)
2519 priv->eq_table.eq[i].irq = entries[i].vector;
2520
2521 dev->flags |= MLX4_FLAG_MSI_X;
2522
2523 kfree(entries);
2524 return;
2525 }
2526
2527 no_msi:
2528 dev->caps.num_comp_vectors = 1;
2529 dev->caps.comp_pool = 0;
2530
2531 for (i = 0; i < 2; ++i)
2532 priv->eq_table.eq[i].irq = dev->persist->pdev->irq;
2533 }
2534
2535 static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
2536 {
2537 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
2538 int err = 0;
2539
2540 info->dev = dev;
2541 info->port = port;
2542 if (!mlx4_is_slave(dev)) {
2543 mlx4_init_mac_table(dev, &info->mac_table);
2544 mlx4_init_vlan_table(dev, &info->vlan_table);
2545 mlx4_init_roce_gid_table(dev, &info->gid_table);
2546 info->base_qpn = mlx4_get_base_qpn(dev, port);
2547 }
2548
2549 sprintf(info->dev_name, "mlx4_port%d", port);
2550 info->port_attr.attr.name = info->dev_name;
2551 if (mlx4_is_mfunc(dev))
2552 info->port_attr.attr.mode = S_IRUGO;
2553 else {
2554 info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
2555 info->port_attr.store = set_port_type;
2556 }
2557 info->port_attr.show = show_port_type;
2558 sysfs_attr_init(&info->port_attr.attr);
2559
2560 err = device_create_file(&dev->persist->pdev->dev, &info->port_attr);
2561 if (err) {
2562 mlx4_err(dev, "Failed to create file for port %d\n", port);
2563 info->port = -1;
2564 }
2565
2566 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
2567 info->port_mtu_attr.attr.name = info->dev_mtu_name;
2568 if (mlx4_is_mfunc(dev))
2569 info->port_mtu_attr.attr.mode = S_IRUGO;
2570 else {
2571 info->port_mtu_attr.attr.mode = S_IRUGO | S_IWUSR;
2572 info->port_mtu_attr.store = set_port_ib_mtu;
2573 }
2574 info->port_mtu_attr.show = show_port_ib_mtu;
2575 sysfs_attr_init(&info->port_mtu_attr.attr);
2576
2577 err = device_create_file(&dev->persist->pdev->dev,
2578 &info->port_mtu_attr);
2579 if (err) {
2580 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
2581 device_remove_file(&info->dev->persist->pdev->dev,
2582 &info->port_attr);
2583 info->port = -1;
2584 }
2585
2586 return err;
2587 }
2588
2589 static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
2590 {
2591 if (info->port < 0)
2592 return;
2593
2594 device_remove_file(&info->dev->persist->pdev->dev, &info->port_attr);
2595 device_remove_file(&info->dev->persist->pdev->dev,
2596 &info->port_mtu_attr);
2597 }
2598
2599 static int mlx4_init_steering(struct mlx4_dev *dev)
2600 {
2601 struct mlx4_priv *priv = mlx4_priv(dev);
2602 int num_entries = dev->caps.num_ports;
2603 int i, j;
2604
2605 priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL);
2606 if (!priv->steer)
2607 return -ENOMEM;
2608
2609 for (i = 0; i < num_entries; i++)
2610 for (j = 0; j < MLX4_NUM_STEERS; j++) {
2611 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
2612 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
2613 }
2614 return 0;
2615 }
2616
2617 static void mlx4_clear_steering(struct mlx4_dev *dev)
2618 {
2619 struct mlx4_priv *priv = mlx4_priv(dev);
2620 struct mlx4_steer_index *entry, *tmp_entry;
2621 struct mlx4_promisc_qp *pqp, *tmp_pqp;
2622 int num_entries = dev->caps.num_ports;
2623 int i, j;
2624
2625 for (i = 0; i < num_entries; i++) {
2626 for (j = 0; j < MLX4_NUM_STEERS; j++) {
2627 list_for_each_entry_safe(pqp, tmp_pqp,
2628 &priv->steer[i].promisc_qps[j],
2629 list) {
2630 list_del(&pqp->list);
2631 kfree(pqp);
2632 }
2633 list_for_each_entry_safe(entry, tmp_entry,
2634 &priv->steer[i].steer_entries[j],
2635 list) {
2636 list_del(&entry->list);
2637 list_for_each_entry_safe(pqp, tmp_pqp,
2638 &entry->duplicates,
2639 list) {
2640 list_del(&pqp->list);
2641 kfree(pqp);
2642 }
2643 kfree(entry);
2644 }
2645 }
2646 }
2647 kfree(priv->steer);
2648 }
2649
2650 static int extended_func_num(struct pci_dev *pdev)
2651 {
2652 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
2653 }
2654
2655 #define MLX4_OWNER_BASE 0x8069c
2656 #define MLX4_OWNER_SIZE 4
2657
2658 static int mlx4_get_ownership(struct mlx4_dev *dev)
2659 {
2660 void __iomem *owner;
2661 u32 ret;
2662
2663 if (pci_channel_offline(dev->persist->pdev))
2664 return -EIO;
2665
2666 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +
2667 MLX4_OWNER_BASE,
2668 MLX4_OWNER_SIZE);
2669 if (!owner) {
2670 mlx4_err(dev, "Failed to obtain ownership bit\n");
2671 return -ENOMEM;
2672 }
2673
2674 ret = readl(owner);
2675 iounmap(owner);
2676 return (int) !!ret;
2677 }
2678
2679 static void mlx4_free_ownership(struct mlx4_dev *dev)
2680 {
2681 void __iomem *owner;
2682
2683 if (pci_channel_offline(dev->persist->pdev))
2684 return;
2685
2686 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +
2687 MLX4_OWNER_BASE,
2688 MLX4_OWNER_SIZE);
2689 if (!owner) {
2690 mlx4_err(dev, "Failed to obtain ownership bit\n");
2691 return;
2692 }
2693 writel(0, owner);
2694 msleep(1000);
2695 iounmap(owner);
2696 }
2697
2698 #define SRIOV_VALID_STATE(flags) (!!((flags) & MLX4_FLAG_SRIOV) ==\
2699 !!((flags) & MLX4_FLAG_MASTER))
2700
2701 static u64 mlx4_enable_sriov(struct mlx4_dev *dev, struct pci_dev *pdev,
2702 u8 total_vfs, int existing_vfs, int reset_flow)
2703 {
2704 u64 dev_flags = dev->flags;
2705 int err = 0;
2706
2707 if (reset_flow) {
2708 dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs),
2709 GFP_KERNEL);
2710 if (!dev->dev_vfs)
2711 goto free_mem;
2712 return dev_flags;
2713 }
2714
2715 atomic_inc(&pf_loading);
2716 if (dev->flags & MLX4_FLAG_SRIOV) {
2717 if (existing_vfs != total_vfs) {
2718 mlx4_err(dev, "SR-IOV was already enabled, but with num_vfs (%d) different than requested (%d)\n",
2719 existing_vfs, total_vfs);
2720 total_vfs = existing_vfs;
2721 }
2722 }
2723
2724 dev->dev_vfs = kzalloc(total_vfs * sizeof(*dev->dev_vfs), GFP_KERNEL);
2725 if (NULL == dev->dev_vfs) {
2726 mlx4_err(dev, "Failed to allocate memory for VFs\n");
2727 goto disable_sriov;
2728 }
2729
2730 if (!(dev->flags & MLX4_FLAG_SRIOV)) {
2731 mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n", total_vfs);
2732 err = pci_enable_sriov(pdev, total_vfs);
2733 }
2734 if (err) {
2735 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d)\n",
2736 err);
2737 goto disable_sriov;
2738 } else {
2739 mlx4_warn(dev, "Running in master mode\n");
2740 dev_flags |= MLX4_FLAG_SRIOV |
2741 MLX4_FLAG_MASTER;
2742 dev_flags &= ~MLX4_FLAG_SLAVE;
2743 dev->persist->num_vfs = total_vfs;
2744 }
2745 return dev_flags;
2746
2747 disable_sriov:
2748 atomic_dec(&pf_loading);
2749 free_mem:
2750 dev->persist->num_vfs = 0;
2751 kfree(dev->dev_vfs);
2752 return dev_flags & ~MLX4_FLAG_MASTER;
2753 }
2754
2755 enum {
2756 MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64 = -1,
2757 };
2758
2759 static int mlx4_check_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
2760 int *nvfs)
2761 {
2762 int requested_vfs = nvfs[0] + nvfs[1] + nvfs[2];
2763 /* Checking for 64 VFs as a limitation of CX2 */
2764 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_80_VFS) &&
2765 requested_vfs >= 64) {
2766 mlx4_err(dev, "Requested %d VFs, but FW does not support more than 64\n",
2767 requested_vfs);
2768 return MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64;
2769 }
2770 return 0;
2771 }
2772
2773 static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data,
2774 int total_vfs, int *nvfs, struct mlx4_priv *priv,
2775 int reset_flow)
2776 {
2777 struct mlx4_dev *dev;
2778 unsigned sum = 0;
2779 int err;
2780 int port;
2781 int i;
2782 struct mlx4_dev_cap *dev_cap = NULL;
2783 int existing_vfs = 0;
2784
2785 dev = &priv->dev;
2786
2787 INIT_LIST_HEAD(&priv->ctx_list);
2788 spin_lock_init(&priv->ctx_lock);
2789
2790 mutex_init(&priv->port_mutex);
2791 mutex_init(&priv->bond_mutex);
2792
2793 INIT_LIST_HEAD(&priv->pgdir_list);
2794 mutex_init(&priv->pgdir_mutex);
2795
2796 INIT_LIST_HEAD(&priv->bf_list);
2797 mutex_init(&priv->bf_mutex);
2798
2799 dev->rev_id = pdev->revision;
2800 dev->numa_node = dev_to_node(&pdev->dev);
2801
2802 /* Detect if this device is a virtual function */
2803 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
2804 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
2805 dev->flags |= MLX4_FLAG_SLAVE;
2806 } else {
2807 /* We reset the device and enable SRIOV only for physical
2808 * devices. Try to claim ownership on the device;
2809 * if already taken, skip -- do not allow multiple PFs */
2810 err = mlx4_get_ownership(dev);
2811 if (err) {
2812 if (err < 0)
2813 return err;
2814 else {
2815 mlx4_warn(dev, "Multiple PFs not yet supported - Skipping PF\n");
2816 return -EINVAL;
2817 }
2818 }
2819
2820 atomic_set(&priv->opreq_count, 0);
2821 INIT_WORK(&priv->opreq_task, mlx4_opreq_action);
2822
2823 /*
2824 * Now reset the HCA before we touch the PCI capabilities or
2825 * attempt a firmware command, since a boot ROM may have left
2826 * the HCA in an undefined state.
2827 */
2828 err = mlx4_reset(dev);
2829 if (err) {
2830 mlx4_err(dev, "Failed to reset HCA, aborting\n");
2831 goto err_sriov;
2832 }
2833
2834 if (total_vfs) {
2835 dev->flags = MLX4_FLAG_MASTER;
2836 existing_vfs = pci_num_vf(pdev);
2837 if (existing_vfs)
2838 dev->flags |= MLX4_FLAG_SRIOV;
2839 dev->persist->num_vfs = total_vfs;
2840 }
2841 }
2842
2843 /* on load remove any previous indication of internal error,
2844 * device is up.
2845 */
2846 dev->persist->state = MLX4_DEVICE_STATE_UP;
2847
2848 slave_start:
2849 err = mlx4_cmd_init(dev);
2850 if (err) {
2851 mlx4_err(dev, "Failed to init command interface, aborting\n");
2852 goto err_sriov;
2853 }
2854
2855 /* In slave functions, the communication channel must be initialized
2856 * before posting commands. Also, init num_slaves before calling
2857 * mlx4_init_hca */
2858 if (mlx4_is_mfunc(dev)) {
2859 if (mlx4_is_master(dev)) {
2860 dev->num_slaves = MLX4_MAX_NUM_SLAVES;
2861
2862 } else {
2863 dev->num_slaves = 0;
2864 err = mlx4_multi_func_init(dev);
2865 if (err) {
2866 mlx4_err(dev, "Failed to init slave mfunc interface, aborting\n");
2867 goto err_cmd;
2868 }
2869 }
2870 }
2871
2872 err = mlx4_init_fw(dev);
2873 if (err) {
2874 mlx4_err(dev, "Failed to init fw, aborting.\n");
2875 goto err_mfunc;
2876 }
2877
2878 if (mlx4_is_master(dev)) {
2879 /* when we hit the goto slave_start below, dev_cap already initialized */
2880 if (!dev_cap) {
2881 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL);
2882
2883 if (!dev_cap) {
2884 err = -ENOMEM;
2885 goto err_fw;
2886 }
2887
2888 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
2889 if (err) {
2890 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
2891 goto err_fw;
2892 }
2893
2894 if (mlx4_check_dev_cap(dev, dev_cap, nvfs))
2895 goto err_fw;
2896
2897 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) {
2898 u64 dev_flags = mlx4_enable_sriov(dev, pdev,
2899 total_vfs,
2900 existing_vfs,
2901 reset_flow);
2902
2903 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
2904 dev->flags = dev_flags;
2905 if (!SRIOV_VALID_STATE(dev->flags)) {
2906 mlx4_err(dev, "Invalid SRIOV state\n");
2907 goto err_sriov;
2908 }
2909 err = mlx4_reset(dev);
2910 if (err) {
2911 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
2912 goto err_sriov;
2913 }
2914 goto slave_start;
2915 }
2916 } else {
2917 /* Legacy mode FW requires SRIOV to be enabled before
2918 * doing QUERY_DEV_CAP, since max_eq's value is different if
2919 * SRIOV is enabled.
2920 */
2921 memset(dev_cap, 0, sizeof(*dev_cap));
2922 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
2923 if (err) {
2924 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
2925 goto err_fw;
2926 }
2927
2928 if (mlx4_check_dev_cap(dev, dev_cap, nvfs))
2929 goto err_fw;
2930 }
2931 }
2932
2933 err = mlx4_init_hca(dev);
2934 if (err) {
2935 if (err == -EACCES) {
2936 /* Not primary Physical function
2937 * Running in slave mode */
2938 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
2939 /* We're not a PF */
2940 if (dev->flags & MLX4_FLAG_SRIOV) {
2941 if (!existing_vfs)
2942 pci_disable_sriov(pdev);
2943 if (mlx4_is_master(dev) && !reset_flow)
2944 atomic_dec(&pf_loading);
2945 dev->flags &= ~MLX4_FLAG_SRIOV;
2946 }
2947 if (!mlx4_is_slave(dev))
2948 mlx4_free_ownership(dev);
2949 dev->flags |= MLX4_FLAG_SLAVE;
2950 dev->flags &= ~MLX4_FLAG_MASTER;
2951 goto slave_start;
2952 } else
2953 goto err_fw;
2954 }
2955
2956 if (mlx4_is_master(dev) && (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) {
2957 u64 dev_flags = mlx4_enable_sriov(dev, pdev, total_vfs,
2958 existing_vfs, reset_flow);
2959
2960 if ((dev->flags ^ dev_flags) & (MLX4_FLAG_MASTER | MLX4_FLAG_SLAVE)) {
2961 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_VHCR);
2962 dev->flags = dev_flags;
2963 err = mlx4_cmd_init(dev);
2964 if (err) {
2965 /* Only VHCR is cleaned up, so could still
2966 * send FW commands
2967 */
2968 mlx4_err(dev, "Failed to init VHCR command interface, aborting\n");
2969 goto err_close;
2970 }
2971 } else {
2972 dev->flags = dev_flags;
2973 }
2974
2975 if (!SRIOV_VALID_STATE(dev->flags)) {
2976 mlx4_err(dev, "Invalid SRIOV state\n");
2977 goto err_close;
2978 }
2979 }
2980
2981 /* check if the device is functioning at its maximum possible speed.
2982 * No return code for this call, just warn the user in case of PCI
2983 * express device capabilities are under-satisfied by the bus.
2984 */
2985 if (!mlx4_is_slave(dev))
2986 mlx4_check_pcie_caps(dev);
2987
2988 /* In master functions, the communication channel must be initialized
2989 * after obtaining its address from fw */
2990 if (mlx4_is_master(dev)) {
2991 if (dev->caps.num_ports < 2 &&
2992 num_vfs_argc > 1) {
2993 err = -EINVAL;
2994 mlx4_err(dev,
2995 "Error: Trying to configure VFs on port 2, but HCA has only %d physical ports\n",
2996 dev->caps.num_ports);
2997 goto err_close;
2998 }
2999 memcpy(dev->persist->nvfs, nvfs, sizeof(dev->persist->nvfs));
3000
3001 for (i = 0;
3002 i < sizeof(dev->persist->nvfs)/
3003 sizeof(dev->persist->nvfs[0]); i++) {
3004 unsigned j;
3005
3006 for (j = 0; j < dev->persist->nvfs[i]; ++sum, ++j) {
3007 dev->dev_vfs[sum].min_port = i < 2 ? i + 1 : 1;
3008 dev->dev_vfs[sum].n_ports = i < 2 ? 1 :
3009 dev->caps.num_ports;
3010 }
3011 }
3012
3013 /* In master functions, the communication channel
3014 * must be initialized after obtaining its address from fw
3015 */
3016 err = mlx4_multi_func_init(dev);
3017 if (err) {
3018 mlx4_err(dev, "Failed to init master mfunc interface, aborting.\n");
3019 goto err_close;
3020 }
3021 }
3022
3023 err = mlx4_alloc_eq_table(dev);
3024 if (err)
3025 goto err_master_mfunc;
3026
3027 priv->msix_ctl.pool_bm = 0;
3028 mutex_init(&priv->msix_ctl.pool_lock);
3029
3030 mlx4_enable_msi_x(dev);
3031 if ((mlx4_is_mfunc(dev)) &&
3032 !(dev->flags & MLX4_FLAG_MSI_X)) {
3033 err = -ENOSYS;
3034 mlx4_err(dev, "INTx is not supported in multi-function mode, aborting\n");
3035 goto err_free_eq;
3036 }
3037
3038 if (!mlx4_is_slave(dev)) {
3039 err = mlx4_init_steering(dev);
3040 if (err)
3041 goto err_disable_msix;
3042 }
3043
3044 err = mlx4_setup_hca(dev);
3045 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
3046 !mlx4_is_mfunc(dev)) {
3047 dev->flags &= ~MLX4_FLAG_MSI_X;
3048 dev->caps.num_comp_vectors = 1;
3049 dev->caps.comp_pool = 0;
3050 pci_disable_msix(pdev);
3051 err = mlx4_setup_hca(dev);
3052 }
3053
3054 if (err)
3055 goto err_steer;
3056
3057 mlx4_init_quotas(dev);
3058 /* When PF resources are ready arm its comm channel to enable
3059 * getting commands
3060 */
3061 if (mlx4_is_master(dev)) {
3062 err = mlx4_ARM_COMM_CHANNEL(dev);
3063 if (err) {
3064 mlx4_err(dev, " Failed to arm comm channel eq: %x\n",
3065 err);
3066 goto err_steer;
3067 }
3068 }
3069
3070 for (port = 1; port <= dev->caps.num_ports; port++) {
3071 err = mlx4_init_port_info(dev, port);
3072 if (err)
3073 goto err_port;
3074 }
3075
3076 priv->v2p.port1 = 1;
3077 priv->v2p.port2 = 2;
3078
3079 err = mlx4_register_device(dev);
3080 if (err)
3081 goto err_port;
3082
3083 mlx4_request_modules(dev);
3084
3085 mlx4_sense_init(dev);
3086 mlx4_start_sense(dev);
3087
3088 priv->removed = 0;
3089
3090 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow)
3091 atomic_dec(&pf_loading);
3092
3093 kfree(dev_cap);
3094 return 0;
3095
3096 err_port:
3097 for (--port; port >= 1; --port)
3098 mlx4_cleanup_port_info(&priv->port[port]);
3099
3100 mlx4_cleanup_counters_table(dev);
3101 mlx4_cleanup_qp_table(dev);
3102 mlx4_cleanup_srq_table(dev);
3103 mlx4_cleanup_cq_table(dev);
3104 mlx4_cmd_use_polling(dev);
3105 mlx4_cleanup_eq_table(dev);
3106 mlx4_cleanup_mcg_table(dev);
3107 mlx4_cleanup_mr_table(dev);
3108 mlx4_cleanup_xrcd_table(dev);
3109 mlx4_cleanup_pd_table(dev);
3110 mlx4_cleanup_uar_table(dev);
3111
3112 err_steer:
3113 if (!mlx4_is_slave(dev))
3114 mlx4_clear_steering(dev);
3115
3116 err_disable_msix:
3117 if (dev->flags & MLX4_FLAG_MSI_X)
3118 pci_disable_msix(pdev);
3119
3120 err_free_eq:
3121 mlx4_free_eq_table(dev);
3122
3123 err_master_mfunc:
3124 if (mlx4_is_master(dev)) {
3125 mlx4_free_resource_tracker(dev, RES_TR_FREE_STRUCTS_ONLY);
3126 mlx4_multi_func_cleanup(dev);
3127 }
3128
3129 if (mlx4_is_slave(dev)) {
3130 kfree(dev->caps.qp0_qkey);
3131 kfree(dev->caps.qp0_tunnel);
3132 kfree(dev->caps.qp0_proxy);
3133 kfree(dev->caps.qp1_tunnel);
3134 kfree(dev->caps.qp1_proxy);
3135 }
3136
3137 err_close:
3138 mlx4_close_hca(dev);
3139
3140 err_fw:
3141 mlx4_close_fw(dev);
3142
3143 err_mfunc:
3144 if (mlx4_is_slave(dev))
3145 mlx4_multi_func_cleanup(dev);
3146
3147 err_cmd:
3148 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3149
3150 err_sriov:
3151 if (dev->flags & MLX4_FLAG_SRIOV && !existing_vfs) {
3152 pci_disable_sriov(pdev);
3153 dev->flags &= ~MLX4_FLAG_SRIOV;
3154 }
3155
3156 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow)
3157 atomic_dec(&pf_loading);
3158
3159 kfree(priv->dev.dev_vfs);
3160
3161 if (!mlx4_is_slave(dev))
3162 mlx4_free_ownership(dev);
3163
3164 kfree(dev_cap);
3165 return err;
3166 }
3167
3168 static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data,
3169 struct mlx4_priv *priv)
3170 {
3171 int err;
3172 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3173 int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3174 const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = {
3175 {2, 0, 0}, {0, 1, 2}, {0, 1, 2} };
3176 unsigned total_vfs = 0;
3177 unsigned int i;
3178
3179 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
3180
3181 err = pci_enable_device(pdev);
3182 if (err) {
3183 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
3184 return err;
3185 }
3186
3187 /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS
3188 * per port, we must limit the number of VFs to 63 (since their are
3189 * 128 MACs)
3190 */
3191 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) && i < num_vfs_argc;
3192 total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) {
3193 nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i];
3194 if (nvfs[i] < 0) {
3195 dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n");
3196 err = -EINVAL;
3197 goto err_disable_pdev;
3198 }
3199 }
3200 for (i = 0; i < sizeof(prb_vf)/sizeof(prb_vf[0]) && i < probe_vfs_argc;
3201 i++) {
3202 prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i];
3203 if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) {
3204 dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n");
3205 err = -EINVAL;
3206 goto err_disable_pdev;
3207 }
3208 }
3209 if (total_vfs >= MLX4_MAX_NUM_VF) {
3210 dev_err(&pdev->dev,
3211 "Requested more VF's (%d) than allowed (%d)\n",
3212 total_vfs, MLX4_MAX_NUM_VF - 1);
3213 err = -EINVAL;
3214 goto err_disable_pdev;
3215 }
3216
3217 for (i = 0; i < MLX4_MAX_PORTS; i++) {
3218 if (nvfs[i] + nvfs[2] >= MLX4_MAX_NUM_VF_P_PORT) {
3219 dev_err(&pdev->dev,
3220 "Requested more VF's (%d) for port (%d) than allowed (%d)\n",
3221 nvfs[i] + nvfs[2], i + 1,
3222 MLX4_MAX_NUM_VF_P_PORT - 1);
3223 err = -EINVAL;
3224 goto err_disable_pdev;
3225 }
3226 }
3227
3228 /* Check for BARs. */
3229 if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) &&
3230 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
3231 dev_err(&pdev->dev, "Missing DCS, aborting (driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n",
3232 pci_dev_data, pci_resource_flags(pdev, 0));
3233 err = -ENODEV;
3234 goto err_disable_pdev;
3235 }
3236 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
3237 dev_err(&pdev->dev, "Missing UAR, aborting\n");
3238 err = -ENODEV;
3239 goto err_disable_pdev;
3240 }
3241
3242 err = pci_request_regions(pdev, DRV_NAME);
3243 if (err) {
3244 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
3245 goto err_disable_pdev;
3246 }
3247
3248 pci_set_master(pdev);
3249
3250 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
3251 if (err) {
3252 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
3253 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3254 if (err) {
3255 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
3256 goto err_release_regions;
3257 }
3258 }
3259 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
3260 if (err) {
3261 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
3262 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3263 if (err) {
3264 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, aborting\n");
3265 goto err_release_regions;
3266 }
3267 }
3268
3269 /* Allow large DMA segments, up to the firmware limit of 1 GB */
3270 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
3271 /* Detect if this device is a virtual function */
3272 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
3273 /* When acting as pf, we normally skip vfs unless explicitly
3274 * requested to probe them.
3275 */
3276 if (total_vfs) {
3277 unsigned vfs_offset = 0;
3278
3279 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) &&
3280 vfs_offset + nvfs[i] < extended_func_num(pdev);
3281 vfs_offset += nvfs[i], i++)
3282 ;
3283 if (i == sizeof(nvfs)/sizeof(nvfs[0])) {
3284 err = -ENODEV;
3285 goto err_release_regions;
3286 }
3287 if ((extended_func_num(pdev) - vfs_offset)
3288 > prb_vf[i]) {
3289 dev_warn(&pdev->dev, "Skipping virtual function:%d\n",
3290 extended_func_num(pdev));
3291 err = -ENODEV;
3292 goto err_release_regions;
3293 }
3294 }
3295 }
3296
3297 err = mlx4_catas_init(&priv->dev);
3298 if (err)
3299 goto err_release_regions;
3300
3301 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 0);
3302 if (err)
3303 goto err_catas;
3304
3305 return 0;
3306
3307 err_catas:
3308 mlx4_catas_end(&priv->dev);
3309
3310 err_release_regions:
3311 pci_release_regions(pdev);
3312
3313 err_disable_pdev:
3314 pci_disable_device(pdev);
3315 pci_set_drvdata(pdev, NULL);
3316 return err;
3317 }
3318
3319 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
3320 {
3321 struct mlx4_priv *priv;
3322 struct mlx4_dev *dev;
3323 int ret;
3324
3325 printk_once(KERN_INFO "%s", mlx4_version);
3326
3327 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
3328 if (!priv)
3329 return -ENOMEM;
3330
3331 dev = &priv->dev;
3332 dev->persist = kzalloc(sizeof(*dev->persist), GFP_KERNEL);
3333 if (!dev->persist) {
3334 kfree(priv);
3335 return -ENOMEM;
3336 }
3337 dev->persist->pdev = pdev;
3338 dev->persist->dev = dev;
3339 pci_set_drvdata(pdev, dev->persist);
3340 priv->pci_dev_data = id->driver_data;
3341 mutex_init(&dev->persist->device_state_mutex);
3342 mutex_init(&dev->persist->interface_state_mutex);
3343
3344 ret = __mlx4_init_one(pdev, id->driver_data, priv);
3345 if (ret) {
3346 kfree(dev->persist);
3347 kfree(priv);
3348 } else {
3349 pci_save_state(pdev);
3350 }
3351
3352 return ret;
3353 }
3354
3355 static void mlx4_clean_dev(struct mlx4_dev *dev)
3356 {
3357 struct mlx4_dev_persistent *persist = dev->persist;
3358 struct mlx4_priv *priv = mlx4_priv(dev);
3359 unsigned long flags = (dev->flags & RESET_PERSIST_MASK_FLAGS);
3360
3361 memset(priv, 0, sizeof(*priv));
3362 priv->dev.persist = persist;
3363 priv->dev.flags = flags;
3364 }
3365
3366 static void mlx4_unload_one(struct pci_dev *pdev)
3367 {
3368 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3369 struct mlx4_dev *dev = persist->dev;
3370 struct mlx4_priv *priv = mlx4_priv(dev);
3371 int pci_dev_data;
3372 int p, i;
3373
3374 if (priv->removed)
3375 return;
3376
3377 /* saving current ports type for further use */
3378 for (i = 0; i < dev->caps.num_ports; i++) {
3379 dev->persist->curr_port_type[i] = dev->caps.port_type[i + 1];
3380 dev->persist->curr_port_poss_type[i] = dev->caps.
3381 possible_type[i + 1];
3382 }
3383
3384 pci_dev_data = priv->pci_dev_data;
3385
3386 mlx4_stop_sense(dev);
3387 mlx4_unregister_device(dev);
3388
3389 for (p = 1; p <= dev->caps.num_ports; p++) {
3390 mlx4_cleanup_port_info(&priv->port[p]);
3391 mlx4_CLOSE_PORT(dev, p);
3392 }
3393
3394 if (mlx4_is_master(dev))
3395 mlx4_free_resource_tracker(dev,
3396 RES_TR_FREE_SLAVES_ONLY);
3397
3398 mlx4_cleanup_counters_table(dev);
3399 mlx4_cleanup_qp_table(dev);
3400 mlx4_cleanup_srq_table(dev);
3401 mlx4_cleanup_cq_table(dev);
3402 mlx4_cmd_use_polling(dev);
3403 mlx4_cleanup_eq_table(dev);
3404 mlx4_cleanup_mcg_table(dev);
3405 mlx4_cleanup_mr_table(dev);
3406 mlx4_cleanup_xrcd_table(dev);
3407 mlx4_cleanup_pd_table(dev);
3408
3409 if (mlx4_is_master(dev))
3410 mlx4_free_resource_tracker(dev,
3411 RES_TR_FREE_STRUCTS_ONLY);
3412
3413 iounmap(priv->kar);
3414 mlx4_uar_free(dev, &priv->driver_uar);
3415 mlx4_cleanup_uar_table(dev);
3416 if (!mlx4_is_slave(dev))
3417 mlx4_clear_steering(dev);
3418 mlx4_free_eq_table(dev);
3419 if (mlx4_is_master(dev))
3420 mlx4_multi_func_cleanup(dev);
3421 mlx4_close_hca(dev);
3422 mlx4_close_fw(dev);
3423 if (mlx4_is_slave(dev))
3424 mlx4_multi_func_cleanup(dev);
3425 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3426
3427 if (dev->flags & MLX4_FLAG_MSI_X)
3428 pci_disable_msix(pdev);
3429
3430 if (!mlx4_is_slave(dev))
3431 mlx4_free_ownership(dev);
3432
3433 kfree(dev->caps.qp0_qkey);
3434 kfree(dev->caps.qp0_tunnel);
3435 kfree(dev->caps.qp0_proxy);
3436 kfree(dev->caps.qp1_tunnel);
3437 kfree(dev->caps.qp1_proxy);
3438 kfree(dev->dev_vfs);
3439
3440 mlx4_clean_dev(dev);
3441 priv->pci_dev_data = pci_dev_data;
3442 priv->removed = 1;
3443 }
3444
3445 static void mlx4_remove_one(struct pci_dev *pdev)
3446 {
3447 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3448 struct mlx4_dev *dev = persist->dev;
3449 struct mlx4_priv *priv = mlx4_priv(dev);
3450 int active_vfs = 0;
3451
3452 mutex_lock(&persist->interface_state_mutex);
3453 persist->interface_state |= MLX4_INTERFACE_STATE_DELETION;
3454 mutex_unlock(&persist->interface_state_mutex);
3455
3456 /* Disabling SR-IOV is not allowed while there are active vf's */
3457 if (mlx4_is_master(dev) && dev->flags & MLX4_FLAG_SRIOV) {
3458 active_vfs = mlx4_how_many_lives_vf(dev);
3459 if (active_vfs) {
3460 pr_warn("Removing PF when there are active VF's !!\n");
3461 pr_warn("Will not disable SR-IOV.\n");
3462 }
3463 }
3464
3465 /* device marked to be under deletion running now without the lock
3466 * letting other tasks to be terminated
3467 */
3468 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
3469 mlx4_unload_one(pdev);
3470 else
3471 mlx4_info(dev, "%s: interface is down\n", __func__);
3472 mlx4_catas_end(dev);
3473 if (dev->flags & MLX4_FLAG_SRIOV && !active_vfs) {
3474 mlx4_warn(dev, "Disabling SR-IOV\n");
3475 pci_disable_sriov(pdev);
3476 }
3477
3478 pci_release_regions(pdev);
3479 pci_disable_device(pdev);
3480 kfree(dev->persist);
3481 kfree(priv);
3482 pci_set_drvdata(pdev, NULL);
3483 }
3484
3485 static int restore_current_port_types(struct mlx4_dev *dev,
3486 enum mlx4_port_type *types,
3487 enum mlx4_port_type *poss_types)
3488 {
3489 struct mlx4_priv *priv = mlx4_priv(dev);
3490 int err, i;
3491
3492 mlx4_stop_sense(dev);
3493
3494 mutex_lock(&priv->port_mutex);
3495 for (i = 0; i < dev->caps.num_ports; i++)
3496 dev->caps.possible_type[i + 1] = poss_types[i];
3497 err = mlx4_change_port_types(dev, types);
3498 mlx4_start_sense(dev);
3499 mutex_unlock(&priv->port_mutex);
3500
3501 return err;
3502 }
3503
3504 int mlx4_restart_one(struct pci_dev *pdev)
3505 {
3506 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3507 struct mlx4_dev *dev = persist->dev;
3508 struct mlx4_priv *priv = mlx4_priv(dev);
3509 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3510 int pci_dev_data, err, total_vfs;
3511
3512 pci_dev_data = priv->pci_dev_data;
3513 total_vfs = dev->persist->num_vfs;
3514 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
3515
3516 mlx4_unload_one(pdev);
3517 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 1);
3518 if (err) {
3519 mlx4_err(dev, "%s: ERROR: mlx4_load_one failed, pci_name=%s, err=%d\n",
3520 __func__, pci_name(pdev), err);
3521 return err;
3522 }
3523
3524 err = restore_current_port_types(dev, dev->persist->curr_port_type,
3525 dev->persist->curr_port_poss_type);
3526 if (err)
3527 mlx4_err(dev, "could not restore original port types (%d)\n",
3528 err);
3529
3530 return err;
3531 }
3532
3533 static const struct pci_device_id mlx4_pci_table[] = {
3534 /* MT25408 "Hermon" SDR */
3535 { PCI_VDEVICE(MELLANOX, 0x6340), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3536 /* MT25408 "Hermon" DDR */
3537 { PCI_VDEVICE(MELLANOX, 0x634a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3538 /* MT25408 "Hermon" QDR */
3539 { PCI_VDEVICE(MELLANOX, 0x6354), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3540 /* MT25408 "Hermon" DDR PCIe gen2 */
3541 { PCI_VDEVICE(MELLANOX, 0x6732), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3542 /* MT25408 "Hermon" QDR PCIe gen2 */
3543 { PCI_VDEVICE(MELLANOX, 0x673c), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3544 /* MT25408 "Hermon" EN 10GigE */
3545 { PCI_VDEVICE(MELLANOX, 0x6368), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3546 /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
3547 { PCI_VDEVICE(MELLANOX, 0x6750), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3548 /* MT25458 ConnectX EN 10GBASE-T 10GigE */
3549 { PCI_VDEVICE(MELLANOX, 0x6372), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3550 /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
3551 { PCI_VDEVICE(MELLANOX, 0x675a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3552 /* MT26468 ConnectX EN 10GigE PCIe gen2*/
3553 { PCI_VDEVICE(MELLANOX, 0x6764), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3554 /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */
3555 { PCI_VDEVICE(MELLANOX, 0x6746), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3556 /* MT26478 ConnectX2 40GigE PCIe gen2 */
3557 { PCI_VDEVICE(MELLANOX, 0x676e), MLX4_PCI_DEV_FORCE_SENSE_PORT },
3558 /* MT25400 Family [ConnectX-2 Virtual Function] */
3559 { PCI_VDEVICE(MELLANOX, 0x1002), MLX4_PCI_DEV_IS_VF },
3560 /* MT27500 Family [ConnectX-3] */
3561 { PCI_VDEVICE(MELLANOX, 0x1003), 0 },
3562 /* MT27500 Family [ConnectX-3 Virtual Function] */
3563 { PCI_VDEVICE(MELLANOX, 0x1004), MLX4_PCI_DEV_IS_VF },
3564 { PCI_VDEVICE(MELLANOX, 0x1005), 0 }, /* MT27510 Family */
3565 { PCI_VDEVICE(MELLANOX, 0x1006), 0 }, /* MT27511 Family */
3566 { PCI_VDEVICE(MELLANOX, 0x1007), 0 }, /* MT27520 Family */
3567 { PCI_VDEVICE(MELLANOX, 0x1008), 0 }, /* MT27521 Family */
3568 { PCI_VDEVICE(MELLANOX, 0x1009), 0 }, /* MT27530 Family */
3569 { PCI_VDEVICE(MELLANOX, 0x100a), 0 }, /* MT27531 Family */
3570 { PCI_VDEVICE(MELLANOX, 0x100b), 0 }, /* MT27540 Family */
3571 { PCI_VDEVICE(MELLANOX, 0x100c), 0 }, /* MT27541 Family */
3572 { PCI_VDEVICE(MELLANOX, 0x100d), 0 }, /* MT27550 Family */
3573 { PCI_VDEVICE(MELLANOX, 0x100e), 0 }, /* MT27551 Family */
3574 { PCI_VDEVICE(MELLANOX, 0x100f), 0 }, /* MT27560 Family */
3575 { PCI_VDEVICE(MELLANOX, 0x1010), 0 }, /* MT27561 Family */
3576 { 0, }
3577 };
3578
3579 MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
3580
3581 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
3582 pci_channel_state_t state)
3583 {
3584 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3585
3586 mlx4_err(persist->dev, "mlx4_pci_err_detected was called\n");
3587 mlx4_enter_error_state(persist);
3588
3589 mutex_lock(&persist->interface_state_mutex);
3590 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
3591 mlx4_unload_one(pdev);
3592
3593 mutex_unlock(&persist->interface_state_mutex);
3594 if (state == pci_channel_io_perm_failure)
3595 return PCI_ERS_RESULT_DISCONNECT;
3596
3597 pci_disable_device(pdev);
3598 return PCI_ERS_RESULT_NEED_RESET;
3599 }
3600
3601 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
3602 {
3603 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3604 struct mlx4_dev *dev = persist->dev;
3605 struct mlx4_priv *priv = mlx4_priv(dev);
3606 int ret;
3607 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3608 int total_vfs;
3609
3610 mlx4_err(dev, "mlx4_pci_slot_reset was called\n");
3611 ret = pci_enable_device(pdev);
3612 if (ret) {
3613 mlx4_err(dev, "Can not re-enable device, ret=%d\n", ret);
3614 return PCI_ERS_RESULT_DISCONNECT;
3615 }
3616
3617 pci_set_master(pdev);
3618 pci_restore_state(pdev);
3619 pci_save_state(pdev);
3620
3621 total_vfs = dev->persist->num_vfs;
3622 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
3623
3624 mutex_lock(&persist->interface_state_mutex);
3625 if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) {
3626 ret = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, nvfs,
3627 priv, 1);
3628 if (ret) {
3629 mlx4_err(dev, "%s: mlx4_load_one failed, ret=%d\n",
3630 __func__, ret);
3631 goto end;
3632 }
3633
3634 ret = restore_current_port_types(dev, dev->persist->
3635 curr_port_type, dev->persist->
3636 curr_port_poss_type);
3637 if (ret)
3638 mlx4_err(dev, "could not restore original port types (%d)\n", ret);
3639 }
3640 end:
3641 mutex_unlock(&persist->interface_state_mutex);
3642
3643 return ret ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED;
3644 }
3645
3646 static void mlx4_shutdown(struct pci_dev *pdev)
3647 {
3648 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3649
3650 mlx4_info(persist->dev, "mlx4_shutdown was called\n");
3651 mutex_lock(&persist->interface_state_mutex);
3652 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
3653 mlx4_unload_one(pdev);
3654 mutex_unlock(&persist->interface_state_mutex);
3655 }
3656
3657 static const struct pci_error_handlers mlx4_err_handler = {
3658 .error_detected = mlx4_pci_err_detected,
3659 .slot_reset = mlx4_pci_slot_reset,
3660 };
3661
3662 static struct pci_driver mlx4_driver = {
3663 .name = DRV_NAME,
3664 .id_table = mlx4_pci_table,
3665 .probe = mlx4_init_one,
3666 .shutdown = mlx4_shutdown,
3667 .remove = mlx4_remove_one,
3668 .err_handler = &mlx4_err_handler,
3669 };
3670
3671 static int __init mlx4_verify_params(void)
3672 {
3673 if ((log_num_mac < 0) || (log_num_mac > 7)) {
3674 pr_warn("mlx4_core: bad num_mac: %d\n", log_num_mac);
3675 return -1;
3676 }
3677
3678 if (log_num_vlan != 0)
3679 pr_warn("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
3680 MLX4_LOG_NUM_VLANS);
3681
3682 if (use_prio != 0)
3683 pr_warn("mlx4_core: use_prio - obsolete module param, ignored\n");
3684
3685 if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
3686 pr_warn("mlx4_core: bad log_mtts_per_seg: %d\n",
3687 log_mtts_per_seg);
3688 return -1;
3689 }
3690
3691 /* Check if module param for ports type has legal combination */
3692 if (port_type_array[0] == false && port_type_array[1] == true) {
3693 pr_warn("Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
3694 port_type_array[0] = true;
3695 }
3696
3697 if (mlx4_log_num_mgm_entry_size < -7 ||
3698 (mlx4_log_num_mgm_entry_size > 0 &&
3699 (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE ||
3700 mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE))) {
3701 pr_warn("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not in legal range (-7..0 or %d..%d)\n",
3702 mlx4_log_num_mgm_entry_size,
3703 MLX4_MIN_MGM_LOG_ENTRY_SIZE,
3704 MLX4_MAX_MGM_LOG_ENTRY_SIZE);
3705 return -1;
3706 }
3707
3708 return 0;
3709 }
3710
3711 static int __init mlx4_init(void)
3712 {
3713 int ret;
3714
3715 if (mlx4_verify_params())
3716 return -EINVAL;
3717
3718
3719 mlx4_wq = create_singlethread_workqueue("mlx4");
3720 if (!mlx4_wq)
3721 return -ENOMEM;
3722
3723 ret = pci_register_driver(&mlx4_driver);
3724 if (ret < 0)
3725 destroy_workqueue(mlx4_wq);
3726 return ret < 0 ? ret : 0;
3727 }
3728
3729 static void __exit mlx4_cleanup(void)
3730 {
3731 pci_unregister_driver(&mlx4_driver);
3732 destroy_workqueue(mlx4_wq);
3733 }
3734
3735 module_init(mlx4_init);
3736 module_exit(mlx4_cleanup);
Linux kernel - Deliverables
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