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Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski...
[linux-2.6-block.git] / drivers / net / ethernet / mellanox / mlx4 / main.c
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1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved.
5 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36#include <linux/module.h>
37#include <linux/init.h>
38#include <linux/errno.h>
39#include <linux/pci.h>
40#include <linux/dma-mapping.h>
41#include <linux/slab.h>
42#include <linux/io-mapping.h>
43#include <linux/delay.h>
44#include <linux/kmod.h>
45#include <net/devlink.h>
46
47#include <linux/mlx4/device.h>
48#include <linux/mlx4/doorbell.h>
49
50#include "mlx4.h"
51#include "fw.h"
52#include "icm.h"
53
54MODULE_AUTHOR("Roland Dreier");
55MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver");
56MODULE_LICENSE("Dual BSD/GPL");
57MODULE_VERSION(DRV_VERSION);
58
59struct workqueue_struct *mlx4_wq;
60
61#ifdef CONFIG_MLX4_DEBUG
62
63int mlx4_debug_level = 0;
64module_param_named(debug_level, mlx4_debug_level, int, 0644);
65MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
66
67#endif /* CONFIG_MLX4_DEBUG */
68
69#ifdef CONFIG_PCI_MSI
70
71static int msi_x = 1;
72module_param(msi_x, int, 0444);
73MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
74
75#else /* CONFIG_PCI_MSI */
76
77#define msi_x (0)
78
79#endif /* CONFIG_PCI_MSI */
80
81static uint8_t num_vfs[3] = {0, 0, 0};
82static int num_vfs_argc;
83module_param_array(num_vfs, byte , &num_vfs_argc, 0444);
84MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0\n"
85 "num_vfs=port1,port2,port1+2");
86
87static uint8_t probe_vf[3] = {0, 0, 0};
88static int probe_vfs_argc;
89module_param_array(probe_vf, byte, &probe_vfs_argc, 0444);
90MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)\n"
91 "probe_vf=port1,port2,port1+2");
92
93int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
94module_param_named(log_num_mgm_entry_size,
95 mlx4_log_num_mgm_entry_size, int, 0444);
96MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num"
97 " of qp per mcg, for example:"
98 " 10 gives 248.range: 7 <="
99 " log_num_mgm_entry_size <= 12."
100 " To activate device managed"
101 " flow steering when available, set to -1");
102
103static bool enable_64b_cqe_eqe = true;
104module_param(enable_64b_cqe_eqe, bool, 0444);
105MODULE_PARM_DESC(enable_64b_cqe_eqe,
106 "Enable 64 byte CQEs/EQEs when the FW supports this (default: True)");
107
108static bool enable_4k_uar;
109module_param(enable_4k_uar, bool, 0444);
110MODULE_PARM_DESC(enable_4k_uar,
111 "Enable using 4K UAR. Should not be enabled if have VFs which do not support 4K UARs (default: false)");
112
113#define PF_CONTEXT_BEHAVIOUR_MASK (MLX4_FUNC_CAP_64B_EQE_CQE | \
114 MLX4_FUNC_CAP_EQE_CQE_STRIDE | \
115 MLX4_FUNC_CAP_DMFS_A0_STATIC)
116
117#define RESET_PERSIST_MASK_FLAGS (MLX4_FLAG_SRIOV)
118
119static char mlx4_version[] =
120 DRV_NAME ": Mellanox ConnectX core driver v"
121 DRV_VERSION " (" DRV_RELDATE ")\n";
122
123static struct mlx4_profile default_profile = {
124 .num_qp = 1 << 18,
125 .num_srq = 1 << 16,
126 .rdmarc_per_qp = 1 << 4,
127 .num_cq = 1 << 16,
128 .num_mcg = 1 << 13,
129 .num_mpt = 1 << 19,
130 .num_mtt = 1 << 20, /* It is really num mtt segements */
131};
132
133static struct mlx4_profile low_mem_profile = {
134 .num_qp = 1 << 17,
135 .num_srq = 1 << 6,
136 .rdmarc_per_qp = 1 << 4,
137 .num_cq = 1 << 8,
138 .num_mcg = 1 << 8,
139 .num_mpt = 1 << 9,
140 .num_mtt = 1 << 7,
141};
142
143static int log_num_mac = 7;
144module_param_named(log_num_mac, log_num_mac, int, 0444);
145MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
146
147static int log_num_vlan;
148module_param_named(log_num_vlan, log_num_vlan, int, 0444);
149MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
150/* Log2 max number of VLANs per ETH port (0-7) */
151#define MLX4_LOG_NUM_VLANS 7
152#define MLX4_MIN_LOG_NUM_VLANS 0
153#define MLX4_MIN_LOG_NUM_MAC 1
154
155static bool use_prio;
156module_param_named(use_prio, use_prio, bool, 0444);
157MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports (deprecated)");
158
159int log_mtts_per_seg = ilog2(MLX4_MTT_ENTRY_PER_SEG);
160module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444);
161MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment (1-7)");
162
163static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE};
164static int arr_argc = 2;
165module_param_array(port_type_array, int, &arr_argc, 0444);
166MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default "
167 "1 for IB, 2 for Ethernet");
168
169struct mlx4_port_config {
170 struct list_head list;
171 enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
172 struct pci_dev *pdev;
173};
174
175static atomic_t pf_loading = ATOMIC_INIT(0);
176
177static inline void mlx4_set_num_reserved_uars(struct mlx4_dev *dev,
178 struct mlx4_dev_cap *dev_cap)
179{
180 /* The reserved_uars is calculated by system page size unit.
181 * Therefore, adjustment is added when the uar page size is less
182 * than the system page size
183 */
184 dev->caps.reserved_uars =
185 max_t(int,
186 mlx4_get_num_reserved_uar(dev),
187 dev_cap->reserved_uars /
188 (1 << (PAGE_SHIFT - dev->uar_page_shift)));
189}
190
191int mlx4_check_port_params(struct mlx4_dev *dev,
192 enum mlx4_port_type *port_type)
193{
194 int i;
195
196 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
197 for (i = 0; i < dev->caps.num_ports - 1; i++) {
198 if (port_type[i] != port_type[i + 1]) {
199 mlx4_err(dev, "Only same port types supported on this HCA, aborting\n");
200 return -EINVAL;
201 }
202 }
203 }
204
205 for (i = 0; i < dev->caps.num_ports; i++) {
206 if (!(port_type[i] & dev->caps.supported_type[i+1])) {
207 mlx4_err(dev, "Requested port type for port %d is not supported on this HCA\n",
208 i + 1);
209 return -EINVAL;
210 }
211 }
212 return 0;
213}
214
215static void mlx4_set_port_mask(struct mlx4_dev *dev)
216{
217 int i;
218
219 for (i = 1; i <= dev->caps.num_ports; ++i)
220 dev->caps.port_mask[i] = dev->caps.port_type[i];
221}
222
223enum {
224 MLX4_QUERY_FUNC_NUM_SYS_EQS = 1 << 0,
225};
226
227static int mlx4_query_func(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
228{
229 int err = 0;
230 struct mlx4_func func;
231
232 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) {
233 err = mlx4_QUERY_FUNC(dev, &func, 0);
234 if (err) {
235 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
236 return err;
237 }
238 dev_cap->max_eqs = func.max_eq;
239 dev_cap->reserved_eqs = func.rsvd_eqs;
240 dev_cap->reserved_uars = func.rsvd_uars;
241 err |= MLX4_QUERY_FUNC_NUM_SYS_EQS;
242 }
243 return err;
244}
245
246static void mlx4_enable_cqe_eqe_stride(struct mlx4_dev *dev)
247{
248 struct mlx4_caps *dev_cap = &dev->caps;
249
250 /* FW not supporting or cancelled by user */
251 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_EQE_STRIDE) ||
252 !(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_CQE_STRIDE))
253 return;
254
255 /* Must have 64B CQE_EQE enabled by FW to use bigger stride
256 * When FW has NCSI it may decide not to report 64B CQE/EQEs
257 */
258 if (!(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_EQE) ||
259 !(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_CQE)) {
260 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
261 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
262 return;
263 }
264
265 if (cache_line_size() == 128 || cache_line_size() == 256) {
266 mlx4_dbg(dev, "Enabling CQE stride cacheLine supported\n");
267 /* Changing the real data inside CQE size to 32B */
268 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
269 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
270
271 if (mlx4_is_master(dev))
272 dev_cap->function_caps |= MLX4_FUNC_CAP_EQE_CQE_STRIDE;
273 } else {
274 if (cache_line_size() != 32 && cache_line_size() != 64)
275 mlx4_dbg(dev, "Disabling CQE stride, cacheLine size unsupported\n");
276 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
277 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
278 }
279}
280
281static int _mlx4_dev_port(struct mlx4_dev *dev, int port,
282 struct mlx4_port_cap *port_cap)
283{
284 dev->caps.vl_cap[port] = port_cap->max_vl;
285 dev->caps.ib_mtu_cap[port] = port_cap->ib_mtu;
286 dev->phys_caps.gid_phys_table_len[port] = port_cap->max_gids;
287 dev->phys_caps.pkey_phys_table_len[port] = port_cap->max_pkeys;
288 /* set gid and pkey table operating lengths by default
289 * to non-sriov values
290 */
291 dev->caps.gid_table_len[port] = port_cap->max_gids;
292 dev->caps.pkey_table_len[port] = port_cap->max_pkeys;
293 dev->caps.port_width_cap[port] = port_cap->max_port_width;
294 dev->caps.eth_mtu_cap[port] = port_cap->eth_mtu;
295 dev->caps.def_mac[port] = port_cap->def_mac;
296 dev->caps.supported_type[port] = port_cap->supported_port_types;
297 dev->caps.suggested_type[port] = port_cap->suggested_type;
298 dev->caps.default_sense[port] = port_cap->default_sense;
299 dev->caps.trans_type[port] = port_cap->trans_type;
300 dev->caps.vendor_oui[port] = port_cap->vendor_oui;
301 dev->caps.wavelength[port] = port_cap->wavelength;
302 dev->caps.trans_code[port] = port_cap->trans_code;
303
304 return 0;
305}
306
307static int mlx4_dev_port(struct mlx4_dev *dev, int port,
308 struct mlx4_port_cap *port_cap)
309{
310 int err = 0;
311
312 err = mlx4_QUERY_PORT(dev, port, port_cap);
313
314 if (err)
315 mlx4_err(dev, "QUERY_PORT command failed.\n");
316
317 return err;
318}
319
320static inline void mlx4_enable_ignore_fcs(struct mlx4_dev *dev)
321{
322 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS))
323 return;
324
325 if (mlx4_is_mfunc(dev)) {
326 mlx4_dbg(dev, "SRIOV mode - Disabling Ignore FCS");
327 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
328 return;
329 }
330
331 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) {
332 mlx4_dbg(dev,
333 "Keep FCS is not supported - Disabling Ignore FCS");
334 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
335 return;
336 }
337}
338
339#define MLX4_A0_STEERING_TABLE_SIZE 256
340static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
341{
342 int err;
343 int i;
344
345 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
346 if (err) {
347 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
348 return err;
349 }
350 mlx4_dev_cap_dump(dev, dev_cap);
351
352 if (dev_cap->min_page_sz > PAGE_SIZE) {
353 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
354 dev_cap->min_page_sz, PAGE_SIZE);
355 return -ENODEV;
356 }
357 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
358 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
359 dev_cap->num_ports, MLX4_MAX_PORTS);
360 return -ENODEV;
361 }
362
363 if (dev_cap->uar_size > pci_resource_len(dev->persist->pdev, 2)) {
364 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
365 dev_cap->uar_size,
366 (unsigned long long)
367 pci_resource_len(dev->persist->pdev, 2));
368 return -ENODEV;
369 }
370
371 dev->caps.num_ports = dev_cap->num_ports;
372 dev->caps.num_sys_eqs = dev_cap->num_sys_eqs;
373 dev->phys_caps.num_phys_eqs = dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS ?
374 dev->caps.num_sys_eqs :
375 MLX4_MAX_EQ_NUM;
376 for (i = 1; i <= dev->caps.num_ports; ++i) {
377 err = _mlx4_dev_port(dev, i, dev_cap->port_cap + i);
378 if (err) {
379 mlx4_err(dev, "QUERY_PORT command failed, aborting\n");
380 return err;
381 }
382 }
383
384 dev->caps.uar_page_size = PAGE_SIZE;
385 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
386 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
387 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
388 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
389 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
390 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
391 dev->caps.max_wqes = dev_cap->max_qp_sz;
392 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
393 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
394 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
395 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
396 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
397 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
398 /*
399 * Subtract 1 from the limit because we need to allocate a
400 * spare CQE so the HCA HW can tell the difference between an
401 * empty CQ and a full CQ.
402 */
403 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
404 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
405 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
406 dev->caps.reserved_mtts = dev_cap->reserved_mtts;
407 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
408
409 dev->caps.reserved_pds = dev_cap->reserved_pds;
410 dev->caps.reserved_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
411 dev_cap->reserved_xrcds : 0;
412 dev->caps.max_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ?
413 dev_cap->max_xrcds : 0;
414 dev->caps.mtt_entry_sz = dev_cap->mtt_entry_sz;
415
416 dev->caps.max_msg_sz = dev_cap->max_msg_sz;
417 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
418 dev->caps.flags = dev_cap->flags;
419 dev->caps.flags2 = dev_cap->flags2;
420 dev->caps.bmme_flags = dev_cap->bmme_flags;
421 dev->caps.reserved_lkey = dev_cap->reserved_lkey;
422 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
423 dev->caps.max_gso_sz = dev_cap->max_gso_sz;
424 dev->caps.max_rss_tbl_sz = dev_cap->max_rss_tbl_sz;
425
426 /* Save uar page shift */
427 if (!mlx4_is_slave(dev)) {
428 /* Virtual PCI function needs to determine UAR page size from
429 * firmware. Only master PCI function can set the uar page size
430 */
431 if (enable_4k_uar)
432 dev->uar_page_shift = DEFAULT_UAR_PAGE_SHIFT;
433 else
434 dev->uar_page_shift = PAGE_SHIFT;
435
436 mlx4_set_num_reserved_uars(dev, dev_cap);
437 }
438
439 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN) {
440 struct mlx4_init_hca_param hca_param;
441
442 memset(&hca_param, 0, sizeof(hca_param));
443 err = mlx4_QUERY_HCA(dev, &hca_param);
444 /* Turn off PHV_EN flag in case phv_check_en is set.
445 * phv_check_en is a HW check that parse the packet and verify
446 * phv bit was reported correctly in the wqe. To allow QinQ
447 * PHV_EN flag should be set and phv_check_en must be cleared
448 * otherwise QinQ packets will be drop by the HW.
449 */
450 if (err || hca_param.phv_check_en)
451 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_PHV_EN;
452 }
453
454 /* Sense port always allowed on supported devices for ConnectX-1 and -2 */
455 if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT)
456 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
457 /* Don't do sense port on multifunction devices (for now at least) */
458 if (mlx4_is_mfunc(dev))
459 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT;
460
461 if (mlx4_low_memory_profile()) {
462 dev->caps.log_num_macs = MLX4_MIN_LOG_NUM_MAC;
463 dev->caps.log_num_vlans = MLX4_MIN_LOG_NUM_VLANS;
464 } else {
465 dev->caps.log_num_macs = log_num_mac;
466 dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS;
467 }
468
469 for (i = 1; i <= dev->caps.num_ports; ++i) {
470 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE;
471 if (dev->caps.supported_type[i]) {
472 /* if only ETH is supported - assign ETH */
473 if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH)
474 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
475 /* if only IB is supported, assign IB */
476 else if (dev->caps.supported_type[i] ==
477 MLX4_PORT_TYPE_IB)
478 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
479 else {
480 /* if IB and ETH are supported, we set the port
481 * type according to user selection of port type;
482 * if user selected none, take the FW hint */
483 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE)
484 dev->caps.port_type[i] = dev->caps.suggested_type[i] ?
485 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB;
486 else
487 dev->caps.port_type[i] = port_type_array[i - 1];
488 }
489 }
490 /*
491 * Link sensing is allowed on the port if 3 conditions are true:
492 * 1. Both protocols are supported on the port.
493 * 2. Different types are supported on the port
494 * 3. FW declared that it supports link sensing
495 */
496 mlx4_priv(dev)->sense.sense_allowed[i] =
497 ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) &&
498 (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
499 (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT));
500
501 /*
502 * If "default_sense" bit is set, we move the port to "AUTO" mode
503 * and perform sense_port FW command to try and set the correct
504 * port type from beginning
505 */
506 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) {
507 enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE;
508 dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO;
509 mlx4_SENSE_PORT(dev, i, &sensed_port);
510 if (sensed_port != MLX4_PORT_TYPE_NONE)
511 dev->caps.port_type[i] = sensed_port;
512 } else {
513 dev->caps.possible_type[i] = dev->caps.port_type[i];
514 }
515
516 if (dev->caps.log_num_macs > dev_cap->port_cap[i].log_max_macs) {
517 dev->caps.log_num_macs = dev_cap->port_cap[i].log_max_macs;
518 mlx4_warn(dev, "Requested number of MACs is too much for port %d, reducing to %d\n",
519 i, 1 << dev->caps.log_num_macs);
520 }
521 if (dev->caps.log_num_vlans > dev_cap->port_cap[i].log_max_vlans) {
522 dev->caps.log_num_vlans = dev_cap->port_cap[i].log_max_vlans;
523 mlx4_warn(dev, "Requested number of VLANs is too much for port %d, reducing to %d\n",
524 i, 1 << dev->caps.log_num_vlans);
525 }
526 }
527
528 if (mlx4_is_master(dev) && (dev->caps.num_ports == 2) &&
529 (port_type_array[0] == MLX4_PORT_TYPE_IB) &&
530 (port_type_array[1] == MLX4_PORT_TYPE_ETH)) {
531 mlx4_warn(dev,
532 "Granular QoS per VF not supported with IB/Eth configuration\n");
533 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_QOS_VPP;
534 }
535
536 dev->caps.max_counters = dev_cap->max_counters;
537
538 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
539 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
540 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
541 (1 << dev->caps.log_num_macs) *
542 (1 << dev->caps.log_num_vlans) *
543 dev->caps.num_ports;
544 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
545
546 if (dev_cap->dmfs_high_rate_qpn_base > 0 &&
547 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN)
548 dev->caps.dmfs_high_rate_qpn_base = dev_cap->dmfs_high_rate_qpn_base;
549 else
550 dev->caps.dmfs_high_rate_qpn_base =
551 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
552
553 if (dev_cap->dmfs_high_rate_qpn_range > 0 &&
554 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN) {
555 dev->caps.dmfs_high_rate_qpn_range = dev_cap->dmfs_high_rate_qpn_range;
556 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DEFAULT;
557 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_FS_A0;
558 } else {
559 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_NOT_SUPPORTED;
560 dev->caps.dmfs_high_rate_qpn_base =
561 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
562 dev->caps.dmfs_high_rate_qpn_range = MLX4_A0_STEERING_TABLE_SIZE;
563 }
564
565 dev->caps.rl_caps = dev_cap->rl_caps;
566
567 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_RSS_RAW_ETH] =
568 dev->caps.dmfs_high_rate_qpn_range;
569
570 dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
571 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
572 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
573 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
574
575 dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0;
576
577 if (!enable_64b_cqe_eqe && !mlx4_is_slave(dev)) {
578 if (dev_cap->flags &
579 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) {
580 mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n");
581 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE;
582 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE;
583 }
584
585 if (dev_cap->flags2 &
586 (MLX4_DEV_CAP_FLAG2_CQE_STRIDE |
587 MLX4_DEV_CAP_FLAG2_EQE_STRIDE)) {
588 mlx4_warn(dev, "Disabling EQE/CQE stride per user request\n");
589 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE;
590 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE;
591 }
592 }
593
594 if ((dev->caps.flags &
595 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) &&
596 mlx4_is_master(dev))
597 dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE;
598
599 if (!mlx4_is_slave(dev)) {
600 mlx4_enable_cqe_eqe_stride(dev);
601 dev->caps.alloc_res_qp_mask =
602 (dev->caps.bf_reg_size ? MLX4_RESERVE_ETH_BF_QP : 0) |
603 MLX4_RESERVE_A0_QP;
604
605 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) &&
606 dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
607 mlx4_warn(dev, "Old device ETS support detected\n");
608 mlx4_warn(dev, "Consider upgrading device FW.\n");
609 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_ETS_CFG;
610 }
611
612 } else {
613 dev->caps.alloc_res_qp_mask = 0;
614 }
615
616 mlx4_enable_ignore_fcs(dev);
617
618 return 0;
619}
620
621static int mlx4_get_pcie_dev_link_caps(struct mlx4_dev *dev,
622 enum pci_bus_speed *speed,
623 enum pcie_link_width *width)
624{
625 u32 lnkcap1, lnkcap2;
626 int err1, err2;
627
628#define PCIE_MLW_CAP_SHIFT 4 /* start of MLW mask in link capabilities */
629
630 *speed = PCI_SPEED_UNKNOWN;
631 *width = PCIE_LNK_WIDTH_UNKNOWN;
632
633 err1 = pcie_capability_read_dword(dev->persist->pdev, PCI_EXP_LNKCAP,
634 &lnkcap1);
635 err2 = pcie_capability_read_dword(dev->persist->pdev, PCI_EXP_LNKCAP2,
636 &lnkcap2);
637 if (!err2 && lnkcap2) { /* PCIe r3.0-compliant */
638 if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB)
639 *speed = PCIE_SPEED_8_0GT;
640 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB)
641 *speed = PCIE_SPEED_5_0GT;
642 else if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB)
643 *speed = PCIE_SPEED_2_5GT;
644 }
645 if (!err1) {
646 *width = (lnkcap1 & PCI_EXP_LNKCAP_MLW) >> PCIE_MLW_CAP_SHIFT;
647 if (!lnkcap2) { /* pre-r3.0 */
648 if (lnkcap1 & PCI_EXP_LNKCAP_SLS_5_0GB)
649 *speed = PCIE_SPEED_5_0GT;
650 else if (lnkcap1 & PCI_EXP_LNKCAP_SLS_2_5GB)
651 *speed = PCIE_SPEED_2_5GT;
652 }
653 }
654
655 if (*speed == PCI_SPEED_UNKNOWN || *width == PCIE_LNK_WIDTH_UNKNOWN) {
656 return err1 ? err1 :
657 err2 ? err2 : -EINVAL;
658 }
659 return 0;
660}
661
662static void mlx4_check_pcie_caps(struct mlx4_dev *dev)
663{
664 enum pcie_link_width width, width_cap;
665 enum pci_bus_speed speed, speed_cap;
666 int err;
667
668#define PCIE_SPEED_STR(speed) \
669 (speed == PCIE_SPEED_8_0GT ? "8.0GT/s" : \
670 speed == PCIE_SPEED_5_0GT ? "5.0GT/s" : \
671 speed == PCIE_SPEED_2_5GT ? "2.5GT/s" : \
672 "Unknown")
673
674 err = mlx4_get_pcie_dev_link_caps(dev, &speed_cap, &width_cap);
675 if (err) {
676 mlx4_warn(dev,
677 "Unable to determine PCIe device BW capabilities\n");
678 return;
679 }
680
681 err = pcie_get_minimum_link(dev->persist->pdev, &speed, &width);
682 if (err || speed == PCI_SPEED_UNKNOWN ||
683 width == PCIE_LNK_WIDTH_UNKNOWN) {
684 mlx4_warn(dev,
685 "Unable to determine PCI device chain minimum BW\n");
686 return;
687 }
688
689 if (width != width_cap || speed != speed_cap)
690 mlx4_warn(dev,
691 "PCIe BW is different than device's capability\n");
692
693 mlx4_info(dev, "PCIe link speed is %s, device supports %s\n",
694 PCIE_SPEED_STR(speed), PCIE_SPEED_STR(speed_cap));
695 mlx4_info(dev, "PCIe link width is x%d, device supports x%d\n",
696 width, width_cap);
697 return;
698}
699
700/*The function checks if there are live vf, return the num of them*/
701static int mlx4_how_many_lives_vf(struct mlx4_dev *dev)
702{
703 struct mlx4_priv *priv = mlx4_priv(dev);
704 struct mlx4_slave_state *s_state;
705 int i;
706 int ret = 0;
707
708 for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) {
709 s_state = &priv->mfunc.master.slave_state[i];
710 if (s_state->active && s_state->last_cmd !=
711 MLX4_COMM_CMD_RESET) {
712 mlx4_warn(dev, "%s: slave: %d is still active\n",
713 __func__, i);
714 ret++;
715 }
716 }
717 return ret;
718}
719
720int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey)
721{
722 u32 qk = MLX4_RESERVED_QKEY_BASE;
723
724 if (qpn >= dev->phys_caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX ||
725 qpn < dev->phys_caps.base_proxy_sqpn)
726 return -EINVAL;
727
728 if (qpn >= dev->phys_caps.base_tunnel_sqpn)
729 /* tunnel qp */
730 qk += qpn - dev->phys_caps.base_tunnel_sqpn;
731 else
732 qk += qpn - dev->phys_caps.base_proxy_sqpn;
733 *qkey = qk;
734 return 0;
735}
736EXPORT_SYMBOL(mlx4_get_parav_qkey);
737
738void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val)
739{
740 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
741
742 if (!mlx4_is_master(dev))
743 return;
744
745 priv->virt2phys_pkey[slave][port - 1][i] = val;
746}
747EXPORT_SYMBOL(mlx4_sync_pkey_table);
748
749void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid)
750{
751 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
752
753 if (!mlx4_is_master(dev))
754 return;
755
756 priv->slave_node_guids[slave] = guid;
757}
758EXPORT_SYMBOL(mlx4_put_slave_node_guid);
759
760__be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave)
761{
762 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev);
763
764 if (!mlx4_is_master(dev))
765 return 0;
766
767 return priv->slave_node_guids[slave];
768}
769EXPORT_SYMBOL(mlx4_get_slave_node_guid);
770
771int mlx4_is_slave_active(struct mlx4_dev *dev, int slave)
772{
773 struct mlx4_priv *priv = mlx4_priv(dev);
774 struct mlx4_slave_state *s_slave;
775
776 if (!mlx4_is_master(dev))
777 return 0;
778
779 s_slave = &priv->mfunc.master.slave_state[slave];
780 return !!s_slave->active;
781}
782EXPORT_SYMBOL(mlx4_is_slave_active);
783
784static void slave_adjust_steering_mode(struct mlx4_dev *dev,
785 struct mlx4_dev_cap *dev_cap,
786 struct mlx4_init_hca_param *hca_param)
787{
788 dev->caps.steering_mode = hca_param->steering_mode;
789 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
790 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
791 dev->caps.fs_log_max_ucast_qp_range_size =
792 dev_cap->fs_log_max_ucast_qp_range_size;
793 } else
794 dev->caps.num_qp_per_mgm =
795 4 * ((1 << hca_param->log_mc_entry_sz)/16 - 2);
796
797 mlx4_dbg(dev, "Steering mode is: %s\n",
798 mlx4_steering_mode_str(dev->caps.steering_mode));
799}
800
801static int mlx4_slave_cap(struct mlx4_dev *dev)
802{
803 int err;
804 u32 page_size;
805 struct mlx4_dev_cap dev_cap;
806 struct mlx4_func_cap func_cap;
807 struct mlx4_init_hca_param hca_param;
808 u8 i;
809
810 memset(&hca_param, 0, sizeof(hca_param));
811 err = mlx4_QUERY_HCA(dev, &hca_param);
812 if (err) {
813 mlx4_err(dev, "QUERY_HCA command failed, aborting\n");
814 return err;
815 }
816
817 /* fail if the hca has an unknown global capability
818 * at this time global_caps should be always zeroed
819 */
820 if (hca_param.global_caps) {
821 mlx4_err(dev, "Unknown hca global capabilities\n");
822 return -ENOSYS;
823 }
824
825 mlx4_log_num_mgm_entry_size = hca_param.log_mc_entry_sz;
826
827 dev->caps.hca_core_clock = hca_param.hca_core_clock;
828
829 memset(&dev_cap, 0, sizeof(dev_cap));
830 dev->caps.max_qp_dest_rdma = 1 << hca_param.log_rd_per_qp;
831 err = mlx4_dev_cap(dev, &dev_cap);
832 if (err) {
833 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
834 return err;
835 }
836
837 err = mlx4_QUERY_FW(dev);
838 if (err)
839 mlx4_err(dev, "QUERY_FW command failed: could not get FW version\n");
840
841 page_size = ~dev->caps.page_size_cap + 1;
842 mlx4_warn(dev, "HCA minimum page size:%d\n", page_size);
843 if (page_size > PAGE_SIZE) {
844 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n",
845 page_size, PAGE_SIZE);
846 return -ENODEV;
847 }
848
849 /* Set uar_page_shift for VF */
850 dev->uar_page_shift = hca_param.uar_page_sz + 12;
851
852 /* Make sure the master uar page size is valid */
853 if (dev->uar_page_shift > PAGE_SHIFT) {
854 mlx4_err(dev,
855 "Invalid configuration: uar page size is larger than system page size\n");
856 return -ENODEV;
857 }
858
859 /* Set reserved_uars based on the uar_page_shift */
860 mlx4_set_num_reserved_uars(dev, &dev_cap);
861
862 /* Although uar page size in FW differs from system page size,
863 * upper software layers (mlx4_ib, mlx4_en and part of mlx4_core)
864 * still works with assumption that uar page size == system page size
865 */
866 dev->caps.uar_page_size = PAGE_SIZE;
867
868 memset(&func_cap, 0, sizeof(func_cap));
869 err = mlx4_QUERY_FUNC_CAP(dev, 0, &func_cap);
870 if (err) {
871 mlx4_err(dev, "QUERY_FUNC_CAP general command failed, aborting (%d)\n",
872 err);
873 return err;
874 }
875
876 if ((func_cap.pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) !=
877 PF_CONTEXT_BEHAVIOUR_MASK) {
878 mlx4_err(dev, "Unknown pf context behaviour %x known flags %x\n",
879 func_cap.pf_context_behaviour, PF_CONTEXT_BEHAVIOUR_MASK);
880 return -ENOSYS;
881 }
882
883 dev->caps.num_ports = func_cap.num_ports;
884 dev->quotas.qp = func_cap.qp_quota;
885 dev->quotas.srq = func_cap.srq_quota;
886 dev->quotas.cq = func_cap.cq_quota;
887 dev->quotas.mpt = func_cap.mpt_quota;
888 dev->quotas.mtt = func_cap.mtt_quota;
889 dev->caps.num_qps = 1 << hca_param.log_num_qps;
890 dev->caps.num_srqs = 1 << hca_param.log_num_srqs;
891 dev->caps.num_cqs = 1 << hca_param.log_num_cqs;
892 dev->caps.num_mpts = 1 << hca_param.log_mpt_sz;
893 dev->caps.num_eqs = func_cap.max_eq;
894 dev->caps.reserved_eqs = func_cap.reserved_eq;
895 dev->caps.reserved_lkey = func_cap.reserved_lkey;
896 dev->caps.num_pds = MLX4_NUM_PDS;
897 dev->caps.num_mgms = 0;
898 dev->caps.num_amgms = 0;
899
900 if (dev->caps.num_ports > MLX4_MAX_PORTS) {
901 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n",
902 dev->caps.num_ports, MLX4_MAX_PORTS);
903 return -ENODEV;
904 }
905
906 mlx4_replace_zero_macs(dev);
907
908 dev->caps.qp0_qkey = kcalloc(dev->caps.num_ports, sizeof(u32), GFP_KERNEL);
909 dev->caps.qp0_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
910 dev->caps.qp0_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
911 dev->caps.qp1_tunnel = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
912 dev->caps.qp1_proxy = kcalloc(dev->caps.num_ports, sizeof (u32), GFP_KERNEL);
913
914 if (!dev->caps.qp0_tunnel || !dev->caps.qp0_proxy ||
915 !dev->caps.qp1_tunnel || !dev->caps.qp1_proxy ||
916 !dev->caps.qp0_qkey) {
917 err = -ENOMEM;
918 goto err_mem;
919 }
920
921 for (i = 1; i <= dev->caps.num_ports; ++i) {
922 err = mlx4_QUERY_FUNC_CAP(dev, i, &func_cap);
923 if (err) {
924 mlx4_err(dev, "QUERY_FUNC_CAP port command failed for port %d, aborting (%d)\n",
925 i, err);
926 goto err_mem;
927 }
928 dev->caps.qp0_qkey[i - 1] = func_cap.qp0_qkey;
929 dev->caps.qp0_tunnel[i - 1] = func_cap.qp0_tunnel_qpn;
930 dev->caps.qp0_proxy[i - 1] = func_cap.qp0_proxy_qpn;
931 dev->caps.qp1_tunnel[i - 1] = func_cap.qp1_tunnel_qpn;
932 dev->caps.qp1_proxy[i - 1] = func_cap.qp1_proxy_qpn;
933 dev->caps.port_mask[i] = dev->caps.port_type[i];
934 dev->caps.phys_port_id[i] = func_cap.phys_port_id;
935 err = mlx4_get_slave_pkey_gid_tbl_len(dev, i,
936 &dev->caps.gid_table_len[i],
937 &dev->caps.pkey_table_len[i]);
938 if (err)
939 goto err_mem;
940 }
941
942 if (dev->caps.uar_page_size * (dev->caps.num_uars -
943 dev->caps.reserved_uars) >
944 pci_resource_len(dev->persist->pdev,
945 2)) {
946 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n",
947 dev->caps.uar_page_size * dev->caps.num_uars,
948 (unsigned long long)
949 pci_resource_len(dev->persist->pdev, 2));
950 err = -ENOMEM;
951 goto err_mem;
952 }
953
954 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) {
955 dev->caps.eqe_size = 64;
956 dev->caps.eqe_factor = 1;
957 } else {
958 dev->caps.eqe_size = 32;
959 dev->caps.eqe_factor = 0;
960 }
961
962 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) {
963 dev->caps.cqe_size = 64;
964 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
965 } else {
966 dev->caps.cqe_size = 32;
967 }
968
969 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_EQE_STRIDE_ENABLED) {
970 dev->caps.eqe_size = hca_param.eqe_size;
971 dev->caps.eqe_factor = 0;
972 }
973
974 if (hca_param.dev_cap_enabled & MLX4_DEV_CAP_CQE_STRIDE_ENABLED) {
975 dev->caps.cqe_size = hca_param.cqe_size;
976 /* User still need to know when CQE > 32B */
977 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE;
978 }
979
980 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
981 mlx4_warn(dev, "Timestamping is not supported in slave mode\n");
982
983 slave_adjust_steering_mode(dev, &dev_cap, &hca_param);
984 mlx4_dbg(dev, "RSS support for IP fragments is %s\n",
985 hca_param.rss_ip_frags ? "on" : "off");
986
987 if (func_cap.extra_flags & MLX4_QUERY_FUNC_FLAGS_BF_RES_QP &&
988 dev->caps.bf_reg_size)
989 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_ETH_BF_QP;
990
991 if (func_cap.extra_flags & MLX4_QUERY_FUNC_FLAGS_A0_RES_QP)
992 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_A0_QP;
993
994 return 0;
995
996err_mem:
997 kfree(dev->caps.qp0_qkey);
998 kfree(dev->caps.qp0_tunnel);
999 kfree(dev->caps.qp0_proxy);
1000 kfree(dev->caps.qp1_tunnel);
1001 kfree(dev->caps.qp1_proxy);
1002 dev->caps.qp0_qkey = NULL;
1003 dev->caps.qp0_tunnel = NULL;
1004 dev->caps.qp0_proxy = NULL;
1005 dev->caps.qp1_tunnel = NULL;
1006 dev->caps.qp1_proxy = NULL;
1007
1008 return err;
1009}
1010
1011static void mlx4_request_modules(struct mlx4_dev *dev)
1012{
1013 int port;
1014 int has_ib_port = false;
1015 int has_eth_port = false;
1016#define EN_DRV_NAME "mlx4_en"
1017#define IB_DRV_NAME "mlx4_ib"
1018
1019 for (port = 1; port <= dev->caps.num_ports; port++) {
1020 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
1021 has_ib_port = true;
1022 else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
1023 has_eth_port = true;
1024 }
1025
1026 if (has_eth_port)
1027 request_module_nowait(EN_DRV_NAME);
1028 if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE))
1029 request_module_nowait(IB_DRV_NAME);
1030}
1031
1032/*
1033 * Change the port configuration of the device.
1034 * Every user of this function must hold the port mutex.
1035 */
1036int mlx4_change_port_types(struct mlx4_dev *dev,
1037 enum mlx4_port_type *port_types)
1038{
1039 int err = 0;
1040 int change = 0;
1041 int port;
1042
1043 for (port = 0; port < dev->caps.num_ports; port++) {
1044 /* Change the port type only if the new type is different
1045 * from the current, and not set to Auto */
1046 if (port_types[port] != dev->caps.port_type[port + 1])
1047 change = 1;
1048 }
1049 if (change) {
1050 mlx4_unregister_device(dev);
1051 for (port = 1; port <= dev->caps.num_ports; port++) {
1052 mlx4_CLOSE_PORT(dev, port);
1053 dev->caps.port_type[port] = port_types[port - 1];
1054 err = mlx4_SET_PORT(dev, port, -1);
1055 if (err) {
1056 mlx4_err(dev, "Failed to set port %d, aborting\n",
1057 port);
1058 goto out;
1059 }
1060 }
1061 mlx4_set_port_mask(dev);
1062 err = mlx4_register_device(dev);
1063 if (err) {
1064 mlx4_err(dev, "Failed to register device\n");
1065 goto out;
1066 }
1067 mlx4_request_modules(dev);
1068 }
1069
1070out:
1071 return err;
1072}
1073
1074static ssize_t show_port_type(struct device *dev,
1075 struct device_attribute *attr,
1076 char *buf)
1077{
1078 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1079 port_attr);
1080 struct mlx4_dev *mdev = info->dev;
1081 char type[8];
1082
1083 sprintf(type, "%s",
1084 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ?
1085 "ib" : "eth");
1086 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO)
1087 sprintf(buf, "auto (%s)\n", type);
1088 else
1089 sprintf(buf, "%s\n", type);
1090
1091 return strlen(buf);
1092}
1093
1094static int __set_port_type(struct mlx4_port_info *info,
1095 enum mlx4_port_type port_type)
1096{
1097 struct mlx4_dev *mdev = info->dev;
1098 struct mlx4_priv *priv = mlx4_priv(mdev);
1099 enum mlx4_port_type types[MLX4_MAX_PORTS];
1100 enum mlx4_port_type new_types[MLX4_MAX_PORTS];
1101 int i;
1102 int err = 0;
1103
1104 mlx4_stop_sense(mdev);
1105 mutex_lock(&priv->port_mutex);
1106 info->tmp_type = port_type;
1107
1108 /* Possible type is always the one that was delivered */
1109 mdev->caps.possible_type[info->port] = info->tmp_type;
1110
1111 for (i = 0; i < mdev->caps.num_ports; i++) {
1112 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
1113 mdev->caps.possible_type[i+1];
1114 if (types[i] == MLX4_PORT_TYPE_AUTO)
1115 types[i] = mdev->caps.port_type[i+1];
1116 }
1117
1118 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) &&
1119 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) {
1120 for (i = 1; i <= mdev->caps.num_ports; i++) {
1121 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) {
1122 mdev->caps.possible_type[i] = mdev->caps.port_type[i];
1123 err = -EINVAL;
1124 }
1125 }
1126 }
1127 if (err) {
1128 mlx4_err(mdev, "Auto sensing is not supported on this HCA. Set only 'eth' or 'ib' for both ports (should be the same)\n");
1129 goto out;
1130 }
1131
1132 mlx4_do_sense_ports(mdev, new_types, types);
1133
1134 err = mlx4_check_port_params(mdev, new_types);
1135 if (err)
1136 goto out;
1137
1138 /* We are about to apply the changes after the configuration
1139 * was verified, no need to remember the temporary types
1140 * any more */
1141 for (i = 0; i < mdev->caps.num_ports; i++)
1142 priv->port[i + 1].tmp_type = 0;
1143
1144 err = mlx4_change_port_types(mdev, new_types);
1145
1146out:
1147 mlx4_start_sense(mdev);
1148 mutex_unlock(&priv->port_mutex);
1149
1150 return err;
1151}
1152
1153static ssize_t set_port_type(struct device *dev,
1154 struct device_attribute *attr,
1155 const char *buf, size_t count)
1156{
1157 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1158 port_attr);
1159 struct mlx4_dev *mdev = info->dev;
1160 enum mlx4_port_type port_type;
1161 static DEFINE_MUTEX(set_port_type_mutex);
1162 int err;
1163
1164 mutex_lock(&set_port_type_mutex);
1165
1166 if (!strcmp(buf, "ib\n")) {
1167 port_type = MLX4_PORT_TYPE_IB;
1168 } else if (!strcmp(buf, "eth\n")) {
1169 port_type = MLX4_PORT_TYPE_ETH;
1170 } else if (!strcmp(buf, "auto\n")) {
1171 port_type = MLX4_PORT_TYPE_AUTO;
1172 } else {
1173 mlx4_err(mdev, "%s is not supported port type\n", buf);
1174 err = -EINVAL;
1175 goto err_out;
1176 }
1177
1178 err = __set_port_type(info, port_type);
1179
1180err_out:
1181 mutex_unlock(&set_port_type_mutex);
1182
1183 return err ? err : count;
1184}
1185
1186enum ibta_mtu {
1187 IB_MTU_256 = 1,
1188 IB_MTU_512 = 2,
1189 IB_MTU_1024 = 3,
1190 IB_MTU_2048 = 4,
1191 IB_MTU_4096 = 5
1192};
1193
1194static inline int int_to_ibta_mtu(int mtu)
1195{
1196 switch (mtu) {
1197 case 256: return IB_MTU_256;
1198 case 512: return IB_MTU_512;
1199 case 1024: return IB_MTU_1024;
1200 case 2048: return IB_MTU_2048;
1201 case 4096: return IB_MTU_4096;
1202 default: return -1;
1203 }
1204}
1205
1206static inline int ibta_mtu_to_int(enum ibta_mtu mtu)
1207{
1208 switch (mtu) {
1209 case IB_MTU_256: return 256;
1210 case IB_MTU_512: return 512;
1211 case IB_MTU_1024: return 1024;
1212 case IB_MTU_2048: return 2048;
1213 case IB_MTU_4096: return 4096;
1214 default: return -1;
1215 }
1216}
1217
1218static ssize_t show_port_ib_mtu(struct device *dev,
1219 struct device_attribute *attr,
1220 char *buf)
1221{
1222 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1223 port_mtu_attr);
1224 struct mlx4_dev *mdev = info->dev;
1225
1226 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH)
1227 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
1228
1229 sprintf(buf, "%d\n",
1230 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port]));
1231 return strlen(buf);
1232}
1233
1234static ssize_t set_port_ib_mtu(struct device *dev,
1235 struct device_attribute *attr,
1236 const char *buf, size_t count)
1237{
1238 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
1239 port_mtu_attr);
1240 struct mlx4_dev *mdev = info->dev;
1241 struct mlx4_priv *priv = mlx4_priv(mdev);
1242 int err, port, mtu, ibta_mtu = -1;
1243
1244 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) {
1245 mlx4_warn(mdev, "port level mtu is only used for IB ports\n");
1246 return -EINVAL;
1247 }
1248
1249 err = kstrtoint(buf, 0, &mtu);
1250 if (!err)
1251 ibta_mtu = int_to_ibta_mtu(mtu);
1252
1253 if (err || ibta_mtu < 0) {
1254 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf);
1255 return -EINVAL;
1256 }
1257
1258 mdev->caps.port_ib_mtu[info->port] = ibta_mtu;
1259
1260 mlx4_stop_sense(mdev);
1261 mutex_lock(&priv->port_mutex);
1262 mlx4_unregister_device(mdev);
1263 for (port = 1; port <= mdev->caps.num_ports; port++) {
1264 mlx4_CLOSE_PORT(mdev, port);
1265 err = mlx4_SET_PORT(mdev, port, -1);
1266 if (err) {
1267 mlx4_err(mdev, "Failed to set port %d, aborting\n",
1268 port);
1269 goto err_set_port;
1270 }
1271 }
1272 err = mlx4_register_device(mdev);
1273err_set_port:
1274 mutex_unlock(&priv->port_mutex);
1275 mlx4_start_sense(mdev);
1276 return err ? err : count;
1277}
1278
1279/* bond for multi-function device */
1280#define MAX_MF_BOND_ALLOWED_SLAVES 63
1281static int mlx4_mf_bond(struct mlx4_dev *dev)
1282{
1283 int err = 0;
1284 int nvfs;
1285 struct mlx4_slaves_pport slaves_port1;
1286 struct mlx4_slaves_pport slaves_port2;
1287 DECLARE_BITMAP(slaves_port_1_2, MLX4_MFUNC_MAX);
1288
1289 slaves_port1 = mlx4_phys_to_slaves_pport(dev, 1);
1290 slaves_port2 = mlx4_phys_to_slaves_pport(dev, 2);
1291 bitmap_and(slaves_port_1_2,
1292 slaves_port1.slaves, slaves_port2.slaves,
1293 dev->persist->num_vfs + 1);
1294
1295 /* only single port vfs are allowed */
1296 if (bitmap_weight(slaves_port_1_2, dev->persist->num_vfs + 1) > 1) {
1297 mlx4_warn(dev, "HA mode unsupported for dual ported VFs\n");
1298 return -EINVAL;
1299 }
1300
1301 /* number of virtual functions is number of total functions minus one
1302 * physical function for each port.
1303 */
1304 nvfs = bitmap_weight(slaves_port1.slaves, dev->persist->num_vfs + 1) +
1305 bitmap_weight(slaves_port2.slaves, dev->persist->num_vfs + 1) - 2;
1306
1307 /* limit on maximum allowed VFs */
1308 if (nvfs > MAX_MF_BOND_ALLOWED_SLAVES) {
1309 mlx4_warn(dev, "HA mode is not supported for %d VFs (max %d are allowed)\n",
1310 nvfs, MAX_MF_BOND_ALLOWED_SLAVES);
1311 return -EINVAL;
1312 }
1313
1314 if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED) {
1315 mlx4_warn(dev, "HA mode unsupported for NON DMFS steering\n");
1316 return -EINVAL;
1317 }
1318
1319 err = mlx4_bond_mac_table(dev);
1320 if (err)
1321 return err;
1322 err = mlx4_bond_vlan_table(dev);
1323 if (err)
1324 goto err1;
1325 err = mlx4_bond_fs_rules(dev);
1326 if (err)
1327 goto err2;
1328
1329 return 0;
1330err2:
1331 (void)mlx4_unbond_vlan_table(dev);
1332err1:
1333 (void)mlx4_unbond_mac_table(dev);
1334 return err;
1335}
1336
1337static int mlx4_mf_unbond(struct mlx4_dev *dev)
1338{
1339 int ret, ret1;
1340
1341 ret = mlx4_unbond_fs_rules(dev);
1342 if (ret)
1343 mlx4_warn(dev, "multifunction unbond for flow rules failedi (%d)\n", ret);
1344 ret1 = mlx4_unbond_mac_table(dev);
1345 if (ret1) {
1346 mlx4_warn(dev, "multifunction unbond for MAC table failed (%d)\n", ret1);
1347 ret = ret1;
1348 }
1349 ret1 = mlx4_unbond_vlan_table(dev);
1350 if (ret1) {
1351 mlx4_warn(dev, "multifunction unbond for VLAN table failed (%d)\n", ret1);
1352 ret = ret1;
1353 }
1354 return ret;
1355}
1356
1357int mlx4_bond(struct mlx4_dev *dev)
1358{
1359 int ret = 0;
1360 struct mlx4_priv *priv = mlx4_priv(dev);
1361
1362 mutex_lock(&priv->bond_mutex);
1363
1364 if (!mlx4_is_bonded(dev)) {
1365 ret = mlx4_do_bond(dev, true);
1366 if (ret)
1367 mlx4_err(dev, "Failed to bond device: %d\n", ret);
1368 if (!ret && mlx4_is_master(dev)) {
1369 ret = mlx4_mf_bond(dev);
1370 if (ret) {
1371 mlx4_err(dev, "bond for multifunction failed\n");
1372 mlx4_do_bond(dev, false);
1373 }
1374 }
1375 }
1376
1377 mutex_unlock(&priv->bond_mutex);
1378 if (!ret)
1379 mlx4_dbg(dev, "Device is bonded\n");
1380
1381 return ret;
1382}
1383EXPORT_SYMBOL_GPL(mlx4_bond);
1384
1385int mlx4_unbond(struct mlx4_dev *dev)
1386{
1387 int ret = 0;
1388 struct mlx4_priv *priv = mlx4_priv(dev);
1389
1390 mutex_lock(&priv->bond_mutex);
1391
1392 if (mlx4_is_bonded(dev)) {
1393 int ret2 = 0;
1394
1395 ret = mlx4_do_bond(dev, false);
1396 if (ret)
1397 mlx4_err(dev, "Failed to unbond device: %d\n", ret);
1398 if (mlx4_is_master(dev))
1399 ret2 = mlx4_mf_unbond(dev);
1400 if (ret2) {
1401 mlx4_warn(dev, "Failed to unbond device for multifunction (%d)\n", ret2);
1402 ret = ret2;
1403 }
1404 }
1405
1406 mutex_unlock(&priv->bond_mutex);
1407 if (!ret)
1408 mlx4_dbg(dev, "Device is unbonded\n");
1409
1410 return ret;
1411}
1412EXPORT_SYMBOL_GPL(mlx4_unbond);
1413
1414
1415int mlx4_port_map_set(struct mlx4_dev *dev, struct mlx4_port_map *v2p)
1416{
1417 u8 port1 = v2p->port1;
1418 u8 port2 = v2p->port2;
1419 struct mlx4_priv *priv = mlx4_priv(dev);
1420 int err;
1421
1422 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP))
1423 return -ENOTSUPP;
1424
1425 mutex_lock(&priv->bond_mutex);
1426
1427 /* zero means keep current mapping for this port */
1428 if (port1 == 0)
1429 port1 = priv->v2p.port1;
1430 if (port2 == 0)
1431 port2 = priv->v2p.port2;
1432
1433 if ((port1 < 1) || (port1 > MLX4_MAX_PORTS) ||
1434 (port2 < 1) || (port2 > MLX4_MAX_PORTS) ||
1435 (port1 == 2 && port2 == 1)) {
1436 /* besides boundary checks cross mapping makes
1437 * no sense and therefore not allowed */
1438 err = -EINVAL;
1439 } else if ((port1 == priv->v2p.port1) &&
1440 (port2 == priv->v2p.port2)) {
1441 err = 0;
1442 } else {
1443 err = mlx4_virt2phy_port_map(dev, port1, port2);
1444 if (!err) {
1445 mlx4_dbg(dev, "port map changed: [%d][%d]\n",
1446 port1, port2);
1447 priv->v2p.port1 = port1;
1448 priv->v2p.port2 = port2;
1449 } else {
1450 mlx4_err(dev, "Failed to change port mape: %d\n", err);
1451 }
1452 }
1453
1454 mutex_unlock(&priv->bond_mutex);
1455 return err;
1456}
1457EXPORT_SYMBOL_GPL(mlx4_port_map_set);
1458
1459static int mlx4_load_fw(struct mlx4_dev *dev)
1460{
1461 struct mlx4_priv *priv = mlx4_priv(dev);
1462 int err;
1463
1464 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
1465 GFP_HIGHUSER | __GFP_NOWARN, 0);
1466 if (!priv->fw.fw_icm) {
1467 mlx4_err(dev, "Couldn't allocate FW area, aborting\n");
1468 return -ENOMEM;
1469 }
1470
1471 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
1472 if (err) {
1473 mlx4_err(dev, "MAP_FA command failed, aborting\n");
1474 goto err_free;
1475 }
1476
1477 err = mlx4_RUN_FW(dev);
1478 if (err) {
1479 mlx4_err(dev, "RUN_FW command failed, aborting\n");
1480 goto err_unmap_fa;
1481 }
1482
1483 return 0;
1484
1485err_unmap_fa:
1486 mlx4_UNMAP_FA(dev);
1487
1488err_free:
1489 mlx4_free_icm(dev, priv->fw.fw_icm, 0);
1490 return err;
1491}
1492
1493static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
1494 int cmpt_entry_sz)
1495{
1496 struct mlx4_priv *priv = mlx4_priv(dev);
1497 int err;
1498 int num_eqs;
1499
1500 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
1501 cmpt_base +
1502 ((u64) (MLX4_CMPT_TYPE_QP *
1503 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1504 cmpt_entry_sz, dev->caps.num_qps,
1505 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1506 0, 0);
1507 if (err)
1508 goto err;
1509
1510 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
1511 cmpt_base +
1512 ((u64) (MLX4_CMPT_TYPE_SRQ *
1513 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1514 cmpt_entry_sz, dev->caps.num_srqs,
1515 dev->caps.reserved_srqs, 0, 0);
1516 if (err)
1517 goto err_qp;
1518
1519 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
1520 cmpt_base +
1521 ((u64) (MLX4_CMPT_TYPE_CQ *
1522 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1523 cmpt_entry_sz, dev->caps.num_cqs,
1524 dev->caps.reserved_cqs, 0, 0);
1525 if (err)
1526 goto err_srq;
1527
1528 num_eqs = dev->phys_caps.num_phys_eqs;
1529 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
1530 cmpt_base +
1531 ((u64) (MLX4_CMPT_TYPE_EQ *
1532 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
1533 cmpt_entry_sz, num_eqs, num_eqs, 0, 0);
1534 if (err)
1535 goto err_cq;
1536
1537 return 0;
1538
1539err_cq:
1540 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1541
1542err_srq:
1543 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1544
1545err_qp:
1546 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1547
1548err:
1549 return err;
1550}
1551
1552static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
1553 struct mlx4_init_hca_param *init_hca, u64 icm_size)
1554{
1555 struct mlx4_priv *priv = mlx4_priv(dev);
1556 u64 aux_pages;
1557 int num_eqs;
1558 int err;
1559
1560 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
1561 if (err) {
1562 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting\n");
1563 return err;
1564 }
1565
1566 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory\n",
1567 (unsigned long long) icm_size >> 10,
1568 (unsigned long long) aux_pages << 2);
1569
1570 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
1571 GFP_HIGHUSER | __GFP_NOWARN, 0);
1572 if (!priv->fw.aux_icm) {
1573 mlx4_err(dev, "Couldn't allocate aux memory, aborting\n");
1574 return -ENOMEM;
1575 }
1576
1577 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
1578 if (err) {
1579 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting\n");
1580 goto err_free_aux;
1581 }
1582
1583 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
1584 if (err) {
1585 mlx4_err(dev, "Failed to map cMPT context memory, aborting\n");
1586 goto err_unmap_aux;
1587 }
1588
1589
1590 num_eqs = dev->phys_caps.num_phys_eqs;
1591 err = mlx4_init_icm_table(dev, &priv->eq_table.table,
1592 init_hca->eqc_base, dev_cap->eqc_entry_sz,
1593 num_eqs, num_eqs, 0, 0);
1594 if (err) {
1595 mlx4_err(dev, "Failed to map EQ context memory, aborting\n");
1596 goto err_unmap_cmpt;
1597 }
1598
1599 /*
1600 * Reserved MTT entries must be aligned up to a cacheline
1601 * boundary, since the FW will write to them, while the driver
1602 * writes to all other MTT entries. (The variable
1603 * dev->caps.mtt_entry_sz below is really the MTT segment
1604 * size, not the raw entry size)
1605 */
1606 dev->caps.reserved_mtts =
1607 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz,
1608 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz;
1609
1610 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
1611 init_hca->mtt_base,
1612 dev->caps.mtt_entry_sz,
1613 dev->caps.num_mtts,
1614 dev->caps.reserved_mtts, 1, 0);
1615 if (err) {
1616 mlx4_err(dev, "Failed to map MTT context memory, aborting\n");
1617 goto err_unmap_eq;
1618 }
1619
1620 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
1621 init_hca->dmpt_base,
1622 dev_cap->dmpt_entry_sz,
1623 dev->caps.num_mpts,
1624 dev->caps.reserved_mrws, 1, 1);
1625 if (err) {
1626 mlx4_err(dev, "Failed to map dMPT context memory, aborting\n");
1627 goto err_unmap_mtt;
1628 }
1629
1630 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
1631 init_hca->qpc_base,
1632 dev_cap->qpc_entry_sz,
1633 dev->caps.num_qps,
1634 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1635 0, 0);
1636 if (err) {
1637 mlx4_err(dev, "Failed to map QP context memory, aborting\n");
1638 goto err_unmap_dmpt;
1639 }
1640
1641 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
1642 init_hca->auxc_base,
1643 dev_cap->aux_entry_sz,
1644 dev->caps.num_qps,
1645 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1646 0, 0);
1647 if (err) {
1648 mlx4_err(dev, "Failed to map AUXC context memory, aborting\n");
1649 goto err_unmap_qp;
1650 }
1651
1652 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
1653 init_hca->altc_base,
1654 dev_cap->altc_entry_sz,
1655 dev->caps.num_qps,
1656 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1657 0, 0);
1658 if (err) {
1659 mlx4_err(dev, "Failed to map ALTC context memory, aborting\n");
1660 goto err_unmap_auxc;
1661 }
1662
1663 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
1664 init_hca->rdmarc_base,
1665 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
1666 dev->caps.num_qps,
1667 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
1668 0, 0);
1669 if (err) {
1670 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
1671 goto err_unmap_altc;
1672 }
1673
1674 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
1675 init_hca->cqc_base,
1676 dev_cap->cqc_entry_sz,
1677 dev->caps.num_cqs,
1678 dev->caps.reserved_cqs, 0, 0);
1679 if (err) {
1680 mlx4_err(dev, "Failed to map CQ context memory, aborting\n");
1681 goto err_unmap_rdmarc;
1682 }
1683
1684 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
1685 init_hca->srqc_base,
1686 dev_cap->srq_entry_sz,
1687 dev->caps.num_srqs,
1688 dev->caps.reserved_srqs, 0, 0);
1689 if (err) {
1690 mlx4_err(dev, "Failed to map SRQ context memory, aborting\n");
1691 goto err_unmap_cq;
1692 }
1693
1694 /*
1695 * For flow steering device managed mode it is required to use
1696 * mlx4_init_icm_table. For B0 steering mode it's not strictly
1697 * required, but for simplicity just map the whole multicast
1698 * group table now. The table isn't very big and it's a lot
1699 * easier than trying to track ref counts.
1700 */
1701 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
1702 init_hca->mc_base,
1703 mlx4_get_mgm_entry_size(dev),
1704 dev->caps.num_mgms + dev->caps.num_amgms,
1705 dev->caps.num_mgms + dev->caps.num_amgms,
1706 0, 0);
1707 if (err) {
1708 mlx4_err(dev, "Failed to map MCG context memory, aborting\n");
1709 goto err_unmap_srq;
1710 }
1711
1712 return 0;
1713
1714err_unmap_srq:
1715 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1716
1717err_unmap_cq:
1718 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1719
1720err_unmap_rdmarc:
1721 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1722
1723err_unmap_altc:
1724 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1725
1726err_unmap_auxc:
1727 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1728
1729err_unmap_qp:
1730 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1731
1732err_unmap_dmpt:
1733 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1734
1735err_unmap_mtt:
1736 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1737
1738err_unmap_eq:
1739 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1740
1741err_unmap_cmpt:
1742 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1743 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1744 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1745 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1746
1747err_unmap_aux:
1748 mlx4_UNMAP_ICM_AUX(dev);
1749
1750err_free_aux:
1751 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1752
1753 return err;
1754}
1755
1756static void mlx4_free_icms(struct mlx4_dev *dev)
1757{
1758 struct mlx4_priv *priv = mlx4_priv(dev);
1759
1760 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
1761 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
1762 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
1763 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
1764 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
1765 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
1766 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
1767 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
1768 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
1769 mlx4_cleanup_icm_table(dev, &priv->eq_table.table);
1770 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
1771 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
1772 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
1773 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
1774
1775 mlx4_UNMAP_ICM_AUX(dev);
1776 mlx4_free_icm(dev, priv->fw.aux_icm, 0);
1777}
1778
1779static void mlx4_slave_exit(struct mlx4_dev *dev)
1780{
1781 struct mlx4_priv *priv = mlx4_priv(dev);
1782
1783 mutex_lock(&priv->cmd.slave_cmd_mutex);
1784 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP,
1785 MLX4_COMM_TIME))
1786 mlx4_warn(dev, "Failed to close slave function\n");
1787 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1788}
1789
1790static int map_bf_area(struct mlx4_dev *dev)
1791{
1792 struct mlx4_priv *priv = mlx4_priv(dev);
1793 resource_size_t bf_start;
1794 resource_size_t bf_len;
1795 int err = 0;
1796
1797 if (!dev->caps.bf_reg_size)
1798 return -ENXIO;
1799
1800 bf_start = pci_resource_start(dev->persist->pdev, 2) +
1801 (dev->caps.num_uars << PAGE_SHIFT);
1802 bf_len = pci_resource_len(dev->persist->pdev, 2) -
1803 (dev->caps.num_uars << PAGE_SHIFT);
1804 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len);
1805 if (!priv->bf_mapping)
1806 err = -ENOMEM;
1807
1808 return err;
1809}
1810
1811static void unmap_bf_area(struct mlx4_dev *dev)
1812{
1813 if (mlx4_priv(dev)->bf_mapping)
1814 io_mapping_free(mlx4_priv(dev)->bf_mapping);
1815}
1816
1817cycle_t mlx4_read_clock(struct mlx4_dev *dev)
1818{
1819 u32 clockhi, clocklo, clockhi1;
1820 cycle_t cycles;
1821 int i;
1822 struct mlx4_priv *priv = mlx4_priv(dev);
1823
1824 for (i = 0; i < 10; i++) {
1825 clockhi = swab32(readl(priv->clock_mapping));
1826 clocklo = swab32(readl(priv->clock_mapping + 4));
1827 clockhi1 = swab32(readl(priv->clock_mapping));
1828 if (clockhi == clockhi1)
1829 break;
1830 }
1831
1832 cycles = (u64) clockhi << 32 | (u64) clocklo;
1833
1834 return cycles;
1835}
1836EXPORT_SYMBOL_GPL(mlx4_read_clock);
1837
1838
1839static int map_internal_clock(struct mlx4_dev *dev)
1840{
1841 struct mlx4_priv *priv = mlx4_priv(dev);
1842
1843 priv->clock_mapping =
1844 ioremap(pci_resource_start(dev->persist->pdev,
1845 priv->fw.clock_bar) +
1846 priv->fw.clock_offset, MLX4_CLOCK_SIZE);
1847
1848 if (!priv->clock_mapping)
1849 return -ENOMEM;
1850
1851 return 0;
1852}
1853
1854int mlx4_get_internal_clock_params(struct mlx4_dev *dev,
1855 struct mlx4_clock_params *params)
1856{
1857 struct mlx4_priv *priv = mlx4_priv(dev);
1858
1859 if (mlx4_is_slave(dev))
1860 return -ENOTSUPP;
1861
1862 if (!params)
1863 return -EINVAL;
1864
1865 params->bar = priv->fw.clock_bar;
1866 params->offset = priv->fw.clock_offset;
1867 params->size = MLX4_CLOCK_SIZE;
1868
1869 return 0;
1870}
1871EXPORT_SYMBOL_GPL(mlx4_get_internal_clock_params);
1872
1873static void unmap_internal_clock(struct mlx4_dev *dev)
1874{
1875 struct mlx4_priv *priv = mlx4_priv(dev);
1876
1877 if (priv->clock_mapping)
1878 iounmap(priv->clock_mapping);
1879}
1880
1881static void mlx4_close_hca(struct mlx4_dev *dev)
1882{
1883 unmap_internal_clock(dev);
1884 unmap_bf_area(dev);
1885 if (mlx4_is_slave(dev))
1886 mlx4_slave_exit(dev);
1887 else {
1888 mlx4_CLOSE_HCA(dev, 0);
1889 mlx4_free_icms(dev);
1890 }
1891}
1892
1893static void mlx4_close_fw(struct mlx4_dev *dev)
1894{
1895 if (!mlx4_is_slave(dev)) {
1896 mlx4_UNMAP_FA(dev);
1897 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0);
1898 }
1899}
1900
1901static int mlx4_comm_check_offline(struct mlx4_dev *dev)
1902{
1903#define COMM_CHAN_OFFLINE_OFFSET 0x09
1904
1905 u32 comm_flags;
1906 u32 offline_bit;
1907 unsigned long end;
1908 struct mlx4_priv *priv = mlx4_priv(dev);
1909
1910 end = msecs_to_jiffies(MLX4_COMM_OFFLINE_TIME_OUT) + jiffies;
1911 while (time_before(jiffies, end)) {
1912 comm_flags = swab32(readl((__iomem char *)priv->mfunc.comm +
1913 MLX4_COMM_CHAN_FLAGS));
1914 offline_bit = (comm_flags &
1915 (u32)(1 << COMM_CHAN_OFFLINE_OFFSET));
1916 if (!offline_bit)
1917 return 0;
1918 /* There are cases as part of AER/Reset flow that PF needs
1919 * around 100 msec to load. We therefore sleep for 100 msec
1920 * to allow other tasks to make use of that CPU during this
1921 * time interval.
1922 */
1923 msleep(100);
1924 }
1925 mlx4_err(dev, "Communication channel is offline.\n");
1926 return -EIO;
1927}
1928
1929static void mlx4_reset_vf_support(struct mlx4_dev *dev)
1930{
1931#define COMM_CHAN_RST_OFFSET 0x1e
1932
1933 struct mlx4_priv *priv = mlx4_priv(dev);
1934 u32 comm_rst;
1935 u32 comm_caps;
1936
1937 comm_caps = swab32(readl((__iomem char *)priv->mfunc.comm +
1938 MLX4_COMM_CHAN_CAPS));
1939 comm_rst = (comm_caps & (u32)(1 << COMM_CHAN_RST_OFFSET));
1940
1941 if (comm_rst)
1942 dev->caps.vf_caps |= MLX4_VF_CAP_FLAG_RESET;
1943}
1944
1945static int mlx4_init_slave(struct mlx4_dev *dev)
1946{
1947 struct mlx4_priv *priv = mlx4_priv(dev);
1948 u64 dma = (u64) priv->mfunc.vhcr_dma;
1949 int ret_from_reset = 0;
1950 u32 slave_read;
1951 u32 cmd_channel_ver;
1952
1953 if (atomic_read(&pf_loading)) {
1954 mlx4_warn(dev, "PF is not ready - Deferring probe\n");
1955 return -EPROBE_DEFER;
1956 }
1957
1958 mutex_lock(&priv->cmd.slave_cmd_mutex);
1959 priv->cmd.max_cmds = 1;
1960 if (mlx4_comm_check_offline(dev)) {
1961 mlx4_err(dev, "PF is not responsive, skipping initialization\n");
1962 goto err_offline;
1963 }
1964
1965 mlx4_reset_vf_support(dev);
1966 mlx4_warn(dev, "Sending reset\n");
1967 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0,
1968 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME);
1969 /* if we are in the middle of flr the slave will try
1970 * NUM_OF_RESET_RETRIES times before leaving.*/
1971 if (ret_from_reset) {
1972 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) {
1973 mlx4_warn(dev, "slave is currently in the middle of FLR - Deferring probe\n");
1974 mutex_unlock(&priv->cmd.slave_cmd_mutex);
1975 return -EPROBE_DEFER;
1976 } else
1977 goto err;
1978 }
1979
1980 /* check the driver version - the slave I/F revision
1981 * must match the master's */
1982 slave_read = swab32(readl(&priv->mfunc.comm->slave_read));
1983 cmd_channel_ver = mlx4_comm_get_version();
1984
1985 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) !=
1986 MLX4_COMM_GET_IF_REV(slave_read)) {
1987 mlx4_err(dev, "slave driver version is not supported by the master\n");
1988 goto err;
1989 }
1990
1991 mlx4_warn(dev, "Sending vhcr0\n");
1992 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48,
1993 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
1994 goto err;
1995 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32,
1996 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
1997 goto err;
1998 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16,
1999 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
2000 goto err;
2001 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma,
2002 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME))
2003 goto err;
2004
2005 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2006 return 0;
2007
2008err:
2009 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP, 0);
2010err_offline:
2011 mutex_unlock(&priv->cmd.slave_cmd_mutex);
2012 return -EIO;
2013}
2014
2015static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev)
2016{
2017 int i;
2018
2019 for (i = 1; i <= dev->caps.num_ports; i++) {
2020 if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH)
2021 dev->caps.gid_table_len[i] =
2022 mlx4_get_slave_num_gids(dev, 0, i);
2023 else
2024 dev->caps.gid_table_len[i] = 1;
2025 dev->caps.pkey_table_len[i] =
2026 dev->phys_caps.pkey_phys_table_len[i] - 1;
2027 }
2028}
2029
2030static int choose_log_fs_mgm_entry_size(int qp_per_entry)
2031{
2032 int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE;
2033
2034 for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE;
2035 i++) {
2036 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2))
2037 break;
2038 }
2039
2040 return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1;
2041}
2042
2043static const char *dmfs_high_rate_steering_mode_str(int dmfs_high_steer_mode)
2044{
2045 switch (dmfs_high_steer_mode) {
2046 case MLX4_STEERING_DMFS_A0_DEFAULT:
2047 return "default performance";
2048
2049 case MLX4_STEERING_DMFS_A0_DYNAMIC:
2050 return "dynamic hybrid mode";
2051
2052 case MLX4_STEERING_DMFS_A0_STATIC:
2053 return "performance optimized for limited rule configuration (static)";
2054
2055 case MLX4_STEERING_DMFS_A0_DISABLE:
2056 return "disabled performance optimized steering";
2057
2058 case MLX4_STEERING_DMFS_A0_NOT_SUPPORTED:
2059 return "performance optimized steering not supported";
2060
2061 default:
2062 return "Unrecognized mode";
2063 }
2064}
2065
2066#define MLX4_DMFS_A0_STEERING (1UL << 2)
2067
2068static void choose_steering_mode(struct mlx4_dev *dev,
2069 struct mlx4_dev_cap *dev_cap)
2070{
2071 if (mlx4_log_num_mgm_entry_size <= 0) {
2072 if ((-mlx4_log_num_mgm_entry_size) & MLX4_DMFS_A0_STEERING) {
2073 if (dev->caps.dmfs_high_steer_mode ==
2074 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
2075 mlx4_err(dev, "DMFS high rate mode not supported\n");
2076 else
2077 dev->caps.dmfs_high_steer_mode =
2078 MLX4_STEERING_DMFS_A0_STATIC;
2079 }
2080 }
2081
2082 if (mlx4_log_num_mgm_entry_size <= 0 &&
2083 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN &&
2084 (!mlx4_is_mfunc(dev) ||
2085 (dev_cap->fs_max_num_qp_per_entry >=
2086 (dev->persist->num_vfs + 1))) &&
2087 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >=
2088 MLX4_MIN_MGM_LOG_ENTRY_SIZE) {
2089 dev->oper_log_mgm_entry_size =
2090 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry);
2091 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED;
2092 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry;
2093 dev->caps.fs_log_max_ucast_qp_range_size =
2094 dev_cap->fs_log_max_ucast_qp_range_size;
2095 } else {
2096 if (dev->caps.dmfs_high_steer_mode !=
2097 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
2098 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DISABLE;
2099 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER &&
2100 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
2101 dev->caps.steering_mode = MLX4_STEERING_MODE_B0;
2102 else {
2103 dev->caps.steering_mode = MLX4_STEERING_MODE_A0;
2104
2105 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER ||
2106 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER)
2107 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags set to use B0 steering - falling back to A0 steering mode\n");
2108 }
2109 dev->oper_log_mgm_entry_size =
2110 mlx4_log_num_mgm_entry_size > 0 ?
2111 mlx4_log_num_mgm_entry_size :
2112 MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE;
2113 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev);
2114 }
2115 mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, modparam log_num_mgm_entry_size = %d\n",
2116 mlx4_steering_mode_str(dev->caps.steering_mode),
2117 dev->oper_log_mgm_entry_size,
2118 mlx4_log_num_mgm_entry_size);
2119}
2120
2121static void choose_tunnel_offload_mode(struct mlx4_dev *dev,
2122 struct mlx4_dev_cap *dev_cap)
2123{
2124 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED &&
2125 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
2126 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_VXLAN;
2127 else
2128 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_NONE;
2129
2130 mlx4_dbg(dev, "Tunneling offload mode is: %s\n", (dev->caps.tunnel_offload_mode
2131 == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) ? "vxlan" : "none");
2132}
2133
2134static int mlx4_validate_optimized_steering(struct mlx4_dev *dev)
2135{
2136 int i;
2137 struct mlx4_port_cap port_cap;
2138
2139 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_NOT_SUPPORTED)
2140 return -EINVAL;
2141
2142 for (i = 1; i <= dev->caps.num_ports; i++) {
2143 if (mlx4_dev_port(dev, i, &port_cap)) {
2144 mlx4_err(dev,
2145 "QUERY_DEV_CAP command failed, can't veify DMFS high rate steering.\n");
2146 } else if ((dev->caps.dmfs_high_steer_mode !=
2147 MLX4_STEERING_DMFS_A0_DEFAULT) &&
2148 (port_cap.dmfs_optimized_state ==
2149 !!(dev->caps.dmfs_high_steer_mode ==
2150 MLX4_STEERING_DMFS_A0_DISABLE))) {
2151 mlx4_err(dev,
2152 "DMFS high rate steer mode differ, driver requested %s but %s in FW.\n",
2153 dmfs_high_rate_steering_mode_str(
2154 dev->caps.dmfs_high_steer_mode),
2155 (port_cap.dmfs_optimized_state ?
2156 "enabled" : "disabled"));
2157 }
2158 }
2159
2160 return 0;
2161}
2162
2163static int mlx4_init_fw(struct mlx4_dev *dev)
2164{
2165 struct mlx4_mod_stat_cfg mlx4_cfg;
2166 int err = 0;
2167
2168 if (!mlx4_is_slave(dev)) {
2169 err = mlx4_QUERY_FW(dev);
2170 if (err) {
2171 if (err == -EACCES)
2172 mlx4_info(dev, "non-primary physical function, skipping\n");
2173 else
2174 mlx4_err(dev, "QUERY_FW command failed, aborting\n");
2175 return err;
2176 }
2177
2178 err = mlx4_load_fw(dev);
2179 if (err) {
2180 mlx4_err(dev, "Failed to start FW, aborting\n");
2181 return err;
2182 }
2183
2184 mlx4_cfg.log_pg_sz_m = 1;
2185 mlx4_cfg.log_pg_sz = 0;
2186 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg);
2187 if (err)
2188 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n");
2189 }
2190
2191 return err;
2192}
2193
2194static int mlx4_init_hca(struct mlx4_dev *dev)
2195{
2196 struct mlx4_priv *priv = mlx4_priv(dev);
2197 struct mlx4_adapter adapter;
2198 struct mlx4_dev_cap dev_cap;
2199 struct mlx4_profile profile;
2200 struct mlx4_init_hca_param init_hca;
2201 u64 icm_size;
2202 struct mlx4_config_dev_params params;
2203 int err;
2204
2205 if (!mlx4_is_slave(dev)) {
2206 err = mlx4_dev_cap(dev, &dev_cap);
2207 if (err) {
2208 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n");
2209 return err;
2210 }
2211
2212 choose_steering_mode(dev, &dev_cap);
2213 choose_tunnel_offload_mode(dev, &dev_cap);
2214
2215 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC &&
2216 mlx4_is_master(dev))
2217 dev->caps.function_caps |= MLX4_FUNC_CAP_DMFS_A0_STATIC;
2218
2219 err = mlx4_get_phys_port_id(dev);
2220 if (err)
2221 mlx4_err(dev, "Fail to get physical port id\n");
2222
2223 if (mlx4_is_master(dev))
2224 mlx4_parav_master_pf_caps(dev);
2225
2226 if (mlx4_low_memory_profile()) {
2227 mlx4_info(dev, "Running from within kdump kernel. Using low memory profile\n");
2228 profile = low_mem_profile;
2229 } else {
2230 profile = default_profile;
2231 }
2232 if (dev->caps.steering_mode ==
2233 MLX4_STEERING_MODE_DEVICE_MANAGED)
2234 profile.num_mcg = MLX4_FS_NUM_MCG;
2235
2236 icm_size = mlx4_make_profile(dev, &profile, &dev_cap,
2237 &init_hca);
2238 if ((long long) icm_size < 0) {
2239 err = icm_size;
2240 return err;
2241 }
2242
2243 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1;
2244
2245 if (enable_4k_uar) {
2246 init_hca.log_uar_sz = ilog2(dev->caps.num_uars) +
2247 PAGE_SHIFT - DEFAULT_UAR_PAGE_SHIFT;
2248 init_hca.uar_page_sz = DEFAULT_UAR_PAGE_SHIFT - 12;
2249 } else {
2250 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
2251 init_hca.uar_page_sz = PAGE_SHIFT - 12;
2252 }
2253
2254 init_hca.mw_enabled = 0;
2255 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW ||
2256 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN)
2257 init_hca.mw_enabled = INIT_HCA_TPT_MW_ENABLE;
2258
2259 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
2260 if (err)
2261 return err;
2262
2263 err = mlx4_INIT_HCA(dev, &init_hca);
2264 if (err) {
2265 mlx4_err(dev, "INIT_HCA command failed, aborting\n");
2266 goto err_free_icm;
2267 }
2268
2269 if (dev_cap.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) {
2270 err = mlx4_query_func(dev, &dev_cap);
2271 if (err < 0) {
2272 mlx4_err(dev, "QUERY_FUNC command failed, aborting.\n");
2273 goto err_close;
2274 } else if (err & MLX4_QUERY_FUNC_NUM_SYS_EQS) {
2275 dev->caps.num_eqs = dev_cap.max_eqs;
2276 dev->caps.reserved_eqs = dev_cap.reserved_eqs;
2277 dev->caps.reserved_uars = dev_cap.reserved_uars;
2278 }
2279 }
2280
2281 /*
2282 * If TS is supported by FW
2283 * read HCA frequency by QUERY_HCA command
2284 */
2285 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) {
2286 memset(&init_hca, 0, sizeof(init_hca));
2287 err = mlx4_QUERY_HCA(dev, &init_hca);
2288 if (err) {
2289 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp\n");
2290 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2291 } else {
2292 dev->caps.hca_core_clock =
2293 init_hca.hca_core_clock;
2294 }
2295
2296 /* In case we got HCA frequency 0 - disable timestamping
2297 * to avoid dividing by zero
2298 */
2299 if (!dev->caps.hca_core_clock) {
2300 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2301 mlx4_err(dev,
2302 "HCA frequency is 0 - timestamping is not supported\n");
2303 } else if (map_internal_clock(dev)) {
2304 /*
2305 * Map internal clock,
2306 * in case of failure disable timestamping
2307 */
2308 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS;
2309 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported\n");
2310 }
2311 }
2312
2313 if (dev->caps.dmfs_high_steer_mode !=
2314 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) {
2315 if (mlx4_validate_optimized_steering(dev))
2316 mlx4_warn(dev, "Optimized steering validation failed\n");
2317
2318 if (dev->caps.dmfs_high_steer_mode ==
2319 MLX4_STEERING_DMFS_A0_DISABLE) {
2320 dev->caps.dmfs_high_rate_qpn_base =
2321 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW];
2322 dev->caps.dmfs_high_rate_qpn_range =
2323 MLX4_A0_STEERING_TABLE_SIZE;
2324 }
2325
2326 mlx4_dbg(dev, "DMFS high rate steer mode is: %s\n",
2327 dmfs_high_rate_steering_mode_str(
2328 dev->caps.dmfs_high_steer_mode));
2329 }
2330 } else {
2331 err = mlx4_init_slave(dev);
2332 if (err) {
2333 if (err != -EPROBE_DEFER)
2334 mlx4_err(dev, "Failed to initialize slave\n");
2335 return err;
2336 }
2337
2338 err = mlx4_slave_cap(dev);
2339 if (err) {
2340 mlx4_err(dev, "Failed to obtain slave caps\n");
2341 goto err_close;
2342 }
2343 }
2344
2345 if (map_bf_area(dev))
2346 mlx4_dbg(dev, "Failed to map blue flame area\n");
2347
2348 /*Only the master set the ports, all the rest got it from it.*/
2349 if (!mlx4_is_slave(dev))
2350 mlx4_set_port_mask(dev);
2351
2352 err = mlx4_QUERY_ADAPTER(dev, &adapter);
2353 if (err) {
2354 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting\n");
2355 goto unmap_bf;
2356 }
2357
2358 /* Query CONFIG_DEV parameters */
2359 err = mlx4_config_dev_retrieval(dev, &params);
2360 if (err && err != -ENOTSUPP) {
2361 mlx4_err(dev, "Failed to query CONFIG_DEV parameters\n");
2362 } else if (!err) {
2363 dev->caps.rx_checksum_flags_port[1] = params.rx_csum_flags_port_1;
2364 dev->caps.rx_checksum_flags_port[2] = params.rx_csum_flags_port_2;
2365 }
2366 priv->eq_table.inta_pin = adapter.inta_pin;
2367 memcpy(dev->board_id, adapter.board_id, sizeof dev->board_id);
2368
2369 return 0;
2370
2371unmap_bf:
2372 unmap_internal_clock(dev);
2373 unmap_bf_area(dev);
2374
2375 if (mlx4_is_slave(dev)) {
2376 kfree(dev->caps.qp0_qkey);
2377 kfree(dev->caps.qp0_tunnel);
2378 kfree(dev->caps.qp0_proxy);
2379 kfree(dev->caps.qp1_tunnel);
2380 kfree(dev->caps.qp1_proxy);
2381 }
2382
2383err_close:
2384 if (mlx4_is_slave(dev))
2385 mlx4_slave_exit(dev);
2386 else
2387 mlx4_CLOSE_HCA(dev, 0);
2388
2389err_free_icm:
2390 if (!mlx4_is_slave(dev))
2391 mlx4_free_icms(dev);
2392
2393 return err;
2394}
2395
2396static int mlx4_init_counters_table(struct mlx4_dev *dev)
2397{
2398 struct mlx4_priv *priv = mlx4_priv(dev);
2399 int nent_pow2;
2400
2401 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2402 return -ENOENT;
2403
2404 if (!dev->caps.max_counters)
2405 return -ENOSPC;
2406
2407 nent_pow2 = roundup_pow_of_two(dev->caps.max_counters);
2408 /* reserve last counter index for sink counter */
2409 return mlx4_bitmap_init(&priv->counters_bitmap, nent_pow2,
2410 nent_pow2 - 1, 0,
2411 nent_pow2 - dev->caps.max_counters + 1);
2412}
2413
2414static void mlx4_cleanup_counters_table(struct mlx4_dev *dev)
2415{
2416 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2417 return;
2418
2419 if (!dev->caps.max_counters)
2420 return;
2421
2422 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap);
2423}
2424
2425static void mlx4_cleanup_default_counters(struct mlx4_dev *dev)
2426{
2427 struct mlx4_priv *priv = mlx4_priv(dev);
2428 int port;
2429
2430 for (port = 0; port < dev->caps.num_ports; port++)
2431 if (priv->def_counter[port] != -1)
2432 mlx4_counter_free(dev, priv->def_counter[port]);
2433}
2434
2435static int mlx4_allocate_default_counters(struct mlx4_dev *dev)
2436{
2437 struct mlx4_priv *priv = mlx4_priv(dev);
2438 int port, err = 0;
2439 u32 idx;
2440
2441 for (port = 0; port < dev->caps.num_ports; port++)
2442 priv->def_counter[port] = -1;
2443
2444 for (port = 0; port < dev->caps.num_ports; port++) {
2445 err = mlx4_counter_alloc(dev, &idx);
2446
2447 if (!err || err == -ENOSPC) {
2448 priv->def_counter[port] = idx;
2449 } else if (err == -ENOENT) {
2450 err = 0;
2451 continue;
2452 } else if (mlx4_is_slave(dev) && err == -EINVAL) {
2453 priv->def_counter[port] = MLX4_SINK_COUNTER_INDEX(dev);
2454 mlx4_warn(dev, "can't allocate counter from old PF driver, using index %d\n",
2455 MLX4_SINK_COUNTER_INDEX(dev));
2456 err = 0;
2457 } else {
2458 mlx4_err(dev, "%s: failed to allocate default counter port %d err %d\n",
2459 __func__, port + 1, err);
2460 mlx4_cleanup_default_counters(dev);
2461 return err;
2462 }
2463
2464 mlx4_dbg(dev, "%s: default counter index %d for port %d\n",
2465 __func__, priv->def_counter[port], port + 1);
2466 }
2467
2468 return err;
2469}
2470
2471int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
2472{
2473 struct mlx4_priv *priv = mlx4_priv(dev);
2474
2475 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2476 return -ENOENT;
2477
2478 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap);
2479 if (*idx == -1) {
2480 *idx = MLX4_SINK_COUNTER_INDEX(dev);
2481 return -ENOSPC;
2482 }
2483
2484 return 0;
2485}
2486
2487int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx)
2488{
2489 u64 out_param;
2490 int err;
2491
2492 if (mlx4_is_mfunc(dev)) {
2493 err = mlx4_cmd_imm(dev, 0, &out_param, RES_COUNTER,
2494 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES,
2495 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED);
2496 if (!err)
2497 *idx = get_param_l(&out_param);
2498
2499 return err;
2500 }
2501 return __mlx4_counter_alloc(dev, idx);
2502}
2503EXPORT_SYMBOL_GPL(mlx4_counter_alloc);
2504
2505static int __mlx4_clear_if_stat(struct mlx4_dev *dev,
2506 u8 counter_index)
2507{
2508 struct mlx4_cmd_mailbox *if_stat_mailbox;
2509 int err;
2510 u32 if_stat_in_mod = (counter_index & 0xff) | MLX4_QUERY_IF_STAT_RESET;
2511
2512 if_stat_mailbox = mlx4_alloc_cmd_mailbox(dev);
2513 if (IS_ERR(if_stat_mailbox))
2514 return PTR_ERR(if_stat_mailbox);
2515
2516 err = mlx4_cmd_box(dev, 0, if_stat_mailbox->dma, if_stat_in_mod, 0,
2517 MLX4_CMD_QUERY_IF_STAT, MLX4_CMD_TIME_CLASS_C,
2518 MLX4_CMD_NATIVE);
2519
2520 mlx4_free_cmd_mailbox(dev, if_stat_mailbox);
2521 return err;
2522}
2523
2524void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
2525{
2526 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS))
2527 return;
2528
2529 if (idx == MLX4_SINK_COUNTER_INDEX(dev))
2530 return;
2531
2532 __mlx4_clear_if_stat(dev, idx);
2533
2534 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR);
2535 return;
2536}
2537
2538void mlx4_counter_free(struct mlx4_dev *dev, u32 idx)
2539{
2540 u64 in_param = 0;
2541
2542 if (mlx4_is_mfunc(dev)) {
2543 set_param_l(&in_param, idx);
2544 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE,
2545 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A,
2546 MLX4_CMD_WRAPPED);
2547 return;
2548 }
2549 __mlx4_counter_free(dev, idx);
2550}
2551EXPORT_SYMBOL_GPL(mlx4_counter_free);
2552
2553int mlx4_get_default_counter_index(struct mlx4_dev *dev, int port)
2554{
2555 struct mlx4_priv *priv = mlx4_priv(dev);
2556
2557 return priv->def_counter[port - 1];
2558}
2559EXPORT_SYMBOL_GPL(mlx4_get_default_counter_index);
2560
2561void mlx4_set_admin_guid(struct mlx4_dev *dev, __be64 guid, int entry, int port)
2562{
2563 struct mlx4_priv *priv = mlx4_priv(dev);
2564
2565 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
2566}
2567EXPORT_SYMBOL_GPL(mlx4_set_admin_guid);
2568
2569__be64 mlx4_get_admin_guid(struct mlx4_dev *dev, int entry, int port)
2570{
2571 struct mlx4_priv *priv = mlx4_priv(dev);
2572
2573 return priv->mfunc.master.vf_admin[entry].vport[port].guid;
2574}
2575EXPORT_SYMBOL_GPL(mlx4_get_admin_guid);
2576
2577void mlx4_set_random_admin_guid(struct mlx4_dev *dev, int entry, int port)
2578{
2579 struct mlx4_priv *priv = mlx4_priv(dev);
2580 __be64 guid;
2581
2582 /* hw GUID */
2583 if (entry == 0)
2584 return;
2585
2586 get_random_bytes((char *)&guid, sizeof(guid));
2587 guid &= ~(cpu_to_be64(1ULL << 56));
2588 guid |= cpu_to_be64(1ULL << 57);
2589 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
2590}
2591
2592static int mlx4_setup_hca(struct mlx4_dev *dev)
2593{
2594 struct mlx4_priv *priv = mlx4_priv(dev);
2595 int err;
2596 int port;
2597 __be32 ib_port_default_caps;
2598
2599 err = mlx4_init_uar_table(dev);
2600 if (err) {
2601 mlx4_err(dev, "Failed to initialize user access region table, aborting\n");
2602 return err;
2603 }
2604
2605 err = mlx4_uar_alloc(dev, &priv->driver_uar);
2606 if (err) {
2607 mlx4_err(dev, "Failed to allocate driver access region, aborting\n");
2608 goto err_uar_table_free;
2609 }
2610
2611 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
2612 if (!priv->kar) {
2613 mlx4_err(dev, "Couldn't map kernel access region, aborting\n");
2614 err = -ENOMEM;
2615 goto err_uar_free;
2616 }
2617
2618 err = mlx4_init_pd_table(dev);
2619 if (err) {
2620 mlx4_err(dev, "Failed to initialize protection domain table, aborting\n");
2621 goto err_kar_unmap;
2622 }
2623
2624 err = mlx4_init_xrcd_table(dev);
2625 if (err) {
2626 mlx4_err(dev, "Failed to initialize reliable connection domain table, aborting\n");
2627 goto err_pd_table_free;
2628 }
2629
2630 err = mlx4_init_mr_table(dev);
2631 if (err) {
2632 mlx4_err(dev, "Failed to initialize memory region table, aborting\n");
2633 goto err_xrcd_table_free;
2634 }
2635
2636 if (!mlx4_is_slave(dev)) {
2637 err = mlx4_init_mcg_table(dev);
2638 if (err) {
2639 mlx4_err(dev, "Failed to initialize multicast group table, aborting\n");
2640 goto err_mr_table_free;
2641 }
2642 err = mlx4_config_mad_demux(dev);
2643 if (err) {
2644 mlx4_err(dev, "Failed in config_mad_demux, aborting\n");
2645 goto err_mcg_table_free;
2646 }
2647 }
2648
2649 err = mlx4_init_eq_table(dev);
2650 if (err) {
2651 mlx4_err(dev, "Failed to initialize event queue table, aborting\n");
2652 goto err_mcg_table_free;
2653 }
2654
2655 err = mlx4_cmd_use_events(dev);
2656 if (err) {
2657 mlx4_err(dev, "Failed to switch to event-driven firmware commands, aborting\n");
2658 goto err_eq_table_free;
2659 }
2660
2661 err = mlx4_NOP(dev);
2662 if (err) {
2663 if (dev->flags & MLX4_FLAG_MSI_X) {
2664 mlx4_warn(dev, "NOP command failed to generate MSI-X interrupt IRQ %d)\n",
2665 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
2666 mlx4_warn(dev, "Trying again without MSI-X\n");
2667 } else {
2668 mlx4_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting\n",
2669 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
2670 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
2671 }
2672
2673 goto err_cmd_poll;
2674 }
2675
2676 mlx4_dbg(dev, "NOP command IRQ test passed\n");
2677
2678 err = mlx4_init_cq_table(dev);
2679 if (err) {
2680 mlx4_err(dev, "Failed to initialize completion queue table, aborting\n");
2681 goto err_cmd_poll;
2682 }
2683
2684 err = mlx4_init_srq_table(dev);
2685 if (err) {
2686 mlx4_err(dev, "Failed to initialize shared receive queue table, aborting\n");
2687 goto err_cq_table_free;
2688 }
2689
2690 err = mlx4_init_qp_table(dev);
2691 if (err) {
2692 mlx4_err(dev, "Failed to initialize queue pair table, aborting\n");
2693 goto err_srq_table_free;
2694 }
2695
2696 if (!mlx4_is_slave(dev)) {
2697 err = mlx4_init_counters_table(dev);
2698 if (err && err != -ENOENT) {
2699 mlx4_err(dev, "Failed to initialize counters table, aborting\n");
2700 goto err_qp_table_free;
2701 }
2702 }
2703
2704 err = mlx4_allocate_default_counters(dev);
2705 if (err) {
2706 mlx4_err(dev, "Failed to allocate default counters, aborting\n");
2707 goto err_counters_table_free;
2708 }
2709
2710 if (!mlx4_is_slave(dev)) {
2711 for (port = 1; port <= dev->caps.num_ports; port++) {
2712 ib_port_default_caps = 0;
2713 err = mlx4_get_port_ib_caps(dev, port,
2714 &ib_port_default_caps);
2715 if (err)
2716 mlx4_warn(dev, "failed to get port %d default ib capabilities (%d). Continuing with caps = 0\n",
2717 port, err);
2718 dev->caps.ib_port_def_cap[port] = ib_port_default_caps;
2719
2720 /* initialize per-slave default ib port capabilities */
2721 if (mlx4_is_master(dev)) {
2722 int i;
2723 for (i = 0; i < dev->num_slaves; i++) {
2724 if (i == mlx4_master_func_num(dev))
2725 continue;
2726 priv->mfunc.master.slave_state[i].ib_cap_mask[port] =
2727 ib_port_default_caps;
2728 }
2729 }
2730
2731 if (mlx4_is_mfunc(dev))
2732 dev->caps.port_ib_mtu[port] = IB_MTU_2048;
2733 else
2734 dev->caps.port_ib_mtu[port] = IB_MTU_4096;
2735
2736 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ?
2737 dev->caps.pkey_table_len[port] : -1);
2738 if (err) {
2739 mlx4_err(dev, "Failed to set port %d, aborting\n",
2740 port);
2741 goto err_default_countes_free;
2742 }
2743 }
2744 }
2745
2746 return 0;
2747
2748err_default_countes_free:
2749 mlx4_cleanup_default_counters(dev);
2750
2751err_counters_table_free:
2752 if (!mlx4_is_slave(dev))
2753 mlx4_cleanup_counters_table(dev);
2754
2755err_qp_table_free:
2756 mlx4_cleanup_qp_table(dev);
2757
2758err_srq_table_free:
2759 mlx4_cleanup_srq_table(dev);
2760
2761err_cq_table_free:
2762 mlx4_cleanup_cq_table(dev);
2763
2764err_cmd_poll:
2765 mlx4_cmd_use_polling(dev);
2766
2767err_eq_table_free:
2768 mlx4_cleanup_eq_table(dev);
2769
2770err_mcg_table_free:
2771 if (!mlx4_is_slave(dev))
2772 mlx4_cleanup_mcg_table(dev);
2773
2774err_mr_table_free:
2775 mlx4_cleanup_mr_table(dev);
2776
2777err_xrcd_table_free:
2778 mlx4_cleanup_xrcd_table(dev);
2779
2780err_pd_table_free:
2781 mlx4_cleanup_pd_table(dev);
2782
2783err_kar_unmap:
2784 iounmap(priv->kar);
2785
2786err_uar_free:
2787 mlx4_uar_free(dev, &priv->driver_uar);
2788
2789err_uar_table_free:
2790 mlx4_cleanup_uar_table(dev);
2791 return err;
2792}
2793
2794static int mlx4_init_affinity_hint(struct mlx4_dev *dev, int port, int eqn)
2795{
2796 int requested_cpu = 0;
2797 struct mlx4_priv *priv = mlx4_priv(dev);
2798 struct mlx4_eq *eq;
2799 int off = 0;
2800 int i;
2801
2802 if (eqn > dev->caps.num_comp_vectors)
2803 return -EINVAL;
2804
2805 for (i = 1; i < port; i++)
2806 off += mlx4_get_eqs_per_port(dev, i);
2807
2808 requested_cpu = eqn - off - !!(eqn > MLX4_EQ_ASYNC);
2809
2810 /* Meaning EQs are shared, and this call comes from the second port */
2811 if (requested_cpu < 0)
2812 return 0;
2813
2814 eq = &priv->eq_table.eq[eqn];
2815
2816 if (!zalloc_cpumask_var(&eq->affinity_mask, GFP_KERNEL))
2817 return -ENOMEM;
2818
2819 cpumask_set_cpu(requested_cpu, eq->affinity_mask);
2820
2821 return 0;
2822}
2823
2824static void mlx4_enable_msi_x(struct mlx4_dev *dev)
2825{
2826 struct mlx4_priv *priv = mlx4_priv(dev);
2827 struct msix_entry *entries;
2828 int i;
2829 int port = 0;
2830
2831 if (msi_x) {
2832 int nreq = dev->caps.num_ports * num_online_cpus() + 1;
2833
2834 nreq = min_t(int, dev->caps.num_eqs - dev->caps.reserved_eqs,
2835 nreq);
2836 if (nreq > MAX_MSIX)
2837 nreq = MAX_MSIX;
2838
2839 entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
2840 if (!entries)
2841 goto no_msi;
2842
2843 for (i = 0; i < nreq; ++i)
2844 entries[i].entry = i;
2845
2846 nreq = pci_enable_msix_range(dev->persist->pdev, entries, 2,
2847 nreq);
2848
2849 if (nreq < 0 || nreq < MLX4_EQ_ASYNC) {
2850 kfree(entries);
2851 goto no_msi;
2852 }
2853 /* 1 is reserved for events (asyncrounous EQ) */
2854 dev->caps.num_comp_vectors = nreq - 1;
2855
2856 priv->eq_table.eq[MLX4_EQ_ASYNC].irq = entries[0].vector;
2857 bitmap_zero(priv->eq_table.eq[MLX4_EQ_ASYNC].actv_ports.ports,
2858 dev->caps.num_ports);
2859
2860 for (i = 0; i < dev->caps.num_comp_vectors + 1; i++) {
2861 if (i == MLX4_EQ_ASYNC)
2862 continue;
2863
2864 priv->eq_table.eq[i].irq =
2865 entries[i + 1 - !!(i > MLX4_EQ_ASYNC)].vector;
2866
2867 if (MLX4_IS_LEGACY_EQ_MODE(dev->caps)) {
2868 bitmap_fill(priv->eq_table.eq[i].actv_ports.ports,
2869 dev->caps.num_ports);
2870 /* We don't set affinity hint when there
2871 * aren't enough EQs
2872 */
2873 } else {
2874 set_bit(port,
2875 priv->eq_table.eq[i].actv_ports.ports);
2876 if (mlx4_init_affinity_hint(dev, port + 1, i))
2877 mlx4_warn(dev, "Couldn't init hint cpumask for EQ %d\n",
2878 i);
2879 }
2880 /* We divide the Eqs evenly between the two ports.
2881 * (dev->caps.num_comp_vectors / dev->caps.num_ports)
2882 * refers to the number of Eqs per port
2883 * (i.e eqs_per_port). Theoretically, we would like to
2884 * write something like (i + 1) % eqs_per_port == 0.
2885 * However, since there's an asynchronous Eq, we have
2886 * to skip over it by comparing this condition to
2887 * !!((i + 1) > MLX4_EQ_ASYNC).
2888 */
2889 if ((dev->caps.num_comp_vectors > dev->caps.num_ports) &&
2890 ((i + 1) %
2891 (dev->caps.num_comp_vectors / dev->caps.num_ports)) ==
2892 !!((i + 1) > MLX4_EQ_ASYNC))
2893 /* If dev->caps.num_comp_vectors < dev->caps.num_ports,
2894 * everything is shared anyway.
2895 */
2896 port++;
2897 }
2898
2899 dev->flags |= MLX4_FLAG_MSI_X;
2900
2901 kfree(entries);
2902 return;
2903 }
2904
2905no_msi:
2906 dev->caps.num_comp_vectors = 1;
2907
2908 BUG_ON(MLX4_EQ_ASYNC >= 2);
2909 for (i = 0; i < 2; ++i) {
2910 priv->eq_table.eq[i].irq = dev->persist->pdev->irq;
2911 if (i != MLX4_EQ_ASYNC) {
2912 bitmap_fill(priv->eq_table.eq[i].actv_ports.ports,
2913 dev->caps.num_ports);
2914 }
2915 }
2916}
2917
2918static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
2919{
2920 struct devlink *devlink = priv_to_devlink(mlx4_priv(dev));
2921 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
2922 int err;
2923
2924 err = devlink_port_register(devlink, &info->devlink_port, port);
2925 if (err)
2926 return err;
2927
2928 info->dev = dev;
2929 info->port = port;
2930 if (!mlx4_is_slave(dev)) {
2931 mlx4_init_mac_table(dev, &info->mac_table);
2932 mlx4_init_vlan_table(dev, &info->vlan_table);
2933 mlx4_init_roce_gid_table(dev, &info->gid_table);
2934 info->base_qpn = mlx4_get_base_qpn(dev, port);
2935 }
2936
2937 sprintf(info->dev_name, "mlx4_port%d", port);
2938 info->port_attr.attr.name = info->dev_name;
2939 if (mlx4_is_mfunc(dev))
2940 info->port_attr.attr.mode = S_IRUGO;
2941 else {
2942 info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
2943 info->port_attr.store = set_port_type;
2944 }
2945 info->port_attr.show = show_port_type;
2946 sysfs_attr_init(&info->port_attr.attr);
2947
2948 err = device_create_file(&dev->persist->pdev->dev, &info->port_attr);
2949 if (err) {
2950 mlx4_err(dev, "Failed to create file for port %d\n", port);
2951 devlink_port_unregister(&info->devlink_port);
2952 info->port = -1;
2953 }
2954
2955 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port);
2956 info->port_mtu_attr.attr.name = info->dev_mtu_name;
2957 if (mlx4_is_mfunc(dev))
2958 info->port_mtu_attr.attr.mode = S_IRUGO;
2959 else {
2960 info->port_mtu_attr.attr.mode = S_IRUGO | S_IWUSR;
2961 info->port_mtu_attr.store = set_port_ib_mtu;
2962 }
2963 info->port_mtu_attr.show = show_port_ib_mtu;
2964 sysfs_attr_init(&info->port_mtu_attr.attr);
2965
2966 err = device_create_file(&dev->persist->pdev->dev,
2967 &info->port_mtu_attr);
2968 if (err) {
2969 mlx4_err(dev, "Failed to create mtu file for port %d\n", port);
2970 device_remove_file(&info->dev->persist->pdev->dev,
2971 &info->port_attr);
2972 info->port = -1;
2973 }
2974
2975 return err;
2976}
2977
2978static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
2979{
2980 if (info->port < 0)
2981 return;
2982
2983 device_remove_file(&info->dev->persist->pdev->dev, &info->port_attr);
2984 device_remove_file(&info->dev->persist->pdev->dev,
2985 &info->port_mtu_attr);
2986#ifdef CONFIG_RFS_ACCEL
2987 free_irq_cpu_rmap(info->rmap);
2988 info->rmap = NULL;
2989#endif
2990}
2991
2992static int mlx4_init_steering(struct mlx4_dev *dev)
2993{
2994 struct mlx4_priv *priv = mlx4_priv(dev);
2995 int num_entries = dev->caps.num_ports;
2996 int i, j;
2997
2998 priv->steer = kzalloc(sizeof(struct mlx4_steer) * num_entries, GFP_KERNEL);
2999 if (!priv->steer)
3000 return -ENOMEM;
3001
3002 for (i = 0; i < num_entries; i++)
3003 for (j = 0; j < MLX4_NUM_STEERS; j++) {
3004 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]);
3005 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]);
3006 }
3007 return 0;
3008}
3009
3010static void mlx4_clear_steering(struct mlx4_dev *dev)
3011{
3012 struct mlx4_priv *priv = mlx4_priv(dev);
3013 struct mlx4_steer_index *entry, *tmp_entry;
3014 struct mlx4_promisc_qp *pqp, *tmp_pqp;
3015 int num_entries = dev->caps.num_ports;
3016 int i, j;
3017
3018 for (i = 0; i < num_entries; i++) {
3019 for (j = 0; j < MLX4_NUM_STEERS; j++) {
3020 list_for_each_entry_safe(pqp, tmp_pqp,
3021 &priv->steer[i].promisc_qps[j],
3022 list) {
3023 list_del(&pqp->list);
3024 kfree(pqp);
3025 }
3026 list_for_each_entry_safe(entry, tmp_entry,
3027 &priv->steer[i].steer_entries[j],
3028 list) {
3029 list_del(&entry->list);
3030 list_for_each_entry_safe(pqp, tmp_pqp,
3031 &entry->duplicates,
3032 list) {
3033 list_del(&pqp->list);
3034 kfree(pqp);
3035 }
3036 kfree(entry);
3037 }
3038 }
3039 }
3040 kfree(priv->steer);
3041}
3042
3043static int extended_func_num(struct pci_dev *pdev)
3044{
3045 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn);
3046}
3047
3048#define MLX4_OWNER_BASE 0x8069c
3049#define MLX4_OWNER_SIZE 4
3050
3051static int mlx4_get_ownership(struct mlx4_dev *dev)
3052{
3053 void __iomem *owner;
3054 u32 ret;
3055
3056 if (pci_channel_offline(dev->persist->pdev))
3057 return -EIO;
3058
3059 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +
3060 MLX4_OWNER_BASE,
3061 MLX4_OWNER_SIZE);
3062 if (!owner) {
3063 mlx4_err(dev, "Failed to obtain ownership bit\n");
3064 return -ENOMEM;
3065 }
3066
3067 ret = readl(owner);
3068 iounmap(owner);
3069 return (int) !!ret;
3070}
3071
3072static void mlx4_free_ownership(struct mlx4_dev *dev)
3073{
3074 void __iomem *owner;
3075
3076 if (pci_channel_offline(dev->persist->pdev))
3077 return;
3078
3079 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) +
3080 MLX4_OWNER_BASE,
3081 MLX4_OWNER_SIZE);
3082 if (!owner) {
3083 mlx4_err(dev, "Failed to obtain ownership bit\n");
3084 return;
3085 }
3086 writel(0, owner);
3087 msleep(1000);
3088 iounmap(owner);
3089}
3090
3091#define SRIOV_VALID_STATE(flags) (!!((flags) & MLX4_FLAG_SRIOV) ==\
3092 !!((flags) & MLX4_FLAG_MASTER))
3093
3094static u64 mlx4_enable_sriov(struct mlx4_dev *dev, struct pci_dev *pdev,
3095 u8 total_vfs, int existing_vfs, int reset_flow)
3096{
3097 u64 dev_flags = dev->flags;
3098 int err = 0;
3099 int fw_enabled_sriov_vfs = min(pci_sriov_get_totalvfs(pdev),
3100 MLX4_MAX_NUM_VF);
3101
3102 if (reset_flow) {
3103 dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs),
3104 GFP_KERNEL);
3105 if (!dev->dev_vfs)
3106 goto free_mem;
3107 return dev_flags;
3108 }
3109
3110 atomic_inc(&pf_loading);
3111 if (dev->flags & MLX4_FLAG_SRIOV) {
3112 if (existing_vfs != total_vfs) {
3113 mlx4_err(dev, "SR-IOV was already enabled, but with num_vfs (%d) different than requested (%d)\n",
3114 existing_vfs, total_vfs);
3115 total_vfs = existing_vfs;
3116 }
3117 }
3118
3119 dev->dev_vfs = kzalloc(total_vfs * sizeof(*dev->dev_vfs), GFP_KERNEL);
3120 if (NULL == dev->dev_vfs) {
3121 mlx4_err(dev, "Failed to allocate memory for VFs\n");
3122 goto disable_sriov;
3123 }
3124
3125 if (!(dev->flags & MLX4_FLAG_SRIOV)) {
3126 if (total_vfs > fw_enabled_sriov_vfs) {
3127 mlx4_err(dev, "requested vfs (%d) > available vfs (%d). Continuing without SR_IOV\n",
3128 total_vfs, fw_enabled_sriov_vfs);
3129 err = -ENOMEM;
3130 goto disable_sriov;
3131 }
3132 mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n", total_vfs);
3133 err = pci_enable_sriov(pdev, total_vfs);
3134 }
3135 if (err) {
3136 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d)\n",
3137 err);
3138 goto disable_sriov;
3139 } else {
3140 mlx4_warn(dev, "Running in master mode\n");
3141 dev_flags |= MLX4_FLAG_SRIOV |
3142 MLX4_FLAG_MASTER;
3143 dev_flags &= ~MLX4_FLAG_SLAVE;
3144 dev->persist->num_vfs = total_vfs;
3145 }
3146 return dev_flags;
3147
3148disable_sriov:
3149 atomic_dec(&pf_loading);
3150free_mem:
3151 dev->persist->num_vfs = 0;
3152 kfree(dev->dev_vfs);
3153 dev->dev_vfs = NULL;
3154 return dev_flags & ~MLX4_FLAG_MASTER;
3155}
3156
3157enum {
3158 MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64 = -1,
3159};
3160
3161static int mlx4_check_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap,
3162 int *nvfs)
3163{
3164 int requested_vfs = nvfs[0] + nvfs[1] + nvfs[2];
3165 /* Checking for 64 VFs as a limitation of CX2 */
3166 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_80_VFS) &&
3167 requested_vfs >= 64) {
3168 mlx4_err(dev, "Requested %d VFs, but FW does not support more than 64\n",
3169 requested_vfs);
3170 return MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64;
3171 }
3172 return 0;
3173}
3174
3175static int mlx4_pci_enable_device(struct mlx4_dev *dev)
3176{
3177 struct pci_dev *pdev = dev->persist->pdev;
3178 int err = 0;
3179
3180 mutex_lock(&dev->persist->pci_status_mutex);
3181 if (dev->persist->pci_status == MLX4_PCI_STATUS_DISABLED) {
3182 err = pci_enable_device(pdev);
3183 if (!err)
3184 dev->persist->pci_status = MLX4_PCI_STATUS_ENABLED;
3185 }
3186 mutex_unlock(&dev->persist->pci_status_mutex);
3187
3188 return err;
3189}
3190
3191static void mlx4_pci_disable_device(struct mlx4_dev *dev)
3192{
3193 struct pci_dev *pdev = dev->persist->pdev;
3194
3195 mutex_lock(&dev->persist->pci_status_mutex);
3196 if (dev->persist->pci_status == MLX4_PCI_STATUS_ENABLED) {
3197 pci_disable_device(pdev);
3198 dev->persist->pci_status = MLX4_PCI_STATUS_DISABLED;
3199 }
3200 mutex_unlock(&dev->persist->pci_status_mutex);
3201}
3202
3203static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data,
3204 int total_vfs, int *nvfs, struct mlx4_priv *priv,
3205 int reset_flow)
3206{
3207 struct mlx4_dev *dev;
3208 unsigned sum = 0;
3209 int err;
3210 int port;
3211 int i;
3212 struct mlx4_dev_cap *dev_cap = NULL;
3213 int existing_vfs = 0;
3214
3215 dev = &priv->dev;
3216
3217 INIT_LIST_HEAD(&priv->ctx_list);
3218 spin_lock_init(&priv->ctx_lock);
3219
3220 mutex_init(&priv->port_mutex);
3221 mutex_init(&priv->bond_mutex);
3222
3223 INIT_LIST_HEAD(&priv->pgdir_list);
3224 mutex_init(&priv->pgdir_mutex);
3225
3226 INIT_LIST_HEAD(&priv->bf_list);
3227 mutex_init(&priv->bf_mutex);
3228
3229 dev->rev_id = pdev->revision;
3230 dev->numa_node = dev_to_node(&pdev->dev);
3231
3232 /* Detect if this device is a virtual function */
3233 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
3234 mlx4_warn(dev, "Detected virtual function - running in slave mode\n");
3235 dev->flags |= MLX4_FLAG_SLAVE;
3236 } else {
3237 /* We reset the device and enable SRIOV only for physical
3238 * devices. Try to claim ownership on the device;
3239 * if already taken, skip -- do not allow multiple PFs */
3240 err = mlx4_get_ownership(dev);
3241 if (err) {
3242 if (err < 0)
3243 return err;
3244 else {
3245 mlx4_warn(dev, "Multiple PFs not yet supported - Skipping PF\n");
3246 return -EINVAL;
3247 }
3248 }
3249
3250 atomic_set(&priv->opreq_count, 0);
3251 INIT_WORK(&priv->opreq_task, mlx4_opreq_action);
3252
3253 /*
3254 * Now reset the HCA before we touch the PCI capabilities or
3255 * attempt a firmware command, since a boot ROM may have left
3256 * the HCA in an undefined state.
3257 */
3258 err = mlx4_reset(dev);
3259 if (err) {
3260 mlx4_err(dev, "Failed to reset HCA, aborting\n");
3261 goto err_sriov;
3262 }
3263
3264 if (total_vfs) {
3265 dev->flags = MLX4_FLAG_MASTER;
3266 existing_vfs = pci_num_vf(pdev);
3267 if (existing_vfs)
3268 dev->flags |= MLX4_FLAG_SRIOV;
3269 dev->persist->num_vfs = total_vfs;
3270 }
3271 }
3272
3273 /* on load remove any previous indication of internal error,
3274 * device is up.
3275 */
3276 dev->persist->state = MLX4_DEVICE_STATE_UP;
3277
3278slave_start:
3279 err = mlx4_cmd_init(dev);
3280 if (err) {
3281 mlx4_err(dev, "Failed to init command interface, aborting\n");
3282 goto err_sriov;
3283 }
3284
3285 /* In slave functions, the communication channel must be initialized
3286 * before posting commands. Also, init num_slaves before calling
3287 * mlx4_init_hca */
3288 if (mlx4_is_mfunc(dev)) {
3289 if (mlx4_is_master(dev)) {
3290 dev->num_slaves = MLX4_MAX_NUM_SLAVES;
3291
3292 } else {
3293 dev->num_slaves = 0;
3294 err = mlx4_multi_func_init(dev);
3295 if (err) {
3296 mlx4_err(dev, "Failed to init slave mfunc interface, aborting\n");
3297 goto err_cmd;
3298 }
3299 }
3300 }
3301
3302 err = mlx4_init_fw(dev);
3303 if (err) {
3304 mlx4_err(dev, "Failed to init fw, aborting.\n");
3305 goto err_mfunc;
3306 }
3307
3308 if (mlx4_is_master(dev)) {
3309 /* when we hit the goto slave_start below, dev_cap already initialized */
3310 if (!dev_cap) {
3311 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL);
3312
3313 if (!dev_cap) {
3314 err = -ENOMEM;
3315 goto err_fw;
3316 }
3317
3318 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
3319 if (err) {
3320 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
3321 goto err_fw;
3322 }
3323
3324 if (mlx4_check_dev_cap(dev, dev_cap, nvfs))
3325 goto err_fw;
3326
3327 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) {
3328 u64 dev_flags = mlx4_enable_sriov(dev, pdev,
3329 total_vfs,
3330 existing_vfs,
3331 reset_flow);
3332
3333 mlx4_close_fw(dev);
3334 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3335 dev->flags = dev_flags;
3336 if (!SRIOV_VALID_STATE(dev->flags)) {
3337 mlx4_err(dev, "Invalid SRIOV state\n");
3338 goto err_sriov;
3339 }
3340 err = mlx4_reset(dev);
3341 if (err) {
3342 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
3343 goto err_sriov;
3344 }
3345 goto slave_start;
3346 }
3347 } else {
3348 /* Legacy mode FW requires SRIOV to be enabled before
3349 * doing QUERY_DEV_CAP, since max_eq's value is different if
3350 * SRIOV is enabled.
3351 */
3352 memset(dev_cap, 0, sizeof(*dev_cap));
3353 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
3354 if (err) {
3355 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
3356 goto err_fw;
3357 }
3358
3359 if (mlx4_check_dev_cap(dev, dev_cap, nvfs))
3360 goto err_fw;
3361 }
3362 }
3363
3364 err = mlx4_init_hca(dev);
3365 if (err) {
3366 if (err == -EACCES) {
3367 /* Not primary Physical function
3368 * Running in slave mode */
3369 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3370 /* We're not a PF */
3371 if (dev->flags & MLX4_FLAG_SRIOV) {
3372 if (!existing_vfs)
3373 pci_disable_sriov(pdev);
3374 if (mlx4_is_master(dev) && !reset_flow)
3375 atomic_dec(&pf_loading);
3376 dev->flags &= ~MLX4_FLAG_SRIOV;
3377 }
3378 if (!mlx4_is_slave(dev))
3379 mlx4_free_ownership(dev);
3380 dev->flags |= MLX4_FLAG_SLAVE;
3381 dev->flags &= ~MLX4_FLAG_MASTER;
3382 goto slave_start;
3383 } else
3384 goto err_fw;
3385 }
3386
3387 if (mlx4_is_master(dev) && (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) {
3388 u64 dev_flags = mlx4_enable_sriov(dev, pdev, total_vfs,
3389 existing_vfs, reset_flow);
3390
3391 if ((dev->flags ^ dev_flags) & (MLX4_FLAG_MASTER | MLX4_FLAG_SLAVE)) {
3392 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_VHCR);
3393 dev->flags = dev_flags;
3394 err = mlx4_cmd_init(dev);
3395 if (err) {
3396 /* Only VHCR is cleaned up, so could still
3397 * send FW commands
3398 */
3399 mlx4_err(dev, "Failed to init VHCR command interface, aborting\n");
3400 goto err_close;
3401 }
3402 } else {
3403 dev->flags = dev_flags;
3404 }
3405
3406 if (!SRIOV_VALID_STATE(dev->flags)) {
3407 mlx4_err(dev, "Invalid SRIOV state\n");
3408 goto err_close;
3409 }
3410 }
3411
3412 /* check if the device is functioning at its maximum possible speed.
3413 * No return code for this call, just warn the user in case of PCI
3414 * express device capabilities are under-satisfied by the bus.
3415 */
3416 if (!mlx4_is_slave(dev))
3417 mlx4_check_pcie_caps(dev);
3418
3419 /* In master functions, the communication channel must be initialized
3420 * after obtaining its address from fw */
3421 if (mlx4_is_master(dev)) {
3422 if (dev->caps.num_ports < 2 &&
3423 num_vfs_argc > 1) {
3424 err = -EINVAL;
3425 mlx4_err(dev,
3426 "Error: Trying to configure VFs on port 2, but HCA has only %d physical ports\n",
3427 dev->caps.num_ports);
3428 goto err_close;
3429 }
3430 memcpy(dev->persist->nvfs, nvfs, sizeof(dev->persist->nvfs));
3431
3432 for (i = 0;
3433 i < sizeof(dev->persist->nvfs)/
3434 sizeof(dev->persist->nvfs[0]); i++) {
3435 unsigned j;
3436
3437 for (j = 0; j < dev->persist->nvfs[i]; ++sum, ++j) {
3438 dev->dev_vfs[sum].min_port = i < 2 ? i + 1 : 1;
3439 dev->dev_vfs[sum].n_ports = i < 2 ? 1 :
3440 dev->caps.num_ports;
3441 }
3442 }
3443
3444 /* In master functions, the communication channel
3445 * must be initialized after obtaining its address from fw
3446 */
3447 err = mlx4_multi_func_init(dev);
3448 if (err) {
3449 mlx4_err(dev, "Failed to init master mfunc interface, aborting.\n");
3450 goto err_close;
3451 }
3452 }
3453
3454 err = mlx4_alloc_eq_table(dev);
3455 if (err)
3456 goto err_master_mfunc;
3457
3458 bitmap_zero(priv->msix_ctl.pool_bm, MAX_MSIX);
3459 mutex_init(&priv->msix_ctl.pool_lock);
3460
3461 mlx4_enable_msi_x(dev);
3462 if ((mlx4_is_mfunc(dev)) &&
3463 !(dev->flags & MLX4_FLAG_MSI_X)) {
3464 err = -ENOSYS;
3465 mlx4_err(dev, "INTx is not supported in multi-function mode, aborting\n");
3466 goto err_free_eq;
3467 }
3468
3469 if (!mlx4_is_slave(dev)) {
3470 err = mlx4_init_steering(dev);
3471 if (err)
3472 goto err_disable_msix;
3473 }
3474
3475 err = mlx4_setup_hca(dev);
3476 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) &&
3477 !mlx4_is_mfunc(dev)) {
3478 dev->flags &= ~MLX4_FLAG_MSI_X;
3479 dev->caps.num_comp_vectors = 1;
3480 pci_disable_msix(pdev);
3481 err = mlx4_setup_hca(dev);
3482 }
3483
3484 if (err)
3485 goto err_steer;
3486
3487 mlx4_init_quotas(dev);
3488 /* When PF resources are ready arm its comm channel to enable
3489 * getting commands
3490 */
3491 if (mlx4_is_master(dev)) {
3492 err = mlx4_ARM_COMM_CHANNEL(dev);
3493 if (err) {
3494 mlx4_err(dev, " Failed to arm comm channel eq: %x\n",
3495 err);
3496 goto err_steer;
3497 }
3498 }
3499
3500 for (port = 1; port <= dev->caps.num_ports; port++) {
3501 err = mlx4_init_port_info(dev, port);
3502 if (err)
3503 goto err_port;
3504 }
3505
3506 priv->v2p.port1 = 1;
3507 priv->v2p.port2 = 2;
3508
3509 err = mlx4_register_device(dev);
3510 if (err)
3511 goto err_port;
3512
3513 mlx4_request_modules(dev);
3514
3515 mlx4_sense_init(dev);
3516 mlx4_start_sense(dev);
3517
3518 priv->removed = 0;
3519
3520 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow)
3521 atomic_dec(&pf_loading);
3522
3523 kfree(dev_cap);
3524 return 0;
3525
3526err_port:
3527 for (--port; port >= 1; --port)
3528 mlx4_cleanup_port_info(&priv->port[port]);
3529
3530 mlx4_cleanup_default_counters(dev);
3531 if (!mlx4_is_slave(dev))
3532 mlx4_cleanup_counters_table(dev);
3533 mlx4_cleanup_qp_table(dev);
3534 mlx4_cleanup_srq_table(dev);
3535 mlx4_cleanup_cq_table(dev);
3536 mlx4_cmd_use_polling(dev);
3537 mlx4_cleanup_eq_table(dev);
3538 mlx4_cleanup_mcg_table(dev);
3539 mlx4_cleanup_mr_table(dev);
3540 mlx4_cleanup_xrcd_table(dev);
3541 mlx4_cleanup_pd_table(dev);
3542 mlx4_cleanup_uar_table(dev);
3543
3544err_steer:
3545 if (!mlx4_is_slave(dev))
3546 mlx4_clear_steering(dev);
3547
3548err_disable_msix:
3549 if (dev->flags & MLX4_FLAG_MSI_X)
3550 pci_disable_msix(pdev);
3551
3552err_free_eq:
3553 mlx4_free_eq_table(dev);
3554
3555err_master_mfunc:
3556 if (mlx4_is_master(dev)) {
3557 mlx4_free_resource_tracker(dev, RES_TR_FREE_STRUCTS_ONLY);
3558 mlx4_multi_func_cleanup(dev);
3559 }
3560
3561 if (mlx4_is_slave(dev)) {
3562 kfree(dev->caps.qp0_qkey);
3563 kfree(dev->caps.qp0_tunnel);
3564 kfree(dev->caps.qp0_proxy);
3565 kfree(dev->caps.qp1_tunnel);
3566 kfree(dev->caps.qp1_proxy);
3567 }
3568
3569err_close:
3570 mlx4_close_hca(dev);
3571
3572err_fw:
3573 mlx4_close_fw(dev);
3574
3575err_mfunc:
3576 if (mlx4_is_slave(dev))
3577 mlx4_multi_func_cleanup(dev);
3578
3579err_cmd:
3580 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3581
3582err_sriov:
3583 if (dev->flags & MLX4_FLAG_SRIOV && !existing_vfs) {
3584 pci_disable_sriov(pdev);
3585 dev->flags &= ~MLX4_FLAG_SRIOV;
3586 }
3587
3588 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow)
3589 atomic_dec(&pf_loading);
3590
3591 kfree(priv->dev.dev_vfs);
3592
3593 if (!mlx4_is_slave(dev))
3594 mlx4_free_ownership(dev);
3595
3596 kfree(dev_cap);
3597 return err;
3598}
3599
3600static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data,
3601 struct mlx4_priv *priv)
3602{
3603 int err;
3604 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3605 int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3606 const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = {
3607 {2, 0, 0}, {0, 1, 2}, {0, 1, 2} };
3608 unsigned total_vfs = 0;
3609 unsigned int i;
3610
3611 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev));
3612
3613 err = mlx4_pci_enable_device(&priv->dev);
3614 if (err) {
3615 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
3616 return err;
3617 }
3618
3619 /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS
3620 * per port, we must limit the number of VFs to 63 (since their are
3621 * 128 MACs)
3622 */
3623 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) && i < num_vfs_argc;
3624 total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) {
3625 nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i];
3626 if (nvfs[i] < 0) {
3627 dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n");
3628 err = -EINVAL;
3629 goto err_disable_pdev;
3630 }
3631 }
3632 for (i = 0; i < sizeof(prb_vf)/sizeof(prb_vf[0]) && i < probe_vfs_argc;
3633 i++) {
3634 prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i];
3635 if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) {
3636 dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n");
3637 err = -EINVAL;
3638 goto err_disable_pdev;
3639 }
3640 }
3641 if (total_vfs > MLX4_MAX_NUM_VF) {
3642 dev_err(&pdev->dev,
3643 "Requested more VF's (%d) than allowed by hw (%d)\n",
3644 total_vfs, MLX4_MAX_NUM_VF);
3645 err = -EINVAL;
3646 goto err_disable_pdev;
3647 }
3648
3649 for (i = 0; i < MLX4_MAX_PORTS; i++) {
3650 if (nvfs[i] + nvfs[2] > MLX4_MAX_NUM_VF_P_PORT) {
3651 dev_err(&pdev->dev,
3652 "Requested more VF's (%d) for port (%d) than allowed by driver (%d)\n",
3653 nvfs[i] + nvfs[2], i + 1,
3654 MLX4_MAX_NUM_VF_P_PORT);
3655 err = -EINVAL;
3656 goto err_disable_pdev;
3657 }
3658 }
3659
3660 /* Check for BARs. */
3661 if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) &&
3662 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
3663 dev_err(&pdev->dev, "Missing DCS, aborting (driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n",
3664 pci_dev_data, pci_resource_flags(pdev, 0));
3665 err = -ENODEV;
3666 goto err_disable_pdev;
3667 }
3668 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
3669 dev_err(&pdev->dev, "Missing UAR, aborting\n");
3670 err = -ENODEV;
3671 goto err_disable_pdev;
3672 }
3673
3674 err = pci_request_regions(pdev, DRV_NAME);
3675 if (err) {
3676 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
3677 goto err_disable_pdev;
3678 }
3679
3680 pci_set_master(pdev);
3681
3682 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
3683 if (err) {
3684 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
3685 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3686 if (err) {
3687 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
3688 goto err_release_regions;
3689 }
3690 }
3691 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
3692 if (err) {
3693 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
3694 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3695 if (err) {
3696 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, aborting\n");
3697 goto err_release_regions;
3698 }
3699 }
3700
3701 /* Allow large DMA segments, up to the firmware limit of 1 GB */
3702 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024);
3703 /* Detect if this device is a virtual function */
3704 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) {
3705 /* When acting as pf, we normally skip vfs unless explicitly
3706 * requested to probe them.
3707 */
3708 if (total_vfs) {
3709 unsigned vfs_offset = 0;
3710
3711 for (i = 0; i < sizeof(nvfs)/sizeof(nvfs[0]) &&
3712 vfs_offset + nvfs[i] < extended_func_num(pdev);
3713 vfs_offset += nvfs[i], i++)
3714 ;
3715 if (i == sizeof(nvfs)/sizeof(nvfs[0])) {
3716 err = -ENODEV;
3717 goto err_release_regions;
3718 }
3719 if ((extended_func_num(pdev) - vfs_offset)
3720 > prb_vf[i]) {
3721 dev_warn(&pdev->dev, "Skipping virtual function:%d\n",
3722 extended_func_num(pdev));
3723 err = -ENODEV;
3724 goto err_release_regions;
3725 }
3726 }
3727 }
3728
3729 err = mlx4_catas_init(&priv->dev);
3730 if (err)
3731 goto err_release_regions;
3732
3733 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 0);
3734 if (err)
3735 goto err_catas;
3736
3737 return 0;
3738
3739err_catas:
3740 mlx4_catas_end(&priv->dev);
3741
3742err_release_regions:
3743 pci_release_regions(pdev);
3744
3745err_disable_pdev:
3746 mlx4_pci_disable_device(&priv->dev);
3747 pci_set_drvdata(pdev, NULL);
3748 return err;
3749}
3750
3751static int mlx4_devlink_port_type_set(struct devlink_port *devlink_port,
3752 enum devlink_port_type port_type)
3753{
3754 struct mlx4_port_info *info = container_of(devlink_port,
3755 struct mlx4_port_info,
3756 devlink_port);
3757 enum mlx4_port_type mlx4_port_type;
3758
3759 switch (port_type) {
3760 case DEVLINK_PORT_TYPE_AUTO:
3761 mlx4_port_type = MLX4_PORT_TYPE_AUTO;
3762 break;
3763 case DEVLINK_PORT_TYPE_ETH:
3764 mlx4_port_type = MLX4_PORT_TYPE_ETH;
3765 break;
3766 case DEVLINK_PORT_TYPE_IB:
3767 mlx4_port_type = MLX4_PORT_TYPE_IB;
3768 break;
3769 default:
3770 return -EOPNOTSUPP;
3771 }
3772
3773 return __set_port_type(info, mlx4_port_type);
3774}
3775
3776static const struct devlink_ops mlx4_devlink_ops = {
3777 .port_type_set = mlx4_devlink_port_type_set,
3778};
3779
3780static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
3781{
3782 struct devlink *devlink;
3783 struct mlx4_priv *priv;
3784 struct mlx4_dev *dev;
3785 int ret;
3786
3787 printk_once(KERN_INFO "%s", mlx4_version);
3788
3789 devlink = devlink_alloc(&mlx4_devlink_ops, sizeof(*priv));
3790 if (!devlink)
3791 return -ENOMEM;
3792 priv = devlink_priv(devlink);
3793
3794 dev = &priv->dev;
3795 dev->persist = kzalloc(sizeof(*dev->persist), GFP_KERNEL);
3796 if (!dev->persist) {
3797 ret = -ENOMEM;
3798 goto err_devlink_free;
3799 }
3800 dev->persist->pdev = pdev;
3801 dev->persist->dev = dev;
3802 pci_set_drvdata(pdev, dev->persist);
3803 priv->pci_dev_data = id->driver_data;
3804 mutex_init(&dev->persist->device_state_mutex);
3805 mutex_init(&dev->persist->interface_state_mutex);
3806 mutex_init(&dev->persist->pci_status_mutex);
3807
3808 ret = devlink_register(devlink, &pdev->dev);
3809 if (ret)
3810 goto err_persist_free;
3811
3812 ret = __mlx4_init_one(pdev, id->driver_data, priv);
3813 if (ret)
3814 goto err_devlink_unregister;
3815
3816 pci_save_state(pdev);
3817 return 0;
3818
3819err_devlink_unregister:
3820 devlink_unregister(devlink);
3821err_persist_free:
3822 kfree(dev->persist);
3823err_devlink_free:
3824 devlink_free(devlink);
3825 return ret;
3826}
3827
3828static void mlx4_clean_dev(struct mlx4_dev *dev)
3829{
3830 struct mlx4_dev_persistent *persist = dev->persist;
3831 struct mlx4_priv *priv = mlx4_priv(dev);
3832 unsigned long flags = (dev->flags & RESET_PERSIST_MASK_FLAGS);
3833
3834 memset(priv, 0, sizeof(*priv));
3835 priv->dev.persist = persist;
3836 priv->dev.flags = flags;
3837}
3838
3839static void mlx4_unload_one(struct pci_dev *pdev)
3840{
3841 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3842 struct mlx4_dev *dev = persist->dev;
3843 struct mlx4_priv *priv = mlx4_priv(dev);
3844 int pci_dev_data;
3845 int p, i;
3846
3847 if (priv->removed)
3848 return;
3849
3850 /* saving current ports type for further use */
3851 for (i = 0; i < dev->caps.num_ports; i++) {
3852 dev->persist->curr_port_type[i] = dev->caps.port_type[i + 1];
3853 dev->persist->curr_port_poss_type[i] = dev->caps.
3854 possible_type[i + 1];
3855 }
3856
3857 pci_dev_data = priv->pci_dev_data;
3858
3859 mlx4_stop_sense(dev);
3860 mlx4_unregister_device(dev);
3861
3862 for (p = 1; p <= dev->caps.num_ports; p++) {
3863 mlx4_cleanup_port_info(&priv->port[p]);
3864 mlx4_CLOSE_PORT(dev, p);
3865 }
3866
3867 if (mlx4_is_master(dev))
3868 mlx4_free_resource_tracker(dev,
3869 RES_TR_FREE_SLAVES_ONLY);
3870
3871 mlx4_cleanup_default_counters(dev);
3872 if (!mlx4_is_slave(dev))
3873 mlx4_cleanup_counters_table(dev);
3874 mlx4_cleanup_qp_table(dev);
3875 mlx4_cleanup_srq_table(dev);
3876 mlx4_cleanup_cq_table(dev);
3877 mlx4_cmd_use_polling(dev);
3878 mlx4_cleanup_eq_table(dev);
3879 mlx4_cleanup_mcg_table(dev);
3880 mlx4_cleanup_mr_table(dev);
3881 mlx4_cleanup_xrcd_table(dev);
3882 mlx4_cleanup_pd_table(dev);
3883
3884 if (mlx4_is_master(dev))
3885 mlx4_free_resource_tracker(dev,
3886 RES_TR_FREE_STRUCTS_ONLY);
3887
3888 iounmap(priv->kar);
3889 mlx4_uar_free(dev, &priv->driver_uar);
3890 mlx4_cleanup_uar_table(dev);
3891 if (!mlx4_is_slave(dev))
3892 mlx4_clear_steering(dev);
3893 mlx4_free_eq_table(dev);
3894 if (mlx4_is_master(dev))
3895 mlx4_multi_func_cleanup(dev);
3896 mlx4_close_hca(dev);
3897 mlx4_close_fw(dev);
3898 if (mlx4_is_slave(dev))
3899 mlx4_multi_func_cleanup(dev);
3900 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL);
3901
3902 if (dev->flags & MLX4_FLAG_MSI_X)
3903 pci_disable_msix(pdev);
3904
3905 if (!mlx4_is_slave(dev))
3906 mlx4_free_ownership(dev);
3907
3908 kfree(dev->caps.qp0_qkey);
3909 kfree(dev->caps.qp0_tunnel);
3910 kfree(dev->caps.qp0_proxy);
3911 kfree(dev->caps.qp1_tunnel);
3912 kfree(dev->caps.qp1_proxy);
3913 kfree(dev->dev_vfs);
3914
3915 mlx4_clean_dev(dev);
3916 priv->pci_dev_data = pci_dev_data;
3917 priv->removed = 1;
3918}
3919
3920static void mlx4_remove_one(struct pci_dev *pdev)
3921{
3922 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3923 struct mlx4_dev *dev = persist->dev;
3924 struct mlx4_priv *priv = mlx4_priv(dev);
3925 struct devlink *devlink = priv_to_devlink(priv);
3926 int active_vfs = 0;
3927
3928 mutex_lock(&persist->interface_state_mutex);
3929 persist->interface_state |= MLX4_INTERFACE_STATE_DELETION;
3930 mutex_unlock(&persist->interface_state_mutex);
3931
3932 /* Disabling SR-IOV is not allowed while there are active vf's */
3933 if (mlx4_is_master(dev) && dev->flags & MLX4_FLAG_SRIOV) {
3934 active_vfs = mlx4_how_many_lives_vf(dev);
3935 if (active_vfs) {
3936 pr_warn("Removing PF when there are active VF's !!\n");
3937 pr_warn("Will not disable SR-IOV.\n");
3938 }
3939 }
3940
3941 /* device marked to be under deletion running now without the lock
3942 * letting other tasks to be terminated
3943 */
3944 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
3945 mlx4_unload_one(pdev);
3946 else
3947 mlx4_info(dev, "%s: interface is down\n", __func__);
3948 mlx4_catas_end(dev);
3949 if (dev->flags & MLX4_FLAG_SRIOV && !active_vfs) {
3950 mlx4_warn(dev, "Disabling SR-IOV\n");
3951 pci_disable_sriov(pdev);
3952 }
3953
3954 pci_release_regions(pdev);
3955 mlx4_pci_disable_device(dev);
3956 devlink_unregister(devlink);
3957 kfree(dev->persist);
3958 devlink_free(devlink);
3959 pci_set_drvdata(pdev, NULL);
3960}
3961
3962static int restore_current_port_types(struct mlx4_dev *dev,
3963 enum mlx4_port_type *types,
3964 enum mlx4_port_type *poss_types)
3965{
3966 struct mlx4_priv *priv = mlx4_priv(dev);
3967 int err, i;
3968
3969 mlx4_stop_sense(dev);
3970
3971 mutex_lock(&priv->port_mutex);
3972 for (i = 0; i < dev->caps.num_ports; i++)
3973 dev->caps.possible_type[i + 1] = poss_types[i];
3974 err = mlx4_change_port_types(dev, types);
3975 mlx4_start_sense(dev);
3976 mutex_unlock(&priv->port_mutex);
3977
3978 return err;
3979}
3980
3981int mlx4_restart_one(struct pci_dev *pdev)
3982{
3983 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
3984 struct mlx4_dev *dev = persist->dev;
3985 struct mlx4_priv *priv = mlx4_priv(dev);
3986 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
3987 int pci_dev_data, err, total_vfs;
3988
3989 pci_dev_data = priv->pci_dev_data;
3990 total_vfs = dev->persist->num_vfs;
3991 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
3992
3993 mlx4_unload_one(pdev);
3994 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 1);
3995 if (err) {
3996 mlx4_err(dev, "%s: ERROR: mlx4_load_one failed, pci_name=%s, err=%d\n",
3997 __func__, pci_name(pdev), err);
3998 return err;
3999 }
4000
4001 err = restore_current_port_types(dev, dev->persist->curr_port_type,
4002 dev->persist->curr_port_poss_type);
4003 if (err)
4004 mlx4_err(dev, "could not restore original port types (%d)\n",
4005 err);
4006
4007 return err;
4008}
4009
4010static const struct pci_device_id mlx4_pci_table[] = {
4011 /* MT25408 "Hermon" SDR */
4012 { PCI_VDEVICE(MELLANOX, 0x6340), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4013 /* MT25408 "Hermon" DDR */
4014 { PCI_VDEVICE(MELLANOX, 0x634a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4015 /* MT25408 "Hermon" QDR */
4016 { PCI_VDEVICE(MELLANOX, 0x6354), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4017 /* MT25408 "Hermon" DDR PCIe gen2 */
4018 { PCI_VDEVICE(MELLANOX, 0x6732), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4019 /* MT25408 "Hermon" QDR PCIe gen2 */
4020 { PCI_VDEVICE(MELLANOX, 0x673c), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4021 /* MT25408 "Hermon" EN 10GigE */
4022 { PCI_VDEVICE(MELLANOX, 0x6368), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4023 /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
4024 { PCI_VDEVICE(MELLANOX, 0x6750), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4025 /* MT25458 ConnectX EN 10GBASE-T 10GigE */
4026 { PCI_VDEVICE(MELLANOX, 0x6372), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4027 /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */
4028 { PCI_VDEVICE(MELLANOX, 0x675a), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4029 /* MT26468 ConnectX EN 10GigE PCIe gen2*/
4030 { PCI_VDEVICE(MELLANOX, 0x6764), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4031 /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */
4032 { PCI_VDEVICE(MELLANOX, 0x6746), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4033 /* MT26478 ConnectX2 40GigE PCIe gen2 */
4034 { PCI_VDEVICE(MELLANOX, 0x676e), MLX4_PCI_DEV_FORCE_SENSE_PORT },
4035 /* MT25400 Family [ConnectX-2 Virtual Function] */
4036 { PCI_VDEVICE(MELLANOX, 0x1002), MLX4_PCI_DEV_IS_VF },
4037 /* MT27500 Family [ConnectX-3] */
4038 { PCI_VDEVICE(MELLANOX, 0x1003), 0 },
4039 /* MT27500 Family [ConnectX-3 Virtual Function] */
4040 { PCI_VDEVICE(MELLANOX, 0x1004), MLX4_PCI_DEV_IS_VF },
4041 { PCI_VDEVICE(MELLANOX, 0x1005), 0 }, /* MT27510 Family */
4042 { PCI_VDEVICE(MELLANOX, 0x1006), 0 }, /* MT27511 Family */
4043 { PCI_VDEVICE(MELLANOX, 0x1007), 0 }, /* MT27520 Family */
4044 { PCI_VDEVICE(MELLANOX, 0x1008), 0 }, /* MT27521 Family */
4045 { PCI_VDEVICE(MELLANOX, 0x1009), 0 }, /* MT27530 Family */
4046 { PCI_VDEVICE(MELLANOX, 0x100a), 0 }, /* MT27531 Family */
4047 { PCI_VDEVICE(MELLANOX, 0x100b), 0 }, /* MT27540 Family */
4048 { PCI_VDEVICE(MELLANOX, 0x100c), 0 }, /* MT27541 Family */
4049 { PCI_VDEVICE(MELLANOX, 0x100d), 0 }, /* MT27550 Family */
4050 { PCI_VDEVICE(MELLANOX, 0x100e), 0 }, /* MT27551 Family */
4051 { PCI_VDEVICE(MELLANOX, 0x100f), 0 }, /* MT27560 Family */
4052 { PCI_VDEVICE(MELLANOX, 0x1010), 0 }, /* MT27561 Family */
4053 { 0, }
4054};
4055
4056MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
4057
4058static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev,
4059 pci_channel_state_t state)
4060{
4061 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4062
4063 mlx4_err(persist->dev, "mlx4_pci_err_detected was called\n");
4064 mlx4_enter_error_state(persist);
4065
4066 mutex_lock(&persist->interface_state_mutex);
4067 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
4068 mlx4_unload_one(pdev);
4069
4070 mutex_unlock(&persist->interface_state_mutex);
4071 if (state == pci_channel_io_perm_failure)
4072 return PCI_ERS_RESULT_DISCONNECT;
4073
4074 mlx4_pci_disable_device(persist->dev);
4075 return PCI_ERS_RESULT_NEED_RESET;
4076}
4077
4078static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev)
4079{
4080 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4081 struct mlx4_dev *dev = persist->dev;
4082 int err;
4083
4084 mlx4_err(dev, "mlx4_pci_slot_reset was called\n");
4085 err = mlx4_pci_enable_device(dev);
4086 if (err) {
4087 mlx4_err(dev, "Can not re-enable device, err=%d\n", err);
4088 return PCI_ERS_RESULT_DISCONNECT;
4089 }
4090
4091 pci_set_master(pdev);
4092 pci_restore_state(pdev);
4093 pci_save_state(pdev);
4094 return PCI_ERS_RESULT_RECOVERED;
4095}
4096
4097static void mlx4_pci_resume(struct pci_dev *pdev)
4098{
4099 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4100 struct mlx4_dev *dev = persist->dev;
4101 struct mlx4_priv *priv = mlx4_priv(dev);
4102 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0};
4103 int total_vfs;
4104 int err;
4105
4106 mlx4_err(dev, "%s was called\n", __func__);
4107 total_vfs = dev->persist->num_vfs;
4108 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs));
4109
4110 mutex_lock(&persist->interface_state_mutex);
4111 if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) {
4112 err = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, nvfs,
4113 priv, 1);
4114 if (err) {
4115 mlx4_err(dev, "%s: mlx4_load_one failed, err=%d\n",
4116 __func__, err);
4117 goto end;
4118 }
4119
4120 err = restore_current_port_types(dev, dev->persist->
4121 curr_port_type, dev->persist->
4122 curr_port_poss_type);
4123 if (err)
4124 mlx4_err(dev, "could not restore original port types (%d)\n", err);
4125 }
4126end:
4127 mutex_unlock(&persist->interface_state_mutex);
4128
4129}
4130
4131static void mlx4_shutdown(struct pci_dev *pdev)
4132{
4133 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev);
4134
4135 mlx4_info(persist->dev, "mlx4_shutdown was called\n");
4136 mutex_lock(&persist->interface_state_mutex);
4137 if (persist->interface_state & MLX4_INTERFACE_STATE_UP)
4138 mlx4_unload_one(pdev);
4139 mutex_unlock(&persist->interface_state_mutex);
4140}
4141
4142static const struct pci_error_handlers mlx4_err_handler = {
4143 .error_detected = mlx4_pci_err_detected,
4144 .slot_reset = mlx4_pci_slot_reset,
4145 .resume = mlx4_pci_resume,
4146};
4147
4148static struct pci_driver mlx4_driver = {
4149 .name = DRV_NAME,
4150 .id_table = mlx4_pci_table,
4151 .probe = mlx4_init_one,
4152 .shutdown = mlx4_shutdown,
4153 .remove = mlx4_remove_one,
4154 .err_handler = &mlx4_err_handler,
4155};
4156
4157static int __init mlx4_verify_params(void)
4158{
4159 if ((log_num_mac < 0) || (log_num_mac > 7)) {
4160 pr_warn("mlx4_core: bad num_mac: %d\n", log_num_mac);
4161 return -1;
4162 }
4163
4164 if (log_num_vlan != 0)
4165 pr_warn("mlx4_core: log_num_vlan - obsolete module param, using %d\n",
4166 MLX4_LOG_NUM_VLANS);
4167
4168 if (use_prio != 0)
4169 pr_warn("mlx4_core: use_prio - obsolete module param, ignored\n");
4170
4171 if ((log_mtts_per_seg < 1) || (log_mtts_per_seg > 7)) {
4172 pr_warn("mlx4_core: bad log_mtts_per_seg: %d\n",
4173 log_mtts_per_seg);
4174 return -1;
4175 }
4176
4177 /* Check if module param for ports type has legal combination */
4178 if (port_type_array[0] == false && port_type_array[1] == true) {
4179 pr_warn("Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n");
4180 port_type_array[0] = true;
4181 }
4182
4183 if (mlx4_log_num_mgm_entry_size < -7 ||
4184 (mlx4_log_num_mgm_entry_size > 0 &&
4185 (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE ||
4186 mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE))) {
4187 pr_warn("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not in legal range (-7..0 or %d..%d)\n",
4188 mlx4_log_num_mgm_entry_size,
4189 MLX4_MIN_MGM_LOG_ENTRY_SIZE,
4190 MLX4_MAX_MGM_LOG_ENTRY_SIZE);
4191 return -1;
4192 }
4193
4194 return 0;
4195}
4196
4197static int __init mlx4_init(void)
4198{
4199 int ret;
4200
4201 if (mlx4_verify_params())
4202 return -EINVAL;
4203
4204
4205 mlx4_wq = create_singlethread_workqueue("mlx4");
4206 if (!mlx4_wq)
4207 return -ENOMEM;
4208
4209 ret = pci_register_driver(&mlx4_driver);
4210 if (ret < 0)
4211 destroy_workqueue(mlx4_wq);
4212 return ret < 0 ? ret : 0;
4213}
4214
4215static void __exit mlx4_cleanup(void)
4216{
4217 pci_unregister_driver(&mlx4_driver);
4218 destroy_workqueue(mlx4_wq);
4219}
4220
4221module_init(mlx4_init);
4222module_exit(mlx4_cleanup);
Linux 6.x block layer and io_uring tree(s)