?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
sfc: suppress duplicate nvmem partition types in efx_ef10_mtd_probe
[linux-stable.git] / drivers / net / ethernet / sfc / ef10.c
blob2f2bda68d861492cc6f42cbe27ca9b0cf0f46b80
1 /****************************************************************************
2 * Driver for Solarflare network controllers and boards
3 * Copyright 2012-2013 Solarflare Communications Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation, incorporated herein by reference.
8 */
9
10 #include "net_driver.h"
11 #include "ef10_regs.h"
12 #include "io.h"
13 #include "mcdi.h"
14 #include "mcdi_pcol.h"
15 #include "nic.h"
16 #include "workarounds.h"
17 #include "selftest.h"
18 #include "ef10_sriov.h"
19 #include <linux/in.h>
20 #include <linux/jhash.h>
21 #include <linux/wait.h>
22 #include <linux/workqueue.h>
23
24 /* Hardware control for EF10 architecture including 'Huntington'. */
25
26 #define EFX_EF10_DRVGEN_EV 7
27 enum {
28 EFX_EF10_TEST = 1,
29 EFX_EF10_REFILL,
30 };
31 /* The maximum size of a shared RSS context */
32 /* TODO: this should really be from the mcdi protocol export */
33 #define EFX_EF10_MAX_SHARED_RSS_CONTEXT_SIZE 64UL
34
35 /* The filter table(s) are managed by firmware and we have write-only
36 * access. When removing filters we must identify them to the
37 * firmware by a 64-bit handle, but this is too wide for Linux kernel
38 * interfaces (32-bit for RX NFC, 16-bit for RFS). Also, we need to
39 * be able to tell in advance whether a requested insertion will
40 * replace an existing filter. Therefore we maintain a software hash
41 * table, which should be at least as large as the hardware hash
42 * table.
43 *
44 * Huntington has a single 8K filter table shared between all filter
45 * types and both ports.
46 */
47 #define HUNT_FILTER_TBL_ROWS 8192
48
49 #define EFX_EF10_FILTER_ID_INVALID 0xffff
50
51 #define EFX_EF10_FILTER_DEV_UC_MAX 32
52 #define EFX_EF10_FILTER_DEV_MC_MAX 256
53
54 /* VLAN list entry */
55 struct efx_ef10_vlan {
56 struct list_head list;
57 u16 vid;
58 };
59
60 enum efx_ef10_default_filters {
61 EFX_EF10_BCAST,
62 EFX_EF10_UCDEF,
63 EFX_EF10_MCDEF,
64 EFX_EF10_VXLAN4_UCDEF,
65 EFX_EF10_VXLAN4_MCDEF,
66 EFX_EF10_VXLAN6_UCDEF,
67 EFX_EF10_VXLAN6_MCDEF,
68 EFX_EF10_NVGRE4_UCDEF,
69 EFX_EF10_NVGRE4_MCDEF,
70 EFX_EF10_NVGRE6_UCDEF,
71 EFX_EF10_NVGRE6_MCDEF,
72 EFX_EF10_GENEVE4_UCDEF,
73 EFX_EF10_GENEVE4_MCDEF,
74 EFX_EF10_GENEVE6_UCDEF,
75 EFX_EF10_GENEVE6_MCDEF,
76
77 EFX_EF10_NUM_DEFAULT_FILTERS
78 };
79
80 /* Per-VLAN filters information */
81 struct efx_ef10_filter_vlan {
82 struct list_head list;
83 u16 vid;
84 u16 uc[EFX_EF10_FILTER_DEV_UC_MAX];
85 u16 mc[EFX_EF10_FILTER_DEV_MC_MAX];
86 u16 default_filters[EFX_EF10_NUM_DEFAULT_FILTERS];
87 };
88
89 struct efx_ef10_dev_addr {
90 u8 addr[ETH_ALEN];
91 };
92
93 struct efx_ef10_filter_table {
94 /* The MCDI match masks supported by this fw & hw, in order of priority */
95 u32 rx_match_mcdi_flags[
96 MC_CMD_GET_PARSER_DISP_INFO_OUT_SUPPORTED_MATCHES_MAXNUM * 2];
97 unsigned int rx_match_count;
98
99 struct rw_semaphore lock; /* Protects entries */
100 struct {
101 unsigned long spec; /* pointer to spec plus flag bits */
102 /* AUTO_OLD is used to mark and sweep MAC filters for the device address lists. */
103 /* unused flag 1UL */
104 #define EFX_EF10_FILTER_FLAG_AUTO_OLD 2UL
105 #define EFX_EF10_FILTER_FLAGS 3UL
106 u64 handle; /* firmware handle */
107 } *entry;
108 /* Shadow of net_device address lists, guarded by mac_lock */
109 struct efx_ef10_dev_addr dev_uc_list[EFX_EF10_FILTER_DEV_UC_MAX];
110 struct efx_ef10_dev_addr dev_mc_list[EFX_EF10_FILTER_DEV_MC_MAX];
111 int dev_uc_count;
112 int dev_mc_count;
113 bool uc_promisc;
114 bool mc_promisc;
115 /* Whether in multicast promiscuous mode when last changed */
116 bool mc_promisc_last;
117 bool mc_overflow; /* Too many MC addrs; should always imply mc_promisc */
118 bool vlan_filter;
119 struct list_head vlan_list;
120 };
121
122 /* An arbitrary search limit for the software hash table */
123 #define EFX_EF10_FILTER_SEARCH_LIMIT 200
124
125 static void efx_ef10_rx_free_indir_table(struct efx_nic *efx);
126 static void efx_ef10_filter_table_remove(struct efx_nic *efx);
127 static int efx_ef10_filter_add_vlan(struct efx_nic *efx, u16 vid);
128 static void efx_ef10_filter_del_vlan_internal(struct efx_nic *efx,
129 struct efx_ef10_filter_vlan *vlan);
130 static void efx_ef10_filter_del_vlan(struct efx_nic *efx, u16 vid);
131 static int efx_ef10_set_udp_tnl_ports(struct efx_nic *efx, bool unloading);
132
133 static u32 efx_ef10_filter_get_unsafe_id(u32 filter_id)
134 {
135 WARN_ON_ONCE(filter_id == EFX_EF10_FILTER_ID_INVALID);
136 return filter_id & (HUNT_FILTER_TBL_ROWS - 1);
137 }
138
139 static unsigned int efx_ef10_filter_get_unsafe_pri(u32 filter_id)
140 {
141 return filter_id / (HUNT_FILTER_TBL_ROWS * 2);
142 }
143
144 static u32 efx_ef10_make_filter_id(unsigned int pri, u16 idx)
145 {
146 return pri * HUNT_FILTER_TBL_ROWS * 2 + idx;
147 }
148
149 static int efx_ef10_get_warm_boot_count(struct efx_nic *efx)
150 {
151 efx_dword_t reg;
152
153 efx_readd(efx, &reg, ER_DZ_BIU_MC_SFT_STATUS);
154 return EFX_DWORD_FIELD(reg, EFX_WORD_1) == 0xb007 ?
155 EFX_DWORD_FIELD(reg, EFX_WORD_0) : -EIO;
156 }
157
158 /* On all EF10s up to and including SFC9220 (Medford1), all PFs use BAR 0 for
159 * I/O space and BAR 2(&3) for memory. On SFC9250 (Medford2), there is no I/O
160 * bar; PFs use BAR 0/1 for memory.
161 */
162 static unsigned int efx_ef10_pf_mem_bar(struct efx_nic *efx)
163 {
164 switch (efx->pci_dev->device) {
165 case 0x0b03: /* SFC9250 PF */
166 return 0;
167 default:
168 return 2;
169 }
170 }
171
172 /* All VFs use BAR 0/1 for memory */
173 static unsigned int efx_ef10_vf_mem_bar(struct efx_nic *efx)
174 {
175 return 0;
176 }
177
178 static unsigned int efx_ef10_mem_map_size(struct efx_nic *efx)
179 {
180 int bar;
181
182 bar = efx->type->mem_bar(efx);
183 return resource_size(&efx->pci_dev->resource[bar]);
184 }
185
186 static bool efx_ef10_is_vf(struct efx_nic *efx)
187 {
188 return efx->type->is_vf;
189 }
190
191 static int efx_ef10_get_pf_index(struct efx_nic *efx)
192 {
193 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_FUNCTION_INFO_OUT_LEN);
194 struct efx_ef10_nic_data *nic_data = efx->nic_data;
195 size_t outlen;
196 int rc;
197
198 rc = efx_mcdi_rpc(efx, MC_CMD_GET_FUNCTION_INFO, NULL, 0, outbuf,
199 sizeof(outbuf), &outlen);
200 if (rc)
201 return rc;
202 if (outlen < sizeof(outbuf))
203 return -EIO;
204
205 nic_data->pf_index = MCDI_DWORD(outbuf, GET_FUNCTION_INFO_OUT_PF);
206 return 0;
207 }
208
209 #ifdef CONFIG_SFC_SRIOV
210 static int efx_ef10_get_vf_index(struct efx_nic *efx)
211 {
212 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_FUNCTION_INFO_OUT_LEN);
213 struct efx_ef10_nic_data *nic_data = efx->nic_data;
214 size_t outlen;
215 int rc;
216
217 rc = efx_mcdi_rpc(efx, MC_CMD_GET_FUNCTION_INFO, NULL, 0, outbuf,
218 sizeof(outbuf), &outlen);
219 if (rc)
220 return rc;
221 if (outlen < sizeof(outbuf))
222 return -EIO;
223
224 nic_data->vf_index = MCDI_DWORD(outbuf, GET_FUNCTION_INFO_OUT_VF);
225 return 0;
226 }
227 #endif
228
229 static int efx_ef10_init_datapath_caps(struct efx_nic *efx)
230 {
231 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_CAPABILITIES_V4_OUT_LEN);
232 struct efx_ef10_nic_data *nic_data = efx->nic_data;
233 size_t outlen;
234 int rc;
235
236 BUILD_BUG_ON(MC_CMD_GET_CAPABILITIES_IN_LEN != 0);
237
238 rc = efx_mcdi_rpc(efx, MC_CMD_GET_CAPABILITIES, NULL, 0,
239 outbuf, sizeof(outbuf), &outlen);
240 if (rc)
241 return rc;
242 if (outlen < MC_CMD_GET_CAPABILITIES_OUT_LEN) {
243 netif_err(efx, drv, efx->net_dev,
244 "unable to read datapath firmware capabilities\n");
245 return -EIO;
246 }
247
248 nic_data->datapath_caps =
249 MCDI_DWORD(outbuf, GET_CAPABILITIES_OUT_FLAGS1);
250
251 if (outlen >= MC_CMD_GET_CAPABILITIES_V2_OUT_LEN) {
252 nic_data->datapath_caps2 = MCDI_DWORD(outbuf,
253 GET_CAPABILITIES_V2_OUT_FLAGS2);
254 nic_data->piobuf_size = MCDI_WORD(outbuf,
255 GET_CAPABILITIES_V2_OUT_SIZE_PIO_BUFF);
256 } else {
257 nic_data->datapath_caps2 = 0;
258 nic_data->piobuf_size = ER_DZ_TX_PIOBUF_SIZE;
259 }
260
261 /* record the DPCPU firmware IDs to determine VEB vswitching support.
262 */
263 nic_data->rx_dpcpu_fw_id =
264 MCDI_WORD(outbuf, GET_CAPABILITIES_OUT_RX_DPCPU_FW_ID);
265 nic_data->tx_dpcpu_fw_id =
266 MCDI_WORD(outbuf, GET_CAPABILITIES_OUT_TX_DPCPU_FW_ID);
267
268 if (!(nic_data->datapath_caps &
269 (1 << MC_CMD_GET_CAPABILITIES_OUT_RX_PREFIX_LEN_14_LBN))) {
270 netif_err(efx, probe, efx->net_dev,
271 "current firmware does not support an RX prefix\n");
272 return -ENODEV;
273 }
274
275 if (outlen >= MC_CMD_GET_CAPABILITIES_V3_OUT_LEN) {
276 u8 vi_window_mode = MCDI_BYTE(outbuf,
277 GET_CAPABILITIES_V3_OUT_VI_WINDOW_MODE);
278
279 switch (vi_window_mode) {
280 case MC_CMD_GET_CAPABILITIES_V3_OUT_VI_WINDOW_MODE_8K:
281 efx->vi_stride = 8192;
282 break;
283 case MC_CMD_GET_CAPABILITIES_V3_OUT_VI_WINDOW_MODE_16K:
284 efx->vi_stride = 16384;
285 break;
286 case MC_CMD_GET_CAPABILITIES_V3_OUT_VI_WINDOW_MODE_64K:
287 efx->vi_stride = 65536;
288 break;
289 default:
290 netif_err(efx, probe, efx->net_dev,
291 "Unrecognised VI window mode %d\n",
292 vi_window_mode);
293 return -EIO;
294 }
295 netif_dbg(efx, probe, efx->net_dev, "vi_stride = %u\n",
296 efx->vi_stride);
297 } else {
298 /* keep default VI stride */
299 netif_dbg(efx, probe, efx->net_dev,
300 "firmware did not report VI window mode, assuming vi_stride = %u\n",
301 efx->vi_stride);
302 }
303
304 if (outlen >= MC_CMD_GET_CAPABILITIES_V4_OUT_LEN) {
305 efx->num_mac_stats = MCDI_WORD(outbuf,
306 GET_CAPABILITIES_V4_OUT_MAC_STATS_NUM_STATS);
307 netif_dbg(efx, probe, efx->net_dev,
308 "firmware reports num_mac_stats = %u\n",
309 efx->num_mac_stats);
310 } else {
311 /* leave num_mac_stats as the default value, MC_CMD_MAC_NSTATS */
312 netif_dbg(efx, probe, efx->net_dev,
313 "firmware did not report num_mac_stats, assuming %u\n",
314 efx->num_mac_stats);
315 }
316
317 return 0;
318 }
319
320 static void efx_ef10_read_licensed_features(struct efx_nic *efx)
321 {
322 MCDI_DECLARE_BUF(inbuf, MC_CMD_LICENSING_V3_IN_LEN);
323 MCDI_DECLARE_BUF(outbuf, MC_CMD_LICENSING_V3_OUT_LEN);
324 struct efx_ef10_nic_data *nic_data = efx->nic_data;
325 size_t outlen;
326 int rc;
327
328 MCDI_SET_DWORD(inbuf, LICENSING_V3_IN_OP,
329 MC_CMD_LICENSING_V3_IN_OP_REPORT_LICENSE);
330 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_LICENSING_V3, inbuf, sizeof(inbuf),
331 outbuf, sizeof(outbuf), &outlen);
332 if (rc || (outlen < MC_CMD_LICENSING_V3_OUT_LEN))
333 return;
334
335 nic_data->licensed_features = MCDI_QWORD(outbuf,
336 LICENSING_V3_OUT_LICENSED_FEATURES);
337 }
338
339 static int efx_ef10_get_sysclk_freq(struct efx_nic *efx)
340 {
341 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_CLOCK_OUT_LEN);
342 int rc;
343
344 rc = efx_mcdi_rpc(efx, MC_CMD_GET_CLOCK, NULL, 0,
345 outbuf, sizeof(outbuf), NULL);
346 if (rc)
347 return rc;
348 rc = MCDI_DWORD(outbuf, GET_CLOCK_OUT_SYS_FREQ);
349 return rc > 0 ? rc : -ERANGE;
350 }
351
352 static int efx_ef10_get_timer_workarounds(struct efx_nic *efx)
353 {
354 struct efx_ef10_nic_data *nic_data = efx->nic_data;
355 unsigned int implemented;
356 unsigned int enabled;
357 int rc;
358
359 nic_data->workaround_35388 = false;
360 nic_data->workaround_61265 = false;
361
362 rc = efx_mcdi_get_workarounds(efx, &implemented, &enabled);
363
364 if (rc == -ENOSYS) {
365 /* Firmware without GET_WORKAROUNDS - not a problem. */
366 rc = 0;
367 } else if (rc == 0) {
368 /* Bug61265 workaround is always enabled if implemented. */
369 if (enabled & MC_CMD_GET_WORKAROUNDS_OUT_BUG61265)
370 nic_data->workaround_61265 = true;
371
372 if (enabled & MC_CMD_GET_WORKAROUNDS_OUT_BUG35388) {
373 nic_data->workaround_35388 = true;
374 } else if (implemented & MC_CMD_GET_WORKAROUNDS_OUT_BUG35388) {
375 /* Workaround is implemented but not enabled.
376 * Try to enable it.
377 */
378 rc = efx_mcdi_set_workaround(efx,
379 MC_CMD_WORKAROUND_BUG35388,
380 true, NULL);
381 if (rc == 0)
382 nic_data->workaround_35388 = true;
383 /* If we failed to set the workaround just carry on. */
384 rc = 0;
385 }
386 }
387
388 netif_dbg(efx, probe, efx->net_dev,
389 "workaround for bug 35388 is %sabled\n",
390 nic_data->workaround_35388 ? "en" : "dis");
391 netif_dbg(efx, probe, efx->net_dev,
392 "workaround for bug 61265 is %sabled\n",
393 nic_data->workaround_61265 ? "en" : "dis");
394
395 return rc;
396 }
397
398 static void efx_ef10_process_timer_config(struct efx_nic *efx,
399 const efx_dword_t *data)
400 {
401 unsigned int max_count;
402
403 if (EFX_EF10_WORKAROUND_61265(efx)) {
404 efx->timer_quantum_ns = MCDI_DWORD(data,
405 GET_EVQ_TMR_PROPERTIES_OUT_MCDI_TMR_STEP_NS);
406 efx->timer_max_ns = MCDI_DWORD(data,
407 GET_EVQ_TMR_PROPERTIES_OUT_MCDI_TMR_MAX_NS);
408 } else if (EFX_EF10_WORKAROUND_35388(efx)) {
409 efx->timer_quantum_ns = MCDI_DWORD(data,
410 GET_EVQ_TMR_PROPERTIES_OUT_BUG35388_TMR_NS_PER_COUNT);
411 max_count = MCDI_DWORD(data,
412 GET_EVQ_TMR_PROPERTIES_OUT_BUG35388_TMR_MAX_COUNT);
413 efx->timer_max_ns = max_count * efx->timer_quantum_ns;
414 } else {
415 efx->timer_quantum_ns = MCDI_DWORD(data,
416 GET_EVQ_TMR_PROPERTIES_OUT_TMR_REG_NS_PER_COUNT);
417 max_count = MCDI_DWORD(data,
418 GET_EVQ_TMR_PROPERTIES_OUT_TMR_REG_MAX_COUNT);
419 efx->timer_max_ns = max_count * efx->timer_quantum_ns;
420 }
421
422 netif_dbg(efx, probe, efx->net_dev,
423 "got timer properties from MC: quantum %u ns; max %u ns\n",
424 efx->timer_quantum_ns, efx->timer_max_ns);
425 }
426
427 static int efx_ef10_get_timer_config(struct efx_nic *efx)
428 {
429 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_EVQ_TMR_PROPERTIES_OUT_LEN);
430 int rc;
431
432 rc = efx_ef10_get_timer_workarounds(efx);
433 if (rc)
434 return rc;
435
436 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_EVQ_TMR_PROPERTIES, NULL, 0,
437 outbuf, sizeof(outbuf), NULL);
438
439 if (rc == 0) {
440 efx_ef10_process_timer_config(efx, outbuf);
441 } else if (rc == -ENOSYS || rc == -EPERM) {
442 /* Not available - fall back to Huntington defaults. */
443 unsigned int quantum;
444
445 rc = efx_ef10_get_sysclk_freq(efx);
446 if (rc < 0)
447 return rc;
448
449 quantum = 1536000 / rc; /* 1536 cycles */
450 efx->timer_quantum_ns = quantum;
451 efx->timer_max_ns = efx->type->timer_period_max * quantum;
452 rc = 0;
453 } else {
454 efx_mcdi_display_error(efx, MC_CMD_GET_EVQ_TMR_PROPERTIES,
455 MC_CMD_GET_EVQ_TMR_PROPERTIES_OUT_LEN,
456 NULL, 0, rc);
457 }
458
459 return rc;
460 }
461
462 static int efx_ef10_get_mac_address_pf(struct efx_nic *efx, u8 *mac_address)
463 {
464 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_MAC_ADDRESSES_OUT_LEN);
465 size_t outlen;
466 int rc;
467
468 BUILD_BUG_ON(MC_CMD_GET_MAC_ADDRESSES_IN_LEN != 0);
469
470 rc = efx_mcdi_rpc(efx, MC_CMD_GET_MAC_ADDRESSES, NULL, 0,
471 outbuf, sizeof(outbuf), &outlen);
472 if (rc)
473 return rc;
474 if (outlen < MC_CMD_GET_MAC_ADDRESSES_OUT_LEN)
475 return -EIO;
476
477 ether_addr_copy(mac_address,
478 MCDI_PTR(outbuf, GET_MAC_ADDRESSES_OUT_MAC_ADDR_BASE));
479 return 0;
480 }
481
482 static int efx_ef10_get_mac_address_vf(struct efx_nic *efx, u8 *mac_address)
483 {
484 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_GET_MAC_ADDRESSES_IN_LEN);
485 MCDI_DECLARE_BUF(outbuf, MC_CMD_VPORT_GET_MAC_ADDRESSES_OUT_LENMAX);
486 size_t outlen;
487 int num_addrs, rc;
488
489 MCDI_SET_DWORD(inbuf, VPORT_GET_MAC_ADDRESSES_IN_VPORT_ID,
490 EVB_PORT_ID_ASSIGNED);
491 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_GET_MAC_ADDRESSES, inbuf,
492 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
493
494 if (rc)
495 return rc;
496 if (outlen < MC_CMD_VPORT_GET_MAC_ADDRESSES_OUT_LENMIN)
497 return -EIO;
498
499 num_addrs = MCDI_DWORD(outbuf,
500 VPORT_GET_MAC_ADDRESSES_OUT_MACADDR_COUNT);
501
502 WARN_ON(num_addrs != 1);
503
504 ether_addr_copy(mac_address,
505 MCDI_PTR(outbuf, VPORT_GET_MAC_ADDRESSES_OUT_MACADDR));
506
507 return 0;
508 }
509
510 static ssize_t efx_ef10_show_link_control_flag(struct device *dev,
511 struct device_attribute *attr,
512 char *buf)
513 {
514 struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
515
516 return sprintf(buf, "%d\n",
517 ((efx->mcdi->fn_flags) &
518 (1 << MC_CMD_DRV_ATTACH_EXT_OUT_FLAG_LINKCTRL))
519 ? 1 : 0);
520 }
521
522 static ssize_t efx_ef10_show_primary_flag(struct device *dev,
523 struct device_attribute *attr,
524 char *buf)
525 {
526 struct efx_nic *efx = pci_get_drvdata(to_pci_dev(dev));
527
528 return sprintf(buf, "%d\n",
529 ((efx->mcdi->fn_flags) &
530 (1 << MC_CMD_DRV_ATTACH_EXT_OUT_FLAG_PRIMARY))
531 ? 1 : 0);
532 }
533
534 static struct efx_ef10_vlan *efx_ef10_find_vlan(struct efx_nic *efx, u16 vid)
535 {
536 struct efx_ef10_nic_data *nic_data = efx->nic_data;
537 struct efx_ef10_vlan *vlan;
538
539 WARN_ON(!mutex_is_locked(&nic_data->vlan_lock));
540
541 list_for_each_entry(vlan, &nic_data->vlan_list, list) {
542 if (vlan->vid == vid)
543 return vlan;
544 }
545
546 return NULL;
547 }
548
549 static int efx_ef10_add_vlan(struct efx_nic *efx, u16 vid)
550 {
551 struct efx_ef10_nic_data *nic_data = efx->nic_data;
552 struct efx_ef10_vlan *vlan;
553 int rc;
554
555 mutex_lock(&nic_data->vlan_lock);
556
557 vlan = efx_ef10_find_vlan(efx, vid);
558 if (vlan) {
559 /* We add VID 0 on init. 8021q adds it on module init
560 * for all interfaces with VLAN filtring feature.
561 */
562 if (vid == 0)
563 goto done_unlock;
564 netif_warn(efx, drv, efx->net_dev,
565 "VLAN %u already added\n", vid);
566 rc = -EALREADY;
567 goto fail_exist;
568 }
569
570 rc = -ENOMEM;
571 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
572 if (!vlan)
573 goto fail_alloc;
574
575 vlan->vid = vid;
576
577 list_add_tail(&vlan->list, &nic_data->vlan_list);
578
579 if (efx->filter_state) {
580 mutex_lock(&efx->mac_lock);
581 down_write(&efx->filter_sem);
582 rc = efx_ef10_filter_add_vlan(efx, vlan->vid);
583 up_write(&efx->filter_sem);
584 mutex_unlock(&efx->mac_lock);
585 if (rc)
586 goto fail_filter_add_vlan;
587 }
588
589 done_unlock:
590 mutex_unlock(&nic_data->vlan_lock);
591 return 0;
592
593 fail_filter_add_vlan:
594 list_del(&vlan->list);
595 kfree(vlan);
596 fail_alloc:
597 fail_exist:
598 mutex_unlock(&nic_data->vlan_lock);
599 return rc;
600 }
601
602 static void efx_ef10_del_vlan_internal(struct efx_nic *efx,
603 struct efx_ef10_vlan *vlan)
604 {
605 struct efx_ef10_nic_data *nic_data = efx->nic_data;
606
607 WARN_ON(!mutex_is_locked(&nic_data->vlan_lock));
608
609 if (efx->filter_state) {
610 down_write(&efx->filter_sem);
611 efx_ef10_filter_del_vlan(efx, vlan->vid);
612 up_write(&efx->filter_sem);
613 }
614
615 list_del(&vlan->list);
616 kfree(vlan);
617 }
618
619 static int efx_ef10_del_vlan(struct efx_nic *efx, u16 vid)
620 {
621 struct efx_ef10_nic_data *nic_data = efx->nic_data;
622 struct efx_ef10_vlan *vlan;
623 int rc = 0;
624
625 /* 8021q removes VID 0 on module unload for all interfaces
626 * with VLAN filtering feature. We need to keep it to receive
627 * untagged traffic.
628 */
629 if (vid == 0)
630 return 0;
631
632 mutex_lock(&nic_data->vlan_lock);
633
634 vlan = efx_ef10_find_vlan(efx, vid);
635 if (!vlan) {
636 netif_err(efx, drv, efx->net_dev,
637 "VLAN %u to be deleted not found\n", vid);
638 rc = -ENOENT;
639 } else {
640 efx_ef10_del_vlan_internal(efx, vlan);
641 }
642
643 mutex_unlock(&nic_data->vlan_lock);
644
645 return rc;
646 }
647
648 static void efx_ef10_cleanup_vlans(struct efx_nic *efx)
649 {
650 struct efx_ef10_nic_data *nic_data = efx->nic_data;
651 struct efx_ef10_vlan *vlan, *next_vlan;
652
653 mutex_lock(&nic_data->vlan_lock);
654 list_for_each_entry_safe(vlan, next_vlan, &nic_data->vlan_list, list)
655 efx_ef10_del_vlan_internal(efx, vlan);
656 mutex_unlock(&nic_data->vlan_lock);
657 }
658
659 static DEVICE_ATTR(link_control_flag, 0444, efx_ef10_show_link_control_flag,
660 NULL);
661 static DEVICE_ATTR(primary_flag, 0444, efx_ef10_show_primary_flag, NULL);
662
663 static int efx_ef10_probe(struct efx_nic *efx)
664 {
665 struct efx_ef10_nic_data *nic_data;
666 int i, rc;
667
668 nic_data = kzalloc(sizeof(*nic_data), GFP_KERNEL);
669 if (!nic_data)
670 return -ENOMEM;
671 efx->nic_data = nic_data;
672
673 /* we assume later that we can copy from this buffer in dwords */
674 BUILD_BUG_ON(MCDI_CTL_SDU_LEN_MAX_V2 % 4);
675
676 rc = efx_nic_alloc_buffer(efx, &nic_data->mcdi_buf,
677 8 + MCDI_CTL_SDU_LEN_MAX_V2, GFP_KERNEL);
678 if (rc)
679 goto fail1;
680
681 /* Get the MC's warm boot count. In case it's rebooting right
682 * now, be prepared to retry.
683 */
684 i = 0;
685 for (;;) {
686 rc = efx_ef10_get_warm_boot_count(efx);
687 if (rc >= 0)
688 break;
689 if (++i == 5)
690 goto fail2;
691 ssleep(1);
692 }
693 nic_data->warm_boot_count = rc;
694
695 efx->rss_context.context_id = EFX_EF10_RSS_CONTEXT_INVALID;
696
697 nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
698
699 /* In case we're recovering from a crash (kexec), we want to
700 * cancel any outstanding request by the previous user of this
701 * function. We send a special message using the least
702 * significant bits of the 'high' (doorbell) register.
703 */
704 _efx_writed(efx, cpu_to_le32(1), ER_DZ_MC_DB_HWRD);
705
706 rc = efx_mcdi_init(efx);
707 if (rc)
708 goto fail2;
709
710 mutex_init(&nic_data->udp_tunnels_lock);
711
712 /* Reset (most) configuration for this function */
713 rc = efx_mcdi_reset(efx, RESET_TYPE_ALL);
714 if (rc)
715 goto fail3;
716
717 /* Enable event logging */
718 rc = efx_mcdi_log_ctrl(efx, true, false, 0);
719 if (rc)
720 goto fail3;
721
722 rc = device_create_file(&efx->pci_dev->dev,
723 &dev_attr_link_control_flag);
724 if (rc)
725 goto fail3;
726
727 rc = device_create_file(&efx->pci_dev->dev, &dev_attr_primary_flag);
728 if (rc)
729 goto fail4;
730
731 rc = efx_ef10_get_pf_index(efx);
732 if (rc)
733 goto fail5;
734
735 rc = efx_ef10_init_datapath_caps(efx);
736 if (rc < 0)
737 goto fail5;
738
739 efx_ef10_read_licensed_features(efx);
740
741 /* We can have one VI for each vi_stride-byte region.
742 * However, until we use TX option descriptors we need two TX queues
743 * per channel.
744 */
745 efx->max_channels = min_t(unsigned int,
746 EFX_MAX_CHANNELS,
747 efx_ef10_mem_map_size(efx) /
748 (efx->vi_stride * EFX_TXQ_TYPES));
749 efx->max_tx_channels = efx->max_channels;
750 if (WARN_ON(efx->max_channels == 0)) {
751 rc = -EIO;
752 goto fail5;
753 }
754
755 efx->rx_packet_len_offset =
756 ES_DZ_RX_PREFIX_PKTLEN_OFST - ES_DZ_RX_PREFIX_SIZE;
757
758 if (nic_data->datapath_caps &
759 (1 << MC_CMD_GET_CAPABILITIES_OUT_RX_INCLUDE_FCS_LBN))
760 efx->net_dev->hw_features |= NETIF_F_RXFCS;
761
762 rc = efx_mcdi_port_get_number(efx);
763 if (rc < 0)
764 goto fail5;
765 efx->port_num = rc;
766
767 rc = efx->type->get_mac_address(efx, efx->net_dev->perm_addr);
768 if (rc)
769 goto fail5;
770
771 rc = efx_ef10_get_timer_config(efx);
772 if (rc < 0)
773 goto fail5;
774
775 rc = efx_mcdi_mon_probe(efx);
776 if (rc && rc != -EPERM)
777 goto fail5;
778
779 efx_ptp_defer_probe_with_channel(efx);
780
781 #ifdef CONFIG_SFC_SRIOV
782 if ((efx->pci_dev->physfn) && (!efx->pci_dev->is_physfn)) {
783 struct pci_dev *pci_dev_pf = efx->pci_dev->physfn;
784 struct efx_nic *efx_pf = pci_get_drvdata(pci_dev_pf);
785
786 efx_pf->type->get_mac_address(efx_pf, nic_data->port_id);
787 } else
788 #endif
789 ether_addr_copy(nic_data->port_id, efx->net_dev->perm_addr);
790
791 INIT_LIST_HEAD(&nic_data->vlan_list);
792 mutex_init(&nic_data->vlan_lock);
793
794 /* Add unspecified VID to support VLAN filtering being disabled */
795 rc = efx_ef10_add_vlan(efx, EFX_FILTER_VID_UNSPEC);
796 if (rc)
797 goto fail_add_vid_unspec;
798
799 /* If VLAN filtering is enabled, we need VID 0 to get untagged
800 * traffic. It is added automatically if 8021q module is loaded,
801 * but we can't rely on it since module may be not loaded.
802 */
803 rc = efx_ef10_add_vlan(efx, 0);
804 if (rc)
805 goto fail_add_vid_0;
806
807 return 0;
808
809 fail_add_vid_0:
810 efx_ef10_cleanup_vlans(efx);
811 fail_add_vid_unspec:
812 mutex_destroy(&nic_data->vlan_lock);
813 efx_ptp_remove(efx);
814 efx_mcdi_mon_remove(efx);
815 fail5:
816 device_remove_file(&efx->pci_dev->dev, &dev_attr_primary_flag);
817 fail4:
818 device_remove_file(&efx->pci_dev->dev, &dev_attr_link_control_flag);
819 fail3:
820 efx_mcdi_detach(efx);
821
822 mutex_lock(&nic_data->udp_tunnels_lock);
823 memset(nic_data->udp_tunnels, 0, sizeof(nic_data->udp_tunnels));
824 (void)efx_ef10_set_udp_tnl_ports(efx, true);
825 mutex_unlock(&nic_data->udp_tunnels_lock);
826 mutex_destroy(&nic_data->udp_tunnels_lock);
827
828 efx_mcdi_fini(efx);
829 fail2:
830 efx_nic_free_buffer(efx, &nic_data->mcdi_buf);
831 fail1:
832 kfree(nic_data);
833 efx->nic_data = NULL;
834 return rc;
835 }
836
837 static int efx_ef10_free_vis(struct efx_nic *efx)
838 {
839 MCDI_DECLARE_BUF_ERR(outbuf);
840 size_t outlen;
841 int rc = efx_mcdi_rpc_quiet(efx, MC_CMD_FREE_VIS, NULL, 0,
842 outbuf, sizeof(outbuf), &outlen);
843
844 /* -EALREADY means nothing to free, so ignore */
845 if (rc == -EALREADY)
846 rc = 0;
847 if (rc)
848 efx_mcdi_display_error(efx, MC_CMD_FREE_VIS, 0, outbuf, outlen,
849 rc);
850 return rc;
851 }
852
853 #ifdef EFX_USE_PIO
854
855 static void efx_ef10_free_piobufs(struct efx_nic *efx)
856 {
857 struct efx_ef10_nic_data *nic_data = efx->nic_data;
858 MCDI_DECLARE_BUF(inbuf, MC_CMD_FREE_PIOBUF_IN_LEN);
859 unsigned int i;
860 int rc;
861
862 BUILD_BUG_ON(MC_CMD_FREE_PIOBUF_OUT_LEN != 0);
863
864 for (i = 0; i < nic_data->n_piobufs; i++) {
865 MCDI_SET_DWORD(inbuf, FREE_PIOBUF_IN_PIOBUF_HANDLE,
866 nic_data->piobuf_handle[i]);
867 rc = efx_mcdi_rpc(efx, MC_CMD_FREE_PIOBUF, inbuf, sizeof(inbuf),
868 NULL, 0, NULL);
869 WARN_ON(rc);
870 }
871
872 nic_data->n_piobufs = 0;
873 }
874
875 static int efx_ef10_alloc_piobufs(struct efx_nic *efx, unsigned int n)
876 {
877 struct efx_ef10_nic_data *nic_data = efx->nic_data;
878 MCDI_DECLARE_BUF(outbuf, MC_CMD_ALLOC_PIOBUF_OUT_LEN);
879 unsigned int i;
880 size_t outlen;
881 int rc = 0;
882
883 BUILD_BUG_ON(MC_CMD_ALLOC_PIOBUF_IN_LEN != 0);
884
885 for (i = 0; i < n; i++) {
886 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_ALLOC_PIOBUF, NULL, 0,
887 outbuf, sizeof(outbuf), &outlen);
888 if (rc) {
889 /* Don't display the MC error if we didn't have space
890 * for a VF.
891 */
892 if (!(efx_ef10_is_vf(efx) && rc == -ENOSPC))
893 efx_mcdi_display_error(efx, MC_CMD_ALLOC_PIOBUF,
894 0, outbuf, outlen, rc);
895 break;
896 }
897 if (outlen < MC_CMD_ALLOC_PIOBUF_OUT_LEN) {
898 rc = -EIO;
899 break;
900 }
901 nic_data->piobuf_handle[i] =
902 MCDI_DWORD(outbuf, ALLOC_PIOBUF_OUT_PIOBUF_HANDLE);
903 netif_dbg(efx, probe, efx->net_dev,
904 "allocated PIO buffer %u handle %x\n", i,
905 nic_data->piobuf_handle[i]);
906 }
907
908 nic_data->n_piobufs = i;
909 if (rc)
910 efx_ef10_free_piobufs(efx);
911 return rc;
912 }
913
914 static int efx_ef10_link_piobufs(struct efx_nic *efx)
915 {
916 struct efx_ef10_nic_data *nic_data = efx->nic_data;
917 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_PIOBUF_IN_LEN);
918 struct efx_channel *channel;
919 struct efx_tx_queue *tx_queue;
920 unsigned int offset, index;
921 int rc;
922
923 BUILD_BUG_ON(MC_CMD_LINK_PIOBUF_OUT_LEN != 0);
924 BUILD_BUG_ON(MC_CMD_UNLINK_PIOBUF_OUT_LEN != 0);
925
926 /* Link a buffer to each VI in the write-combining mapping */
927 for (index = 0; index < nic_data->n_piobufs; ++index) {
928 MCDI_SET_DWORD(inbuf, LINK_PIOBUF_IN_PIOBUF_HANDLE,
929 nic_data->piobuf_handle[index]);
930 MCDI_SET_DWORD(inbuf, LINK_PIOBUF_IN_TXQ_INSTANCE,
931 nic_data->pio_write_vi_base + index);
932 rc = efx_mcdi_rpc(efx, MC_CMD_LINK_PIOBUF,
933 inbuf, MC_CMD_LINK_PIOBUF_IN_LEN,
934 NULL, 0, NULL);
935 if (rc) {
936 netif_err(efx, drv, efx->net_dev,
937 "failed to link VI %u to PIO buffer %u (%d)\n",
938 nic_data->pio_write_vi_base + index, index,
939 rc);
940 goto fail;
941 }
942 netif_dbg(efx, probe, efx->net_dev,
943 "linked VI %u to PIO buffer %u\n",
944 nic_data->pio_write_vi_base + index, index);
945 }
946
947 /* Link a buffer to each TX queue */
948 efx_for_each_channel(channel, efx) {
949 /* Extra channels, even those with TXQs (PTP), do not require
950 * PIO resources.
951 */
952 if (!channel->type->want_pio)
953 continue;
954 efx_for_each_channel_tx_queue(tx_queue, channel) {
955 /* We assign the PIO buffers to queues in
956 * reverse order to allow for the following
957 * special case.
958 */
959 offset = ((efx->tx_channel_offset + efx->n_tx_channels -
960 tx_queue->channel->channel - 1) *
961 efx_piobuf_size);
962 index = offset / nic_data->piobuf_size;
963 offset = offset % nic_data->piobuf_size;
964
965 /* When the host page size is 4K, the first
966 * host page in the WC mapping may be within
967 * the same VI page as the last TX queue. We
968 * can only link one buffer to each VI.
969 */
970 if (tx_queue->queue == nic_data->pio_write_vi_base) {
971 BUG_ON(index != 0);
972 rc = 0;
973 } else {
974 MCDI_SET_DWORD(inbuf,
975 LINK_PIOBUF_IN_PIOBUF_HANDLE,
976 nic_data->piobuf_handle[index]);
977 MCDI_SET_DWORD(inbuf,
978 LINK_PIOBUF_IN_TXQ_INSTANCE,
979 tx_queue->queue);
980 rc = efx_mcdi_rpc(efx, MC_CMD_LINK_PIOBUF,
981 inbuf, MC_CMD_LINK_PIOBUF_IN_LEN,
982 NULL, 0, NULL);
983 }
984
985 if (rc) {
986 /* This is non-fatal; the TX path just
987 * won't use PIO for this queue
988 */
989 netif_err(efx, drv, efx->net_dev,
990 "failed to link VI %u to PIO buffer %u (%d)\n",
991 tx_queue->queue, index, rc);
992 tx_queue->piobuf = NULL;
993 } else {
994 tx_queue->piobuf =
995 nic_data->pio_write_base +
996 index * efx->vi_stride + offset;
997 tx_queue->piobuf_offset = offset;
998 netif_dbg(efx, probe, efx->net_dev,
999 "linked VI %u to PIO buffer %u offset %x addr %p\n",
1000 tx_queue->queue, index,
1001 tx_queue->piobuf_offset,
1002 tx_queue->piobuf);
1003 }
1004 }
1005 }
1006
1007 return 0;
1008
1009 fail:
1010 /* inbuf was defined for MC_CMD_LINK_PIOBUF. We can use the same
1011 * buffer for MC_CMD_UNLINK_PIOBUF because it's shorter.
1012 */
1013 BUILD_BUG_ON(MC_CMD_LINK_PIOBUF_IN_LEN < MC_CMD_UNLINK_PIOBUF_IN_LEN);
1014 while (index--) {
1015 MCDI_SET_DWORD(inbuf, UNLINK_PIOBUF_IN_TXQ_INSTANCE,
1016 nic_data->pio_write_vi_base + index);
1017 efx_mcdi_rpc(efx, MC_CMD_UNLINK_PIOBUF,
1018 inbuf, MC_CMD_UNLINK_PIOBUF_IN_LEN,
1019 NULL, 0, NULL);
1020 }
1021 return rc;
1022 }
1023
1024 static void efx_ef10_forget_old_piobufs(struct efx_nic *efx)
1025 {
1026 struct efx_channel *channel;
1027 struct efx_tx_queue *tx_queue;
1028
1029 /* All our existing PIO buffers went away */
1030 efx_for_each_channel(channel, efx)
1031 efx_for_each_channel_tx_queue(tx_queue, channel)
1032 tx_queue->piobuf = NULL;
1033 }
1034
1035 #else /* !EFX_USE_PIO */
1036
1037 static int efx_ef10_alloc_piobufs(struct efx_nic *efx, unsigned int n)
1038 {
1039 return n == 0 ? 0 : -ENOBUFS;
1040 }
1041
1042 static int efx_ef10_link_piobufs(struct efx_nic *efx)
1043 {
1044 return 0;
1045 }
1046
1047 static void efx_ef10_free_piobufs(struct efx_nic *efx)
1048 {
1049 }
1050
1051 static void efx_ef10_forget_old_piobufs(struct efx_nic *efx)
1052 {
1053 }
1054
1055 #endif /* EFX_USE_PIO */
1056
1057 static void efx_ef10_remove(struct efx_nic *efx)
1058 {
1059 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1060 int rc;
1061
1062 #ifdef CONFIG_SFC_SRIOV
1063 struct efx_ef10_nic_data *nic_data_pf;
1064 struct pci_dev *pci_dev_pf;
1065 struct efx_nic *efx_pf;
1066 struct ef10_vf *vf;
1067
1068 if (efx->pci_dev->is_virtfn) {
1069 pci_dev_pf = efx->pci_dev->physfn;
1070 if (pci_dev_pf) {
1071 efx_pf = pci_get_drvdata(pci_dev_pf);
1072 nic_data_pf = efx_pf->nic_data;
1073 vf = nic_data_pf->vf + nic_data->vf_index;
1074 vf->efx = NULL;
1075 } else
1076 netif_info(efx, drv, efx->net_dev,
1077 "Could not get the PF id from VF\n");
1078 }
1079 #endif
1080
1081 efx_ef10_cleanup_vlans(efx);
1082 mutex_destroy(&nic_data->vlan_lock);
1083
1084 efx_ptp_remove(efx);
1085
1086 efx_mcdi_mon_remove(efx);
1087
1088 efx_ef10_rx_free_indir_table(efx);
1089
1090 if (nic_data->wc_membase)
1091 iounmap(nic_data->wc_membase);
1092
1093 rc = efx_ef10_free_vis(efx);
1094 WARN_ON(rc != 0);
1095
1096 if (!nic_data->must_restore_piobufs)
1097 efx_ef10_free_piobufs(efx);
1098
1099 device_remove_file(&efx->pci_dev->dev, &dev_attr_primary_flag);
1100 device_remove_file(&efx->pci_dev->dev, &dev_attr_link_control_flag);
1101
1102 efx_mcdi_detach(efx);
1103
1104 memset(nic_data->udp_tunnels, 0, sizeof(nic_data->udp_tunnels));
1105 mutex_lock(&nic_data->udp_tunnels_lock);
1106 (void)efx_ef10_set_udp_tnl_ports(efx, true);
1107 mutex_unlock(&nic_data->udp_tunnels_lock);
1108
1109 mutex_destroy(&nic_data->udp_tunnels_lock);
1110
1111 efx_mcdi_fini(efx);
1112 efx_nic_free_buffer(efx, &nic_data->mcdi_buf);
1113 kfree(nic_data);
1114 }
1115
1116 static int efx_ef10_probe_pf(struct efx_nic *efx)
1117 {
1118 return efx_ef10_probe(efx);
1119 }
1120
1121 int efx_ef10_vadaptor_query(struct efx_nic *efx, unsigned int port_id,
1122 u32 *port_flags, u32 *vadaptor_flags,
1123 unsigned int *vlan_tags)
1124 {
1125 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1126 MCDI_DECLARE_BUF(inbuf, MC_CMD_VADAPTOR_QUERY_IN_LEN);
1127 MCDI_DECLARE_BUF(outbuf, MC_CMD_VADAPTOR_QUERY_OUT_LEN);
1128 size_t outlen;
1129 int rc;
1130
1131 if (nic_data->datapath_caps &
1132 (1 << MC_CMD_GET_CAPABILITIES_OUT_VADAPTOR_QUERY_LBN)) {
1133 MCDI_SET_DWORD(inbuf, VADAPTOR_QUERY_IN_UPSTREAM_PORT_ID,
1134 port_id);
1135
1136 rc = efx_mcdi_rpc(efx, MC_CMD_VADAPTOR_QUERY, inbuf, sizeof(inbuf),
1137 outbuf, sizeof(outbuf), &outlen);
1138 if (rc)
1139 return rc;
1140
1141 if (outlen < sizeof(outbuf)) {
1142 rc = -EIO;
1143 return rc;
1144 }
1145 }
1146
1147 if (port_flags)
1148 *port_flags = MCDI_DWORD(outbuf, VADAPTOR_QUERY_OUT_PORT_FLAGS);
1149 if (vadaptor_flags)
1150 *vadaptor_flags =
1151 MCDI_DWORD(outbuf, VADAPTOR_QUERY_OUT_VADAPTOR_FLAGS);
1152 if (vlan_tags)
1153 *vlan_tags =
1154 MCDI_DWORD(outbuf,
1155 VADAPTOR_QUERY_OUT_NUM_AVAILABLE_VLAN_TAGS);
1156
1157 return 0;
1158 }
1159
1160 int efx_ef10_vadaptor_alloc(struct efx_nic *efx, unsigned int port_id)
1161 {
1162 MCDI_DECLARE_BUF(inbuf, MC_CMD_VADAPTOR_ALLOC_IN_LEN);
1163
1164 MCDI_SET_DWORD(inbuf, VADAPTOR_ALLOC_IN_UPSTREAM_PORT_ID, port_id);
1165 return efx_mcdi_rpc(efx, MC_CMD_VADAPTOR_ALLOC, inbuf, sizeof(inbuf),
1166 NULL, 0, NULL);
1167 }
1168
1169 int efx_ef10_vadaptor_free(struct efx_nic *efx, unsigned int port_id)
1170 {
1171 MCDI_DECLARE_BUF(inbuf, MC_CMD_VADAPTOR_FREE_IN_LEN);
1172
1173 MCDI_SET_DWORD(inbuf, VADAPTOR_FREE_IN_UPSTREAM_PORT_ID, port_id);
1174 return efx_mcdi_rpc(efx, MC_CMD_VADAPTOR_FREE, inbuf, sizeof(inbuf),
1175 NULL, 0, NULL);
1176 }
1177
1178 int efx_ef10_vport_add_mac(struct efx_nic *efx,
1179 unsigned int port_id, u8 *mac)
1180 {
1181 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_ADD_MAC_ADDRESS_IN_LEN);
1182
1183 MCDI_SET_DWORD(inbuf, VPORT_ADD_MAC_ADDRESS_IN_VPORT_ID, port_id);
1184 ether_addr_copy(MCDI_PTR(inbuf, VPORT_ADD_MAC_ADDRESS_IN_MACADDR), mac);
1185
1186 return efx_mcdi_rpc(efx, MC_CMD_VPORT_ADD_MAC_ADDRESS, inbuf,
1187 sizeof(inbuf), NULL, 0, NULL);
1188 }
1189
1190 int efx_ef10_vport_del_mac(struct efx_nic *efx,
1191 unsigned int port_id, u8 *mac)
1192 {
1193 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN);
1194
1195 MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id);
1196 ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac);
1197
1198 return efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf,
1199 sizeof(inbuf), NULL, 0, NULL);
1200 }
1201
1202 #ifdef CONFIG_SFC_SRIOV
1203 static int efx_ef10_probe_vf(struct efx_nic *efx)
1204 {
1205 int rc;
1206 struct pci_dev *pci_dev_pf;
1207
1208 /* If the parent PF has no VF data structure, it doesn't know about this
1209 * VF so fail probe. The VF needs to be re-created. This can happen
1210 * if the PF driver is unloaded while the VF is assigned to a guest.
1211 */
1212 pci_dev_pf = efx->pci_dev->physfn;
1213 if (pci_dev_pf) {
1214 struct efx_nic *efx_pf = pci_get_drvdata(pci_dev_pf);
1215 struct efx_ef10_nic_data *nic_data_pf = efx_pf->nic_data;
1216
1217 if (!nic_data_pf->vf) {
1218 netif_info(efx, drv, efx->net_dev,
1219 "The VF cannot link to its parent PF; "
1220 "please destroy and re-create the VF\n");
1221 return -EBUSY;
1222 }
1223 }
1224
1225 rc = efx_ef10_probe(efx);
1226 if (rc)
1227 return rc;
1228
1229 rc = efx_ef10_get_vf_index(efx);
1230 if (rc)
1231 goto fail;
1232
1233 if (efx->pci_dev->is_virtfn) {
1234 if (efx->pci_dev->physfn) {
1235 struct efx_nic *efx_pf =
1236 pci_get_drvdata(efx->pci_dev->physfn);
1237 struct efx_ef10_nic_data *nic_data_p = efx_pf->nic_data;
1238 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1239
1240 nic_data_p->vf[nic_data->vf_index].efx = efx;
1241 nic_data_p->vf[nic_data->vf_index].pci_dev =
1242 efx->pci_dev;
1243 } else
1244 netif_info(efx, drv, efx->net_dev,
1245 "Could not get the PF id from VF\n");
1246 }
1247
1248 return 0;
1249
1250 fail:
1251 efx_ef10_remove(efx);
1252 return rc;
1253 }
1254 #else
1255 static int efx_ef10_probe_vf(struct efx_nic *efx __attribute__ ((unused)))
1256 {
1257 return 0;
1258 }
1259 #endif
1260
1261 static int efx_ef10_alloc_vis(struct efx_nic *efx,
1262 unsigned int min_vis, unsigned int max_vis)
1263 {
1264 MCDI_DECLARE_BUF(inbuf, MC_CMD_ALLOC_VIS_IN_LEN);
1265 MCDI_DECLARE_BUF(outbuf, MC_CMD_ALLOC_VIS_OUT_LEN);
1266 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1267 size_t outlen;
1268 int rc;
1269
1270 MCDI_SET_DWORD(inbuf, ALLOC_VIS_IN_MIN_VI_COUNT, min_vis);
1271 MCDI_SET_DWORD(inbuf, ALLOC_VIS_IN_MAX_VI_COUNT, max_vis);
1272 rc = efx_mcdi_rpc(efx, MC_CMD_ALLOC_VIS, inbuf, sizeof(inbuf),
1273 outbuf, sizeof(outbuf), &outlen);
1274 if (rc != 0)
1275 return rc;
1276
1277 if (outlen < MC_CMD_ALLOC_VIS_OUT_LEN)
1278 return -EIO;
1279
1280 netif_dbg(efx, drv, efx->net_dev, "base VI is A0x%03x\n",
1281 MCDI_DWORD(outbuf, ALLOC_VIS_OUT_VI_BASE));
1282
1283 nic_data->vi_base = MCDI_DWORD(outbuf, ALLOC_VIS_OUT_VI_BASE);
1284 nic_data->n_allocated_vis = MCDI_DWORD(outbuf, ALLOC_VIS_OUT_VI_COUNT);
1285 return 0;
1286 }
1287
1288 /* Note that the failure path of this function does not free
1289 * resources, as this will be done by efx_ef10_remove().
1290 */
1291 static int efx_ef10_dimension_resources(struct efx_nic *efx)
1292 {
1293 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1294 unsigned int uc_mem_map_size, wc_mem_map_size;
1295 unsigned int min_vis = max(EFX_TXQ_TYPES,
1296 efx_separate_tx_channels ? 2 : 1);
1297 unsigned int channel_vis, pio_write_vi_base, max_vis;
1298 void __iomem *membase;
1299 int rc;
1300
1301 channel_vis = max(efx->n_channels,
1302 (efx->n_tx_channels + efx->n_extra_tx_channels) *
1303 EFX_TXQ_TYPES);
1304
1305 #ifdef EFX_USE_PIO
1306 /* Try to allocate PIO buffers if wanted and if the full
1307 * number of PIO buffers would be sufficient to allocate one
1308 * copy-buffer per TX channel. Failure is non-fatal, as there
1309 * are only a small number of PIO buffers shared between all
1310 * functions of the controller.
1311 */
1312 if (efx_piobuf_size != 0 &&
1313 nic_data->piobuf_size / efx_piobuf_size * EF10_TX_PIOBUF_COUNT >=
1314 efx->n_tx_channels) {
1315 unsigned int n_piobufs =
1316 DIV_ROUND_UP(efx->n_tx_channels,
1317 nic_data->piobuf_size / efx_piobuf_size);
1318
1319 rc = efx_ef10_alloc_piobufs(efx, n_piobufs);
1320 if (rc == -ENOSPC)
1321 netif_dbg(efx, probe, efx->net_dev,
1322 "out of PIO buffers; cannot allocate more\n");
1323 else if (rc == -EPERM)
1324 netif_dbg(efx, probe, efx->net_dev,
1325 "not permitted to allocate PIO buffers\n");
1326 else if (rc)
1327 netif_err(efx, probe, efx->net_dev,
1328 "failed to allocate PIO buffers (%d)\n", rc);
1329 else
1330 netif_dbg(efx, probe, efx->net_dev,
1331 "allocated %u PIO buffers\n", n_piobufs);
1332 }
1333 #else
1334 nic_data->n_piobufs = 0;
1335 #endif
1336
1337 /* PIO buffers should be mapped with write-combining enabled,
1338 * and we want to make single UC and WC mappings rather than
1339 * several of each (in fact that's the only option if host
1340 * page size is >4K). So we may allocate some extra VIs just
1341 * for writing PIO buffers through.
1342 *
1343 * The UC mapping contains (channel_vis - 1) complete VIs and the
1344 * first 4K of the next VI. Then the WC mapping begins with
1345 * the remainder of this last VI.
1346 */
1347 uc_mem_map_size = PAGE_ALIGN((channel_vis - 1) * efx->vi_stride +
1348 ER_DZ_TX_PIOBUF);
1349 if (nic_data->n_piobufs) {
1350 /* pio_write_vi_base rounds down to give the number of complete
1351 * VIs inside the UC mapping.
1352 */
1353 pio_write_vi_base = uc_mem_map_size / efx->vi_stride;
1354 wc_mem_map_size = (PAGE_ALIGN((pio_write_vi_base +
1355 nic_data->n_piobufs) *
1356 efx->vi_stride) -
1357 uc_mem_map_size);
1358 max_vis = pio_write_vi_base + nic_data->n_piobufs;
1359 } else {
1360 pio_write_vi_base = 0;
1361 wc_mem_map_size = 0;
1362 max_vis = channel_vis;
1363 }
1364
1365 /* In case the last attached driver failed to free VIs, do it now */
1366 rc = efx_ef10_free_vis(efx);
1367 if (rc != 0)
1368 return rc;
1369
1370 rc = efx_ef10_alloc_vis(efx, min_vis, max_vis);
1371 if (rc != 0)
1372 return rc;
1373
1374 if (nic_data->n_allocated_vis < channel_vis) {
1375 netif_info(efx, drv, efx->net_dev,
1376 "Could not allocate enough VIs to satisfy RSS"
1377 " requirements. Performance may not be optimal.\n");
1378 /* We didn't get the VIs to populate our channels.
1379 * We could keep what we got but then we'd have more
1380 * interrupts than we need.
1381 * Instead calculate new max_channels and restart
1382 */
1383 efx->max_channels = nic_data->n_allocated_vis;
1384 efx->max_tx_channels =
1385 nic_data->n_allocated_vis / EFX_TXQ_TYPES;
1386
1387 efx_ef10_free_vis(efx);
1388 return -EAGAIN;
1389 }
1390
1391 /* If we didn't get enough VIs to map all the PIO buffers, free the
1392 * PIO buffers
1393 */
1394 if (nic_data->n_piobufs &&
1395 nic_data->n_allocated_vis <
1396 pio_write_vi_base + nic_data->n_piobufs) {
1397 netif_dbg(efx, probe, efx->net_dev,
1398 "%u VIs are not sufficient to map %u PIO buffers\n",
1399 nic_data->n_allocated_vis, nic_data->n_piobufs);
1400 efx_ef10_free_piobufs(efx);
1401 }
1402
1403 /* Shrink the original UC mapping of the memory BAR */
1404 membase = ioremap_nocache(efx->membase_phys, uc_mem_map_size);
1405 if (!membase) {
1406 netif_err(efx, probe, efx->net_dev,
1407 "could not shrink memory BAR to %x\n",
1408 uc_mem_map_size);
1409 return -ENOMEM;
1410 }
1411 iounmap(efx->membase);
1412 efx->membase = membase;
1413
1414 /* Set up the WC mapping if needed */
1415 if (wc_mem_map_size) {
1416 nic_data->wc_membase = ioremap_wc(efx->membase_phys +
1417 uc_mem_map_size,
1418 wc_mem_map_size);
1419 if (!nic_data->wc_membase) {
1420 netif_err(efx, probe, efx->net_dev,
1421 "could not allocate WC mapping of size %x\n",
1422 wc_mem_map_size);
1423 return -ENOMEM;
1424 }
1425 nic_data->pio_write_vi_base = pio_write_vi_base;
1426 nic_data->pio_write_base =
1427 nic_data->wc_membase +
1428 (pio_write_vi_base * efx->vi_stride + ER_DZ_TX_PIOBUF -
1429 uc_mem_map_size);
1430
1431 rc = efx_ef10_link_piobufs(efx);
1432 if (rc)
1433 efx_ef10_free_piobufs(efx);
1434 }
1435
1436 netif_dbg(efx, probe, efx->net_dev,
1437 "memory BAR at %pa (virtual %p+%x UC, %p+%x WC)\n",
1438 &efx->membase_phys, efx->membase, uc_mem_map_size,
1439 nic_data->wc_membase, wc_mem_map_size);
1440
1441 return 0;
1442 }
1443
1444 static int efx_ef10_init_nic(struct efx_nic *efx)
1445 {
1446 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1447 int rc;
1448
1449 if (nic_data->must_check_datapath_caps) {
1450 rc = efx_ef10_init_datapath_caps(efx);
1451 if (rc)
1452 return rc;
1453 nic_data->must_check_datapath_caps = false;
1454 }
1455
1456 if (nic_data->must_realloc_vis) {
1457 /* We cannot let the number of VIs change now */
1458 rc = efx_ef10_alloc_vis(efx, nic_data->n_allocated_vis,
1459 nic_data->n_allocated_vis);
1460 if (rc)
1461 return rc;
1462 nic_data->must_realloc_vis = false;
1463 }
1464
1465 if (nic_data->must_restore_piobufs && nic_data->n_piobufs) {
1466 rc = efx_ef10_alloc_piobufs(efx, nic_data->n_piobufs);
1467 if (rc == 0) {
1468 rc = efx_ef10_link_piobufs(efx);
1469 if (rc)
1470 efx_ef10_free_piobufs(efx);
1471 }
1472
1473 /* Log an error on failure, but this is non-fatal.
1474 * Permission errors are less important - we've presumably
1475 * had the PIO buffer licence removed.
1476 */
1477 if (rc == -EPERM)
1478 netif_dbg(efx, drv, efx->net_dev,
1479 "not permitted to restore PIO buffers\n");
1480 else if (rc)
1481 netif_err(efx, drv, efx->net_dev,
1482 "failed to restore PIO buffers (%d)\n", rc);
1483 nic_data->must_restore_piobufs = false;
1484 }
1485
1486 /* don't fail init if RSS setup doesn't work */
1487 rc = efx->type->rx_push_rss_config(efx, false,
1488 efx->rss_context.rx_indir_table, NULL);
1489
1490 return 0;
1491 }
1492
1493 static void efx_ef10_reset_mc_allocations(struct efx_nic *efx)
1494 {
1495 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1496 #ifdef CONFIG_SFC_SRIOV
1497 unsigned int i;
1498 #endif
1499
1500 /* All our allocations have been reset */
1501 nic_data->must_realloc_vis = true;
1502 nic_data->must_restore_rss_contexts = true;
1503 nic_data->must_restore_filters = true;
1504 nic_data->must_restore_piobufs = true;
1505 efx_ef10_forget_old_piobufs(efx);
1506 efx->rss_context.context_id = EFX_EF10_RSS_CONTEXT_INVALID;
1507
1508 /* Driver-created vswitches and vports must be re-created */
1509 nic_data->must_probe_vswitching = true;
1510 nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
1511 #ifdef CONFIG_SFC_SRIOV
1512 if (nic_data->vf)
1513 for (i = 0; i < efx->vf_count; i++)
1514 nic_data->vf[i].vport_id = 0;
1515 #endif
1516 }
1517
1518 static enum reset_type efx_ef10_map_reset_reason(enum reset_type reason)
1519 {
1520 if (reason == RESET_TYPE_MC_FAILURE)
1521 return RESET_TYPE_DATAPATH;
1522
1523 return efx_mcdi_map_reset_reason(reason);
1524 }
1525
1526 static int efx_ef10_map_reset_flags(u32 *flags)
1527 {
1528 enum {
1529 EF10_RESET_PORT = ((ETH_RESET_MAC | ETH_RESET_PHY) <<
1530 ETH_RESET_SHARED_SHIFT),
1531 EF10_RESET_MC = ((ETH_RESET_DMA | ETH_RESET_FILTER |
1532 ETH_RESET_OFFLOAD | ETH_RESET_MAC |
1533 ETH_RESET_PHY | ETH_RESET_MGMT) <<
1534 ETH_RESET_SHARED_SHIFT)
1535 };
1536
1537 /* We assume for now that our PCI function is permitted to
1538 * reset everything.
1539 */
1540
1541 if ((*flags & EF10_RESET_MC) == EF10_RESET_MC) {
1542 *flags &= ~EF10_RESET_MC;
1543 return RESET_TYPE_WORLD;
1544 }
1545
1546 if ((*flags & EF10_RESET_PORT) == EF10_RESET_PORT) {
1547 *flags &= ~EF10_RESET_PORT;
1548 return RESET_TYPE_ALL;
1549 }
1550
1551 /* no invisible reset implemented */
1552
1553 return -EINVAL;
1554 }
1555
1556 static int efx_ef10_reset(struct efx_nic *efx, enum reset_type reset_type)
1557 {
1558 int rc = efx_mcdi_reset(efx, reset_type);
1559
1560 /* Unprivileged functions return -EPERM, but need to return success
1561 * here so that the datapath is brought back up.
1562 */
1563 if (reset_type == RESET_TYPE_WORLD && rc == -EPERM)
1564 rc = 0;
1565
1566 /* If it was a port reset, trigger reallocation of MC resources.
1567 * Note that on an MC reset nothing needs to be done now because we'll
1568 * detect the MC reset later and handle it then.
1569 * For an FLR, we never get an MC reset event, but the MC has reset all
1570 * resources assigned to us, so we have to trigger reallocation now.
1571 */
1572 if ((reset_type == RESET_TYPE_ALL ||
1573 reset_type == RESET_TYPE_MCDI_TIMEOUT) && !rc)
1574 efx_ef10_reset_mc_allocations(efx);
1575 return rc;
1576 }
1577
1578 #define EF10_DMA_STAT(ext_name, mcdi_name) \
1579 [EF10_STAT_ ## ext_name] = \
1580 { #ext_name, 64, 8 * MC_CMD_MAC_ ## mcdi_name }
1581 #define EF10_DMA_INVIS_STAT(int_name, mcdi_name) \
1582 [EF10_STAT_ ## int_name] = \
1583 { NULL, 64, 8 * MC_CMD_MAC_ ## mcdi_name }
1584 #define EF10_OTHER_STAT(ext_name) \
1585 [EF10_STAT_ ## ext_name] = { #ext_name, 0, 0 }
1586 #define GENERIC_SW_STAT(ext_name) \
1587 [GENERIC_STAT_ ## ext_name] = { #ext_name, 0, 0 }
1588
1589 static const struct efx_hw_stat_desc efx_ef10_stat_desc[EF10_STAT_COUNT] = {
1590 EF10_DMA_STAT(port_tx_bytes, TX_BYTES),
1591 EF10_DMA_STAT(port_tx_packets, TX_PKTS),
1592 EF10_DMA_STAT(port_tx_pause, TX_PAUSE_PKTS),
1593 EF10_DMA_STAT(port_tx_control, TX_CONTROL_PKTS),
1594 EF10_DMA_STAT(port_tx_unicast, TX_UNICAST_PKTS),
1595 EF10_DMA_STAT(port_tx_multicast, TX_MULTICAST_PKTS),
1596 EF10_DMA_STAT(port_tx_broadcast, TX_BROADCAST_PKTS),
1597 EF10_DMA_STAT(port_tx_lt64, TX_LT64_PKTS),
1598 EF10_DMA_STAT(port_tx_64, TX_64_PKTS),
1599 EF10_DMA_STAT(port_tx_65_to_127, TX_65_TO_127_PKTS),
1600 EF10_DMA_STAT(port_tx_128_to_255, TX_128_TO_255_PKTS),
1601 EF10_DMA_STAT(port_tx_256_to_511, TX_256_TO_511_PKTS),
1602 EF10_DMA_STAT(port_tx_512_to_1023, TX_512_TO_1023_PKTS),
1603 EF10_DMA_STAT(port_tx_1024_to_15xx, TX_1024_TO_15XX_PKTS),
1604 EF10_DMA_STAT(port_tx_15xx_to_jumbo, TX_15XX_TO_JUMBO_PKTS),
1605 EF10_DMA_STAT(port_rx_bytes, RX_BYTES),
1606 EF10_DMA_INVIS_STAT(port_rx_bytes_minus_good_bytes, RX_BAD_BYTES),
1607 EF10_OTHER_STAT(port_rx_good_bytes),
1608 EF10_OTHER_STAT(port_rx_bad_bytes),
1609 EF10_DMA_STAT(port_rx_packets, RX_PKTS),
1610 EF10_DMA_STAT(port_rx_good, RX_GOOD_PKTS),
1611 EF10_DMA_STAT(port_rx_bad, RX_BAD_FCS_PKTS),
1612 EF10_DMA_STAT(port_rx_pause, RX_PAUSE_PKTS),
1613 EF10_DMA_STAT(port_rx_control, RX_CONTROL_PKTS),
1614 EF10_DMA_STAT(port_rx_unicast, RX_UNICAST_PKTS),
1615 EF10_DMA_STAT(port_rx_multicast, RX_MULTICAST_PKTS),
1616 EF10_DMA_STAT(port_rx_broadcast, RX_BROADCAST_PKTS),
1617 EF10_DMA_STAT(port_rx_lt64, RX_UNDERSIZE_PKTS),
1618 EF10_DMA_STAT(port_rx_64, RX_64_PKTS),
1619 EF10_DMA_STAT(port_rx_65_to_127, RX_65_TO_127_PKTS),
1620 EF10_DMA_STAT(port_rx_128_to_255, RX_128_TO_255_PKTS),
1621 EF10_DMA_STAT(port_rx_256_to_511, RX_256_TO_511_PKTS),
1622 EF10_DMA_STAT(port_rx_512_to_1023, RX_512_TO_1023_PKTS),
1623 EF10_DMA_STAT(port_rx_1024_to_15xx, RX_1024_TO_15XX_PKTS),
1624 EF10_DMA_STAT(port_rx_15xx_to_jumbo, RX_15XX_TO_JUMBO_PKTS),
1625 EF10_DMA_STAT(port_rx_gtjumbo, RX_GTJUMBO_PKTS),
1626 EF10_DMA_STAT(port_rx_bad_gtjumbo, RX_JABBER_PKTS),
1627 EF10_DMA_STAT(port_rx_overflow, RX_OVERFLOW_PKTS),
1628 EF10_DMA_STAT(port_rx_align_error, RX_ALIGN_ERROR_PKTS),
1629 EF10_DMA_STAT(port_rx_length_error, RX_LENGTH_ERROR_PKTS),
1630 EF10_DMA_STAT(port_rx_nodesc_drops, RX_NODESC_DROPS),
1631 GENERIC_SW_STAT(rx_nodesc_trunc),
1632 GENERIC_SW_STAT(rx_noskb_drops),
1633 EF10_DMA_STAT(port_rx_pm_trunc_bb_overflow, PM_TRUNC_BB_OVERFLOW),
1634 EF10_DMA_STAT(port_rx_pm_discard_bb_overflow, PM_DISCARD_BB_OVERFLOW),
1635 EF10_DMA_STAT(port_rx_pm_trunc_vfifo_full, PM_TRUNC_VFIFO_FULL),
1636 EF10_DMA_STAT(port_rx_pm_discard_vfifo_full, PM_DISCARD_VFIFO_FULL),
1637 EF10_DMA_STAT(port_rx_pm_trunc_qbb, PM_TRUNC_QBB),
1638 EF10_DMA_STAT(port_rx_pm_discard_qbb, PM_DISCARD_QBB),
1639 EF10_DMA_STAT(port_rx_pm_discard_mapping, PM_DISCARD_MAPPING),
1640 EF10_DMA_STAT(port_rx_dp_q_disabled_packets, RXDP_Q_DISABLED_PKTS),
1641 EF10_DMA_STAT(port_rx_dp_di_dropped_packets, RXDP_DI_DROPPED_PKTS),
1642 EF10_DMA_STAT(port_rx_dp_streaming_packets, RXDP_STREAMING_PKTS),
1643 EF10_DMA_STAT(port_rx_dp_hlb_fetch, RXDP_HLB_FETCH_CONDITIONS),
1644 EF10_DMA_STAT(port_rx_dp_hlb_wait, RXDP_HLB_WAIT_CONDITIONS),
1645 EF10_DMA_STAT(rx_unicast, VADAPTER_RX_UNICAST_PACKETS),
1646 EF10_DMA_STAT(rx_unicast_bytes, VADAPTER_RX_UNICAST_BYTES),
1647 EF10_DMA_STAT(rx_multicast, VADAPTER_RX_MULTICAST_PACKETS),
1648 EF10_DMA_STAT(rx_multicast_bytes, VADAPTER_RX_MULTICAST_BYTES),
1649 EF10_DMA_STAT(rx_broadcast, VADAPTER_RX_BROADCAST_PACKETS),
1650 EF10_DMA_STAT(rx_broadcast_bytes, VADAPTER_RX_BROADCAST_BYTES),
1651 EF10_DMA_STAT(rx_bad, VADAPTER_RX_BAD_PACKETS),
1652 EF10_DMA_STAT(rx_bad_bytes, VADAPTER_RX_BAD_BYTES),
1653 EF10_DMA_STAT(rx_overflow, VADAPTER_RX_OVERFLOW),
1654 EF10_DMA_STAT(tx_unicast, VADAPTER_TX_UNICAST_PACKETS),
1655 EF10_DMA_STAT(tx_unicast_bytes, VADAPTER_TX_UNICAST_BYTES),
1656 EF10_DMA_STAT(tx_multicast, VADAPTER_TX_MULTICAST_PACKETS),
1657 EF10_DMA_STAT(tx_multicast_bytes, VADAPTER_TX_MULTICAST_BYTES),
1658 EF10_DMA_STAT(tx_broadcast, VADAPTER_TX_BROADCAST_PACKETS),
1659 EF10_DMA_STAT(tx_broadcast_bytes, VADAPTER_TX_BROADCAST_BYTES),
1660 EF10_DMA_STAT(tx_bad, VADAPTER_TX_BAD_PACKETS),
1661 EF10_DMA_STAT(tx_bad_bytes, VADAPTER_TX_BAD_BYTES),
1662 EF10_DMA_STAT(tx_overflow, VADAPTER_TX_OVERFLOW),
1663 EF10_DMA_STAT(fec_uncorrected_errors, FEC_UNCORRECTED_ERRORS),
1664 EF10_DMA_STAT(fec_corrected_errors, FEC_CORRECTED_ERRORS),
1665 EF10_DMA_STAT(fec_corrected_symbols_lane0, FEC_CORRECTED_SYMBOLS_LANE0),
1666 EF10_DMA_STAT(fec_corrected_symbols_lane1, FEC_CORRECTED_SYMBOLS_LANE1),
1667 EF10_DMA_STAT(fec_corrected_symbols_lane2, FEC_CORRECTED_SYMBOLS_LANE2),
1668 EF10_DMA_STAT(fec_corrected_symbols_lane3, FEC_CORRECTED_SYMBOLS_LANE3),
1669 EF10_DMA_STAT(ctpio_vi_busy_fallback, CTPIO_VI_BUSY_FALLBACK),
1670 EF10_DMA_STAT(ctpio_long_write_success, CTPIO_LONG_WRITE_SUCCESS),
1671 EF10_DMA_STAT(ctpio_missing_dbell_fail, CTPIO_MISSING_DBELL_FAIL),
1672 EF10_DMA_STAT(ctpio_overflow_fail, CTPIO_OVERFLOW_FAIL),
1673 EF10_DMA_STAT(ctpio_underflow_fail, CTPIO_UNDERFLOW_FAIL),
1674 EF10_DMA_STAT(ctpio_timeout_fail, CTPIO_TIMEOUT_FAIL),
1675 EF10_DMA_STAT(ctpio_noncontig_wr_fail, CTPIO_NONCONTIG_WR_FAIL),
1676 EF10_DMA_STAT(ctpio_frm_clobber_fail, CTPIO_FRM_CLOBBER_FAIL),
1677 EF10_DMA_STAT(ctpio_invalid_wr_fail, CTPIO_INVALID_WR_FAIL),
1678 EF10_DMA_STAT(ctpio_vi_clobber_fallback, CTPIO_VI_CLOBBER_FALLBACK),
1679 EF10_DMA_STAT(ctpio_unqualified_fallback, CTPIO_UNQUALIFIED_FALLBACK),
1680 EF10_DMA_STAT(ctpio_runt_fallback, CTPIO_RUNT_FALLBACK),
1681 EF10_DMA_STAT(ctpio_success, CTPIO_SUCCESS),
1682 EF10_DMA_STAT(ctpio_fallback, CTPIO_FALLBACK),
1683 EF10_DMA_STAT(ctpio_poison, CTPIO_POISON),
1684 EF10_DMA_STAT(ctpio_erase, CTPIO_ERASE),
1685 };
1686
1687 #define HUNT_COMMON_STAT_MASK ((1ULL << EF10_STAT_port_tx_bytes) | \
1688 (1ULL << EF10_STAT_port_tx_packets) | \
1689 (1ULL << EF10_STAT_port_tx_pause) | \
1690 (1ULL << EF10_STAT_port_tx_unicast) | \
1691 (1ULL << EF10_STAT_port_tx_multicast) | \
1692 (1ULL << EF10_STAT_port_tx_broadcast) | \
1693 (1ULL << EF10_STAT_port_rx_bytes) | \
1694 (1ULL << \
1695 EF10_STAT_port_rx_bytes_minus_good_bytes) | \
1696 (1ULL << EF10_STAT_port_rx_good_bytes) | \
1697 (1ULL << EF10_STAT_port_rx_bad_bytes) | \
1698 (1ULL << EF10_STAT_port_rx_packets) | \
1699 (1ULL << EF10_STAT_port_rx_good) | \
1700 (1ULL << EF10_STAT_port_rx_bad) | \
1701 (1ULL << EF10_STAT_port_rx_pause) | \
1702 (1ULL << EF10_STAT_port_rx_control) | \
1703 (1ULL << EF10_STAT_port_rx_unicast) | \
1704 (1ULL << EF10_STAT_port_rx_multicast) | \
1705 (1ULL << EF10_STAT_port_rx_broadcast) | \
1706 (1ULL << EF10_STAT_port_rx_lt64) | \
1707 (1ULL << EF10_STAT_port_rx_64) | \
1708 (1ULL << EF10_STAT_port_rx_65_to_127) | \
1709 (1ULL << EF10_STAT_port_rx_128_to_255) | \
1710 (1ULL << EF10_STAT_port_rx_256_to_511) | \
1711 (1ULL << EF10_STAT_port_rx_512_to_1023) |\
1712 (1ULL << EF10_STAT_port_rx_1024_to_15xx) |\
1713 (1ULL << EF10_STAT_port_rx_15xx_to_jumbo) |\
1714 (1ULL << EF10_STAT_port_rx_gtjumbo) | \
1715 (1ULL << EF10_STAT_port_rx_bad_gtjumbo) |\
1716 (1ULL << EF10_STAT_port_rx_overflow) | \
1717 (1ULL << EF10_STAT_port_rx_nodesc_drops) |\
1718 (1ULL << GENERIC_STAT_rx_nodesc_trunc) | \
1719 (1ULL << GENERIC_STAT_rx_noskb_drops))
1720
1721 /* On 7000 series NICs, these statistics are only provided by the 10G MAC.
1722 * For a 10G/40G switchable port we do not expose these because they might
1723 * not include all the packets they should.
1724 * On 8000 series NICs these statistics are always provided.
1725 */
1726 #define HUNT_10G_ONLY_STAT_MASK ((1ULL << EF10_STAT_port_tx_control) | \
1727 (1ULL << EF10_STAT_port_tx_lt64) | \
1728 (1ULL << EF10_STAT_port_tx_64) | \
1729 (1ULL << EF10_STAT_port_tx_65_to_127) |\
1730 (1ULL << EF10_STAT_port_tx_128_to_255) |\
1731 (1ULL << EF10_STAT_port_tx_256_to_511) |\
1732 (1ULL << EF10_STAT_port_tx_512_to_1023) |\
1733 (1ULL << EF10_STAT_port_tx_1024_to_15xx) |\
1734 (1ULL << EF10_STAT_port_tx_15xx_to_jumbo))
1735
1736 /* These statistics are only provided by the 40G MAC. For a 10G/40G
1737 * switchable port we do expose these because the errors will otherwise
1738 * be silent.
1739 */
1740 #define HUNT_40G_EXTRA_STAT_MASK ((1ULL << EF10_STAT_port_rx_align_error) |\
1741 (1ULL << EF10_STAT_port_rx_length_error))
1742
1743 /* These statistics are only provided if the firmware supports the
1744 * capability PM_AND_RXDP_COUNTERS.
1745 */
1746 #define HUNT_PM_AND_RXDP_STAT_MASK ( \
1747 (1ULL << EF10_STAT_port_rx_pm_trunc_bb_overflow) | \
1748 (1ULL << EF10_STAT_port_rx_pm_discard_bb_overflow) | \
1749 (1ULL << EF10_STAT_port_rx_pm_trunc_vfifo_full) | \
1750 (1ULL << EF10_STAT_port_rx_pm_discard_vfifo_full) | \
1751 (1ULL << EF10_STAT_port_rx_pm_trunc_qbb) | \
1752 (1ULL << EF10_STAT_port_rx_pm_discard_qbb) | \
1753 (1ULL << EF10_STAT_port_rx_pm_discard_mapping) | \
1754 (1ULL << EF10_STAT_port_rx_dp_q_disabled_packets) | \
1755 (1ULL << EF10_STAT_port_rx_dp_di_dropped_packets) | \
1756 (1ULL << EF10_STAT_port_rx_dp_streaming_packets) | \
1757 (1ULL << EF10_STAT_port_rx_dp_hlb_fetch) | \
1758 (1ULL << EF10_STAT_port_rx_dp_hlb_wait))
1759
1760 /* These statistics are only provided if the NIC supports MC_CMD_MAC_STATS_V2,
1761 * indicated by returning a value >= MC_CMD_MAC_NSTATS_V2 in
1762 * MC_CMD_GET_CAPABILITIES_V4_OUT_MAC_STATS_NUM_STATS.
1763 * These bits are in the second u64 of the raw mask.
1764 */
1765 #define EF10_FEC_STAT_MASK ( \
1766 (1ULL << (EF10_STAT_fec_uncorrected_errors - 64)) | \
1767 (1ULL << (EF10_STAT_fec_corrected_errors - 64)) | \
1768 (1ULL << (EF10_STAT_fec_corrected_symbols_lane0 - 64)) | \
1769 (1ULL << (EF10_STAT_fec_corrected_symbols_lane1 - 64)) | \
1770 (1ULL << (EF10_STAT_fec_corrected_symbols_lane2 - 64)) | \
1771 (1ULL << (EF10_STAT_fec_corrected_symbols_lane3 - 64)))
1772
1773 /* These statistics are only provided if the NIC supports MC_CMD_MAC_STATS_V3,
1774 * indicated by returning a value >= MC_CMD_MAC_NSTATS_V3 in
1775 * MC_CMD_GET_CAPABILITIES_V4_OUT_MAC_STATS_NUM_STATS.
1776 * These bits are in the second u64 of the raw mask.
1777 */
1778 #define EF10_CTPIO_STAT_MASK ( \
1779 (1ULL << (EF10_STAT_ctpio_vi_busy_fallback - 64)) | \
1780 (1ULL << (EF10_STAT_ctpio_long_write_success - 64)) | \
1781 (1ULL << (EF10_STAT_ctpio_missing_dbell_fail - 64)) | \
1782 (1ULL << (EF10_STAT_ctpio_overflow_fail - 64)) | \
1783 (1ULL << (EF10_STAT_ctpio_underflow_fail - 64)) | \
1784 (1ULL << (EF10_STAT_ctpio_timeout_fail - 64)) | \
1785 (1ULL << (EF10_STAT_ctpio_noncontig_wr_fail - 64)) | \
1786 (1ULL << (EF10_STAT_ctpio_frm_clobber_fail - 64)) | \
1787 (1ULL << (EF10_STAT_ctpio_invalid_wr_fail - 64)) | \
1788 (1ULL << (EF10_STAT_ctpio_vi_clobber_fallback - 64)) | \
1789 (1ULL << (EF10_STAT_ctpio_unqualified_fallback - 64)) | \
1790 (1ULL << (EF10_STAT_ctpio_runt_fallback - 64)) | \
1791 (1ULL << (EF10_STAT_ctpio_success - 64)) | \
1792 (1ULL << (EF10_STAT_ctpio_fallback - 64)) | \
1793 (1ULL << (EF10_STAT_ctpio_poison - 64)) | \
1794 (1ULL << (EF10_STAT_ctpio_erase - 64)))
1795
1796 static u64 efx_ef10_raw_stat_mask(struct efx_nic *efx)
1797 {
1798 u64 raw_mask = HUNT_COMMON_STAT_MASK;
1799 u32 port_caps = efx_mcdi_phy_get_caps(efx);
1800 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1801
1802 if (!(efx->mcdi->fn_flags &
1803 1 << MC_CMD_DRV_ATTACH_EXT_OUT_FLAG_LINKCTRL))
1804 return 0;
1805
1806 if (port_caps & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) {
1807 raw_mask |= HUNT_40G_EXTRA_STAT_MASK;
1808 /* 8000 series have everything even at 40G */
1809 if (nic_data->datapath_caps2 &
1810 (1 << MC_CMD_GET_CAPABILITIES_V2_OUT_MAC_STATS_40G_TX_SIZE_BINS_LBN))
1811 raw_mask |= HUNT_10G_ONLY_STAT_MASK;
1812 } else {
1813 raw_mask |= HUNT_10G_ONLY_STAT_MASK;
1814 }
1815
1816 if (nic_data->datapath_caps &
1817 (1 << MC_CMD_GET_CAPABILITIES_OUT_PM_AND_RXDP_COUNTERS_LBN))
1818 raw_mask |= HUNT_PM_AND_RXDP_STAT_MASK;
1819
1820 return raw_mask;
1821 }
1822
1823 static void efx_ef10_get_stat_mask(struct efx_nic *efx, unsigned long *mask)
1824 {
1825 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1826 u64 raw_mask[2];
1827
1828 raw_mask[0] = efx_ef10_raw_stat_mask(efx);
1829
1830 /* Only show vadaptor stats when EVB capability is present */
1831 if (nic_data->datapath_caps &
1832 (1 << MC_CMD_GET_CAPABILITIES_OUT_EVB_LBN)) {
1833 raw_mask[0] |= ~((1ULL << EF10_STAT_rx_unicast) - 1);
1834 raw_mask[1] = (1ULL << (EF10_STAT_V1_COUNT - 64)) - 1;
1835 } else {
1836 raw_mask[1] = 0;
1837 }
1838 /* Only show FEC stats when NIC supports MC_CMD_MAC_STATS_V2 */
1839 if (efx->num_mac_stats >= MC_CMD_MAC_NSTATS_V2)
1840 raw_mask[1] |= EF10_FEC_STAT_MASK;
1841
1842 /* CTPIO stats appear in V3. Only show them on devices that actually
1843 * support CTPIO. Although this driver doesn't use CTPIO others might,
1844 * and we may be reporting the stats for the underlying port.
1845 */
1846 if (efx->num_mac_stats >= MC_CMD_MAC_NSTATS_V3 &&
1847 (nic_data->datapath_caps2 &
1848 (1 << MC_CMD_GET_CAPABILITIES_V4_OUT_CTPIO_LBN)))
1849 raw_mask[1] |= EF10_CTPIO_STAT_MASK;
1850
1851 #if BITS_PER_LONG == 64
1852 BUILD_BUG_ON(BITS_TO_LONGS(EF10_STAT_COUNT) != 2);
1853 mask[0] = raw_mask[0];
1854 mask[1] = raw_mask[1];
1855 #else
1856 BUILD_BUG_ON(BITS_TO_LONGS(EF10_STAT_COUNT) != 3);
1857 mask[0] = raw_mask[0] & 0xffffffff;
1858 mask[1] = raw_mask[0] >> 32;
1859 mask[2] = raw_mask[1] & 0xffffffff;
1860 #endif
1861 }
1862
1863 static size_t efx_ef10_describe_stats(struct efx_nic *efx, u8 *names)
1864 {
1865 DECLARE_BITMAP(mask, EF10_STAT_COUNT);
1866
1867 efx_ef10_get_stat_mask(efx, mask);
1868 return efx_nic_describe_stats(efx_ef10_stat_desc, EF10_STAT_COUNT,
1869 mask, names);
1870 }
1871
1872 static size_t efx_ef10_update_stats_common(struct efx_nic *efx, u64 *full_stats,
1873 struct rtnl_link_stats64 *core_stats)
1874 {
1875 DECLARE_BITMAP(mask, EF10_STAT_COUNT);
1876 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1877 u64 *stats = nic_data->stats;
1878 size_t stats_count = 0, index;
1879
1880 efx_ef10_get_stat_mask(efx, mask);
1881
1882 if (full_stats) {
1883 for_each_set_bit(index, mask, EF10_STAT_COUNT) {
1884 if (efx_ef10_stat_desc[index].name) {
1885 *full_stats++ = stats[index];
1886 ++stats_count;
1887 }
1888 }
1889 }
1890
1891 if (!core_stats)
1892 return stats_count;
1893
1894 if (nic_data->datapath_caps &
1895 1 << MC_CMD_GET_CAPABILITIES_OUT_EVB_LBN) {
1896 /* Use vadaptor stats. */
1897 core_stats->rx_packets = stats[EF10_STAT_rx_unicast] +
1898 stats[EF10_STAT_rx_multicast] +
1899 stats[EF10_STAT_rx_broadcast];
1900 core_stats->tx_packets = stats[EF10_STAT_tx_unicast] +
1901 stats[EF10_STAT_tx_multicast] +
1902 stats[EF10_STAT_tx_broadcast];
1903 core_stats->rx_bytes = stats[EF10_STAT_rx_unicast_bytes] +
1904 stats[EF10_STAT_rx_multicast_bytes] +
1905 stats[EF10_STAT_rx_broadcast_bytes];
1906 core_stats->tx_bytes = stats[EF10_STAT_tx_unicast_bytes] +
1907 stats[EF10_STAT_tx_multicast_bytes] +
1908 stats[EF10_STAT_tx_broadcast_bytes];
1909 core_stats->rx_dropped = stats[GENERIC_STAT_rx_nodesc_trunc] +
1910 stats[GENERIC_STAT_rx_noskb_drops];
1911 core_stats->multicast = stats[EF10_STAT_rx_multicast];
1912 core_stats->rx_crc_errors = stats[EF10_STAT_rx_bad];
1913 core_stats->rx_fifo_errors = stats[EF10_STAT_rx_overflow];
1914 core_stats->rx_errors = core_stats->rx_crc_errors;
1915 core_stats->tx_errors = stats[EF10_STAT_tx_bad];
1916 } else {
1917 /* Use port stats. */
1918 core_stats->rx_packets = stats[EF10_STAT_port_rx_packets];
1919 core_stats->tx_packets = stats[EF10_STAT_port_tx_packets];
1920 core_stats->rx_bytes = stats[EF10_STAT_port_rx_bytes];
1921 core_stats->tx_bytes = stats[EF10_STAT_port_tx_bytes];
1922 core_stats->rx_dropped = stats[EF10_STAT_port_rx_nodesc_drops] +
1923 stats[GENERIC_STAT_rx_nodesc_trunc] +
1924 stats[GENERIC_STAT_rx_noskb_drops];
1925 core_stats->multicast = stats[EF10_STAT_port_rx_multicast];
1926 core_stats->rx_length_errors =
1927 stats[EF10_STAT_port_rx_gtjumbo] +
1928 stats[EF10_STAT_port_rx_length_error];
1929 core_stats->rx_crc_errors = stats[EF10_STAT_port_rx_bad];
1930 core_stats->rx_frame_errors =
1931 stats[EF10_STAT_port_rx_align_error];
1932 core_stats->rx_fifo_errors = stats[EF10_STAT_port_rx_overflow];
1933 core_stats->rx_errors = (core_stats->rx_length_errors +
1934 core_stats->rx_crc_errors +
1935 core_stats->rx_frame_errors);
1936 }
1937
1938 return stats_count;
1939 }
1940
1941 static int efx_ef10_try_update_nic_stats_pf(struct efx_nic *efx)
1942 {
1943 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1944 DECLARE_BITMAP(mask, EF10_STAT_COUNT);
1945 __le64 generation_start, generation_end;
1946 u64 *stats = nic_data->stats;
1947 __le64 *dma_stats;
1948
1949 efx_ef10_get_stat_mask(efx, mask);
1950
1951 dma_stats = efx->stats_buffer.addr;
1952
1953 generation_end = dma_stats[efx->num_mac_stats - 1];
1954 if (generation_end == EFX_MC_STATS_GENERATION_INVALID)
1955 return 0;
1956 rmb();
1957 efx_nic_update_stats(efx_ef10_stat_desc, EF10_STAT_COUNT, mask,
1958 stats, efx->stats_buffer.addr, false);
1959 rmb();
1960 generation_start = dma_stats[MC_CMD_MAC_GENERATION_START];
1961 if (generation_end != generation_start)
1962 return -EAGAIN;
1963
1964 /* Update derived statistics */
1965 efx_nic_fix_nodesc_drop_stat(efx,
1966 &stats[EF10_STAT_port_rx_nodesc_drops]);
1967 stats[EF10_STAT_port_rx_good_bytes] =
1968 stats[EF10_STAT_port_rx_bytes] -
1969 stats[EF10_STAT_port_rx_bytes_minus_good_bytes];
1970 efx_update_diff_stat(&stats[EF10_STAT_port_rx_bad_bytes],
1971 stats[EF10_STAT_port_rx_bytes_minus_good_bytes]);
1972 efx_update_sw_stats(efx, stats);
1973 return 0;
1974 }
1975
1976
1977 static size_t efx_ef10_update_stats_pf(struct efx_nic *efx, u64 *full_stats,
1978 struct rtnl_link_stats64 *core_stats)
1979 {
1980 int retry;
1981
1982 /* If we're unlucky enough to read statistics during the DMA, wait
1983 * up to 10ms for it to finish (typically takes <500us)
1984 */
1985 for (retry = 0; retry < 100; ++retry) {
1986 if (efx_ef10_try_update_nic_stats_pf(efx) == 0)
1987 break;
1988 udelay(100);
1989 }
1990
1991 return efx_ef10_update_stats_common(efx, full_stats, core_stats);
1992 }
1993
1994 static int efx_ef10_try_update_nic_stats_vf(struct efx_nic *efx)
1995 {
1996 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);
1997 struct efx_ef10_nic_data *nic_data = efx->nic_data;
1998 DECLARE_BITMAP(mask, EF10_STAT_COUNT);
1999 __le64 generation_start, generation_end;
2000 u64 *stats = nic_data->stats;
2001 u32 dma_len = efx->num_mac_stats * sizeof(u64);
2002 struct efx_buffer stats_buf;
2003 __le64 *dma_stats;
2004 int rc;
2005
2006 spin_unlock_bh(&efx->stats_lock);
2007
2008 if (in_interrupt()) {
2009 /* If in atomic context, cannot update stats. Just update the
2010 * software stats and return so the caller can continue.
2011 */
2012 spin_lock_bh(&efx->stats_lock);
2013 efx_update_sw_stats(efx, stats);
2014 return 0;
2015 }
2016
2017 efx_ef10_get_stat_mask(efx, mask);
2018
2019 rc = efx_nic_alloc_buffer(efx, &stats_buf, dma_len, GFP_ATOMIC);
2020 if (rc) {
2021 spin_lock_bh(&efx->stats_lock);
2022 return rc;
2023 }
2024
2025 dma_stats = stats_buf.addr;
2026 dma_stats[efx->num_mac_stats - 1] = EFX_MC_STATS_GENERATION_INVALID;
2027
2028 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, stats_buf.dma_addr);
2029 MCDI_POPULATE_DWORD_1(inbuf, MAC_STATS_IN_CMD,
2030 MAC_STATS_IN_DMA, 1);
2031 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
2032 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, EVB_PORT_ID_ASSIGNED);
2033
2034 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
2035 NULL, 0, NULL);
2036 spin_lock_bh(&efx->stats_lock);
2037 if (rc) {
2038 /* Expect ENOENT if DMA queues have not been set up */
2039 if (rc != -ENOENT || atomic_read(&efx->active_queues))
2040 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS,
2041 sizeof(inbuf), NULL, 0, rc);
2042 goto out;
2043 }
2044
2045 generation_end = dma_stats[efx->num_mac_stats - 1];
2046 if (generation_end == EFX_MC_STATS_GENERATION_INVALID) {
2047 WARN_ON_ONCE(1);
2048 goto out;
2049 }
2050 rmb();
2051 efx_nic_update_stats(efx_ef10_stat_desc, EF10_STAT_COUNT, mask,
2052 stats, stats_buf.addr, false);
2053 rmb();
2054 generation_start = dma_stats[MC_CMD_MAC_GENERATION_START];
2055 if (generation_end != generation_start) {
2056 rc = -EAGAIN;
2057 goto out;
2058 }
2059
2060 efx_update_sw_stats(efx, stats);
2061 out:
2062 efx_nic_free_buffer(efx, &stats_buf);
2063 return rc;
2064 }
2065
2066 static size_t efx_ef10_update_stats_vf(struct efx_nic *efx, u64 *full_stats,
2067 struct rtnl_link_stats64 *core_stats)
2068 {
2069 if (efx_ef10_try_update_nic_stats_vf(efx))
2070 return 0;
2071
2072 return efx_ef10_update_stats_common(efx, full_stats, core_stats);
2073 }
2074
2075 static void efx_ef10_push_irq_moderation(struct efx_channel *channel)
2076 {
2077 struct efx_nic *efx = channel->efx;
2078 unsigned int mode, usecs;
2079 efx_dword_t timer_cmd;
2080
2081 if (channel->irq_moderation_us) {
2082 mode = 3;
2083 usecs = channel->irq_moderation_us;
2084 } else {
2085 mode = 0;
2086 usecs = 0;
2087 }
2088
2089 if (EFX_EF10_WORKAROUND_61265(efx)) {
2090 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_EVQ_TMR_IN_LEN);
2091 unsigned int ns = usecs * 1000;
2092
2093 MCDI_SET_DWORD(inbuf, SET_EVQ_TMR_IN_INSTANCE,
2094 channel->channel);
2095 MCDI_SET_DWORD(inbuf, SET_EVQ_TMR_IN_TMR_LOAD_REQ_NS, ns);
2096 MCDI_SET_DWORD(inbuf, SET_EVQ_TMR_IN_TMR_RELOAD_REQ_NS, ns);
2097 MCDI_SET_DWORD(inbuf, SET_EVQ_TMR_IN_TMR_MODE, mode);
2098
2099 efx_mcdi_rpc_async(efx, MC_CMD_SET_EVQ_TMR,
2100 inbuf, sizeof(inbuf), 0, NULL, 0);
2101 } else if (EFX_EF10_WORKAROUND_35388(efx)) {
2102 unsigned int ticks = efx_usecs_to_ticks(efx, usecs);
2103
2104 EFX_POPULATE_DWORD_3(timer_cmd, ERF_DD_EVQ_IND_TIMER_FLAGS,
2105 EFE_DD_EVQ_IND_TIMER_FLAGS,
2106 ERF_DD_EVQ_IND_TIMER_MODE, mode,
2107 ERF_DD_EVQ_IND_TIMER_VAL, ticks);
2108 efx_writed_page(efx, &timer_cmd, ER_DD_EVQ_INDIRECT,
2109 channel->channel);
2110 } else {
2111 unsigned int ticks = efx_usecs_to_ticks(efx, usecs);
2112
2113 EFX_POPULATE_DWORD_3(timer_cmd, ERF_DZ_TC_TIMER_MODE, mode,
2114 ERF_DZ_TC_TIMER_VAL, ticks,
2115 ERF_FZ_TC_TMR_REL_VAL, ticks);
2116 efx_writed_page(efx, &timer_cmd, ER_DZ_EVQ_TMR,
2117 channel->channel);
2118 }
2119 }
2120
2121 static void efx_ef10_get_wol_vf(struct efx_nic *efx,
2122 struct ethtool_wolinfo *wol) {}
2123
2124 static int efx_ef10_set_wol_vf(struct efx_nic *efx, u32 type)
2125 {
2126 return -EOPNOTSUPP;
2127 }
2128
2129 static void efx_ef10_get_wol(struct efx_nic *efx, struct ethtool_wolinfo *wol)
2130 {
2131 wol->supported = 0;
2132 wol->wolopts = 0;
2133 memset(&wol->sopass, 0, sizeof(wol->sopass));
2134 }
2135
2136 static int efx_ef10_set_wol(struct efx_nic *efx, u32 type)
2137 {
2138 if (type != 0)
2139 return -EINVAL;
2140 return 0;
2141 }
2142
2143 static void efx_ef10_mcdi_request(struct efx_nic *efx,
2144 const efx_dword_t *hdr, size_t hdr_len,
2145 const efx_dword_t *sdu, size_t sdu_len)
2146 {
2147 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2148 u8 *pdu = nic_data->mcdi_buf.addr;
2149
2150 memcpy(pdu, hdr, hdr_len);
2151 memcpy(pdu + hdr_len, sdu, sdu_len);
2152 wmb();
2153
2154 /* The hardware provides 'low' and 'high' (doorbell) registers
2155 * for passing the 64-bit address of an MCDI request to
2156 * firmware. However the dwords are swapped by firmware. The
2157 * least significant bits of the doorbell are then 0 for all
2158 * MCDI requests due to alignment.
2159 */
2160 _efx_writed(efx, cpu_to_le32((u64)nic_data->mcdi_buf.dma_addr >> 32),
2161 ER_DZ_MC_DB_LWRD);
2162 _efx_writed(efx, cpu_to_le32((u32)nic_data->mcdi_buf.dma_addr),
2163 ER_DZ_MC_DB_HWRD);
2164 }
2165
2166 static bool efx_ef10_mcdi_poll_response(struct efx_nic *efx)
2167 {
2168 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2169 const efx_dword_t hdr = *(const efx_dword_t *)nic_data->mcdi_buf.addr;
2170
2171 rmb();
2172 return EFX_DWORD_FIELD(hdr, MCDI_HEADER_RESPONSE);
2173 }
2174
2175 static void
2176 efx_ef10_mcdi_read_response(struct efx_nic *efx, efx_dword_t *outbuf,
2177 size_t offset, size_t outlen)
2178 {
2179 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2180 const u8 *pdu = nic_data->mcdi_buf.addr;
2181
2182 memcpy(outbuf, pdu + offset, outlen);
2183 }
2184
2185 static void efx_ef10_mcdi_reboot_detected(struct efx_nic *efx)
2186 {
2187 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2188
2189 /* All our allocations have been reset */
2190 efx_ef10_reset_mc_allocations(efx);
2191
2192 /* The datapath firmware might have been changed */
2193 nic_data->must_check_datapath_caps = true;
2194
2195 /* MAC statistics have been cleared on the NIC; clear the local
2196 * statistic that we update with efx_update_diff_stat().
2197 */
2198 nic_data->stats[EF10_STAT_port_rx_bad_bytes] = 0;
2199 }
2200
2201 static int efx_ef10_mcdi_poll_reboot(struct efx_nic *efx)
2202 {
2203 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2204 int rc;
2205
2206 rc = efx_ef10_get_warm_boot_count(efx);
2207 if (rc < 0) {
2208 /* The firmware is presumably in the process of
2209 * rebooting. However, we are supposed to report each
2210 * reboot just once, so we must only do that once we
2211 * can read and store the updated warm boot count.
2212 */
2213 return 0;
2214 }
2215
2216 if (rc == nic_data->warm_boot_count)
2217 return 0;
2218
2219 nic_data->warm_boot_count = rc;
2220 efx_ef10_mcdi_reboot_detected(efx);
2221
2222 return -EIO;
2223 }
2224
2225 /* Handle an MSI interrupt
2226 *
2227 * Handle an MSI hardware interrupt. This routine schedules event
2228 * queue processing. No interrupt acknowledgement cycle is necessary.
2229 * Also, we never need to check that the interrupt is for us, since
2230 * MSI interrupts cannot be shared.
2231 */
2232 static irqreturn_t efx_ef10_msi_interrupt(int irq, void *dev_id)
2233 {
2234 struct efx_msi_context *context = dev_id;
2235 struct efx_nic *efx = context->efx;
2236
2237 netif_vdbg(efx, intr, efx->net_dev,
2238 "IRQ %d on CPU %d\n", irq, raw_smp_processor_id());
2239
2240 if (likely(READ_ONCE(efx->irq_soft_enabled))) {
2241 /* Note test interrupts */
2242 if (context->index == efx->irq_level)
2243 efx->last_irq_cpu = raw_smp_processor_id();
2244
2245 /* Schedule processing of the channel */
2246 efx_schedule_channel_irq(efx->channel[context->index]);
2247 }
2248
2249 return IRQ_HANDLED;
2250 }
2251
2252 static irqreturn_t efx_ef10_legacy_interrupt(int irq, void *dev_id)
2253 {
2254 struct efx_nic *efx = dev_id;
2255 bool soft_enabled = READ_ONCE(efx->irq_soft_enabled);
2256 struct efx_channel *channel;
2257 efx_dword_t reg;
2258 u32 queues;
2259
2260 /* Read the ISR which also ACKs the interrupts */
2261 efx_readd(efx, &reg, ER_DZ_BIU_INT_ISR);
2262 queues = EFX_DWORD_FIELD(reg, ERF_DZ_ISR_REG);
2263
2264 if (queues == 0)
2265 return IRQ_NONE;
2266
2267 if (likely(soft_enabled)) {
2268 /* Note test interrupts */
2269 if (queues & (1U << efx->irq_level))
2270 efx->last_irq_cpu = raw_smp_processor_id();
2271
2272 efx_for_each_channel(channel, efx) {
2273 if (queues & 1)
2274 efx_schedule_channel_irq(channel);
2275 queues >>= 1;
2276 }
2277 }
2278
2279 netif_vdbg(efx, intr, efx->net_dev,
2280 "IRQ %d on CPU %d status " EFX_DWORD_FMT "\n",
2281 irq, raw_smp_processor_id(), EFX_DWORD_VAL(reg));
2282
2283 return IRQ_HANDLED;
2284 }
2285
2286 static int efx_ef10_irq_test_generate(struct efx_nic *efx)
2287 {
2288 MCDI_DECLARE_BUF(inbuf, MC_CMD_TRIGGER_INTERRUPT_IN_LEN);
2289
2290 if (efx_mcdi_set_workaround(efx, MC_CMD_WORKAROUND_BUG41750, true,
2291 NULL) == 0)
2292 return -ENOTSUPP;
2293
2294 BUILD_BUG_ON(MC_CMD_TRIGGER_INTERRUPT_OUT_LEN != 0);
2295
2296 MCDI_SET_DWORD(inbuf, TRIGGER_INTERRUPT_IN_INTR_LEVEL, efx->irq_level);
2297 return efx_mcdi_rpc(efx, MC_CMD_TRIGGER_INTERRUPT,
2298 inbuf, sizeof(inbuf), NULL, 0, NULL);
2299 }
2300
2301 static int efx_ef10_tx_probe(struct efx_tx_queue *tx_queue)
2302 {
2303 return efx_nic_alloc_buffer(tx_queue->efx, &tx_queue->txd.buf,
2304 (tx_queue->ptr_mask + 1) *
2305 sizeof(efx_qword_t),
2306 GFP_KERNEL);
2307 }
2308
2309 /* This writes to the TX_DESC_WPTR and also pushes data */
2310 static inline void efx_ef10_push_tx_desc(struct efx_tx_queue *tx_queue,
2311 const efx_qword_t *txd)
2312 {
2313 unsigned int write_ptr;
2314 efx_oword_t reg;
2315
2316 write_ptr = tx_queue->write_count & tx_queue->ptr_mask;
2317 EFX_POPULATE_OWORD_1(reg, ERF_DZ_TX_DESC_WPTR, write_ptr);
2318 reg.qword[0] = *txd;
2319 efx_writeo_page(tx_queue->efx, &reg,
2320 ER_DZ_TX_DESC_UPD, tx_queue->queue);
2321 }
2322
2323 /* Add Firmware-Assisted TSO v2 option descriptors to a queue.
2324 */
2325 static int efx_ef10_tx_tso_desc(struct efx_tx_queue *tx_queue,
2326 struct sk_buff *skb,
2327 bool *data_mapped)
2328 {
2329 struct efx_tx_buffer *buffer;
2330 struct tcphdr *tcp;
2331 struct iphdr *ip;
2332
2333 u16 ipv4_id;
2334 u32 seqnum;
2335 u32 mss;
2336
2337 EFX_WARN_ON_ONCE_PARANOID(tx_queue->tso_version != 2);
2338
2339 mss = skb_shinfo(skb)->gso_size;
2340
2341 if (unlikely(mss < 4)) {
2342 WARN_ONCE(1, "MSS of %u is too small for TSO v2\n", mss);
2343 return -EINVAL;
2344 }
2345
2346 ip = ip_hdr(skb);
2347 if (ip->version == 4) {
2348 /* Modify IPv4 header if needed. */
2349 ip->tot_len = 0;
2350 ip->check = 0;
2351 ipv4_id = ntohs(ip->id);
2352 } else {
2353 /* Modify IPv6 header if needed. */
2354 struct ipv6hdr *ipv6 = ipv6_hdr(skb);
2355
2356 ipv6->payload_len = 0;
2357 ipv4_id = 0;
2358 }
2359
2360 tcp = tcp_hdr(skb);
2361 seqnum = ntohl(tcp->seq);
2362
2363 buffer = efx_tx_queue_get_insert_buffer(tx_queue);
2364
2365 buffer->flags = EFX_TX_BUF_OPTION;
2366 buffer->len = 0;
2367 buffer->unmap_len = 0;
2368 EFX_POPULATE_QWORD_5(buffer->option,
2369 ESF_DZ_TX_DESC_IS_OPT, 1,
2370 ESF_DZ_TX_OPTION_TYPE, ESE_DZ_TX_OPTION_DESC_TSO,
2371 ESF_DZ_TX_TSO_OPTION_TYPE,
2372 ESE_DZ_TX_TSO_OPTION_DESC_FATSO2A,
2373 ESF_DZ_TX_TSO_IP_ID, ipv4_id,
2374 ESF_DZ_TX_TSO_TCP_SEQNO, seqnum
2375 );
2376 ++tx_queue->insert_count;
2377
2378 buffer = efx_tx_queue_get_insert_buffer(tx_queue);
2379
2380 buffer->flags = EFX_TX_BUF_OPTION;
2381 buffer->len = 0;
2382 buffer->unmap_len = 0;
2383 EFX_POPULATE_QWORD_4(buffer->option,
2384 ESF_DZ_TX_DESC_IS_OPT, 1,
2385 ESF_DZ_TX_OPTION_TYPE, ESE_DZ_TX_OPTION_DESC_TSO,
2386 ESF_DZ_TX_TSO_OPTION_TYPE,
2387 ESE_DZ_TX_TSO_OPTION_DESC_FATSO2B,
2388 ESF_DZ_TX_TSO_TCP_MSS, mss
2389 );
2390 ++tx_queue->insert_count;
2391
2392 return 0;
2393 }
2394
2395 static u32 efx_ef10_tso_versions(struct efx_nic *efx)
2396 {
2397 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2398 u32 tso_versions = 0;
2399
2400 if (nic_data->datapath_caps &
2401 (1 << MC_CMD_GET_CAPABILITIES_OUT_TX_TSO_LBN))
2402 tso_versions |= BIT(1);
2403 if (nic_data->datapath_caps2 &
2404 (1 << MC_CMD_GET_CAPABILITIES_V2_OUT_TX_TSO_V2_LBN))
2405 tso_versions |= BIT(2);
2406 return tso_versions;
2407 }
2408
2409 static void efx_ef10_tx_init(struct efx_tx_queue *tx_queue)
2410 {
2411 MCDI_DECLARE_BUF(inbuf, MC_CMD_INIT_TXQ_IN_LEN(EFX_MAX_DMAQ_SIZE * 8 /
2412 EFX_BUF_SIZE));
2413 bool csum_offload = tx_queue->queue & EFX_TXQ_TYPE_OFFLOAD;
2414 size_t entries = tx_queue->txd.buf.len / EFX_BUF_SIZE;
2415 struct efx_channel *channel = tx_queue->channel;
2416 struct efx_nic *efx = tx_queue->efx;
2417 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2418 bool tso_v2 = false;
2419 size_t inlen;
2420 dma_addr_t dma_addr;
2421 efx_qword_t *txd;
2422 int rc;
2423 int i;
2424 BUILD_BUG_ON(MC_CMD_INIT_TXQ_OUT_LEN != 0);
2425
2426 /* Only attempt to enable TX timestamping if we have the license for it,
2427 * otherwise TXQ init will fail
2428 */
2429 if (!(nic_data->licensed_features &
2430 (1 << LICENSED_V3_FEATURES_TX_TIMESTAMPS_LBN))) {
2431 tx_queue->timestamping = false;
2432 /* Disable sync events on this channel. */
2433 if (efx->type->ptp_set_ts_sync_events)
2434 efx->type->ptp_set_ts_sync_events(efx, false, false);
2435 }
2436
2437 /* TSOv2 is a limited resource that can only be configured on a limited
2438 * number of queues. TSO without checksum offload is not really a thing,
2439 * so we only enable it for those queues.
2440 * TSOv2 cannot be used with Hardware timestamping.
2441 */
2442 if (csum_offload && (nic_data->datapath_caps2 &
2443 (1 << MC_CMD_GET_CAPABILITIES_V2_OUT_TX_TSO_V2_LBN)) &&
2444 !tx_queue->timestamping) {
2445 tso_v2 = true;
2446 netif_dbg(efx, hw, efx->net_dev, "Using TSOv2 for channel %u\n",
2447 channel->channel);
2448 }
2449
2450 MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_SIZE, tx_queue->ptr_mask + 1);
2451 MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_TARGET_EVQ, channel->channel);
2452 MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_LABEL, tx_queue->queue);
2453 MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_INSTANCE, tx_queue->queue);
2454 MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_OWNER_ID, 0);
2455 MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_PORT_ID, nic_data->vport_id);
2456
2457 dma_addr = tx_queue->txd.buf.dma_addr;
2458
2459 netif_dbg(efx, hw, efx->net_dev, "pushing TXQ %d. %zu entries (%llx)\n",
2460 tx_queue->queue, entries, (u64)dma_addr);
2461
2462 for (i = 0; i < entries; ++i) {
2463 MCDI_SET_ARRAY_QWORD(inbuf, INIT_TXQ_IN_DMA_ADDR, i, dma_addr);
2464 dma_addr += EFX_BUF_SIZE;
2465 }
2466
2467 inlen = MC_CMD_INIT_TXQ_IN_LEN(entries);
2468
2469 do {
2470 MCDI_POPULATE_DWORD_4(inbuf, INIT_TXQ_IN_FLAGS,
2471 /* This flag was removed from mcdi_pcol.h for
2472 * the non-_EXT version of INIT_TXQ. However,
2473 * firmware still honours it.
2474 */
2475 INIT_TXQ_EXT_IN_FLAG_TSOV2_EN, tso_v2,
2476 INIT_TXQ_IN_FLAG_IP_CSUM_DIS, !csum_offload,
2477 INIT_TXQ_IN_FLAG_TCP_CSUM_DIS, !csum_offload,
2478 INIT_TXQ_EXT_IN_FLAG_TIMESTAMP,
2479 tx_queue->timestamping);
2480
2481 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_INIT_TXQ, inbuf, inlen,
2482 NULL, 0, NULL);
2483 if (rc == -ENOSPC && tso_v2) {
2484 /* Retry without TSOv2 if we're short on contexts. */
2485 tso_v2 = false;
2486 netif_warn(efx, probe, efx->net_dev,
2487 "TSOv2 context not available to segment in hardware. TCP performance may be reduced.\n");
2488 } else if (rc) {
2489 efx_mcdi_display_error(efx, MC_CMD_INIT_TXQ,
2490 MC_CMD_INIT_TXQ_EXT_IN_LEN,
2491 NULL, 0, rc);
2492 goto fail;
2493 }
2494 } while (rc);
2495
2496 /* A previous user of this TX queue might have set us up the
2497 * bomb by writing a descriptor to the TX push collector but
2498 * not the doorbell. (Each collector belongs to a port, not a
2499 * queue or function, so cannot easily be reset.) We must
2500 * attempt to push a no-op descriptor in its place.
2501 */
2502 tx_queue->buffer[0].flags = EFX_TX_BUF_OPTION;
2503 tx_queue->insert_count = 1;
2504 txd = efx_tx_desc(tx_queue, 0);
2505 EFX_POPULATE_QWORD_5(*txd,
2506 ESF_DZ_TX_DESC_IS_OPT, true,
2507 ESF_DZ_TX_OPTION_TYPE,
2508 ESE_DZ_TX_OPTION_DESC_CRC_CSUM,
2509 ESF_DZ_TX_OPTION_UDP_TCP_CSUM, csum_offload,
2510 ESF_DZ_TX_OPTION_IP_CSUM, csum_offload,
2511 ESF_DZ_TX_TIMESTAMP, tx_queue->timestamping);
2512 tx_queue->write_count = 1;
2513
2514 if (tso_v2) {
2515 tx_queue->handle_tso = efx_ef10_tx_tso_desc;
2516 tx_queue->tso_version = 2;
2517 } else if (nic_data->datapath_caps &
2518 (1 << MC_CMD_GET_CAPABILITIES_OUT_TX_TSO_LBN)) {
2519 tx_queue->tso_version = 1;
2520 }
2521
2522 wmb();
2523 efx_ef10_push_tx_desc(tx_queue, txd);
2524
2525 return;
2526
2527 fail:
2528 netdev_WARN(efx->net_dev, "failed to initialise TXQ %d\n",
2529 tx_queue->queue);
2530 }
2531
2532 static void efx_ef10_tx_fini(struct efx_tx_queue *tx_queue)
2533 {
2534 MCDI_DECLARE_BUF(inbuf, MC_CMD_FINI_TXQ_IN_LEN);
2535 MCDI_DECLARE_BUF_ERR(outbuf);
2536 struct efx_nic *efx = tx_queue->efx;
2537 size_t outlen;
2538 int rc;
2539
2540 MCDI_SET_DWORD(inbuf, FINI_TXQ_IN_INSTANCE,
2541 tx_queue->queue);
2542
2543 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_FINI_TXQ, inbuf, sizeof(inbuf),
2544 outbuf, sizeof(outbuf), &outlen);
2545
2546 if (rc && rc != -EALREADY)
2547 goto fail;
2548
2549 return;
2550
2551 fail:
2552 efx_mcdi_display_error(efx, MC_CMD_FINI_TXQ, MC_CMD_FINI_TXQ_IN_LEN,
2553 outbuf, outlen, rc);
2554 }
2555
2556 static void efx_ef10_tx_remove(struct efx_tx_queue *tx_queue)
2557 {
2558 efx_nic_free_buffer(tx_queue->efx, &tx_queue->txd.buf);
2559 }
2560
2561 /* This writes to the TX_DESC_WPTR; write pointer for TX descriptor ring */
2562 static inline void efx_ef10_notify_tx_desc(struct efx_tx_queue *tx_queue)
2563 {
2564 unsigned int write_ptr;
2565 efx_dword_t reg;
2566
2567 write_ptr = tx_queue->write_count & tx_queue->ptr_mask;
2568 EFX_POPULATE_DWORD_1(reg, ERF_DZ_TX_DESC_WPTR_DWORD, write_ptr);
2569 efx_writed_page(tx_queue->efx, &reg,
2570 ER_DZ_TX_DESC_UPD_DWORD, tx_queue->queue);
2571 }
2572
2573 #define EFX_EF10_MAX_TX_DESCRIPTOR_LEN 0x3fff
2574
2575 static unsigned int efx_ef10_tx_limit_len(struct efx_tx_queue *tx_queue,
2576 dma_addr_t dma_addr, unsigned int len)
2577 {
2578 if (len > EFX_EF10_MAX_TX_DESCRIPTOR_LEN) {
2579 /* If we need to break across multiple descriptors we should
2580 * stop at a page boundary. This assumes the length limit is
2581 * greater than the page size.
2582 */
2583 dma_addr_t end = dma_addr + EFX_EF10_MAX_TX_DESCRIPTOR_LEN;
2584
2585 BUILD_BUG_ON(EFX_EF10_MAX_TX_DESCRIPTOR_LEN < EFX_PAGE_SIZE);
2586 len = (end & (~(EFX_PAGE_SIZE - 1))) - dma_addr;
2587 }
2588
2589 return len;
2590 }
2591
2592 static void efx_ef10_tx_write(struct efx_tx_queue *tx_queue)
2593 {
2594 unsigned int old_write_count = tx_queue->write_count;
2595 struct efx_tx_buffer *buffer;
2596 unsigned int write_ptr;
2597 efx_qword_t *txd;
2598
2599 tx_queue->xmit_more_available = false;
2600 if (unlikely(tx_queue->write_count == tx_queue->insert_count))
2601 return;
2602
2603 do {
2604 write_ptr = tx_queue->write_count & tx_queue->ptr_mask;
2605 buffer = &tx_queue->buffer[write_ptr];
2606 txd = efx_tx_desc(tx_queue, write_ptr);
2607 ++tx_queue->write_count;
2608
2609 /* Create TX descriptor ring entry */
2610 if (buffer->flags & EFX_TX_BUF_OPTION) {
2611 *txd = buffer->option;
2612 if (EFX_QWORD_FIELD(*txd, ESF_DZ_TX_OPTION_TYPE) == 1)
2613 /* PIO descriptor */
2614 tx_queue->packet_write_count = tx_queue->write_count;
2615 } else {
2616 tx_queue->packet_write_count = tx_queue->write_count;
2617 BUILD_BUG_ON(EFX_TX_BUF_CONT != 1);
2618 EFX_POPULATE_QWORD_3(
2619 *txd,
2620 ESF_DZ_TX_KER_CONT,
2621 buffer->flags & EFX_TX_BUF_CONT,
2622 ESF_DZ_TX_KER_BYTE_CNT, buffer->len,
2623 ESF_DZ_TX_KER_BUF_ADDR, buffer->dma_addr);
2624 }
2625 } while (tx_queue->write_count != tx_queue->insert_count);
2626
2627 wmb(); /* Ensure descriptors are written before they are fetched */
2628
2629 if (efx_nic_may_push_tx_desc(tx_queue, old_write_count)) {
2630 txd = efx_tx_desc(tx_queue,
2631 old_write_count & tx_queue->ptr_mask);
2632 efx_ef10_push_tx_desc(tx_queue, txd);
2633 ++tx_queue->pushes;
2634 } else {
2635 efx_ef10_notify_tx_desc(tx_queue);
2636 }
2637 }
2638
2639 #define RSS_MODE_HASH_ADDRS (1 << RSS_MODE_HASH_SRC_ADDR_LBN |\
2640 1 << RSS_MODE_HASH_DST_ADDR_LBN)
2641 #define RSS_MODE_HASH_PORTS (1 << RSS_MODE_HASH_SRC_PORT_LBN |\
2642 1 << RSS_MODE_HASH_DST_PORT_LBN)
2643 #define RSS_CONTEXT_FLAGS_DEFAULT (1 << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_TOEPLITZ_IPV4_EN_LBN |\
2644 1 << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_TOEPLITZ_TCPV4_EN_LBN |\
2645 1 << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_TOEPLITZ_IPV6_EN_LBN |\
2646 1 << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_TOEPLITZ_TCPV6_EN_LBN |\
2647 (RSS_MODE_HASH_ADDRS | RSS_MODE_HASH_PORTS) << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_TCP_IPV4_RSS_MODE_LBN |\
2648 RSS_MODE_HASH_ADDRS << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_UDP_IPV4_RSS_MODE_LBN |\
2649 RSS_MODE_HASH_ADDRS << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_OTHER_IPV4_RSS_MODE_LBN |\
2650 (RSS_MODE_HASH_ADDRS | RSS_MODE_HASH_PORTS) << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_TCP_IPV6_RSS_MODE_LBN |\
2651 RSS_MODE_HASH_ADDRS << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_UDP_IPV6_RSS_MODE_LBN |\
2652 RSS_MODE_HASH_ADDRS << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_OTHER_IPV6_RSS_MODE_LBN)
2653
2654 static int efx_ef10_get_rss_flags(struct efx_nic *efx, u32 context, u32 *flags)
2655 {
2656 /* Firmware had a bug (sfc bug 61952) where it would not actually
2657 * fill in the flags field in the response to MC_CMD_RSS_CONTEXT_GET_FLAGS.
2658 * This meant that it would always contain whatever was previously
2659 * in the MCDI buffer. Fortunately, all firmware versions with
2660 * this bug have the same default flags value for a newly-allocated
2661 * RSS context, and the only time we want to get the flags is just
2662 * after allocating. Moreover, the response has a 32-bit hole
2663 * where the context ID would be in the request, so we can use an
2664 * overlength buffer in the request and pre-fill the flags field
2665 * with what we believe the default to be. Thus if the firmware
2666 * has the bug, it will leave our pre-filled value in the flags
2667 * field of the response, and we will get the right answer.
2668 *
2669 * However, this does mean that this function should NOT be used if
2670 * the RSS context flags might not be their defaults - it is ONLY
2671 * reliably correct for a newly-allocated RSS context.
2672 */
2673 MCDI_DECLARE_BUF(inbuf, MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_LEN);
2674 MCDI_DECLARE_BUF(outbuf, MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_LEN);
2675 size_t outlen;
2676 int rc;
2677
2678 /* Check we have a hole for the context ID */
2679 BUILD_BUG_ON(MC_CMD_RSS_CONTEXT_GET_FLAGS_IN_LEN != MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_FLAGS_OFST);
2680 MCDI_SET_DWORD(inbuf, RSS_CONTEXT_GET_FLAGS_IN_RSS_CONTEXT_ID, context);
2681 MCDI_SET_DWORD(inbuf, RSS_CONTEXT_GET_FLAGS_OUT_FLAGS,
2682 RSS_CONTEXT_FLAGS_DEFAULT);
2683 rc = efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_GET_FLAGS, inbuf,
2684 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
2685 if (rc == 0) {
2686 if (outlen < MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_LEN)
2687 rc = -EIO;
2688 else
2689 *flags = MCDI_DWORD(outbuf, RSS_CONTEXT_GET_FLAGS_OUT_FLAGS);
2690 }
2691 return rc;
2692 }
2693
2694 /* Attempt to enable 4-tuple UDP hashing on the specified RSS context.
2695 * If we fail, we just leave the RSS context at its default hash settings,
2696 * which is safe but may slightly reduce performance.
2697 * Defaults are 4-tuple for TCP and 2-tuple for UDP and other-IP, so we
2698 * just need to set the UDP ports flags (for both IP versions).
2699 */
2700 static void efx_ef10_set_rss_flags(struct efx_nic *efx,
2701 struct efx_rss_context *ctx)
2702 {
2703 MCDI_DECLARE_BUF(inbuf, MC_CMD_RSS_CONTEXT_SET_FLAGS_IN_LEN);
2704 u32 flags;
2705
2706 BUILD_BUG_ON(MC_CMD_RSS_CONTEXT_SET_FLAGS_OUT_LEN != 0);
2707
2708 if (efx_ef10_get_rss_flags(efx, ctx->context_id, &flags) != 0)
2709 return;
2710 MCDI_SET_DWORD(inbuf, RSS_CONTEXT_SET_FLAGS_IN_RSS_CONTEXT_ID,
2711 ctx->context_id);
2712 flags |= RSS_MODE_HASH_PORTS << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_UDP_IPV4_RSS_MODE_LBN;
2713 flags |= RSS_MODE_HASH_PORTS << MC_CMD_RSS_CONTEXT_GET_FLAGS_OUT_UDP_IPV6_RSS_MODE_LBN;
2714 MCDI_SET_DWORD(inbuf, RSS_CONTEXT_SET_FLAGS_IN_FLAGS, flags);
2715 if (!efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_SET_FLAGS, inbuf, sizeof(inbuf),
2716 NULL, 0, NULL))
2717 /* Succeeded, so UDP 4-tuple is now enabled */
2718 ctx->rx_hash_udp_4tuple = true;
2719 }
2720
2721 static int efx_ef10_alloc_rss_context(struct efx_nic *efx, bool exclusive,
2722 struct efx_rss_context *ctx,
2723 unsigned *context_size)
2724 {
2725 MCDI_DECLARE_BUF(inbuf, MC_CMD_RSS_CONTEXT_ALLOC_IN_LEN);
2726 MCDI_DECLARE_BUF(outbuf, MC_CMD_RSS_CONTEXT_ALLOC_OUT_LEN);
2727 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2728 size_t outlen;
2729 int rc;
2730 u32 alloc_type = exclusive ?
2731 MC_CMD_RSS_CONTEXT_ALLOC_IN_TYPE_EXCLUSIVE :
2732 MC_CMD_RSS_CONTEXT_ALLOC_IN_TYPE_SHARED;
2733 unsigned rss_spread = exclusive ?
2734 efx->rss_spread :
2735 min(rounddown_pow_of_two(efx->rss_spread),
2736 EFX_EF10_MAX_SHARED_RSS_CONTEXT_SIZE);
2737
2738 if (!exclusive && rss_spread == 1) {
2739 ctx->context_id = EFX_EF10_RSS_CONTEXT_INVALID;
2740 if (context_size)
2741 *context_size = 1;
2742 return 0;
2743 }
2744
2745 if (nic_data->datapath_caps &
2746 1 << MC_CMD_GET_CAPABILITIES_OUT_RX_RSS_LIMITED_LBN)
2747 return -EOPNOTSUPP;
2748
2749 MCDI_SET_DWORD(inbuf, RSS_CONTEXT_ALLOC_IN_UPSTREAM_PORT_ID,
2750 nic_data->vport_id);
2751 MCDI_SET_DWORD(inbuf, RSS_CONTEXT_ALLOC_IN_TYPE, alloc_type);
2752 MCDI_SET_DWORD(inbuf, RSS_CONTEXT_ALLOC_IN_NUM_QUEUES, rss_spread);
2753
2754 rc = efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_ALLOC, inbuf, sizeof(inbuf),
2755 outbuf, sizeof(outbuf), &outlen);
2756 if (rc != 0)
2757 return rc;
2758
2759 if (outlen < MC_CMD_RSS_CONTEXT_ALLOC_OUT_LEN)
2760 return -EIO;
2761
2762 ctx->context_id = MCDI_DWORD(outbuf, RSS_CONTEXT_ALLOC_OUT_RSS_CONTEXT_ID);
2763
2764 if (context_size)
2765 *context_size = rss_spread;
2766
2767 if (nic_data->datapath_caps &
2768 1 << MC_CMD_GET_CAPABILITIES_OUT_ADDITIONAL_RSS_MODES_LBN)
2769 efx_ef10_set_rss_flags(efx, ctx);
2770
2771 return 0;
2772 }
2773
2774 static int efx_ef10_free_rss_context(struct efx_nic *efx, u32 context)
2775 {
2776 MCDI_DECLARE_BUF(inbuf, MC_CMD_RSS_CONTEXT_FREE_IN_LEN);
2777
2778 MCDI_SET_DWORD(inbuf, RSS_CONTEXT_FREE_IN_RSS_CONTEXT_ID,
2779 context);
2780 return efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_FREE, inbuf, sizeof(inbuf),
2781 NULL, 0, NULL);
2782 }
2783
2784 static int efx_ef10_populate_rss_table(struct efx_nic *efx, u32 context,
2785 const u32 *rx_indir_table, const u8 *key)
2786 {
2787 MCDI_DECLARE_BUF(tablebuf, MC_CMD_RSS_CONTEXT_SET_TABLE_IN_LEN);
2788 MCDI_DECLARE_BUF(keybuf, MC_CMD_RSS_CONTEXT_SET_KEY_IN_LEN);
2789 int i, rc;
2790
2791 MCDI_SET_DWORD(tablebuf, RSS_CONTEXT_SET_TABLE_IN_RSS_CONTEXT_ID,
2792 context);
2793 BUILD_BUG_ON(ARRAY_SIZE(efx->rss_context.rx_indir_table) !=
2794 MC_CMD_RSS_CONTEXT_SET_TABLE_IN_INDIRECTION_TABLE_LEN);
2795
2796 /* This iterates over the length of efx->rss_context.rx_indir_table, but
2797 * copies bytes from rx_indir_table. That's because the latter is a
2798 * pointer rather than an array, but should have the same length.
2799 * The efx->rss_context.rx_hash_key loop below is similar.
2800 */
2801 for (i = 0; i < ARRAY_SIZE(efx->rss_context.rx_indir_table); ++i)
2802 MCDI_PTR(tablebuf,
2803 RSS_CONTEXT_SET_TABLE_IN_INDIRECTION_TABLE)[i] =
2804 (u8) rx_indir_table[i];
2805
2806 rc = efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_SET_TABLE, tablebuf,
2807 sizeof(tablebuf), NULL, 0, NULL);
2808 if (rc != 0)
2809 return rc;
2810
2811 MCDI_SET_DWORD(keybuf, RSS_CONTEXT_SET_KEY_IN_RSS_CONTEXT_ID,
2812 context);
2813 BUILD_BUG_ON(ARRAY_SIZE(efx->rss_context.rx_hash_key) !=
2814 MC_CMD_RSS_CONTEXT_SET_KEY_IN_TOEPLITZ_KEY_LEN);
2815 for (i = 0; i < ARRAY_SIZE(efx->rss_context.rx_hash_key); ++i)
2816 MCDI_PTR(keybuf, RSS_CONTEXT_SET_KEY_IN_TOEPLITZ_KEY)[i] = key[i];
2817
2818 return efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_SET_KEY, keybuf,
2819 sizeof(keybuf), NULL, 0, NULL);
2820 }
2821
2822 static void efx_ef10_rx_free_indir_table(struct efx_nic *efx)
2823 {
2824 int rc;
2825
2826 if (efx->rss_context.context_id != EFX_EF10_RSS_CONTEXT_INVALID) {
2827 rc = efx_ef10_free_rss_context(efx, efx->rss_context.context_id);
2828 WARN_ON(rc != 0);
2829 }
2830 efx->rss_context.context_id = EFX_EF10_RSS_CONTEXT_INVALID;
2831 }
2832
2833 static int efx_ef10_rx_push_shared_rss_config(struct efx_nic *efx,
2834 unsigned *context_size)
2835 {
2836 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2837 int rc = efx_ef10_alloc_rss_context(efx, false, &efx->rss_context,
2838 context_size);
2839
2840 if (rc != 0)
2841 return rc;
2842
2843 nic_data->rx_rss_context_exclusive = false;
2844 efx_set_default_rx_indir_table(efx, &efx->rss_context);
2845 return 0;
2846 }
2847
2848 static int efx_ef10_rx_push_exclusive_rss_config(struct efx_nic *efx,
2849 const u32 *rx_indir_table,
2850 const u8 *key)
2851 {
2852 u32 old_rx_rss_context = efx->rss_context.context_id;
2853 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2854 int rc;
2855
2856 if (efx->rss_context.context_id == EFX_EF10_RSS_CONTEXT_INVALID ||
2857 !nic_data->rx_rss_context_exclusive) {
2858 rc = efx_ef10_alloc_rss_context(efx, true, &efx->rss_context,
2859 NULL);
2860 if (rc == -EOPNOTSUPP)
2861 return rc;
2862 else if (rc != 0)
2863 goto fail1;
2864 }
2865
2866 rc = efx_ef10_populate_rss_table(efx, efx->rss_context.context_id,
2867 rx_indir_table, key);
2868 if (rc != 0)
2869 goto fail2;
2870
2871 if (efx->rss_context.context_id != old_rx_rss_context &&
2872 old_rx_rss_context != EFX_EF10_RSS_CONTEXT_INVALID)
2873 WARN_ON(efx_ef10_free_rss_context(efx, old_rx_rss_context) != 0);
2874 nic_data->rx_rss_context_exclusive = true;
2875 if (rx_indir_table != efx->rss_context.rx_indir_table)
2876 memcpy(efx->rss_context.rx_indir_table, rx_indir_table,
2877 sizeof(efx->rss_context.rx_indir_table));
2878 if (key != efx->rss_context.rx_hash_key)
2879 memcpy(efx->rss_context.rx_hash_key, key,
2880 efx->type->rx_hash_key_size);
2881
2882 return 0;
2883
2884 fail2:
2885 if (old_rx_rss_context != efx->rss_context.context_id) {
2886 WARN_ON(efx_ef10_free_rss_context(efx, efx->rss_context.context_id) != 0);
2887 efx->rss_context.context_id = old_rx_rss_context;
2888 }
2889 fail1:
2890 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
2891 return rc;
2892 }
2893
2894 static int efx_ef10_rx_push_rss_context_config(struct efx_nic *efx,
2895 struct efx_rss_context *ctx,
2896 const u32 *rx_indir_table,
2897 const u8 *key)
2898 {
2899 int rc;
2900
2901 WARN_ON(!mutex_is_locked(&efx->rss_lock));
2902
2903 if (ctx->context_id == EFX_EF10_RSS_CONTEXT_INVALID) {
2904 rc = efx_ef10_alloc_rss_context(efx, true, ctx, NULL);
2905 if (rc)
2906 return rc;
2907 }
2908
2909 if (!rx_indir_table) /* Delete this context */
2910 return efx_ef10_free_rss_context(efx, ctx->context_id);
2911
2912 rc = efx_ef10_populate_rss_table(efx, ctx->context_id,
2913 rx_indir_table, key);
2914 if (rc)
2915 return rc;
2916
2917 memcpy(ctx->rx_indir_table, rx_indir_table,
2918 sizeof(efx->rss_context.rx_indir_table));
2919 memcpy(ctx->rx_hash_key, key, efx->type->rx_hash_key_size);
2920
2921 return 0;
2922 }
2923
2924 static int efx_ef10_rx_pull_rss_context_config(struct efx_nic *efx,
2925 struct efx_rss_context *ctx)
2926 {
2927 MCDI_DECLARE_BUF(inbuf, MC_CMD_RSS_CONTEXT_GET_TABLE_IN_LEN);
2928 MCDI_DECLARE_BUF(tablebuf, MC_CMD_RSS_CONTEXT_GET_TABLE_OUT_LEN);
2929 MCDI_DECLARE_BUF(keybuf, MC_CMD_RSS_CONTEXT_GET_KEY_OUT_LEN);
2930 size_t outlen;
2931 int rc, i;
2932
2933 WARN_ON(!mutex_is_locked(&efx->rss_lock));
2934
2935 BUILD_BUG_ON(MC_CMD_RSS_CONTEXT_GET_TABLE_IN_LEN !=
2936 MC_CMD_RSS_CONTEXT_GET_KEY_IN_LEN);
2937
2938 if (ctx->context_id == EFX_EF10_RSS_CONTEXT_INVALID)
2939 return -ENOENT;
2940
2941 MCDI_SET_DWORD(inbuf, RSS_CONTEXT_GET_TABLE_IN_RSS_CONTEXT_ID,
2942 ctx->context_id);
2943 BUILD_BUG_ON(ARRAY_SIZE(ctx->rx_indir_table) !=
2944 MC_CMD_RSS_CONTEXT_GET_TABLE_OUT_INDIRECTION_TABLE_LEN);
2945 rc = efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_GET_TABLE, inbuf, sizeof(inbuf),
2946 tablebuf, sizeof(tablebuf), &outlen);
2947 if (rc != 0)
2948 return rc;
2949
2950 if (WARN_ON(outlen != MC_CMD_RSS_CONTEXT_GET_TABLE_OUT_LEN))
2951 return -EIO;
2952
2953 for (i = 0; i < ARRAY_SIZE(ctx->rx_indir_table); i++)
2954 ctx->rx_indir_table[i] = MCDI_PTR(tablebuf,
2955 RSS_CONTEXT_GET_TABLE_OUT_INDIRECTION_TABLE)[i];
2956
2957 MCDI_SET_DWORD(inbuf, RSS_CONTEXT_GET_KEY_IN_RSS_CONTEXT_ID,
2958 ctx->context_id);
2959 BUILD_BUG_ON(ARRAY_SIZE(ctx->rx_hash_key) !=
2960 MC_CMD_RSS_CONTEXT_SET_KEY_IN_TOEPLITZ_KEY_LEN);
2961 rc = efx_mcdi_rpc(efx, MC_CMD_RSS_CONTEXT_GET_KEY, inbuf, sizeof(inbuf),
2962 keybuf, sizeof(keybuf), &outlen);
2963 if (rc != 0)
2964 return rc;
2965
2966 if (WARN_ON(outlen != MC_CMD_RSS_CONTEXT_GET_KEY_OUT_LEN))
2967 return -EIO;
2968
2969 for (i = 0; i < ARRAY_SIZE(ctx->rx_hash_key); ++i)
2970 ctx->rx_hash_key[i] = MCDI_PTR(
2971 keybuf, RSS_CONTEXT_GET_KEY_OUT_TOEPLITZ_KEY)[i];
2972
2973 return 0;
2974 }
2975
2976 static int efx_ef10_rx_pull_rss_config(struct efx_nic *efx)
2977 {
2978 int rc;
2979
2980 mutex_lock(&efx->rss_lock);
2981 rc = efx_ef10_rx_pull_rss_context_config(efx, &efx->rss_context);
2982 mutex_unlock(&efx->rss_lock);
2983 return rc;
2984 }
2985
2986 static void efx_ef10_rx_restore_rss_contexts(struct efx_nic *efx)
2987 {
2988 struct efx_ef10_nic_data *nic_data = efx->nic_data;
2989 struct efx_rss_context *ctx;
2990 int rc;
2991
2992 WARN_ON(!mutex_is_locked(&efx->rss_lock));
2993
2994 if (!nic_data->must_restore_rss_contexts)
2995 return;
2996
2997 list_for_each_entry(ctx, &efx->rss_context.list, list) {
2998 /* previous NIC RSS context is gone */
2999 ctx->context_id = EFX_EF10_RSS_CONTEXT_INVALID;
3000 /* so try to allocate a new one */
3001 rc = efx_ef10_rx_push_rss_context_config(efx, ctx,
3002 ctx->rx_indir_table,
3003 ctx->rx_hash_key);
3004 if (rc)
3005 netif_warn(efx, probe, efx->net_dev,
3006 "failed to restore RSS context %u, rc=%d"
3007 "; RSS filters may fail to be applied\n",
3008 ctx->user_id, rc);
3009 }
3010 nic_data->must_restore_rss_contexts = false;
3011 }
3012
3013 static int efx_ef10_pf_rx_push_rss_config(struct efx_nic *efx, bool user,
3014 const u32 *rx_indir_table,
3015 const u8 *key)
3016 {
3017 int rc;
3018
3019 if (efx->rss_spread == 1)
3020 return 0;
3021
3022 if (!key)
3023 key = efx->rss_context.rx_hash_key;
3024
3025 rc = efx_ef10_rx_push_exclusive_rss_config(efx, rx_indir_table, key);
3026
3027 if (rc == -ENOBUFS && !user) {
3028 unsigned context_size;
3029 bool mismatch = false;
3030 size_t i;
3031
3032 for (i = 0;
3033 i < ARRAY_SIZE(efx->rss_context.rx_indir_table) && !mismatch;
3034 i++)
3035 mismatch = rx_indir_table[i] !=
3036 ethtool_rxfh_indir_default(i, efx->rss_spread);
3037
3038 rc = efx_ef10_rx_push_shared_rss_config(efx, &context_size);
3039 if (rc == 0) {
3040 if (context_size != efx->rss_spread)
3041 netif_warn(efx, probe, efx->net_dev,
3042 "Could not allocate an exclusive RSS"
3043 " context; allocated a shared one of"
3044 " different size."
3045 " Wanted %u, got %u.\n",
3046 efx->rss_spread, context_size);
3047 else if (mismatch)
3048 netif_warn(efx, probe, efx->net_dev,
3049 "Could not allocate an exclusive RSS"
3050 " context; allocated a shared one but"
3051 " could not apply custom"
3052 " indirection.\n");
3053 else
3054 netif_info(efx, probe, efx->net_dev,
3055 "Could not allocate an exclusive RSS"
3056 " context; allocated a shared one.\n");
3057 }
3058 }
3059 return rc;
3060 }
3061
3062 static int efx_ef10_vf_rx_push_rss_config(struct efx_nic *efx, bool user,
3063 const u32 *rx_indir_table
3064 __attribute__ ((unused)),
3065 const u8 *key
3066 __attribute__ ((unused)))
3067 {
3068 if (user)
3069 return -EOPNOTSUPP;
3070 if (efx->rss_context.context_id != EFX_EF10_RSS_CONTEXT_INVALID)
3071 return 0;
3072 return efx_ef10_rx_push_shared_rss_config(efx, NULL);
3073 }
3074
3075 static int efx_ef10_rx_probe(struct efx_rx_queue *rx_queue)
3076 {
3077 return efx_nic_alloc_buffer(rx_queue->efx, &rx_queue->rxd.buf,
3078 (rx_queue->ptr_mask + 1) *
3079 sizeof(efx_qword_t),
3080 GFP_KERNEL);
3081 }
3082
3083 static void efx_ef10_rx_init(struct efx_rx_queue *rx_queue)
3084 {
3085 MCDI_DECLARE_BUF(inbuf,
3086 MC_CMD_INIT_RXQ_IN_LEN(EFX_MAX_DMAQ_SIZE * 8 /
3087 EFX_BUF_SIZE));
3088 struct efx_channel *channel = efx_rx_queue_channel(rx_queue);
3089 size_t entries = rx_queue->rxd.buf.len / EFX_BUF_SIZE;
3090 struct efx_nic *efx = rx_queue->efx;
3091 struct efx_ef10_nic_data *nic_data = efx->nic_data;
3092 size_t inlen;
3093 dma_addr_t dma_addr;
3094 int rc;
3095 int i;
3096 BUILD_BUG_ON(MC_CMD_INIT_RXQ_OUT_LEN != 0);
3097
3098 rx_queue->scatter_n = 0;
3099 rx_queue->scatter_len = 0;
3100
3101 MCDI_SET_DWORD(inbuf, INIT_RXQ_IN_SIZE, rx_queue->ptr_mask + 1);
3102 MCDI_SET_DWORD(inbuf, INIT_RXQ_IN_TARGET_EVQ, channel->channel);
3103 MCDI_SET_DWORD(inbuf, INIT_RXQ_IN_LABEL, efx_rx_queue_index(rx_queue));
3104 MCDI_SET_DWORD(inbuf, INIT_RXQ_IN_INSTANCE,
3105 efx_rx_queue_index(rx_queue));
3106 MCDI_POPULATE_DWORD_2(inbuf, INIT_RXQ_IN_FLAGS,
3107 INIT_RXQ_IN_FLAG_PREFIX, 1,
3108 INIT_RXQ_IN_FLAG_TIMESTAMP, 1);
3109 MCDI_SET_DWORD(inbuf, INIT_RXQ_IN_OWNER_ID, 0);
3110 MCDI_SET_DWORD(inbuf, INIT_RXQ_IN_PORT_ID, nic_data->vport_id);
3111
3112 dma_addr = rx_queue->rxd.buf.dma_addr;
3113
3114 netif_dbg(efx, hw, efx->net_dev, "pushing RXQ %d. %zu entries (%llx)\n",
3115 efx_rx_queue_index(rx_queue), entries, (u64)dma_addr);
3116
3117 for (i = 0; i < entries; ++i) {
3118 MCDI_SET_ARRAY_QWORD(inbuf, INIT_RXQ_IN_DMA_ADDR, i, dma_addr);
3119 dma_addr += EFX_BUF_SIZE;
3120 }
3121
3122 inlen = MC_CMD_INIT_RXQ_IN_LEN(entries);
3123
3124 rc = efx_mcdi_rpc(efx, MC_CMD_INIT_RXQ, inbuf, inlen,
3125 NULL, 0, NULL);
3126 if (rc)
3127 netdev_WARN(efx->net_dev, "failed to initialise RXQ %d\n",
3128 efx_rx_queue_index(rx_queue));
3129 }
3130
3131 static void efx_ef10_rx_fini(struct efx_rx_queue *rx_queue)
3132 {
3133 MCDI_DECLARE_BUF(inbuf, MC_CMD_FINI_RXQ_IN_LEN);
3134 MCDI_DECLARE_BUF_ERR(outbuf);
3135 struct efx_nic *efx = rx_queue->efx;
3136 size_t outlen;
3137 int rc;
3138
3139 MCDI_SET_DWORD(inbuf, FINI_RXQ_IN_INSTANCE,
3140 efx_rx_queue_index(rx_queue));
3141
3142 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_FINI_RXQ, inbuf, sizeof(inbuf),
3143 outbuf, sizeof(outbuf), &outlen);
3144
3145 if (rc && rc != -EALREADY)
3146 goto fail;
3147
3148 return;
3149
3150 fail:
3151 efx_mcdi_display_error(efx, MC_CMD_FINI_RXQ, MC_CMD_FINI_RXQ_IN_LEN,
3152 outbuf, outlen, rc);
3153 }
3154
3155 static void efx_ef10_rx_remove(struct efx_rx_queue *rx_queue)
3156 {
3157 efx_nic_free_buffer(rx_queue->efx, &rx_queue->rxd.buf);
3158 }
3159
3160 /* This creates an entry in the RX descriptor queue */
3161 static inline void
3162 efx_ef10_build_rx_desc(struct efx_rx_queue *rx_queue, unsigned int index)
3163 {
3164 struct efx_rx_buffer *rx_buf;
3165 efx_qword_t *rxd;
3166
3167 rxd = efx_rx_desc(rx_queue, index);
3168 rx_buf = efx_rx_buffer(rx_queue, index);
3169 EFX_POPULATE_QWORD_2(*rxd,
3170 ESF_DZ_RX_KER_BYTE_CNT, rx_buf->len,
3171 ESF_DZ_RX_KER_BUF_ADDR, rx_buf->dma_addr);
3172 }
3173
3174 static void efx_ef10_rx_write(struct efx_rx_queue *rx_queue)
3175 {
3176 struct efx_nic *efx = rx_queue->efx;
3177 unsigned int write_count;
3178 efx_dword_t reg;
3179
3180 /* Firmware requires that RX_DESC_WPTR be a multiple of 8 */
3181 write_count = rx_queue->added_count & ~7;
3182 if (rx_queue->notified_count == write_count)
3183 return;
3184
3185 do
3186 efx_ef10_build_rx_desc(
3187 rx_queue,
3188 rx_queue->notified_count & rx_queue->ptr_mask);
3189 while (++rx_queue->notified_count != write_count);
3190
3191 wmb();
3192 EFX_POPULATE_DWORD_1(reg, ERF_DZ_RX_DESC_WPTR,
3193 write_count & rx_queue->ptr_mask);
3194 efx_writed_page(efx, &reg, ER_DZ_RX_DESC_UPD,
3195 efx_rx_queue_index(rx_queue));
3196 }
3197
3198 static efx_mcdi_async_completer efx_ef10_rx_defer_refill_complete;
3199
3200 static void efx_ef10_rx_defer_refill(struct efx_rx_queue *rx_queue)
3201 {
3202 struct efx_channel *channel = efx_rx_queue_channel(rx_queue);
3203 MCDI_DECLARE_BUF(inbuf, MC_CMD_DRIVER_EVENT_IN_LEN);
3204 efx_qword_t event;
3205
3206 EFX_POPULATE_QWORD_2(event,
3207 ESF_DZ_EV_CODE, EFX_EF10_DRVGEN_EV,
3208 ESF_DZ_EV_DATA, EFX_EF10_REFILL);
3209
3210 MCDI_SET_DWORD(inbuf, DRIVER_EVENT_IN_EVQ, channel->channel);
3211
3212 /* MCDI_SET_QWORD is not appropriate here since EFX_POPULATE_* has
3213 * already swapped the data to little-endian order.
3214 */
3215 memcpy(MCDI_PTR(inbuf, DRIVER_EVENT_IN_DATA), &event.u64[0],
3216 sizeof(efx_qword_t));
3217
3218 efx_mcdi_rpc_async(channel->efx, MC_CMD_DRIVER_EVENT,
3219 inbuf, sizeof(inbuf), 0,
3220 efx_ef10_rx_defer_refill_complete, 0);
3221 }
3222
3223 static void
3224 efx_ef10_rx_defer_refill_complete(struct efx_nic *efx, unsigned long cookie,
3225 int rc, efx_dword_t *outbuf,
3226 size_t outlen_actual)
3227 {
3228 /* nothing to do */
3229 }
3230
3231 static int efx_ef10_ev_probe(struct efx_channel *channel)
3232 {
3233 return efx_nic_alloc_buffer(channel->efx, &channel->eventq.buf,
3234 (channel->eventq_mask + 1) *
3235 sizeof(efx_qword_t),
3236 GFP_KERNEL);
3237 }
3238
3239 static void efx_ef10_ev_fini(struct efx_channel *channel)
3240 {
3241 MCDI_DECLARE_BUF(inbuf, MC_CMD_FINI_EVQ_IN_LEN);
3242 MCDI_DECLARE_BUF_ERR(outbuf);
3243 struct efx_nic *efx = channel->efx;
3244 size_t outlen;
3245 int rc;
3246
3247 MCDI_SET_DWORD(inbuf, FINI_EVQ_IN_INSTANCE, channel->channel);
3248
3249 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_FINI_EVQ, inbuf, sizeof(inbuf),
3250 outbuf, sizeof(outbuf), &outlen);
3251
3252 if (rc && rc != -EALREADY)
3253 goto fail;
3254
3255 return;
3256
3257 fail:
3258 efx_mcdi_display_error(efx, MC_CMD_FINI_EVQ, MC_CMD_FINI_EVQ_IN_LEN,
3259 outbuf, outlen, rc);
3260 }
3261
3262 static int efx_ef10_ev_init(struct efx_channel *channel)
3263 {
3264 MCDI_DECLARE_BUF(inbuf,
3265 MC_CMD_INIT_EVQ_V2_IN_LEN(EFX_MAX_EVQ_SIZE * 8 /
3266 EFX_BUF_SIZE));
3267 MCDI_DECLARE_BUF(outbuf, MC_CMD_INIT_EVQ_V2_OUT_LEN);
3268 size_t entries = channel->eventq.buf.len / EFX_BUF_SIZE;
3269 struct efx_nic *efx = channel->efx;
3270 struct efx_ef10_nic_data *nic_data;
3271 size_t inlen, outlen;
3272 unsigned int enabled, implemented;
3273 dma_addr_t dma_addr;
3274 int rc;
3275 int i;
3276
3277 nic_data = efx->nic_data;
3278
3279 /* Fill event queue with all ones (i.e. empty events) */
3280 memset(channel->eventq.buf.addr, 0xff, channel->eventq.buf.len);
3281
3282 MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_SIZE, channel->eventq_mask + 1);
3283 MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_INSTANCE, channel->channel);
3284 /* INIT_EVQ expects index in vector table, not absolute */
3285 MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_IRQ_NUM, channel->channel);
3286 MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_TMR_MODE,
3287 MC_CMD_INIT_EVQ_IN_TMR_MODE_DIS);
3288 MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_TMR_LOAD, 0);
3289 MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_TMR_RELOAD, 0);
3290 MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_COUNT_MODE,
3291 MC_CMD_INIT_EVQ_IN_COUNT_MODE_DIS);
3292 MCDI_SET_DWORD(inbuf, INIT_EVQ_IN_COUNT_THRSHLD, 0);
3293
3294 if (nic_data->datapath_caps2 &
3295 1 << MC_CMD_GET_CAPABILITIES_V2_OUT_INIT_EVQ_V2_LBN) {
3296 /* Use the new generic approach to specifying event queue
3297 * configuration, requesting lower latency or higher throughput.
3298 * The options that actually get used appear in the output.
3299 */
3300 MCDI_POPULATE_DWORD_2(inbuf, INIT_EVQ_V2_IN_FLAGS,
3301 INIT_EVQ_V2_IN_FLAG_INTERRUPTING, 1,
3302 INIT_EVQ_V2_IN_FLAG_TYPE,
3303 MC_CMD_INIT_EVQ_V2_IN_FLAG_TYPE_AUTO);
3304 } else {
3305 bool cut_thru = !(nic_data->datapath_caps &
3306 1 << MC_CMD_GET_CAPABILITIES_OUT_RX_BATCHING_LBN);
3307
3308 MCDI_POPULATE_DWORD_4(inbuf, INIT_EVQ_IN_FLAGS,
3309 INIT_EVQ_IN_FLAG_INTERRUPTING, 1,
3310 INIT_EVQ_IN_FLAG_RX_MERGE, 1,
3311 INIT_EVQ_IN_FLAG_TX_MERGE, 1,
3312 INIT_EVQ_IN_FLAG_CUT_THRU, cut_thru);
3313 }
3314
3315 dma_addr = channel->eventq.buf.dma_addr;
3316 for (i = 0; i < entries; ++i) {
3317 MCDI_SET_ARRAY_QWORD(inbuf, INIT_EVQ_IN_DMA_ADDR, i, dma_addr);
3318 dma_addr += EFX_BUF_SIZE;
3319 }
3320
3321 inlen = MC_CMD_INIT_EVQ_IN_LEN(entries);
3322
3323 rc = efx_mcdi_rpc(efx, MC_CMD_INIT_EVQ, inbuf, inlen,
3324 outbuf, sizeof(outbuf), &outlen);
3325
3326 if (outlen >= MC_CMD_INIT_EVQ_V2_OUT_LEN)
3327 netif_dbg(efx, drv, efx->net_dev,
3328 "Channel %d using event queue flags %08x\n",
3329 channel->channel,
3330 MCDI_DWORD(outbuf, INIT_EVQ_V2_OUT_FLAGS));
3331
3332 /* IRQ return is ignored */
3333 if (channel->channel || rc)
3334 return rc;
3335
3336 /* Successfully created event queue on channel 0 */
3337 rc = efx_mcdi_get_workarounds(efx, &implemented, &enabled);
3338 if (rc == -ENOSYS) {
3339 /* GET_WORKAROUNDS was implemented before this workaround,
3340 * thus it must be unavailable in this firmware.
3341 */
3342 nic_data->workaround_26807 = false;
3343 rc = 0;
3344 } else if (rc) {
3345 goto fail;
3346 } else {
3347 nic_data->workaround_26807 =
3348 !!(enabled & MC_CMD_GET_WORKAROUNDS_OUT_BUG26807);
3349
3350 if (implemented & MC_CMD_GET_WORKAROUNDS_OUT_BUG26807 &&
3351 !nic_data->workaround_26807) {
3352 unsigned int flags;
3353
3354 rc = efx_mcdi_set_workaround(efx,
3355 MC_CMD_WORKAROUND_BUG26807,
3356 true, &flags);
3357
3358 if (!rc) {
3359 if (flags &
3360 1 << MC_CMD_WORKAROUND_EXT_OUT_FLR_DONE_LBN) {
3361 netif_info(efx, drv, efx->net_dev,
3362 "other functions on NIC have been reset\n");
3363
3364 /* With MCFW v4.6.x and earlier, the
3365 * boot count will have incremented,
3366 * so re-read the warm_boot_count
3367 * value now to ensure this function
3368 * doesn't think it has changed next
3369 * time it checks.
3370 */
3371 rc = efx_ef10_get_warm_boot_count(efx);
3372 if (rc >= 0) {
3373 nic_data->warm_boot_count = rc;
3374 rc = 0;
3375 }
3376 }
3377 nic_data->workaround_26807 = true;
3378 } else if (rc == -EPERM) {
3379 rc = 0;
3380 }
3381 }
3382 }
3383
3384 if (!rc)
3385 return 0;
3386
3387 fail:
3388 efx_ef10_ev_fini(channel);
3389 return rc;
3390 }
3391
3392 static void efx_ef10_ev_remove(struct efx_channel *channel)
3393 {
3394 efx_nic_free_buffer(channel->efx, &channel->eventq.buf);
3395 }
3396
3397 static void efx_ef10_handle_rx_wrong_queue(struct efx_rx_queue *rx_queue,
3398 unsigned int rx_queue_label)
3399 {
3400 struct efx_nic *efx = rx_queue->efx;
3401
3402 netif_info(efx, hw, efx->net_dev,
3403 "rx event arrived on queue %d labeled as queue %u\n",
3404 efx_rx_queue_index(rx_queue), rx_queue_label);
3405
3406 efx_schedule_reset(efx, RESET_TYPE_DISABLE);
3407 }
3408
3409 static void
3410 efx_ef10_handle_rx_bad_lbits(struct efx_rx_queue *rx_queue,
3411 unsigned int actual, unsigned int expected)
3412 {
3413 unsigned int dropped = (actual - expected) & rx_queue->ptr_mask;
3414 struct efx_nic *efx = rx_queue->efx;
3415
3416 netif_info(efx, hw, efx->net_dev,
3417 "dropped %d events (index=%d expected=%d)\n",
3418 dropped, actual, expected);
3419
3420 efx_schedule_reset(efx, RESET_TYPE_DISABLE);
3421 }
3422
3423 /* partially received RX was aborted. clean up. */
3424 static void efx_ef10_handle_rx_abort(struct efx_rx_queue *rx_queue)
3425 {
3426 unsigned int rx_desc_ptr;
3427
3428 netif_dbg(rx_queue->efx, hw, rx_queue->efx->net_dev,
3429 "scattered RX aborted (dropping %u buffers)\n",
3430 rx_queue->scatter_n);
3431
3432 rx_desc_ptr = rx_queue->removed_count & rx_queue->ptr_mask;
3433
3434 efx_rx_packet(rx_queue, rx_desc_ptr, rx_queue->scatter_n,
3435 0, EFX_RX_PKT_DISCARD);
3436
3437 rx_queue->removed_count += rx_queue->scatter_n;
3438 rx_queue->scatter_n = 0;
3439 rx_queue->scatter_len = 0;
3440 ++efx_rx_queue_channel(rx_queue)->n_rx_nodesc_trunc;
3441 }
3442
3443 static u16 efx_ef10_handle_rx_event_errors(struct efx_channel *channel,
3444 unsigned int n_packets,
3445 unsigned int rx_encap_hdr,
3446 unsigned int rx_l3_class,
3447 unsigned int rx_l4_class,
3448 const efx_qword_t *event)
3449 {
3450 struct efx_nic *efx = channel->efx;
3451 bool handled = false;
3452
3453 if (EFX_QWORD_FIELD(*event, ESF_DZ_RX_ECRC_ERR)) {
3454 if (!(efx->net_dev->features & NETIF_F_RXALL)) {
3455 if (!efx->loopback_selftest)
3456 channel->n_rx_eth_crc_err += n_packets;
3457 return EFX_RX_PKT_DISCARD;
3458 }
3459 handled = true;
3460 }
3461 if (EFX_QWORD_FIELD(*event, ESF_DZ_RX_IPCKSUM_ERR)) {
3462 if (unlikely(rx_encap_hdr != ESE_EZ_ENCAP_HDR_VXLAN &&
3463 rx_l3_class != ESE_DZ_L3_CLASS_IP4 &&
3464 rx_l3_class != ESE_DZ_L3_CLASS_IP4_FRAG &&
3465 rx_l3_class != ESE_DZ_L3_CLASS_IP6 &&
3466 rx_l3_class != ESE_DZ_L3_CLASS_IP6_FRAG))
3467 netdev_WARN(efx->net_dev,
3468 "invalid class for RX_IPCKSUM_ERR: event="
3469 EFX_QWORD_FMT "\n",
3470 EFX_QWORD_VAL(*event));
3471 if (!efx->loopback_selftest)
3472 *(rx_encap_hdr ?
3473 &channel->n_rx_outer_ip_hdr_chksum_err :
3474 &channel->n_rx_ip_hdr_chksum_err) += n_packets;
3475 return 0;
3476 }
3477 if (EFX_QWORD_FIELD(*event, ESF_DZ_RX_TCPUDP_CKSUM_ERR)) {
3478 if (unlikely(rx_encap_hdr != ESE_EZ_ENCAP_HDR_VXLAN &&
3479 ((rx_l3_class != ESE_DZ_L3_CLASS_IP4 &&
3480 rx_l3_class != ESE_DZ_L3_CLASS_IP6) ||
3481 (rx_l4_class != ESE_FZ_L4_CLASS_TCP &&
3482 rx_l4_class != ESE_FZ_L4_CLASS_UDP))))
3483 netdev_WARN(efx->net_dev,
3484 "invalid class for RX_TCPUDP_CKSUM_ERR: event="
3485 EFX_QWORD_FMT "\n",
3486 EFX_QWORD_VAL(*event));
3487 if (!efx->loopback_selftest)
3488 *(rx_encap_hdr ?
3489 &channel->n_rx_outer_tcp_udp_chksum_err :
3490 &channel->n_rx_tcp_udp_chksum_err) += n_packets;
3491 return 0;
3492 }
3493 if (EFX_QWORD_FIELD(*event, ESF_EZ_RX_IP_INNER_CHKSUM_ERR)) {
3494 if (unlikely(!rx_encap_hdr))
3495 netdev_WARN(efx->net_dev,
3496 "invalid encapsulation type for RX_IP_INNER_CHKSUM_ERR: event="
3497 EFX_QWORD_FMT "\n",
3498 EFX_QWORD_VAL(*event));
3499 else if (unlikely(rx_l3_class != ESE_DZ_L3_CLASS_IP4 &&
3500 rx_l3_class != ESE_DZ_L3_CLASS_IP4_FRAG &&
3501 rx_l3_class != ESE_DZ_L3_CLASS_IP6 &&
3502 rx_l3_class != ESE_DZ_L3_CLASS_IP6_FRAG))
3503 netdev_WARN(efx->net_dev,
3504 "invalid class for RX_IP_INNER_CHKSUM_ERR: event="
3505 EFX_QWORD_FMT "\n",
3506 EFX_QWORD_VAL(*event));
3507 if (!efx->loopback_selftest)
3508 channel->n_rx_inner_ip_hdr_chksum_err += n_packets;
3509 return 0;
3510 }
3511 if (EFX_QWORD_FIELD(*event, ESF_EZ_RX_TCP_UDP_INNER_CHKSUM_ERR)) {
3512 if (unlikely(!rx_encap_hdr))
3513 netdev_WARN(efx->net_dev,
3514 "invalid encapsulation type for RX_TCP_UDP_INNER_CHKSUM_ERR: event="
3515 EFX_QWORD_FMT "\n",
3516 EFX_QWORD_VAL(*event));
3517 else if (unlikely((rx_l3_class != ESE_DZ_L3_CLASS_IP4 &&
3518 rx_l3_class != ESE_DZ_L3_CLASS_IP6) ||
3519 (rx_l4_class != ESE_FZ_L4_CLASS_TCP &&
3520 rx_l4_class != ESE_FZ_L4_CLASS_UDP)))
3521 netdev_WARN(efx->net_dev,
3522 "invalid class for RX_TCP_UDP_INNER_CHKSUM_ERR: event="
3523 EFX_QWORD_FMT "\n",
3524 EFX_QWORD_VAL(*event));
3525 if (!efx->loopback_selftest)
3526 channel->n_rx_inner_tcp_udp_chksum_err += n_packets;
3527 return 0;
3528 }
3529
3530 WARN_ON(!handled); /* No error bits were recognised */
3531 return 0;
3532 }
3533
3534 static int efx_ef10_handle_rx_event(struct efx_channel *channel,
3535 const efx_qword_t *event)
3536 {
3537 unsigned int rx_bytes, next_ptr_lbits, rx_queue_label;
3538 unsigned int rx_l3_class, rx_l4_class, rx_encap_hdr;
3539 unsigned int n_descs, n_packets, i;
3540 struct efx_nic *efx = channel->efx;
3541 struct efx_ef10_nic_data *nic_data = efx->nic_data;
3542 struct efx_rx_queue *rx_queue;
3543 efx_qword_t errors;
3544 bool rx_cont;
3545 u16 flags = 0;
3546
3547 if (unlikely(READ_ONCE(efx->reset_pending)))
3548 return 0;
3549
3550 /* Basic packet information */
3551 rx_bytes = EFX_QWORD_FIELD(*event, ESF_DZ_RX_BYTES);
3552 next_ptr_lbits = EFX_QWORD_FIELD(*event, ESF_DZ_RX_DSC_PTR_LBITS);
3553 rx_queue_label = EFX_QWORD_FIELD(*event, ESF_DZ_RX_QLABEL);
3554 rx_l3_class = EFX_QWORD_FIELD(*event, ESF_DZ_RX_L3_CLASS);
3555 rx_l4_class = EFX_QWORD_FIELD(*event, ESF_FZ_RX_L4_CLASS);
3556 rx_cont = EFX_QWORD_FIELD(*event, ESF_DZ_RX_CONT);
3557 rx_encap_hdr =
3558 nic_data->datapath_caps &
3559 (1 << MC_CMD_GET_CAPABILITIES_OUT_VXLAN_NVGRE_LBN) ?
3560 EFX_QWORD_FIELD(*event, ESF_EZ_RX_ENCAP_HDR) :
3561 ESE_EZ_ENCAP_HDR_NONE;
3562
3563 if (EFX_QWORD_FIELD(*event, ESF_DZ_RX_DROP_EVENT))
3564 netdev_WARN(efx->net_dev, "saw RX_DROP_EVENT: event="
3565 EFX_QWORD_FMT "\n",
3566 EFX_QWORD_VAL(*event));
3567
3568 rx_queue = efx_channel_get_rx_queue(channel);
3569
3570 if (unlikely(rx_queue_label != efx_rx_queue_index(rx_queue)))
3571 efx_ef10_handle_rx_wrong_queue(rx_queue, rx_queue_label);
3572
3573 n_descs = ((next_ptr_lbits - rx_queue->removed_count) &
3574 ((1 << ESF_DZ_RX_DSC_PTR_LBITS_WIDTH) - 1));
3575
3576 if (n_descs != rx_queue->scatter_n + 1) {
3577 struct efx_ef10_nic_data *nic_data = efx->nic_data;
3578
3579 /* detect rx abort */
3580 if (unlikely(n_descs == rx_queue->scatter_n)) {
3581 if (rx_queue->scatter_n == 0 || rx_bytes != 0)
3582 netdev_WARN(efx->net_dev,
3583 "invalid RX abort: scatter_n=%u event="
3584 EFX_QWORD_FMT "\n",
3585 rx_queue->scatter_n,
3586 EFX_QWORD_VAL(*event));
3587 efx_ef10_handle_rx_abort(rx_queue);
3588 return 0;
3589 }
3590
3591 /* Check that RX completion merging is valid, i.e.
3592 * the current firmware supports it and this is a
3593 * non-scattered packet.
3594 */
3595 if (!(nic_data->datapath_caps &
3596 (1 << MC_CMD_GET_CAPABILITIES_OUT_RX_BATCHING_LBN)) ||
3597 rx_queue->scatter_n != 0 || rx_cont) {
3598 efx_ef10_handle_rx_bad_lbits(
3599 rx_queue, next_ptr_lbits,
3600 (rx_queue->removed_count +
3601 rx_queue->scatter_n + 1) &
3602 ((1 << ESF_DZ_RX_DSC_PTR_LBITS_WIDTH) - 1));
3603 return 0;
3604 }
3605
3606 /* Merged completion for multiple non-scattered packets */
3607 rx_queue->scatter_n = 1;
3608 rx_queue->scatter_len = 0;
3609 n_packets = n_descs;
3610 ++channel->n_rx_merge_events;
3611 channel->n_rx_merge_packets += n_packets;
3612 flags |= EFX_RX_PKT_PREFIX_LEN;
3613 } else {
3614 ++rx_queue->scatter_n;
3615 rx_queue->scatter_len += rx_bytes;
3616 if (rx_cont)
3617 return 0;
3618 n_packets = 1;
3619 }
3620
3621 EFX_POPULATE_QWORD_5(errors, ESF_DZ_RX_ECRC_ERR, 1,
3622 ESF_DZ_RX_IPCKSUM_ERR, 1,
3623 ESF_DZ_RX_TCPUDP_CKSUM_ERR, 1,
3624 ESF_EZ_RX_IP_INNER_CHKSUM_ERR, 1,
3625 ESF_EZ_RX_TCP_UDP_INNER_CHKSUM_ERR, 1);
3626 EFX_AND_QWORD(errors, *event, errors);
3627 if (unlikely(!EFX_QWORD_IS_ZERO(errors))) {
3628 flags |= efx_ef10_handle_rx_event_errors(channel, n_packets,
3629 rx_encap_hdr,
3630 rx_l3_class, rx_l4_class,
3631 event);
3632 } else {
3633 bool tcpudp = rx_l4_class == ESE_FZ_L4_CLASS_TCP ||
3634 rx_l4_class == ESE_FZ_L4_CLASS_UDP;
3635
3636 switch (rx_encap_hdr) {
3637 case ESE_EZ_ENCAP_HDR_VXLAN: /* VxLAN or GENEVE */
3638 flags |= EFX_RX_PKT_CSUMMED; /* outer UDP csum */
3639 if (tcpudp)
3640 flags |= EFX_RX_PKT_CSUM_LEVEL; /* inner L4 */
3641 break;
3642 case ESE_EZ_ENCAP_HDR_GRE:
3643 case ESE_EZ_ENCAP_HDR_NONE:
3644 if (tcpudp)
3645 flags |= EFX_RX_PKT_CSUMMED;
3646 break;
3647 default:
3648 netdev_WARN(efx->net_dev,
3649 "unknown encapsulation type: event="
3650 EFX_QWORD_FMT "\n",
3651 EFX_QWORD_VAL(*event));
3652 }
3653 }
3654
3655 if (rx_l4_class == ESE_FZ_L4_CLASS_TCP)
3656 flags |= EFX_RX_PKT_TCP;
3657
3658 channel->irq_mod_score += 2 * n_packets;
3659
3660 /* Handle received packet(s) */
3661 for (i = 0; i < n_packets; i++) {
3662 efx_rx_packet(rx_queue,
3663 rx_queue->removed_count & rx_queue->ptr_mask,
3664 rx_queue->scatter_n, rx_queue->scatter_len,
3665 flags);
3666 rx_queue->removed_count += rx_queue->scatter_n;
3667 }
3668
3669 rx_queue->scatter_n = 0;
3670 rx_queue->scatter_len = 0;
3671
3672 return n_packets;
3673 }
3674
3675 static u32 efx_ef10_extract_event_ts(efx_qword_t *event)
3676 {
3677 u32 tstamp;
3678
3679 tstamp = EFX_QWORD_FIELD(*event, TX_TIMESTAMP_EVENT_TSTAMP_DATA_HI);
3680 tstamp <<= 16;
3681 tstamp |= EFX_QWORD_FIELD(*event, TX_TIMESTAMP_EVENT_TSTAMP_DATA_LO);
3682
3683 return tstamp;
3684 }
3685
3686 static void
3687 efx_ef10_handle_tx_event(struct efx_channel *channel, efx_qword_t *event)
3688 {
3689 struct efx_nic *efx = channel->efx;
3690 struct efx_tx_queue *tx_queue;
3691 unsigned int tx_ev_desc_ptr;
3692 unsigned int tx_ev_q_label;
3693 unsigned int tx_ev_type;
3694 u64 ts_part;
3695
3696 if (unlikely(READ_ONCE(efx->reset_pending)))
3697 return;
3698
3699 if (unlikely(EFX_QWORD_FIELD(*event, ESF_DZ_TX_DROP_EVENT)))
3700 return;
3701
3702 /* Get the transmit queue */
3703 tx_ev_q_label = EFX_QWORD_FIELD(*event, ESF_DZ_TX_QLABEL);
3704 tx_queue = efx_channel_get_tx_queue(channel,
3705 tx_ev_q_label % EFX_TXQ_TYPES);
3706
3707 if (!tx_queue->timestamping) {
3708 /* Transmit completion */
3709 tx_ev_desc_ptr = EFX_QWORD_FIELD(*event, ESF_DZ_TX_DESCR_INDX);
3710 efx_xmit_done(tx_queue, tx_ev_desc_ptr & tx_queue->ptr_mask);
3711 return;
3712 }
3713
3714 /* Transmit timestamps are only available for 8XXX series. They result
3715 * in three events per packet. These occur in order, and are:
3716 * - the normal completion event
3717 * - the low part of the timestamp
3718 * - the high part of the timestamp
3719 *
3720 * Each part of the timestamp is itself split across two 16 bit
3721 * fields in the event.
3722 */
3723 tx_ev_type = EFX_QWORD_FIELD(*event, ESF_EZ_TX_SOFT1);
3724
3725 switch (tx_ev_type) {
3726 case TX_TIMESTAMP_EVENT_TX_EV_COMPLETION:
3727 /* In case of Queue flush or FLR, we might have received
3728 * the previous TX completion event but not the Timestamp
3729 * events.
3730 */
3731 if (tx_queue->completed_desc_ptr != tx_queue->ptr_mask)
3732 efx_xmit_done(tx_queue, tx_queue->completed_desc_ptr);
3733
3734 tx_ev_desc_ptr = EFX_QWORD_FIELD(*event,
3735 ESF_DZ_TX_DESCR_INDX);
3736 tx_queue->completed_desc_ptr =
3737 tx_ev_desc_ptr & tx_queue->ptr_mask;
3738 break;
3739
3740 case TX_TIMESTAMP_EVENT_TX_EV_TSTAMP_LO:
3741 ts_part = efx_ef10_extract_event_ts(event);
3742 tx_queue->completed_timestamp_minor = ts_part;
3743 break;
3744
3745 case TX_TIMESTAMP_EVENT_TX_EV_TSTAMP_HI:
3746 ts_part = efx_ef10_extract_event_ts(event);
3747 tx_queue->completed_timestamp_major = ts_part;
3748
3749 efx_xmit_done(tx_queue, tx_queue->completed_desc_ptr);
3750 tx_queue->completed_desc_ptr = tx_queue->ptr_mask;
3751 break;
3752
3753 default:
3754 netif_err(efx, hw, efx->net_dev,
3755 "channel %d unknown tx event type %d (data "
3756 EFX_QWORD_FMT ")\n",
3757 channel->channel, tx_ev_type,
3758 EFX_QWORD_VAL(*event));
3759 break;
3760 }
3761 }
3762
3763 static void
3764 efx_ef10_handle_driver_event(struct efx_channel *channel, efx_qword_t *event)
3765 {
3766 struct efx_nic *efx = channel->efx;
3767 int subcode;
3768
3769 subcode = EFX_QWORD_FIELD(*event, ESF_DZ_DRV_SUB_CODE);
3770
3771 switch (subcode) {
3772 case ESE_DZ_DRV_TIMER_EV:
3773 case ESE_DZ_DRV_WAKE_UP_EV:
3774 break;
3775 case ESE_DZ_DRV_START_UP_EV:
3776 /* event queue init complete. ok. */
3777 break;
3778 default:
3779 netif_err(efx, hw, efx->net_dev,
3780 "channel %d unknown driver event type %d"
3781 " (data " EFX_QWORD_FMT ")\n",
3782 channel->channel, subcode,
3783 EFX_QWORD_VAL(*event));
3784
3785 }
3786 }
3787
3788 static void efx_ef10_handle_driver_generated_event(struct efx_channel *channel,
3789 efx_qword_t *event)
3790 {
3791 struct efx_nic *efx = channel->efx;
3792 u32 subcode;
3793
3794 subcode = EFX_QWORD_FIELD(*event, EFX_DWORD_0);
3795
3796 switch (subcode) {
3797 case EFX_EF10_TEST:
3798 channel->event_test_cpu = raw_smp_processor_id();
3799 break;
3800 case EFX_EF10_REFILL:
3801 /* The queue must be empty, so we won't receive any rx
3802 * events, so efx_process_channel() won't refill the
3803 * queue. Refill it here
3804 */
3805 efx_fast_push_rx_descriptors(&channel->rx_queue, true);
3806 break;
3807 default:
3808 netif_err(efx, hw, efx->net_dev,
3809 "channel %d unknown driver event type %u"
3810 " (data " EFX_QWORD_FMT ")\n",
3811 channel->channel, (unsigned) subcode,
3812 EFX_QWORD_VAL(*event));
3813 }
3814 }
3815
3816 static int efx_ef10_ev_process(struct efx_channel *channel, int quota)
3817 {
3818 struct efx_nic *efx = channel->efx;
3819 efx_qword_t event, *p_event;
3820 unsigned int read_ptr;
3821 int ev_code;
3822 int spent = 0;
3823
3824 if (quota <= 0)
3825 return spent;
3826
3827 read_ptr = channel->eventq_read_ptr;
3828
3829 for (;;) {
3830 p_event = efx_event(channel, read_ptr);
3831 event = *p_event;
3832
3833 if (!efx_event_present(&event))
3834 break;
3835
3836 EFX_SET_QWORD(*p_event);
3837
3838 ++read_ptr;
3839
3840 ev_code = EFX_QWORD_FIELD(event, ESF_DZ_EV_CODE);
3841
3842 netif_vdbg(efx, drv, efx->net_dev,
3843 "processing event on %d " EFX_QWORD_FMT "\n",
3844 channel->channel, EFX_QWORD_VAL(event));
3845
3846 switch (ev_code) {
3847 case ESE_DZ_EV_CODE_MCDI_EV:
3848 efx_mcdi_process_event(channel, &event);
3849 break;
3850 case ESE_DZ_EV_CODE_RX_EV:
3851 spent += efx_ef10_handle_rx_event(channel, &event);
3852 if (spent >= quota) {
3853 /* XXX can we split a merged event to
3854 * avoid going over-quota?
3855 */
3856 spent = quota;
3857 goto out;
3858 }
3859 break;
3860 case ESE_DZ_EV_CODE_TX_EV:
3861 efx_ef10_handle_tx_event(channel, &event);
3862 break;
3863 case ESE_DZ_EV_CODE_DRIVER_EV:
3864 efx_ef10_handle_driver_event(channel, &event);
3865 if (++spent == quota)
3866 goto out;
3867 break;
3868 case EFX_EF10_DRVGEN_EV:
3869 efx_ef10_handle_driver_generated_event(channel, &event);
3870 break;
3871 default:
3872 netif_err(efx, hw, efx->net_dev,
3873 "channel %d unknown event type %d"
3874 " (data " EFX_QWORD_FMT ")\n",
3875 channel->channel, ev_code,
3876 EFX_QWORD_VAL(event));
3877 }
3878 }
3879
3880 out:
3881 channel->eventq_read_ptr = read_ptr;
3882 return spent;
3883 }
3884
3885 static void efx_ef10_ev_read_ack(struct efx_channel *channel)
3886 {
3887 struct efx_nic *efx = channel->efx;
3888 efx_dword_t rptr;
3889
3890 if (EFX_EF10_WORKAROUND_35388(efx)) {
3891 BUILD_BUG_ON(EFX_MIN_EVQ_SIZE <
3892 (1 << ERF_DD_EVQ_IND_RPTR_WIDTH));
3893 BUILD_BUG_ON(EFX_MAX_EVQ_SIZE >
3894 (1 << 2 * ERF_DD_EVQ_IND_RPTR_WIDTH));
3895
3896 EFX_POPULATE_DWORD_2(rptr, ERF_DD_EVQ_IND_RPTR_FLAGS,
3897 EFE_DD_EVQ_IND_RPTR_FLAGS_HIGH,
3898 ERF_DD_EVQ_IND_RPTR,
3899 (channel->eventq_read_ptr &
3900 channel->eventq_mask) >>
3901 ERF_DD_EVQ_IND_RPTR_WIDTH);
3902 efx_writed_page(efx, &rptr, ER_DD_EVQ_INDIRECT,
3903 channel->channel);
3904 EFX_POPULATE_DWORD_2(rptr, ERF_DD_EVQ_IND_RPTR_FLAGS,
3905 EFE_DD_EVQ_IND_RPTR_FLAGS_LOW,
3906 ERF_DD_EVQ_IND_RPTR,
3907 channel->eventq_read_ptr &
3908 ((1 << ERF_DD_EVQ_IND_RPTR_WIDTH) - 1));
3909 efx_writed_page(efx, &rptr, ER_DD_EVQ_INDIRECT,
3910 channel->channel);
3911 } else {
3912 EFX_POPULATE_DWORD_1(rptr, ERF_DZ_EVQ_RPTR,
3913 channel->eventq_read_ptr &
3914 channel->eventq_mask);
3915 efx_writed_page(efx, &rptr, ER_DZ_EVQ_RPTR, channel->channel);
3916 }
3917 }
3918
3919 static void efx_ef10_ev_test_generate(struct efx_channel *channel)
3920 {
3921 MCDI_DECLARE_BUF(inbuf, MC_CMD_DRIVER_EVENT_IN_LEN);
3922 struct efx_nic *efx = channel->efx;
3923 efx_qword_t event;
3924 int rc;
3925
3926 EFX_POPULATE_QWORD_2(event,
3927 ESF_DZ_EV_CODE, EFX_EF10_DRVGEN_EV,
3928 ESF_DZ_EV_DATA, EFX_EF10_TEST);
3929
3930 MCDI_SET_DWORD(inbuf, DRIVER_EVENT_IN_EVQ, channel->channel);
3931
3932 /* MCDI_SET_QWORD is not appropriate here since EFX_POPULATE_* has
3933 * already swapped the data to little-endian order.
3934 */
3935 memcpy(MCDI_PTR(inbuf, DRIVER_EVENT_IN_DATA), &event.u64[0],
3936 sizeof(efx_qword_t));
3937
3938 rc = efx_mcdi_rpc(efx, MC_CMD_DRIVER_EVENT, inbuf, sizeof(inbuf),
3939 NULL, 0, NULL);
3940 if (rc != 0)
3941 goto fail;
3942
3943 return;
3944
3945 fail:
3946 WARN_ON(true);
3947 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
3948 }
3949
3950 void efx_ef10_handle_drain_event(struct efx_nic *efx)
3951 {
3952 if (atomic_dec_and_test(&efx->active_queues))
3953 wake_up(&efx->flush_wq);
3954
3955 WARN_ON(atomic_read(&efx->active_queues) < 0);
3956 }
3957
3958 static int efx_ef10_fini_dmaq(struct efx_nic *efx)
3959 {
3960 struct efx_ef10_nic_data *nic_data = efx->nic_data;
3961 struct efx_channel *channel;
3962 struct efx_tx_queue *tx_queue;
3963 struct efx_rx_queue *rx_queue;
3964 int pending;
3965
3966 /* If the MC has just rebooted, the TX/RX queues will have already been
3967 * torn down, but efx->active_queues needs to be set to zero.
3968 */
3969 if (nic_data->must_realloc_vis) {
3970 atomic_set(&efx->active_queues, 0);
3971 return 0;
3972 }
3973
3974 /* Do not attempt to write to the NIC during EEH recovery */
3975 if (efx->state != STATE_RECOVERY) {
3976 efx_for_each_channel(channel, efx) {
3977 efx_for_each_channel_rx_queue(rx_queue, channel)
3978 efx_ef10_rx_fini(rx_queue);
3979 efx_for_each_channel_tx_queue(tx_queue, channel)
3980 efx_ef10_tx_fini(tx_queue);
3981 }
3982
3983 wait_event_timeout(efx->flush_wq,
3984 atomic_read(&efx->active_queues) == 0,
3985 msecs_to_jiffies(EFX_MAX_FLUSH_TIME));
3986 pending = atomic_read(&efx->active_queues);
3987 if (pending) {
3988 netif_err(efx, hw, efx->net_dev, "failed to flush %d queues\n",
3989 pending);
3990 return -ETIMEDOUT;
3991 }
3992 }
3993
3994 return 0;
3995 }
3996
3997 static void efx_ef10_prepare_flr(struct efx_nic *efx)
3998 {
3999 atomic_set(&efx->active_queues, 0);
4000 }
4001
4002 /* Decide whether a filter should be exclusive or else should allow
4003 * delivery to additional recipients. Currently we decide that
4004 * filters for specific local unicast MAC and IP addresses are
4005 * exclusive.
4006 */
4007 static bool efx_ef10_filter_is_exclusive(const struct efx_filter_spec *spec)
4008 {
4009 if (spec->match_flags & EFX_FILTER_MATCH_LOC_MAC &&
4010 !is_multicast_ether_addr(spec->loc_mac))
4011 return true;
4012
4013 if ((spec->match_flags &
4014 (EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_LOC_HOST)) ==
4015 (EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_LOC_HOST)) {
4016 if (spec->ether_type == htons(ETH_P_IP) &&
4017 !ipv4_is_multicast(spec->loc_host[0]))
4018 return true;
4019 if (spec->ether_type == htons(ETH_P_IPV6) &&
4020 ((const u8 *)spec->loc_host)[0] != 0xff)
4021 return true;
4022 }
4023
4024 return false;
4025 }
4026
4027 static struct efx_filter_spec *
4028 efx_ef10_filter_entry_spec(const struct efx_ef10_filter_table *table,
4029 unsigned int filter_idx)
4030 {
4031 return (struct efx_filter_spec *)(table->entry[filter_idx].spec &
4032 ~EFX_EF10_FILTER_FLAGS);
4033 }
4034
4035 static unsigned int
4036 efx_ef10_filter_entry_flags(const struct efx_ef10_filter_table *table,
4037 unsigned int filter_idx)
4038 {
4039 return table->entry[filter_idx].spec & EFX_EF10_FILTER_FLAGS;
4040 }
4041
4042 static void
4043 efx_ef10_filter_set_entry(struct efx_ef10_filter_table *table,
4044 unsigned int filter_idx,
4045 const struct efx_filter_spec *spec,
4046 unsigned int flags)
4047 {
4048 table->entry[filter_idx].spec = (unsigned long)spec | flags;
4049 }
4050
4051 static void
4052 efx_ef10_filter_push_prep_set_match_fields(struct efx_nic *efx,
4053 const struct efx_filter_spec *spec,
4054 efx_dword_t *inbuf)
4055 {
4056 enum efx_encap_type encap_type = efx_filter_get_encap_type(spec);
4057 u32 match_fields = 0, uc_match, mc_match;
4058
4059 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_OP,
4060 efx_ef10_filter_is_exclusive(spec) ?
4061 MC_CMD_FILTER_OP_IN_OP_INSERT :
4062 MC_CMD_FILTER_OP_IN_OP_SUBSCRIBE);
4063
4064 /* Convert match flags and values. Unlike almost
4065 * everything else in MCDI, these fields are in
4066 * network byte order.
4067 */
4068 #define COPY_VALUE(value, mcdi_field) \
4069 do { \
4070 match_fields |= \
4071 1 << MC_CMD_FILTER_OP_IN_MATCH_ ## \
4072 mcdi_field ## _LBN; \
4073 BUILD_BUG_ON( \
4074 MC_CMD_FILTER_OP_IN_ ## mcdi_field ## _LEN < \
4075 sizeof(value)); \
4076 memcpy(MCDI_PTR(inbuf, FILTER_OP_IN_ ## mcdi_field), \
4077 &value, sizeof(value)); \
4078 } while (0)
4079 #define COPY_FIELD(gen_flag, gen_field, mcdi_field) \
4080 if (spec->match_flags & EFX_FILTER_MATCH_ ## gen_flag) { \
4081 COPY_VALUE(spec->gen_field, mcdi_field); \
4082 }
4083 /* Handle encap filters first. They will always be mismatch
4084 * (unknown UC or MC) filters
4085 */
4086 if (encap_type) {
4087 /* ether_type and outer_ip_proto need to be variables
4088 * because COPY_VALUE wants to memcpy them
4089 */
4090 __be16 ether_type =
4091 htons(encap_type & EFX_ENCAP_FLAG_IPV6 ?
4092 ETH_P_IPV6 : ETH_P_IP);
4093 u8 vni_type = MC_CMD_FILTER_OP_EXT_IN_VNI_TYPE_GENEVE;
4094 u8 outer_ip_proto;
4095
4096 switch (encap_type & EFX_ENCAP_TYPES_MASK) {
4097 case EFX_ENCAP_TYPE_VXLAN:
4098 vni_type = MC_CMD_FILTER_OP_EXT_IN_VNI_TYPE_VXLAN;
4099 /* fallthrough */
4100 case EFX_ENCAP_TYPE_GENEVE:
4101 COPY_VALUE(ether_type, ETHER_TYPE);
4102 outer_ip_proto = IPPROTO_UDP;
4103 COPY_VALUE(outer_ip_proto, IP_PROTO);
4104 /* We always need to set the type field, even
4105 * though we're not matching on the TNI.
4106 */
4107 MCDI_POPULATE_DWORD_1(inbuf,
4108 FILTER_OP_EXT_IN_VNI_OR_VSID,
4109 FILTER_OP_EXT_IN_VNI_TYPE,
4110 vni_type);
4111 break;
4112 case EFX_ENCAP_TYPE_NVGRE:
4113 COPY_VALUE(ether_type, ETHER_TYPE);
4114 outer_ip_proto = IPPROTO_GRE;
4115 COPY_VALUE(outer_ip_proto, IP_PROTO);
4116 break;
4117 default:
4118 WARN_ON(1);
4119 }
4120
4121 uc_match = MC_CMD_FILTER_OP_EXT_IN_MATCH_IFRM_UNKNOWN_UCAST_DST_LBN;
4122 mc_match = MC_CMD_FILTER_OP_EXT_IN_MATCH_IFRM_UNKNOWN_MCAST_DST_LBN;
4123 } else {
4124 uc_match = MC_CMD_FILTER_OP_EXT_IN_MATCH_UNKNOWN_UCAST_DST_LBN;
4125 mc_match = MC_CMD_FILTER_OP_EXT_IN_MATCH_UNKNOWN_MCAST_DST_LBN;
4126 }
4127
4128 if (spec->match_flags & EFX_FILTER_MATCH_LOC_MAC_IG)
4129 match_fields |=
4130 is_multicast_ether_addr(spec->loc_mac) ?
4131 1 << mc_match :
4132 1 << uc_match;
4133 COPY_FIELD(REM_HOST, rem_host, SRC_IP);
4134 COPY_FIELD(LOC_HOST, loc_host, DST_IP);
4135 COPY_FIELD(REM_MAC, rem_mac, SRC_MAC);
4136 COPY_FIELD(REM_PORT, rem_port, SRC_PORT);
4137 COPY_FIELD(LOC_MAC, loc_mac, DST_MAC);
4138 COPY_FIELD(LOC_PORT, loc_port, DST_PORT);
4139 COPY_FIELD(ETHER_TYPE, ether_type, ETHER_TYPE);
4140 COPY_FIELD(INNER_VID, inner_vid, INNER_VLAN);
4141 COPY_FIELD(OUTER_VID, outer_vid, OUTER_VLAN);
4142 COPY_FIELD(IP_PROTO, ip_proto, IP_PROTO);
4143 #undef COPY_FIELD
4144 #undef COPY_VALUE
4145 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_MATCH_FIELDS,
4146 match_fields);
4147 }
4148
4149 static void efx_ef10_filter_push_prep(struct efx_nic *efx,
4150 const struct efx_filter_spec *spec,
4151 efx_dword_t *inbuf, u64 handle,
4152 struct efx_rss_context *ctx,
4153 bool replacing)
4154 {
4155 struct efx_ef10_nic_data *nic_data = efx->nic_data;
4156 u32 flags = spec->flags;
4157
4158 memset(inbuf, 0, MC_CMD_FILTER_OP_EXT_IN_LEN);
4159
4160 /* If RSS filter, caller better have given us an RSS context */
4161 if (flags & EFX_FILTER_FLAG_RX_RSS) {
4162 /* We don't have the ability to return an error, so we'll just
4163 * log a warning and disable RSS for the filter.
4164 */
4165 if (WARN_ON_ONCE(!ctx))
4166 flags &= ~EFX_FILTER_FLAG_RX_RSS;
4167 else if (WARN_ON_ONCE(ctx->context_id == EFX_EF10_RSS_CONTEXT_INVALID))
4168 flags &= ~EFX_FILTER_FLAG_RX_RSS;
4169 }
4170
4171 if (replacing) {
4172 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_OP,
4173 MC_CMD_FILTER_OP_IN_OP_REPLACE);
4174 MCDI_SET_QWORD(inbuf, FILTER_OP_IN_HANDLE, handle);
4175 } else {
4176 efx_ef10_filter_push_prep_set_match_fields(efx, spec, inbuf);
4177 }
4178
4179 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_PORT_ID, nic_data->vport_id);
4180 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_RX_DEST,
4181 spec->dmaq_id == EFX_FILTER_RX_DMAQ_ID_DROP ?
4182 MC_CMD_FILTER_OP_IN_RX_DEST_DROP :
4183 MC_CMD_FILTER_OP_IN_RX_DEST_HOST);
4184 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_TX_DOMAIN, 0);
4185 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_TX_DEST,
4186 MC_CMD_FILTER_OP_IN_TX_DEST_DEFAULT);
4187 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_RX_QUEUE,
4188 spec->dmaq_id == EFX_FILTER_RX_DMAQ_ID_DROP ?
4189 0 : spec->dmaq_id);
4190 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_RX_MODE,
4191 (flags & EFX_FILTER_FLAG_RX_RSS) ?
4192 MC_CMD_FILTER_OP_IN_RX_MODE_RSS :
4193 MC_CMD_FILTER_OP_IN_RX_MODE_SIMPLE);
4194 if (flags & EFX_FILTER_FLAG_RX_RSS)
4195 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_RX_CONTEXT, ctx->context_id);
4196 }
4197
4198 static int efx_ef10_filter_push(struct efx_nic *efx,
4199 const struct efx_filter_spec *spec, u64 *handle,
4200 struct efx_rss_context *ctx, bool replacing)
4201 {
4202 MCDI_DECLARE_BUF(inbuf, MC_CMD_FILTER_OP_EXT_IN_LEN);
4203 MCDI_DECLARE_BUF(outbuf, MC_CMD_FILTER_OP_EXT_OUT_LEN);
4204 int rc;
4205
4206 efx_ef10_filter_push_prep(efx, spec, inbuf, *handle, ctx, replacing);
4207 rc = efx_mcdi_rpc(efx, MC_CMD_FILTER_OP, inbuf, sizeof(inbuf),
4208 outbuf, sizeof(outbuf), NULL);
4209 if (rc == 0)
4210 *handle = MCDI_QWORD(outbuf, FILTER_OP_OUT_HANDLE);
4211 if (rc == -ENOSPC)
4212 rc = -EBUSY; /* to match efx_farch_filter_insert() */
4213 return rc;
4214 }
4215
4216 static u32 efx_ef10_filter_mcdi_flags_from_spec(const struct efx_filter_spec *spec)
4217 {
4218 enum efx_encap_type encap_type = efx_filter_get_encap_type(spec);
4219 unsigned int match_flags = spec->match_flags;
4220 unsigned int uc_match, mc_match;
4221 u32 mcdi_flags = 0;
4222
4223 #define MAP_FILTER_TO_MCDI_FLAG(gen_flag, mcdi_field, encap) { \
4224 unsigned int old_match_flags = match_flags; \
4225 match_flags &= ~EFX_FILTER_MATCH_ ## gen_flag; \
4226 if (match_flags != old_match_flags) \
4227 mcdi_flags |= \
4228 (1 << ((encap) ? \
4229 MC_CMD_FILTER_OP_EXT_IN_MATCH_IFRM_ ## \
4230 mcdi_field ## _LBN : \
4231 MC_CMD_FILTER_OP_EXT_IN_MATCH_ ##\
4232 mcdi_field ## _LBN)); \
4233 }
4234 /* inner or outer based on encap type */
4235 MAP_FILTER_TO_MCDI_FLAG(REM_HOST, SRC_IP, encap_type);
4236 MAP_FILTER_TO_MCDI_FLAG(LOC_HOST, DST_IP, encap_type);
4237 MAP_FILTER_TO_MCDI_FLAG(REM_MAC, SRC_MAC, encap_type);
4238 MAP_FILTER_TO_MCDI_FLAG(REM_PORT, SRC_PORT, encap_type);
4239 MAP_FILTER_TO_MCDI_FLAG(LOC_MAC, DST_MAC, encap_type);
4240 MAP_FILTER_TO_MCDI_FLAG(LOC_PORT, DST_PORT, encap_type);
4241 MAP_FILTER_TO_MCDI_FLAG(ETHER_TYPE, ETHER_TYPE, encap_type);
4242 MAP_FILTER_TO_MCDI_FLAG(IP_PROTO, IP_PROTO, encap_type);
4243 /* always outer */
4244 MAP_FILTER_TO_MCDI_FLAG(INNER_VID, INNER_VLAN, false);
4245 MAP_FILTER_TO_MCDI_FLAG(OUTER_VID, OUTER_VLAN, false);
4246 #undef MAP_FILTER_TO_MCDI_FLAG
4247
4248 /* special handling for encap type, and mismatch */
4249 if (encap_type) {
4250 match_flags &= ~EFX_FILTER_MATCH_ENCAP_TYPE;
4251 mcdi_flags |=
4252 (1 << MC_CMD_FILTER_OP_EXT_IN_MATCH_ETHER_TYPE_LBN);
4253 mcdi_flags |= (1 << MC_CMD_FILTER_OP_EXT_IN_MATCH_IP_PROTO_LBN);
4254
4255 uc_match = MC_CMD_FILTER_OP_EXT_IN_MATCH_IFRM_UNKNOWN_UCAST_DST_LBN;
4256 mc_match = MC_CMD_FILTER_OP_EXT_IN_MATCH_IFRM_UNKNOWN_MCAST_DST_LBN;
4257 } else {
4258 uc_match = MC_CMD_FILTER_OP_EXT_IN_MATCH_UNKNOWN_UCAST_DST_LBN;
4259 mc_match = MC_CMD_FILTER_OP_EXT_IN_MATCH_UNKNOWN_MCAST_DST_LBN;
4260 }
4261
4262 if (match_flags & EFX_FILTER_MATCH_LOC_MAC_IG) {
4263 match_flags &= ~EFX_FILTER_MATCH_LOC_MAC_IG;
4264 mcdi_flags |=
4265 is_multicast_ether_addr(spec->loc_mac) ?
4266 1 << mc_match :
4267 1 << uc_match;
4268 }
4269
4270 /* Did we map them all? */
4271 WARN_ON_ONCE(match_flags);
4272
4273 return mcdi_flags;
4274 }
4275
4276 static int efx_ef10_filter_pri(struct efx_ef10_filter_table *table,
4277 const struct efx_filter_spec *spec)
4278 {
4279 u32 mcdi_flags = efx_ef10_filter_mcdi_flags_from_spec(spec);
4280 unsigned int match_pri;
4281
4282 for (match_pri = 0;
4283 match_pri < table->rx_match_count;
4284 match_pri++)
4285 if (table->rx_match_mcdi_flags[match_pri] == mcdi_flags)
4286 return match_pri;
4287
4288 return -EPROTONOSUPPORT;
4289 }
4290
4291 static s32 efx_ef10_filter_insert_locked(struct efx_nic *efx,
4292 struct efx_filter_spec *spec,
4293 bool replace_equal)
4294 {
4295 DECLARE_BITMAP(mc_rem_map, EFX_EF10_FILTER_SEARCH_LIMIT);
4296 struct efx_ef10_nic_data *nic_data = efx->nic_data;
4297 struct efx_ef10_filter_table *table;
4298 struct efx_filter_spec *saved_spec;
4299 struct efx_rss_context *ctx = NULL;
4300 unsigned int match_pri, hash;
4301 unsigned int priv_flags;
4302 bool rss_locked = false;
4303 bool replacing = false;
4304 unsigned int depth, i;
4305 int ins_index = -1;
4306 DEFINE_WAIT(wait);
4307 bool is_mc_recip;
4308 s32 rc;
4309
4310 WARN_ON(!rwsem_is_locked(&efx->filter_sem));
4311 table = efx->filter_state;
4312 down_write(&table->lock);
4313
4314 /* For now, only support RX filters */
4315 if ((spec->flags & (EFX_FILTER_FLAG_RX | EFX_FILTER_FLAG_TX)) !=
4316 EFX_FILTER_FLAG_RX) {
4317 rc = -EINVAL;
4318 goto out_unlock;
4319 }
4320
4321 rc = efx_ef10_filter_pri(table, spec);
4322 if (rc < 0)
4323 goto out_unlock;
4324 match_pri = rc;
4325
4326 hash = efx_filter_spec_hash(spec);
4327 is_mc_recip = efx_filter_is_mc_recipient(spec);
4328 if (is_mc_recip)
4329 bitmap_zero(mc_rem_map, EFX_EF10_FILTER_SEARCH_LIMIT);
4330
4331 if (spec->flags & EFX_FILTER_FLAG_RX_RSS) {
4332 mutex_lock(&efx->rss_lock);
4333 rss_locked = true;
4334 if (spec->rss_context)
4335 ctx = efx_find_rss_context_entry(efx, spec->rss_context);
4336 else
4337 ctx = &efx->rss_context;
4338 if (!ctx) {
4339 rc = -ENOENT;
4340 goto out_unlock;
4341 }
4342 if (ctx->context_id == EFX_EF10_RSS_CONTEXT_INVALID) {
4343 rc = -EOPNOTSUPP;
4344 goto out_unlock;
4345 }
4346 }
4347
4348 /* Find any existing filters with the same match tuple or
4349 * else a free slot to insert at.
4350 */
4351 for (depth = 1; depth < EFX_EF10_FILTER_SEARCH_LIMIT; depth++) {
4352 i = (hash + depth) & (HUNT_FILTER_TBL_ROWS - 1);
4353 saved_spec = efx_ef10_filter_entry_spec(table, i);
4354
4355 if (!saved_spec) {
4356 if (ins_index < 0)
4357 ins_index = i;
4358 } else if (efx_filter_spec_equal(spec, saved_spec)) {
4359 if (spec->priority < saved_spec->priority &&
4360 spec->priority != EFX_FILTER_PRI_AUTO) {
4361 rc = -EPERM;
4362 goto out_unlock;
4363 }
4364 if (!is_mc_recip) {
4365 /* This is the only one */
4366 if (spec->priority ==
4367 saved_spec->priority &&
4368 !replace_equal) {
4369 rc = -EEXIST;
4370 goto out_unlock;
4371 }
4372 ins_index = i;
4373 break;
4374 } else if (spec->priority >
4375 saved_spec->priority ||
4376 (spec->priority ==
4377 saved_spec->priority &&
4378 replace_equal)) {
4379 if (ins_index < 0)
4380 ins_index = i;
4381 else
4382 __set_bit(depth, mc_rem_map);
4383 }
4384 }
4385 }
4386
4387 /* Once we reach the maximum search depth, use the first suitable
4388 * slot, or return -EBUSY if there was none
4389 */
4390 if (ins_index < 0) {
4391 rc = -EBUSY;
4392 goto out_unlock;
4393 }
4394
4395 /* Create a software table entry if necessary. */
4396 saved_spec = efx_ef10_filter_entry_spec(table, ins_index);
4397 if (saved_spec) {
4398 if (spec->priority == EFX_FILTER_PRI_AUTO &&
4399 saved_spec->priority >= EFX_FILTER_PRI_AUTO) {
4400 /* Just make sure it won't be removed */
4401 if (saved_spec->priority > EFX_FILTER_PRI_AUTO)
4402 saved_spec->flags |= EFX_FILTER_FLAG_RX_OVER_AUTO;
4403 table->entry[ins_index].spec &=
4404 ~EFX_EF10_FILTER_FLAG_AUTO_OLD;
4405 rc = ins_index;
4406 goto out_unlock;
4407 }
4408 replacing = true;
4409 priv_flags = efx_ef10_filter_entry_flags(table, ins_index);
4410 } else {
4411 saved_spec = kmalloc(sizeof(*spec), GFP_ATOMIC);
4412 if (!saved_spec) {
4413 rc = -ENOMEM;
4414 goto out_unlock;
4415 }
4416 *saved_spec = *spec;
4417 priv_flags = 0;
4418 }
4419 efx_ef10_filter_set_entry(table, ins_index, saved_spec, priv_flags);
4420
4421 /* Actually insert the filter on the HW */
4422 rc = efx_ef10_filter_push(efx, spec, &table->entry[ins_index].handle,
4423 ctx, replacing);
4424
4425 if (rc == -EINVAL && nic_data->must_realloc_vis)
4426 /* The MC rebooted under us, causing it to reject our filter
4427 * insertion as pointing to an invalid VI (spec->dmaq_id).
4428 */
4429 rc = -EAGAIN;
4430
4431 /* Finalise the software table entry */
4432 if (rc == 0) {
4433 if (replacing) {
4434 /* Update the fields that may differ */
4435 if (saved_spec->priority == EFX_FILTER_PRI_AUTO)
4436 saved_spec->flags |=
4437 EFX_FILTER_FLAG_RX_OVER_AUTO;
4438 saved_spec->priority = spec->priority;
4439 saved_spec->flags &= EFX_FILTER_FLAG_RX_OVER_AUTO;
4440 saved_spec->flags |= spec->flags;
4441 saved_spec->rss_context = spec->rss_context;
4442 saved_spec->dmaq_id = spec->dmaq_id;
4443 }
4444 } else if (!replacing) {
4445 kfree(saved_spec);
4446 saved_spec = NULL;
4447 } else {
4448 /* We failed to replace, so the old filter is still present.
4449 * Roll back the software table to reflect this. In fact the
4450 * efx_ef10_filter_set_entry() call below will do the right
4451 * thing, so nothing extra is needed here.
4452 */
4453 }
4454 efx_ef10_filter_set_entry(table, ins_index, saved_spec, priv_flags);
4455
4456 /* Remove and finalise entries for lower-priority multicast
4457 * recipients
4458 */
4459 if (is_mc_recip) {
4460 MCDI_DECLARE_BUF(inbuf, MC_CMD_FILTER_OP_EXT_IN_LEN);
4461 unsigned int depth, i;
4462
4463 memset(inbuf, 0, sizeof(inbuf));
4464
4465 for (depth = 0; depth < EFX_EF10_FILTER_SEARCH_LIMIT; depth++) {
4466 if (!test_bit(depth, mc_rem_map))
4467 continue;
4468
4469 i = (hash + depth) & (HUNT_FILTER_TBL_ROWS - 1);
4470 saved_spec = efx_ef10_filter_entry_spec(table, i);
4471 priv_flags = efx_ef10_filter_entry_flags(table, i);
4472
4473 if (rc == 0) {
4474 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_OP,
4475 MC_CMD_FILTER_OP_IN_OP_UNSUBSCRIBE);
4476 MCDI_SET_QWORD(inbuf, FILTER_OP_IN_HANDLE,
4477 table->entry[i].handle);
4478 rc = efx_mcdi_rpc(efx, MC_CMD_FILTER_OP,
4479 inbuf, sizeof(inbuf),
4480 NULL, 0, NULL);
4481 }
4482
4483 if (rc == 0) {
4484 kfree(saved_spec);
4485 saved_spec = NULL;
4486 priv_flags = 0;
4487 }
4488 efx_ef10_filter_set_entry(table, i, saved_spec,
4489 priv_flags);
4490 }
4491 }
4492
4493 /* If successful, return the inserted filter ID */
4494 if (rc == 0)
4495 rc = efx_ef10_make_filter_id(match_pri, ins_index);
4496
4497 out_unlock:
4498 if (rss_locked)
4499 mutex_unlock(&efx->rss_lock);
4500 up_write(&table->lock);
4501 return rc;
4502 }
4503
4504 static s32 efx_ef10_filter_insert(struct efx_nic *efx,
4505 struct efx_filter_spec *spec,
4506 bool replace_equal)
4507 {
4508 s32 ret;
4509
4510 down_read(&efx->filter_sem);
4511 ret = efx_ef10_filter_insert_locked(efx, spec, replace_equal);
4512 up_read(&efx->filter_sem);
4513
4514 return ret;
4515 }
4516
4517 static void efx_ef10_filter_update_rx_scatter(struct efx_nic *efx)
4518 {
4519 /* no need to do anything here on EF10 */
4520 }
4521
4522 /* Remove a filter.
4523 * If !by_index, remove by ID
4524 * If by_index, remove by index
4525 * Filter ID may come from userland and must be range-checked.
4526 * Caller must hold efx->filter_sem for read, and efx->filter_state->lock
4527 * for write.
4528 */
4529 static int efx_ef10_filter_remove_internal(struct efx_nic *efx,
4530 unsigned int priority_mask,
4531 u32 filter_id, bool by_index)
4532 {
4533 unsigned int filter_idx = efx_ef10_filter_get_unsafe_id(filter_id);
4534 struct efx_ef10_filter_table *table = efx->filter_state;
4535 MCDI_DECLARE_BUF(inbuf,
4536 MC_CMD_FILTER_OP_IN_HANDLE_OFST +
4537 MC_CMD_FILTER_OP_IN_HANDLE_LEN);
4538 struct efx_filter_spec *spec;
4539 DEFINE_WAIT(wait);
4540 int rc;
4541
4542 spec = efx_ef10_filter_entry_spec(table, filter_idx);
4543 if (!spec ||
4544 (!by_index &&
4545 efx_ef10_filter_pri(table, spec) !=
4546 efx_ef10_filter_get_unsafe_pri(filter_id)))
4547 return -ENOENT;
4548
4549 if (spec->flags & EFX_FILTER_FLAG_RX_OVER_AUTO &&
4550 priority_mask == (1U << EFX_FILTER_PRI_AUTO)) {
4551 /* Just remove flags */
4552 spec->flags &= ~EFX_FILTER_FLAG_RX_OVER_AUTO;
4553 table->entry[filter_idx].spec &= ~EFX_EF10_FILTER_FLAG_AUTO_OLD;
4554 return 0;
4555 }
4556
4557 if (!(priority_mask & (1U << spec->priority)))
4558 return -ENOENT;
4559
4560 if (spec->flags & EFX_FILTER_FLAG_RX_OVER_AUTO) {
4561 /* Reset to an automatic filter */
4562
4563 struct efx_filter_spec new_spec = *spec;
4564
4565 new_spec.priority = EFX_FILTER_PRI_AUTO;
4566 new_spec.flags = (EFX_FILTER_FLAG_RX |
4567 (efx_rss_active(&efx->rss_context) ?
4568 EFX_FILTER_FLAG_RX_RSS : 0));
4569 new_spec.dmaq_id = 0;
4570 new_spec.rss_context = 0;
4571 rc = efx_ef10_filter_push(efx, &new_spec,
4572 &table->entry[filter_idx].handle,
4573 &efx->rss_context,
4574 true);
4575
4576 if (rc == 0)
4577 *spec = new_spec;
4578 } else {
4579 /* Really remove the filter */
4580
4581 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_OP,
4582 efx_ef10_filter_is_exclusive(spec) ?
4583 MC_CMD_FILTER_OP_IN_OP_REMOVE :
4584 MC_CMD_FILTER_OP_IN_OP_UNSUBSCRIBE);
4585 MCDI_SET_QWORD(inbuf, FILTER_OP_IN_HANDLE,
4586 table->entry[filter_idx].handle);
4587 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_FILTER_OP,
4588 inbuf, sizeof(inbuf), NULL, 0, NULL);
4589
4590 if ((rc == 0) || (rc == -ENOENT)) {
4591 /* Filter removed OK or didn't actually exist */
4592 kfree(spec);
4593 efx_ef10_filter_set_entry(table, filter_idx, NULL, 0);
4594 } else {
4595 efx_mcdi_display_error(efx, MC_CMD_FILTER_OP,
4596 MC_CMD_FILTER_OP_EXT_IN_LEN,
4597 NULL, 0, rc);
4598 }
4599 }
4600
4601 return rc;
4602 }
4603
4604 static int efx_ef10_filter_remove_safe(struct efx_nic *efx,
4605 enum efx_filter_priority priority,
4606 u32 filter_id)
4607 {
4608 struct efx_ef10_filter_table *table;
4609 int rc;
4610
4611 down_read(&efx->filter_sem);
4612 table = efx->filter_state;
4613 down_write(&table->lock);
4614 rc = efx_ef10_filter_remove_internal(efx, 1U << priority, filter_id,
4615 false);
4616 up_write(&table->lock);
4617 up_read(&efx->filter_sem);
4618 return rc;
4619 }
4620
4621 /* Caller must hold efx->filter_sem for read */
4622 static void efx_ef10_filter_remove_unsafe(struct efx_nic *efx,
4623 enum efx_filter_priority priority,
4624 u32 filter_id)
4625 {
4626 struct efx_ef10_filter_table *table = efx->filter_state;
4627
4628 if (filter_id == EFX_EF10_FILTER_ID_INVALID)
4629 return;
4630
4631 down_write(&table->lock);
4632 efx_ef10_filter_remove_internal(efx, 1U << priority, filter_id,
4633 true);
4634 up_write(&table->lock);
4635 }
4636
4637 static int efx_ef10_filter_get_safe(struct efx_nic *efx,
4638 enum efx_filter_priority priority,
4639 u32 filter_id, struct efx_filter_spec *spec)
4640 {
4641 unsigned int filter_idx = efx_ef10_filter_get_unsafe_id(filter_id);
4642 const struct efx_filter_spec *saved_spec;
4643 struct efx_ef10_filter_table *table;
4644 int rc;
4645
4646 down_read(&efx->filter_sem);
4647 table = efx->filter_state;
4648 down_read(&table->lock);
4649 saved_spec = efx_ef10_filter_entry_spec(table, filter_idx);
4650 if (saved_spec && saved_spec->priority == priority &&
4651 efx_ef10_filter_pri(table, saved_spec) ==
4652 efx_ef10_filter_get_unsafe_pri(filter_id)) {
4653 *spec = *saved_spec;
4654 rc = 0;
4655 } else {
4656 rc = -ENOENT;
4657 }
4658 up_read(&table->lock);
4659 up_read(&efx->filter_sem);
4660 return rc;
4661 }
4662
4663 static int efx_ef10_filter_clear_rx(struct efx_nic *efx,
4664 enum efx_filter_priority priority)
4665 {
4666 struct efx_ef10_filter_table *table;
4667 unsigned int priority_mask;
4668 unsigned int i;
4669 int rc;
4670
4671 priority_mask = (((1U << (priority + 1)) - 1) &
4672 ~(1U << EFX_FILTER_PRI_AUTO));
4673
4674 down_read(&efx->filter_sem);
4675 table = efx->filter_state;
4676 down_write(&table->lock);
4677 for (i = 0; i < HUNT_FILTER_TBL_ROWS; i++) {
4678 rc = efx_ef10_filter_remove_internal(efx, priority_mask,
4679 i, true);
4680 if (rc && rc != -ENOENT)
4681 break;
4682 rc = 0;
4683 }
4684
4685 up_write(&table->lock);
4686 up_read(&efx->filter_sem);
4687 return rc;
4688 }
4689
4690 static u32 efx_ef10_filter_count_rx_used(struct efx_nic *efx,
4691 enum efx_filter_priority priority)
4692 {
4693 struct efx_ef10_filter_table *table;
4694 unsigned int filter_idx;
4695 s32 count = 0;
4696
4697 down_read(&efx->filter_sem);
4698 table = efx->filter_state;
4699 down_read(&table->lock);
4700 for (filter_idx = 0; filter_idx < HUNT_FILTER_TBL_ROWS; filter_idx++) {
4701 if (table->entry[filter_idx].spec &&
4702 efx_ef10_filter_entry_spec(table, filter_idx)->priority ==
4703 priority)
4704 ++count;
4705 }
4706 up_read(&table->lock);
4707 up_read(&efx->filter_sem);
4708 return count;
4709 }
4710
4711 static u32 efx_ef10_filter_get_rx_id_limit(struct efx_nic *efx)
4712 {
4713 struct efx_ef10_filter_table *table = efx->filter_state;
4714
4715 return table->rx_match_count * HUNT_FILTER_TBL_ROWS * 2;
4716 }
4717
4718 static s32 efx_ef10_filter_get_rx_ids(struct efx_nic *efx,
4719 enum efx_filter_priority priority,
4720 u32 *buf, u32 size)
4721 {
4722 struct efx_ef10_filter_table *table;
4723 struct efx_filter_spec *spec;
4724 unsigned int filter_idx;
4725 s32 count = 0;
4726
4727 down_read(&efx->filter_sem);
4728 table = efx->filter_state;
4729 down_read(&table->lock);
4730
4731 for (filter_idx = 0; filter_idx < HUNT_FILTER_TBL_ROWS; filter_idx++) {
4732 spec = efx_ef10_filter_entry_spec(table, filter_idx);
4733 if (spec && spec->priority == priority) {
4734 if (count == size) {
4735 count = -EMSGSIZE;
4736 break;
4737 }
4738 buf[count++] =
4739 efx_ef10_make_filter_id(
4740 efx_ef10_filter_pri(table, spec),
4741 filter_idx);
4742 }
4743 }
4744 up_read(&table->lock);
4745 up_read(&efx->filter_sem);
4746 return count;
4747 }
4748
4749 #ifdef CONFIG_RFS_ACCEL
4750
4751 static bool efx_ef10_filter_rfs_expire_one(struct efx_nic *efx, u32 flow_id,
4752 unsigned int filter_idx)
4753 {
4754 struct efx_filter_spec *spec, saved_spec;
4755 struct efx_ef10_filter_table *table;
4756 struct efx_arfs_rule *rule = NULL;
4757 bool ret = true, force = false;
4758 u16 arfs_id;
4759
4760 down_read(&efx->filter_sem);
4761 table = efx->filter_state;
4762 down_write(&table->lock);
4763 spec = efx_ef10_filter_entry_spec(table, filter_idx);
4764
4765 if (!spec || spec->priority != EFX_FILTER_PRI_HINT)
4766 goto out_unlock;
4767
4768 spin_lock_bh(&efx->rps_hash_lock);
4769 if (!efx->rps_hash_table) {
4770 /* In the absence of the table, we always return 0 to ARFS. */
4771 arfs_id = 0;
4772 } else {
4773 rule = efx_rps_hash_find(efx, spec);
4774 if (!rule)
4775 /* ARFS table doesn't know of this filter, so remove it */
4776 goto expire;
4777 arfs_id = rule->arfs_id;
4778 ret = efx_rps_check_rule(rule, filter_idx, &force);
4779 if (force)
4780 goto expire;
4781 if (!ret) {
4782 spin_unlock_bh(&efx->rps_hash_lock);
4783 goto out_unlock;
4784 }
4785 }
4786 if (!rps_may_expire_flow(efx->net_dev, spec->dmaq_id, flow_id, arfs_id))
4787 ret = false;
4788 else if (rule)
4789 rule->filter_id = EFX_ARFS_FILTER_ID_REMOVING;
4790 expire:
4791 saved_spec = *spec; /* remove operation will kfree spec */
4792 spin_unlock_bh(&efx->rps_hash_lock);
4793 /* At this point (since we dropped the lock), another thread might queue
4794 * up a fresh insertion request (but the actual insertion will be held
4795 * up by our possession of the filter table lock). In that case, it
4796 * will set rule->filter_id to EFX_ARFS_FILTER_ID_PENDING, meaning that
4797 * the rule is not removed by efx_rps_hash_del() below.
4798 */
4799 if (ret)
4800 ret = efx_ef10_filter_remove_internal(efx, 1U << spec->priority,
4801 filter_idx, true) == 0;
4802 /* While we can't safely dereference rule (we dropped the lock), we can
4803 * still test it for NULL.
4804 */
4805 if (ret && rule) {
4806 /* Expiring, so remove entry from ARFS table */
4807 spin_lock_bh(&efx->rps_hash_lock);
4808 efx_rps_hash_del(efx, &saved_spec);
4809 spin_unlock_bh(&efx->rps_hash_lock);
4810 }
4811 out_unlock:
4812 up_write(&table->lock);
4813 up_read(&efx->filter_sem);
4814 return ret;
4815 }
4816
4817 #endif /* CONFIG_RFS_ACCEL */
4818
4819 static int efx_ef10_filter_match_flags_from_mcdi(bool encap, u32 mcdi_flags)
4820 {
4821 int match_flags = 0;
4822
4823 #define MAP_FLAG(gen_flag, mcdi_field) do { \
4824 u32 old_mcdi_flags = mcdi_flags; \
4825 mcdi_flags &= ~(1 << MC_CMD_FILTER_OP_EXT_IN_MATCH_ ## \
4826 mcdi_field ## _LBN); \
4827 if (mcdi_flags != old_mcdi_flags) \
4828 match_flags |= EFX_FILTER_MATCH_ ## gen_flag; \
4829 } while (0)
4830
4831 if (encap) {
4832 /* encap filters must specify encap type */
4833 match_flags |= EFX_FILTER_MATCH_ENCAP_TYPE;
4834 /* and imply ethertype and ip proto */
4835 mcdi_flags &=
4836 ~(1 << MC_CMD_FILTER_OP_EXT_IN_MATCH_IP_PROTO_LBN);
4837 mcdi_flags &=
4838 ~(1 << MC_CMD_FILTER_OP_EXT_IN_MATCH_ETHER_TYPE_LBN);
4839 /* VLAN tags refer to the outer packet */
4840 MAP_FLAG(INNER_VID, INNER_VLAN);
4841 MAP_FLAG(OUTER_VID, OUTER_VLAN);
4842 /* everything else refers to the inner packet */
4843 MAP_FLAG(LOC_MAC_IG, IFRM_UNKNOWN_UCAST_DST);
4844 MAP_FLAG(LOC_MAC_IG, IFRM_UNKNOWN_MCAST_DST);
4845 MAP_FLAG(REM_HOST, IFRM_SRC_IP);
4846 MAP_FLAG(LOC_HOST, IFRM_DST_IP);
4847 MAP_FLAG(REM_MAC, IFRM_SRC_MAC);
4848 MAP_FLAG(REM_PORT, IFRM_SRC_PORT);
4849 MAP_FLAG(LOC_MAC, IFRM_DST_MAC);
4850 MAP_FLAG(LOC_PORT, IFRM_DST_PORT);
4851 MAP_FLAG(ETHER_TYPE, IFRM_ETHER_TYPE);
4852 MAP_FLAG(IP_PROTO, IFRM_IP_PROTO);
4853 } else {
4854 MAP_FLAG(LOC_MAC_IG, UNKNOWN_UCAST_DST);
4855 MAP_FLAG(LOC_MAC_IG, UNKNOWN_MCAST_DST);
4856 MAP_FLAG(REM_HOST, SRC_IP);
4857 MAP_FLAG(LOC_HOST, DST_IP);
4858 MAP_FLAG(REM_MAC, SRC_MAC);
4859 MAP_FLAG(REM_PORT, SRC_PORT);
4860 MAP_FLAG(LOC_MAC, DST_MAC);
4861 MAP_FLAG(LOC_PORT, DST_PORT);
4862 MAP_FLAG(ETHER_TYPE, ETHER_TYPE);
4863 MAP_FLAG(INNER_VID, INNER_VLAN);
4864 MAP_FLAG(OUTER_VID, OUTER_VLAN);
4865 MAP_FLAG(IP_PROTO, IP_PROTO);
4866 }
4867 #undef MAP_FLAG
4868
4869 /* Did we map them all? */
4870 if (mcdi_flags)
4871 return -EINVAL;
4872
4873 return match_flags;
4874 }
4875
4876 static void efx_ef10_filter_cleanup_vlans(struct efx_nic *efx)
4877 {
4878 struct efx_ef10_filter_table *table = efx->filter_state;
4879 struct efx_ef10_filter_vlan *vlan, *next_vlan;
4880
4881 /* See comment in efx_ef10_filter_table_remove() */
4882 if (!efx_rwsem_assert_write_locked(&efx->filter_sem))
4883 return;
4884
4885 if (!table)
4886 return;
4887
4888 list_for_each_entry_safe(vlan, next_vlan, &table->vlan_list, list)
4889 efx_ef10_filter_del_vlan_internal(efx, vlan);
4890 }
4891
4892 static bool efx_ef10_filter_match_supported(struct efx_ef10_filter_table *table,
4893 bool encap,
4894 enum efx_filter_match_flags match_flags)
4895 {
4896 unsigned int match_pri;
4897 int mf;
4898
4899 for (match_pri = 0;
4900 match_pri < table->rx_match_count;
4901 match_pri++) {
4902 mf = efx_ef10_filter_match_flags_from_mcdi(encap,
4903 table->rx_match_mcdi_flags[match_pri]);
4904 if (mf == match_flags)
4905 return true;
4906 }
4907
4908 return false;
4909 }
4910
4911 static int
4912 efx_ef10_filter_table_probe_matches(struct efx_nic *efx,
4913 struct efx_ef10_filter_table *table,
4914 bool encap)
4915 {
4916 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PARSER_DISP_INFO_IN_LEN);
4917 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PARSER_DISP_INFO_OUT_LENMAX);
4918 unsigned int pd_match_pri, pd_match_count;
4919 size_t outlen;
4920 int rc;
4921
4922 /* Find out which RX filter types are supported, and their priorities */
4923 MCDI_SET_DWORD(inbuf, GET_PARSER_DISP_INFO_IN_OP,
4924 encap ?
4925 MC_CMD_GET_PARSER_DISP_INFO_IN_OP_GET_SUPPORTED_ENCAP_RX_MATCHES :
4926 MC_CMD_GET_PARSER_DISP_INFO_IN_OP_GET_SUPPORTED_RX_MATCHES);
4927 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PARSER_DISP_INFO,
4928 inbuf, sizeof(inbuf), outbuf, sizeof(outbuf),
4929 &outlen);
4930 if (rc)
4931 return rc;
4932
4933 pd_match_count = MCDI_VAR_ARRAY_LEN(
4934 outlen, GET_PARSER_DISP_INFO_OUT_SUPPORTED_MATCHES);
4935
4936 for (pd_match_pri = 0; pd_match_pri < pd_match_count; pd_match_pri++) {
4937 u32 mcdi_flags =
4938 MCDI_ARRAY_DWORD(
4939 outbuf,
4940 GET_PARSER_DISP_INFO_OUT_SUPPORTED_MATCHES,
4941 pd_match_pri);
4942 rc = efx_ef10_filter_match_flags_from_mcdi(encap, mcdi_flags);
4943 if (rc < 0) {
4944 netif_dbg(efx, probe, efx->net_dev,
4945 "%s: fw flags %#x pri %u not supported in driver\n",
4946 __func__, mcdi_flags, pd_match_pri);
4947 } else {
4948 netif_dbg(efx, probe, efx->net_dev,
4949 "%s: fw flags %#x pri %u supported as driver flags %#x pri %u\n",
4950 __func__, mcdi_flags, pd_match_pri,
4951 rc, table->rx_match_count);
4952 table->rx_match_mcdi_flags[table->rx_match_count] = mcdi_flags;
4953 table->rx_match_count++;
4954 }
4955 }
4956
4957 return 0;
4958 }
4959
4960 static int efx_ef10_filter_table_probe(struct efx_nic *efx)
4961 {
4962 struct efx_ef10_nic_data *nic_data = efx->nic_data;
4963 struct net_device *net_dev = efx->net_dev;
4964 struct efx_ef10_filter_table *table;
4965 struct efx_ef10_vlan *vlan;
4966 int rc;
4967
4968 if (!efx_rwsem_assert_write_locked(&efx->filter_sem))
4969 return -EINVAL;
4970
4971 if (efx->filter_state) /* already probed */
4972 return 0;
4973
4974 table = kzalloc(sizeof(*table), GFP_KERNEL);
4975 if (!table)
4976 return -ENOMEM;
4977
4978 table->rx_match_count = 0;
4979 rc = efx_ef10_filter_table_probe_matches(efx, table, false);
4980 if (rc)
4981 goto fail;
4982 if (nic_data->datapath_caps &
4983 (1 << MC_CMD_GET_CAPABILITIES_OUT_VXLAN_NVGRE_LBN))
4984 rc = efx_ef10_filter_table_probe_matches(efx, table, true);
4985 if (rc)
4986 goto fail;
4987 if ((efx_supported_features(efx) & NETIF_F_HW_VLAN_CTAG_FILTER) &&
4988 !(efx_ef10_filter_match_supported(table, false,
4989 (EFX_FILTER_MATCH_OUTER_VID | EFX_FILTER_MATCH_LOC_MAC)) &&
4990 efx_ef10_filter_match_supported(table, false,
4991 (EFX_FILTER_MATCH_OUTER_VID | EFX_FILTER_MATCH_LOC_MAC_IG)))) {
4992 netif_info(efx, probe, net_dev,
4993 "VLAN filters are not supported in this firmware variant\n");
4994 net_dev->features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
4995 efx->fixed_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
4996 net_dev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
4997 }
4998
4999 table->entry = vzalloc(array_size(HUNT_FILTER_TBL_ROWS,
5000 sizeof(*table->entry)));
5001 if (!table->entry) {
5002 rc = -ENOMEM;
5003 goto fail;
5004 }
5005
5006 table->mc_promisc_last = false;
5007 table->vlan_filter =
5008 !!(efx->net_dev->features & NETIF_F_HW_VLAN_CTAG_FILTER);
5009 INIT_LIST_HEAD(&table->vlan_list);
5010 init_rwsem(&table->lock);
5011
5012 efx->filter_state = table;
5013
5014 list_for_each_entry(vlan, &nic_data->vlan_list, list) {
5015 rc = efx_ef10_filter_add_vlan(efx, vlan->vid);
5016 if (rc)
5017 goto fail_add_vlan;
5018 }
5019
5020 return 0;
5021
5022 fail_add_vlan:
5023 efx_ef10_filter_cleanup_vlans(efx);
5024 efx->filter_state = NULL;
5025 fail:
5026 kfree(table);
5027 return rc;
5028 }
5029
5030 /* Caller must hold efx->filter_sem for read if race against
5031 * efx_ef10_filter_table_remove() is possible
5032 */
5033 static void efx_ef10_filter_table_restore(struct efx_nic *efx)
5034 {
5035 struct efx_ef10_filter_table *table = efx->filter_state;
5036 struct efx_ef10_nic_data *nic_data = efx->nic_data;
5037 unsigned int invalid_filters = 0, failed = 0;
5038 struct efx_ef10_filter_vlan *vlan;
5039 struct efx_filter_spec *spec;
5040 struct efx_rss_context *ctx;
5041 unsigned int filter_idx;
5042 u32 mcdi_flags;
5043 int match_pri;
5044 int rc, i;
5045
5046 WARN_ON(!rwsem_is_locked(&efx->filter_sem));
5047
5048 if (!nic_data->must_restore_filters)
5049 return;
5050
5051 if (!table)
5052 return;
5053
5054 down_write(&table->lock);
5055 mutex_lock(&efx->rss_lock);
5056
5057 for (filter_idx = 0; filter_idx < HUNT_FILTER_TBL_ROWS; filter_idx++) {
5058 spec = efx_ef10_filter_entry_spec(table, filter_idx);
5059 if (!spec)
5060 continue;
5061
5062 mcdi_flags = efx_ef10_filter_mcdi_flags_from_spec(spec);
5063 match_pri = 0;
5064 while (match_pri < table->rx_match_count &&
5065 table->rx_match_mcdi_flags[match_pri] != mcdi_flags)
5066 ++match_pri;
5067 if (match_pri >= table->rx_match_count) {
5068 invalid_filters++;
5069 goto not_restored;
5070 }
5071 if (spec->rss_context)
5072 ctx = efx_find_rss_context_entry(efx, spec->rss_context);
5073 else
5074 ctx = &efx->rss_context;
5075 if (spec->flags & EFX_FILTER_FLAG_RX_RSS) {
5076 if (!ctx) {
5077 netif_warn(efx, drv, efx->net_dev,
5078 "Warning: unable to restore a filter with nonexistent RSS context %u.\n",
5079 spec->rss_context);
5080 invalid_filters++;
5081 goto not_restored;
5082 }
5083 if (ctx->context_id == EFX_EF10_RSS_CONTEXT_INVALID) {
5084 netif_warn(efx, drv, efx->net_dev,
5085 "Warning: unable to restore a filter with RSS context %u as it was not created.\n",
5086 spec->rss_context);
5087 invalid_filters++;
5088 goto not_restored;
5089 }
5090 }
5091
5092 rc = efx_ef10_filter_push(efx, spec,
5093 &table->entry[filter_idx].handle,
5094 ctx, false);
5095 if (rc)
5096 failed++;
5097
5098 if (rc) {
5099 not_restored:
5100 list_for_each_entry(vlan, &table->vlan_list, list)
5101 for (i = 0; i < EFX_EF10_NUM_DEFAULT_FILTERS; ++i)
5102 if (vlan->default_filters[i] == filter_idx)
5103 vlan->default_filters[i] =
5104 EFX_EF10_FILTER_ID_INVALID;
5105
5106 kfree(spec);
5107 efx_ef10_filter_set_entry(table, filter_idx, NULL, 0);
5108 }
5109 }
5110
5111 mutex_unlock(&efx->rss_lock);
5112 up_write(&table->lock);
5113
5114 /* This can happen validly if the MC's capabilities have changed, so
5115 * is not an error.
5116 */
5117 if (invalid_filters)
5118 netif_dbg(efx, drv, efx->net_dev,
5119 "Did not restore %u filters that are now unsupported.\n",
5120 invalid_filters);
5121
5122 if (failed)
5123 netif_err(efx, hw, efx->net_dev,
5124 "unable to restore %u filters\n", failed);
5125 else
5126 nic_data->must_restore_filters = false;
5127 }
5128
5129 static void efx_ef10_filter_table_remove(struct efx_nic *efx)
5130 {
5131 struct efx_ef10_filter_table *table = efx->filter_state;
5132 MCDI_DECLARE_BUF(inbuf, MC_CMD_FILTER_OP_EXT_IN_LEN);
5133 struct efx_filter_spec *spec;
5134 unsigned int filter_idx;
5135 int rc;
5136
5137 efx_ef10_filter_cleanup_vlans(efx);
5138 efx->filter_state = NULL;
5139 /* If we were called without locking, then it's not safe to free
5140 * the table as others might be using it. So we just WARN, leak
5141 * the memory, and potentially get an inconsistent filter table
5142 * state.
5143 * This should never actually happen.
5144 */
5145 if (!efx_rwsem_assert_write_locked(&efx->filter_sem))
5146 return;
5147
5148 if (!table)
5149 return;
5150
5151 for (filter_idx = 0; filter_idx < HUNT_FILTER_TBL_ROWS; filter_idx++) {
5152 spec = efx_ef10_filter_entry_spec(table, filter_idx);
5153 if (!spec)
5154 continue;
5155
5156 MCDI_SET_DWORD(inbuf, FILTER_OP_IN_OP,
5157 efx_ef10_filter_is_exclusive(spec) ?
5158 MC_CMD_FILTER_OP_IN_OP_REMOVE :
5159 MC_CMD_FILTER_OP_IN_OP_UNSUBSCRIBE);
5160 MCDI_SET_QWORD(inbuf, FILTER_OP_IN_HANDLE,
5161 table->entry[filter_idx].handle);
5162 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_FILTER_OP, inbuf,
5163 sizeof(inbuf), NULL, 0, NULL);
5164 if (rc)
5165 netif_info(efx, drv, efx->net_dev,
5166 "%s: filter %04x remove failed\n",
5167 __func__, filter_idx);
5168 kfree(spec);
5169 }
5170
5171 vfree(table->entry);
5172 kfree(table);
5173 }
5174
5175 static void efx_ef10_filter_mark_one_old(struct efx_nic *efx, uint16_t *id)
5176 {
5177 struct efx_ef10_filter_table *table = efx->filter_state;
5178 unsigned int filter_idx;
5179
5180 efx_rwsem_assert_write_locked(&table->lock);
5181
5182 if (*id != EFX_EF10_FILTER_ID_INVALID) {
5183 filter_idx = efx_ef10_filter_get_unsafe_id(*id);
5184 if (!table->entry[filter_idx].spec)
5185 netif_dbg(efx, drv, efx->net_dev,
5186 "marked null spec old %04x:%04x\n", *id,
5187 filter_idx);
5188 table->entry[filter_idx].spec |= EFX_EF10_FILTER_FLAG_AUTO_OLD;
5189 *id = EFX_EF10_FILTER_ID_INVALID;
5190 }
5191 }
5192
5193 /* Mark old per-VLAN filters that may need to be removed */
5194 static void _efx_ef10_filter_vlan_mark_old(struct efx_nic *efx,
5195 struct efx_ef10_filter_vlan *vlan)
5196 {
5197 struct efx_ef10_filter_table *table = efx->filter_state;
5198 unsigned int i;
5199
5200 for (i = 0; i < table->dev_uc_count; i++)
5201 efx_ef10_filter_mark_one_old(efx, &vlan->uc[i]);
5202 for (i = 0; i < table->dev_mc_count; i++)
5203 efx_ef10_filter_mark_one_old(efx, &vlan->mc[i]);
5204 for (i = 0; i < EFX_EF10_NUM_DEFAULT_FILTERS; i++)
5205 efx_ef10_filter_mark_one_old(efx, &vlan->default_filters[i]);
5206 }
5207
5208 /* Mark old filters that may need to be removed.
5209 * Caller must hold efx->filter_sem for read if race against
5210 * efx_ef10_filter_table_remove() is possible
5211 */
5212 static void efx_ef10_filter_mark_old(struct efx_nic *efx)
5213 {
5214 struct efx_ef10_filter_table *table = efx->filter_state;
5215 struct efx_ef10_filter_vlan *vlan;
5216
5217 down_write(&table->lock);
5218 list_for_each_entry(vlan, &table->vlan_list, list)
5219 _efx_ef10_filter_vlan_mark_old(efx, vlan);
5220 up_write(&table->lock);
5221 }
5222
5223 static void efx_ef10_filter_uc_addr_list(struct efx_nic *efx)
5224 {
5225 struct efx_ef10_filter_table *table = efx->filter_state;
5226 struct net_device *net_dev = efx->net_dev;
5227 struct netdev_hw_addr *uc;
5228 unsigned int i;
5229
5230 table->uc_promisc = !!(net_dev->flags & IFF_PROMISC);
5231 ether_addr_copy(table->dev_uc_list[0].addr, net_dev->dev_addr);
5232 i = 1;
5233 netdev_for_each_uc_addr(uc, net_dev) {
5234 if (i >= EFX_EF10_FILTER_DEV_UC_MAX) {
5235 table->uc_promisc = true;
5236 break;
5237 }
5238 ether_addr_copy(table->dev_uc_list[i].addr, uc->addr);
5239 i++;
5240 }
5241
5242 table->dev_uc_count = i;
5243 }
5244
5245 static void efx_ef10_filter_mc_addr_list(struct efx_nic *efx)
5246 {
5247 struct efx_ef10_filter_table *table = efx->filter_state;
5248 struct net_device *net_dev = efx->net_dev;
5249 struct netdev_hw_addr *mc;
5250 unsigned int i;
5251
5252 table->mc_overflow = false;
5253 table->mc_promisc = !!(net_dev->flags & (IFF_PROMISC | IFF_ALLMULTI));
5254
5255 i = 0;
5256 netdev_for_each_mc_addr(mc, net_dev) {
5257 if (i >= EFX_EF10_FILTER_DEV_MC_MAX) {
5258 table->mc_promisc = true;
5259 table->mc_overflow = true;
5260 break;
5261 }
5262 ether_addr_copy(table->dev_mc_list[i].addr, mc->addr);
5263 i++;
5264 }
5265
5266 table->dev_mc_count = i;
5267 }
5268
5269 static int efx_ef10_filter_insert_addr_list(struct efx_nic *efx,
5270 struct efx_ef10_filter_vlan *vlan,
5271 bool multicast, bool rollback)
5272 {
5273 struct efx_ef10_filter_table *table = efx->filter_state;
5274 struct efx_ef10_dev_addr *addr_list;
5275 enum efx_filter_flags filter_flags;
5276 struct efx_filter_spec spec;
5277 u8 baddr[ETH_ALEN];
5278 unsigned int i, j;
5279 int addr_count;
5280 u16 *ids;
5281 int rc;
5282
5283 if (multicast) {
5284 addr_list = table->dev_mc_list;
5285 addr_count = table->dev_mc_count;
5286 ids = vlan->mc;
5287 } else {
5288 addr_list = table->dev_uc_list;
5289 addr_count = table->dev_uc_count;
5290 ids = vlan->uc;
5291 }
5292
5293 filter_flags = efx_rss_active(&efx->rss_context) ? EFX_FILTER_FLAG_RX_RSS : 0;
5294
5295 /* Insert/renew filters */
5296 for (i = 0; i < addr_count; i++) {
5297 EFX_WARN_ON_PARANOID(ids[i] != EFX_EF10_FILTER_ID_INVALID);
5298 efx_filter_init_rx(&spec, EFX_FILTER_PRI_AUTO, filter_flags, 0);
5299 efx_filter_set_eth_local(&spec, vlan->vid, addr_list[i].addr);
5300 rc = efx_ef10_filter_insert_locked(efx, &spec, true);
5301 if (rc < 0) {
5302 if (rollback) {
5303 netif_info(efx, drv, efx->net_dev,
5304 "efx_ef10_filter_insert failed rc=%d\n",
5305 rc);
5306 /* Fall back to promiscuous */
5307 for (j = 0; j < i; j++) {
5308 efx_ef10_filter_remove_unsafe(
5309 efx, EFX_FILTER_PRI_AUTO,
5310 ids[j]);
5311 ids[j] = EFX_EF10_FILTER_ID_INVALID;
5312 }
5313 return rc;
5314 } else {
5315 /* keep invalid ID, and carry on */
5316 }
5317 } else {
5318 ids[i] = efx_ef10_filter_get_unsafe_id(rc);
5319 }
5320 }
5321
5322 if (multicast && rollback) {
5323 /* Also need an Ethernet broadcast filter */
5324 EFX_WARN_ON_PARANOID(vlan->default_filters[EFX_EF10_BCAST] !=
5325 EFX_EF10_FILTER_ID_INVALID);
5326 efx_filter_init_rx(&spec, EFX_FILTER_PRI_AUTO, filter_flags, 0);
5327 eth_broadcast_addr(baddr);
5328 efx_filter_set_eth_local(&spec, vlan->vid, baddr);
5329 rc = efx_ef10_filter_insert_locked(efx, &spec, true);
5330 if (rc < 0) {
5331 netif_warn(efx, drv, efx->net_dev,
5332 "Broadcast filter insert failed rc=%d\n", rc);
5333 /* Fall back to promiscuous */
5334 for (j = 0; j < i; j++) {
5335 efx_ef10_filter_remove_unsafe(
5336 efx, EFX_FILTER_PRI_AUTO,
5337 ids[j]);
5338 ids[j] = EFX_EF10_FILTER_ID_INVALID;
5339 }
5340 return rc;
5341 } else {
5342 vlan->default_filters[EFX_EF10_BCAST] =
5343 efx_ef10_filter_get_unsafe_id(rc);
5344 }
5345 }
5346
5347 return 0;
5348 }
5349
5350 static int efx_ef10_filter_insert_def(struct efx_nic *efx,
5351 struct efx_ef10_filter_vlan *vlan,
5352 enum efx_encap_type encap_type,
5353 bool multicast, bool rollback)
5354 {
5355 struct efx_ef10_nic_data *nic_data = efx->nic_data;
5356 enum efx_filter_flags filter_flags;
5357 struct efx_filter_spec spec;
5358 u8 baddr[ETH_ALEN];
5359 int rc;
5360 u16 *id;
5361
5362 filter_flags = efx_rss_active(&efx->rss_context) ? EFX_FILTER_FLAG_RX_RSS : 0;
5363
5364 efx_filter_init_rx(&spec, EFX_FILTER_PRI_AUTO, filter_flags, 0);
5365
5366 if (multicast)
5367 efx_filter_set_mc_def(&spec);
5368 else
5369 efx_filter_set_uc_def(&spec);
5370
5371 if (encap_type) {
5372 if (nic_data->datapath_caps &
5373 (1 << MC_CMD_GET_CAPABILITIES_OUT_VXLAN_NVGRE_LBN))
5374 efx_filter_set_encap_type(&spec, encap_type);
5375 else
5376 /* don't insert encap filters on non-supporting
5377 * platforms. ID will be left as INVALID.
5378 */
5379 return 0;
5380 }
5381
5382 if (vlan->vid != EFX_FILTER_VID_UNSPEC)
5383 efx_filter_set_eth_local(&spec, vlan->vid, NULL);
5384
5385 rc = efx_ef10_filter_insert_locked(efx, &spec, true);
5386 if (rc < 0) {
5387 const char *um = multicast ? "Multicast" : "Unicast";
5388 const char *encap_name = "";
5389 const char *encap_ipv = "";
5390
5391 if ((encap_type & EFX_ENCAP_TYPES_MASK) ==
5392 EFX_ENCAP_TYPE_VXLAN)
5393 encap_name = "VXLAN ";
5394 else if ((encap_type & EFX_ENCAP_TYPES_MASK) ==
5395 EFX_ENCAP_TYPE_NVGRE)
5396 encap_name = "NVGRE ";
5397 else if ((encap_type & EFX_ENCAP_TYPES_MASK) ==
5398 EFX_ENCAP_TYPE_GENEVE)
5399 encap_name = "GENEVE ";
5400 if (encap_type & EFX_ENCAP_FLAG_IPV6)
5401 encap_ipv = "IPv6 ";
5402 else if (encap_type)
5403 encap_ipv = "IPv4 ";
5404
5405 /* unprivileged functions can't insert mismatch filters
5406 * for encapsulated or unicast traffic, so downgrade
5407 * those warnings to debug.
5408 */
5409 netif_cond_dbg(efx, drv, efx->net_dev,
5410 rc == -EPERM && (encap_type || !multicast), warn,
5411 "%s%s%s mismatch filter insert failed rc=%d\n",
5412 encap_name, encap_ipv, um, rc);
5413 } else if (multicast) {
5414 /* mapping from encap types to default filter IDs (multicast) */
5415 static enum efx_ef10_default_filters map[] = {
5416 [EFX_ENCAP_TYPE_NONE] = EFX_EF10_MCDEF,
5417 [EFX_ENCAP_TYPE_VXLAN] = EFX_EF10_VXLAN4_MCDEF,
5418 [EFX_ENCAP_TYPE_NVGRE] = EFX_EF10_NVGRE4_MCDEF,
5419 [EFX_ENCAP_TYPE_GENEVE] = EFX_EF10_GENEVE4_MCDEF,
5420 [EFX_ENCAP_TYPE_VXLAN | EFX_ENCAP_FLAG_IPV6] =
5421 EFX_EF10_VXLAN6_MCDEF,
5422 [EFX_ENCAP_TYPE_NVGRE | EFX_ENCAP_FLAG_IPV6] =
5423 EFX_EF10_NVGRE6_MCDEF,
5424 [EFX_ENCAP_TYPE_GENEVE | EFX_ENCAP_FLAG_IPV6] =
5425 EFX_EF10_GENEVE6_MCDEF,
5426 };
5427
5428 /* quick bounds check (BCAST result impossible) */
5429 BUILD_BUG_ON(EFX_EF10_BCAST != 0);
5430 if (encap_type >= ARRAY_SIZE(map) || map[encap_type] == 0) {
5431 WARN_ON(1);
5432 return -EINVAL;
5433 }
5434 /* then follow map */
5435 id = &vlan->default_filters[map[encap_type]];
5436
5437 EFX_WARN_ON_PARANOID(*id != EFX_EF10_FILTER_ID_INVALID);
5438 *id = efx_ef10_filter_get_unsafe_id(rc);
5439 if (!nic_data->workaround_26807 && !encap_type) {
5440 /* Also need an Ethernet broadcast filter */
5441 efx_filter_init_rx(&spec, EFX_FILTER_PRI_AUTO,
5442 filter_flags, 0);
5443 eth_broadcast_addr(baddr);
5444 efx_filter_set_eth_local(&spec, vlan->vid, baddr);
5445 rc = efx_ef10_filter_insert_locked(efx, &spec, true);
5446 if (rc < 0) {
5447 netif_warn(efx, drv, efx->net_dev,
5448 "Broadcast filter insert failed rc=%d\n",
5449 rc);
5450 if (rollback) {
5451 /* Roll back the mc_def filter */
5452 efx_ef10_filter_remove_unsafe(
5453 efx, EFX_FILTER_PRI_AUTO,
5454 *id);
5455 *id = EFX_EF10_FILTER_ID_INVALID;
5456 return rc;
5457 }
5458 } else {
5459 EFX_WARN_ON_PARANOID(
5460 vlan->default_filters[EFX_EF10_BCAST] !=
5461 EFX_EF10_FILTER_ID_INVALID);
5462 vlan->default_filters[EFX_EF10_BCAST] =
5463 efx_ef10_filter_get_unsafe_id(rc);
5464 }
5465 }
5466 rc = 0;
5467 } else {
5468 /* mapping from encap types to default filter IDs (unicast) */
5469 static enum efx_ef10_default_filters map[] = {
5470 [EFX_ENCAP_TYPE_NONE] = EFX_EF10_UCDEF,
5471 [EFX_ENCAP_TYPE_VXLAN] = EFX_EF10_VXLAN4_UCDEF,
5472 [EFX_ENCAP_TYPE_NVGRE] = EFX_EF10_NVGRE4_UCDEF,
5473 [EFX_ENCAP_TYPE_GENEVE] = EFX_EF10_GENEVE4_UCDEF,
5474 [EFX_ENCAP_TYPE_VXLAN | EFX_ENCAP_FLAG_IPV6] =
5475 EFX_EF10_VXLAN6_UCDEF,
5476 [EFX_ENCAP_TYPE_NVGRE | EFX_ENCAP_FLAG_IPV6] =
5477 EFX_EF10_NVGRE6_UCDEF,
5478 [EFX_ENCAP_TYPE_GENEVE | EFX_ENCAP_FLAG_IPV6] =
5479 EFX_EF10_GENEVE6_UCDEF,
5480 };
5481
5482 /* quick bounds check (BCAST result impossible) */
5483 BUILD_BUG_ON(EFX_EF10_BCAST != 0);
5484 if (encap_type >= ARRAY_SIZE(map) || map[encap_type] == 0) {
5485 WARN_ON(1);
5486 return -EINVAL;
5487 }
5488 /* then follow map */
5489 id = &vlan->default_filters[map[encap_type]];
5490 EFX_WARN_ON_PARANOID(*id != EFX_EF10_FILTER_ID_INVALID);
5491 *id = rc;
5492 rc = 0;
5493 }
5494 return rc;
5495 }
5496
5497 /* Remove filters that weren't renewed. */
5498 static void efx_ef10_filter_remove_old(struct efx_nic *efx)
5499 {
5500 struct efx_ef10_filter_table *table = efx->filter_state;
5501 int remove_failed = 0;
5502 int remove_noent = 0;
5503 int rc;
5504 int i;
5505
5506 down_write(&table->lock);
5507 for (i = 0; i < HUNT_FILTER_TBL_ROWS; i++) {
5508 if (READ_ONCE(table->entry[i].spec) &
5509 EFX_EF10_FILTER_FLAG_AUTO_OLD) {
5510 rc = efx_ef10_filter_remove_internal(efx,
5511 1U << EFX_FILTER_PRI_AUTO, i, true);
5512 if (rc == -ENOENT)
5513 remove_noent++;
5514 else if (rc)
5515 remove_failed++;
5516 }
5517 }
5518 up_write(&table->lock);
5519
5520 if (remove_failed)
5521 netif_info(efx, drv, efx->net_dev,
5522 "%s: failed to remove %d filters\n",
5523 __func__, remove_failed);
5524 if (remove_noent)
5525 netif_info(efx, drv, efx->net_dev,
5526 "%s: failed to remove %d non-existent filters\n",
5527 __func__, remove_noent);
5528 }
5529
5530 static int efx_ef10_vport_set_mac_address(struct efx_nic *efx)
5531 {
5532 struct efx_ef10_nic_data *nic_data = efx->nic_data;
5533 u8 mac_old[ETH_ALEN];
5534 int rc, rc2;
5535
5536 /* Only reconfigure a PF-created vport */
5537 if (is_zero_ether_addr(nic_data->vport_mac))
5538 return 0;
5539
5540 efx_device_detach_sync(efx);
5541 efx_net_stop(efx->net_dev);
5542 down_write(&efx->filter_sem);
5543 efx_ef10_filter_table_remove(efx);
5544 up_write(&efx->filter_sem);
5545
5546 rc = efx_ef10_vadaptor_free(efx, nic_data->vport_id);
5547 if (rc)
5548 goto restore_filters;
5549
5550 ether_addr_copy(mac_old, nic_data->vport_mac);
5551 rc = efx_ef10_vport_del_mac(efx, nic_data->vport_id,
5552 nic_data->vport_mac);
5553 if (rc)
5554 goto restore_vadaptor;
5555
5556 rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id,
5557 efx->net_dev->dev_addr);
5558 if (!rc) {
5559 ether_addr_copy(nic_data->vport_mac, efx->net_dev->dev_addr);
5560 } else {
5561 rc2 = efx_ef10_vport_add_mac(efx, nic_data->vport_id, mac_old);
5562 if (rc2) {
5563 /* Failed to add original MAC, so clear vport_mac */
5564 eth_zero_addr(nic_data->vport_mac);
5565 goto reset_nic;
5566 }
5567 }
5568
5569 restore_vadaptor:
5570 rc2 = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
5571 if (rc2)
5572 goto reset_nic;
5573 restore_filters:
5574 down_write(&efx->filter_sem);
5575 rc2 = efx_ef10_filter_table_probe(efx);
5576 up_write(&efx->filter_sem);
5577 if (rc2)
5578 goto reset_nic;
5579
5580 rc2 = efx_net_open(efx->net_dev);
5581 if (rc2)
5582 goto reset_nic;
5583
5584 efx_device_attach_if_not_resetting(efx);
5585
5586 return rc;
5587
5588 reset_nic:
5589 netif_err(efx, drv, efx->net_dev,
5590 "Failed to restore when changing MAC address - scheduling reset\n");
5591 efx_schedule_reset(efx, RESET_TYPE_DATAPATH);
5592
5593 return rc ? rc : rc2;
5594 }
5595
5596 /* Caller must hold efx->filter_sem for read if race against
5597 * efx_ef10_filter_table_remove() is possible
5598 */
5599 static void efx_ef10_filter_vlan_sync_rx_mode(struct efx_nic *efx,
5600 struct efx_ef10_filter_vlan *vlan)
5601 {
5602 struct efx_ef10_filter_table *table = efx->filter_state;
5603 struct efx_ef10_nic_data *nic_data = efx->nic_data;
5604
5605 /* Do not install unspecified VID if VLAN filtering is enabled.
5606 * Do not install all specified VIDs if VLAN filtering is disabled.
5607 */
5608 if ((vlan->vid == EFX_FILTER_VID_UNSPEC) == table->vlan_filter)
5609 return;
5610
5611 /* Insert/renew unicast filters */
5612 if (table->uc_promisc) {
5613 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_NONE,
5614 false, false);
5615 efx_ef10_filter_insert_addr_list(efx, vlan, false, false);
5616 } else {
5617 /* If any of the filters failed to insert, fall back to
5618 * promiscuous mode - add in the uc_def filter. But keep
5619 * our individual unicast filters.
5620 */
5621 if (efx_ef10_filter_insert_addr_list(efx, vlan, false, false))
5622 efx_ef10_filter_insert_def(efx, vlan,
5623 EFX_ENCAP_TYPE_NONE,
5624 false, false);
5625 }
5626 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_VXLAN,
5627 false, false);
5628 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_VXLAN |
5629 EFX_ENCAP_FLAG_IPV6,
5630 false, false);
5631 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_NVGRE,
5632 false, false);
5633 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_NVGRE |
5634 EFX_ENCAP_FLAG_IPV6,
5635 false, false);
5636 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_GENEVE,
5637 false, false);
5638 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_GENEVE |
5639 EFX_ENCAP_FLAG_IPV6,
5640 false, false);
5641
5642 /* Insert/renew multicast filters */
5643 /* If changing promiscuous state with cascaded multicast filters, remove
5644 * old filters first, so that packets are dropped rather than duplicated
5645 */
5646 if (nic_data->workaround_26807 &&
5647 table->mc_promisc_last != table->mc_promisc)
5648 efx_ef10_filter_remove_old(efx);
5649 if (table->mc_promisc) {
5650 if (nic_data->workaround_26807) {
5651 /* If we failed to insert promiscuous filters, rollback
5652 * and fall back to individual multicast filters
5653 */
5654 if (efx_ef10_filter_insert_def(efx, vlan,
5655 EFX_ENCAP_TYPE_NONE,
5656 true, true)) {
5657 /* Changing promisc state, so remove old filters */
5658 efx_ef10_filter_remove_old(efx);
5659 efx_ef10_filter_insert_addr_list(efx, vlan,
5660 true, false);
5661 }
5662 } else {
5663 /* If we failed to insert promiscuous filters, don't
5664 * rollback. Regardless, also insert the mc_list,
5665 * unless it's incomplete due to overflow
5666 */
5667 efx_ef10_filter_insert_def(efx, vlan,
5668 EFX_ENCAP_TYPE_NONE,
5669 true, false);
5670 if (!table->mc_overflow)
5671 efx_ef10_filter_insert_addr_list(efx, vlan,
5672 true, false);
5673 }
5674 } else {
5675 /* If any filters failed to insert, rollback and fall back to
5676 * promiscuous mode - mc_def filter and maybe broadcast. If
5677 * that fails, roll back again and insert as many of our
5678 * individual multicast filters as we can.
5679 */
5680 if (efx_ef10_filter_insert_addr_list(efx, vlan, true, true)) {
5681 /* Changing promisc state, so remove old filters */
5682 if (nic_data->workaround_26807)
5683 efx_ef10_filter_remove_old(efx);
5684 if (efx_ef10_filter_insert_def(efx, vlan,
5685 EFX_ENCAP_TYPE_NONE,
5686 true, true))
5687 efx_ef10_filter_insert_addr_list(efx, vlan,
5688 true, false);
5689 }
5690 }
5691 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_VXLAN,
5692 true, false);
5693 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_VXLAN |
5694 EFX_ENCAP_FLAG_IPV6,
5695 true, false);
5696 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_NVGRE,
5697 true, false);
5698 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_NVGRE |
5699 EFX_ENCAP_FLAG_IPV6,
5700 true, false);
5701 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_GENEVE,
5702 true, false);
5703 efx_ef10_filter_insert_def(efx, vlan, EFX_ENCAP_TYPE_GENEVE |
5704 EFX_ENCAP_FLAG_IPV6,
5705 true, false);
5706 }
5707
5708 /* Caller must hold efx->filter_sem for read if race against
5709 * efx_ef10_filter_table_remove() is possible
5710 */
5711 static void efx_ef10_filter_sync_rx_mode(struct efx_nic *efx)
5712 {
5713 struct efx_ef10_filter_table *table = efx->filter_state;
5714 struct net_device *net_dev = efx->net_dev;
5715 struct efx_ef10_filter_vlan *vlan;
5716 bool vlan_filter;
5717
5718 if (!efx_dev_registered(efx))
5719 return;
5720
5721 if (!table)
5722 return;
5723
5724 efx_ef10_filter_mark_old(efx);
5725
5726 /* Copy/convert the address lists; add the primary station
5727 * address and broadcast address
5728 */
5729 netif_addr_lock_bh(net_dev);
5730 efx_ef10_filter_uc_addr_list(efx);
5731 efx_ef10_filter_mc_addr_list(efx);
5732 netif_addr_unlock_bh(net_dev);
5733
5734 /* If VLAN filtering changes, all old filters are finally removed.
5735 * Do it in advance to avoid conflicts for unicast untagged and
5736 * VLAN 0 tagged filters.
5737 */
5738 vlan_filter = !!(net_dev->features & NETIF_F_HW_VLAN_CTAG_FILTER);
5739 if (table->vlan_filter != vlan_filter) {
5740 table->vlan_filter = vlan_filter;
5741 efx_ef10_filter_remove_old(efx);
5742 }
5743
5744 list_for_each_entry(vlan, &table->vlan_list, list)
5745 efx_ef10_filter_vlan_sync_rx_mode(efx, vlan);
5746
5747 efx_ef10_filter_remove_old(efx);
5748 table->mc_promisc_last = table->mc_promisc;
5749 }
5750
5751 static struct efx_ef10_filter_vlan *efx_ef10_filter_find_vlan(struct efx_nic *efx, u16 vid)
5752 {
5753 struct efx_ef10_filter_table *table = efx->filter_state;
5754 struct efx_ef10_filter_vlan *vlan;
5755
5756 WARN_ON(!rwsem_is_locked(&efx->filter_sem));
5757
5758 list_for_each_entry(vlan, &table->vlan_list, list) {
5759 if (vlan->vid == vid)
5760 return vlan;
5761 }
5762
5763 return NULL;
5764 }
5765
5766 static int efx_ef10_filter_add_vlan(struct efx_nic *efx, u16 vid)
5767 {
5768 struct efx_ef10_filter_table *table = efx->filter_state;
5769 struct efx_ef10_filter_vlan *vlan;
5770 unsigned int i;
5771
5772 if (!efx_rwsem_assert_write_locked(&efx->filter_sem))
5773 return -EINVAL;
5774
5775 vlan = efx_ef10_filter_find_vlan(efx, vid);
5776 if (WARN_ON(vlan)) {
5777 netif_err(efx, drv, efx->net_dev,
5778 "VLAN %u already added\n", vid);
5779 return -EALREADY;
5780 }
5781
5782 vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
5783 if (!vlan)
5784 return -ENOMEM;
5785
5786 vlan->vid = vid;
5787
5788 for (i = 0; i < ARRAY_SIZE(vlan->uc); i++)
5789 vlan->uc[i] = EFX_EF10_FILTER_ID_INVALID;
5790 for (i = 0; i < ARRAY_SIZE(vlan->mc); i++)
5791 vlan->mc[i] = EFX_EF10_FILTER_ID_INVALID;
5792 for (i = 0; i < EFX_EF10_NUM_DEFAULT_FILTERS; i++)
5793 vlan->default_filters[i] = EFX_EF10_FILTER_ID_INVALID;
5794
5795 list_add_tail(&vlan->list, &table->vlan_list);
5796
5797 if (efx_dev_registered(efx))
5798 efx_ef10_filter_vlan_sync_rx_mode(efx, vlan);
5799
5800 return 0;
5801 }
5802
5803 static void efx_ef10_filter_del_vlan_internal(struct efx_nic *efx,
5804 struct efx_ef10_filter_vlan *vlan)
5805 {
5806 unsigned int i;
5807
5808 /* See comment in efx_ef10_filter_table_remove() */
5809 if (!efx_rwsem_assert_write_locked(&efx->filter_sem))
5810 return;
5811
5812 list_del(&vlan->list);
5813
5814 for (i = 0; i < ARRAY_SIZE(vlan->uc); i++)
5815 efx_ef10_filter_remove_unsafe(efx, EFX_FILTER_PRI_AUTO,
5816 vlan->uc[i]);
5817 for (i = 0; i < ARRAY_SIZE(vlan->mc); i++)
5818 efx_ef10_filter_remove_unsafe(efx, EFX_FILTER_PRI_AUTO,
5819 vlan->mc[i]);
5820 for (i = 0; i < EFX_EF10_NUM_DEFAULT_FILTERS; i++)
5821 if (vlan->default_filters[i] != EFX_EF10_FILTER_ID_INVALID)
5822 efx_ef10_filter_remove_unsafe(efx, EFX_FILTER_PRI_AUTO,
5823 vlan->default_filters[i]);
5824
5825 kfree(vlan);
5826 }
5827
5828 static void efx_ef10_filter_del_vlan(struct efx_nic *efx, u16 vid)
5829 {
5830 struct efx_ef10_filter_vlan *vlan;
5831
5832 /* See comment in efx_ef10_filter_table_remove() */
5833 if (!efx_rwsem_assert_write_locked(&efx->filter_sem))
5834 return;
5835
5836 vlan = efx_ef10_filter_find_vlan(efx, vid);
5837 if (!vlan) {
5838 netif_err(efx, drv, efx->net_dev,
5839 "VLAN %u not found in filter state\n", vid);
5840 return;
5841 }
5842
5843 efx_ef10_filter_del_vlan_internal(efx, vlan);
5844 }
5845
5846 static int efx_ef10_set_mac_address(struct efx_nic *efx)
5847 {
5848 MCDI_DECLARE_BUF(inbuf, MC_CMD_VADAPTOR_SET_MAC_IN_LEN);
5849 struct efx_ef10_nic_data *nic_data = efx->nic_data;
5850 bool was_enabled = efx->port_enabled;
5851 int rc;
5852
5853 efx_device_detach_sync(efx);
5854 efx_net_stop(efx->net_dev);
5855
5856 mutex_lock(&efx->mac_lock);
5857 down_write(&efx->filter_sem);
5858 efx_ef10_filter_table_remove(efx);
5859
5860 ether_addr_copy(MCDI_PTR(inbuf, VADAPTOR_SET_MAC_IN_MACADDR),
5861 efx->net_dev->dev_addr);
5862 MCDI_SET_DWORD(inbuf, VADAPTOR_SET_MAC_IN_UPSTREAM_PORT_ID,
5863 nic_data->vport_id);
5864 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VADAPTOR_SET_MAC, inbuf,
5865 sizeof(inbuf), NULL, 0, NULL);
5866
5867 efx_ef10_filter_table_probe(efx);
5868 up_write(&efx->filter_sem);
5869 mutex_unlock(&efx->mac_lock);
5870
5871 if (was_enabled)
5872 efx_net_open(efx->net_dev);
5873 efx_device_attach_if_not_resetting(efx);
5874
5875 #ifdef CONFIG_SFC_SRIOV
5876 if (efx->pci_dev->is_virtfn && efx->pci_dev->physfn) {
5877 struct pci_dev *pci_dev_pf = efx->pci_dev->physfn;
5878
5879 if (rc == -EPERM) {
5880 struct efx_nic *efx_pf;
5881
5882 /* Switch to PF and change MAC address on vport */
5883 efx_pf = pci_get_drvdata(pci_dev_pf);
5884
5885 rc = efx_ef10_sriov_set_vf_mac(efx_pf,
5886 nic_data->vf_index,
5887 efx->net_dev->dev_addr);
5888 } else if (!rc) {
5889 struct efx_nic *efx_pf = pci_get_drvdata(pci_dev_pf);
5890 struct efx_ef10_nic_data *nic_data = efx_pf->nic_data;
5891 unsigned int i;
5892
5893 /* MAC address successfully changed by VF (with MAC
5894 * spoofing) so update the parent PF if possible.
5895 */
5896 for (i = 0; i < efx_pf->vf_count; ++i) {
5897 struct ef10_vf *vf = nic_data->vf + i;
5898
5899 if (vf->efx == efx) {
5900 ether_addr_copy(vf->mac,
5901 efx->net_dev->dev_addr);
5902 return 0;
5903 }
5904 }
5905 }
5906 } else
5907 #endif
5908 if (rc == -EPERM) {
5909 netif_err(efx, drv, efx->net_dev,
5910 "Cannot change MAC address; use sfboot to enable"
5911 " mac-spoofing on this interface\n");
5912 } else if (rc == -ENOSYS && !efx_ef10_is_vf(efx)) {
5913 /* If the active MCFW does not support MC_CMD_VADAPTOR_SET_MAC
5914 * fall-back to the method of changing the MAC address on the
5915 * vport. This only applies to PFs because such versions of
5916 * MCFW do not support VFs.
5917 */
5918 rc = efx_ef10_vport_set_mac_address(efx);
5919 } else if (rc) {
5920 efx_mcdi_display_error(efx, MC_CMD_VADAPTOR_SET_MAC,
5921 sizeof(inbuf), NULL, 0, rc);
5922 }
5923
5924 return rc;
5925 }
5926
5927 static int efx_ef10_mac_reconfigure(struct efx_nic *efx)
5928 {
5929 efx_ef10_filter_sync_rx_mode(efx);
5930
5931 return efx_mcdi_set_mac(efx);
5932 }
5933
5934 static int efx_ef10_mac_reconfigure_vf(struct efx_nic *efx)
5935 {
5936 efx_ef10_filter_sync_rx_mode(efx);
5937
5938 return 0;
5939 }
5940
5941 static int efx_ef10_start_bist(struct efx_nic *efx, u32 bist_type)
5942 {
5943 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
5944
5945 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_type);
5946 return efx_mcdi_rpc(efx, MC_CMD_START_BIST, inbuf, sizeof(inbuf),
5947 NULL, 0, NULL);
5948 }
5949
5950 /* MC BISTs follow a different poll mechanism to phy BISTs.
5951 * The BIST is done in the poll handler on the MC, and the MCDI command
5952 * will block until the BIST is done.
5953 */
5954 static int efx_ef10_poll_bist(struct efx_nic *efx)
5955 {
5956 int rc;
5957 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_LEN);
5958 size_t outlen;
5959 u32 result;
5960
5961 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
5962 outbuf, sizeof(outbuf), &outlen);
5963 if (rc != 0)
5964 return rc;
5965
5966 if (outlen < MC_CMD_POLL_BIST_OUT_LEN)
5967 return -EIO;
5968
5969 result = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
5970 switch (result) {
5971 case MC_CMD_POLL_BIST_PASSED:
5972 netif_dbg(efx, hw, efx->net_dev, "BIST passed.\n");
5973 return 0;
5974 case MC_CMD_POLL_BIST_TIMEOUT:
5975 netif_err(efx, hw, efx->net_dev, "BIST timed out\n");
5976 return -EIO;
5977 case MC_CMD_POLL_BIST_FAILED:
5978 netif_err(efx, hw, efx->net_dev, "BIST failed.\n");
5979 return -EIO;
5980 default:
5981 netif_err(efx, hw, efx->net_dev,
5982 "BIST returned unknown result %u", result);
5983 return -EIO;
5984 }
5985 }
5986
5987 static int efx_ef10_run_bist(struct efx_nic *efx, u32 bist_type)
5988 {
5989 int rc;
5990
5991 netif_dbg(efx, drv, efx->net_dev, "starting BIST type %u\n", bist_type);
5992
5993 rc = efx_ef10_start_bist(efx, bist_type);
5994 if (rc != 0)
5995 return rc;
5996
5997 return efx_ef10_poll_bist(efx);
5998 }
5999
6000 static int
6001 efx_ef10_test_chip(struct efx_nic *efx, struct efx_self_tests *tests)
6002 {
6003 int rc, rc2;
6004
6005 efx_reset_down(efx, RESET_TYPE_WORLD);
6006
6007 rc = efx_mcdi_rpc(efx, MC_CMD_ENABLE_OFFLINE_BIST,
6008 NULL, 0, NULL, 0, NULL);
6009 if (rc != 0)
6010 goto out;
6011
6012 tests->memory = efx_ef10_run_bist(efx, MC_CMD_MC_MEM_BIST) ? -1 : 1;
6013 tests->registers = efx_ef10_run_bist(efx, MC_CMD_REG_BIST) ? -1 : 1;
6014
6015 rc = efx_mcdi_reset(efx, RESET_TYPE_WORLD);
6016
6017 out:
6018 if (rc == -EPERM)
6019 rc = 0;
6020 rc2 = efx_reset_up(efx, RESET_TYPE_WORLD, rc == 0);
6021 return rc ? rc : rc2;
6022 }
6023
6024 #ifdef CONFIG_SFC_MTD
6025
6026 struct efx_ef10_nvram_type_info {
6027 u16 type, type_mask;
6028 u8 port;
6029 const char *name;
6030 };
6031
6032 static const struct efx_ef10_nvram_type_info efx_ef10_nvram_types[] = {
6033 { NVRAM_PARTITION_TYPE_MC_FIRMWARE, 0, 0, "sfc_mcfw" },
6034 { NVRAM_PARTITION_TYPE_MC_FIRMWARE_BACKUP, 0, 0, "sfc_mcfw_backup" },
6035 { NVRAM_PARTITION_TYPE_EXPANSION_ROM, 0, 0, "sfc_exp_rom" },
6036 { NVRAM_PARTITION_TYPE_STATIC_CONFIG, 0, 0, "sfc_static_cfg" },
6037 { NVRAM_PARTITION_TYPE_DYNAMIC_CONFIG, 0, 0, "sfc_dynamic_cfg" },
6038 { NVRAM_PARTITION_TYPE_EXPROM_CONFIG_PORT0, 0, 0, "sfc_exp_rom_cfg" },
6039 { NVRAM_PARTITION_TYPE_EXPROM_CONFIG_PORT1, 0, 1, "sfc_exp_rom_cfg" },
6040 { NVRAM_PARTITION_TYPE_EXPROM_CONFIG_PORT2, 0, 2, "sfc_exp_rom_cfg" },
6041 { NVRAM_PARTITION_TYPE_EXPROM_CONFIG_PORT3, 0, 3, "sfc_exp_rom_cfg" },
6042 { NVRAM_PARTITION_TYPE_LICENSE, 0, 0, "sfc_license" },
6043 { NVRAM_PARTITION_TYPE_PHY_MIN, 0xff, 0, "sfc_phy_fw" },
6044 /* MUM and SUC firmware share the same partition type */
6045 { NVRAM_PARTITION_TYPE_MUM_FIRMWARE, 0, 0, "sfc_mumfw" },
6046 { NVRAM_PARTITION_TYPE_EXPANSION_UEFI, 0, 0, "sfc_uefi" },
6047 { NVRAM_PARTITION_TYPE_STATUS, 0, 0, "sfc_status" }
6048 };
6049 #define EF10_NVRAM_PARTITION_COUNT ARRAY_SIZE(efx_ef10_nvram_types)
6050
6051 static int efx_ef10_mtd_probe_partition(struct efx_nic *efx,
6052 struct efx_mcdi_mtd_partition *part,
6053 unsigned int type,
6054 unsigned long *found)
6055 {
6056 MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_METADATA_IN_LEN);
6057 MCDI_DECLARE_BUF(outbuf, MC_CMD_NVRAM_METADATA_OUT_LENMAX);
6058 const struct efx_ef10_nvram_type_info *info;
6059 size_t size, erase_size, outlen;
6060 int type_idx = 0;
6061 bool protected;
6062 int rc;
6063
6064 for (type_idx = 0; ; type_idx++) {
6065 if (type_idx == EF10_NVRAM_PARTITION_COUNT)
6066 return -ENODEV;
6067 info = efx_ef10_nvram_types + type_idx;
6068 if ((type & ~info->type_mask) == info->type)
6069 break;
6070 }
6071 if (info->port != efx_port_num(efx))
6072 return -ENODEV;
6073
6074 rc = efx_mcdi_nvram_info(efx, type, &size, &erase_size, &protected);
6075 if (rc)
6076 return rc;
6077 if (protected)
6078 return -ENODEV; /* hide it */
6079
6080 /* If we've already exposed a partition of this type, hide this
6081 * duplicate. All operations on MTDs are keyed by the type anyway,
6082 * so we can't act on the duplicate.
6083 */
6084 if (__test_and_set_bit(type_idx, found))
6085 return -EEXIST;
6086
6087 part->nvram_type = type;
6088
6089 MCDI_SET_DWORD(inbuf, NVRAM_METADATA_IN_TYPE, type);
6090 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_METADATA, inbuf, sizeof(inbuf),
6091 outbuf, sizeof(outbuf), &outlen);
6092 if (rc)
6093 return rc;
6094 if (outlen < MC_CMD_NVRAM_METADATA_OUT_LENMIN)
6095 return -EIO;
6096 if (MCDI_DWORD(outbuf, NVRAM_METADATA_OUT_FLAGS) &
6097 (1 << MC_CMD_NVRAM_METADATA_OUT_SUBTYPE_VALID_LBN))
6098 part->fw_subtype = MCDI_DWORD(outbuf,
6099 NVRAM_METADATA_OUT_SUBTYPE);
6100
6101 part->common.dev_type_name = "EF10 NVRAM manager";
6102 part->common.type_name = info->name;
6103
6104 part->common.mtd.type = MTD_NORFLASH;
6105 part->common.mtd.flags = MTD_CAP_NORFLASH;
6106 part->common.mtd.size = size;
6107 part->common.mtd.erasesize = erase_size;
6108 /* sfc_status is read-only */
6109 if (!erase_size)
6110 part->common.mtd.flags |= MTD_NO_ERASE;
6111
6112 return 0;
6113 }
6114
6115 static int efx_ef10_mtd_probe(struct efx_nic *efx)
6116 {
6117 MCDI_DECLARE_BUF(outbuf, MC_CMD_NVRAM_PARTITIONS_OUT_LENMAX);
6118 DECLARE_BITMAP(found, EF10_NVRAM_PARTITION_COUNT);
6119 struct efx_mcdi_mtd_partition *parts;
6120 size_t outlen, n_parts_total, i, n_parts;
6121 unsigned int type;
6122 int rc;
6123
6124 ASSERT_RTNL();
6125
6126 BUILD_BUG_ON(MC_CMD_NVRAM_PARTITIONS_IN_LEN != 0);
6127 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_PARTITIONS, NULL, 0,
6128 outbuf, sizeof(outbuf), &outlen);
6129 if (rc)
6130 return rc;
6131 if (outlen < MC_CMD_NVRAM_PARTITIONS_OUT_LENMIN)
6132 return -EIO;
6133
6134 n_parts_total = MCDI_DWORD(outbuf, NVRAM_PARTITIONS_OUT_NUM_PARTITIONS);
6135 if (n_parts_total >
6136 MCDI_VAR_ARRAY_LEN(outlen, NVRAM_PARTITIONS_OUT_TYPE_ID))
6137 return -EIO;
6138
6139 parts = kcalloc(n_parts_total, sizeof(*parts), GFP_KERNEL);
6140 if (!parts)
6141 return -ENOMEM;
6142
6143 n_parts = 0;
6144 for (i = 0; i < n_parts_total; i++) {
6145 type = MCDI_ARRAY_DWORD(outbuf, NVRAM_PARTITIONS_OUT_TYPE_ID,
6146 i);
6147 rc = efx_ef10_mtd_probe_partition(efx, &parts[n_parts], type,
6148 found);
6149 if (rc == -EEXIST || rc == -ENODEV)
6150 continue;
6151 if (rc)
6152 goto fail;
6153 n_parts++;
6154 }
6155
6156 rc = efx_mtd_add(efx, &parts[0].common, n_parts, sizeof(*parts));
6157 fail:
6158 if (rc)
6159 kfree(parts);
6160 return rc;
6161 }
6162
6163 #endif /* CONFIG_SFC_MTD */
6164
6165 static void efx_ef10_ptp_write_host_time(struct efx_nic *efx, u32 host_time)
6166 {
6167 _efx_writed(efx, cpu_to_le32(host_time), ER_DZ_MC_DB_LWRD);
6168 }
6169
6170 static void efx_ef10_ptp_write_host_time_vf(struct efx_nic *efx,
6171 u32 host_time) {}
6172
6173 static int efx_ef10_rx_enable_timestamping(struct efx_channel *channel,
6174 bool temp)
6175 {
6176 MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_TIME_EVENT_SUBSCRIBE_LEN);
6177 int rc;
6178
6179 if (channel->sync_events_state == SYNC_EVENTS_REQUESTED ||
6180 channel->sync_events_state == SYNC_EVENTS_VALID ||
6181 (temp && channel->sync_events_state == SYNC_EVENTS_DISABLED))
6182 return 0;
6183 channel->sync_events_state = SYNC_EVENTS_REQUESTED;
6184
6185 MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_TIME_EVENT_SUBSCRIBE);
6186 MCDI_SET_DWORD(inbuf, PTP_IN_PERIPH_ID, 0);
6187 MCDI_SET_DWORD(inbuf, PTP_IN_TIME_EVENT_SUBSCRIBE_QUEUE,
6188 channel->channel);
6189
6190 rc = efx_mcdi_rpc(channel->efx, MC_CMD_PTP,
6191 inbuf, sizeof(inbuf), NULL, 0, NULL);
6192
6193 if (rc != 0)
6194 channel->sync_events_state = temp ? SYNC_EVENTS_QUIESCENT :
6195 SYNC_EVENTS_DISABLED;
6196
6197 return rc;
6198 }
6199
6200 static int efx_ef10_rx_disable_timestamping(struct efx_channel *channel,
6201 bool temp)
6202 {
6203 MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_TIME_EVENT_UNSUBSCRIBE_LEN);
6204 int rc;
6205
6206 if (channel->sync_events_state == SYNC_EVENTS_DISABLED ||
6207 (temp && channel->sync_events_state == SYNC_EVENTS_QUIESCENT))
6208 return 0;
6209 if (channel->sync_events_state == SYNC_EVENTS_QUIESCENT) {
6210 channel->sync_events_state = SYNC_EVENTS_DISABLED;
6211 return 0;
6212 }
6213 channel->sync_events_state = temp ? SYNC_EVENTS_QUIESCENT :
6214 SYNC_EVENTS_DISABLED;
6215
6216 MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_TIME_EVENT_UNSUBSCRIBE);
6217 MCDI_SET_DWORD(inbuf, PTP_IN_PERIPH_ID, 0);
6218 MCDI_SET_DWORD(inbuf, PTP_IN_TIME_EVENT_UNSUBSCRIBE_CONTROL,
6219 MC_CMD_PTP_IN_TIME_EVENT_UNSUBSCRIBE_SINGLE);
6220 MCDI_SET_DWORD(inbuf, PTP_IN_TIME_EVENT_UNSUBSCRIBE_QUEUE,
6221 channel->channel);
6222
6223 rc = efx_mcdi_rpc(channel->efx, MC_CMD_PTP,
6224 inbuf, sizeof(inbuf), NULL, 0, NULL);
6225
6226 return rc;
6227 }
6228
6229 static int efx_ef10_ptp_set_ts_sync_events(struct efx_nic *efx, bool en,
6230 bool temp)
6231 {
6232 int (*set)(struct efx_channel *channel, bool temp);
6233 struct efx_channel *channel;
6234
6235 set = en ?
6236 efx_ef10_rx_enable_timestamping :
6237 efx_ef10_rx_disable_timestamping;
6238
6239 channel = efx_ptp_channel(efx);
6240 if (channel) {
6241 int rc = set(channel, temp);
6242 if (en && rc != 0) {
6243 efx_ef10_ptp_set_ts_sync_events(efx, false, temp);
6244 return rc;
6245 }
6246 }
6247
6248 return 0;
6249 }
6250
6251 static int efx_ef10_ptp_set_ts_config_vf(struct efx_nic *efx,
6252 struct hwtstamp_config *init)
6253 {
6254 return -EOPNOTSUPP;
6255 }
6256
6257 static int efx_ef10_ptp_set_ts_config(struct efx_nic *efx,
6258 struct hwtstamp_config *init)
6259 {
6260 int rc;
6261
6262 switch (init->rx_filter) {
6263 case HWTSTAMP_FILTER_NONE:
6264 efx_ef10_ptp_set_ts_sync_events(efx, false, false);
6265 /* if TX timestamping is still requested then leave PTP on */
6266 return efx_ptp_change_mode(efx,
6267 init->tx_type != HWTSTAMP_TX_OFF, 0);
6268 case HWTSTAMP_FILTER_ALL:
6269 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
6270 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
6271 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
6272 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
6273 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
6274 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
6275 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
6276 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
6277 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
6278 case HWTSTAMP_FILTER_PTP_V2_EVENT:
6279 case HWTSTAMP_FILTER_PTP_V2_SYNC:
6280 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
6281 case HWTSTAMP_FILTER_NTP_ALL:
6282 init->rx_filter = HWTSTAMP_FILTER_ALL;
6283 rc = efx_ptp_change_mode(efx, true, 0);
6284 if (!rc)
6285 rc = efx_ef10_ptp_set_ts_sync_events(efx, true, false);
6286 if (rc)
6287 efx_ptp_change_mode(efx, false, 0);
6288 return rc;
6289 default:
6290 return -ERANGE;
6291 }
6292 }
6293
6294 static int efx_ef10_get_phys_port_id(struct efx_nic *efx,
6295 struct netdev_phys_item_id *ppid)
6296 {
6297 struct efx_ef10_nic_data *nic_data = efx->nic_data;
6298
6299 if (!is_valid_ether_addr(nic_data->port_id))
6300 return -EOPNOTSUPP;
6301
6302 ppid->id_len = ETH_ALEN;
6303 memcpy(ppid->id, nic_data->port_id, ppid->id_len);
6304
6305 return 0;
6306 }
6307
6308 static int efx_ef10_vlan_rx_add_vid(struct efx_nic *efx, __be16 proto, u16 vid)
6309 {
6310 if (proto != htons(ETH_P_8021Q))
6311 return -EINVAL;
6312
6313 return efx_ef10_add_vlan(efx, vid);
6314 }
6315
6316 static int efx_ef10_vlan_rx_kill_vid(struct efx_nic *efx, __be16 proto, u16 vid)
6317 {
6318 if (proto != htons(ETH_P_8021Q))
6319 return -EINVAL;
6320
6321 return efx_ef10_del_vlan(efx, vid);
6322 }
6323
6324 /* We rely on the MCDI wiping out our TX rings if it made any changes to the
6325 * ports table, ensuring that any TSO descriptors that were made on a now-
6326 * removed tunnel port will be blown away and won't break things when we try
6327 * to transmit them using the new ports table.
6328 */
6329 static int efx_ef10_set_udp_tnl_ports(struct efx_nic *efx, bool unloading)
6330 {
6331 struct efx_ef10_nic_data *nic_data = efx->nic_data;
6332 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_LENMAX);
6333 MCDI_DECLARE_BUF(outbuf, MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_OUT_LEN);
6334 bool will_reset = false;
6335 size_t num_entries = 0;
6336 size_t inlen, outlen;
6337 size_t i;
6338 int rc;
6339 efx_dword_t flags_and_num_entries;
6340
6341 WARN_ON(!mutex_is_locked(&nic_data->udp_tunnels_lock));
6342
6343 nic_data->udp_tunnels_dirty = false;
6344
6345 if (!(nic_data->datapath_caps &
6346 (1 << MC_CMD_GET_CAPABILITIES_OUT_VXLAN_NVGRE_LBN))) {
6347 efx_device_attach_if_not_resetting(efx);
6348 return 0;
6349 }
6350
6351 BUILD_BUG_ON(ARRAY_SIZE(nic_data->udp_tunnels) >
6352 MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_ENTRIES_MAXNUM);
6353
6354 for (i = 0; i < ARRAY_SIZE(nic_data->udp_tunnels); ++i) {
6355 if (nic_data->udp_tunnels[i].count &&
6356 nic_data->udp_tunnels[i].port) {
6357 efx_dword_t entry;
6358
6359 EFX_POPULATE_DWORD_2(entry,
6360 TUNNEL_ENCAP_UDP_PORT_ENTRY_UDP_PORT,
6361 ntohs(nic_data->udp_tunnels[i].port),
6362 TUNNEL_ENCAP_UDP_PORT_ENTRY_PROTOCOL,
6363 nic_data->udp_tunnels[i].type);
6364 *_MCDI_ARRAY_DWORD(inbuf,
6365 SET_TUNNEL_ENCAP_UDP_PORTS_IN_ENTRIES,
6366 num_entries++) = entry;
6367 }
6368 }
6369
6370 BUILD_BUG_ON((MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_NUM_ENTRIES_OFST -
6371 MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_FLAGS_OFST) * 8 !=
6372 EFX_WORD_1_LBN);
6373 BUILD_BUG_ON(MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_NUM_ENTRIES_LEN * 8 !=
6374 EFX_WORD_1_WIDTH);
6375 EFX_POPULATE_DWORD_2(flags_and_num_entries,
6376 MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_UNLOADING,
6377 !!unloading,
6378 EFX_WORD_1, num_entries);
6379 *_MCDI_DWORD(inbuf, SET_TUNNEL_ENCAP_UDP_PORTS_IN_FLAGS) =
6380 flags_and_num_entries;
6381
6382 inlen = MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_IN_LEN(num_entries);
6383
6384 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS,
6385 inbuf, inlen, outbuf, sizeof(outbuf), &outlen);
6386 if (rc == -EIO) {
6387 /* Most likely the MC rebooted due to another function also
6388 * setting its tunnel port list. Mark the tunnel port list as
6389 * dirty, so it will be pushed upon coming up from the reboot.
6390 */
6391 nic_data->udp_tunnels_dirty = true;
6392 return 0;
6393 }
6394
6395 if (rc) {
6396 /* expected not available on unprivileged functions */
6397 if (rc != -EPERM)
6398 netif_warn(efx, drv, efx->net_dev,
6399 "Unable to set UDP tunnel ports; rc=%d.\n", rc);
6400 } else if (MCDI_DWORD(outbuf, SET_TUNNEL_ENCAP_UDP_PORTS_OUT_FLAGS) &
6401 (1 << MC_CMD_SET_TUNNEL_ENCAP_UDP_PORTS_OUT_RESETTING_LBN)) {
6402 netif_info(efx, drv, efx->net_dev,
6403 "Rebooting MC due to UDP tunnel port list change\n");
6404 will_reset = true;
6405 if (unloading)
6406 /* Delay for the MC reset to complete. This will make
6407 * unloading other functions a bit smoother. This is a
6408 * race, but the other unload will work whichever way
6409 * it goes, this just avoids an unnecessary error
6410 * message.
6411 */
6412 msleep(100);
6413 }
6414 if (!will_reset && !unloading) {
6415 /* The caller will have detached, relying on the MC reset to
6416 * trigger a re-attach. Since there won't be an MC reset, we
6417 * have to do the attach ourselves.
6418 */
6419 efx_device_attach_if_not_resetting(efx);
6420 }
6421
6422 return rc;
6423 }
6424
6425 static int efx_ef10_udp_tnl_push_ports(struct efx_nic *efx)
6426 {
6427 struct efx_ef10_nic_data *nic_data = efx->nic_data;
6428 int rc = 0;
6429
6430 mutex_lock(&nic_data->udp_tunnels_lock);
6431 if (nic_data->udp_tunnels_dirty) {
6432 /* Make sure all TX are stopped while we modify the table, else
6433 * we might race against an efx_features_check().
6434 */
6435 efx_device_detach_sync(efx);
6436 rc = efx_ef10_set_udp_tnl_ports(efx, false);
6437 }
6438 mutex_unlock(&nic_data->udp_tunnels_lock);
6439 return rc;
6440 }
6441
6442 static struct efx_udp_tunnel *__efx_ef10_udp_tnl_lookup_port(struct efx_nic *efx,
6443 __be16 port)
6444 {
6445 struct efx_ef10_nic_data *nic_data = efx->nic_data;
6446 size_t i;
6447
6448 for (i = 0; i < ARRAY_SIZE(nic_data->udp_tunnels); ++i) {
6449 if (!nic_data->udp_tunnels[i].count)
6450 continue;
6451 if (nic_data->udp_tunnels[i].port == port)
6452 return &nic_data->udp_tunnels[i];
6453 }
6454 return NULL;
6455 }
6456
6457 static int efx_ef10_udp_tnl_add_port(struct efx_nic *efx,
6458 struct efx_udp_tunnel tnl)
6459 {
6460 struct efx_ef10_nic_data *nic_data = efx->nic_data;
6461 struct efx_udp_tunnel *match;
6462 char typebuf[8];
6463 size_t i;
6464 int rc;
6465
6466 if (!(nic_data->datapath_caps &
6467 (1 << MC_CMD_GET_CAPABILITIES_OUT_VXLAN_NVGRE_LBN)))
6468 return 0;
6469
6470 efx_get_udp_tunnel_type_name(tnl.type, typebuf, sizeof(typebuf));
6471 netif_dbg(efx, drv, efx->net_dev, "Adding UDP tunnel (%s) port %d\n",
6472 typebuf, ntohs(tnl.port));
6473
6474 mutex_lock(&nic_data->udp_tunnels_lock);
6475 /* Make sure all TX are stopped while we add to the table, else we
6476 * might race against an efx_features_check().
6477 */
6478 efx_device_detach_sync(efx);
6479
6480 match = __efx_ef10_udp_tnl_lookup_port(efx, tnl.port);
6481 if (match != NULL) {
6482 if (match->type == tnl.type) {
6483 netif_dbg(efx, drv, efx->net_dev,
6484 "Referencing existing tunnel entry\n");
6485 match->count++;
6486 /* No need to cause an MCDI update */
6487 rc = 0;
6488 goto unlock_out;
6489 }
6490 efx_get_udp_tunnel_type_name(match->type,
6491 typebuf, sizeof(typebuf));
6492 netif_dbg(efx, drv, efx->net_dev,
6493 "UDP port %d is already in use by %s\n",
6494 ntohs(tnl.port), typebuf);
6495 rc = -EEXIST;
6496 goto unlock_out;
6497 }
6498
6499 for (i = 0; i < ARRAY_SIZE(nic_data->udp_tunnels); ++i)
6500 if (!nic_data->udp_tunnels[i].count) {
6501 nic_data->udp_tunnels[i] = tnl;
6502 nic_data->udp_tunnels[i].count = 1;
6503 rc = efx_ef10_set_udp_tnl_ports(efx, false);
6504 goto unlock_out;
6505 }
6506
6507 netif_dbg(efx, drv, efx->net_dev,
6508 "Unable to add UDP tunnel (%s) port %d; insufficient resources.\n",
6509 typebuf, ntohs(tnl.port));
6510
6511 rc = -ENOMEM;
6512
6513 unlock_out:
6514 mutex_unlock(&nic_data->udp_tunnels_lock);
6515 return rc;
6516 }
6517
6518 /* Called under the TX lock with the TX queue running, hence no-one can be
6519 * in the middle of updating the UDP tunnels table. However, they could
6520 * have tried and failed the MCDI, in which case they'll have set the dirty
6521 * flag before dropping their locks.
6522 */
6523 static bool efx_ef10_udp_tnl_has_port(struct efx_nic *efx, __be16 port)
6524 {
6525 struct efx_ef10_nic_data *nic_data = efx->nic_data;
6526
6527 if (!(nic_data->datapath_caps &
6528 (1 << MC_CMD_GET_CAPABILITIES_OUT_VXLAN_NVGRE_LBN)))
6529 return false;
6530
6531 if (nic_data->udp_tunnels_dirty)
6532 /* SW table may not match HW state, so just assume we can't
6533 * use any UDP tunnel offloads.
6534 */
6535 return false;
6536
6537 return __efx_ef10_udp_tnl_lookup_port(efx, port) != NULL;
6538 }
6539
6540 static int efx_ef10_udp_tnl_del_port(struct efx_nic *efx,
6541 struct efx_udp_tunnel tnl)
6542 {
6543 struct efx_ef10_nic_data *nic_data = efx->nic_data;
6544 struct efx_udp_tunnel *match;
6545 char typebuf[8];
6546 int rc;
6547
6548 if (!(nic_data->datapath_caps &
6549 (1 << MC_CMD_GET_CAPABILITIES_OUT_VXLAN_NVGRE_LBN)))
6550 return 0;
6551
6552 efx_get_udp_tunnel_type_name(tnl.type, typebuf, sizeof(typebuf));
6553 netif_dbg(efx, drv, efx->net_dev, "Removing UDP tunnel (%s) port %d\n",
6554 typebuf, ntohs(tnl.port));
6555
6556 mutex_lock(&nic_data->udp_tunnels_lock);
6557 /* Make sure all TX are stopped while we remove from the table, else we
6558 * might race against an efx_features_check().
6559 */
6560 efx_device_detach_sync(efx);
6561
6562 match = __efx_ef10_udp_tnl_lookup_port(efx, tnl.port);
6563 if (match != NULL) {
6564 if (match->type == tnl.type) {
6565 if (--match->count) {
6566 /* Port is still in use, so nothing to do */
6567 netif_dbg(efx, drv, efx->net_dev,
6568 "UDP tunnel port %d remains active\n",
6569 ntohs(tnl.port));
6570 rc = 0;
6571 goto out_unlock;
6572 }
6573 rc = efx_ef10_set_udp_tnl_ports(efx, false);
6574 goto out_unlock;
6575 }
6576 efx_get_udp_tunnel_type_name(match->type,
6577 typebuf, sizeof(typebuf));
6578 netif_warn(efx, drv, efx->net_dev,
6579 "UDP port %d is actually in use by %s, not removing\n",
6580 ntohs(tnl.port), typebuf);
6581 }
6582 rc = -ENOENT;
6583
6584 out_unlock:
6585 mutex_unlock(&nic_data->udp_tunnels_lock);
6586 return rc;
6587 }
6588
6589 #define EF10_OFFLOAD_FEATURES \
6590 (NETIF_F_IP_CSUM | \
6591 NETIF_F_HW_VLAN_CTAG_FILTER | \
6592 NETIF_F_IPV6_CSUM | \
6593 NETIF_F_RXHASH | \
6594 NETIF_F_NTUPLE)
6595
6596 const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
6597 .is_vf = true,
6598 .mem_bar = efx_ef10_vf_mem_bar,
6599 .mem_map_size = efx_ef10_mem_map_size,
6600 .probe = efx_ef10_probe_vf,
6601 .remove = efx_ef10_remove,
6602 .dimension_resources = efx_ef10_dimension_resources,
6603 .init = efx_ef10_init_nic,
6604 .fini = efx_port_dummy_op_void,
6605 .map_reset_reason = efx_ef10_map_reset_reason,
6606 .map_reset_flags = efx_ef10_map_reset_flags,
6607 .reset = efx_ef10_reset,
6608 .probe_port = efx_mcdi_port_probe,
6609 .remove_port = efx_mcdi_port_remove,
6610 .fini_dmaq = efx_ef10_fini_dmaq,
6611 .prepare_flr = efx_ef10_prepare_flr,
6612 .finish_flr = efx_port_dummy_op_void,
6613 .describe_stats = efx_ef10_describe_stats,
6614 .update_stats = efx_ef10_update_stats_vf,
6615 .start_stats = efx_port_dummy_op_void,
6616 .pull_stats = efx_port_dummy_op_void,
6617 .stop_stats = efx_port_dummy_op_void,
6618 .set_id_led = efx_mcdi_set_id_led,
6619 .push_irq_moderation = efx_ef10_push_irq_moderation,
6620 .reconfigure_mac = efx_ef10_mac_reconfigure_vf,
6621 .check_mac_fault = efx_mcdi_mac_check_fault,
6622 .reconfigure_port = efx_mcdi_port_reconfigure,
6623 .get_wol = efx_ef10_get_wol_vf,
6624 .set_wol = efx_ef10_set_wol_vf,
6625 .resume_wol = efx_port_dummy_op_void,
6626 .mcdi_request = efx_ef10_mcdi_request,
6627 .mcdi_poll_response = efx_ef10_mcdi_poll_response,
6628 .mcdi_read_response = efx_ef10_mcdi_read_response,
6629 .mcdi_poll_reboot = efx_ef10_mcdi_poll_reboot,
6630 .mcdi_reboot_detected = efx_ef10_mcdi_reboot_detected,
6631 .irq_enable_master = efx_port_dummy_op_void,
6632 .irq_test_generate = efx_ef10_irq_test_generate,
6633 .irq_disable_non_ev = efx_port_dummy_op_void,
6634 .irq_handle_msi = efx_ef10_msi_interrupt,
6635 .irq_handle_legacy = efx_ef10_legacy_interrupt,
6636 .tx_probe = efx_ef10_tx_probe,
6637 .tx_init = efx_ef10_tx_init,
6638 .tx_remove = efx_ef10_tx_remove,
6639 .tx_write = efx_ef10_tx_write,
6640 .tx_limit_len = efx_ef10_tx_limit_len,
6641 .rx_push_rss_config = efx_ef10_vf_rx_push_rss_config,
6642 .rx_pull_rss_config = efx_ef10_rx_pull_rss_config,
6643 .rx_probe = efx_ef10_rx_probe,
6644 .rx_init = efx_ef10_rx_init,
6645 .rx_remove = efx_ef10_rx_remove,
6646 .rx_write = efx_ef10_rx_write,
6647 .rx_defer_refill = efx_ef10_rx_defer_refill,
6648 .ev_probe = efx_ef10_ev_probe,
6649 .ev_init = efx_ef10_ev_init,
6650 .ev_fini = efx_ef10_ev_fini,
6651 .ev_remove = efx_ef10_ev_remove,
6652 .ev_process = efx_ef10_ev_process,
6653 .ev_read_ack = efx_ef10_ev_read_ack,
6654 .ev_test_generate = efx_ef10_ev_test_generate,
6655 .filter_table_probe = efx_ef10_filter_table_probe,
6656 .filter_table_restore = efx_ef10_filter_table_restore,
6657 .filter_table_remove = efx_ef10_filter_table_remove,
6658 .filter_update_rx_scatter = efx_ef10_filter_update_rx_scatter,
6659 .filter_insert = efx_ef10_filter_insert,
6660 .filter_remove_safe = efx_ef10_filter_remove_safe,
6661 .filter_get_safe = efx_ef10_filter_get_safe,
6662 .filter_clear_rx = efx_ef10_filter_clear_rx,
6663 .filter_count_rx_used = efx_ef10_filter_count_rx_used,
6664 .filter_get_rx_id_limit = efx_ef10_filter_get_rx_id_limit,
6665 .filter_get_rx_ids = efx_ef10_filter_get_rx_ids,
6666 #ifdef CONFIG_RFS_ACCEL
6667 .filter_rfs_expire_one = efx_ef10_filter_rfs_expire_one,
6668 #endif
6669 #ifdef CONFIG_SFC_MTD
6670 .mtd_probe = efx_port_dummy_op_int,
6671 #endif
6672 .ptp_write_host_time = efx_ef10_ptp_write_host_time_vf,
6673 .ptp_set_ts_config = efx_ef10_ptp_set_ts_config_vf,
6674 .vlan_rx_add_vid = efx_ef10_vlan_rx_add_vid,
6675 .vlan_rx_kill_vid = efx_ef10_vlan_rx_kill_vid,
6676 #ifdef CONFIG_SFC_SRIOV
6677 .vswitching_probe = efx_ef10_vswitching_probe_vf,
6678 .vswitching_restore = efx_ef10_vswitching_restore_vf,
6679 .vswitching_remove = efx_ef10_vswitching_remove_vf,
6680 #endif
6681 .get_mac_address = efx_ef10_get_mac_address_vf,
6682 .set_mac_address = efx_ef10_set_mac_address,
6683
6684 .get_phys_port_id = efx_ef10_get_phys_port_id,
6685 .revision = EFX_REV_HUNT_A0,
6686 .max_dma_mask = DMA_BIT_MASK(ESF_DZ_TX_KER_BUF_ADDR_WIDTH),
6687 .rx_prefix_size = ES_DZ_RX_PREFIX_SIZE,
6688 .rx_hash_offset = ES_DZ_RX_PREFIX_HASH_OFST,
6689 .rx_ts_offset = ES_DZ_RX_PREFIX_TSTAMP_OFST,
6690 .can_rx_scatter = true,
6691 .always_rx_scatter = true,
6692 .min_interrupt_mode = EFX_INT_MODE_MSIX,
6693 .max_interrupt_mode = EFX_INT_MODE_MSIX,
6694 .timer_period_max = 1 << ERF_DD_EVQ_IND_TIMER_VAL_WIDTH,
6695 .offload_features = EF10_OFFLOAD_FEATURES,
6696 .mcdi_max_ver = 2,
6697 .max_rx_ip_filters = HUNT_FILTER_TBL_ROWS,
6698 .hwtstamp_filters = 1 << HWTSTAMP_FILTER_NONE |
6699 1 << HWTSTAMP_FILTER_ALL,
6700 .rx_hash_key_size = 40,
6701 };
6702
6703 const struct efx_nic_type efx_hunt_a0_nic_type = {
6704 .is_vf = false,
6705 .mem_bar = efx_ef10_pf_mem_bar,
6706 .mem_map_size = efx_ef10_mem_map_size,
6707 .probe = efx_ef10_probe_pf,
6708 .remove = efx_ef10_remove,
6709 .dimension_resources = efx_ef10_dimension_resources,
6710 .init = efx_ef10_init_nic,
6711 .fini = efx_port_dummy_op_void,
6712 .map_reset_reason = efx_ef10_map_reset_reason,
6713 .map_reset_flags = efx_ef10_map_reset_flags,
6714 .reset = efx_ef10_reset,
6715 .probe_port = efx_mcdi_port_probe,
6716 .remove_port = efx_mcdi_port_remove,
6717 .fini_dmaq = efx_ef10_fini_dmaq,
6718 .prepare_flr = efx_ef10_prepare_flr,
6719 .finish_flr = efx_port_dummy_op_void,
6720 .describe_stats = efx_ef10_describe_stats,
6721 .update_stats = efx_ef10_update_stats_pf,
6722 .start_stats = efx_mcdi_mac_start_stats,
6723 .pull_stats = efx_mcdi_mac_pull_stats,
6724 .stop_stats = efx_mcdi_mac_stop_stats,
6725 .set_id_led = efx_mcdi_set_id_led,
6726 .push_irq_moderation = efx_ef10_push_irq_moderation,
6727 .reconfigure_mac = efx_ef10_mac_reconfigure,
6728 .check_mac_fault = efx_mcdi_mac_check_fault,
6729 .reconfigure_port = efx_mcdi_port_reconfigure,
6730 .get_wol = efx_ef10_get_wol,
6731 .set_wol = efx_ef10_set_wol,
6732 .resume_wol = efx_port_dummy_op_void,
6733 .test_chip = efx_ef10_test_chip,
6734 .test_nvram = efx_mcdi_nvram_test_all,
6735 .mcdi_request = efx_ef10_mcdi_request,
6736 .mcdi_poll_response = efx_ef10_mcdi_poll_response,
6737 .mcdi_read_response = efx_ef10_mcdi_read_response,
6738 .mcdi_poll_reboot = efx_ef10_mcdi_poll_reboot,
6739 .mcdi_reboot_detected = efx_ef10_mcdi_reboot_detected,
6740 .irq_enable_master = efx_port_dummy_op_void,
6741 .irq_test_generate = efx_ef10_irq_test_generate,
6742 .irq_disable_non_ev = efx_port_dummy_op_void,
6743 .irq_handle_msi = efx_ef10_msi_interrupt,
6744 .irq_handle_legacy = efx_ef10_legacy_interrupt,
6745 .tx_probe = efx_ef10_tx_probe,
6746 .tx_init = efx_ef10_tx_init,
6747 .tx_remove = efx_ef10_tx_remove,
6748 .tx_write = efx_ef10_tx_write,
6749 .tx_limit_len = efx_ef10_tx_limit_len,
6750 .rx_push_rss_config = efx_ef10_pf_rx_push_rss_config,
6751 .rx_pull_rss_config = efx_ef10_rx_pull_rss_config,
6752 .rx_push_rss_context_config = efx_ef10_rx_push_rss_context_config,
6753 .rx_pull_rss_context_config = efx_ef10_rx_pull_rss_context_config,
6754 .rx_restore_rss_contexts = efx_ef10_rx_restore_rss_contexts,
6755 .rx_probe = efx_ef10_rx_probe,
6756 .rx_init = efx_ef10_rx_init,
6757 .rx_remove = efx_ef10_rx_remove,
6758 .rx_write = efx_ef10_rx_write,
6759 .rx_defer_refill = efx_ef10_rx_defer_refill,
6760 .ev_probe = efx_ef10_ev_probe,
6761 .ev_init = efx_ef10_ev_init,
6762 .ev_fini = efx_ef10_ev_fini,
6763 .ev_remove = efx_ef10_ev_remove,
6764 .ev_process = efx_ef10_ev_process,
6765 .ev_read_ack = efx_ef10_ev_read_ack,
6766 .ev_test_generate = efx_ef10_ev_test_generate,
6767 .filter_table_probe = efx_ef10_filter_table_probe,
6768 .filter_table_restore = efx_ef10_filter_table_restore,
6769 .filter_table_remove = efx_ef10_filter_table_remove,
6770 .filter_update_rx_scatter = efx_ef10_filter_update_rx_scatter,
6771 .filter_insert = efx_ef10_filter_insert,
6772 .filter_remove_safe = efx_ef10_filter_remove_safe,
6773 .filter_get_safe = efx_ef10_filter_get_safe,
6774 .filter_clear_rx = efx_ef10_filter_clear_rx,
6775 .filter_count_rx_used = efx_ef10_filter_count_rx_used,
6776 .filter_get_rx_id_limit = efx_ef10_filter_get_rx_id_limit,
6777 .filter_get_rx_ids = efx_ef10_filter_get_rx_ids,
6778 #ifdef CONFIG_RFS_ACCEL
6779 .filter_rfs_expire_one = efx_ef10_filter_rfs_expire_one,
6780 #endif
6781 #ifdef CONFIG_SFC_MTD
6782 .mtd_probe = efx_ef10_mtd_probe,
6783 .mtd_rename = efx_mcdi_mtd_rename,
6784 .mtd_read = efx_mcdi_mtd_read,
6785 .mtd_erase = efx_mcdi_mtd_erase,
6786 .mtd_write = efx_mcdi_mtd_write,
6787 .mtd_sync = efx_mcdi_mtd_sync,
6788 #endif
6789 .ptp_write_host_time = efx_ef10_ptp_write_host_time,
6790 .ptp_set_ts_sync_events = efx_ef10_ptp_set_ts_sync_events,
6791 .ptp_set_ts_config = efx_ef10_ptp_set_ts_config,
6792 .vlan_rx_add_vid = efx_ef10_vlan_rx_add_vid,
6793 .vlan_rx_kill_vid = efx_ef10_vlan_rx_kill_vid,
6794 .udp_tnl_push_ports = efx_ef10_udp_tnl_push_ports,
6795 .udp_tnl_add_port = efx_ef10_udp_tnl_add_port,
6796 .udp_tnl_has_port = efx_ef10_udp_tnl_has_port,
6797 .udp_tnl_del_port = efx_ef10_udp_tnl_del_port,
6798 #ifdef CONFIG_SFC_SRIOV
6799 .sriov_configure = efx_ef10_sriov_configure,
6800 .sriov_init = efx_ef10_sriov_init,
6801 .sriov_fini = efx_ef10_sriov_fini,
6802 .sriov_wanted = efx_ef10_sriov_wanted,
6803 .sriov_reset = efx_ef10_sriov_reset,
6804 .sriov_flr = efx_ef10_sriov_flr,
6805 .sriov_set_vf_mac = efx_ef10_sriov_set_vf_mac,
6806 .sriov_set_vf_vlan = efx_ef10_sriov_set_vf_vlan,
6807 .sriov_set_vf_spoofchk = efx_ef10_sriov_set_vf_spoofchk,
6808 .sriov_get_vf_config = efx_ef10_sriov_get_vf_config,
6809 .sriov_set_vf_link_state = efx_ef10_sriov_set_vf_link_state,
6810 .vswitching_probe = efx_ef10_vswitching_probe_pf,
6811 .vswitching_restore = efx_ef10_vswitching_restore_pf,
6812 .vswitching_remove = efx_ef10_vswitching_remove_pf,
6813 #endif
6814 .get_mac_address = efx_ef10_get_mac_address_pf,
6815 .set_mac_address = efx_ef10_set_mac_address,
6816 .tso_versions = efx_ef10_tso_versions,
6817
6818 .get_phys_port_id = efx_ef10_get_phys_port_id,
6819 .revision = EFX_REV_HUNT_A0,
6820 .max_dma_mask = DMA_BIT_MASK(ESF_DZ_TX_KER_BUF_ADDR_WIDTH),
6821 .rx_prefix_size = ES_DZ_RX_PREFIX_SIZE,
6822 .rx_hash_offset = ES_DZ_RX_PREFIX_HASH_OFST,
6823 .rx_ts_offset = ES_DZ_RX_PREFIX_TSTAMP_OFST,
6824 .can_rx_scatter = true,
6825 .always_rx_scatter = true,
6826 .option_descriptors = true,
6827 .min_interrupt_mode = EFX_INT_MODE_LEGACY,
6828 .max_interrupt_mode = EFX_INT_MODE_MSIX,
6829 .timer_period_max = 1 << ERF_DD_EVQ_IND_TIMER_VAL_WIDTH,
6830 .offload_features = EF10_OFFLOAD_FEATURES,
6831 .mcdi_max_ver = 2,
6832 .max_rx_ip_filters = HUNT_FILTER_TBL_ROWS,
6833 .hwtstamp_filters = 1 << HWTSTAMP_FILTER_NONE |
6834 1 << HWTSTAMP_FILTER_ALL,
6835 .rx_hash_key_size = 40,
6836 };
Linux kernel stable tree